Study On Theory And Processing Technology Of Beveloid Internal Gear Enveloping External-rotor Crown Worm Drive

With the development of science and technology,the development of robot technology has become the hottest subject in the field of industrial manufacturing,china has also increased its investment in robot research.In the future,the development trend of the robot field is the modular mechanical structure,as the three-in-one intelligent joint is of the servo motor,reducer and detection system.Aiming at the problem of industrial robot joint deceleration device of various components,precision manufacturing difficulty and so on,this paper proposed a novel worm drive with a few parts,high reliability,high precision,small volume,light weight,blacklash can be adjustable and wear volume can be compensated.This novel worm drive was composed as a beveloid internal gear and a external-rotor crown worm,the meshing performance and tooth shape,the high-precision machining process and the detection of the tooth surface were studied based on the meshing geometry theory,The main work of this paper was as follows:Firstly,in order to obtain the corresponding engage function,tooth surface equation and induced normal curvature,the principle of differential geometry and meshing was used,Combined with the active frame method,the primary-enveloping process of the beveloid internal gear enveloping crown worm drive was introduced.The influence of generating plane angle on contact wire was analyzed,and the contact line was drawn by MATLAB software.The worm gear drive with the center distance of 100 and the transimission ratio of 60 was designed by the previous calculation and analysis,the UG software was used to establish the crown worm and 3D gear profile of beveloid internal gear.Secondly,the processing technology of the beveloid internal gear and crown worm was analyzed and studied,according to the existed conditions;one of the practical methods was selected to develop the processing technology scheme.The cutting parameters were optimized and the metal cutting experiment table was set up.The tool cutting data were analyzed and processed,the empirical formula of tool cutting was established,and the tool cutting parameters were optimized by multi-objective optimization method.The optimization data of cutting parameters were obtained,and the multi-axis NC machining of the optimized trajectory was studied with UG software Program,the UG POST file was compiled,and finally the virtual simulation software Vericut was used to machining simulation,the actual field of CNC machine tool space structure model was established,and the model was introduced into the simulation software to simulation processing.The processing procedures correctness and the space clamping program were checked by compared the simelation result and the 3D model of theoretical designed,whether cut or collision were detected,and ultimately was the actual processing.Finally,in order to verify the correctness of crown worm processing,the detection method of crown worm was analyzed based on the coordinates of PC-DMIS software and the Leitz gear measurement center based on QUINDOS software.