How to Reasonably Control the Cutting Quantity of CNC Lathe

For efficient metal cutting, the material being processed, cutting tools, and cutting conditions are the three major elements. These determine processing time, tool life, and processing quality. The economically effective processing method is inevitably the rational selection 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 the tool tip will rise, resulting in mechanical, chemical, and thermal wear. By increasing the cutting speed by 20%, the tool life will be reduced by half.

The relationship between feed conditions and wear behind the tool occurs within a very small range. But with a large feed rate, the cutting temperature rises, leading to significant wear afterwards. It has less impact on the tool than cutting speed. The influence of cutting depth on the tool is not as significant as that of cutting speed and feed rate, but in small cutting depths, the material being cut produces a hardened layer, which also affects the tool's lifespan.

Users need to choose the cutting speed to use based on the material being processed, hardness, cutting status, material type, feed rate, cutting depth, etc. The selection of the most suitable processing conditions is based on these factors. Regular and stable wear is the ideal condition for achieving lifespan. However, in practical operations, the selection of tool life is related to tool wear, changes in the processed size, surface quality, cutting noise, processing heat, and so on. When determining the processing conditions, it is necessary to conduct research based on the actual situation. For difficult to machine materials such as stainless steel and heat-resistant alloys, coolants or rigid cutting edges can be used.