Pressed Joint Strength Measurement Device
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Solution Overview
Problem
Current methods for assessing the strength of pressed joints in assembled components are inadequate as they rely on visual inspection and post-assembly testing, which identifies defects after the product is completed, failing to determine if issues stem from poor joint quality or other assembly-related problems.
Innovation Solution
A device comprising a base with a seating and reversible pressure and fixation units, coupled to drives, that securely positions and applies force to the joint, using a guide system to ensure force transmission and incorporates a measuring unit to assess joint strength by comparing initial and final positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If visual inspection and post-assembly testing are used to assess joint strength, then the product can be completed and delivered, but defects are identified only after assembly, failing to determine if issues stem from poor joint quality
Solution Approach 1:
The device performs joint strength measurement immediately after pressing operation, before the product proceeds to final assembly. The measuring unit detects the position of the measured section right after the pressing element applies compression force, enabling early identification of poor joint quality without waiting for post-assembly testing.
Solution Approach 2:
A measuring unit with measuring elements acts as an intermediary between the pressing operation and final product assembly. The measuring elements detect the position of the measured section of the first mounting part, providing quantitative data about joint strength that bridges the gap between visual inspection and comprehensive post-assembly testing.
2Reliability
If comprehensive post-assembly testing such as vibration or noise testing is performed, then product quality can be verified, but defects are found in the finished product rather than their cause in the joint assembly
Solution Approach 1:
The joint strength measurement function is extracted from the complex post-assembly testing process and performed separately immediately after pressing. The device isolates the joint quality assessment from vibration and noise testing, allowing defects to be identified at their source without requiring the entire product assembly to be tested.
Solution Approach 2:
Joint strength measurement is performed as a preliminary step before final product assembly and comprehensive testing. By measuring the position of the measured section right after pressing, the device identifies joint quality issues early, preventing defective joints from progressing through complex assembly and testing processes.
3Productivity
If visual inspection only is used for joint control, then the inspection process is simple and quick, but it cannot accurately assess the strength and quality of the joint between mounting parts
Solution Approach 1:
The device replaces visual inspection with a mechanical measurement system. The measuring unit with measuring elements physically detects the position of the measured section of the mounting part, providing quantitative measurement of joint strength rather than relying on human visual assessment.
Solution Approach 2:
The measuring unit serves as an intermediary between the pressing operation and quality assessment. It provides objective, quantifiable data about joint strength by detecting position changes of the measured section, bridging the gap between simple visual inspection and comprehensive product testing.
Data Source
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AI summary
A device for measuring the strength of a pressed joint of two components of a part to be tested, which comprises a base (1) on which is fixedly mounted an insert bearing (2) provided with a recess (21) for receiving the part (7) tested and with at least one opening (22) for a pressure element (31) the opening (22) being arranged at the point of the measured section of the part (7) tested, whereby on the base (1) from one side of the insert bearing (2) is further reversibly displaceably mounted a pressure unit (3) provided with pressure elements (31) which is coupled to a pressure drive (62) to ensure the reciprocating movement of the pressure drive (62) to the insert bearing (2) so as to push the pressure element (31) to the measured section of the part (7) tested, whereas a fixation unit (4) is reversibly displaceably mounted on the base (1) from the other side of the insert bearing (2), the fixation unit (4) being coupled to a fixation drive (61) to ensure its reversible displacement to the insert bearing (2) in order to clamp the part (7) to tested in the recess (21) of the insert bearing (2) and the fixation unit (4) is also provided with a measuring unit (5) to measure the position of the measured section of the part (7) tested.