Relevant bibliographies by topics / Advantage and disadvantage CNC machine

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Advantage and disadvantage CNC machine'

Author: Grafiati
Published: 4 June 2021
Last updated: 3 February 2022

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Journal articles on the topic "Advantage and disadvantage CNC machine"

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Renn, Jyh Chyang, Wen Jen Hsu, and Yun Ruei Li. "Constant Pressure Control for Energy Efficient Lathe Turret." Key Engineering Materials 661 (September 2015): 3–9. http://dx.doi.org/10.4028/www.scientific.net/kem.661.3.

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Hydraulic system plays an important role in many power systems such as excavator, braking system of vehicle and machine tool. Generally speaking, hydraulic control system can be divided into two different driving concepts. The first one is the well-known valve-controlled system and the second one is the pump-controlled system. The former possesses the feature of fast dynamic response. However, the poor energy-saving performance is its major fault. On the contrary, the pump-controlled system has the significant advantage of energy-saving which meets the current demand in modern machine design, but has the disadvantage of slower dynamic response. With the advancement of electric-motor system, however, this disadvantage has been greatly improved. In this paper, the simulation analysis of a newly developed energy-efficient hydraulic CNC lathe turret based on constant pressure control scheme is presented. Instead of the conventional fixed displacement hydraulic pump, the new energy-efficient system utilizes an internal gear pump together with an AC servo motor as its driving power source. In addition, a closed-loop control scheme using PID control is adopted. From simulation results, the new energy-efficient design can reduce the waste of the output flow-rate of the pump through the relief valve that generally happens in conventional hydraulic lathe and then achieve the purpose of designing an energy-efficient hydraulic lathe.
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Farias, João B. S., Miguel A. B. E. Martins, Daniel G. Afonso, Sonia R. H. Marabuto, Jorge A. Ferreira, and R. J. Alves de Sousa. "CAD/CAM Strategies for a Parallel Kinematics SPIF Machine." Key Engineering Materials 554-557 (June 2013): 2221–29. http://dx.doi.org/10.4028/www.scientific.net/kem.554-557.2221.

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Single point incremental forming has attracted the interest of researchers in the last decade for the production of prototypes and small batch production of sheet-based parts [1, 2]. This technique allows the manufacture of parts without using expensive die sets. The SPIF (Single point incremental forming) process can be performed on different equipments such as adapted CNC milling machines, serial robots and built proposed machines [3]. Every solution has advantages and disadvantages. This work presents the CAD/CAM strategies for a parallel kinematics SPIF machine, designed and built at the University of Aveiro [3]. This machine brings a new approach to the SPIF industry. The machinery used to perform SPIF operations has limitations in their work volume with limited movements and in the magnitude of applicable forces. With that in mind, this machine was projected to overcome that obstacle, and was provided with a system with 6 degrees of freedom, while maintaining the ability to apply high loads. The disadvantage is the increase in volume occupied by the kinematic system. The manufacture of new parts could be reached out with more flexibility on the chosen tool path. The first step is the product design in the commercial CAD system. Next step is generating the tool path of the forming tool. This step is very important to achieve the desired part shape. It is used a commercial CAM system (EdgeCAM 2012®), which has resources from three up to five axis strategies. The last step is to send the information to the machine’s control system, based on real-time software. This paper will describe each step with more details.
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Lu, Shengyu. "Research on integrated manufacturing technology of CNC machine tool and 3D printing." E3S Web of Conferences 253 (2021): 01054. http://dx.doi.org/10.1051/e3sconf/202125301054.

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CNC machine tools and 3D printing technology belong to two different processing methods, which have their own advantages and disadvantages. In order to promote the development of high-end manufacturing industry, we can combine CNC machine tools and 3D printing technology to give full play to their advantages. This paper analyzes the integrated manufacturing technology of CNC machine tools and 3D printing, further improve the level of industrial production in China.
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Müller, Marcel, and Elmar Wings. "An Architecture for Hybrid Manufacturing Combining 3D Printing and CNC Machining." International Journal of Manufacturing Engineering 2016 (October 9, 2016): 1–12. http://dx.doi.org/10.1155/2016/8609108.

