我厂加工如图1的两半合轴承,是将铸好的整体轴承,先在车床上车准各部尺寸,再在铣床上用虎钳卡住铣成两半。铣削工序的效率很低,要14分钟铣一个。后来改用了如图2的夹具,只要5分钟就可加工好,提高效率约2倍。图2中,1是心轴,左端用分度盘夹住,右端用顶尖顶紧。心轴1上开有两条宽4公厘、高5公厘的引导槽。心轴外圆要达到▽▽▽7的表面光泽度,以免 I plant the processing of two half-bearings shown in Figure 1, is to cast a good overall bearing, the first vehicle in the lathe quasi-ministries size, and then milled in the milling machine with a vice milled in half. Milling process is very inefficient, to be a 14-minute milling. Later switched to the fixture in Figure 2, as long as 5 minutes can be processed, improve efficiency about 2 times. In Figure 2, 1 is the mandrel, the left end of the index plate with the right end of the top tight. The mandrel 1 has two guide grooves 4 mm wide and 5 mm high. Spindle outer circumference to reach ▽ ▽ ▽ surface roughness of 7, so as not to