Servo Motor Positioner and Planetary Drive for Precise Rotation
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Solution Overview
Problem
Existing robot servo motors fail to achieve precise rotation angles, which is crucial for meeting current industrial demands.
Innovation Solution
A robot servo motor design incorporating a positioner configured in a polygon limiting mode with a multi-layer planetary transmission, a circuit board, and a connecting mechanism to enhance precision in rotation angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional motor and planetary transmission assembly is used, then the device complexity is reduced, but the manufacturing precision of rotation angles deteriorates
Solution Approach 1:
The patent replaces the conventional multi-layer planetary transmission mechanism with a direct-drive structure combined with a high-precision encoder. The encoder provides precise rotation angle feedback through electronic measurement, substituting the mechanical gear reduction and differential mechanisms with an electronic sensing and control system. This achieves high precision rotation angle control while simplifying the mechanical transmission structure.
2Manufacturing precision
If a positioner with polygon limiting mode is added to improve rotation angle precision, then the manufacturing precision improves, but the device complexity increases
Solution Approach 1:
The patent introduces a polygon limiting positioner as an intermediary component between the motor and the output shaft. This positioner features a polygonal limiting groove that mechanically constrains the output shaft to specific angular positions, providing precise rotation angle control through geometric constraint rather than complex electronic control systems. The positioner acts as a mechanical mediator that translates continuous rotation into discrete, precise angular positions.
Data Source
AI summary
The present invention discloses a robot servo motor, comprising a positioner, a connecting screw, mounting bolts, a polygonal connecting groove, a blank-off plate, a connecting wire, a connecting tube, an energized wire, a base, a first fastening bolt, a circuit board, a motor, a multi-layer planetary transmission, a second fastening bolt, a protection plate, a third fastening bolt, a rotating disc and an output shaft; wherein the output shaft is fixedly engaged with the rotating disc via the connecting screw, and the rotating disc is threadedly engaged with the third fastening bolt, while the output shaft is fixedly engaged on the output end of the multi-layer planetary transmission; the top end of the multi-layer planetary transmission is fixedly engaged with the blank-off plate via mounting bolts.