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Additive manufacturing is one of the key technologies of the 21st century. Additive manufacturing processes are often combined with subtractive manufacturing processes to create hybrid manufacturing because it is useful for manufacturing complex parts, for example, 3D printed sensor systems. Currently, several CNC machines are required for hybrid manufacturing: one machine is required for additive manufacturing and one is required for subtractive manufacturing. Disadvantages of conventional hybrid manufacturing methods are presented. Hybrid manufacturing with one CNC machine offers many advantages. It enables manufacturing of parts with higher accuracy, less production time, and lower costs. Using the example of fused layer modeling (FLM), we present a general approach for the integration of additive manufacturing processes into a numerical control for machine tools. The resulting CNC architecture is presented and its functionality is demonstrated. Its application is beyond the scope of this paper.
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Xu, Xin Jian. "CNC Transformation Method for the Study." Advanced Materials Research 490-495 (March 2012): 1256–60. http://dx.doi.org/10.4028/www.scientific.net/amr.490-495.1256.

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This paper describes the need for transformation of CNC machine tools, CNC machine tools and a brief introduction to the content and transformation of the advantages and disadvantages, but focuses on how the transformation of CNCmachine tools including CNC system selection, transformation NC modificationof the main mechanical components and CNC transformation of the main steps,and cited several examples of digital transformation, and finallyshows the numerical transformation of the problem and made recommendations.
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Liu, Yan. "Application and Study of CNC Network System Based on DNC." Advanced Materials Research 655-657 (January 2013): 1214–17. http://dx.doi.org/10.4028/www.scientific.net/amr.655-657.1214.

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Three solutions to network CNC machines are introduced. Advantages and disadvantages are compared. Wireless network solution supports a wider range of CNC communications but easy be disturbed. Single port server solution ensure stable signal but hardware cost is high. TCP/IP solution is stable and reliability while most low-end CNCs do not have Ethernet ports. CNC quantity, port type, distance between CNCs and computers, required speed and cost should be considered to choose right solutions.
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Sang, Zhen, Tai Yong Wang, Xiang Xiang Zou, and He Nan Xu. "Research on Online Collision Detection Algorithm of CNC Machine Tools." Key Engineering Materials 693 (May 2016): 1780–85. http://dx.doi.org/10.4028/www.scientific.net/kem.693.1780.

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Collision detection is the core of the numerical control system of intelligent manufacturing in the manufacturing process of rapid feeding, positioning and cutting. We need to avoid collision between the cutting tools, machine tools and workpiece. Based on the characteristic of five-axis CNC system, we analyze the advantages and disadvantages of Hierarchical Mesh Segmentation and Octree. At last, we use the collision detection algorithm of cuboid and separation axis to optimize the algorithm of traditional NC machine tool collision detection, which improve the detection efficiency and accuracy.
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Koval’ova, Iryna. "DEVICE FOR INCREASING THE PRODUCTIVITY OF MILLING MACHINE OPERATION WITH CNC MCV-1000." ENGINEERING, ENERGY, TRANSPORT AIC, no. 3(106) (November 27, 2019): 73–79. http://dx.doi.org/10.37128/2520-6168-2019-3-9.

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Тhe work of the milling machine with the CNC MCV-1000 is considered. A device that significantly improves the productivity of this machine when performing the operation of milling round holes along the outer surface of the pipe with a certain step is shown. The results obtained by experimental means are indicated. Analysis of current trends in the development of machine tool industry indicates the need to increase the technical level of metalworking equipment with developed complexes of technological operations. A significant role is played by the equipment of metalworking machines, namely, specialized devices for various types of processing. The goal is to increase metalworking productivity. As a result of the analysis of existing devices revealed their advantages and disadvantages. A new design of the device for the simultaneous processing of four pipes with a length of up to 1000 mm and a diameter of 32 mm on a MCV-1000 CNC milling machine is proposed. This device is designed for reliable fixation of four pipes simultaneously for the operation of milling round holes along the outer surface of the pipe with a certain step. The introduction of this device showed a double increase in productivity compared with the previous device, which was used at the enterprise.
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Chen, Hong Ze, Zhong De Shan, and Hong Zhao Dong. "Research of Foam Pattern Processing for Lost Foam Casting." Applied Mechanics and Materials 331 (July 2013): 600–603. http://dx.doi.org/10.4028/www.scientific.net/amm.331.600.

