Study On The Tooth Surface And Dynamic Emulation Of Involute Beveloid Gear Formed By Movement Of Base Circle

Studied a new type of involute beveloid gear which was formed base on the movement of base circle.It has essential differences with the traditional involute beveloid gear in establishment principle.According to the basic principles of gear,when a gear with modification coefficient ,the tooth addendum, tooth dedendum, tooth thickness and space width of the gear will change.If it have a cluster of regular modification coefficients along the axialdirection of the gear,the thickness of tooth will change with regular,this constitute the traditional involute beveloid gear.However, with the changing of tooth thickness,the tooth addendum and tooth dedendum will change,then it lead to the tip diameter of involute beveloid gear will be stepup from the small end face to big end face,then the involute beveloid gear will be a conicity. So,it will have interference when regulating the backlash.But this new type of involute beveloid gear which was formed base on the movement of base circle could solve this problem.The basic establishment principle of this new type involute beveloid gear is that the base circle move ragularly along the axialdirection of the gear.So,the line formed by centers of base circles is misalign with axialdirection of the gear.Then the tooth thickness of involute beveloid gear is gradually getting thickening or thinning from the middle head face to another side.Because there is no modification coefficient, the tooth addendum and tooth dedendum will be same,then it will have interference when regulating the backlash,it could regulate the gap complete.The researchs in this paper are shown in the following:â‘ Studied the establishment principle and characteristic of this new type involute beveloid gear,compared with the traditional involute beveloid gear,this reflect the advantage of the involute beveloid gear formed base on the movement of base circle. According to the basic principles of gear,studied the methods to manufacture this new type involute beveloid gear.â‘¡According to the processing method by using the cutter of basic rack and the space Meshing Engagement Principles, the tooth surface equations of this new involute beveloid gear were derived by the cutter's for the fist time.The complete and precise tooth surface of this new involute beveloid gear was generated by using Matlab.The precise solid model of this involute beveloid gear was estaldished in Pro/E by three-dimensional coordinates of points on the generated tooth surfaces. â‘¢According to the tooth surface equations of this new involute beveloid gear and the principles of TCA,established the mathematical model of this new gear pair. Using Matlab decribe the contact points and lines of contact on the tooth surface,it achieved visualization of the contact analysis.â‘£Using ADAMS establish the dynamic model of this new gear pair.And then doing the dynamic emulation and analysis, acquired the curve about the force of engagement. Contrast with the force of engagement about standard spur gear which has backlash. This demonstrate the adjusting of this new type involute beveloid gear could effectively improve the meshing characteristic of spur gear.