Torque Tester Feedback for Electronic Wrench Calibration
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Solution Overview
Problem
Existing torque wrenches, particularly electronic ones, lack effective calibration methods to ensure accurate torque application and pretensioning, which is crucial for assembling critical components.
Innovation Solution
A torque tester apparatus that engages with an electronic torque wrench, detects applied torque and its rate of change, and provides real-time feedback to guide operators to achieve the target torque value and rate, facilitating calibration through visual, auditory, or haptic means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If electronic torque wrenches are used to provide precise torque measurement and control, then torque application accuracy is improved, but calibration reliability deteriorates due to lack of effective calibration methods
Solution Approach 1:
The torque tester provides real-time feedback to the operator during calibration by displaying the current torque value and comparing it to the target torque value. This feedback mechanism enables the operator to adjust the applied torque to achieve the desired calibration target, thereby improving calibration reliability while maintaining the precision benefits of electronic torque wrenches.
Solution Approach 2:
The system performs preliminary actions by automatically detecting the applied torque and calculating the rate of change before the operator completes the calibration procedure. This preliminary detection and analysis enables the system to provide timely guidance and notifications, ensuring accurate calibration without requiring complex manual procedures.
2Manufacturing precision
If calibration procedures require increasing torque to a target value at a specific rate, then calibration precision is improved, but operator difficulty increases due to complex control requirements
Solution Approach 1:
The torque tester continuously monitors the applied torque and provides real-time feedback to the operator through visual displays and notifications. This feedback shows the operator how close they are to the target torque value and the required rate of change, making it easier to achieve precise calibration without requiring complex manual control.
Solution Approach 2:
The system performs self-service by automatically detecting the applied torque, calculating the rate of change, and generating guidance notifications without requiring complex manual intervention. The operator simply needs to apply torque while the system handles the measurement, comparison, and guidance generation, reducing operator burden while maintaining precision.
3Measurement precision
If real-time torque detection and rate-of-change monitoring are implemented, then calibration accuracy is improved, but device complexity increases
Solution Approach 1:
The torque tester is designed as a multi-functional device that can both detect the applied torque and calculate its rate of change using the same sensor and processing system. This universal approach allows the system to perform multiple measurement functions without requiring separate complex systems for each function, thereby improving calibration accuracy while limiting the increase in overall device complexity.
Data Source
AI summary
A method is provided for calibrating an electronic torque wrench (100) engaged with a torque tester (302), according to a specified calibration procedure that includes increasing an applied torque to a target torque value, and a threshold time rate of change of the applied torque. The method includes detecting the applied torque produced from a rotational force applied by an operator to the electronic torque wrench (100). The method includes, as the applied torque is detected, determining a torque value of the applied torque, and a time rate of change of the applied torque. The torque value and the time rate of change are compared to respectively the target torque value and the threshold time rate of change. And a notification is output to guide the operator in the rotational force applied by the operator, and thereby the applied torque produced from the rotational force.