The Parameter Machining And Testing Research Of Plane CAM

Parallel indexing cam is a new indexing mechanism which is used to transfer intermissive motion between two parallel axes. With the development of science and technology, all kind of automatic mechanism with high speed are on the increase, the mechanism's action frequency becomes higher and higher. Parallel indexing cam can satisfy this requirement, so it is used widely. This paper discusses the indexing mechanism, and develops CAD/CAM system of parallel indexing cam.(1)This paper analyzes the parallel indexing cam according to its kinematics theory, which is the basis of parallel indexing cam design. Basing on the reverse theory of the cam, I deduce accurate theoretically contour equation, working contour equation, and tool center track. At the same time ,I also consider the condition of outside radius,the condition of pressure angle and the condition of undercut.(2)This paper adopts the soft tool of VC++6.0, and develops CAD/CAM system of parallel indexing cam, which can achieves the cam's contour designing ,tool center track calculating ,parameter judging ,pressure angle curve drawing and machine simulation. With the CAD/CAM system, it can also output the NC machine code.(3)This paper analyzes the error curve of parameter, and establishes the optimize model for minimum touch stress of the rollers. It makes use of the optimization toolbox of MATLAB for optimize designing.(4)This paper adopts SolidWorks soft to establish the three-dimensional model and finishes the motion simulation. In the process of motion emulation, it analyses each roller kinetic characteristic. At last, I finished numerical control machining by the intelligent CNC cam grinder and carried out the assembly of the parallel indexing cam mechanism. By all above content, it verified thecorrectness of the program ultimately.