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In the whole process of the LFC (or evaporative pattern casting, EPC), the quality of the foam pattern play a decisive role to the final casting quality. The present processing methods for the foam pattern are discussed, including foaming molding, manual cutting, and CNC machining, rapid prototyping, also the advantages and disadvantages of these processing methods are analyzed. As CNC machining become the main trend for foam pattern processing, some CNC machine oriented tools are summarized, including the hot wire foam cutter, the hot knife foam cutter, and the modified tools based on the traditional tools.
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Lu, Hua. "Design on the New Composite Rail of Beam in CNC Gantry Machine Tool." Advanced Materials Research 945-949 (June 2014): 1713–16. http://dx.doi.org/10.4028/www.scientific.net/amr.945-949.1713.

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The arrangement form of beams in CNC gantry machine usually arranged in the upper and lower two rails, But in heavy cutting,Large overturning moment will reduce the rigidity and precision of the machine. Therefore, on basis of analysis of the advantages and disadvantages of the conventional rail , a new composite rail structure is designed. Been put into use, sensitivity, rigidity, vibration force, load force and moment resisting capability of oriented machinery and deputy campaign on process equipment is greatly improved.
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Dissertations / Theses on the topic "Advantage and disadvantage CNC machine"

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Záveský, Zbyněk. "Návrh nové technologie výroby vybrané součásti." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-241668.

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This master’s thesis is focused on CNC machines. It deals with the characteristics, description, coordinates, advantages and disadvantages of the CNC machines and utilization of the CAD/CAM software. The next part of this thesis deals with the suggestion for choosing the best technology for milling slots. Milling strategy, cutting processes and cutting conditions are described in this part as well as all the issues concerning the manufacturing of the milling slots.
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Book chapters on the topic "Advantage and disadvantage CNC machine"

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Flores-Fuentes, Wendy, Moises Rivas-Lopez, Daniel Hernandez-Balbuena, Oleg Sergiyenko, Julio C. Rodríguez-Quiñonez, Javier Rivera-Castillo, Lars Lindner, and Luis C. Basaca-Preciado. "Applying Optoelectronic Devices Fusion in Machine Vision." In Developing and Applying Optoelectronics in Machine Vision, 1–37. IGI Global, 2017. http://dx.doi.org/10.4018/978-1-5225-0632-4.ch001.

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Machine vision is supported and enhanced by optoelectronic devices, the output from a machine vision system is information about the content of the optoelectronic signal, it is the process whereby a machine, usually a digital computer and/or electronic hardware automatically processes an optoelectronic signal and reports what it means. Machine vision methods to provide spatial coordinates measurement has developed in a wide range of technologies for multiples fields of applications such as robot navigation, medical scanning, and structural monitoring. Each technology with specified properties that could be categorized as advantage and disadvantage according its utility to the application purpose. This chapter presents the application of optoelectronic devices fusion as the base for those systems with non-lineal behavior supported by artificial intelligence techniques, which require the use of information from various sensors for pattern recognition to produce an enhanced output.
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Flores-Fuentes, Wendy, Moises Rivas-Lopez, Daniel Hernandez-Balbuena, Oleg Sergiyenko, Julio C. Rodríguez-Quiñonez, Javier Rivera-Castillo, Lars Lindner, and Luis C. Basaca-Preciado. "Applying Optoelectronic Devices Fusion in Machine Vision." In Natural Language Processing, 184–213. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-0951-7.ch010.

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Machine vision is supported and enhanced by optoelectronic devices, the output from a machine vision system is information about the content of the optoelectronic signal, it is the process whereby a machine, usually a digital computer and/or electronic hardware automatically processes an optoelectronic signal and reports what it means. Machine vision methods to provide spatial coordinates measurement has developed in a wide range of technologies for multiples fields of applications such as robot navigation, medical scanning, and structural monitoring. Each technology with specified properties that could be categorized as advantage and disadvantage according its utility to the application purpose. This chapter presents the application of optoelectronic devices fusion as the base for those systems with non-lineal behavior supported by artificial intelligence techniques, which require the use of information from various sensors for pattern recognition to produce an enhanced output.
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Ameddah, Hacene. "Integrated Kinematic Machining Error Compensation for Impeller Rough Tool Paths Programming in a Step-Nc Format Using Neural Network Approach Prediction." In Artificial Neural Network Applications in Business and Engineering, 144–70. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-3238-6.ch007.

