外文翻譯---刀具前角對(duì)切削加工振動(dòng)的影響-其他專業(yè)-展示頁
2025-01-31 09:22本頁面
【正文】 ip is choosen and drill weld it on to 45 steel tool. Precision and utraprecision machining are strict on quality of spare surface, while vibraltion affects is mostly. Therefore, the geometrical parameters and corresponding machining quality of six tools are selected in this experiment rake angle γ0 is made:20176。, the biggest unidirection amplitude occurs at V=50~70m/min。Effect of Tool Rake Angle on Machining Vibration Abstract： Effect of tool rake angle on cutting vibration by experiments are done at different cutting speed in machining operation, and corresponding theoretical analysis is conducted. Result indicates, amplitude of machining vibration gradually decreases with tool rake angle increasing。 while rake angle γ00176。 While γ0≥0176。,10176。,10176。and 30176。, tool minor cutting edge angle kr′ is 15176。, tool cutting edge inclination λ0 is 0176。min1, feed per revolution Measure range of WFCⅢ is ~300μm (Unidirection vibration value), this viameter fairly resists interferance, measured data has quite accurate. 2 Experiment Method and Measured Data Considering up limit of vibration in machining opration, clamp wordpiece on lathe CA6140 with cantilever of threejawchuck. Experiment test device sketch map in indicates: Distance from sensor untouched testing point ( its surface roughnessRa=)to end surface of chuck is 200mm. Sensor is fixed on lathe tail stock, the measured amplitude (only measure the sensitive direction of work piece in machining) is an absolute value of piece relative to lathe guide. Distance between cutting part and outter end of chuck is 50~190mm. Relation between rake angle and amplitute of vibration measured in machining operation see table 1. With measured data in table 1, relation curve of tool rake angle and cutting speed affecting amplitute of vibration is given in . indicates: The measured amplitudes of vibration differently correspond to dif ferent tool rake angle。, the biggest amplitute occurs at V=50~70m/min。, it is at V=160180m/min. To each tool, three repeat experiments are done to verify the reliability of above testing data, its trend of vibration is roughly the same, only the amplitude of vibration changes a little all (relative error less 5%). 3 Analysis of Experiment Result On the base of measured data and experiment curve in , analysis is given as fellows: Relation between Rake Angle and Biggest Amplitude In pliance wity table 1, putting data
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