Speed reducer of novel industrial robot

Abstract

The invention provides a speed reducer of a novel industrial robot. The speed reducer includes a motor and a mounting plate for mounting the motor. A fixed inner gear ring is mounted on the mounting plate, a rotating disc is mounted between the fixed inner gear ring and the mounting plate, an annular roller path is arranged between the rotating disc and the fixed inner gear ring and between the rotating disc and the mounting plate respectively, a roll ball is mounted in the annular roller path, the rotating disc is provided with inner teeth, and a driving gear matched with the inner teeth is mounted on an output shaft of the motor. A pressing plate is fixed on the fixed inner gear ring, a movable inner gear ring is mounted between the fixed inner gear ring and the pressing plate, an annular roller path is disposed between the movable inner gear ring and the fixed inner gear ring and between the movable inner gear ring and the pressing plate respectively, and a roll ball is mounted in the annular roller path. A crankshaft is fixed at the center of the rotating disc, a bearing is mounted on the crankshaft, a dual gear is mounted on the bearing, and an external gear of the dual gear is meshed with the movable inner gear ring.

Description

technical field [0001] The invention relates to mechanical equipment, in particular to a novel industrial robot reducer. Background technique [0002] At present, the robot industry chain is roughly divided into upstream key components, midstream machine system integration and downstream applications. From the perspective of the industrial chain, there is a relatively large gap between upstream key components and foreign countries. Among all core components, the reducer is the most critical. The cost structure of industrial robots is roughly as follows: body 22%, servo system 25%, reducer 38%, control system 10% and other 5%. Simply splitting the cost of domestic 6-axis industrial robots (the total cost is 250,000 yuan), it can be seen that the cost of the reducer and the servo motor is close to 130,000 yuan, mainly imported, and once the localization is completed, the cost will drop significantly. There are three main types of reducer products for industrial robots, name...

AI Technical Summary

Problems solved by technology

Due to the RV cycloid reducer and harmonic reducer, these two reducers have obvious advantages, so industrial robots basically use these two reducers, but these two reducers have high machining accuracy, especially harmonic reducers The flexible wheel of the device is a special material with high cost and lack in the country. However, the radial difference sub-reducer described in the invention patent CN103982600A is difficult to guarantee the accuracy because the gear pair on the radial difference sub-frame is driven by friction.

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