Torque Wrench Test Bench With Tangent Force Alignment
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Solution Overview
Problem
Existing test benches for tightening tools, such as torque wrenches, inaccurately apply force to the wrench handle due to non-tangent application points, violating ISO standards and leading to measurement inaccuracies.
Innovation Solution
A test bench with a movable frame and adjustable guides that align the wrench handle with the force application point, ensuring tangent force application and using motorized cells to impart controlled torque and rotation directly to the tool head, while allowing compact and portable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a mechanical sliding structure with guides is used to impart force to the wrench handle, then the tightening tool can be tested, but the force application point may not be tangent to the wrench handle trajectory, violating ISO standards and leading to measurement inaccuracies
Solution Approach 1:
The test bench employs a movable frame that can be extended and positioned to dynamically adjust the alignment between the force application point and the wrench handle trajectory. This dynamic adjustment ensures tangent force application throughout the testing process, resolving the contradiction between measurement precision and ease of operation.
Solution Approach 2:
The patent introduces an intermediary alignment mechanism consisting of adjustable guides and a movable frame that mediates between the force application system and the wrench handle. This intermediary structure ensures proper tangent alignment while maintaining the functionality of the testing apparatus.
2Adaptability or versatility
If the test bench is designed with fixed dimensions to accommodate standard testing procedures, then measurements can be taken, but the device becomes less portable and adaptable to different wrench sizes
Solution Approach 1:
The test bench incorporates a movable frame with extension capabilities that can be adjusted to accommodate different wrench lengths and configurations. This dynamic structure provides adaptability for various tool sizes while maintaining relatively simple operation through standardized adjustment procedures.
Solution Approach 2:
The adjustable guides and movable frame create a universal testing platform that can accommodate multiple wrench sizes and types. This multi-functional design allows the same apparatus to test various tightening tools without requiring separate dedicated fixtures for each tool size.
3Adaptability or versatility
If the guides are made longer to accommodate wrenches with longer arms, then more tools can be tested, but the device becomes less portable and more complex
Solution Approach 1:
Rather than using fixed long guides, the patent employs a movable frame that can be extended only when needed for tools with longer arms. This dynamic extension capability provides the necessary adaptability for various tool lengths while maintaining a compact, portable configuration for routine testing of standard-sized tools.
Data Source
AI summary
A test bench for checking the correct functioning of a tightening tool, for example, a torque wrench, including a fixed frame, which determines a work surface on which one or more motorized cells are positioned provided with a coupling suitable for coupling with the tool head of a tightening tool, a movable frame connected to the fixed frame by a sliding element which allows the surface to be elongated along a longitudinal direction (X) of the bench for an adjustable length, the movable frame being equipped with an element for fixing the handle of the tightening tool to such movable frame, an electronic processing unit which controls these motorized cells, which is capable of imparting to the tool head of the tightening tool to be tested a rotation with predetermined values of tightening torque and angle of rotation.