电加工与模具
電加工與模具
전가공여모구
Electromachining & Mould
2015年
5期
13-16
,共4页
电火花线切割加工%反向插补%单步追踪法
電火花線切割加工%反嚮插補%單步追蹤法
전화화선절할가공%반향삽보%단보추종법
WEDM%reversible interpolation%step-by-step interpolation
电火花线切割加工半导体材料时,正常放电状态和短路状态的电压波形相近而无法区分。根据一定周期内的电流脉冲个数除以电压脉冲个数(即电流脉冲概率)与进给速度的关系,当电流脉冲概率达到一定阈值时,要求进给系统能够回退。但一般插补算法都是单向的,无法做到严格按原轨迹回退,故要求有反向插补算法。由单步追踪法推导出反向插补算法,并通过插补实例证明其正确性。
電火花線切割加工半導體材料時,正常放電狀態和短路狀態的電壓波形相近而無法區分。根據一定週期內的電流脈遲箇數除以電壓脈遲箇數(即電流脈遲概率)與進給速度的關繫,噹電流脈遲概率達到一定閾值時,要求進給繫統能夠迴退。但一般插補算法都是單嚮的,無法做到嚴格按原軌跡迴退,故要求有反嚮插補算法。由單步追蹤法推導齣反嚮插補算法,併通過插補實例證明其正確性。
전화화선절할가공반도체재료시,정상방전상태화단로상태적전압파형상근이무법구분。근거일정주기내적전류맥충개수제이전압맥충개수(즉전류맥충개솔)여진급속도적관계,당전류맥충개솔체도일정역치시,요구진급계통능구회퇴。단일반삽보산법도시단향적,무법주도엄격안원궤적회퇴,고요구유반향삽보산법。유단보추종법추도출반향삽보산법,병통과삽보실예증명기정학성。
Wire electrical-discharge machining (WEDM) of semiconductor material ,the voltage waveform of normal discharge condition and short-circuit is too similar to differentiate. According to relation between current probability (current pulse number divided by the voltage pulse number) within a certain period and feed speed,when current pulse probability reaches a certain threshold,the feed system is required to fallback. But general interpolation algorithm is typically a single direction interpolation algorithm and fallback in strict accordance with the original track back can not be achieved,therefore inverse interpolation algorithm must be proposed. The reversible interpolation algorithm was deduced on the basis of step-by-step trace method ,and the interpolation examples show correctness of the interpolation algorithm.