Eccentric oscillating speed reducer

Abstract

An eccentric oscillating speed reducer includes: first and second external gears, each having shaft penetration holes in respective circumferences thereof; eccentric shafts, having first and second crank portions passing through the shaft penetration holes, with the first and second external gears furnished on the first and second crank portions, respectively; a supporting member inserted througha first shaft penetration hole of the first external gear and a second shaft penetration hole of the second external gear, and being in eccentric contact with inner peripheries of the shaft penetration holes; first and second output portions, each having shaft penetration holes on respective circumferences thereof, with both ends of an axis of each of the eccentric shafts furnished in the shaft penetration holes, and the first and second output portion being connected by the supporting member; and an annular gear engaged with the first and second external gears. The device is helpful for extending the operating life of the eccentric shaft and bearing.

Description

technical field [0001] The invention relates to an eccentric oscillating deceleration mechanism, in particular to an eccentric oscillating decelerating device which has the effect of improving the rigidity in the radial direction and the axial direction and can prolong the service life of the bearing. Background technique [0002] The reducer is a power transmission mechanism, which combines the number of revolutions of the motor through a combination of multiple gears to obtain the required number of revolutions, thereby achieving a deceleration effect and obtaining a larger torque. Among the mechanisms currently used to transmit power and motion, cycloid reducers are mainly used in industries that require high-precision positions, such as robotic arms used in the machinery industry, semiconductor manufacturing, and precision packaging machinery. [0003] Such as Figure 1A and Figure 1B As shown, it shows the eccentric oscillating speed reducer of the prior art. The actu...

AI Technical Summary

Problems solved by technology

[0006] like Figure 1C As shown, F1 and F2 are the forces acting on the external gears 301 and 302 by the eccentric shaft body 200, F1x and F2x respectively represent the force on the external gear 301 and the external gear 302 in the X direction, F1y and F2y represent the external gear 301 and the external gear respectively 302 is stressed in the Y direction, RA and RB are the forces acting on the output end 500 by the eccentric shaft body 200, that is, RAH and RAV are the forces acting on the end plate 501 by the eccentric shaft body 200, and RBH and RBV are the forces acting on the end plate 501 by the eccentric shaft body 200. When the force acting on the end plate 502 transmits a large torque under a high reduction ratio, it is easy to cause bending deformation of the eccentric shaft body 200, and fatigue damage occurs; in addition, in the prior art, the eccentric shaft body 200 The tapered roller bearing 600 is also prone to failure due to high torque loads

[0007] It can be seen from the above that the eccentric oscillating reduction gear in the prior art has the defect that the eccentric shaft body is easily bent and deformed due to the force, and the tapered roller bearing is also prone to failure due to high torque load. If a structure can be found, It can disperse the load of the eccentric shaft body or the tapered roller bearing, which will help to improve the operating life of the eccentric shaft body and the bearing. This is one of the goals that people in the technical field are currently eager to pursue.

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