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Journal articles on the topic 'Machining CAD'

Author: Grafiati
Published: 4 June 2021
Last updated: 15 February 2022

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1

Kao, YC, and GCI Lin. "CAD/CAM collaboration and remote machining." Computer Integrated Manufacturing Systems 9, no. 3 (July 1996): 149–60. http://dx.doi.org/10.1016/s0951-5240(96)00006-7.

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2

Miao, Huikang K., Nandakumar Sridharan, and Jami J. Shah. "CAD-CAM integration using machining features." International Journal of Computer Integrated Manufacturing 15, no. 4 (January 2002): 296–318. http://dx.doi.org/10.1080/09511920110077502.

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3

Zhang, Li Yan. "Machining Feature-Based CAD/CAPP for STEP-NC." Applied Mechanics and Materials 598 (July 2014): 591–94. http://dx.doi.org/10.4028/www.scientific.net/amm.598.591.

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ISO 14649, known as STEP-NC, is new model of data transfer between CAD/CAM systems and CNC machines. In this paper, the modeling based on machining feature is proposed. The machining feature comes from the manufacturing process considering the restriction of machining technology and machining resource. Then the framework for computer aided process planning is presented, where the algorithms of operation planning is studied. The practical example has been provided and results indicate that machining feature based model can integrate with CAPP and STEP-NC seamlessly.
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4

Guo, Ting Ting, Xian Ying Feng, and Teng Jiao Sun. "Crankshaft Mould CNC Machining Based on CAD/CAM Technique." Key Engineering Materials 693 (May 2016): 1704–10. http://dx.doi.org/10.4028/www.scientific.net/kem.693.1704.

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Taking the CY4105 crankshaft mould as the research target, this paper introduced the CNC machining method based on CAD/CAM technique. At first, structure of the mould was introduced. Then, machining method was introduced, including blank setting method, cutting tool selection, machining method selection and technological parameters setting method. After that, generation method of the mould machining programs was introduced, including tool path and G codes generation. At last, the mould was machined by a vertical machining center, and the results show that the machining accuracy is high.
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5

KISHINAMI, Takeshi. "Advanced precision machining - The role of CAD/CAM for precision machining." Journal of the Japan Society for Precision Engineering 55, no. 6 (1989): 963–66. http://dx.doi.org/10.2493/jjspe.55.963.

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6

Bär, Gert. "CAD of worms and their machining tools." Computers & Graphics 14, no. 3-4 (January 1990): 405–11. http://dx.doi.org/10.1016/0097-8493(90)90061-2.

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7

Yan, Bing Bing, G. J. Chen, J. F. Shuai, and D. C. Huang. "Study on CAD/CAM Software System of Machining Spatial Curved Surface by WEDM." Advanced Materials Research 188 (March 2011): 705–10. http://dx.doi.org/10.4028/www.scientific.net/amr.188.705.

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The design, modeling and simulation are one of the key technologies of CAD/CAM software system. The mathematical model of the CAD/CAM system for machining spatial surface was given firstly. After the design idea of the CAD/CAM system was describe in detail, the workflow of the CAD/CAM software system was illustrated, and then data exchange mechanism was determined and detailed steps were given simultaneously. Under MFC framework, the CAD/CAM software system was finished using OpenGL, and the configuration and machining process simulation were carried out. All these works provide an effective approach to raising the productivity and precision of machining spatial curve surface part by WEDM-HS.
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Poniatowska, Malgorzata. "Free-form surface machining error compensation applying 3D CAD machining pattern model." Computer-Aided Design 62 (May 2015): 227–35. http://dx.doi.org/10.1016/j.cad.2014.12.003.

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9

Wei, Baoli, and Meng Lv. "CAD Integration of Mechanical Numerical Control Board Parts Based on Machining Features." Computer-Aided Design and Applications 18, S3 (October 20, 2020): 176–87. http://dx.doi.org/10.14733/cadaps.2021.s3.176-187.

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The development and application of computer-aided design (CAD) technology has led to rapid improvements in product design automation, crafting process automation and numerical control programming automation. Machining feature refers to basic configuration units that constitute part shapes and the collection of non-geometric information with engineering semantics attached to it. The integration of mechanical numerical control parts is the integration of part design features and machining features, and each feature corresponds to a set of processing methods. Based on the summaries and analyses of previous research works, this paper expounded the current status and significance of mechanical numerical control board part integration, elaborated the development background, current status and future challenges of machining features and CAD technology, introduced a data transfer method of CAD integration and machining features-based part integration system, analyzed the design and machining features of CAD integration of board parts, constructed the graphics processing model and information reorganization model for CAD integration of board parts; conducted the feature description and modeling analysis of CAD integration of plate parts; discussed the crafting information similarity of mechanical numerical control plate part integration; explored the feature information and expression of feature library for plate parts integration.
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10

Kassim, Noordiana, Yusri Yusof, Mahmod Abd Hakim Mohamad, Mohd Najib Janon, and Rafizah Mohd Hanifa. "Development of STEP-NC Based Machining System for Machining Process Information Flow." Applied Mechanics and Materials 315 (April 2013): 278–82. http://dx.doi.org/10.4028/www.scientific.net/amm.315.278.

