Robot Arm Motion Correction for Longer Reducer Life
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Solution Overview
Problem
Existing robot arm systems face reduced component lifespan and longer cycle times due to improper speed settings, with existing life estimation methods failing to provide optimal motion conditions for extending reducer life.
Innovation Solution
A display apparatus and method that acquires a basic motion program for a robot arm, calculates the initial life of the arm, creates a corrected motion program to extend its lifespan by adjusting the position of the proximal end, and displays the optimal position for longer life, thereby reducing load on components and extending the arm's operational life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the robot arm operates based on a basic motion program with fixed proximal end position, then the work motion is simple and easy to implement, but the life of the robot arm components is reduced due to improper speed settings and excessive load
Solution Approach 1:
The system performs preliminary life estimation calculations before executing the actual work motion. By calculating the expected life of robot arm components based on the motion program and operational conditions in advance, the system can identify potentially harmful speed settings or positions that would reduce component lifespan, and adjust the motion program beforehand to prevent damage while maintaining ease of implementation
Solution Approach 2:
The system establishes a feedback loop where the calculated life estimation is fed back into the motion program creation process. The life estimation unit evaluates the basic motion program, and when the estimated life is insufficient, the system automatically creates a corrected motion program with adjusted speed conditions or proximal end positions, then re-evaluates until acceptable life is achieved, ensuring component reliability without manual intervention
2Productivity
If the robot arm speed is increased to improve productivity, then the cycle time is reduced, but the load on components increases and component lifespan decreases
Solution Approach 1:
The system dynamically adjusts motion parameters such as speed and position based on life estimation calculations. When high speed is required for productivity, the system identifies specific time points or positions where excessive speed would harm components, and creates corrected motion programs that modify speed profiles at those critical points, thereby maintaining overall productivity while protecting component lifespan through targeted parameter optimization
3Reliability
If the position of the proximal end of the robot arm is changed to extend component life, then the life is prolonged, but the motion path and work efficiency may be affected
Solution Approach 1:
The system applies partial modifications to the motion program by changing the proximal end position only at specific time points or positions where it most effectively extends component life, rather than uniformly altering the entire motion path. This targeted approach minimizes the impact on work efficiency while achieving the goal of prolonging robot arm component lifespan through selective position adjustments
Data Source
AI summary
A display apparatus includes an acquisition unit acquiring a basic motion program, a life calculation unit calculating a first life of a robot arm when a motion is performed based on the basic motion program acquired by the acquisition unit, a creation unit creating a corrected motion program for setting a life of the robot arm to be a second life longer than the first life using the same configuration of the robot arm and work start position and work end position of a control point as those of the basic motion program and changing a position of a proximal end of the robot arm, and a display unit displaying a position of the proximal end of the robot arm in the corrected motion program.