Contactless Measuring Device for Axial Runout in Friction Welding
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Solution Overview
Problem
Existing friction welding devices lack effective means to ensure high-quality weld joints by detecting surface quality and axial runout, leading to potential incomplete or nonuniform plasticization and low-quality welds.
Innovation Solution
Incorporating contactless measuring devices on a pressure welding device that can detect surface quality and axial runout during the welding process, allowing for automated quality control and correction, and enabling the device to ensure proper alignment and positioning of workpiece parts before welding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If contactless measuring devices are added to detect surface quality and axial runout, then manufacturing precision and reliability are improved, but device complexity increases
Solution Approach 1:
The measuring device is integrated into the existing pressure welding device structure, allowing the same device to perform both welding operations and quality measurements. The measuring device can detect multiple parameters (surface quality, axial runout, true running) using a unified measurement system, reducing the need for separate specialized devices for each measurement type.
Solution Approach 2:
The patent employs contactless measuring devices that use optical or electromagnetic fields instead of mechanical contact to detect surface quality and axial runout. This substitution eliminates the need for physical contact probes, reducing mechanical complexity while improving measurement capability and preventing contamination of the workpiece.
2Productivity
If automated quality control and correction are implemented, then productivity and manufacturing precision are improved, but device complexity and cost increase
Solution Approach 1:
The measuring device provides real-time feedback on surface quality and axial runout during the welding process. This feedback is used to automatically adjust welding parameters or correct positioning errors, enabling closed-loop control that improves productivity and quality consistency without requiring complex manual intervention systems.
Solution Approach 2:
The measuring device performs quality checks before the welding process begins, allowing defects in surface quality or axial runout to be detected and corrected in advance. This preliminary detection prevents defective workpieces from entering the welding process, improving overall productivity by avoiding rework and scrap.
3Measurement precision
If measuring devices are integrated into the clamping devices, then measurement precision is improved, but ease of operation decreases
Solution Approach 1:
The measuring device is integrated with the clamping device structure, combining measurement and clamping functions in one unit. This integration ensures that measurements are taken from a fixed, stable reference frame that moves with the workpiece, improving measurement precision while maintaining ease of operation through automated measurement sequences.
Data Source
AI summary
A pressure welding device (1), especially a friction welding device, holds workpiece parts (2, 4) in clamping devices (6, 7) and axially moves the workpieces towards each other by means of a feed device (21). The pressure welding device (1) has a measuring device (8, 13), measuring in a contactless manner. The measuring device detects the surface condition and/or the concentricity and/or true running and/or the axial runout and/or radial runout in a front welding region (3, 5) of a workpiece part (2, 4).