Journal articles: 'Automatic Tool Changer'

1

Li, Wei, Decheng Wang, and Peng Cheng. "Design and Research of Automatic Tool Changer System for Multistation Spring Forming Machine." Journal of Robotics 2020 (December 1, 2020): 1–9. http://dx.doi.org/10.1155/2020/4635056.

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Currently, the spring machine tool is fixed by means of manual clamping and positioning by bolts. The automation of the tool change is low, and the accurate value of the tool position cannot be determined. The automatic tool change system for spring machine was designed by using the standard functional parts of the automatic tool change system of the machining center. It mainly includes the design of the automatic loose clamp device and that of the multispindle automatic tool change arm. After static analysis, the deformation of the automatic tool change arm is 0.153 mm, which satisfies the requirements for usage. Kinematic analysis of the designed automatic tool change arm was carried out. After actual verification, the designed automatic tool change system of spring machine realizes the functions of the tools automatic replacement and positioning of the spring machine, which improves the automation of the spring forming equipment.

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Lu, Xiao Hong, Peng Zhuo Han, Wen Yi Wu, and Wei Jie. "Reliability Evaluation of Circular Tool Magazine and Automatic Tool Changer." Advanced Materials Research 630 (December 2012): 245–48. http://dx.doi.org/10.4028/www.scientific.net/amr.630.245.

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Tool magazine and automatic tool changer is important parts to fulfill the machining center tool reserve and automatic changing of the spindle tool. The reliability of them directly affects the performance of the host. But recently there are no researches on the reliability evaluation methods, so considering this situation, the reliability evaluation researches on CNC machine tools and their main parts at home and abroad are analyzed and concluded. Combining the collected failure data of the circular tool magazine and automatic tool changer, use MTBF (Mean Time between Failures), MTTR (Mean Time To Repair) and the inherent availability index to realize the reliability evaluation of the circular tool magazine and automatic tool changer. Thus put forward a method to study the reliability evaluation of circular tool magazine and automatic tool changer.

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Obreja, Claudiu, Gheorghe Stan, Dragoș Andrioaia, and Marian Funaru. "Design of an Automatic Tool Changer System for Milling Machining Centers." Applied Mechanics and Materials 371 (August 2013): 69–73. http://dx.doi.org/10.4028/www.scientific.net/amm.371.69.

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In the field of manufacturing processes it is observed that the trend is to produce more and more fast, efficiently parts with high complexity, which involves using a high number of tools in the machining process. One of the main solutions for high speed and efficient manufacturing is based on the full automation of the entire manufacturing process. The automatic changing of the tools involved in the manufacturing process is carried out by the automatic tool changing mechanism, thus the auxiliary non-productive time consumed with the tool change is highly minimized. In this paper we present a novel automatic tool changer which is both simple and compact, and any milling machining center provided with chain or disc tool magazine can be equipped with. Also by adopting the use of this tool changing mechanism other subassemblies of the tool changing system, such as the tool transfer mechanism and the waiting position, are substituted by this changing mechanism. The auxiliary movements needed to bring the tool from the magazine into the waiting position are overlapped with the machining time, so that the total time for exchanging the tool in the spindle with the tool from the magazine is minimized.

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Lee, Sungcheul, Seung-Kook Ro, and Jong-Kweon Park. "Development of Automatic Tool Changer of SMA Tool Holder." Journal of the Korean Society of Manufacturing Technology Engineers 25, no. 1 (February 15, 2016): 1–6. http://dx.doi.org/10.7735/ksmte.2016.25.1.1.

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Dong, Hai Yang, Yan Heng Zhang, Yan Sheng Li, Han Xu Sun, and Yun Zou. "The Performance Analysis of Vertical Automatic Tool Changer System." Applied Mechanics and Materials 226-228 (November 2012): 672–76. http://dx.doi.org/10.4028/www.scientific.net/amm.226-228.672.

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In this paper, we take the vertical tool changer device as an example to study the reliability of the manipulator in the heavy tool case. Firstly, introduce the structure of the vertical tool changer device, and do a simple instruction for the functions of the main components; Secondly, analyze the mechanical properties of the manipulator theoretically, find out the maximum force in the tool changer processing and build a virtual platform of the automatic tool changer to simulate the processing and test the performance of the tool changer; Finally, analyze the performance of the manipulator by finite element method in the heavy tool case. The analysis result shows that the maximum stress is less than the allowable stress: when the manipulator grasps heavy tool, so it is safe in the tool changer processing.

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Obreja, Claudiu, Gheorghe Stan, Lucian Adrian Mihaila, and Marius Pascu. "Application of Tree Graph Method for Reducing the Total Time of Tool Changing in Milling and Boring Machine Tools." Applied Mechanics and Materials 371 (August 2013): 431–35. http://dx.doi.org/10.4028/www.scientific.net/amm.371.431.

