Method for improving gear precision of China dc motor 12v
In the process of using the brushless DC motor, the accuracy of the gear may be inaccurate, which may cause the abnormal use of the small motor. Therefore, some solutions can be considered according to this phenomenon, such as the accuracy analysis of the hobbing and the radial runout of the ring gear. Analysis of errors and other aspects, the specific operations are as follows:
1. Analysis of hobbing machining accuracy: The accuracy of the shaft tooth is mainly related to the motion accuracy, the stationarity accuracy and the contact accuracy. In the hobbing process, the length of the common normal line and the ring diameter jump are used to ensure the motion accuracy. The tooth profile error and the base curve deviation are used to ensure the smoothness of the work. The tooth pitch error is controlled to ensure the contact accuracy.
2. Ring spring runout error: The ring gear radial runout means that the probe is in the tooth groove or on the gear teeth within the range of the gear rotation, and the two sides of the tooth height are in contact with each other. The probe is relative to the tooth axis. The maximum amount of change. It is also the eccentricity of the gear ring relative to the centerline of the shaft. This eccentricity is caused by the fact that the two central holes of the part do not coincide or deviate too much from the center of rotation of the table when the parts are mounted.
Or because the top and top holes are not well manufactured, the positioning surface is not well contacted, resulting in eccentricity. Therefore, the ring diameter jump should be mainly solved from the above reasons. The solution is not only one, but the root cause can be considered from various aspects.
