Stud Holder Tongue Force Testing for Wear Detection
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Solution Overview
Problem
Existing stud welding devices face challenges in accurately detecting stud holder wear and damage, leading to suboptimal welding quality, as current sensor-based solutions are costly, cumbersome, and difficult to implement, and optical controls are limited in detection timing and environmental applicability.
Innovation Solution
A method using a testing tool with a triangular washer to measure the deviation force of stud holder tongues, allowing for early detection of wear and enabling automated decision-making for replacement or adjustment, which can be integrated with existing welding devices without modification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensor equipment (strain gauges) is installed on the stud holder to detect wear, then detection capability is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces complex sensor-based detection systems with a simple mechanical testing tool that applies force to the stud holder tongues. Instead of using strain gauges or other electronic sensors that require assembly and calibration, the invention uses a purely mechanical approach where a testing tool applies known forces and measures the resulting displacement or force required to achieve a specific deflection, thereby detecting wear through mechanical response characteristics.
2Measurement precision
If optical control is used to detect stud holder faults, then non-contact detection is achieved, but detection timing is delayed and environmental limitations arise
Solution Approach 1:
The patent implements preliminary detection by measuring the mechanical properties of the stud holder tongues before actual welding operations begin. The testing tool applies forces to the tongues and measures their response, detecting wear or damage before they affect welding quality. This proactive approach allows for early intervention and replacement of worn components, preventing faults rather than detecting them after they occur.
3Reliability
If frequent inspection of stud holder condition is performed, then welding quality is maintained, but production time is lost
Solution Approach 1:
The patent extracts the inspection function from the welding process itself, allowing the stud holder to be tested independently and quickly. The testing tool can rapidly apply forces and measure tongue response without requiring the full welding sequence to be executed. This separation enables frequent, rapid inspections that maintain welding quality while minimizing impact on production throughput.
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
Enables early detection of stud holder wear, ensuring accurate welding perpendicularity and quality, while being easily implementable in various environments and compatible with existing equipment, facilitating automated processes.
Implementation Method 1
measuring a testing force required to deviate the tongues from a reference position
Data Source
Figure 1~2
Figure 3~4
AI summary
Arrangement (22) and method for controlling the condition of a stud holder (10) comprising the step of: - providing a stud holder (10) extending along a longitudinal axis (X) and comprising a plurality of tongues distributed around the longitudinal axis (X) and forming a recess (18) adapted to receive a stud for its welding to a workpiece; - providing a testing device comprising a testing tool (26) and a sensor adapted to measure a testing force of the testing tool (26); - arranging the stud holder (10) and the testing tool (26) relative to each other such that a deflection of at least one tongue is performed by the testing tool (26); - measuring the testing force for deviating the tongue; - determining the condition of the stud holder (10).