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一、前言如何采用镗加工方法使铸件的大跨距内孔达到高精度和较高的表面光洁度▽7是我厂长期以来需要解决的一个技术难题。过去,我们镗削这类内孔,经常遇到的情况是表面光洁度达到规定要求而精度不合格,或精度合格但表面光洁度不符合规定要求。为了达到规定的加工要求,我们在工艺上采用精镗加研磨的加工方法来解决,但是研磨加工的劳动强度大、效率低,同时要求操作工人的技术等级较高。针对上述情况,为了省去研磨工序,提高加
First, the foreword How to use the boring method to make the large span of the casting hole to achieve high precision and high surface finish ▽ 7 is our factory has long been a technical problem to be solved. In the past, we bore such bore, often encountered in the surface finish meet the requirements of the accuracy of unqualified, or precision but the surface finish does not meet the requirements. In order to meet the specified processing requirements, we use fine boring and grinding processing methods to solve the problem. However, the grinding process is labor-intensive and inefficient, and the worker’s technical level is required to be higher. In view of the above situation, in order to save the grinding process, increase Canada