Gear Tooth Flank Correction Using Load-Weighted Evaluation Areas
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for machining and measuring tooth flanks in gear cutting processes do not effectively prioritize and correct deviations in heavily loaded areas, leading to suboptimal correction results due to equal treatment of all areas, which can compromise heavily loaded regions.
Innovation Solution
A method that distinguishes between different evaluation areas on the tooth flank, allowing for varying permissible deviations and weightings based on the expected operating loads, enabling targeted correction and optimization of the gear cutting process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If all areas of the tooth flank are treated equally during correction, then the correction process is simple and uniform, but the heavily loaded areas do not receive sufficient correction priority, resulting in compromised performance
Solution Approach 1:
The patent applies local quality by differentiating correction requirements across different evaluation areas of the tooth flank. Heavily loaded areas (first evaluation area) are assigned stricter permissible deviations and higher weightings, while non-load-bearing areas (second evaluation area) receive more lenient treatment. This localized differentiation ensures that correction resources are prioritized where they are most needed without unnecessarily complicating the overall process.
Solution Approach 2:
The tooth flank is segmented into multiple evaluation areas based on their functional importance and load-bearing characteristics. The first evaluation area encompasses heavily loaded regions requiring tight tolerances, while the second evaluation area includes non-critical regions. This segmentation allows the correction process to treat different areas differently, improving precision for critical areas without uniformly increasing complexity across the entire tooth flank.
2Manufacturing precision
If tighter tolerances are applied to all areas of the tooth flank, then overall quality is improved, but the correction potential for heavily loaded areas is not fully utilized and non-load-bearing areas receive unnecessary correction
Solution Approach 1:
Instead of applying uniform tolerances across the entire tooth flank, the patent implements local quality by assigning different permissible deviation values to different evaluation areas. The first evaluation area (heavily loaded) receives tighter tolerances to maximize correction potential where it matters most, while the second evaluation area (non-load-bearing) receives more lenient tolerances, avoiding wasteful correction efforts in areas that do not require high precision.
Solution Approach 2:
The patent changes the parameter of permissible deviation based on the location and functional importance of different tooth flank areas. By adjusting the permissible deviation parameter locally rather than globally, the system optimizes the use of correction potential, applying strict control only where necessary for performance while allowing more flexibility in non-critical areas.
3Productivity
If average deviations are used for correction without area differentiation, then the correction process is straightforward and quick, but heavily loaded areas may be compromised despite meeting overall tolerance requirements
Solution Approach 1:
The patent maintains operational efficiency while improving reliability by applying local quality principles to the correction process. Different evaluation areas are assigned different weightings and permissible deviations, allowing the system to quickly identify and prioritize correction needs in heavily loaded areas without significantly increasing process complexity. The weighted evaluation enables rapid determination of which areas require attention while ensuring critical areas receive appropriate correction priority.
Data Source
AI summary
A method for machining and measuring workpieces includes: machining a workpiece by a gear cutting process, wherein a tooth flank of the workpiece is produced or machined; measuring an actual geometry of the tooth flank produced by the gear cutting process by a measuring process; determining a deviation of the actual geometry from a predetermined nominal geometry of the tooth flank; determining a corrected gear cutting process for at least partially reducing the deviation; and machining the workpiece and/or a further workpiece by the corrected gear cutting process. The determination of the corrected gear cutting process for at least partial reduction of the deviation has the specification that a distinction is made between first and second evaluation areas of the tooth flank, wherein first and second permissible deviations of the actual geometry from the nominal geometry is specified for the evaluation areas of the tooth flank, respectively.