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量规控制半自动内圆磨床广泛应用于轴承零件的磨削加工。但目前生产上达不到严格的内孔技术要求,废品率和返修率很高。尤其是3225Б半自动内圆磨床,由于胎具一次安装中磨削二个工件,外端工件尺寸超出了量规控制范围,加工精度更加不易得到保证。本文分析了量规半自动循环工艺过程的尺寸链及加工误差来源;按照综合磨削试验结果所进行的点图分析及相关分析,找到了影响里外端尺寸精度的主要因素;就找到的原因进行单项试验并采取措施以后,加工精度有了显著提高,基本上保证了生产单位的正常生产。证明找到主要误差来源是正确的,采取的措施是有效的。
Gauge control semi-automatic internal grinder widely used in the grinding of bearing parts. However, the current production does not meet the stringent requirements of the technical requirements of the hole, rejection and repair rate is high. Especially 3225Б semi-automatic internal grinder, grinding a workpiece due to the installation of two parts, the size of the outer end of the workpiece beyond the scope of control, processing more difficult to be guaranteed accuracy. In this paper, we analyze the size chain and the source of machining error in the semi-automatic cycle process of measuring gauges. According to the point diagram analysis and correlation analysis of the comprehensive grinding test results, the main factors affecting the dimensional accuracy of the inner and outer ends are found. After testing and taking measures, processing precision has been significantly improved, basically ensuring the normal production of production units. Prove that the source of the main error is found to be correct and that the measures taken are effective.