Blank Etching Fixture With Movable Jig
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Solution Overview
Problem
The existing etching processes in the automotive industry are inefficient and prone to errors due to the manual positioning of etching screens on sheet metal blanks, leading to significant waste and prolonged etching times, as the free-hand method results in non-uniform patterns and frequent discarding of blanks.
Innovation Solution
A blank etching apparatus that includes a worktable with a movable jig and screen frame system, allowing precise and repeatable positioning of the etching screen relative to the blank, enabling accurate and uniform etching across the entire surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If free-hand positioning of the etching screen is used, then the etching process can be completed, but etching errors occur and the process is slow
Solution Approach 1:
A positioning jig with screen frame is introduced as an intermediary device between the operator and the etching screen. The jig includes a frame that receives the etching screen and positioning features that ensure accurate, repeatable placement on the blank, eliminating the need for free-hand positioning while maintaining operational simplicity
Solution Approach 2:
The positioning jig is designed to be self-aligning through its geometric features (sides parallel to blank edges, predetermined spacing). Once placed on the blank, the jig automatically ensures correct positioning of the etching screen without requiring complex measurement or adjustment procedures by the operator
2Reliability
If free-hand positioning of the etching screen is used, then the etching process can be completed, but etching errors occur frequently
Solution Approach 1:
The positioning jig serves as a reliable intermediary that guarantees consistent positioning of the etching screen across multiple uses. Its rigid structure and geometric constraints ensure that each etching operation produces uniform results, eliminating the variability and errors associated with manual positioning
Solution Approach 2:
The positioning jig is prepared in advance with predetermined spacing and alignment features built into its structure. This preliminary preparation ensures that when the jig is used, accurate positioning is achieved immediately without requiring time-consuming measurements or adjustments during the etching process
3Area of stationary object
If manual repositioning of the etching screen is performed many times, then the entire blank surface can be etched, but the process takes approximately eight hours
Solution Approach 1:
The positioning jig with screen frame acts as a mediator that enables rapid, repeatable repositioning of the etching screen. The jig's design allows the screen to be quickly removed and repositioned at predetermined locations across the blank, dramatically reducing the time required to cover the entire surface area compared to careful manual repositioning
Data Source
AI summary
A blank etching apparatus is provided that positions an etching screen relative to a blank. The blank etching apparatus includes a worktable having a table top and a base. The table top has a pair of lateral sides and a pair of longitudinal sides. A first jig is movable with respect to the table top along an x-axis. The first jig includes a first pair of lateral segments and a first pair of longitudinal segments. A screen frame is received between the first pair of longitudinal segments and the first pair of lateral segments of the first jig. The screen frame is moveable relative to the first jig and the table top along a y-axis. The screen frame receives and carries the etching screen and cooperates with the first jig to accurately and repeatably position the etching screen relative to the blank.