Helical Grinding Tool Dressing With Deflection-Waveform Feedback
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Solution Overview
Problem
Existing grinding tool dressing methods fail to accurately dress helical grinding tooth surfaces due to inconsistencies in deflection waveforms caused by axial misalignment and non-uniform abrasive grain distribution on the dresser tooth surface.
Innovation Solution
A method and device that acquire deflection waveforms indicating positional deviations, use contact positional data to determine accurate dressing positions, and adjust rotation speeds based on predetermined forming quantities to dress the grinding tooth surfaces accurately, regardless of inconsistencies in the deflection waveforms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional dressing methods are used with meshed grinding tool and dresser gear, then the dressing process can be performed, but the dressing accuracy deteriorates due to deflection waveform inconsistencies caused by axial misalignment and non-uniform abrasive grain distribution
Solution Approach 1:
The patent measures the actual deflection waveform during the dressing process and uses this feedback information to calculate and apply correction amounts to the dresser gear's rotation speed, thereby compensating for axial misalignment and achieving accurate dressing despite waveform inconsistencies
Solution Approach 2:
The patent dynamically adjusts the rotation speed parameter of the dresser gear based on the measured deflection waveform characteristics, changing operational parameters in real-time to maintain dressing accuracy despite variations in abrasive grain distribution and alignment
2Manufacturing precision
If the rotation speed of the dresser gear is changed to compensate for deflection waveform inconsistencies, then dressing accuracy is improved, but the control complexity increases
Solution Approach 1:
The control system measures deflection waveforms in real-time and automatically calculates correction amounts, providing closed-loop feedback control that manages complexity through automation rather than manual intervention
Solution Approach 2:
The system performs self-correction by automatically calculating and applying rotation speed adjustments based on measured deflection characteristics, eliminating the need for external manual adjustment mechanisms
3Measurement precision
If the envelope passing through crests of the deflection waveform is used as contact positional data, then accurate contact position detection is achieved, but data processing complexity increases
Solution Approach 1:
The patent extracts only the envelope passing through the crests of the deflection waveform as the relevant contact positional data, filtering out unnecessary information and focusing processing on the critical features that indicate actual contact positions
Data Source
AI summary
A method for dressing a grinding tool includes acquiring information on a deflection waveform indicating a positional deviation of a first tooth surface for each rotation phase of a first rotating body, acquiring, as contact positional data indicating a position where the first tooth surface and the second tooth surface are in contact with each other, an envelope of the deflection waveform, the envelope passing through a plurality of crests of the deflection waveform located on a side closer to a second tooth surface, and dressing a grinding tooth surface with a dresser tooth surface by changing the rotation speed of the first rotating body based on a predetermined forming quantity and the contact positional data.