Component Mounter Holder Allocation for Recovery Accuracy
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Solution Overview
Problem
In component mounters, the calibration values set for constituent devices may not be effective during recovery processes, leading to reduced mounting accuracy due to different operational conditions compared to error-free operations.
Innovation Solution
The component mounter is configured with a moving table, multiple holders, a mounting head, and a mounting control section that executes mounting operations using a designated holder allocated to each mounting position, ensuring consistent mounting conditions and applying correction data for improved accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the mounting head operates quickly to reduce required time in recovery process, then productivity is improved, but mounting accuracy is reduced because calibration values do not act appropriately
Solution Approach 1:
The system performs preliminary identification of the holder allocated to the target mounting position before executing the recovery mounting operation. By determining which holder (e.g., first holder or second holder) is allocated to the target position in advance, the system ensures that the appropriate calibration values are applied beforehand, allowing for accurate mounting even when operating quickly to improve productivity.
2Reliability
If a recovery process is executed to mount a component anew after an error, then reliability is improved, but mounting accuracy is reduced due to different operational conditions from the mounting process
Solution Approach 1:
The system changes the operational parameters in the recovery process to match those of the original mounting process. Specifically, it identifies and uses the same holder that was allocated to the target mounting position during the mounting process, ensuring that the same calibration values and operational conditions are applied. This parameter alignment ensures that mounting accuracy is maintained even when executing recovery operations after errors occur.
Data Source
AI summary
The component mounter includes a mounting control section that controls a mounting operation for a component by the mounting head based on a control program to execute a mounting process. In a recovery process of attempting to mount a component anew with a mounting position related to the mounting operation as a target position in a case where an error has occurred in the mounting operation, the mounting control section executes the mounting operation for the component by using a designated holder that is one of the multiple holders allocated to the target position in the mounting process as the designated holder.