多年来,我厂精密阀孔的加工,一直采用国外引进的工艺,工序多、流程长、设备精、投资大、效率低、废品多,严重影响生产发展。在批林批孔运动中,我厂广大工人、干部和技术人员在厂党委领导下,以阶级斗争为纲,破除崇洋思想,坚决贯彻执行“独立自主,自力更生”的方针,认真开展科学试验,试验成功刚性镗铰刀加工精密阀孔的新工艺,该工艺推广后,阀产量成倍增长,有力地促进了我厂生产的发展。这一工艺的优点主要是:不受毛坯余量分布不均匀的影响(余量达七毫米或更多),可一次加工出一级精度的阀孔,免去了原珩磨工序;孔的宏观几何精度可显著地高于机床的几何精度;刚性镗铰刀的寿命长,最高一把刀可 Over the years, the machining of precision valve holes in our factory has been adopting the technology imported from abroad, with many processes, long process, fine equipment, large investment, low efficiency and many wastes, which seriously affected the production development. Under the pro-Lin campaign, the vast majority of workers, cadres and technical personnel of our factory, under the leadership of the factory Party committees, took the class struggle as the key link, broke away from the thought of worshiping the ocean and resolutely implemented the principle of “independence, self-reliance and self-reliance” and carried out scientific experiments and experiments Successful rigid boring reamer machining precision valve hole of the new technology, the promotion of the process, valve production doubled, effectively promoted the development of our plant production. The major advantages of this process are that the first-order precision valve hole can be machined out of the original honing process without being affected by the uneven distribution of the stock allowance (with a margin of seven millimeters or more); the macroscopic Geometrical precision can be significantly higher than the geometric accuracy of the machine tool; rigid boring reamer long life, the highest knife