Arc gear speed reduction device for robot joint

Abstract

The invention provides an arc gear speed reduction device for a robot joint. The arc gear speed reduction device comprises a front end cover, a first-stage transmission unit, a first-stage planet assembly, a second-stage planet assembly, an inner gear ring shell and a rear end cover. The first-stage transmission unit comprises a first-stage center gear, the first-stage planet assembly comprises a first-stage planet carrier and a plurality of first-stage planet wheels, the second-stage planet assembly comprises a second-stage planet carrier and a plurality of second-stage planet wheels, one end of the first-stage center gear is installed in the front end cover in a sealed manner, and the other end of the first-stage center gear is installed in the first-stage planet carrier in a sealed manner. The first-stage planet assembly and the second-stage planet assembly are installed in the inner gear ring shell after being connected in a sealed manner, one end of the second-stage planet carrier is installed in the rear end cover in a sealed manner, and the two ends of the inner gear ring shell are connected with the front end cover and the rear end cover in a sealed manner respectively. By the adoption of the technical scheme, the technical problems that in the prior art, the axial direction is long, the unit volume transmission rigidity is poor, the bearing capacity is low, rusting, corrosion and jamming are likely to happen, and the device is not suitable for severe environments are solved.

Description

technical field [0001] The invention relates to the technical field of reducers, in particular to an arc gear reduction device for robot joints. Background technique [0002] The deceleration device is one of the core components of the robot. Its function is to transmit the power of the servo motor, reduce the speed of the servo motor and amplify the torque, so as to accurately control the movement of the robot and carry related loads. The reduction gears for robots are divided into three categories: planetary reducers, harmonic reducers and RV reducers. Among them, planetary reducers are mostly suitable for small reduction ratio conditions (reduction ratio i≤50), and harmonic reducers and RV reducers are mostly used for large reduction ratio conditions (reduction ratio i≥50). [0003] At present, the traditional small reduction ratio planetary reducer has the following limitations: 1) The left and right parts of the planetary frame are split structures, which makes the tra...

AI Technical Summary

Problems solved by technology

[0004] The invention provides an arc gear reduction device for robot joints, which can solve the problem of long axial direction, large volume and weight, poor transmission rigidity per unit volume, low bearing capacity and easy rust, corrosion and jamming in the prior art. technical issues

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