Error Analysis And Modeling Of High Precision Gear Artifact Machining Device

Gears are widely used in various industrial fields such as precision machinery,automobile manufacturing,aerospace,national defense and military,etc.With good driveability and interchangeability,involute tooth surface is often used as tooth profile of mechanical transmission parts.Gear involute artifact is a necessary high-precision measurement device for precision gear value transfer,manufacturing process and measurement standard.Dalian University of Technology Ling Siying’s team have designed a double-roller and double-rail prototype processing device with the ability to make 0 to 2 level precision artifacts.However,existing studies lack of systematic error source analysis and modeling of artifact processing device.So,it is necessary to analyze the error sources of artifacts processing device.By establishing an error transmission model to determine the main and secondary influencing factors which affect total deviation of artifact tooth surface.It can be used to guide precision improvement technology of high-precision artifact processing device.The main research work carried out in this paper as follows.Firstly,base on roller-guide mechanical spreading principle.Structural components of the spreading drive mechanism,roller sample assembly,grinding wheel mechanism and fixed assembly in artifact processing device are being analyzed.And power sources in complete device:servo motor,grinding wheel motor and electric push cylinder are being calculated and selected.Secondly,based on classification of the deviation of the tooth surface of involute artifact,mathematical transmission model of the total deviation of the artifact tooth surface being analyzed and deduced.Taking the roller artifact assembly of processing device as the research object like assembly error,installation eccentricity error and micro deformation error.In addition,since the grinding wheel position and size directly affect the artifact machining accuracy.The high-precision artifact machining device model is imported into ADAMS software.After applying the boundary conditions such as adding constraint subsets and driving functions,artifact involute model is established by using the model parameterization equations which based on the pure rolling forming principle of involute.The trajectory curves of the first,middle and last points on the artifacts with six different base circle are simulated.The grinding wheel size and mounting position of the grinding machine were determined.Finally,based on the engineering drawings of the involute artifact plate,guide rail and base wheel in the machining device.Numerical simulation was carried out about using three categories of manufacturing accuracy error,assembly error and installation eccentricity error,Finite element simulation was carried out using micro-deformation error after wheel-rail contact.The influence of static load on total deviation of the artifact tooth surface was calculated.The main and secondary factors affecting the total deviation of artifact tooth surface are synthesized.Method about square and root is applied to synthesize main influencing factors.Comprehensive error model was compared with the field measured data to verify the correctness of the single-factor error transmission model.Figure 56 Table 14...