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To realize the STEP-NC based machining system, it is necessary to perform machining feature extraction, generating machine-specific information, and creating a relationship between STEP-NC entities. A process planning system of a STEP-NC information flow that starts with constructing a machining feature from a CAD model will be developed. In this paper, a further in-depth study of the implementation and adaptation of STEP-NC in manufacturing is studied. This study will help to understand how the data from CAD/CAM can be converted into STEP-NC codes and the machining process will be based on the STEP-NC codes generated.
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11

Zhang, Kai Xing, Shu Sheng Zhang, and Xiao Liang Bai. "Partial Matching Algorithm of 3D CAD Models Based on the Constraints of Transition Features." Advanced Materials Research 97-101 (March 2010): 3371–75. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.3371.

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The CAD models of mechanical parts usually have many blends and chamfers, and the existence of these machining features can greatly change the geometric and topological patterns of the CAD models, but the existing partial matching algorithms cannot match the CAD models which contain machining features such as blends and chamfers. In this paper, a new approach to partial matching based on the constraints of transition features is proposed. Firstly, the transition features are identified by feature recognition, and then these machining features are removed to eliminate the impacts to the geometric and topological information of the CAD models, and the attribute adjacent graph is reconstructed, finally, the sub-graph isomorphism approach is used to achieve the partial matching. Experimental results show that this method can achieve partial matching of CAD models which contain machining features such as blends and chamfers, and the matching efficiency can satisfy the requirement of the engineering retrieval.
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12

ISHIGURO, Eiki, Tohru ISHIDA, Masahiko KITA, Keiichi NAKAMOTO, and Yoshimi TAKEUCHI. "A11 Development of CAD/CAM System for Cross Section's Changing Hole Electrical Discharge Machining : Formulation of Post Processor(Digital design and digital manufacturing (CAD/CAM))." Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2009.5 (2009): 251–56. http://dx.doi.org/10.1299/jsmelem.2009.5.251.

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13

Fang, Li Jin, Li Li, and Guo Xun Wang. "Integration of Cutting Robot with CAD/CAM System Based on STEP-NC." Applied Mechanics and Materials 868 (July 2017): 93–98. http://dx.doi.org/10.4028/www.scientific.net/amm.868.93.

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In order to solve the problem of openness, intelligence and low integration in the current machining robot control system, STEP-NC standard is introduced into the field of robot machining, and defines the STEP-NC data model of industrial robots. The 6R industrial robots are used to build the machining platform and the connection between the machining robot and the CAD / CAM system and the integrated data stream structure are discussed. The key issues involved in the post processing of the machining robot are studied. Taking the 6R robot as an example, the robot prototype system is established, and the kinematics solution in the post-processing process is studied and deduced. The cutting and post-processing system platform of cutting robot was established and the sample art machining was completed. The experimental and simulation results show that the system can complete the machining process of the cutting robot and generate executable robot machining instructions.
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14

Van, Quy Hoang, and Tuyen Bui Ngoc. "Effect of Feed Rate, Tool-Path and Step over on Geometric Accuracy of Freeform Surfaces when 3 Axis CNC Milling." Applied Mechanics and Materials 889 (March 2019): 107–14. http://dx.doi.org/10.4028/www.scientific.net/amm.889.107.

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The use of freeform (sculptured) surfaces in the product design process is accelerating at an exponential rate driven by functional as well as esthetics demands. CAD/CAM software is a must in their design are relatively well-covered, issues still remain when it comes to the actual manufacture of freeform surfaces. The major issues are related to the chosen feed rate, toolpaths and step over that would assure the required surface quality, the minimization of the total machining time, etc. This research presents an experimental study to define the effects of machining’s parameters (including: feed rate; toolpath and step over) for CNC 3-axis ball end milling process. The result shows a model for cutting is formulated and incorporated into the parameters of machining that is compatible with all CAD/CAM systems. This result can be used to choose parameters of optimum including federate, toolpath and step over when machining of other freeform surfaces. Keywords: Freeform surface; tool path; ball end milling
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15

Gao, J., D. T. Zheng, and N. Gindy. "Extraction of machining features for CAD/CAM integration." International Journal of Advanced Manufacturing Technology 24, no. 7-8 (April 21, 2004): 573–81. http://dx.doi.org/10.1007/s00170-003-1882-9.

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16

LUTHARDT, R., M. HOLZHUTER, H. RUDOLPH, V. HEROLD, and M. WALTER. "CAD/CAM-machining effects on Y-TZP zirconia." Dental Materials 20, no. 7 (September 2004): 655–62. http://dx.doi.org/10.1016/j.dental.2003.08.007.

