Gear Tooth Optical Measurement Around Machining Marks
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Solution Overview
Problem
Optical measurement of gear teeth with machining marks is impaired by varying probing angles and height positions of feed marks, leading to unreliable measurement results and the need for additional adaptations beyond existing methods.
Innovation Solution
A method that accounts for geometric features of machining marks, such as flank-specific positions, offsets, and spiral arrangements, to define the course of the measuring path and positions of measuring points during optical measurement, ensuring accurate and reliable measurement by adapting the measurement process to the specific machining marks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If optical measurement is performed on gear teeth with machining marks, then measurement speed is improved, but measurement reliability deteriorates due to varying probing angles and height positions of feed marks
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the optical measurement parameters (probing angle, measurement height position) to compensate for the varying geometry of machining marks. The system modifies measurement parameters based on detected feed mark characteristics, ensuring consistent measurement quality across different tooth flanks while maintaining high measurement speed.
Solution Approach 2:
The patent implements feedback by using the detected geometric features of machining marks (peak/valley positions, offset values) to adjust subsequent measurement operations. The system continuously monitors measurement data quality and uses feedback loops to correct for variations in probing angles and height positions, thereby maintaining measurement reliability throughout the measurement process.
2Device complexity
If traditional optical measurement is used without adapting to machining marks, then device complexity is reduced, but measurement precision deteriorates due to falsified results from feed marks
Solution Approach 1:
The patent applies preliminary action by first detecting and characterizing the machining marks (determining peak and valley positions, offset values) before performing the actual precision measurement. This preliminary characterization allows the system to plan and execute measurements that avoid problematic areas or compensate for their influence, thereby maintaining high measurement precision without requiring complex real-time adjustments during measurement.
Solution Approach 2:
The patent segments the measurement process into distinct phases: detection of machining mark geometry, analysis of peak and valley positions, determination of offset values, and execution of adapted measurements. This segmentation allows each phase to be optimized independently, maintaining overall system simplicity while achieving high measurement precision through coordinated execution of segmented tasks.
3Reliability
If the measuring path is adapted to account for machining marks, then measurement reliability is improved, but the number of additional measuring movements increases
Solution Approach 1:
The patent applies local quality by adapting the measurement approach only in the specific local regions where machining marks affect measurement accuracy. Instead of modifying the entire measurement path uniformly, the system selectively adjusts measurement parameters and path only in areas with significant feed mark influence, thereby improving measurement reliability while minimizing additional measurement movements and time loss.
Data Source
AI summary
A method including the following steps of: providing a component, wherein the component has a gearing, wherein tooth flanks of the gearing have machining marks, determining at least one geometric feature of the machining marks, such as the height difference of the peaks and valleys, the flank-specific positions of the peaks and valleys, the offset or the like; carrying out an optical measurement of the gearing of the component, wherein a course of a measuring path for the optical measurement and/or wherein positions of measuring points for the optical measurement are defined taking into account the geometric feature of the machining marks and/or wherein an evaluation of measured values of the optical measurement is carried out taking into account the geometric feature of the machining marks.