论文部分内容阅读
目前,国内大中直径难加工材料的液压缸体精密孔加工,用镗铰工艺方法达到要求的尚属难题,欲达到以镗代磨的效果(Ra6.63μm以下),用普通硬质台金刀片由于硬度低,耐磨性差,加工时不能保证精密长深孔表面质量的一致性。因此,国内迄今精密大深孔加工技术几乎无一例外地采用粗镗、半精镗、精镗、珩磨(对液压缸采用滚压然后珩磨补救)等工艺,生产率低,产品成木高,废品率较高。近年来,随着新型复合陶瓷材料的出现,使现有的深孔加工技术进一步提高成为现实,即用简单的粗精镗铰加工工艺来代替冗长的原工艺。本文介绍采用新型复合陶瓷材料(AG2、AT6)对几种高强度钢大直径精密
At present, the domestic large and medium diameter difficult-to-machine materials, hydraulic cylinder precision hole machining, boring hinge technology to meet the requirements is still a problem, to achieve the effect of boring and grinding (Ra6.63μm below), with ordinary hard gold Due to the low hardness of the blade, wear resistance is poor, the processing can not guarantee the consistency of the surface quality of the long, deep precision hole. Therefore, the domestic so far large and deep precision machining of the deep hole almost without exception, the use of rough boring, semi-fine boring, fine boring, honing (hydraulic cylinder using honing and recovery) process, low productivity, product into wood, Higher rate. In recent years, with the emergence of new composite ceramic materials, the existing deep-hole processing technology to further increase the reality, that is, with a simple rough fine boring reaming process to replace the lengthy original process. This article describes the use of new composite ceramic materials (AG2, AT6) of several high-strength steel large diameter precision