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过去精加工减速机箱体的孔,多半采用高速钢镗刀,不但切削用量低,寿命短,而且质量往往还不能保证。后来我们改用硬质合金刀具,走刀量达到1.5～2毫米/转;这样的走刀量,在精加工中仍然是低的。为了在保证质量的基础上更进一步提高生产效率,镗工安邦绂、郭忠仁等同志,从刀具几何角度着手改进;同时加长了刀刃的长度,也进一步地加强了刀具的刚性。改进后的刀具,走刀量达4毫米/转,从而使生产率提高1倍。
In the past, the holes of finishing gear box body were mostly made of high-speed steel boring tools, which not only reduced the cutting load but also shorted the service life, but the quality was often not guaranteed. Later, we use carbide cutting tools, take the amount of knife reached 1.5 ~ 2 mm / rev; this amount of walking, finishing is still low. In order to further improve the production efficiency on the basis of ensuring the quality, boring workers such as An Bang, Guo Zhongren and other commenters proceed from the geometric point of view of the tool to improve; also lengthened the length of the blade, but also to further strengthen the rigidity of the tool. Improved tool, take the amount of 4 mm / rev, so that the productivity doubled.