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Research on Tool Wear Compensation in Micro-EDM

Author: WangChangFa
Tutor: ZhaoWanSheng
School: Shanghai Jiaotong University
Course: Mechanical Manufacturing and Automation
Keywords: EDM Electrode wear Compensate CPLD
CLC: TG661
Type: Master's thesis
Year: 2009
Downloads: 183
Quote: 0
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Abstract


Fine electric field of microfabrication processing has become a very important research direction . Fine EDM tool electrode inevitably produce loss , thereby increasing the difficulty of processing of high-precision three-dimensional curved surface must be effectively compensated to improve the machining accuracy . Launched a process for EDM electrode wear compensation method . The the electrode compensation method based on the discharge parameters and the effective number of pulses to predict the loss . The modeling is based on: single sizes loss of the discharge electrode is fixed, under certain processing conditions , by detecting the effective discharge pulse number of the projected electrode loss , thereby loss compensation . Designed for detection tool electrode and the workpiece electrode effective discharge pulse printed circuit board (PCB), and then obtained through experiments without compensation VHDL hardware programming language development program , to improve the flexibility of the PCB board ; state electrode wear and develop appropriate compensation strategies , programmable multi - axis motion control card ( PMAC ) to write compensation control procedures, and appropriate compensation test to verify the effectiveness of the compensation method of compensation module developed ; Finally, the nerve network in the EDM electrodes loss forecast in the effectiveness and timeliness, laid the foundation for the use of neural networks to improve the effective number of pulses to predict the effectiveness of the electrode wear .

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal cutting and machine tools > Special machine tools and processing > Electric machines and their processing
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