CNC lathe is a kind of high-precision and high-efficiency automatic machine tool. The use of CNC lathe can improve processing efficiency and create more value. The emergence of CNC lathe enables enterprises to get rid of the backward processing technology. The processing technology of the lathe is similar, but because the CNC lathe is a one-time clamping and continuous automatic processing to complete all the turning processes, the following aspects should be paid attention to.
Reasonable choice of cutting amount
For high-efficiency metal cutting processing, the material to be processed, cutting tools, and cutting conditions are the three major elements. These determine the processing time, tool life and processing quality. The economical and effective machining method must be a reasonable choice of cutting conditions.
The three elements of cutting conditions: cutting speed, feed rate and depth of cut directly cause tool damage. With the increase in 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 the feed condition and the wear on the back of the tool occurs in a very small range. However, the feed rate is large, the cutting temperature rises, and the back wear is large. It has less influence on the tool than cutting speed. Although the influence of cutting depth on the tool is not as large as the cutting speed and feed rate, when cutting at a small depth of cut, the material being cut will produce a hardened layer, which will also affect the life of the tool.
The user should select the cutting speed to be used according to the processed material, 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, stable wear and longevity are the ideal conditions.
However, in actual operations, the choice of tool life is related to tool wear, dimensional changes to be processed, surface quality, cutting noise, and processing heat. When determining the processing conditions, it is necessary to conduct research according to the actual situation. For difficult-to-process materials such as stainless steel and heat-resistant alloys, coolants or blades with good rigidity can be used.
Choose a tool reasonably
1. When rough turning, choose a tool with high strength and good durability to meet the requirements of large back-grabbing and large feed when rough turning.
2. When finishing turning, choose high-precision and durable tools to ensure the requirements of machining accuracy.
3. In order to reduce the time for tool change and facilitate tool setting, machine-clamped knives and machine-clamped blades should be used as much as possible.