Importance of CNC lathe processing on the selection of cutting amount

Author: MULAN - Plastic Molding Manufacturer

For high-efficiency CNC lathe processing metal cutting, the three major elements are the processed material, cutting tools, and cutting conditions. These determine machining time, tool life and machining quality. An economical and effective processing method must be a reasonable choice of cutting conditions.

The three elements of CNC lathe machining cutting conditions: cutting speed, feed rate and depth of cut directly cause damage to the tool. With the increase of cutting speed, the temperature of the tool tip will rise, which will cause mechanical, chemical and thermal wear. Cutting speed increased by 20%, tool life will be reduced by 1/2.

The relationship between feed conditions and tool back wear occurs in a very small range. However, the feed rate is large, the cutting temperature rises, and the wear behind is large. It has less effect on the tool than cutting speed.

Although the effect of depth of cut on the tool is not as large as the cutting speed and feed rate, when cutting with a small depth of cut, the material to be cut will produce a hardened layer, which will also affect the life of the tool. The user should choose the cutting speed to use according to the material to be processed, hardness, cutting state, material type, feed rate, depth of cut, etc. The selection of the most suitable processing conditions is selected on the basis of these factors.

Regular, steady wear to the end of life is the ideal condition. However, in actual operation, the choice of tool life is related to tool wear, size change, surface quality, cutting noise, processing heat, etc. When determining the processing conditions, it is necessary to conduct research according to the actual situation.

For difficult-to-machine materials such as stainless steel and heat-resistant alloys, coolant can be used or a rigid cutting edge can be used.