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1 生产工序中经常出现的质量问题及改进措施 （1）车工工序 1）加工接头零件时常会发生退刀槽、清根槽超宽。其主要原因是选用的切刀宽度超差，或套外螺纹时板牙的倒角过大。改进措施：应选用符合图样要求的刀具。 2）圆弧密封面、锥度密封面的锥度与表面粗糙度超差。其主要
1 Quality problems and improvement measures that often occur in the production process (1) Turning process 1) When the joint parts are processed, the undercut groove and clear root groove are often generated. The main reason is that the width of the cutter is selected to be excessive, or the chamfer of the die is too large when the outer thread is used. Improvement measures: The tool that meets the drawing requirements should be selected. 2) The taper and surface roughness of the arc sealing surface and the taper sealing surface are very poor. Its main