To reduce the impact of thermal deformation on CNC lathes, the following measures can be taken:
1. Control the heat source:
Reduce the heat generated during the cutting process of CNC lathes, such as optimizing cutting parameters, selecting appropriate tools and cutting fluids, to reduce cutting heat.
Adjust the CNC lathe spindle bearing speed, clearance and reasonable pre-tightening to reduce bearing heating.
For components that generate large amounts of heat, such as thrust bearings and tapered roller bearings, low-heat components such as thrust angular contact ball bearings can be used instead.
2. Thermal insulation design:
CNC lathes use heat source isolation technology to keep the heat source away from the spindle and key components, such as motors and transmission systems, to reduce the impact of heat on the machine tool.
A thermally symmetrical structure is adopted in the structural design of CNC lathes to reduce the occurrence of thermal deformation.
3.Heat dissipation measures:
Strengthen the heat dissipation system of CNC lathes, such as using heat sinks, fans, cooling water and other heat dissipation methods to reduce the temperature of the machine tool.
Take strong cooling measures for CNC lathe cutting parts, such as using multiple nozzles and large flow of coolant to cool and remove hot chips.
In the heating part of the CNC lathe (such as the spindle box, hydrostatic guide hydraulic oil, etc.), heat dissipation, air cooling, and liquid cooling are used to control the temperature rise.
4. Thermal displacement compensation:
Predict the law of thermal deformation, establish a mathematical model and store it in the computer for real-time compensation to offset the impact of thermal deformation on machining accuracy.
5. Improve machine tool layout and structural design:
Optimize the layout and structural design of CNC lathes, such as using inclined beds, flat beds, inclined slide structures, etc., to improve the rigidity and stability of the machine tools.
6. Improve the technical level of machine tool operation:
CNC lathe operators need to correctly select suitable fixtures and process parameters to ensure processing quality and process accuracy.
CNC lathes monitor and adjust during the machining process to detect and solve problems in time to avoid problems such as material overheating, fixture failure, and excessive cutting due to improper operation.
7. Regular inspection and maintenance:
Regularly inspect and maintain CNC lathes, such as cleaning the surface and interior of the machine tool, checking and tightening the connections of various components, replacing worn parts, etc., to maintain the good condition of the machine tool.
In summary, reducing the impact of thermal deformation on CNC lathes requires controlling heat sources, insulation design, heat dissipation measures, thermal displacement compensation, improving machine tool layout and structural design, improving machine tool operating technology, and regular inspection and maintenance. . The implementation of these measures can significantly reduce the impact of thermal deformation on processing accuracy and improve the processing performance and service life of CNC lathes.