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With a view of increasing the productivity on CNC machine tools one of the main solution is to reduce, as much as possible, the auxiliary time consumed with the set-up and replacement of the tools and work pieces engaged in the machining process. Reducing the total time of the tool changing process by the automatic tool changer system can be also achieved through minimizing the number of movements needed for the actual exchange of the tool, from the tool magazine to the machine spindle (the optimization of the tool changing sequences). This paper presents a new design method based on the tree-graph theory. We consider an existing automatic tool changing system, mounted on the milling and boring machining centre, and by applying the new method we obtain all the possible configurations to minimize the tool changing sequence of the automatic tool changer system. By making use of the method proposed we obtain the tool changing sequences with minimum necessary movements needed to exchange the tool. Reconfiguring an existing machine tool provided with an automatic tool changer system by making use of the proposed method leads to obtaining the smallest changing time and thus high productivity.

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Li, Yan Sheng, Yan Heng Zhang, Han Xu Sun, Hai Yang Dong, and Shun Li Zhao. "An Improved Design of the Manipulator on Automatic Tool Changer." Advanced Materials Research 591-593 (November 2012): 259–62. http://dx.doi.org/10.4028/www.scientific.net/amr.591-593.259.

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The tool falling and vibration faults often occur in the process of tool changing, In order to improve the stability of the tools on automatic tool changer, a new structure of the manipulator is presented. The new manipulator contains two-point locking instead of the original one-point locking, and the tools can be clamped more tightly. When the old manipulator is slotting the tool, the forces are analyzed, and the working load and parameters is determined by calculating and analyzing the output curve of manipulator. The three-dimensional model is built in ADMS, and the validity of the new designed manipulator is verified by the simulation in a limit state. The simulation result shows that the new manipulator can increase the ability of tool clamping effectively.

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Liu, Guanglei, Tomohisa Tanaka, and Yoshio Saito. "A Study on Miniature Automatic Tool Changer for Desktop Machine Tool." Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2007.4 (2007): 9C333. http://dx.doi.org/10.1299/jsmelem.2007.4.9c333.

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Yan, Yi Long, Yan Chao Yin, Zhuang Xiong, and Lei Wu. "The Simulation and Optimization of Chain Tool Magazine Automatic Tool Change Process." Advanced Materials Research 834-836 (October 2013): 1758–61. http://dx.doi.org/10.4028/www.scientific.net/amr.834-836.1758.

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In order to ensure processing quality and validate the accurary of macro program. VERICUT software was often used to achieve five-axis gantry milling machine automatic tool changer (ATC) of the whole process simulation.The results show that the validity of macro program is verified by NC simulation and the efficiency of NC simulation is improved. It provides a guide for the modeling and simulation of multi-axis CNC machine tools.

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Zhang, Yue Ming, Bo Jin Yang, Zhe Wang, Hong Ming Mu, and Yu Yang. "The Research of the Tool Magazine Control System Based on PLC." Advanced Materials Research 912-914 (April 2014): 1017–21. http://dx.doi.org/10.4028/www.scientific.net/amr.912-914.1017.

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The tool magazine and automatic tool changer are important functional components, which actual performance affects the efficiency of machining center directly. BT50-32L produced by ZhongHuan (Group) is the research object in this paper, it introduces the application of the control system from aspects of the design of overall program, the control of tool magazine and automatic tool changer. The core of the tool magazine control system is PLC, which can select the nearest tool and achieve the control of tool position, the flip of tool holder and the tool changer of manipulator during the operation. The communication of PC HMI and PLC achieve the simulation and control of the operational status. This system is certified to meet the application requirements with the stable performance, simple structure, easy operation and the rapid and accurate action.

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11

Chen, Shang-Liang, Yin-Ting Cheng, and Chin-Fa Su. "Analysis on machine tool systems using spindle vibration monitoring for automatic tool changer." Advances in Mechanical Engineering 7, no. 12 (December 2015): 168781401562033. http://dx.doi.org/10.1177/1687814015620331.

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12

Mihăilă, Lucian, and Gheorghe Stan. "Braking Solution for a Hydraulically Driven Linear Pallet Changer Mechanism." Applied Mechanics and Materials 657 (October 2014): 485–89. http://dx.doi.org/10.4028/www.scientific.net/amm.657.485.

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The use of machining centres is predominant in the case of small and medium size batch manufacturing, their advantages being materialised in high productivity. The productivity is owed, mainly, to the small auxiliary times consumed with the tool and material change, times which are served by the automatic tool changer system and the automatic pallet changer. The purpose of this article researches aims to determine the kinematic parameters of an hydraulically driven linear pallet changer in two cases (when the deceleration is carried out through a throttle and when the deceleration is made through a new solution). Thus, an experimental set-up, which matches an hydraulically driven linear pallet changer, was designed and built. The experiments aimed toward using a classic braking method of hydraulic cylinders and a new two-stage braking with counter-pressure limitation.

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Zhang, Shu Wei, Jian Qun Liu, Zhen Fei Lv, and Yang Xu. "Research and Development of the Stone Contour Automatic Processing." Key Engineering Materials 522 (August 2012): 127–31. http://dx.doi.org/10.4028/www.scientific.net/kem.522.127.