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The most important components used in aerospace, ships, and automobiles are designed with free form surfaces. An impeller is one of the most important components that are difficult to machine because of its twisted blades. This research book is based on the premise that a STEP-NC program can document “generic” manufacturing information for an impeller. This way, a STEP-NC program can be made machine-independent and has an advantage over the conventional G-code-based NC program that is always generated for a specific CNC machine. Rough machining is recognized as the most crucial procedure influencing machining efficiency and is critical for the finishing process. The research work reported in this chapter focuses on introduces a fully STEP-compliant CNC by putting forward an interpolation algorithm for non uniform rational basic spline (NURBS) curve system for rough milling tool paths with an aim to solve the problems of kinematic errors solutions in five axis machine by neural network implementation.
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Conference papers on the topic "Advantage and disadvantage CNC machine"

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Alazzam, Anas, Bashar El-Khasawneh, and Mohammad Abutayeh. "Simple, Fast, and Low Cost Fabrication Methods of Microchannels for Manipulation of Living Cells." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-66152.

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This work details simple non-cleanroom fabrication techniques to build hermetic microchannels using laboratory available material and equipment. Four different methods are presented for fast fabrication of microchannels at low cost. The microchannels are to be used for the manipulation of living cells. These methods of fabrication of microfluidics devices have previously been used and documented as reactors, fluid mixer, and for fluids transportation and inspection. In this work, all methods were used for manipulation of living cells. Each method, its advantages and disadvantages for this particular application are reported. The microfluidic device built using the first method includes a polymer-based part and a glass substrate with a layer of patterned electrodes. The Polymer-based microchannel is made outside the cleanroom facility using a simple mold made from adhesive tape. Moreover, the fabrication of a non-polymer microchannel made from double-sided tape is described. The microchannel height is about 50 μm while the width varies between 100 μm to a few hundred microns. The third method of fabrication is made by a 3D printer. The master molds for the polymer-based microfluidic device are fabricated by 3D printing of biocompatible material on glass substrate. The fourth method is a simple embossing of a male die in plastic or polymer substrate. A computer numerical control (CNC) machine was used to fabricate the embossing mold in stainless steel, brass, and aluminum. Microchannels were created by stamping the mold in a Cyclic Olefin Copolymer (COC) substrate.
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Smaili, Ahmad, Ramsey Hemadeh, Firas Zeineddine, and Barbar Akle. "ModelAngelo: A Rapid Prototyping System for Polystyrene." In ASME 2002 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/detc2002/dac-34137.

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This paper presents a new complete CAD-driven rapid prototyping system for polystyrene. ModelAngelo, as it is called, consists of six subsystems featuring hardware and software. The system utilizes a virtual 3D CAD model to produce a set of commands used to control a 5-axis CNC Machine to move a heated-wire tool into a block of polystyrene to form the desired surface. The ultimate goal of ModelAngelo is to reach the stage of “what you see is what you get”. An overview of ModelAngelo system is first presented followed by a detailed discussion of ModelAngeloSoftware. The various mechanical subsystems responsible for realizing the final product are then described. Advantages and disadvantages of several tooltip designs are discussed and the best solution is selected. The main features of the robotic arm, which carry the tooltip is also discussed in detail. Finally ModelAngelo controller that manages the interaction between software and hardware is briefly highlighted and possible applications of ModelAngelo are suggested.
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Wang, Shih-Ming, Han-Jen Yu, and Hung-Wei Liao. "A New High-Efficiency Error Compensation System for CNC Multi-Axis Machine Tools." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-60550.

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To enhance the accuracy of CNC machines for the request of modern industry, an effective static/quasi-static error compensation system composing of an element-free interpolation algorithm based on the Galerkin method for error prediction, a recursive software compensation procedure, and an NC-code converting software, is developed. Through automatically analyzing the machining path, the new error prediction method taking into the consideration of the fact that machine structure is non-rigid, can efficiently on-line determine the position errors of the cutter for compensation without computing a complex error model. The predicted errors are then compensated based on a recursive compensation algorithm. Finally, a compensated NC program will be automatically generated by the NC-code converting software for the precision machining process. Because of the advantage of element-free theory, the error prediction method can flexibly and irregularly distributing nodal points for accurate error prediction for a machine with complex error distribution characteristics throughout the workspace. To verify the algorithm and the developed system, cutting experiments were conducted in this study, and the results have shown the success of the proposed error compensation system.
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Wang, Wencai, and Derek M. Yip-Hoi. "Modeling and Identification of Feed Drive Kinematics and Cycle Time Calculation." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-41651.