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17

Huang, Bo, Changhong Xu, Rui Huang, and Shusheng Zhang. "An automatic 3D CAD model errors detection method of aircraft structural part for NC machining." Journal of Computational Design and Engineering 2, no. 4 (June 23, 2015): 253–60. http://dx.doi.org/10.1016/j.jcde.2015.06.008.

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Abstract Feature-based NC machining, which requires high quality of 3D CAD model, is widely used in machining aircraft structural part. However, there has been little research on how to automatically detect the CAD model errors. As a result, the user has to manually check the errors with great effort before NC programming. This paper proposes an automatic CAD model errors detection approach for aircraft structural part. First, the base faces are identified based on the reference directions corresponding to machining coordinate systems. Then, the CAD models are partitioned into multiple local regions based on the base faces. Finally, the CAD model error types are evaluated based on the heuristic rules. A prototype system based on CATIA has been developed to verify the effectiveness of the proposed approach. Highlights The 3D CAD model of an aircraft structural part is partitioned into multiple local regions in terms of the base faces. The fillet association level graph is proposed to represent the local region for exploring the CAD model errors. An automatic CAD model error detection method based on heuristics rule is proposed.
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18

Jeong, Dae Hoon, and Kyu-Taek Han. "Research on High-Efficiency Machining through Bottom-up Machining using CAD/CAM System." Korean Society of Manufacturing Process Engineers 18, no. 11 (November 30, 2019): 89–95. http://dx.doi.org/10.14775/ksmpe.2019.18.11.089.

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19

Narabu, Yusuke, Jiang Zhu, Tomohisa Tanaka, and Yoshio Saito. "Automatic Manufacturing Feature Extraction of CAD Models for Machining." Key Engineering Materials 447-448 (September 2010): 287–91. http://dx.doi.org/10.4028/www.scientific.net/kem.447-448.287.

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Currently CAD/CAM systems have become more common in automated manufacturing to enhance accuracy and efficiency. However, machining efficiency and accuracy are mainly relied on the experience of the engineer. Therefore, in this research the main aim is to propose the system which automatically analyzes the characteristics of a CAD model and to extract manufacturing features. The method for analyzing shapes of a CAD model represented by triangle mesh is studied. The system can extract planar, spherical, cylindrical, hole, arc, and other curved regions. This research will improve the integration of CAD, CAM system, and is supposed to have a great potential in the application of manufacturing and other engineering fields.
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20

Wan, Jin Gui, and Wei Ding. "Research and Application of CAD/CAM Technology in NC Machining of Part with Complex Surface." Applied Mechanics and Materials 602-605 (August 2014): 111–16. http://dx.doi.org/10.4028/www.scientific.net/amm.602-605.111.

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The development of modern advanced manufacturing technology greatly relies on the CAD / CAM technology. Many pieces of computer software with CAD/CAM function have been developed rapidly in recent years. Unigraphics (UG) is one of the outstanding representatives. It has a powerful design and CNC programming function, and CAD/CAM seamless connectivity. As an application example, a mouse model part which has complex surface was designed and trial-manufactured with CNC machine. First, the 3D model of the part was created in the modeling module of UG software. Then, the process scheme was developed after analyzing. In the manufacturing module of UG software, the NC machining parameters were set according to the processing requirements, the tool paths were generated, edited and checked, and the NC codes were generated by post processing. And then, the NC machining was simulated in YULONG software. Finally, the part was manufactured in a 3-axis CNC milling machine. It has desirable shape and high accuracy. The results show that UG has a perfect CAD/CAM function. The CAD/CAM technology based on UG makes the NC machining of complex surface part very convenient. It improves the efficiency of design and machining, shortens the manufacturing cycle, and reduces the cost, which reflects the importance of the CAD/CAM software in NC machining. The method described in this paper can provide valuable reference for processing similar parts, and it is also useful for related study.
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21

Chou, Jui-Jen, and D. C. H. Yang. "Command Generation for Three-Axis CNC Machining." Journal of Engineering for Industry 113, no. 3 (August 1, 1991): 305–10. http://dx.doi.org/10.1115/1.2899701.

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This paper investigates the command generation for three-axis CNC machining. In the integration of CAD and CAM, it is necessary to relate machine tool dynamics and control in a CAM process to the geometrical data in a CAD model. The data stored in a CAD model is usually static in nature and represented by unitless parameters. Yet, in machine tool motion and control, the data should be transformed into a time dependent domain. In this paper, the geometrical properties of a cutter path, including position, tangent, curvature and torsion are analytically related to the motion dynamics of a machine tool including feedrate, acceleration, jerk and driving force. The information about feedrate, acceleration and driving force is needed for command generation. Jerk analysis can be used for cutting quality analysis.
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22

Nishida, Isamu, and Keiichi Shirase. "Automated Process Planning System for End-Milling Operation by CAD Model in STL Format." International Journal of Automation Technology 15, no. 2 (March 5, 2021): 149–57. http://dx.doi.org/10.20965/ijat.2021.p0149.

