Grinding Wheel with Embedded Strain Gauges for Force Measurement
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Solution Overview
Problem
Existing methods for controlling grinding force on precision rotary parts, such as bearings and gears, are inadequate in precision and accuracy, affecting the parts' quality and service life.
Innovation Solution
A grinding wheel with embedded tangential, axial, and radial strain gauges and a signal unit for real-time wireless transmission of grinding force measurements, allowing direct and accurate collection of grinding forces without affecting the wheel's rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If power conversion method is used to collect grinding force, then measurement can be obtained, but measurement precision and reliability are insufficient
Solution Approach 1:
The patent replaces the indirect power conversion method with direct mechanical measurement using strain gauges embedded in the grinding wheel base. The strain gauges directly detect mechanical deformation caused by grinding forces, providing more precise and reliable measurements compared to the indirect electrical power conversion approach.
Solution Approach 2:
The grinding wheel base serves multiple functions: it provides structural support for the grinding wheel, embeds strain gauges for force measurement, and integrates a signal unit for data processing. This multi-functional design allows the grinding wheel itself to be both a cutting tool and a measurement device, improving measurement reliability without requiring separate measurement equipment.
2Measurement precision
If strain gauges are embedded in grinding wheel base, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent merges the measurement function into the grinding wheel base by embedding strain gauges directly in its structure. The signal unit is also integrated within the grinding wheel base, combining multiple functions (structural support, force sensing, and signal processing) into a single integrated component, thereby reducing overall system complexity despite adding measurement capabilities.
Solution Approach 2:
The strain gauges are nested within the grinding wheel base structure, and the signal unit is nested within the grinding wheel base as well. This nested arrangement allows the measurement system to be compact and integrated without significantly increasing the external dimensions or overall complexity of the grinding wheel assembly.
3Adaptability or versatility
If multiple strain gauges are added for multi-directional measurement, then measurement comprehensiveness is improved, but device complexity increases
Solution Approach 1:
The patent segments the force measurement capability into three independent directional components using separate strain gauges for radial, tangential, and axial directions. Each strain gauge is independently mounted in its own groove, allowing for simplified individual installation and measurement of each force component while achieving comprehensive multi-directional measurement capability.
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 and reliable measurement of grinding forces, improving machining accuracy and service life by allowing direct contact force analysis and control of grinding parameters.
Implementation Method 1
the acquisition part includes tangential strain gauges, axial strain gauges, radial strain gauges and a signal unit for signal acquisition and wireless transmission; the tangential strain gauges and the axial strain gauges are embedded on the outer circumferential surface of the grinding wheel base along tangential direction and axial direction respectively, and the radial strain gauges are arranged in the signal unit mounting groove along radial direction
Data Source
AI summary
Disclosed is a grinding wheel for online measurement of a grinding force, including a grinding wheel part with a grinding wheel base, CBN abrasive sheets and grinding wheel cover plate, and an acquisition part with tangential, axial, radial strain gauges and a signal unit for signal acquisition and transmission. A concave side end face of the grinding wheel base is provided with a signal unit mounting groove, the grinding wheel cover plate is sealed with the concave side end face, and the CBN block abrasive sheets are bonded on an outer circumferential surface of the grinding wheel base; the tangential, axial and radial strain gauges are respectively arranged on the outer circumferential surface along tangential and axial directions and in the signal unit mounting groove along radial direction; signal output ends of the tangential, axial and radial strain gauges are respectively connected with an input end of the signal unit.