Balance Correction Conditions with Feedback for Rotating Workpieces
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Solution Overview
Problem
Existing methods for correcting unbalance in rotating bodies, such as turbine shafts, often result in a discrepancy between machining conditions and actual machining results, leading to a decrease in the number of works determined as good after balance correction machining.
Innovation Solution
A method and system that utilize pre- and post-correction balance information to derive and update correction conditions, incorporating factors like machining tool wear and measurement errors, to improve the accuracy of unbalance correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If correction conditions are set based on pre-correction balance information, then correction machining can be performed, but deviation between correction conditions and actual machining results occurs due to machining variations
Solution Approach 1:
The patent implements a feedback mechanism where post-correction balance information is fed back to update correction condition acquisition information. The system calculates correction results by comparing pre-correction and post-correction balance information, then uses these results to update the correction condition acquisition information for subsequent corrections. This closed-loop feedback system continuously improves the accuracy of correction conditions, reducing deviation and increasing the first run rate.
Solution Approach 2:
The patent performs preliminary acquisition of correction condition information before actual correction machining. The system pre-acquires correction conditions based on pre-correction balance information, then updates this preliminary information with correction results after machining. This preliminary action allows the system to prepare correction conditions in advance while maintaining the flexibility to refine them based on actual machining outcomes.
2Manufacturing precision
If correction conditions are updated using post-correction balance information, then deviation between correction conditions and actual machining results is reduced, but additional processing steps are required
Solution Approach 1:
The correction condition acquisition information serves multiple functions: it is used to derive correction conditions for current machining, stores historical correction data, and acts as a database for updating future correction conditions. This multi-functional design consolidates what could be separate complex systems into a unified information structure, reducing overall system complexity while maintaining high correction accuracy.
Solution Approach 2:
The system performs self-updating of correction condition acquisition information using its own operational data. By automatically calculating correction results from pre- and post-correction balance information and using these to update the correction condition acquisition information, the system serves itself without requiring external intervention or complex external control systems.
Data Source
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AI summary
A method of providing balance correction conditions includes a process of applying pre-correction balance information including a pre-correction unbalance amount and a pre-correction unbalance orientation of a work to correction condition acquisition information which derives a correction condition for correcting an unbalance of the work which is indicated by the pre-correction balance information, and obtaining correction conditions, and a process of updating the correction condition acquisition information using the pre-correction balance information and post-correction balance information including a post-correction unbalance amount and a post-correction unbalance orientation of the work machined based on the correction conditions.