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A method for extracting the machining region from a 3D CAD model in Standard Triangulated Language (STL) format and automatically generating a tool path is proposed. First, a method is proposed for extracting the machining region and obtaining the geometrical features such as a convex or concave shape from only the 3D CAD model in STL format. The STL format uses only triangular mesh data and drops all information, which is necessary for extracting the removal volume for the machining and geometrical characteristics. Furthermore, the triangular mesh size is non-uniform. A contour line model is proposed in which the product model is minutely divided on the plane along any one axial direction and is represented by points at intervals below the indicated resolution obtained from the contour line of the cross section of the product. Subsequently, a method is proposed to determine the machining conditions for each extracted machining region and automatically generate a tool path according to the geometrical features of the machining region obtained. A machining experiment was conducted to validate the effectiveness of the proposed method. As a result of the machining experiment, it was confirmed that the tool path automatically generated from the 3D CAD model in STL format can be machined without any problems and with a practical level of accuracy.
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23

Isnaini, Mohammad Mi’radj, Yusaku Shinoki, Ryuta Sato, and Keiichi Shirase. "Development of a CAD-CAM Interaction System to Generate a Flexible Machining Process Plan." International Journal of Automation Technology 9, no. 2 (March 5, 2015): 104–14. http://dx.doi.org/10.20965/ijat.2015.p0104.

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A unique machining knowledge has led to several different perspectives between planners and operators as regards in designing a machining process plan. All precedents have shown the need to maintain a suitable machining process plan. Commercial Computer-Aided Design (CAD) and Computer-Aided Manufacturing (CAM) systems have facilitated the manipulation of 3D models to generate a machining process plan. The open Advanced Programming Interfaces (APIs) are also helpful in tailoring decision support systems to determine process plans. This study proposes an emergent system to generate flexible machining process plans. The proposed system considers the integration between design and manufacturing perspective to produce relevant machining process plan. The generation of process plans begins by considering the total removal volume of the raw material, estimating the removal features, thus analyzing and ordering several candidates of machining process plans. The total machining time and number of setups from each machining process plan candidate is analyzed and evaluated. Eventually, the proposed system is tested using several prismatic 3D models of a workpiece to show the outcomes.
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24

Krimpenis, Agathoklis A., and John G. Tsakanikas. "On Systematic CAD/CAM Modeling of Blow Molds for Plastic Bottles." Solid State Phenomena 261 (August 2017): 448–55. http://dx.doi.org/10.4028/www.scientific.net/ssp.261.448.

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A systematic and detailed approach in design and manufacturing of blow molds for bottles made of PET and PP plastic material with CAD/CAM software tools is presented, as many production errors and product deficiencies stem from inaccurate and imprecise tooling. Apart from high mold accuracy, proper planning also includes the minimization of mold machining costs, which mainly derives from CNC machining time and cutting tool wear. Blow mold design and manufacturing revolves around two major axes: (a) mold material and (b) machining parameter values. The former is critical in terms of production rates and mold life-cycle and the latter has a great impact on mold manufacturing cost, as well as on quality of the produced plastic bottles. Proper choice of machining parameters has a significant impact on thermal conductivity, durability, hardness, stiffness and roughness of the mold. The proposed methodology was implemented on three different test cases (beverage plastic bottles molds) and it was concluded that even the same machining parameter values offer the same mold quality.
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Nishida, Isamu, Shogo Adachi, and Keiichi Shirase. "Automated Process Planning System for End Milling Operation Constrained by Geometric Dimensioning and Tolerancing (GD&T)." International Journal of Automation Technology 13, no. 6 (November 5, 2019): 825–33. http://dx.doi.org/10.20965/ijat.2019.p0825.

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To realize autonomous machining, it is necessary to focus on machining tools and also on the automation of process planning in the preparation stage. This study proposes a process planning system that automatically defines the machining region and determines the machining sequence. Although previous studies have explored computer-aided process planning, only a few have considered geometric tolerances. Geometric tolerances are indicated on product drawings to eliminate their ambiguity and manage machining quality. Geometric dimensioning and tolerancing (GD&T) is a geometric tolerance standard applied to a three-dimensional computer-aided design (3D CAD) model and are expected to be used for the digitization of manufacturing. Therefore, this study developed an automated process planning system by using GD&T as a sequencing constraint. In the proposed system, the machining sequence is automatically determined by the geometrical constraints, which indicate whether the tool can approach, and GD&T, which indicates the geometric tolerance and datum in a 3D CAD model. A case study validated the proposed method of automated process planning constrained by GD&T. The result shows that the proposed system can automatically determine the machining sequence according to the geometric tolerance in a 3D CAD model.
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26

Zhu, Jiang, Tomohisa Tanaka, and Yoshio Saito. "Research on 3D Model Processing Technologies in the Application of Freeform Surface Machining." Advanced Materials Research 1017 (September 2014): 281–86. http://dx.doi.org/10.4028/www.scientific.net/amr.1017.281.

