论文部分内容阅读
在组合机床上镗削几层同一轴线孔系时,若孔系同轴度要求高,则采用一根镗杆上装儿把镗刀同时镗削一组孔。如果同一轴线孔系的直径相同,在夹具上应设置使工件对镗杆水平偏移或升降一个让刀量的机构,即让刀机构,以便镗刀通过。下面介绍两种让刀机构。 1.采用浮动支承的让刀机构 图1是精镗S195柴油机机体的让刀机构。机体从右边推入夹具。此时,在机体的前后是镗模支架。机体的底面A面是主定面,由两条定位条4支承;机体的后面由侧定位板6支承,机体的B面由定位柱3支承。机体进入夹具后,首先和滑柱10接触。此时,机体各孔中心在相应镗杆中心的右侧,二者之间有一个
Boring in the combined machine several layers of the same axis hole system, if the hole system of high concentricity, the use of a boring bar on the boring tool to boring a group of boring holes at the same time. If the same axis hole system of the same diameter, the fixture should be set so that the workpiece on the horizontal deviation of the boring bar or lift a knife to the amount of institutions, let the knife body, so boring knife through. Here are two ways to let the knife body. 1. Floating support to let knife body Figure 1 is fine boring S195 Diesel engine body to let the knife. Body pushed into the fixture from the right. At this point, before and after the body is boring mold bracket. The bottom surface A of the body is the main surface, which is supported by two locating strips 4; the rear of the body is supported by the side locating plate 6, and the B surface of the body is supported by the locating post 3. Body into the fixture, the first contact with the spool 10. At this point, the center of each hole in the body in the center of the corresponding boring bar to the right, there is one between the two