The Dimension Synthesis And Visualization Software Development Of Cam Mechanisms With Negative Radius Follower

A cam mechanism with negative radius roller-follower is the research object of this paper.Since the contact state between the cam gear and its follower is concave and convex, it willsignificantly increase the integrative radius of curvature, reduce the contact stress and form thelubricating oil film easily; so that the contact strength, bearing capacity, lubrication performance,lubrication and friction abrasion resistance performance, transmission efficiency, working lifeand so on, will be greatly improved.Three constraints--motion fidelity condition, transmission performance condition andcontact stress condition, are taken into consideration during the dimension synthesis process ofthis mechanism. All the following researches are achieved by P type cam mechanism withnegative radius roller-follower.According to the relevant theory, the impact of three constraints on the dimension of thismechanism, and the corresponding expressions are acquired.Taking advantage of the data mining and scientific visualization, the dimension synthesistheory of the given offset mechanism which meets three constraints is obtained.Taking advantage of the data mining and scientific visualization, the dimension synthesistheory of variable offset mechanism which meets three constraints is obtained. This paperpresents the theoretical method of offset optimization, and summarizes the general methods ofsolving similar problems.The software, NDSVS, on the dimension of this mechanism is developed according to theabove theory.The dimension characteristics of this mechanism, the impact of three constraints on thedimension and the relationships among constraints are obtained.