电机微型齿轮的制造方法（Method for manufacturing micro gear of motor）.doc

电机微型齿轮的制造方法（Method for manufacturing micro gear of motor） Method for manufacturing micro gear of motor (articles by: networks) 1. the hob hobbing The hob is usually used to cut the gears on the hobbing machine. In micro gear (m0.1 or less) hobbing, the profile of hob must be micro machined. Because of the small tooth shape, besides the gear tooth profile error, the gear hole runout, the end face runout and the circumferential pitch error will have a great influence on the accuracy of the micro gear. And for the processing of hobbing machine, workpiece spindle, tool spindle and workpiece indexing mechanism and workpiece fixture in many aspects such as precision, stiffness and hob and workpiece installation precision manufacturing precision, and so on, will affect the micro gear so that it is necessary to improve the comprehensive overall precision manufacturing system. On the basis of that, the micro gears with the same modulus and different varieties can be produced easily by selecting the material with easy cutting. In The 2. injection molding plastic gear Plastic gears processed by injection molding are widely used in light loads such as office machines and household appliances, because they can be produced in large quantities in a short period of time. In recent years, in the injection molding technology continues to improve, the performance of the injection molding material of continuous improvement at the same time, injection molding gear accuracy is greatly improved, the important factors for gear precision molds and injection molding injection molding technology for the effect of injection molding method. In the production of mold, the main use of wire cutting and edm. But because of the influence of the wire diameter and the discharge gap of the forming electrode, the precision of the micro gear die is limited. Moulds can also be fabricated by electroforming. The basic gear used in electroforming can be improved by cutting or grinding. The base gear can be