Cantilever Beam Traction Test Device Horizontal Offset
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Solution Overview
Problem
Existing traction force test devices for semiconductor welding firmness face challenges in accurately applying test forces without causing horizontal offset, which can damage nearby welding leads due to deformation and rotation of cantilever beam force sensors.
Innovation Solution
The implementation of a mechanism using inversely installed single-arm cantilever beams with opposite and equal horizontal displacements to neutralize horizontal offset, ensuring the test tool maintains a vertical attitude and avoids horizontal displacement during testing, utilizing two sets of cantilever beams to compensate for test force-induced deformations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a single cantilever beam force sensor is used to apply test force, then the test force can be applied to the welding lead, but the test tool rotates and causes horizontal offset that may damage nearby welding leads
Solution Approach 1:
The single cantilever beam force sensor is segmented into multiple cantilever beams (at least two) arranged in parallel. Each beam independently applies force through its own test tool, eliminating the rotation problem of a single beam while maintaining force application capability.
Solution Approach 2:
Multiple cantilever beams are merged into a unified force sensor structure where their individual test forces combine to achieve the required total test force on the welding lead, while their parallel arrangement prevents horizontal offset.
2Object-affected harmful factors
If multiple cantilever beams are used to prevent rotation, then horizontal offset is reduced, but the device complexity increases
Solution Approach 1:
The cantilever beams are arranged asymmetrically in parallel configurations (e.g., two beams side-by-side, or three beams in a triangular arrangement) that prevent rotational motion while maintaining structural simplicity and force application efficiency.
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 approach significantly reduces the risk of damaging un-tested welding leads by eliminating horizontal offset, enhancing the reliability and accuracy of traction force tests and maintaining the vertical attitude of the test tool, thus optimizing mechanical test performance and test results.
Implementation Method 1
The force sensor can deform whenever under stress, thus the magnitude of the test force can be identified according to the deformation of an elastic body
Data Source
AI summary
A method for eliminating the horizontal offset of a traction force test device and traction force test device thereof, the device comprising a substrate (300), a first single-arm cantilever beam (100) and a second single-arm cantilever beam (100′) which have the same structure. By employing an inverse horizontal displacement offset compensation structure, the invention completely overcomes the horizontal offset of the free end of the un-fixed single-arm cantilever beam, and achieves still better effect by suspending the test tool with two sets of inversely-installed cantilever beams which have the same structure and are arranged in the vertical direction.