Based On Reverse Engineering Principles Study On Non-circular Gears Rotary Transplanting Mechanism

China's enterprises and research departments study on the advanced transplanting mechanism by simple mapping and copy.The rotary transplanting mechanism by non-circular gears transmission.Drive ratio affect the trajectory of seeding needle.So simple mapping can not meet the transplant rice seeding requirements and can not optimization to non-circular gears parameters.In order to solve this problem,author proposed based on reverse engineering principles study on non-circular gears rotary transplanting mechamism.Though map non-circular addendum circle data, the date is fitted a smooth curve by interplation in MATLAB softward.According to relation of addendum circle and pitch curve get the non- circular pitch curve data.Then smooth the pitch curve data by curve fitting tool in MATLAB softward,remove the error of point,establish the curve's function expression.Optimization the gear center distance by golden section method.Even more,design a softward on simulation the trajectory of seeding needle in non-circular gears transplantion mechanism.Test though mapping and designed the non-circular pitch curve and transplanting mechanism whether meet transplanting rice requirement.At the same time,meet no interference requirement.This article proposed fourier function curve and round-oval curve,designed fourier curve non-circular gears transplanting mechanism,Z type fourier curve non-circular gears transplanting mechanism and round-oval curve non-circular gears transplanting mechanism.The three agencies meet transplanting requirement.Kinematics analysis and optimization parameters to the agencies.In order to sovle the gear manufacture problem,desiged the non-circular gear shape softward on round-oval pitch curve.According to this softward analysis whether the non-circular have undercutting and other defect.Though this softward can auto-generat CAD map.Manufacture the round-oval pinch curve non-circular gears transplanting mechanism and made the transplant rice test.The agency have a good effect on transplant rice.So test this method is correctly.