Torque Screwdriver Sensing for Simultaneous Torque and Angle
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Solution Overview
Problem
Existing torque application tools lack the ability to simultaneously measure and ensure accurate application of torque and angle, leading to potential under-tightening or over-tightening of fasteners, which can result in component disengagement or damage.
Innovation Solution
A torque application tool equipped with a multi-axis gyroscope and torque sensor that allows for simultaneous or sequential measurement of torque and angle, using algorithms to detect breakaway torque and residual torque, and perform error proofing to ensure proper fastener tightening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If torque application tools are used to tighten fasteners, then the fastening process can be performed, but accurate simultaneous measurement of torque and angle is not achieved, leading to potential under-tightening or over-tightening
Solution Approach 1:
The patent combines a torque sensor and a multi-axis gyroscope into a single integrated measurement system within the torque application tool. This merging of measurement functions allows simultaneous acquisition of both torque and angle data, resolving the contradiction by enabling precise measurement of both parameters without requiring separate measurement devices or procedures.
Solution Approach 2:
The torque application tool is equipped with multi-functional capabilities including torque measurement, angle measurement via gyroscope, data logging, and real-time display. This universal tool can perform multiple functions (tightening, measuring torque, measuring angle, monitoring progress) simultaneously, eliminating the need for separate specialized devices and ensuring reliable fastening through comprehensive measurement.
2Reliability
If torque measurement is made while tightening components, then under-tightening or over-tightening can be prevented, but the complexity of the tool increases with additional sensors and measurement systems
Solution Approach 1:
The torque sensor and multi-axis gyroscope are merged into a single integrated measurement system with a unified controller that processes both torque and angle data. This consolidation reduces the overall structural complexity compared to having separate independent measurement systems, while maintaining reliable torque application through combined measurement capabilities.
Solution Approach 2:
The tool includes an integrated controller that automatically processes measurement data from both the torque sensor and gyroscope, performs calculations, and provides real-time feedback without requiring external measurement equipment or manual measurement procedures. This self-service capability maintains reliability while managing complexity through automation.
3Measurement precision
If a multi-axis gyroscope and torque sensor are integrated into the tool, then simultaneous measurement of torque and angle is achieved, but the weight and size of the tool increase
Solution Approach 1:
The patent employs miniaturized sensor technologies including thin-film torque sensors and compact multi-axis gyroscope designs that reduce the physical footprint and weight of the measurement components. These advanced sensor technologies enable simultaneous torque and angle measurement while minimizing the impact on tool weight, making the additional measurement capabilities practical for hand-held applications.
4Ease of operation
If real-time data logging and display are implemented, then user feedback is provided for accurate fastening, but the device complexity and power consumption increase
Solution Approach 1:
The data logging and display system operates in a periodic manner, updating the display at optimized intervals during the fastening process rather than continuously. The controller logs measurement data at key points in the tightening cycle and provides periodic visual feedback to the user. This periodic operation reduces power consumption compared to continuous high-resolution display updates while still providing sufficient real-time feedback for accurate fastening.
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
Ensures secure fastening by accurately applying the desired torque and angle, preventing under-tightening or over-tightening, and providing real-time data logging and display for user feedback.
Implementation Method 1
a gyroscope configured to measure amounts of angular rotation of the drive
Implementation Method 2
a torque sensor configured to measure amounts of torque applied by the drive to a work piece
Data Source
AI summary
The present invention relates to torque application tools, such as an electronic torque screwdriver, with a multiple axis gyroscope (such as a 3-axis gyroscope or other type of gyroscope) and torque sensor that allows for simultaneous or sequential measurement of torque and angle around the axis of the tool. Targets for torque and angle measurements may be used to create algorithms to detect breakaway torque, residual torque, or to perform error proofing to ensure unique fasteners are tightened.