Vibration Welding Groove Geometry for Weld Leg Alignment
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Solution Overview
Problem
Vibration welding technologies face challenges in achieving consistent and reliable bonding of components with tolerance variations, leading to misalignment and excessive weld flash due to the lack of efficient alignment and deformation management in the 'tongue and groove' design.
Innovation Solution
A vibration welding groove system with a groove region, transition region, and base region, featuring a tapering design that includes a depression and hump to guide and deform the weld leg, reducing misalignment and sacrificial region, thereby improving bonding and minimizing excess weld flash.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional tongue and groove interface is used for vibration welding, then the joining process is simple, but misalignment and excessive weld flash occur due to tolerance variations
Solution Approach 1:
The groove is pre-formed with specific geometric features (tapered walls, depression, hump) that automatically guide and position the weld leg before the welding process begins. This preliminary alignment structure compensates for tolerance variations and ensures consistent positioning during vibration welding.
Solution Approach 2:
Different regions of the groove have different geometric properties: the tapered walls provide guidance, the depression captures the weld leg, and the hump provides a stopping point. These localized geometric variations work together to achieve precise alignment and control weld flash.
2Manufacturing precision
If the groove depth is increased to accommodate tolerance variations, then alignment improves, but excessive material is removed and sacrificial region increases
Solution Approach 1:
The groove is divided into distinct functional regions: a tapered guidance region, a depression for weld leg capture, and a hump for positioning. This segmentation allows each region to perform its specific function efficiently, achieving alignment without requiring excessive groove depth that would increase sacrificial material.
Solution Approach 2:
The groove geometry parameters (taper angle, depression depth, hump height) are optimized to provide sufficient alignment capability while minimizing material removal. The specific dimensional relationships between these parameters ensure proper weld leg positioning with minimal sacrificial region.
3Ease of manufacture
If the groove geometry is simplified for ease of manufacture, then production cost decreases, but alignment and weld flash control capabilities are reduced
Solution Approach 1:
The groove geometry is designed to perform alignment and weld flash control functions during the molding process itself, without requiring additional machining or assembly steps. The tapered walls, depression, and hump are integrated into the basic groove structure, maintaining manufacturing simplicity while achieving reliable weld quality.
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
The system ensures consistent and reliable bonding by aligning and deforming the weld leg within the groove, reducing the sacrificial region and excess weld flash, thus enhancing the quality of the weld and accommodating tolerance variations.
Implementation Method 1
Vibration welding is a known manufacturing process used to join parts together
Implementation Method 2
the groove includes a shape configured to nudge the weld leg towards a center of the groove during joining
Data Source
AI summary
A vibration welding groove system may include a first component having a joining surface with a groove region, where the groove region comprises a groove formed in the joining surface. The first component includes a base region lacking the groove in the joining surface and a transition region located between the groove region and the base region. The transition region has a tapering of the groove to provide a smooth transition from the groove region to the base region. The vibration welding groove system may further include a second component having a weld leg extending from a main body, where the groove of the first component comprises a shape configured to nudge the weld leg towards a center of the groove during joining of the first component with the second component.