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Currently CAD/CAM systems have become more and more common in automated manufacturing to enhance the accuracy and efficiency of machining process. On the other hand, 3D model processing technologies has long been researched in computer graphics (CG) fields. However, few algorithms were designed for the application of machining and manufacturing. In this paper, the current researches about the 3D model processing technologies in the application of freeform surface machining were introduced. These researches take the advantage of 3D model processing technology, and focus on the application of machining and manufacturing. They provide a new methodology to enhance the intelligence of the CAM, and improve the integration of CAD and CAM.
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27

Iwata, K., and N. Sugimura. "An Integrated CAD/CAPP System with “Know-hows” on Machining Accuracies of Parts." Journal of Engineering for Industry 109, no. 2 (May 1, 1987): 128–33. http://dx.doi.org/10.1115/1.3187102.

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An prototype of an integrated CAD/CAPP system named CIMS has been developed. The sequence of machine tools and the machining sequence are determined by the CIMS based on the models of the parts designed by the CAD system. A modeling system was developed to construct the models of the parts which include both the geometrical information and the technological information of the accuracy, the surface roughness and the material. Since the machining sequence is influenced by the accuracy of the part, a systematic method was proposed to describe the know-hows which give the relations between the machining accuracies and the machining sequences. A procedure was proposed to determine the sequence of machine tools and the machining sequence by applying the know-hows. The system developed is able to generate suitable process plan which is almost the same as ones designed by the experienced process planners.
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28

Zhang, Fei, and Jin Gui Wan. "UG Software CAD/CAM Technology in Shark Model Processing Application." Advanced Materials Research 510 (April 2012): 283–86. http://dx.doi.org/10.4028/www.scientific.net/amr.510.283.

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The first use of UG modeling tool to complete the shark 3D modeling; then using UG software to complete the automatic programming automatic programming function, and generates 3 axis machining program, then use the Yulong NC simulation software for NC machining simulation, validation procedures for the procedure to import CNC machine tool by processing, difficulty of shark processing fashion clamp design and processing.
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29

Zheng, Hong, Guo Rui Wu, and Wei Hua Xu. "Study on Machinery Manufacturing CAD/CAM NC Machining Technology." Advanced Materials Research 875-877 (February 2014): 983–87. http://dx.doi.org/10.4028/www.scientific.net/amr.875-877.983.

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With the development of computer technology, CAD / CAM technologies have been widely used in the machinery manufacturing industry. They have brought fundamental changes to product design and manufacturing method. Based on the characteristics of punching machine processing technology, the main content of this paper is the study on boards CAM key technology taking NC machining applications for boards punching as the background. This study takes VC + + software as the platform and widely applies VC + + development tools and OpenGL technology in the process of developing graphical simulation system. The purpose of this study is to achieve drawing function, automatically extract pixels in AutoCAD graph such as holes, and automatically generate NC machining program by the extracted pixels on the basis of the pixel extraction. This can ensure the uniqueness and accuracy of the data, so as to improve the efficiency of programming.
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GAO, San de, Masaaki WATANABE, Takuto SAGA, Reiji ARAOKA, Takahiko UEMURA, and Tikara FUJIKAWA. "3D-CAD and 5 Axial NC Machining of Gears." Proceedings of Design & Systems Conference 2003.13 (2003): 424–26. http://dx.doi.org/10.1299/jsmedsd.2003.13.424.

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31

Liu, Yazui, Gang Zhao, Oleksandr Zavalnyi, Xian Cao, Kang Cheng, and Wenlei Xiao. "STEP-Compliant CAD/CNC System for Feature-Oriented Machining." Computer-Aided Design and Applications 16, no. 2 (August 13, 2018): 358–68. http://dx.doi.org/10.14733/cadaps.2019.358-368.

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32

Purcar, Marius, Andrei Dorochenko, Leslie Bortels, Johan Deconinck, and Bart Van den Bossche. "Advanced CAD integrated approach for 3D electrochemical machining simulations." Journal of Materials Processing Technology 203, no. 1-3 (July 2008): 58–71. http://dx.doi.org/10.1016/j.jmatprotec.2007.09.082.

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33

Cheng, Xiang, Jun Ying Liu, Xian Hai Yang, Zhong Qiang Tian, and Peng Jia. "Study on the Dedicated CAD Sub-System for Custom Tooling." Advanced Materials Research 255-260 (May 2011): 1930–33. http://dx.doi.org/10.4028/www.scientific.net/amr.255-260.1930.

