Phasing Threaded Grinding Wheel with Acoustic Emission Fluid Sensor
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Solution Overview
Problem
Conventional phasing devices for gear grinding machines require complex configurations to precisely phase grinding wheels with both workpieces and dressers, as they rely on multiple AE sensors for contact detection, leading to inefficiencies and increased machinery complexity.
Innovation Solution
A phasing device using an acoustic emission fluid sensor to detect elastic waves generated by the grinding wheel, allowing for precise phase alignment by determining contact with gears or dressers through fluid jetting, simplifying the configuration and improving precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple AE sensors are used to detect contact between grinding wheel and both workpiece and dresser, then contact detection precision is improved, but device complexity increases
Solution Approach 1:
The single AE sensor is designed to perform multiple functions: detecting contact between the grinding wheel and the workpiece, and detecting contact between the grinding wheel and the dresser. By making the detection system universal, the patent eliminates the need for separate sensors for different detection tasks, thereby reducing device complexity while maintaining measurement precision.
Solution Approach 2:
The patent introduces fluid as an intermediary medium to transmit acoustic emission signals from the grinding wheel to the AE sensor. This intermediary approach allows the sensor to detect contact events more effectively without requiring direct physical contact or multiple sensors, simplifying the overall system configuration while improving detection capability.
2Reliability
If conventional AE sensor configuration is used for phasing, then contact detection is achieved, but machine configuration becomes complicated
Solution Approach 1:
The patent merges the detection functions for workpiece contact and dresser contact into a single AE sensor system. By combining these previously separate detection functions into one integrated sensor, the patent reduces the number of components and simplifies the sensor system configuration while maintaining the reliability needed for accurate phasing operations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise phasing of threaded grinding wheels with gears or dressers, reducing the complexity of the machine configuration and enhancing the precision of the grinding process, thereby improving the efficiency and accuracy of gear grinding operations.
Implementation Method 1
an acoustic emission fluid sensor which detects elastic waves generated in the threaded grinding wheel due to vibration or friction through fluid jetted to the vicinity of the threaded grinding wheel
Data Source
AI summary
A device for phasing a threaded grinding stone is phased with respect to a workpiece or a disk dresser prior to the engagement of the threaded grinding stone with the workpiece or with the disk dresser during grinding or dressing. In performing this phasing, it is detected, by means of an AE fluid sensor provided to a grinding stone head which rotatably supports the threaded grinding stone, whether the threaded grinding stone has had contact with the workpiece or the disk dresser. Subsequently, on the basis of the phase of the threaded grinding stone at the time when contact was detected, the threaded grinding stone is positioned in a phase where the aforementioned engagement is feasible.