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Cycle time calculation plays a major role in the design of manufacturing systems. Accurate estimates are needed to correctly determine the capacity of a line in terms of the number of machines that must be purchased. Over estimation results in excess capacity and under estimation leads to unsatisfied demand. Due to the high automation and cutting speeds of modern machining processes, cycle time calculation must consider both the timing of various machining actions and the kinematics of feed motions. This paper presents a cycle time calculation algorithm that gives accurate cycle time results by considering the effects of jerk and acceleration of the machine tool drives. The kinematic model for axis motion is based on trapezoidal acceleration profiles along the toolpaths. Based on this model, an algorithm for identifying the kinematic parameters has been developed. This algorithm has the advantage of utilizing a minimal set of axis motion data thus reducing the amount of data that must be collected from experiments by the machine tool vendor or the machine tool’s enduser. The proposed cycle time calculation algorithm has been verified in machining a V6 cylinder head on a four axis CNC machine.
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Galel, Zev, James L. Hunt, and Thomas H. Unger. "Laser Guidance for Repairing Gas Turbine Parts." In ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/94-gt-006.

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As a result of normal operating conditions, jet engine parts tend to distort. During repair, many of these parts require some form of selective cutting. Due to the differences between each individual part, automation such as CNC machining becomes complex. The need to map each individual part prior to machining has prohibited repair facilities from introducing sophisticated automation. This paper presents for the first time a novel method that addresses many problems related to selective material removal in Jet Engine repairs. Similar to a terrain-following cruise missile, a laser guided cutter is used to follow a selected datum surface. For example, in the case of Honeycomb Airseals, the thin laser beam penetrates through the honeycomb cell structure to follow the base metal. The method minimizes parent metal removal and under-minimum-wall condition. As a result, life potential of parts is extended, and repair costs are reduced. The ability to track a moving part and modify the cutting path automatically produces one more significant advantage: accurate set-up of a part on a machine is no longer critical. The method has applications in the repair of airseals, frames and cases, and airfoils.
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Jain Sudhir, Prathik, Ravindra Holalu Venkatadas, Naveen Prakash Goravi Vijaya Dev, and Ugrasen Gonchikar. "Estimation and Comparison of Acoustic Emission Parameters and Surface Roughness in Wire Cut Electric Discharge Machining of Stavax Material Using Multiple Regression Analysis and Group Method Data Handling Technique." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-50596.

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Wire Electrical Discharge Machining (WEDM) is a specialized thermal machining process capable of accurately machining parts with varying hardness or complex shapes, which have sharp edges that are very difficult to be machined by the main stream machining processes. Selection of cutting parameters for obtaining higher cutting efficiency or accuracy in WEDM is still not fully solved, even with most up-to-date CNC WEDM machine. It is widely recognised that Acoustic Emission (AE) is gaining ground as a monitoring method for health diagnosis on rotating machinery. The advantage of AE monitoring over vibration monitoring is that the AE monitoring can detect the growth of subsurface cracks whereas the vibration monitoring can detect defects only when they appear on the surface. This study outlines the estimation of AE parameters viz., signal strength, absolute energy, RMS in the WEDM. Stavax (modified AISI 420) steel material was machined using different process parameters based on Taguchi’s L’16 standard orthogonal array. Among different process parameters voltage and flush rate were kept constant. Parameters such as pulse-on time, pulse-off time, current and bed speed was varied. Molybdenum wire having diameter of 0.18 mm was used as an electrode. Simple functional relationships between the parameters were plotted to arrive at possible information on surface roughness and AE signals. But these simpler methods of analysis did not provide any information about the status of the work material. Thus, there is a requirement for more sophisticated methods that are capable of integrating information from the multiple sensors. Hence, methods like Multiple Regression Analysis (MRA) and Group Method of Data Handling (GMDH) have been applied for the estimation of surface roughness, AE signal strength, AE absolute energy and AE RMS. The GMDH algorithm is designed to learn the process by training the algorithm with the experimental data. The experimental observations are divided into two sets: the training set and testing set. The training set is used to make the GMDH learn the process and the testing set will check the performance of GMDH. Different models can be obtained by varying the percentage of data in the training set and the best model can be selected from these, viz., 50%, 62.5% and 75%. The best model is selected from the said percentages of data. Number of variables selected at each layer is usually taken as a fixed number or a constantly increasing number. It is usually given as fractional increase in number of independent variables present in the previous level. Three different criterion functions, viz., Root Mean Square (Regularity) criterion, Unbiased criterion and Combined criterion were considered for the estimation. The choice of criterion for node selection is another important parameter for proper modeling. From the results it was observed that, AE parameters and estimated surface roughness values were correlates well with GMDH when compare to MRA.
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