Workpiece Processing Apparatus Integrated Defect Detection
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Solution Overview
Problem
Conventional workpiece processing techniques require separate defect inspection and positioning steps, leading to increased time, cost, and space requirements due to the need for additional inspection apparatuses and complex transfer paths.
Innovation Solution
A workpiece processing apparatus that integrates defect detection capabilities, using stored rotational distance information to position and orient the workpiece while identifying defective edges, allowing for simultaneous defect detection and positioning adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate defect inspection apparatus and positioning apparatus are used, then defect detection capability is improved, but device complexity and space requirements increase
Solution Approach 1:
The patent combines the defect inspection function and positioning function into a single integrated apparatus. The imaging unit captures images of the workpiece edge, and the same apparatus determines position information from these images, eliminating the need for separate inspection and positioning devices.
Solution Approach 2:
The workpiece processing apparatus is designed to perform multiple functions: it can inspect for defects, determine position information, and control the workpiece position. This multi-functional design reduces the overall number of apparatuses needed in the system.
2Measurement precision
If separate defect inspection and positioning steps are implemented, then inspection accuracy is improved, but processing time increases
Solution Approach 1:
The apparatus performs defect inspection and position determination in a continuous process using the same imaging data. The imaging unit captures the workpiece edge, and the position determination unit immediately processes this data to determine position information, eliminating the time loss associated with transferring workpieces between separate inspection and positioning apparatuses.
Solution Approach 2:
The apparatus determines position information based on images captured during the inspection process itself, rather than requiring separate positioning measurements. This preliminary determination of position from inspection images reduces the overall processing time.
3Reliability
If additional defect inspection apparatus is added to the workpiece transfer path, then defect detection capability is improved, but space requirements and installation complexity increase
Solution Approach 1:
The patent integrates the defect inspection function into the existing workpiece processing apparatus, eliminating the need for additional separate inspection apparatus and the space they would occupy along the transfer path.
Data Source
AI summary
A workpiece processing apparatus includes: a first rotational distance information storage unit that stores multiple pieces of first rotational distance information, each of which is information having, in association with each other, a rotational angle, and first distance information regarding a distance from a rotation center to an edge of a circular workpiece corresponding to the rotational angle, in a case where the workpiece is rotated; an acquiring unit that acquires information for positioning the workpiece, information for specifying an orientation of the workpiece, and information regarding a defective portion at the edge of the workpiece, using the multiple pieces of first rotational distance information stored in the first rotational distance information storage unit; and an output unit that outputs the information for positioning the workpiece, the information for specifying the orientation of the workpiece, and the information regarding the defective portion, which are acquired by the acquiring unit.