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Accurate and automatic processing of the stone contour such as the straight line, circle and arc shape is achieved by CNC bridge cutting machine based on the GTS motion control card. Difficult problems of sawing curve contour have been solved with the method of the tool tangential following, in addition, high efficiency and high precision in milling procedure are ensured as a result of the velocity look-ahead. The operation of the automatic tool changer among saw tool, milling tool and grind tool in the machining process is achieved by the method of translating tool carrier. Selective processing of the stone contour is achieved by point selection or region selection, therefore, more flexible processing is realized. The highly automated and integrated processing of the stone contour is realized.

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14

Mihaila, Lucian Adrian, Gheorghe Stan, Marian Funaru, and Dragoș Andrioaia. "Transmission Ratio Optimization of Electric Driven Palletizing Mechanism." Applied Mechanics and Materials 371 (August 2013): 421–25. http://dx.doi.org/10.4028/www.scientific.net/amm.371.421.

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One of the main objectives in obtaining high productivity on machining centers is the reduction of auxiliary times consumed with the tool and workpiece change. In the case of workpiece change the auxiliary time is reduced by adopting the use of an automatic pallet changer system and implicitly of pallets, while in the case of tool change this time is reduced using an automatic tool changer system. The optimization of the constructive and functional parameters of palletizing systems, in the purpose of decreasing auxiliary times, implies increased speed and accelerations, inertia reduction, an optimum transmission ratio, component mechanisms coupled movements, increasing the positioning accuracy of the pallet on the machine table. This paper presents the methodology of transmission ratio optimization of an electric driven pallet changer mechanism, the main purpose is to obtain the maximum acceleration. In order to find the maximum acceleration of the electric driven pallet changing mechanism considered, and thus minimizing the total changing time, we use the equilibrium equation of the moments reduced to the motor shaft. Following the proposed methodology we obtain the maximum acceleration of the considered pallet changer mechanism. Also we issue some constructive indications for future designing of electric driven pallet changer mechanisms.

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15

Xiong, Zhuang, Yan Chao Yin, and Yi Long Yan. "The Macro Program Design and Digital Simulation of the Automatic Tool Changer for 5-Axis Machine." Advanced Materials Research 655-657 (January 2013): 1282–85. http://dx.doi.org/10.4028/www.scientific.net/amr.655-657.1282.

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In order to reduce non-cutting time and improve machining efficiency, the macro program of automatic tool changer (ATC) has been designed firstly, which was based on the macro theory and parameter settings. Then, the machining simulation environment of the automatic tool changing was established, based on which, the digital simulation of automatic tool changing process is realized by mapping of the practical changing tool process in the virtual machining environment. The simulation results effectively verify and improve the macro program performance.

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16

Tian, Hailong, Zhaojun Yang, Guofa Li, and Chuanhai Chen. "Study on failure warning of tool magazine and automatic tool changer based on tool-pulling force." Journal of Mechanical Science and Technology 33, no. 9 (September 2019): 4371–81. http://dx.doi.org/10.1007/s12206-019-0833-9.

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17

Mihaila, Lucian Adrian. "Material Handling Mechanisms Used in Flexible Manufacturing Systems." Applied Mechanics and Materials 245 (December 2012): 197–202. http://dx.doi.org/10.4028/www.scientific.net/amm.245.197.

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In small and medium batch series manufacturing the small tool and workpiece changing time is one of the main objectives to follow in obtaining high productivity. These auxiliary times are defined as the times consumed with preparing and changing the next tool or workpiece to follow the machining process, times that usually overlap the machining process. For this purpose machining centres are equipped with an automatic tool changer system and an automatic pallet changer system. The palletizing systems imply eliminating the times consumed with the alignment, fixing and clamping of the workpieces, these systems consisting of several mechanisms: the pallet, the automatic pallet changing mechanism, the positioning mechanism and the pallet clamp/unclamp mechanism. In this paper we present an general overview of the automatic pallet changing mechanisms used both in flexible manufacturing systems and machining centres.

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18

Choi, Hyun-Jin, and Han-Gyu Lee. "A study on the Design of Drum Type Automatic Tool Changer." Korean Society of Manufacturing Process Engineers 19, no. 7 (July 30, 2020): 52–59. http://dx.doi.org/10.14775/ksmpe.2020.19.07.052.

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19

Kim, Jae-Hyun, and Choon-Man Lee. "Multi-stage optimum design of magazine type automatic tool changer arm." Journal of Central South University 19, no. 1 (January 2012): 174–78. http://dx.doi.org/10.1007/s11771-012-0988-3.

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20

Lu, Xiao Hong, Peng Zhuo Han, and Wen Yi Wu. "Reliability Evaluation of Chain-Type Tool Magazine and ATC." Applied Mechanics and Materials 271-272 (December 2012): 461–65. http://dx.doi.org/10.4028/www.scientific.net/amm.271-272.461.

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As the tool magazine and automatic tool changer (ATC) are the important function units to reserve and change tools for the machining center, the tool-changing rate affects their reliability life which directly influences the performance level of the machining center. However, the reliability of the tool magazine and ATC has not yet got a reasonable evaluation index. Directing at the features of the tool magazine and ATC system, the mean tool change numbers between failures evaluation index is proposed, which is used to calculate the mean time to repair and estimate the collected failure data of the chain-type tool magazine and ATC. It can be seen that the tool magazine with continuous tool-changing adopts the mean tool change numbers between failures as the reliability evaluation index.

