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Step-less transmission technology is transmission fields of the research object of popular lasting, our country in this knowledge independent property relatively Mechanical step-less transmission at present application more have the planet type, belt, chain and pulsing, etc, the variable speed performance have different The present study basic for listed in the literature of various forms, do not change the structure, few big This design USES the space the camshaft to mobile realize stepless speed, using the CAM motion control output constant speed at a constant speed of sex, try for step-less transmission research provides new The transmission is the drive axle of agricultural equipment key components,it has a direct influence on the performance of the whole of the agricultural equipment operation If the transmission quality problems, small, noise, operation is not even; Big appear serious operation Domestic harvester widely adopted HR601 transmission, the transmission is early imported from America product, it highly integrated the transmission and differential, clutch, brakes and such devices, structure is more In use process transmission appeared some larger problem: such as transmission shell cracking, have very big noise, internal gear ablation, broken teeth and cause serious transmission fault These phenomena are the main structure design, material composition, manufacturing process and user use is not reasonable, etc of the cause, for these phenomena appear, put forward this topic, so as to the structure of the transmission properties of research and analysis, technical personnel to provide to improve product quality and improve the design