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大连工矿车辆厂金工装配车间工人胡传栋同志,在技术革新运动中,通过几次试验,改进一种车床上钻孔用的快速工具,使生产效率提高3～4倍。工具的结构如附图所示。1是车床上的三爪卡盘。2是定心胎,内孔带有35°的斜面。3是工件。4是定心套,内孔同样带有35°的斜面,使工件在高转速下自动定心。5是滚珠轴承,装在外壳6上;滚珠轴承可根据工件
Comrade Hu Chuan-dong, a worker in the metalworking assembly workshop of Dalian Industrial and Mining Vehicle Works, improved a production efficiency by 3 to 4 times through several tests in his technical innovation campaign to improve a quick tool for drilling holes in a lathe. The structure of the tool is shown in the attached figure. 1 is the three-jaw chuck on the lathe. 2 is a centering tire with a 35 ° bevel in the bore. 3 is the workpiece. 4 is the centering sleeve, the hole also has a 35 ° bevel, so that the workpiece automatically centering at high speed. 5 is a ball bearing, mounted on the housing 6; ball bearings can be based on the workpiece