CNC lathe is a high-precision, high-efficiency automated machine tool. Using CNC lathe can improve processing efficiency and create more value. The emergence of CNC lathe has enabled enterprises to get rid of the backward processing technology. The processing technology of CNC lathe is similar to that of ordinary lathe, but because CNC lathe is clamped once and continuously and automatically completes all turning processes, the following aspects should be noted.
Reasonable selection of CNC lathe cutting amount
For efficient metal cutting, the processed material, cutting tool and cutting conditions are the three major factors. These determine the processing time, tool life and processing quality. An economical and effective processing method 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 the tool tip will rise, and mechanical, chemical and thermal wear will occur. If the cutting speed increases by 20%, the tool life will be reduced by 1/2.
The relationship between feed conditions and tool back wear occurs within a very small range. However, if the feed rate is large, the cutting temperature rises, and the back wear is large. It has less impact on the tool than cutting speed. Although the impact of cutting depth on the tool is not as great as cutting speed and feed rate, when cutting at a small cutting depth, the cut material will produce a hardened layer, which will also affect the life of the tool.
Users should choose the cutting speed to be used according to the material, hardness, cutting state, material type, feed rate, cutting depth, etc. to be processed.
The selection of the most suitable processing conditions is based on these factors. Regular and stable wear to reach the life is the ideal condition.
However, in actual operation, the selection of tool life is related to tool wear, change in the size of the processed, surface quality, cutting noise, processing heat, etc. When determining the processing conditions, it is necessary to study according to the actual situation. For difficult-to-process materials such as stainless steel and heat-resistant alloys, coolants can be used or blades with good rigidity can be selected.
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Reasonable selection of CNC lathe tools
1.When rough turning, choose tools with high strength and good durability to meet the requirements of large back cutting amount and large feed rate during rough turning.
2.When fine turning, choose tools with high precision and good durability to ensure the requirements of processing accuracy.
3.In order to reduce tool change time and facilitate tool alignment, machine-clamped knives and machine-clamped blades should be used as much as possible.
Reasonable selection of fixtures
1.Use universal fixtures to clamp workpieces as much as possible, and avoid using special fixtures;
2.The positioning datum of parts overlaps to reduce positioning errors.
Determine the processing route of CNC lathes
The processing route refers to the movement trajectory and direction of the tool relative to the part during the processing of CNC machine tools.
1.It should be able to ensure the processing accuracy and surface roughness requirements;
2.The processing route should be shortened as much as possible to reduce the tool idle travel time.
The relationship between the processing route and the processing allowance
At present, under the condition that CNC lathes have not yet been widely used, the excess allowance on the blank, especially the allowance containing forging and casting hard skin layers, should generally be arranged on ordinary lathes for processing. If CNC lathes must be used for processing, attention should be paid to the flexible arrangement of the program.
Key points for fixture installation
Currently, the connection between the hydraulic chuck and the hydraulic clamping cylinder is achieved by a pull rod. The key points for clamping the hydraulic chuck are as follows: First, use a wrench to remove the nut on the hydraulic cylinder, remove the pull tube, and pull it out from the rear end of the spindle, then use a wrench to remove the chuck fixing screws to remove the chuck.
As a supplier with more than 20 years of experience in machine tool production, Shanghai ANTS can quickly match you with the right machine after understanding your specific needs. If you need a CNC lathe machine, you can refer to our website: CNC LATHE
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