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Introduction to the application of high-speed and high-efficiency gear processing machine tools
The high speed of gear processing machine tools such as gear hobbing machines, gear shapers and gear grinding machines mainly means that the machine tools have high tool spindle speed and high table speed, which are the main indicators to improve cutting efficiency.
The hob spindle speed of traditional mechanical gear hobbing machines is usually up to 500r/min, and the table speed is up to 32r/min. With the improvement of gear cutting tool performance, the high-speed and high-efficiency cutting of gear processing machine tools has been developed and matured rapidly , The gear hobbing cutting speed has been developed from 100m/min to 500~600m/min, and the cutting feed speed has been developed from 3~4mm/r to 20mm/r, which makes the maximum speed of the gear hobbing machine spindle up to 5500r/min. The maximum speed of the worktable can reach 800r/min, and the moving speed of machine tool parts can reach 10m/min. The high-power spindle system enables the machine tool to use a grinding wheel with a larger diameter and length for grinding, which is beneficial to increase the life of the grinding wheel and also facilitates operation The person chooses the optimal grinding parameters to complete the grinding process. (Guide: Problems that need attention in the selection of tools for CNC milling)
Efficient machining is ensured by the machine tool adopting special technology from all aspects: the casting bed with the best vibration absorption effect; the integrated cooling medium circulation system that makes the machine tool have the best thermal stability; the large inclination angle of the protective partition in the cutting zone And the smooth design allows the chips produced by dry cutting to be discharged quickly and effectively; it has a preloaded, non-backlash ball screw-driven feed system; it has a wear-resistant linear guide or a quantitative lubricated cast iron guide with PLC control. The application of the electric spindle has improved the tool spindle, and the increase of the table speed is the use of a high-precision helical gear pair or a torque motor. The electric spindle and torque motor have the advantages of high rotation accuracy, no backlash and no maintenance.
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