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我厂在CA7620液压车床上车削圆锥滚子轴承的内圈滚道,过去的工艺是前刀架车刀车削锥面AB,后刀架车刀粗挖滚道,然后在另一台车床上精挖滚道,即在两台床上完成(见图1a)。由于祖挖滚道吃刀量大,成形车刀磨损量大,切削温度过高,刀具寿命很低。在批林批孔运动中,我厂车工车间工人师傅狠批了“上智下愚”的反动谬论,自己动手搞革新。在短时间内搞成一套液压仿形装置。采用这套装置后,前刀一次粗车出滚道和内外径ABCD,后刀架成形车刀精挖滚道(见图1b)。这样原来要在两台车床加工,现在只需一台车床,节省一道工序。由于精挖滚道吃刀量小,刀具寿命提高四倍以上,节省了磨刀时间,工效提高一倍以上。而且车工留量易于保证,加工面光洁度比原先有所提高。
I plant CA7620 hydraulic lathe turning tapered roller bearing inner raceway, the past process is the front knife turning lathe cone AB, after the turret lathe roughing raceway, and then fine on the other lathe Excavation track, that is completed in two beds (see Figure 1a). As a result of a large number of knife-cut to eat a large knife, forming a large amount of tool wear, cutting temperature is too high, the tool life is very low. In the pro-Lin hole movement, I workshop car mechanic workshop workers criticized the “wisdom on the stupid” reactionary fallacy, do it yourself. In a short period of time into a set of hydraulic profiling device. After using this device, the razor rough out a raceway and inner and outer diameter ABCD, after the knife forming knife precision roller raceway (see Figure 1b). This turned out to be in the two lathe processing, now only a lathe, save a process. As a result of small hob to eat a small amount of knife, tool life increased by more than four times, saving the sharpening time, work efficiency more than doubled. And easy to guarantee the amount of vehicle reserves, processing surface finish than the original has been improved.