In view of the limited quantity of modified segments and poor adjustment ability of transmission ratio of high-order de-formed Pascal curve gear,a design procedure for high-order multistage deformed Pascal curve non-circular gear was proposed.The formation mechanism of the high-order multistage deformed Pascal curve non-circular gear was studied,and the unified mathematical expression of the high-order multistage deformed Pascal curve non-circular gears was derived,and its transmis-sion characteristics were discussed.The visual analysis and design software of high-order multistage deformed Pascal curve non-circular gears was compiled based on MatLab,and was verified with the example.The example showed that the high-order multi-stage deformed Pascal curve non-circular gears was feasible in practice.
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