论文部分内容阅读
缸套粗镗镗偏的问题普遍在,由于它是机加工的第一道工序（或查调二工序）,镗偏造成了缸套毛坯内外加工量的不均匀性,故易造成渣眼、砂眼等废品。但粗车外国以后就很难看出偏来了,最后分析废品原因时,将渣眼、砂眼造成的废品误认为全是铸造造成的,因此没有对粗镗夹具引起足够重视,所以镗偏问题一直没有得到彻底解决。 我厂多年来严重存在镗偏问题,86年下半年我们对这一问题作了第道,对夹具进行了改进,设计研制了粗镗弹性定位夹具,收到了良好的效果。 一、粗镗夹具的几种形式 缸套机加工,有的先粗镗,有的先切头,先切头是有利于粗镗的。粗镗夹具主要有以下三种形式:
Cylinder liner rough boring partial deviation of the problem, because it is the first process of machining (or the investigation of the second process), boring offset into the liner outside the rough processing of non-uniformity, it is easy to cause slag eyes, Trachoma and other waste. However, after the rough rough foreign countries it is difficult to see the deviation, the final analysis of the causes of waste, the slag eyes, trachoma caused by the waste mistakenly believe that all caused by casting, it did not cause enough attention to the rough boring fixture, so the boring partial problem has been Not completely resolved. In the second half of 1986, we made the first road to this issue and made improvements to the fixtures. We designed and developed the rough positioning fixtures for rough boring and received good results. First, rough boring jig several forms of cylinder machining, and some rough boring, and some cut first, the first cut is conducive to rough boring. Rough boring fixture has the following three forms: