Simulation of the machining principle of hobbing and grinding cycloidal gears with worm cutters and hobbing tests
WU Jinhao
WEI Bingyang
WANG Jianwen
ZHOU Guojun
Abstract：[Objective]As the core component of rotary vector reducers,cycloidal gears rely on high-efficiency and precision machining methods to guarantee the overall performance of reducers.Accordingly,a fundamental method covering the hobbing and grinding processes of cycloidal gears was proposed.[Methods]Firstly,meshing equations were derived based on the forming principle of helicoids and spatial coordinate transformation,and geometric motion models for closed tooth profile curves of cycloidal gears,worm cutters and tooth lead modification were established.Secondly,a prototype model of the hobbing-grinding machine tool was constructed using Vericut software to conduct motion simulation of the generated surfaces,followed by comparison with theoretical surfaces.[Results]The deviation between simulation results and theoretical values is less than 0.004 mm.Hobbing machining test results verify the accuracy of the established theoretical model and the feasibility of the worm cutter hobbing-grinding technology,laying a foundation for high-efficiency continuous tooth profile machining and three-dimensional topological modification of cycloidal gears.
Keywords：Cycloidal gearWorm cutterTooth lead modificationGear hobbingGear grinding
Publication Date：2026-08-15
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：9( 103-111 )