CNC vertical lathe is a high-efficiency, highly automated, and high-precision processing equipment. Its processing efficiency and processing quality largely depend on its degree of thermal deformation. Thermal deformation is an inevitable problem in CNC vertical lathe processing. It is mainly manifested as the expansion and contraction of materials, leading to problems such as dimensional deviation of the workpiece and increased surface roughness. How to reduce the impact of thermal deformation of CNC vertical lathes and improve processing efficiency and processing quality is an issue we need to pay attention to.
The following are some methods and techniques to reduce the impact of thermal deformation of CNC vertical lathes:
1. Optimize tool selection and cutting parameters
Choosing appropriate tools and cutting parameters is the key to reducing thermal deformation. Cutting parameters that are too small will cause excessive heating of the tool and thermal softening of the tool, resulting in a decrease in surface roughness and dimensional accuracy of the workpiece; cutting parameters that are too large will cause large changes in the surface of the workpiece. residual stress and thermal deformation. Therefore, appropriate cutting parameters and tool types should be selected to achieve better processing results.
2. Reduce chip temperature and workpiece surface temperature
Reducing the chip temperature and workpiece surface temperature generated during cutting can reduce thermal deformation and reduce the risk of breakage. The temperature can be reduced by spraying cutting fluid, reducing feed amount, reducing cutting speed and other methods.
3. Reduce processing temperature changes through preheating
For larger-sized workpieces, preheating is performed before initial processing, and the workpiece is heated to a relatively stable temperature before processing. This can reduce the temperature fluctuation of the workpiece during processing, thereby reducing the degree of thermal deformation. .
4. Accuracy of calibration equipment
The accuracy calibration of CNC vertical lathe equipment is very critical. Incorrect calibration will lead to large thermal deformation. Therefore, we can reduce the effects of thermal deformation by accurately calibrating the equipment.
In short, the influence of thermal deformation of CNC vertical lathe is one of the important factors affecting processing efficiency and processing quality. The influence of thermal deformation can be reduced by optimizing tool selection and cutting parameters, reducing cutting temperature, preheating the workpiece, and adjusting equipment accuracy. , can improve processing efficiency and processing quality, and obtain better processing results. Therefore, for CNC vertical lathe processing, methods and techniques to reduce thermal deformation are very important.