Duplex Involute Tooth Drive

A brief introduction about structural character of, the transmission principle of and the basic feature of sliding-teeth transmission is presented in this paper. Based on this, composing character of motion pair, structural model and lower pair抯 replacement mechanism of type I and type II sliding-teeth transmission are analyzed. By kinematics analysis about sliding-teeth transmission, sliding-teeth moving rules of two basic transmission models are found out, and motion transform among three components about the mesh pair is analyzed. The calculation method of transmission rate about sliding-teeth transmission is studied, and the relation between turning of driven wheel and tooth numbers of center wheel and sliding-teeth wheel is discussed. The research on sliding-teeth transmission gives theoretical analysis about two problems of the tooth profile synthesis of sliding-teeth transmission-- tooth profile synthesis positive solution problem and inverse solution problem by applying the equivalent mechanism method. Based on analysis the continuous transmission condition of sliding-teeth transmission, the problems of segistration coefficient and tooth profile trimming are discussed. Based on discussing the advantages and disadvantages between one tooth difference sliding- teeth reducer and double cams sliding-teeth reducer, a new sliding-teeth reducer, i.e. double canis sliding-teeth reducer with involute tooth profile is presented. Center wheel adopts involute inner gear with positive displacement modified. The tooth profile of the double generating-wave cams employs compound curves constituted with multinomial curve, distortion involute and arc. Applying the similarity transformation method derives out the theoretical profile equation and practical profile equation of the double wave generating cams corresponding to inner gear. Multinomial curve equation and arc curve equation are derived out with analysis method, which curves can be smoothly connected with working curve. The locations of inner gear抯 practical work and non-work portion derive from profile equation of the double generating-wave cams. The structural style of sliding-teeth is introduced at the same time. The design parameters and important structural problems such as the nonintervention condition, continuous transmission condition and segistration coefficient are discussed in detail as well. Does research on production, choice cutters and production parameters of inner gear. And gives a design instance about double cams sliding-teeth reducer with involute tooth profile, which sliding-teeth reducer is two stages in series. The intervention condition and the infection of the generating-wave cam that deviated from its center about the reducer are emulated.