Plane steel ball reducer based on tapered roller bearing

Abstract

The invention discloses a plane steel ball reducer based on a tapered roller bearing, comprising an eccentric shaft, a first end cover, a first shell, a second shell, a tapered roller bearing, a movable tooth frame, movable tooth steel balls, a central wheel, a second end cover and an output shaft; wherein the eccentric section of the eccentric shaft is connected with the tapered roller bearing; around raceway is arranged on the tapered roller bearing; the output shaft is fixed at the tail end of the movable tooth frame; a plurality of tooth grooves are circumferentially distributed on the movable tooth frame; a movable tooth steel ball is arranged in each tooth groove; a plurality of sine raceways are circumferentially distributed on the central wheel; the round raceway, the tooth grooves and the sine raceways are meshed through the movable tooth steel balls; the high-speed rotary motion of the eccentric shaft can be converted into the low-speed swing of a bearing outer ring by the tapered roller bearing, so that the relative sliding of meshing pair can be reduced greatly and the transmission efficiency can be improved; at the same time, through the axial pre-tightening of tapered roller bearing, the pre-tightening of the whole transmission system can be conveniently realized, the backlash of the meshing pair can be eliminated, and the transmission precision can be improved.

Description

technical field [0001] The invention relates to the technical field of mechanical transmission, in particular to a planar steel ball reducer based on tapered roller bearings. Background technique [0002] With the continuous development of movable tooth transmission, many new movable tooth reducers have come out one after another. A movable tooth cam mechanism (201510629776.4) through the swing plate output can realize the conversion of uniform speed input into Various forms of oscillating cam output motion, but the high-speed rotation of the input shaft greatly improves the relative sliding between the meshing pairs; the planar steel ball reducer is a representative transmission type in the movable tooth transmission, not only small in size, but also due to the excitation The raceways of the oscillator and the end face of the center wheel are processed in the plane, and the manufacturing process is good, but the input shaft of the plane steel ball reducer rotates at high sp...

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Problems solved by technology

[0002] With the continuous development of movable tooth transmission, many new movable tooth reducers have come out one after another. A movable tooth cam mechanism (201510629776.4) through the swing plate output can realize the conversion of uniform speed input into Various forms of oscillating cam output motion, but the high-speed rotation of the input shaft greatly improves the relative sliding between the meshing pairs; the planar steel ball reducer is a representative transmission type in the movable tooth transmission, not only small in size, but also due to the excitation The raceways of the oscillator and the end face of the center wheel are processed in the plane, and the manufacturing process is good, but the input shaft of the plane steel ball reducer rotates at high speed directly meshes with the movable teeth, which will seriously affect the transmission efficiency. The advantages of the planar steel ball reducer and the planar steel ball reducer that can achieve high efficiency while maintaining high precision can be applied to the development needs of more new technologies and new equipment

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