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在拖拉机制造中,需要应用各种花键塞规:如渐开线、小尖齿形等。其光洁度要求一般为(?)9～(?)10,尺寸和齿形公差要求一般为0.005～0.01毫米。但这种齿形的最后精加工只能采用磨削、无法研磨。我厂磨削这种产品是在M8612花键磨床上。该磨床的主轴虽然装在四个C级或D级高精度滚动轴承上,但磨削光洁度一般亦只能达到(?)8,满足不了产品的质量要求。为了保持磨削时得到更好的光洁度和精度,机床主轴不敢吃大刀,就这样轴承寿命一般只能维持到3～4个月就要换新的。同时由于高精度滚动轴承较缺,每年又要拆换轴承数次,这样就给我厂生产和设备维修造成极大困难。通过无产阶级文化大革命和批林批孔运动,我国工业战线上广大革命职工狠批了“洋奴哲学”、“爬行主义”,发扬了敢想、敢闯的革命精神,以大庆为榜样,自力更生,
In the tractor manufacturing, the need to use a variety of spline plug gauge: such as involute, small cusp-shaped and so on. Its finish is generally (?) 9 ~ (?) 10, size and tooth tolerance requirements are generally 0.005 to 0.01 mm. However, the final finish of this tooth profile can only be ground and not ground. I plant grinding this product is M8612 spline grinder. Although the main shaft of the grinding machine is mounted on four C-type or D-class high-precision rolling bearings, the grinding finish can only reach (?) 8, which can not meet the quality requirements of the product. In order to maintain a better finish and precision grinding, the spindle can not eat bold knife, so the bearing life can only be maintained to 3 to 4 months to be replaced. At the same time due to the lack of high-precision rolling bearings, but also to replace the bearing several times each year, thus giving me plant production and equipment maintenance caused great difficulties. Through the Great Proletarian Cultural Revolution and the campaign to criticize the proletariat and the proletariat, the vast majority of revolutionary workers on the industrial front of our country have etiquettely criticized the “slave-slave philosophy” and “repressionism” and carried forward the revolutionary spirit of daring to think and dare to break through. Taking Daqing as an example,