论文部分内容阅读
很多大型铸件,如发动机的气缸盖、气缸顶、进排气管等零件的结合面,其表面光洁度常要求达到▽6～▽7。过去我们采用精铣工艺时,用楔块压紧式焊接刀杆的端铣刀盘铣削工件,生产效率很低,光洁度达不到▽5;另用一种整体刀垫的机夹可转位端铣刀盘,又感到调整刀刃的端面跳动和径向跳动困难,而且刀垫是浮动的,即使调整好,光洁度仍达不到▽5;最后用端跳和径跳可以分开调整的双刀垫机夹可转位端铣刀盘,试铣时可达▽5,但要达到▽6～▽7,仍然不行。为使产品光洁度提高到▽6以上,我们在改造旧刀盘结构和选用合适的几何参数等方面,获得一定成效,实现了以铣代磨,现介绍如下。
Many large castings, such as engine cylinder head, cylinder head, into the exhaust pipe and other parts of the combination, the surface finish often required to achieve ▽ 6 ~ ▽ 7. In the past when we use the fine milling process, the use of wedge-type welding rod end milling cutter milling the workpiece, the production efficiency is very low, finish less than ▽ 5; another with a whole machine folder can be indexable cutter End milling cutter plate, but also feel the edge of the blade edge and radial runout adjustment difficulties, and the pad is floating, even if the adjustment is good, the finish is still not up to ▽ 5; Finally, the end of the jump and jump can be adjusted separately Pad machine can be indexable end milling cutter, milling up to ▽ 5, but to reach ▽ 6 ~ ▽ 7, still not. In order to improve the product finish to ▽ 6 or more, we have achieved some results in the transformation of the structure of the old cutter and the selection of the appropriate geometric parameters, to achieve the milling instead of grinding, are introduced below.