Robot Motor Flange Winding Space Design
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Solution Overview
Problem
Existing robot assembly methods face challenges in winding timing belts around pulleys without applying excessive load, which can damage the belt and affect the accuracy and reliability of the assembly process.
Innovation Solution
The design includes a housing with protrusions that support the flange of the motor, allowing the belt to be wound around the pulley without strong bending, using a configuration where the separation distance between support sections is shorter than the flange length and missing sections is longer, enabling smooth belt winding and reduced load on the belt.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the timing belt is wound around the pulley connected to the servo motor, then the driving force can be transmitted to the robot arm, but the timing belt must be bent strongly which applies excessive load and may damage the belt
Solution Approach 1:
The patent introduces a new spatial dimension by providing a winding space that allows the timing belt to be routed around the pulley in a three-dimensional path rather than a flat plane. The winding space includes a first space above the pulley and a second space below the pulley, enabling the belt to bypass the motor body and be wound without strong bending. This dimensional approach resolves the contradiction by allowing power transmission while protecting belt strength.
2Measurement precision
If the flange is placed on the protrusion to determine vertical position with high accuracy, then positioning precision is improved, but the motor body cannot be moved close to the belt for proper belt winding
Solution Approach 1:
The patent segments the protrusion structure into distinct functional regions: a first protrusion that provides positioning support and a second protrusion that creates the winding space. This segmentation allows the positioning function and the belt winding function to be separated spatially, enabling both high positioning accuracy and easy belt winding operation without interference between these functions.
Solution Approach 2:
The patent utilizes vertical dimensionality by creating a winding space that extends above and below the pulley plane. The motor body can be positioned vertically with high accuracy via the flange-protrusion interface, while the winding space provides the necessary vertical clearance for belt routing without requiring strong bending. This dimensional separation resolves the contradiction between positioning precision and winding accessibility.
Data Source
AI summary
A robot includes a first member and a second member, the first member includes a housing having a first wall and a second wall disposed to face each other, a first protrusion, and a second protrusion, a drive section having a motor body, a drive pulley and a flange, a joint section having a driven pulley and a belt, the first protrusion and the second protrusion having support sections that support both end portions of the flange, a separation distance between the support sections being shorter than a length of the flange in which the flange protrudes, and missing sections configured such that a separation distance between the missing sections is longer than the length of the flange in the direction in which the flange protrudes, both end portions of the flange passing through the missing sections.