NC lathe reasonable selection of cutting parameters!
NC lathe is a kind of high-precision and high-efficiency automatic machine tool. The use of NC lathe can improve the processing efficiency and create more value. The appearance of NC lathe makes the enterprise get rid of the backward machining technology, and the NC lathe processing process is similar to that of ordinary lathe, but the NC lathe is a one-time clamping, continuous automatic machining completes all turning process, so NC lathe processing reasonable selection of cutting usage skill should pay attention to the following aspects.
For efficient metal cutting, machined materials, cutting tools and cutting conditions are three major elements. These determine the machining time, tool life and machining quality. The economical and effective machining mode must be a reasonable choice of cutting conditions. The three elements of cutting conditions: cutting speed, feed rate and cutting depth directly cause tool damage. With the increase of cutting speed, the temperature of tool tip will rise, which will produce mechanical, chemical and thermal wear. If the cutting speed is increased by 20%, the tool life will be reduced by 1%.
The relationship between feed conditions and tool wear occurs in a very small range. However, the feed rate is large, the cutting temperature rises, and the wear behind it is large. It has less effect on the cutting tool than the cutting speed. Although the influence of cutting depth on the cutting tool is not as large as the cutting speed and feed, the hardened layer produced by the cutting material will also affect the life of the tool when the cutting material is deeply cut. Customers should choose the cutting speed according to the machined material, hardness, cutting state, material type, feed quantity, cutting depth and so on. The selection of more suitable processing conditions is based on these factors. Regular, stable wear and tear to reach life is the ideal condition. However, in practice, the choice of tool life is related to tool wear, machining size change, surface quality, cutting noise, machining heat and so on. In determining the processing conditions, it is necessary to study according to the actual situation. For hard-to-process materials such as stainless steel and heat-resistant alloys, coolant or rigid blade can be used.