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主轴(图1)内锥孔的加工,是我厂C 6136 A型车床生产中长期存在的问题。过去锥孔的精加工,一直是在M 131 W磨床上磨削的,采用的装夹方法是工件左端由磨床头架顶针顶住,并用可调的三点弹簧机构均匀地拉紧贴于顶针工作面,另一端由磨床中心架支托。虽然这种装夹加工方法较因简单经济,但存在下面缺陷:1.对磨床头架和工件预制精度要求高;2.用中心架支承工件外锥是线接触,按触面小,不稳定;3.每装夹一次工件,校表时间长,效率低;4.装夹基准不一致,累积误差大。由于上述种种原因,致
Spindle hole (Figure 1) taper hole machining, is my factory C 6136 A-type lathe production of long-standing problems. In the past, the machining of taper holes was always ground on the M 131 W grinding machine. The clamping method used was that the left end of the workpiece was supported by the head of the grinder headstock and the tension was uniformly applied to the thimble with an adjustable three-point spring mechanism Face, the other end by the grinder center frame support. Although this method of clamping processing more simple and economical, but the following shortcomings: 1. Grinding headstock and workpiece prefabrication accuracy requirements; 2. With the center frame support workpiece cone is the line contact, according to the contact surface is small, unstable ; 3 each clamping a workpiece, calibration time is long, low efficiency; 4 clamping inconsistencies, the cumulative error. Due to the various reasons mentioned above