外文翻譯---刀具前角對(duì)切削加工振動(dòng)的影響-其他專(zhuān)業(yè)-文庫(kù)吧資料
2025-01-27 09:22本頁(yè)面
【正文】 ue to change of working angle, it makes γoe0176。 while γ0≥0176。 with rake angle changing, amplitude varies even at same rake angle, while γ0 0176。r1, and beck engage mentap is . Equipment and Instrument In experiment, choose CA6140 lathe (Shenyang First machine Tool Plant Made), electric eddycurrent sensor and riameter WFCⅢ . Electric eddycurrent sensor can be used in dynamic untouched survey, survey range is 0~1500μm, resolving power can reach 1μm。, corner radius rε is ~, cuting speed V is 20~30m, tool orthogonal clearanceα0 is 8176。, tool cutting edge anglekris 45176。,20176。,0176。, it is at V=160~180m/min. Moreover, quarding measures is presented on avoiding the biggest amplitude range so as to guarantee quanlity in precision machining at high speed. Keywords: machining,vibration,amplitude,tool rake angle In machining operation, tool character is not only decided by material, to a certain extent, it depends on resonable geometrical parameters. Tool rake angle is one of the specialest geometrical parameters, directly affects cutting zone deformation, chip morphology, chip break effection, cutting force, tool head strength and machined surface, quality it is researched by foreign scholars. Relative study points out[1]: tool rake angle also has considerable effect on machining vibration. But what is present situation about research of tool rake angle affecting machining vibration? What is the relation exsits between arke angle and amplitude of vibration at different cutting speed and what is the law ? These and others questions have not yet integrated coferences and exact data. For this reason, choose general machine tool, fairly used workpiece and tool material in experimental research on the relation between rake angle and amplitude of machining vibration at different cutting speed, and theory analysis of the result is producted, in an attempt to get relevent datas and corresponding material, and then perfect relevent theory of relation between rake angle and amplitude of vibration. This research provides theorecial basis for adopting resonable rake angle in practice, avoiding largest maplitude zone and guaranteeing quality in practice. 1 Experimental Material,Equipment and Instrument Workpiece Material Different metal materials have different physical mechanical characters. In this experiment, choose general used workpiece material 45 steel in cylindrical machining. Tool Material According to piece material, choose YT14 hard alloy tool t
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