Research on Precision Pulse Power Technology of WEDM
Research on Precision Pulse Power Technology of WEDM
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线切割精密脉冲电源技术研究
DOI：
10.1016/j.procir.2013.03.090
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
W. Xu
中科院分区：
文献类型：
--
作者：
Y. Fan;J. Bai;C. Li;W. Xu
高速走丝电火花线切割加工（WEDM-HS）以其独特的优势，已成为航空航天、模具等领域加工精密零件的一种极其重要且不可替代的手段。脉冲电源是电火花线切割机的关键部件，直接制约着电火花线切割机整体性能的提高。目前，商用快走丝线切割设备所使用的脉冲电源一般用于粗加工，其加工表面粗糙度和加工精度较低。研制了一种基于微控制器（MCU）和双复杂可编程逻辑器件（CPLD）的多模式精密脉冲电源。分析了可控阻容精密脉冲电源模式下电容对可加工厚度和表面粗糙度的影响。通过适当选择电容量，使充电时间的三次方等于脉冲宽度，在脉冲宽度、脉冲间隔和限流电阻不变的情况下，获得了最佳的表面粗糙度和最小的单脉冲能量。通过正交试验对影响表面粗糙度和加工速度的工艺参数进行了分析和优化。采用优化后的加工参数进行了五次切削试验，得到了工件厚度为40 mm时，最佳表面粗糙度达到0.96 m。
High speed wire electrical discharge machining (WEDM-HS) has been an extremely important and irreplaceable means of processing precision parts in aerospace, mold and other fields owing to its unique advantages. The pulse power is the key component of the WEDM, which directly restricts the improvement of WEDM overall performance. At present, the pulse power used in commercial WEDM-HS equipment, whose processing surface roughness and machining accuracy are low, is generally applied to rough machining. This paper develops a multi-mode precision pulse power based on micro controller unit (MCU) and double complex programmable logic devices (CPLD), of which electric parameters can be widely adjusted. Effects of capacitance on achievable processing thickness and surface roughness are analyzed under controllable resistance and capacitance precision pulse power mode. By properly selecting capacitance to make triple of charging time equal to pulse duration, the best surface roughness and minimum single pulse energy are obtained when pulse duration, pulse interval and current-limiting resistance remain constant. The paper also analyzes and optimizes the parameters affecting surface roughness and processing speed through orthogonal experiment. Then five-cutting experiments are conducted using the optimized machining parameters, obtaining that the best surface roughness reaches 0.96m when workpiece thickness is 40 mm.
DOI：
10.1007/978-3-642-18369-0_61
发表时间：
2010-10
期刊：
--
影响因子：
--
作者：
Guang-yao Xiong;Meizhu Zheng;Deying Li;Longzhi Zhao;Yanlin Wang;Minghui Li
通讯作者：
Guang-yao Xiong;Meizhu Zheng;Deying Li;Longzhi Zhao;Yanlin Wang;Minghui Li
DOI：
10.1007/s00170-006-0623-2
发表时间：
2007-08
期刊：
The International Journal of Advanced Manufacturing Technology
影响因子：
--
作者：
W. M. Lee;Y. S. Liao
通讯作者：
W. M. Lee;Y. S. Liao
影响因子：
8.7
作者：
Mukherjee, Rajarshi;Chakraborty, Shankar;Samanta, Suman
通讯作者：
Samanta, Suman