Robot Motion Speed Segmentation for Safe High-Speed Set-Up
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Solution Overview
Problem
Robot applications often require high speeds for automatic operation, making it unsafe for humans to be nearby, but setting up these applications at reduced speeds limits the evaluation and testing of process movements.
Innovation Solution
Implementing a method where the robot operates at high speeds during set-up operations for process movements while restricting transfer movements to lower speeds, allowing for safer evaluation and testing while maintaining high process movement speeds, and incorporating error responses to ensure safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the robot operates at high speeds during set-up operations, then productivity and measurement precision are improved, but safety deteriorates and harmful factors increase
Solution Approach 1:
The patent segments the robot application into two distinct types: process movements (which may run at high speeds during set-up) and transfer movements (which are limited to lower speeds). This segmentation allows high-speed operation for evaluation purposes while maintaining safety for movements that pass through human-accessible areas, thereby resolving the contradiction between measurement precision and safety.
Solution Approach 2:
The patent applies different speed characteristics to different types of movements locally. Process movements can have high speeds to enable proper evaluation of grinding processes, while transfer movements are restricted to lower speeds for safety. This local differentiation of speed properties allows the system to simultaneously achieve both evaluation precision and safety.
2Object-affected harmful factors
If the robot operates at reduced speeds during set-up operations, then safety is improved, but productivity and measurement precision deteriorate
Solution Approach 1:
The patent divides robot movements into process movements and transfer movements, allowing process movements to operate at high speeds during set-up operations. This enables proper evaluation of process quality (grinding accuracy, surface finish) while transfer movements maintain lower speeds for safety, thus resolving the contradiction between safety and measurement precision.
Solution Approach 2:
Different speed characteristics are assigned to different movement types: process movements utilize high speeds for accurate evaluation of manufacturing processes, while transfer movements are locally restricted to lower speeds. This local quality differentiation ensures both safety and measurement precision are achieved simultaneously.
3Object-affected harmful factors
If protective fences are installed, then safety is improved, but ease of operation deteriorates
Solution Approach 1:
The patent implements dynamic speed control based on the type of movement being executed. During set-up operations, process movements can run at high speeds while transfer movements are limited, allowing operators to safely observe and evaluate critical processes without requiring physical barriers. This dynamic differentiation eliminates the need for protective fences while maintaining safety.
4Object-affected harmful factors
If transfer movements are limited to lower speeds, then safety is improved, but productivity deteriorates
Solution Approach 1:
The patent segments robot operations into process movements (handling and machining workpieces) and transfer movements (positioning between stations). By limiting speeds only for transfer movements while allowing process movements to operate at high speeds, the system maintains safety during positioning while preserving productivity during actual work operations.
Solution Approach 2:
Speed limitations are applied locally only to transfer movements that pass through human-accessible areas, while process movements that perform value-added operations maintain high speeds. This localized speed control ensures safety without significantly impacting overall productivity, as the critical manufacturing processes can still operate efficiently.
Data Source
AI summary
A method for carrying out a robot application includes controlling the robot to: carry out a transfer movement in a set-up operation, in which the robot speed reaches a set-up transfer movement top speed; carry out a process movement in the set-up operation, in which the robot speed reaches a set-up process movement top speed; carry out the transfer movement in an automatic operation, in which the robot speed reaches an automatic transfer movement top speed; and carry out the process movement in the automatic operation, in which the robot speed reaches an automatic process movement top speed.