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Custom tooling is an effective method to improve surface roughness, geometrical accuracy, machining efficiency, and consequently the core competitiveness of the final products in very complicated freeform creation and micro/nano machining, such as the propeller, blisk and ductile-mode machining of hard and brittle materials. However, commercially available CAM systems have limitations in generating CNC programs for these customized tools due to considerations for special custom tool fabrication processes. Therefore unique CAM system is needed and consequently dedicated CAD sub-system is the prerequisite for such CAM system. In this paper, the dedicated CAD sub-system design is studied to extend the authors’ previous study. The characteristics of customized tools are summarized and analyzed. Then, the functions for the dedicated CAD sub-system are analyzed and defined. Finally, the system is designed and developed by using VC++, Open CASCADE, and ActiveX Data Object techniques.
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HARANUD, Zuanshi, Jiang ZHU, Tomohisa TANAKA, and Yoshio SAITO. "A1 Optimal Tool Path Generation Method for Freeform Surface Machining(Digital design and digital manufacturing(CAD/CAM))." Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2009.5 (2009): 3–8. http://dx.doi.org/10.1299/jsmelem.2009.5.3.

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35

Ahn, Sung H., V. Sundararajan, Charles Smith, Balaji Kannan, Roshan D’Souza, Ganping Sun, Ashish Mohole, et al. "CyberCut: An Internet-based CAD/CAM System." Journal of Computing and Information Science in Engineering 1, no. 1 (January 1, 2001): 52–59. http://dx.doi.org/10.1115/1.1351811.

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“CyberCut™” is a testbed for an Internet-based CAD/CAM system. It was specifically designed to be a networked, automated system, with a seamless communication flow from a client-side designer to a server-side machining service. The creation of CyberCut required several new software modules. These include: a) a Web-based design tool in which Design-for-Manufacturing information and machining rules constrain the designer to manufacturable parts; b) a geometric representation called SIF-DSG, for unambiguous communication between the client-side designer and the server-side process planner; c) an automated process planning system with several sub-modules that convert an incoming design to a set of tool-paths for execution on a 3-axis CNC milling machine. Using this software-pipeline, a CyberCut service, modeled on the MOSIS service for VLSI chips, has been now been launched for limited student-use at a group of cooperating universities.
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36

Kim, J. W., N. S. Covel, P. C. Guess, E. D. Rekow, and Y. Zhang. "Concerns of Hydrothermal Degradation in CAD/CAM Zirconia." Journal of Dental Research 89, no. 1 (December 4, 2009): 91–95. http://dx.doi.org/10.1177/0022034509354193.

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Zirconia-based restorations are widely used in prosthetic dentistry; however, their susceptibility to hydrothermal degradation remains elusive. We hypothesized that CAD/CAM machining and subsequent surface treatments, i.e., grinding and/or grit-blasting, have marked effects on the hydrothermal degradation behavior of Y-TZP. CAD/CAM-machined Y-TZP plates (0.5 mm thick), both with and without subsequent grinding with various grit sizes or grit-blasting with airborne alumina particles, were subjected to accelerated aging tests in a steam autoclave. Results showed that the CAD/CAM-machined surfaces initially exhibited superior hydrothermal degradation resistance, but deteriorated at a faster rate upon prolonged autoclave treatment compared with ground and grit-blasted surfaces. The accelerated hydrothermal degradation of CAD/CAM surfaces is attributed to the CAD/CAM machining damage and the absence of surface compressive stresses in the fully sintered material. Clinical relevance for surface treatments of zirconia frameworks in terms of hydrothermal and structural stabilities is addressed.
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Wan, Jin Gui, Xi Ping Wang, Wei Ding, and Wei Li. "Study on Numerical Control Machining Technology of Toy Car Cover." Applied Mechanics and Materials 150 (January 2012): 235–39. http://dx.doi.org/10.4028/www.scientific.net/amm.150.235.

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Based on UG II CAD/CAM system, the CNC machining process and technology of a toy car cover is studied in this paper. It includes three-dimension (3D) modeling, machining programming, fixture design and manufacturing, process parameter setting, tool path planning and editing, NC code generation (post processing), simulation processing, and practical machining. The part is manufactured successfully in a 3-axis CNC milling machine. It has a desirable shape and high accuracy. The result shows that, with the powerful CAD/CAM capabilities of UG, the integrated design and manufacturing of complex curved surface shell part is easy to implement, the process is reasonable and efficient, and the NC program is reliable. This exmple fully reflects the advantages of UG CAD/CAM integration technology. The method and technology introduced in this paper can provide valuable reference for processing of similar parts.
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Tzotzis, Anastasios, César García-Hernández, José-Luis Huertas-Talón, and Panagiotis Kyratsis. "CAD-Based Automated Design of FEA-Ready Cutting Tools." Journal of Manufacturing and Materials Processing 4, no. 4 (November 1, 2020): 104. http://dx.doi.org/10.3390/jmmp4040104.

