Research On Movable Teeth Harmonic Drive Mechanism Based On Group Linked CAM Transmission

With the advantages of small volume,light quality,light transmission ratio,strong load capacity,high efficiency,and high accuracy,it is widely used in many fields such as aerospace,robots,instruments,machine tools and manufacturing,and high-precision instruments.Although the harmonic transmission has the advantage of high transmission ratio,excessive transmission also limits its application range to a certain extent,and at the same time,there are shortcomings such as flexible gears that are prone to fatigue and damage.This article mainly refers to the principle of harmonic transmission,and on the basis of striving to maintain its advantageous characteristics,open up ideas,combines the internal and external forms of the internal and external groups of the joint cam drive to improve the transmission structure.That is,the rollers of multiple activities are used as intermediate parts instead of the fine teeth on the flexible and deformed flexible gears in the harmonic transmission,so that the rotation of the wave generator and the rotation of the rigid rotation can still be maintained.Adjusting is relatively flexible,and at the same time,it can alleviate the weakness of elastic deformation fatigue.The purpose is to propose a new living tooth harmonic transmission design idea to achieve more diverse structural forms and meet the purpose of different use needs.The specific research content of the paper mainly includes the following aspects:First of all,the working principle of existing harmonic transmission,including the typical structure,basic principles,and sports analysis of harmonic gear transmission;With work principle;explain the internal and external group cam structure and traditional harmonic transmission in the joint cam driven by the joint group,the similarity of the transmission relationship and characteristics.Then,learn from the internal and external cam structures in the linked cam driven by the joint group,combined with the harmonic transmission structure to propose the concept of living tooth harmonic transmission.By introducing the structure composition and transmission method of living tooth harmonic transmission,the relationship between the tooth,the characteristics of the coexistence,the calculation of the transmission ratio and the diversity of forms,etc.,try to improve the concept,structure and partial characteristics of the living tooth harmonic transmission,and propose two types of two types.Different forms of living tooth harmonic transmission.Finally,two forms of direct roller-type living teeth harmonic transmission and swinging roller-type living teeth harmonic transmission respectively introduce their structural composition and transmission methods,and describe the derivation of contour design ideas and contour equations through examples;For some examples,mechanical analysis and simulation are performed.