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21

Chen, Shang-Liang, Chin-Fa Su, and Yin-Ting Cheng. "A novel framework for diagnosing automatic tool changer and tool life based on cloud computing." Advances in Mechanical Engineering 8, no. 3 (March 4, 2016): 168781401663731. http://dx.doi.org/10.1177/1687814016637319.

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22

Chen, F. C., and H. S. Yan. "A Methodology for the Configuration Synthesis of Machining Centers with Automatic Tool Changer." Journal of Mechanical Design 121, no. 3 (September 1, 1999): 359–67. http://dx.doi.org/10.1115/1.2829468.

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The purpose of this paper is to present a design methodology for the configuration synthesis of machining centers with automatic tool changer to meet the required topology and motion characteristics. According to the concept of coordinate system, graph theory, generalization, specialization, and motion synthesis, this design methodology is proposed and computerized, and the machining centers with automatic tool changer up to eight links are synthesized. As the result, for the machining centers with drum type tool magazine, the numbers of configurations of machining centers with 6, 7, and 8 links are 2, 13, and 20, respectively. Similarly, for the machining centers with linear type tool magazine, the numbers of configurations of machining centers with 5, 6, 7, and 8 links are 1, 5, 20, and 60, respectively. Furthermore, this work provides a systematic approach for synthesizing spatial open-type mechanisms with topology and motion requirements.

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23

Lee, Sangho, Jong-Won Kim, TaeWon Seo, and Jongwon Kim. "Four-bar linkage-based automatic tool changer: Dynamic modeling and torque optimization." Journal of Mechanical Science and Technology 31, no. 5 (May 2017): 2407–13. http://dx.doi.org/10.1007/s12206-017-0438-0.

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24

Sheng, Zhong Qi, Hua Long Xie, Zhi Wei Xu, and Peng Li. "Design System Development of Tool Magazine for CNC Machine Tools." Applied Mechanics and Materials 16-19 (October 2009): 155–59. http://dx.doi.org/10.4028/www.scientific.net/amm.16-19.155.

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As an important part of CNC machine tools and machining center, automatic tool changer is the basis to realize continuous processing of multiple machining operations. The design system development of tool magazine is an engineering of complex system. Based on the secondary development technology of UG, this paper developed the design and management system of tool magazine and realized the standardization and the process of design procedure. After introducing the basic idea of design system development, this paper presented function modules and design workflow of tool magazine respectively. The management system for tool magazine was given next. UG-based development of tool magazine for CNC machine tools can meet the design need and improve the design quality effectively.

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Kim, Dong Hyeon, Hyun Su Chee, and Choon Man Lee. "The Technical Trend and Future Development Direction of Machine Tools Automatic Tool Changer by Patent Mapping." Journal of the Korean Society of Precision Engineering 30, no. 3 (March 1, 2013): 266–70. http://dx.doi.org/10.7736/kspe.2013.30.3.266.

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Wu, Lei, Yan Chao Yin, Zhuang Xiong, and Yi Long Yan. "The Digital Design and Simulation of Chain Tool Changer for Large Gantry Machine." Advanced Materials Research 889-890 (February 2014): 1018–21. http://dx.doi.org/10.4028/www.scientific.net/amr.889-890.1018.

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The technology development of the large gantry machine has been more and more popular, which is on the basis of the development of modern processing method and generalization of complex products. In order to reduce non-cutting time and improve machining efficiency, a large capacity of chain tool library was introduced in this paper, the structure of the whole chain tool library and tool changer were designed firstly, and then the simulation of automatic tool changer was conducted in the UG to verify the correctness of the movement. Finally, the design parameters were optimized according to the simulation results. And we can obtain the most appropriate motion rule by adjusting design parameters in the process of digital machining simulation.

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27

Ryuh, Beom-Sahng, Sang Min Park, and Gordon R. Pennock. "An automatic tool changer and integrated software for a robotic die polishing station." Mechanism and Machine Theory 41, no. 4 (April 2006): 415–32. http://dx.doi.org/10.1016/j.mechmachtheory.2005.06.004.

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Chen, Xuefeng, Gaigai Cai, Hongrui Cao, and Wei Xin. "Condition assessment for automatic tool changer based on sparsity-enabled signal decomposition method." Mechatronics 31 (October 2015): 50–59. http://dx.doi.org/10.1016/j.mechatronics.2014.12.006.

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Ambrosio, H., and M. Karamanoglu. "Design and Development of an Automatic Tool Changer for an Articulated Robot Arm." IOP Conference Series: Materials Science and Engineering 65 (July 22, 2014): 012023. http://dx.doi.org/10.1088/1757-899x/65/1/012023.

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Jeong, Y. H., H. Tae, B. K. Min, and D. W. Cho. "Virtual automatic tool changer of a machining centre with a real-time simulation." International Journal of Computer Integrated Manufacturing 21, no. 8 (December 2008): 885–94. http://dx.doi.org/10.1080/09511920701819171.

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31

Rao, Ming Ze. "The Control Design of the Chain Magazine Test Bench." Applied Mechanics and Materials 721 (December 2014): 330–33. http://dx.doi.org/10.4028/www.scientific.net/amm.721.330.

