INCREASING TECHNOLOGY IN THE DESIGN OF WAVE REDUCERS FOR POWER DRIVES REFERENCES

Gearboxes with a relatively high gear ratio of 200...300 and a torque of up to 6000 N•m are widely used in rotation drives of access restriction and safety devices. The supply of serial worm and planetary gearboxes with an output torque of 1000 N•m for industrial use is very limited. This has become especially evident after the reduction in the range of foreign-made gearboxes. Designing and manufacturing special gearboxes is associated with significant difficulties due to the large number of parts in planetary gearboxes and the need for specialized gear-cutting equipment. An alternative to planetary gearboxes are planetary-pinwheel and wave gearboxes with intermediate rolling elements. Wave gearboxes are a type of well-known planetary drives, the advantage of which, compared with planetary drives, is a higher gear ratio in one stage. The possibility of using normalized and improved steels for parts with a complex profile (rigid wheel and separator) with a limitation of their hardness is analyzed. This possibility allows using finish milling of these parts instead of expensive grinding finishing operations to improve the manufacturability of production. A method for determining the dimensions of the engagement elements of a wave reducer by the criterion of contact strength for pairs is proposed: wave former - roller, roller - rigid wheel, roller - separator. The possibility of determining the permissible contact stresses in the engagement by the methods of calculating cylindrical involute gears is considered, which allows taking into account the number of equivalent loading cycles, hardness and roughness of the working surfaces, as well as other parameters.