Reducer capable of regulating return difference

Abstract

The invention relates to a reducer capable of regulating return difference. The reducer comprises an outer shell, a compound planet gear, an input shaft and output shaft, wherein a first gear I of the compound planet gear is meshed with the fixed gear ring of the outer shell, and a second gear II thereof is meshed with the gear of the output shaft; the input shaft and the output shaft are in the same straight line, the eccentric shaft neck of the input shaft is provided with taper, and an eccentric sleeve is arranged between the eccentric shaft neck of the input shaft and the bearing of the compound planet gear; the eccentric sleeve is provided with a tapered hole, and the front end of the eccentric sleeve is provided with an elastic hanger; the eccentric shaft neck of the input shaft is tightly matched with the tapered hole of the eccentric sleeve; the centre hole of the output shaft is internally provided with an adjusting screw rod, a screwed hole at the large end of the adjusting screw rod is connected with an external thread at the other end of the input shaft; and the elastic hanger of the eccentric sleeve is inserted into a hanger groove at the larger end of the adjusting screw rod, and the larger end of the adjusting screw rod is connected with the output shaft through a bearing. The invention can carry out adjustment to enable the gear return difference to restore to an expected value, has simple, convenient and feasible adjustment, reduced gear manufacturing cost and prolonged service life. The second embodiment of the invention can realize automatically regulating return difference.

Description

technical field

[0001] The invention belongs to the field of speed reducers, and in particular relates to a speed reducer with adjustable hysteresis that can be adjusted to restore the gear hysteresis to an expected value, reduce gear manufacturing costs and prolong service life. Background technique

[0002] Because the general gear reducer has the necessary tooth side clearance, when the reducer rotates in the opposite direction, it must first idling until the other side of the tooth side contacts, so as to drive the output shaft to rotate in the opposite direction. This idling distance is the backlash. Difference. In some occasions that require precise transmission, such as precision machine tool feed reducer, robot joint reducer, solar tracking reducer, reducer for some automatic systems, and other reducers that require precise positioning, etc., it is necessary to reduce the hysteresis Reduced to as small as possible, otherwise it will not work properly. The reducer u...

Images