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The stable operation of the chain magazine which is important functional parts of the machining centers affects the processing efficiency directly, requiring test bench and related experiments in progress for the chain magazine performance parameters. We design the hardware and software and complete PLC chain magazine test bench based on the control and experimental testing requirements in the analysis of specific institutions and chain magazine movement principle. PLC is the core of the test bench which can achieve the operation of the magazine and the control automatic tool changer. The PLC program according to the experimental requirements can control tool magazine and automatic tool changer different motion process for related test. PC can achieve magazine movement simulation, monitoring the process of the tool changing, as well as recording and analysis of test data. The Anti-interference cabinet of the test bench ensure the stable operation of control system. The tests proved that PLC-based test bench able to meets the test requirements and complete the default action for a series of related tests with simple control, stable operation and scalability.

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Sang, Yong, Ying Han, Yuebang Dai, and Fengtao Li. "The Development of an Interactive Automatic Tool Changer System Based on Virtual Reality Technology." International Journal of Multimedia and Ubiquitous Engineering 9, no. 9 (September 30, 2016): 329–42. http://dx.doi.org/10.14257/ijmue.2016.11.9.33.

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Giublin, B., J. A. Vieira, T. G. Vieira, L. G. Trabasso, and C. A. Martins. "Experimental analysis of the automated process of sanding aircraft surfaces." Aeronautical Journal 118, no. 1199 (January 2014): 53–64. http://dx.doi.org/10.1017/s0001924000008927.

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Abstract ITA and EMBRAER are currently executing the research project Automation of Aircraft Structural Assembly (AASA) whose goal is to implement a robotic cell for automating the riveting process of aeronautical structures. The proposal described herein complements the AASA project, adds other manufacturing processes, namely sanding and polishing of aircraft surfaces. To implement the additional processes AASA project resources and facilities were used (robots and metrology systems) and devices designed and /or acquired to allow sharing of these resources. Among these, an Automatic Tooling Support for AERonautics structures (ATS_AER) was designed and built; also, a robot tool changer with high load capacity was acquired. The outcome of this research project is the evaluation of the feasibility of automating the processes of sanding and polishing metal surfaces in the aircraft manufacture using robots. The operating method adopted for surface treatment employed the ‘U’ type trajectory optimised to be run by a KUKA robot KR 500. The sanding process has been applied to aluminum metal sheet specimen sized 2•18ft2 (0•20m2) and used commercial 600 and 800 sandpaper. The automated sanding process yielded an average value of RA 0•48 ± 0•08 which is 25% more efficient when compared to the traditional, manual process whose average value of RA is 0•75 ± 0•51.

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Hu, Ye, Zhao Jun Yang, Xiao Ming Zeng, Peng Fei Song, Yu Peng Ma, Yang Wang, and Qiao Lou. "Fault Detection System and Reliability Analysis for Chain-Type Tool Magazine." Advanced Materials Research 542-543 (June 2012): 941–44. http://dx.doi.org/10.4028/www.scientific.net/amr.542-543.941.

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By analyzing the structure features and tool changing process of a large-scale national Automatic Tool Changer (ATC) with a chain-type tool magazine, a chain-type tool magazine reliability test bench is designed with a new fault detection system, where a new failure data collecting method is applied for taking failure data statistics and reliability analysis. This set of fault detecting and reliability analyzing system not only provides a way for ATC to predict system faults, but also creates good conditions for further ATC reliability research.

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Gökler, Mustafa Ilhan, and Murat Bilgin Koç. "Design of an automatic tool changer with disc magazine for a CNC horizontal machining center." International Journal of Machine Tools and Manufacture 37, no. 3 (March 1997): 277–86. http://dx.doi.org/10.1016/s0890-6955(96)00066-1.

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Gong, Qing Shan, Min Luo, Ai Hua Ren, and Zhi Bin Chang. "Research on Dynamic Characteristics of Globoidal Cam Employed in Automatic Tool Changer (ATC) of Machine Center." Applied Mechanics and Materials 456 (October 2013): 133–36. http://dx.doi.org/10.4028/www.scientific.net/amm.456.133.

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Globoidal Cam Indexing Mechanisms are used extensively as automatic tool changers (ATC) of machining centres or as indexing mechanisms in various machinery.By applying the theory of conjugate surface , the model for the surface design of the Globoidal Cam Indexing Mechanism of ATC is developed with MathCAD and Pro/E. The dynamic simulation of the me

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Ma, Qiu Cheng, Teng Fang, Zhi Xiang Fang, and An Ge Lu. "Dynamics Simulation Analysis of Exchange Cutter Manipulator Based on RecurDyn." Applied Mechanics and Materials 364 (August 2013): 396–400. http://dx.doi.org/10.4028/www.scientific.net/amm.364.396.

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This paper introduces a new kind of cam curve used in automatic tool changer based on the Exchange Cutter Manipulator 3d model established by the new cam curve and the use of RecurDyn to do the dynamics simulation. Comparing the establishment of the modify sine curve with the Exchange Cutter Manipulator, the new type curve of the Exchange Cutter Manipulator have smaller impact.

