Robot Speed Reducer Life Estimation Simulator
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Solution Overview
Problem
Existing robot speed reducer life estimation methods either shorten the life of the speed reducer by increasing robot speed or require changes to the robot's path, which are not practical for extending the life without interfering with peripheral devices.
Innovation Solution
A simulator that calculates rotation speed and load for each sampling period, estimates speed reducer life, and adjusts the operation program to maintain the load within a reference value, thereby extending the life without altering the robot's path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the speed of a robot is increased to reduce cycle time, then productivity is improved, but the life of the speed reducer decreases
Solution Approach 1:
The invention changes the operational parameters (speed and acceleration) of the robot to optimize the balance between productivity and speed reducer life. By simulating and analyzing the relationship between operation parameters and speed reducer load, the system determines optimal speed and acceleration values that extend component life while maintaining production efficiency.
Solution Approach 2:
The invention performs preliminary simulation and analysis of the robot operation program before actual execution. By calculating the speed and acceleration for each motion segment and evaluating the resulting speed reducer life, the system can adjust parameters in advance to prevent excessive wear, rather than waiting for failure to occur.
2Reliability
If the operation program is corrected to extend speed reducer life, then reliability is improved, but the robot path changes causing interference with peripheral devices
Solution Approach 1:
The invention changes operational parameters (speed and acceleration) rather than geometric parameters (path coordinates). By modifying how fast the robot moves along the existing path rather than changing the path itself, the system extends speed reducer life while maintaining the robot's position accuracy and avoiding interference with peripheral devices.
Solution Approach 2:
The invention divides the robot motion into discrete segments and analyzes each segment's impact on speed reducer life. By calculating speed and acceleration for each motion segment separately and adjusting parameters locally, the system can extend overall component life without affecting the global path accuracy or causing interference issues.
Data Source
AI summary
A simulator (10) for estimating a life of a speed reducer includes a rotation speed and load calculator (21) for simulating the operation program of a robot (12) and calculating the rotation speed of the robot speed reducers (G1-Gm) and the load exerted on the individual speed reducers; a storage (22) for chronologically correlating the rotation speed and the load and storing the rotation speed and the load; a speed reducer life calculator (23) for calculating the life of the individual speed reducers, based on the rotation speed and the load; an operating ratio setter (24) for setting an operating ratio of the robot; and a speed reducer life estimator (25) for estimating the life of the speed reducers, based on the life of the individual speed reducers and the operating ratio.