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The resources of modern Finite Element Analysis (FEA) software provide engineers with powerful mechanisms that can be used to investigate numerous machining processes with satisfying results. Nevertheless, the success of a simulation, especially in three dimensions, relies heavily on the accuracy of the cutting tool models that are implemented in the analyses. With this in mind, the present paper presents an application developed via Computer-Aided Design (CAD) programming that enables the automated design of accurate cutting tool models that can be used in 3D turning simulations. The presented application was developed with the aid of the programming resources of a commercially available CAD system. Moreover, the parametric design methodology was employed in order to design the tools according to the appropriate standards. Concluding, a sample tool model was tested by performing a number of machining simulations based on typical cutting parameters. The yielded results were then compared to experimental values of the generated machining force components for validation. The findings of the study prove the functionality of the tool models since a high level of agreement occurred between the acquired numerical results and the experimental ones.
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ASANO, Tetsuya, Tomoya HIDA, and Akinobu GOTO. "A9 Study on Collision Free Machining using Simulation and CNC Openness(Digital design and digital manufacturing(CAD/CAM))." Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21 2009.5 (2009): 45–48. http://dx.doi.org/10.1299/jsmelem.2009.5.45.

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Nishida, Isamu, and Keiichi Shirase. "Machine Tool Assignment Realized by Automated NC Program Generation and Machining Time Prediction." International Journal of Automation Technology 13, no. 5 (September 5, 2019): 700–707. http://dx.doi.org/10.20965/ijat.2019.p0700.

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The present study proposed a method to automatically generate a numerical control (NC) program by referring to machining case data for each machine tool with only 3D-CAD models of a product and workpiece as the input data, and to select machine tools for machining the target removal region among several machine tools with different characteristics. The special features of the proposed method are described as follows. The removal volume can be automatically obtained from the total removal volume (TRV), which is extracted from the workpiece and product using a Boolean operation by dividing it on the XY plane. The removal region changed according to the determined machining sequence. The conditions for machining the removal region is automatically determined according to the machining case data, which is stored by linking the geometric properties of the removal region with the machining conditions determined by experienced operators. Furthermore, an NC program is automatically generated based on the machining conditions. The machine tools for machining the target region are selected according to the predicted machining time of each machine tool connected by a network. A case study was conducted to validate the effectiveness of the proposed system. The results confirm that machining can be conducted using only 3D-CAD models as input data. It was suggested that the makespan would be shortened by changing the machining sequence from the optimized machining sequence when machining a plurality of products.
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Xu, Jiu Nan, Zhi Xin Hu, and Ling Xiao Weng. "Mechanical Cutting Process of Cutting Robot Based on CAD/CAM Integrated System." Applied Mechanics and Materials 716-717 (December 2014): 1666–70. http://dx.doi.org/10.4028/www.scientific.net/amm.716-717.1666.

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Control problem of mechanical cutting is a development bottleneck of processing technology of robot. As compared to the simple mechanical process, the control process of automatic processing trajectory for cutting robot is relatively complex. This paper uses the CAD/CAM integrated control system to control the robot cutting process, which realizes the integration design of robot machining process. The extraction of G code is through the VC program, and then it uses MATLAB to do data analysis, which completes the design of process parameter for cutting path. Finally we use ADAMS simulation to forecaster the process parameters and machining process, through the analysis of the data it improves the machining accuracy. And it provides a theoretical reference for the research on mechanical automation process.
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Čuboňová, Nadežda. "Utilization of CAD/CAM System Edgecam in Programming of CNC Milling Machine." Applied Mechanics and Materials 808 (November 2015): 280–85. http://dx.doi.org/10.4028/www.scientific.net/amm.808.280.

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Today's modern production already not does without sophisticated CAD/CAM system. The present CAD/CAM systems integrate part modelling and engineering design, proposal of technological documentation in the form of NC programs and operational management of production within a one computer system. Their utilization allows the programmer to create machining technology, to define the tool paths and to generate NC programs for very complex shape parts. The article focuses on the use of CAD/CAM system Edgecam, in the formation of the machining process for a milling Machine Emco Concept Mill (CM) 105. It describes the creation of postprocessor for Sinumerik 840D control system and its application and verifying in the production of specific components.
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Fan, Li Cheng, and Feng Feng Zhang. "A CAD Modeling Method of Dental Surface Based on Scanning Data." Applied Mechanics and Materials 151 (January 2012): 111–15. http://dx.doi.org/10.4028/www.scientific.net/amm.151.111.

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The measurement of the teeth surface and the CAD modeling of the point cloud data are the key basics for the following CNC machining, and the complete data can only be obtained through multi-perspective scanning method. Using ICP iteration algorithm that based on point-to-line to the multi-perspective scanning data, specific to the features of layering scanning, retrograde the 3D data registration to 2D planar registration, and provide the cutting and splicing algorithm for registered tooth data, obtain precise and integrated tooth surface point cloud data, which serves as the CAD model for the following CNC machining.
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NARABU, Yusuke, Jiang ZHU, Tomohisa TANAKA, and Yoshio SAITO. "1111 Automatic Manufacturing Feature Extraction of CAD models for Machining." Proceedings of Conference of Hokuriku-Shinetsu Branch 2010.47 (2010): 409–10. http://dx.doi.org/10.1299/jsmehs.2010.47.409.