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Choi, Sung Min, Xiao Jian, In Baek Park, and Seok Hee Lee. "Development of Hybrid-FDM Process Using Automatic Tool Changer for Multi-Material Production and Post-Processing." Journal of the Korean Society for Precision Engineering 33, no. 3 (March 1, 2016): 235–42. http://dx.doi.org/10.7736/kspe.2016.33.3.235.

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Jia, Zhi Cheng, and Zhao Jun Yang. "A Note on the Early Failure Period for CNC Machining Tools." Advanced Materials Research 605-607 (December 2012): 734–38. http://dx.doi.org/10.4028/www.scientific.net/amr.605-607.734.

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Through the plentiful authentic early failure data collected by field tracing test of 30 CNC machining tools with ATC (Automatic Tool Changer), we searched for the rules and distribution of early failure of the CNC machining tools. Main fault mode and facts which usually make a great possible impact on the reliability of these products are identified based on an analysis of these early failure data. The distribution model of early failure is found by analyzing and processing these data with the method of regression analysis and hypothesis testing as well as Bayesian forecasting of early fault phenomena. Suggestions how to enhance reliability level of these products are proposed.

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Chen, Xian Shuai, Dai Lin Zhang, Song Mei Yuan, Xiao Zhang, Jian Yu Chen, and Ru Xu Du. "A Precision CNC Turn-Mill Machining Center with Gear Hobbing Capability." Applied Mechanics and Materials 300-301 (February 2013): 1241–49. http://dx.doi.org/10.4028/www.scientific.net/amm.300-301.1241.

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With ever increased demand for reduced sizes and increased complexity and accuracy, traditional machine tools have become ineffective for machining miniature components. Typical examples include dental implants, the parts used in mechanical watch movement, and the parts used in medical endoscope. With complex geometry and tight tolerance, few machine tools are capable of making them. This paper introduces our PC-based CNC Turn-Mill Machining Center. It has 5 axes, an automatic bar feeder, an automatic part collection tray, and a tool changer. In particularly, it has a special synchronization control algorithm that gives not only higher accuracy but also ease of use. In addition, to improve the accuracy, the software based volumetric error compensation system is implemented. Based on the experiment testing, the machining error is ± 3 µm in turning, ± 7 µm in milling and the maximum profile error is less than ± 7.5 µm in gear hobbing.

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Nakaminami, Masamitsu, Tsutomu Tokuma, Kazuhiko Matsumoto, Sachinori Sakashita, Toshimichi Moriwaki, and Keiichi Nakamoto. "Optimal Structure Design Methodology for Compound Multiaxis Machine Tools - II - Investigation of Basic Structure -." International Journal of Automation Technology 1, no. 2 (November 5, 2007): 87–93. http://dx.doi.org/10.20965/ijat.2007.p0087.

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Compound multiaxis machine tools are used to machine high-value-added parts through integrating milling and turning. Compound machine tools are generally structured based on a conventional NC lathe by incorporating Y axis and automatic tool changer (ATC) components for milling. Due to complexity of the structure and functional versatility required for a compound machine tool, accuracy, productivity, and return on investment (ROI) must be improved over conventional NC lathes and machining centers. In the sections that follow, we discuss design methodology for compound multiaxis machine tools, focusing on the design of an optimal basic structure for high accuracy and high productivity. We propose a box in box structure, a movable column-Y axis, and a boring machine structure. We analyzed static rigidity, dynamic features, and movement accuracy of machine structures theoretically using FEM for three proposed structures. We found that the box in box structure is suitable for compound multiaxis machine tools to achieve high accuracy and high productivity.

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Jia, Zhi Cheng, Zhao Jun Yang, and Gui Xiang Shen. "Early Failure Mode Effect and Criticality Analysis for CNC Machining Tools." Applied Mechanics and Materials 303-306 (February 2013): 1653–56. http://dx.doi.org/10.4028/www.scientific.net/amm.303-306.1653.

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According to the plentiful early failure data collected on the spots of 30 CNC machining tools with ATC (Automatic Tool Changer), FMECA method is used to analyze the main fault mode and facts which usually make a great possible impact on the reliability of these products during early failure period.We find out the fault positions and the ratios of the fault modes and fault causes. We further analyze the fault modes and fault causes which frequently arise in the subsystems and parts. Through the analyses of FMECA, we learn the weak links of CNC machining tools and provide bases for removing the products faults. Suggestions how to enhance reliability level of these products are proposed.

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Verma, Kuldeep, R. M. Belokar, Vinod Kumar Verma, and Klimis Ntalianis. "Track-based analysis for profile generation on globoidal cam in automatic tool changer of CNC machining center." Assembly Automation 39, no. 2 (April 1, 2019): 369–79. http://dx.doi.org/10.1108/aa-08-2018-111.

