Design and analysis of new globoidal cam indexing mechanism with media point engagement
In this article,the conical roller tooth is used to create a globoidal indexing cam profile and realize point-contact conjugation with the spherical roller tooth.Thus,a new globoidal cam indexing mechanism with point engagement is developed.The technical implementation scheme is presented for this globoidal cam indexing mechanism with point engagement.The point engagement can be controlled by changing the radius of the spherical roller teeth,and the mechanism's adaptability to manufac-turing and installation errors can be improved.With the help of media conjugation,the engagement principle of this intermittent motion mechanism is analyzed.The equation of the media surface(the conical roller tooth profile)is used to work out the equa-tion of the indexing cam profile;the line-contact relationship between the conical roller tooth profile and the spherical roller tooth profile is used to derive the contact-trajectory equation and its induced curvature equation under the point-engagement condition between the indexing cam profile and the spherical roller profile,in order to determine the kinematic geometric parameters of the conjugate tooth with the optimal point-engagement performance of this high-pair mechanism.
万方数据
维普
