目前,加工内圆光洁度要达到▽10以上,精度要控制在千分之五以内是比较困难的。过去,一般这种零件都采用手工研磨来加工,工效低,劳动强度大,质量也不稳定。我在五十年代制造的老设备上,不改变各部机构和传动比,仅采取了一些技术措施,就取得了磨削光洁度在▽12以上,精度在千分之二以内,直线度在千分之一点五以内的好效果,效率比手工研磨提高三倍以上。大大减轻了研磨工人的负担,保证了产品质量和生产任务的完 At present, the processing of the inner circle finish to reach ▽ 10 or more, the accuracy should be controlled within five thousandths is more difficult. In the past, this part of the general use of manual grinding to processing, work efficiency is low, labor-intensive, quality is not stable. I made the old equipment in the fifties, do not change the various agencies and transmission ratio, only to take some technical measures to obtain the grinding finish at ▽ 12 or more, the accuracy of less than two thousandths, straightness in the thousand One point within five good results, more than three times more efficient than manual grinding. Greatly reduce the burden on the grinding workers to ensure the completion of product quality and production tasks