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PurposeThis paper aims to propose an elementary approach towards the measurement of a globoidal cam profile used in an automatic tool changer (ATC) of computer numerical control (CNC) machines.Design/methodology/approachA simple and unique online method has been designed for the profile metrology of the cam. This simple methodology will replace the traditional methodology of profile metrology of cam by coordinate measuring machine (CMM). A globoidal cam with an indexable turret and roller follower (rotating in an enclosed track) has been evaluated in our analysis. This analysis plays a significant role in the performance determination of the cam as well as the ATC of CNC machines.FindingsA novel model has been designed and implemented to investigate the profile of a globoidal cam. The proposed methodology becomes an enhancement over the old methodology, i.e. measurement through CMM. Theoretical analysis and practical implementation prove the significance of the method.Originality/valueAn enhanced methodology to effectively measure the globoidal cam profile has been proposed. The practical implication of the proposed methodology remains for the CNC machine tool and ATC manufacturers. Finally, analytical explorations have been carried out to prove the validity of the proposal.

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Papp, Gergely, Franck Felisaz, Clement Sorez, Marcos Lopez-Marrero, Robert Janocha, Babu Manjasetty, Alexandre Gobbo, Hassan Belrhali, Matthew W. Bowler, and Florent Cipriani. "FlexED8: the first member of a fast and flexible sample-changer family for macromolecular crystallography." Acta Crystallographica Section D Structural Biology 73, no. 10 (September 29, 2017): 841–51. http://dx.doi.org/10.1107/s2059798317013596.

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Automated sample changers are now standard equipment for modern macromolecular crystallography synchrotron beamlines. Nevertheless, most are only compatible with a single type of sample holder and puck. Recent work aimed at reducing sample-handling efforts and crystal-alignment times at beamlines has resulted in a new generation of compact and precise sample holders for cryocrystallography: miniSPINE and NewPin [see the companion paper by Pappet al.(2017,Acta Cryst., D73, 829–840)]. With full data collection now possible within seconds at most advanced beamlines, and future fourth-generation synchrotron sources promising to extract data in a few tens of milliseconds, the time taken to mount and centre a sample is rate-limiting. In this context, a versatile and fast sample changer, FlexED8, has been developed that is compatible with the highly successful SPINE sample holder and with the miniSPINE and NewPin sample holders. Based on a six-axis industrial robot, FlexED8 is equipped with a tool changer and includes a novel open sample-storage dewar with a built-in ice-filtering system. With seven versatile puck slots, it can hold up to 112 SPINE sample holders in uni-pucks, or 252 miniSPINE or NewPin sample holders, with 36 samples per puck. Additionally, a double gripper, compatible with the SPINE sample holders and uni-pucks, allows a reduction in the sample-exchange time from 40 s, the typical time with a standard single gripper, to less than 5 s. Computer vision-based sample-transfer monitoring, sophisticated error handling and automatic error-recovery procedures ensure high reliability. The FlexED8 sample changer has been successfully tested under real conditions on a beamline.

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Ran, Yan, Teng Zhang, Zongyi Mu, Genbao Zhang, Hongwei Wang, and Wei Zhang. "Quality characteristic decoupling planning of different meta-action units for computer numerical control machine tool." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 234, no. 14 (November 4, 2019): 2760–70. http://dx.doi.org/10.1177/0954406219884972.

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Since computer numerical control machine tool is composed of multiple meta-action units to achieve one specific function, including the meta-action units' own quality, it still needs to control the coupling relationships among different meta-action units' quality characteristics to guarantee the whole machine's quality. In this article, a method of quality characteristic decoupling planning based on meta-action unit for computer numerical control machine tool was proposed. Firstly, the coupling constraint models based on meta-action unit were established. Secondly, the comprehensive coupling strengths of meta-action units were calculated and introduced into the design structure matrices. Thirdly, multidisciplinary design optimization method was adopted to obtain the optimized control sequence of different meta-action units' quality characteristics. What is more, automatic pallet changer rotary motion of computer numerical control machine tool was taken as an example to illustrate the rightness and effectiveness of this method.

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Wang, Yi Qiang, Xiao Jun Wang, and Shun Ming Hua. "Reliability Analysis and Improvement of ATCs of CNC Lathes." Applied Mechanics and Materials 37-38 (November 2010): 939–43. http://dx.doi.org/10.4028/www.scientific.net/amm.37-38.939.

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An automatic tool changer (ATC) is one of the most important subsystems of a computerized numerical control (CNC) lathe. The field failure analysis is very important to improve the reliability of the ATC. The structure and mechanism of an ATC is briefly introduced. Its brief reliability block diagram is set up. With this understanding, through the collection of the field failure data, a coding system to code failure data is devised and a failure analysis database of CNC lathes is accrued. The failure mode and cause are analyzed to indicate the weak subsystem of the ATC. Some suggestions on improving the reliability have been proposed.

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Chen, Yifan, Genbao Zhang, and Yan Ran. "Risk Analysis of Coupling Fault Propagation Based on Meta-Action for Computerized Numerical Control (CNC) Machine Tool." Complexity 2019 (July 25, 2019): 1–11. http://dx.doi.org/10.1155/2019/3237254.

