Vehicle Jig Coupling Mechanism for Welding Efficiency
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Solution Overview
Problem
Existing vehicle body assembling techniques require strong reference posts and clamp mechanisms to support the weight of upper and lower jigs, leading to a complex configuration that interferes with welding devices and reduces efficiency.
Innovation Solution
A vehicle body assembling method and device that couples an upper jig to a lower jig at reduced load points, allowing uniaxial rotation and three-dimensional coordinate fixation, with a conveying unit to minimize the load applied from the upper jig to the lower jig, simplifying the coupling configuration and reducing the number of coupling portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If strong reference posts and clamp mechanisms are used to support the weight of upper and lower jigs, then the structural strength is improved, but the device complexity increases and interference with welding devices occurs
Solution Approach 1:
The patent extracts the weight support function from the coupling mechanism by introducing a separate conveying unit. The upper jig's weight is now supported by the conveying unit during movement, allowing the coupling mechanism to focus only on positioning and coupling functions, thereby simplifying its configuration
Solution Approach 2:
The conveying unit acts as an intermediary that bears the load between the upper jig and the lower jig during the coupling process. This mediator allows the coupling mechanism to use lighter components since it doesn't need to support the full weight
2Strength
If strong reference posts and clamp mechanisms are used to support the weight of upper and lower jigs, then the structural strength is improved, but the welding operation efficiency decreases due to interference
Solution Approach 1:
The weight support function is extracted from the coupling mechanism and assigned to the conveying unit. This separation allows the coupling mechanism to use fewer and smaller components, reducing interference with welding devices and improving welding operation efficiency
Solution Approach 2:
The system is segmented into distinct functional units: the conveying unit handles weight support and movement, while the coupling mechanism handles positioning and coupling. This segmentation allows each unit to be optimized independently, with the coupling mechanism being more compact and less interfering
3Manufacturing precision
If the upper jig is coupled to the lower jig at multiple portions, then the positioning precision is improved, but the number of coupling components increases
Solution Approach 1:
The conveying unit serves as a mediator that provides stable support during the coupling process, allowing the use of fewer coupling portions. The conveying unit's support compensates for the reduced number of coupling points, maintaining positioning precision with a simplified coupling mechanism
Data Source
AI summary
Provided are a vehicle body assembling method and a vehicle body assembling apparatus which allow a simple configuration in the vicinity of the connecting portion between an upper jig and a lower jig and allow an increase in the efficiency of assembling work (welding work). A vehicle body assembling apparatus is equipped with a jig for supporting vehicle body components in a preassembled position, the jig comprising an upper jig and a lower jig which are connected to each other in at least two places. Each of the connection places is provided with a connecting means for fixing a three-dimensional coordinate position while allowing uniaxial turning. The vehicle body assembling apparatus is also equipped with a conveying means for conveying the upper jig which supports the vehicle body components, and reduces the load applied to the lower jig from the upper jig when connecting the upper jig to the lower jig.