What are the environmental and equipment requirements for precision machining hardware?

2023-07-25

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At present, the precision of precision hardware processing parts has reached the micron level, which not only requires precision processing equipment, tools, precision measuring instruments and high-tech workers, but also a good processing environment is also the main factor to ensure the precision of precision hardware processing. If there is too much dust, the surface of the workpiece will be scratched, and its surface quality will be affected, so we need to strengthen the purification in the workshop.

In the process of precision machining, the process system is affected by internal heat sources such as cutting heat and friction heat, and at the same time exchanges heat with the external environment. Therefore, the external ambient temperature has become an important factor affecting the processing accuracy. Due to the different heat source strength and distribution position, the temperature rise of each part of the machine tool during the processing process is different, and the thermal expansion coefficient of different materials is different, resulting in different deformation amounts of the machine tool bed, spindle, grating ruler and tool holder and other components, thereby destroying the original geometric accuracy of the machine tool. Placing the processing equipment at a stable ambient temperature can reduce the temperature difference between the components of the machine tool, and thus reduce the difference in deformation.
In summary, excessive changes in ambient temperature have also become the main source of errors in the processing of precision hardware parts, and excessive temperature will cause thermal deformation of machine tools, tools and measuring devices, resulting in processing errors and measurement errors. In the cutting of precision parts, vibration has a great impact on machining accuracy and surface roughness, and vibration mainly includes vibration caused by natural external forces, traffic vibration, vibration when people walk and vibration caused by machine tools. Based on the above reasons, when we process precision hardware parts, the working environment should be purified, vibration-proof and constant temperature.

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