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我公司金工车间经常加工薄壁类套件,由于此类套件自身的特点所限,长出现圆度超差现象。如加工的导向套在与缸体装配时,常出现导向套三点及缸体外周磨损现象。分析原因是导向套出现正三棱变形所致,而正三棱变形产生的圆度误差是变形互补关系,用外径千分尺测外圆是测不出这种误差的,但使用外径千分尺测量工件,又是我公司的主要测量方法,这样就可能将某些不合格
My company’s metalworking workshop often thin-walled class kit, due to the characteristics of such packages are limited, there round the phenomenon of excessive roundness. Such as the processing of guide sleeve assembly with the cylinder, the guide sleeve often appear three points and the outer cylinder wear phenomenon. Analysis of the reasons is that the guide sleeve is three-dimensional deformation caused by the positive and three-dimensional deformation of the roundness error is the complementary relationship between the deformation, measured with an outer diameter micrometer is not measured outside the circle of such errors, but the use of micrometer diameter measurement of the workpiece, It is my company’s main measurement method, so that some may fail