Metal Sheet Sink Mark for Functional Element Positioning
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Solution Overview
Problem
The existing methods for joining functional elements with metal sheets in vehicle body manufacturing are time-consuming and costly due to the need for post-joining positional checks, which involve cumbersome measurements to ensure correct positional tolerance.
Innovation Solution
A method involving cold forming of the metal sheet to create a sink mark indicating the joining position, allowing for quick and simple visual or optical verification of the functional element's correct positioning within the sink mark, thereby reducing the need for extensive measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If positional check is performed after joining using measurement methods, then positional accuracy can be verified, but production time increases and costs rise
Solution Approach 1:
The sink mark is formed on the metal sheet before the joining process takes place. This preliminary marking indicates the exact joining position in advance, eliminating the need for time-consuming post-joining measurements. The position can be quickly verified by checking whether the functional element is correctly positioned within the sink mark area.
2Manufacturing precision
If detailed measurement is performed to check joining position, then positional tolerance can be ensured, but the complexity of the inspection process increases
Solution Approach 1:
The inspection process is simplified by extracting only the essential information needed for position verification. Instead of performing comprehensive measurements, the method only requires checking whether the functional element is positioned within the boundaries of the sink mark, which can be done through simple visual inspection or basic optical detection.
Solution Approach 2:
The sink mark serves as an intermediary element that bridges the joining process and inspection process. It provides a clear, pre-defined reference area that simplifies the inspection task by indicating exactly where the functional element should be positioned, eliminating the need for complex measurement and evaluation procedures.
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
This approach significantly reduces the time required for setting multiple functional elements by enabling rapid visual or automated verification of correct positioning, thereby streamlining the manufacturing process and lowering production costs.
Implementation Method 1
cold forming a metal sheet and thereby marking the metal sheet with a sink mark
Data Source
AI summary
In a method for joining a functional element with a metal sheet, with the functional element having an attachment part for attachment of a structure to the metal sheet, a cold forming process employed for the metal sheet is also used to mark the metal sheet with a sink mark by which a joining position of the metal sheet with the functional element is indicated. After the functional element is joined with the metal sheet at the joining position, the joining position is checked with respect to a position of the functional element inside of the sink mark.