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Iyer, Arjun, Shiv G. Kapoor, and Richard E. DeVor. "CAD data visualization for machining simulation using the STEP standard." Journal of Manufacturing Systems 20, no. 3 (January 2001): 198–209. http://dx.doi.org/10.1016/s0278-6125(01)80041-8.

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MORISHIGE, Koichi. "From Image to Shape CAD/CAM for Multiaxis Controlled Machining." Journal of the Society of Mechanical Engineers 111, no. 1073 (2008): 298–301. http://dx.doi.org/10.1299/jsmemag.111.1073_298.

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Kim, Byung Chul, Ilhwan Song, and Duhwan Mun. "Practical method for the fast generation of a CAM model for jet engine parts." Advances in Mechanical Engineering 13, no. 3 (March 2021): 168781402110027. http://dx.doi.org/10.1177/16878140211002700.

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Manufacturers of machine parts operate computerized numerical control (CNC) machine tools to produce parts precisely and accurately. They build computer-aided manufacturing (CAM) models using CAM software to generate code to control these machines from computer-aided design (CAD) models. However, creating a CAM model from CAD models is time-consuming, and is prone to errors because machining operations and their sequences are defined manually. To generate CAM models automatically, feature recognition methods have been studied for a long time. However, since the recognition range is limited, it is challenging to apply the feature recognition methods to parts having a complicated shape such as jet engine parts. Alternatively, this study proposes a practical method for the fast generation of a CAM model from CAD models using shape search. In the proposed method, when an operator selects one machining operation as a source machining operation, shapes having the same machining features are searched in the part, and the source machining operation is copied to the locations of the searched shapes. This is a semi-automatic method, but it can generate CAM models quickly and accurately when there are many identical shapes to be machined. In this study, we demonstrate the usefulness of the proposed method through experiments on an engine block and a jet engine compressor case.
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Muhamad Bustaman, Nurul Wahieda, and Mohd Salman Abu Mansor. "A Study on CAD/CAM Application in CNC Milling Using Industrial Clay." Applied Mechanics and Materials 761 (May 2015): 32–36. http://dx.doi.org/10.4028/www.scientific.net/amm.761.32.

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Throughout the production process, improper planning and exploitation of the CAD/CAM system leads to the low level utilization of the CNC milling machine. In product design, tangible prototype is fabricated using CAD/CAM techniques in the design phase to analyse and modify the product before actual production. In this research, industrial clay is used as the prototype material. The objectives of the study are to investigate the machining parameters of industrial clay using the CNC milling machine and to apply the CAD/CAM system in producing a clay sample part via the CNC milling machine. Using uncomplicated and low cost setup for the fabrication method, an industrial clay sample part is prepared in the CAD/CAM system and shaped using the CNC milling machine. The difference between the simulated and the actual machining time of the machined part is analysed.
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Zvonarev, Ivan Evgenevich, Andrey Igorevich Folomkin, and Eduard Hamitovich Muratbakeev. "Сomputer Simulation of Machining." Key Engineering Materials 743 (July 2017): 248–51. http://dx.doi.org/10.4028/www.scientific.net/kem.743.248.

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The present paper presents the results of an analysis of the functioning principles of contemporary CAD systems and of their capabilities for modern process modelling. Requirements to process modelling software have been set forth. Physical processes during cutting of metals have been considered. The selection of Delphi programming environment has been substantiated. An interface, an algorithm and a program code for part machining modelling software has been developed for an all-purpose thread-cutting lathe with 3D graph involvement in OpenGL. A description of the software work and its specifications have been provided. Ways have been defined for further improvement and development of the developed software, as well as its promising application fields.
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Ihara, Yukitoshi, Koichiro Takubo, Tatsuo Nakai, and Ryuta Sato. "Effect of CAD/CAM Post Process on S-Shaped Machining Test for Five-Axis Machining Center." International Journal of Automation Technology 13, no. 5 (September 5, 2019): 593–601. http://dx.doi.org/10.20965/ijat.2019.p0593.

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ISO 10791-7, the test standard for machining centers, was revised in 2014 to add the test method for five-axis machining centers. However, an S-shaped test was additionally proposed as an accuracy test of aircraft parts from China immediately before the establishment of the test standard. In an ISO meeting, various problems such as creating three-dimensional models and evaluation items have been indicated for the proposed test method. By revising these problems, the standard was finally completed and will be introduced as an informative annex soon. However, it is still an inappropriate test method from the viewpoint of performance inspection for machine tools. In this research, the S-shaped test method draft proposed in September 2016 is tested using two types of five-axis machining centers and commercial CAM software. Consequently, a hidden problem is revealed, that is, an abrupt movement that affected the final result is added to the machine because the rotation direction of the rotary axes is not ideal. This is attributed to the performance of the CAM software’s post processor that converts from CL data to NC program. This study provides some insights into avoiding the problem and obtaining better test results.
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