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目前,我国还没有适合工厂使用的全面、方便、实用的金属切削数据手册。生产中采用的切削参数极为混乱,远未达到经济合理的水平。从调研国内四个地区某同类产品生产线上若干典型车削工序的切削用量和刀具耐用度的情况来看,由于各厂使用刀具差别太大,切削用量和刀具耐用度相差悬殊,同样是粗车相同内孔工序,其刀具耐用度相差竟高达14倍,金属切除量(以单位时间内切除金属的体积来表示)相差3倍。刀具耐用度特别低的工序大多数由于刀具几何参数不合理,切削速度偏高所致。车削石油机械常用合金钢等材料的大多数工序的刀具耐用度远离经济
At present, there is no comprehensive, convenient and practical metal cutting data manual suitable for the factory in our country. The cutting parameters used in production are extremely chaotic, far from being economically sound. From the investigation of a certain type of domestic product production line in a number of similar types of cutting operations and tool life of the case, due to the use of different tools in the plant too much difference between the cutting and cutting tool durability, the same is the same rough car The hole process, the difference between the tool as high as 14 times the same, the amount of metal removal (in unit time to excise the volume of metal to represent) a difference of 3 times. Mostly due to the tool geometry is unreasonable, the cutting speed is too high. Turning the majority of the process of turning steel machinery commonly used alloy steel tool durability away from the economy