Substrate Transfer Robot Teaching Using Integrated Detection Portions
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Solution Overview
Problem
Current substrate transfer systems face inefficiencies and inaccuracies in teaching work due to the need for a separate dummy cassette and potential shape discrepancies, leading to human error and reduced precision in loading and unloading substrates.
Innovation Solution
A substrate transfer robot system equipped with a hand, movement mechanism, and sensors that detect specific portions of a teaching jig to calculate and store transfer positions, eliminating the need for a separate dummy cassette and reducing human error by automating the teaching process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a separate dummy cassette is used for teaching work, then the teaching process can be performed, but the efficiency is reduced due to the need to prepare and handle an additional component
Solution Approach 1:
The patent merges the teaching function directly into the actual cassette by equipping it with detection portions, eliminating the need for a separate dummy cassette. The cassette now serves dual purposes: both as the operational container for substrates and as the teaching reference object, thereby simplifying the system and improving teaching efficiency.
Solution Approach 2:
The cassette is designed to serve multiple functions: it acts as both the operational substrate container and the teaching reference object with integrated detection portions. This multi-functionality eliminates the need for separate teaching equipment and streamlines the overall process.
2Measurement precision
If a dummy cassette is used for teaching, then teaching can be performed, but accuracy may be compromised due to shape errors between the dummy cassette and the actual cassette
Solution Approach 1:
By combining the teaching reference function directly into the actual cassette through integrated detection portions, the patent eliminates shape discrepancies between separate dummy and actual cassettes. The same physical object serves as both the operational container and the teaching reference, ensuring perfect shape consistency and accurate position detection.
3Ease of operation
If manual visual checking is used during teaching, then the robot can be positioned, but human error increases and precision decreases
Solution Approach 1:
The patent replaces manual visual checking with an automated optical detection system. Sensors detect the detection portions on the cassette to automatically determine the hand's entry position, eliminating human error and significantly improving positioning accuracy while maintaining ease of operation through automated processes.
Solution Approach 2:
The cassette performs self-detection through its integrated detection portions, automatically providing the necessary reference information for teaching without requiring manual measurement or visual verification by operators.
4Productivity
If sequential manual positioning is used for teaching, then the robot can be taught, but time is consumed and productivity is reduced
Solution Approach 1:
The patent replaces time-consuming manual sequential positioning with automated sensor-based detection. The sensors quickly and accurately determine the hand's entry position by detecting the detection portions on the cassette, dramatically reducing teaching time and improving productivity.
Solution Approach 2:
The detection portions are pre-positioned on the cassette at the exact locations where the hand enters during normal operation. This preliminary preparation allows the teaching system to directly measure the actual operational positions without requiring time-consuming manual positioning or calculations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Improves the efficiency and precision of teaching work by automating the detection and calculation of transfer positions, minimizing human error and ensuring accurate loading and unloading of substrates without requiring a dedicated teaching sensor.
Implementation Method 1
a first sensor that is provided on the hand and radiates a scanning line in the horizontal direction and a second sensor that is provided on the hand and radiates a scanning line in the vertical direction
Data Source
AI summary
A substrate transfer robot system teaches a transfer position of a substrate to a substrate transfer robot that transfers the substrate. The substrate transfer robot includes: a hand that transfers the substrate; a movement mechanism that moves the hand in horizontal and vertical directions; and first and second sensors that are provided on the hand and radiates a scanning line in the horizontal and vertical directions, respectively. The substrate transfer robot system includes: a controller that controls the hand and the movement mechanism; and a first portion to be detected and a second portion to be detected. The controller operates the hand to detect the first portion by the first and second sensors and detect the second portion by the second sensor, and calculates and stores the transfer position based on position information of the hand when the first and second portions are detected.