High-Speed Tension Testing Machine Grip Slippage Prevention
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Solution Overview
Problem
High-speed tension testing machines experience positional deviations due to slippage between the movable side grip tool and the support member during high-speed movements, leading to errors in tension test results.
Innovation Solution
The high-speed tension testing machine incorporates a configuration where the support member and the movable side grip tool are in surface contact, utilizing a stepped shape on the tool and a split groove structure on the support member to prevent slippage, ensuring reliable contact even at high speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the movable side grip tool is moved at high speed to achieve high-speed tension testing, then the testing speed is improved, but the movable side grip tool and support member may slip from each other due to inertial force, resulting in positional deviation and measurement errors
Solution Approach 1:
The support member is designed with a curved outer peripheral surface that fits into a corresponding curved groove on the movable side grip tool. This curved interface provides continuous surface contact between the support member and the movable side grip tool, preventing slippage during high-speed movement by distributing inertial forces across the curved contact surface rather than relying on point or line contact.
2Strength
If a split groove structure with screw holding function is used to connect the support member and movable side grip tool, then the connection strength is improved, but the complexity of the structure increases
Solution Approach 1:
The support member integrates multiple functions into a single component: it provides mechanical support for the displacement meter, features a curved groove for surface contact connection to prevent slippage, and includes a split groove structure with screw holding capability for secure attachment. This merging of support, connection, and locking functions into one component reduces overall structural complexity while maintaining connection strength.
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
This configuration effectively prevents slippage between the movable side grip tool and the support member, maintaining accurate positional alignment and reducing errors in high-speed tension tests.
Implementation Method 1
The movable body is composed of a pipe made of a conductor, and the fixed body is composed of a coil. The displacement meter has a configuration for detecting change of the inductance of the coil caused by movement of the movable body to calculate elongation of the test piece.
Data Source
AI summary
A high-speed tension testing machine is provided for reliably preventing slippage between a movable side grip tool and a support member even when the movable side grip tool is moved at high speed. The support member that supports a movable body of a displacement meter has an end part on the side opposite to the movable body, and the end part has a split groove structure for surrounding a small-diameter part of the movable side grip tool and has a structure for holding the small-diameter part of the movable side grip tool with function of a screw. Thus, a surface of the support member on the side of the movable side grip tool is in surface contact with a surface of a large-diameter part, constituting a step part, on the side of the support member, so as to prevent slippage between the movable side grip tool and the support member.