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工件在车削加工时,由于机床性能、工件材料及刀具等因素的影响,易产生切削振动。切削振动会使工件的局部尺寸和工件的表面粗糙度发生变化,并缩短刀具的使用寿命,影响工件的加工质量。减小工件切削振动的方法主要有以下几种: (1)对机床的调整 机床各部应调整合适,紧定牢固。主轴的松紧应经常检查,并调整间隙,因它往往是振动产生的主要原因,并调整大、中、小滑板塞铁,使间隙小于0.04mm,且使移动平稳轻便。 (2)对车刀的要求 在保证强度的前提下,车刀前角应尽可能取大一些,加工细长轴时,应采用大的主偏角。 (3)对切削深度的要求 精车时,应根据机床
Workpiece in the turning process, due to machine performance, workpiece materials and tools and other factors, easy to produce cutting vibration. Cutting vibration will make the local size of the workpiece and the workpiece surface roughness changes, and shorten the tool life, affecting the quality of the workpiece processing. There are several ways to reduce the vibration of the workpiece cutting: (1) the adjustment of the machine tool All parts of the machine should be adjusted properly, firmly secured. The spindle tightness should always be checked and the gap adjusted because it is often the main cause of vibration and adjust the large, medium and small skateboard iron, so that the gap is less than 0.04mm, and to make moving smooth and light. (2) the requirements of the lathe Under the premise of ensuring the strength, lathe angle should be taken as large as possible, the processing of slender shaft, the main dip angle should be used. (3) on the depth of cut requirements of fine cars, should be based on machine tools