Electronic Torque Wrench Calibration Device
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Solution Overview
Problem
Electronic torque wrenches face issues with imprecise torque value and pivot angle measurements due to signal drift in electric circuits, leading to improper fastening of components and potential instrument failure.
Innovation Solution
An electronic torque wrench calibration device with a base, driving member, torque setting member, and dial plate is introduced, where the driving member overcomes a predetermined resistance to rotate, allowing users to verify the torque value and pivot angle against angular scale markings on the dial plate, enabling calibration and potential system reset.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If electronic torque wrench uses simple sensor and circuit, then device complexity is reduced, but measurement precision deteriorates due to signal drift
Solution Approach 1:
The calibration device performs preliminary calibration actions by providing known resistance values through the torque setting member before actual torque wrench operations. This preliminary calibration establishes reference points that compensate for signal drift, ensuring measurement precision without requiring complex internal compensation circuits in the torque wrench itself.
Solution Approach 2:
The calibration device acts as an intermediary system between the simple sensor/circuit in the torque wrench and the required measurement precision. By introducing a known resistance through the torque setting member and measuring the actual torque output, the calibration device mediates the gap between simple hardware and precise measurements, allowing correction of drift errors externally.
2Ease of manufacture
If electronic torque wrench uses simple sensor and circuit, then ease of manufacture is improved, but reliability deteriorates due to undetected signal drift
Solution Approach 1:
The calibration device implements a feedback mechanism by comparing the torque wrench's measured torque value against the known resistance value provided by the torque setting member. This feedback loop allows detection of signal drift and enables correction of measurement errors, thereby improving reliability while maintaining the simplicity of the original sensor and circuit design.
Solution Approach 2:
The calibration device enables the torque wrench to perform self-service calibration by providing a known resistance standard that the torque wrench can use to self-diagnose and self-correct measurement drift. This self-service capability improves reliability without requiring complex external calibration equipment or frequent manual intervention.
3Loss of time
If calibration is not performed, then loss of time is reduced, but manufacturing precision deteriorates due to improper fastening
Solution Approach 1:
The calibration device performs preliminary calibration actions by establishing known resistance values and reference pivot angles before actual torque wrench operations. This preliminary calibration ensures that subsequent fastening operations achieve the required manufacturing precision without requiring extensive calibration time during production, as the calibration can be performed once and reused.
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
The calibration device ensures accurate torque and pivot angle measurements, preventing improper fastening and instrument failure by allowing users to adjust and verify settings, ensuring smooth operation and extending the lifespan of electronic torque wrenches.
Implementation Method 1
The torque setting member provides the driving member with a predetermined resistance against a pivotal rotation
Data Source
AI summary
An electronic torque wrench calibration device is for calibrating a torque value and a pivot angle of an electronic torque wrench. The electronic torque wrench calibration device includes a base, a driving member, a torque setting member and a dial plate. One end of the driving member is driven by a electronic torque wrench, and the other end of the driving member is pivotally connected to the base. The torque setting member is disposed on the base. The torque setting member provides the driving member with a predetermined resistance against a pivotal rotation. The dial plate is pivotally disposed on a surface of the base and linked with the driving member. The dial plate includes a plurality of angular scale markings located on a surface of the dial plate.