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我厂优秀车工、上海市劳模盛利同志,根据费奥多罗夫同志所介绍的刀具,把平常使用的外圆车刀磨成阶台式车刀,使切削速度提高到550公尺/分。现在把这种车刀的构造介绍于下,以供参考:阶台式车刀是在主偏角(?)=45°的主刀刃的后边(如附图),磨出一条阶台(3×1公厘,R≤1公厘)。这样,当刀头上有了阶台以后,就阻止了连续切屑的产生,切下来的切屑便成了碎屑。同时,根据强力切削的要求,在刀头上磨有1.5公厘宽的修光刃,并在刀刃上磨有-5°×0.1的倒棱。这样,不但能精车外圆和平面,而且还可以在大走刀量的情形下,提高工件表面的光泽度。因此大
I plant excellent turner, Shanghai Sheng Sheng Lam model comrades, according to Fedorov introduced the knife, the commonly used cylindrical lathe knife step into the desktop, the cutting speed increased to 550 m / min. Now introduce the structure of this lathe tool for reference: The lathe tool is on the back of the main cutting edge (?) = 45 ° 1 mm, R ≤ 1 mm). In this way, when there is a step on the bit, it prevents the continuous chip from being generated, and the cut chip becomes crumb. At the same time, according to the requirements of the powerful cutting, grinding head 1.5 mm wide wiper, and the blade edge grinding -5 ° × 0.1 chamfering. In this way, not only to fine car cylindrical and flat, but also in the case of a large amount of walking to improve the surface gloss of the workpiece. So big