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A comprehensive fault analysis of CNC machine tool is conducive to improving its reliability. Due to the highly complex structure of CNC machine tool, there are different degrees of coupling relationship between faults. However, the traditional fault analysis methods (FMEA, FTA, etc.) for CNC machine tool do not solve this problem perfectly. Therefore, we propose a coupling fault propagation model based on meta-action. First, in order to simplify the structural complexity of CNC machine tool, the “Function-Motion-Action (FMA)” decomposition structure is used to decompose the product function into simple meta-action, and the numerical matrix is used to quantify the coupling relationship between the meta-actions. Then, based on the fault transfer characteristics of meta-action, the fault propagation model is established, and the global risk effect (GRE) is combined to realize the comprehensive evaluation of the risk criticality of meta-actions. Finally, the rationality and validity of the method are verified by the case analysis of the automatic pallet changer (APC) of computerized numerical control (CNC) machining center.

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Van, Hung Pham, and Duong Nguyen Thuy. "Influence of relative humidity and air temperature on the stopping position of the automatic tool changer in a CNC machine when using a pneumatic cylinder." International Journal of Modern Physics B 35, no. 14n16 (May 5, 2021): 2140013. http://dx.doi.org/10.1142/s0217979221400130.

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The automatic tool changer (ATC) in computerized numerical control (CNC) milling machine often uses pneumatic dynamic sources. Friction in the pneumatic cylinder affects the ATC’s stopping position; this friction depends on many factors, including the air environment’s relative humidity and temperature. This paper presents the results of research on the effects of relative humidity (RH) and air temperature (T) on the stopping position of an ATC using a pneumatic cylinder. Studies were conducted at temperatures of [Formula: see text]C, [Formula: see text]C and [Formula: see text]C and relative humidity values of 51%, 75% and 99% for different speeds of the pneumatic cylinder (30, 50 and 100 mm/s). The results show that when the humidity increases from 51% to 99% and the temperature increases from [Formula: see text]C to [Formula: see text]C, the friction force decreases. The friction force is related to the relative humidity and temperature of the air. Thus, the deviation of the ATC’s stopping position depends on the relative humidity and temperature of the area under investigation.

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Lu, Xiaohong, Zhenyuan Jia, Xiaochen Hu, and Wentao Wang. "Double position sensitive detectors (PSDs) based measurement system of trajectory tracking of a moving target." Engineering Computations 34, no. 3 (May 2, 2017): 781–99. http://dx.doi.org/10.1108/ec-08-2015-0214.

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Purpose The purpose of this paper is to achieve the trajectory tracking measurement of a moving target based on double position sensitive detectors (PSDs). Design/methodology/approach In this paper, first, a double PSD-based measurement system including hardware system and software system is built up. Then, the working principle is studied to calculate parameters, and calibration experience is conducted. Finally, this double PSD-based measurement system is used to test angular displacement and axial displacement on the tool magazine and automatic tool changer. Findings In the experiment, the maximum position error of a space point based on double PSD measurement system is 0.8566 mm, and the average error is 0.4716 mm. These results show that the built double PSD-based measurement system of trajectory tracking of a moving target is reasonable. Originality/value Combining the characteristics of the PSD and principles of binocular visual measurement, a non-contact three-dimensional measuring system based on double PSDs is developed. The designed double-based measurement system is quite suitable for measurement of a fast-changing illuminant or in the case that the tracking accuracy is not tight.

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Komara, Asep Indra, Muhammad Fadhlan Afif, and Dedy Ariefijanto. "Perancangan dan Validasi Fixture Pemesinan Komponen Utama Produk Ragum Meja." JTERA (Jurnal Teknologi Rekayasa) 5, no. 1 (July 5, 2020): 11. http://dx.doi.org/10.31544/jtera.v5.i1.2019.11-24.

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Ragum meja adalah salah satu produk Politeknik Manufaktur Bandung yang terdiri atas dua komponen utama yaitu rahang gerak dan rahang tetap. Pemesinan kedua komponen ini sebelumnya dilakukan menggunakan mesin konvensional dengan menggunakan beberapa fixture. Permasalahannya adalah kuantitas dan kualitas produk masih belum memenuhi harapan. Proses pemesinan diputuskan diganti menggunakan mesin Computer Numerical Control (CNC) sehingga memerlukan fixture baru. Penelitian ini bertujuan untuk merancang fixture pemesinan komponen utama produk ragum meja. Perancangan dilakukan menggunakan metode yang dikembangkan oleh Verein Deutscher Ingenieure (VDI) dimana langkah-langkah yang dilakukan adalah identifikasi produk, analisis pemesinan dan perencanaan alat potong, analisis mesin, analisis operator dan layout produk, dan analisis ekonomis. Selanjutnya dilakukan kajian perhitungan dan validasi terhadap rancangan fixture. Berdasarkan hasil studi yang dilakukan, perbaikan proses pemesinan dapat dilakukan dengan usulan skema yang baru. Rancangan fixture baru memungkinkan proses pemesinan empat produk yang terdiri dari masing-masing dua rahang gerak dan dua rahang tetap. Fixture telah mengakomodir penggunaan automatic pallet and tool changer pada mesin sehingga pemasangan produk dan pergantian alat potong dilakukan dengan cepat. Waktu pemesinan untuk kedua komponen diestimasi berubah dari 11,5 jam menjadi 1,4 jam.

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Journal articles on the topic 'Automatic Tool Changer'

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