Vehicle Pillar With Arcuate Chamfer For One-Sided Welding
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Solution Overview
Problem
Current vehicle pillar manufacturing and assembly processes face inefficiencies and structural limitations, particularly in achieving robust and compact form factors while ensuring robustness against bending moments and manufacturing defects such as kinks.
Innovation Solution
The vehicle frame incorporates a pillar design with an upper member featuring perpendicularly extending flanges, a lower member with a chamfer and transition portion, and reinforcing brackets, allowing for one-sided welding and improved structural bracing, which enhances manufacturing efficiency and structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional vehicle pillar manufacturing and assembly processes are used, then manufacturing and assembly are performed with conventional methods, but manufacturing efficiency is reduced and assembly accessibility is limited
Solution Approach 1:
The pillar is divided into an upper member and a lower member that can be manufactured separately and then assembled together. The upper member includes upper flanges for connection to the roof, while the lower member includes lower flanges for connection to the side body member. This segmentation allows each component to be manufactured independently with optimized processes and assembled through one-sided welding access.
Solution Approach 2:
The pillar design incorporates a chamfer on the lower flange that creates an angled surface, enabling welding access from one side only. This dimensional modification to the flange geometry allows welders to access the welding area from a single direction, improving assembly accessibility and manufacturing efficiency without compromising structural integrity.
2Strength
If conventional pillar designs are used, then structural integrity is maintained with standard configurations, but resistance to bending moments is insufficient and structural robustness is reduced
Solution Approach 1:
The lower flange includes a chamfer with a curved surface that transitions between the lower surface and the side surface. This curved geometry distributes stress more effectively compared to sharp angles, enhancing the pillar's resistance to bending moments while maintaining structural robustness against manufacturing defects such as kinks.
Solution Approach 2:
The pillar design integrates multiple material orientations and structural configurations in the upper and lower members. The combination of horizontal and vertical flanges with reinforced connections creates a composite structural system that resists bending moments from multiple directions, improving overall strength without excessive complexity.
3Manufacturing precision
If standard pillar manufacturing methods are used, then production follows conventional processes, but manufacturing precision is reduced and structural integrity is compromised
Solution Approach 1:
The upper and lower flanges are designed with pre-formed connection structures that facilitate precise alignment during assembly. The flanges include built-in positioning features and standardized connection interfaces that ensure accurate placement before welding, maintaining manufacturing precision while simplifying the overall manufacturing process.
Data Source
AI summary
The present disclosure relates to a vehicle frame that includes a first pillar and a second pillar. The first pillar includes an upper member that has a first upper flange and a second upper flange. The first pillar also includes a lower member that extends outwardly from the second upper flange. The lower flange includes a chamfer and a transition portion, such that the chamfer has an arcuate shape that extends from the second upper flange to the transition portion. Further, the chamfer includes a first portion a second portion, such that the first portion and the second portion are angularly displaced with respect to the horizontal axis.