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我厂生产的偏心轴销杆(如图1所示),材料一般为15钢或20Cr钢,经渗碳淬火,表面的硬度为HRC56～62,工件的两轴线偏心距在0.1～2mm之间,其尺寸公差为±0.10mm。根据本厂磨削工序的安排,此类零件的大端外径(其长度一般为零件全长的4/5以上)采用无心磨床贯穿式磨削,然后在专用设备上磨削小端外径。由于这类零件精度要求高,品种较多,偏心距各不相同,批量也较大,故需配制各种规格的偏心套筒,这样,操作难度和辅助工作量都较大,产品质量不稳定,生产效率也较低。
I produced eccentric shaft pin (shown in Figure 1), the material is generally 15 steel or 20Cr steel, carburized and hardened, the surface hardness of HRC56 ~ 62, the workpiece eccentric axis of the two axes between 0.1 ~ 2mm , The size tolerance is ± 0.10mm. According to the factory grinding process arrangements, such parts of the large end diameter (the length of the general part of the total length of 4/5 or more) by centerless grinder through grinding, and then grinding on the special equipment small end diameter . Because of the high precision of such parts, more variety, eccentricity vary, the batch is larger, so the need to prepare a variety of eccentric sleeve, so that the difficulty of operation and auxiliary workload are large, product quality is not stable , Production efficiency is lower.