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How to Improve CNC Machining Efficiency of Precision Parts?

How to Improve CNC Machining Efficiency of Precision Parts?

2022-07-12 13:48:03

In the process of CNC machining of non-standard parts, there will be some common problems, such as accelerated tool wear, poor processing appearance integrity, chip removal difficulties, and so on. It seriously affects the quality, production cycle, and processing cost of precision parts made of this kind of material.

 

CNC MACHINING

 

CNC machining of non-standard parts requires super lubricated machining appearance and high machining accuracy, which requires a high standard service life of tools. Whether the tool is worn depends on whether the quality of the machined surface is out of tolerance. The standard life of diamond tools is very high, and the tool wear is very slow during high-speed cutting. Therefore, the cutting speed during ultra-precision cutting is not limited by the tool life, which is different from the general cutting law.

 

The cutting speed selected in the CNC machining practice of non-standard parts is often selected according to the dynamic characteristics of the ultra-precision machine tool and cutting system used, that is, the speed Z with small vibration. Because the surface roughness Z is small and the machining quality Z is high at this speed, obtaining a high-quality non-standard CNC machining surface is the primary problem in the machining of non-standard equipment parts. Ultra-precision machine tools with good application quality, especially good dynamic characteristics and low vibration can use high cutting speed and increase processing power.

 

The selection of CNC machining parameters for non-standard parts mainly includes tool viewpoint, cutting speed and cutting depth Degree and feed speed, etc. From experience, we know that when processing plastic materials, it is assumed to choose a tool with a large rake angle, which will reduce the cutting force The formation of chip buildup is useful. The tool rake angle increases When it is large, the cutting force is reduced, the cutting deformation is small, the contact length between the tool and the chip is shortened, and the formation of chip blocks is reduced.

 

What dangers should we pay attention to in CNC precision machining?

 

First, the probability of danger of transmission equipment in actual operation is relatively high. The transmission of machine tools is generally composed of gear parts, transmission chains, and transmission belts. If safety is not fully considered when planning these parts If there is no protective layer planned, the rotating parts will be exposed. Then it is likely that the workers' hands or clothes will be screwed into the equipment and then injured.

 

Second, the pressure parts of pressure machinery may cause danger. Generally speaking, the common ones are press, crusher, molding machine, shear machine, etc. All belong to pressure machinery because most of these devices need manual operation. However, personnel operation cannot avoid personnel fatigue Human error caused by labor or emotional fluctuation is also easy to cause injury accidents.

 

Third, the danger from machine tools is also dangerous. Because most machine tools are high-speed cutting machines, which are very dangerous. Knife, splash, collision, and other factors caused by the improper direction of the operator's station may cause personal injury accidents.

 

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