Board Mounting System Position Deviation Detection
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Solution Overview
Problem
Existing component mounting devices face challenges in accurately determining whether a positional deviation has occurred between the actual board and CAD data, leading to potential incorrect component placement due to discrepancies in the board manufacturing process, requiring time-consuming confirmation operations.
Innovation Solution
A mounting system that includes a component mounting device with an imaging unit and a control device, which compares image data of the board surface with CAD data to determine if there is a positional deviation, displaying match or discrepancy information and generating a job file to correct mounting positions if necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the operator manually checks the CAD data to recognize the mounting position, then the mounting position can be identified, but time is required for the confirmation operation and positional deviation may go undetected
Solution Approach 1:
The patent replaces the manual visual checking process with an imaging device that captures images of the board and automated image processing that compares actual features with CAD data. This substitution of mechanical/manual inspection with optical and computational systems eliminates time loss while maintaining or improving positioning accuracy through automated deviation detection.
Solution Approach 2:
The system performs self-verification by automatically comparing the imaged board features with the CAD data without requiring operator intervention. The control device autonomously identifies positional deviations and can trigger corrections, making the system self-sufficient in verifying mounting positions and eliminating the need for time-consuming manual confirmation.
2Reliability
If manual confirmation of positional deviation is performed, then potential errors can be detected, but the mounting process becomes time-consuming and productivity decreases
Solution Approach 1:
The patent replaces manual error detection with automated image processing that compares actual board features with CAD data. The imaging device and control device work together to automatically identify positional deviations, maintaining high reliability in error detection while eliminating the time loss associated with manual checking, thus preserving productivity.
Solution Approach 2:
The system performs preliminary detection of positional deviations by capturing images and comparing them with CAD data before the actual component mounting process. This advance detection allows the system to identify and correct positioning errors proactively, ensuring reliability while maintaining fast mounting speeds by preventing errors rather than detecting them during or after mounting.
3Productivity
If the component mounting device operates without automated position verification, then the mounting process is fast, but positional deviations between actual board and CAD data may result in incorrect component placement
Solution Approach 1:
The patent implements preliminary position verification by capturing images of the board and comparing them with CAD data before component mounting begins. This advance verification identifies positional deviations in the board itself, allowing the system to correct mounting positions proactively. As a result, the system maintains fast mounting speeds while ensuring high component placement accuracy by preventing errors before they occur.
Solution Approach 2:
The system establishes a feedback loop where the imaging device continuously monitors board position and compares it with CAD data, providing real-time information to the control device. This feedback mechanism allows the system to detect and correct positional deviations dynamically, maintaining both high mounting speed and precise component placement by adjusting mounting positions based on actual board conditions.
Data Source
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AI summary
A mounting system comprising a component mounting device configured to mount a component on a surface of a board, and a control device, wherein a planned mounting section, at which mounting of a component by the component mounting device is planned, is provided on the surface of the board; wherein the component mounting device comprises an imaging device, being configured to image the surface of the board, and mounts the component on the planned mounting section when the planned mounting section of the board surface is at a predetermined position, and wherein the control device stores drawing information depicting the board surface on which the component is to be mounted by the component mounting device, compares a specific position in the stored drawing information with a specific position in image information of the board surface imaged by the imaging device, and recognizes that the planned mounting section of the board surface is not at the predetermined position when the specific position in the drawing information and the specific position in the image information are different.