Gear Inline Testing With Offline Feedback Calibration
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Solution Overview
Problem
Current closed-loop systems for gear component manufacturing are inefficient due to delayed recognition of quality issues, high waste generation, and lack of comprehensive quality documentation, as individual components are measured infrequently, leading to increased reject rates and limited analysis of machine or process variables.
Innovation Solution
Implementing an automated method that includes inline testing followed by offline verification and adjustment, where gear components undergo a quick inline test, and if deviating from standards, they are transferred for offline measurement, allowing for continuous quality assessment and correction of the inline test process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If individual components are measured at relatively long intervals using a separate measuring device, then measurement time per component is reduced, but quality deterioration is recognized with delay and waste increases
Solution Approach 1:
The inline measuring device performs preliminary measurements on all components immediately after machining, before final quality assessment. This preliminary action enables immediate detection of quality deterioration while maintaining high measurement throughput, resolving the contradiction between speed and timeliness.
Solution Approach 2:
The patent introduces an intermediate inline measuring device that acts as a mediator between the machining process and final offline measurement. This intermediary performs rapid measurements on all components, enabling timely quality monitoring without bottlenecking production, while comprehensive offline measurements provide final verification.
2Loss of information
If comprehensive offline measurement is performed on all components, then quality documentation is complete, but measurement time and production cycle increase significantly
Solution Approach 1:
The measurement process is segmented into two parts: inline measurement for all components providing continuous quality documentation, and selective offline measurement only for components that fail inline criteria or require verification. This segmentation completes quality documentation while minimizing time loss by avoiding redundant measurements.
Solution Approach 2:
Instead of performing full comprehensive measurement on all components, the system performs partial measurement (inline) on all components and excessive measurement (offline) only when necessary. This partial action approach provides sufficient quality documentation without the time cost of measuring every component exhaustively.
3Productivity
If inline testing is used for all components, then throughput is maintained, but measurement precision and comprehensive quality analysis are reduced
Solution Approach 1:
Different measurement qualities are applied to different components based on inline test results. Components passing inline tests receive standard quality documentation, while components failing inline tests or requiring verification receive comprehensive high-precision offline measurement. This local quality approach maintains throughput while ensuring precision where needed.
Solution Approach 2:
The system uses feedback from offline measurements to continuously improve and calibrate the inline measurement device. Offline measurement results are fed back to adjust inline measurement parameters, ensuring that the faster inline method maintains adequate precision while preserving production throughput.
4Reliability
If frequent offline measurements are performed to improve quality monitoring, then quality recognition is timely, but production efficiency decreases due to measurement time
Solution Approach 1:
The inline measuring device performs preliminary quality assessment on all components immediately after machining, providing timely quality recognition without removing components from the production flow. This preliminary action enables immediate detection of quality issues while maintaining production efficiency, as measurements are integrated into the manufacturing process rather than performed separately.
Data Source
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AI summary
Method for the automated processing of gear components in an overall device (100), comprising the following steps: a) machining a gear component in a gear cutting machine (150), b) carrying out an inline test (iM) of the gear component machining, with the inline test (iM) providing at least one test value, c) performing a comparison of the at least one test value with at least one default value, d) if step c) is positive, then outputting the gear component as a good part (GT), e) if step c) is negative, then f) transferring the gear component to an offline measuring device (20; oM), g) performing an offline measurement (oM) of the gear component, the Offline measurement (oM) provides at least one measured value, h) Comparing the measured value with the test value, i) if step h) does not deviate from the measured value from the at least one test value, or if it only results in a deviation within a specified limit, then automated adjustment of the inline test (iM) is carried out.