Bushing Dovetail Locking via Progressive Die Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for producing bushings using progressive die stamping are limited in creating curved or rounded items and require multiple industrial operations, lacking simplicity and modularity, especially when adapting to varied sizes and types of bushings.
Innovation Solution
The use of a progressive die stamping method that involves a carrying web with alignment guides and embosses, where a regular shape male dovetail is inserted into an irregular shape crenellated female opening, and subsequently punched to lock in place, allowing for efficient production of bushings with adapted dovetails on a progressive stamping machine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional progressive die stamping is used for bushing production, then manufacturing speed is improved, but the ability to create curved or rounded items is limited
Solution Approach 1:
The bushing production process is divided into multiple stations within the progressive die system, with each station performing a specific operation. The bushing itself is segmented into a body portion and a dovetail portion, allowing the body to be formed with curved/rounded shapes while the dovetail remains flat for stamping operations. This segmentation enables the progressive die to manufacture curved bushings by processing different portions of the workpiece at different stations.
2Manufacturing precision
If multiple industrial operations are used for bushing production, then manufacturing precision is improved, but process complexity increases
Solution Approach 1:
Multiple stamping operations that would traditionally be performed separately are merged into a single progressive die system. The die integrates punching operations to create alignment guides, embossing operations to form the dovetail, and cutting operations all within one continuous process. This merging maintains manufacturing precision through consistent tooling while reducing the number of separate industrial operations and equipment needed.
Solution Approach 2:
Alignment guides are punched and embosses are created at preliminary stations before the final dovetail formation and cutting operations. This preliminary action ensures proper positioning and alignment of the metal strip throughout the progressive die process, maintaining manufacturing precision while allowing subsequent operations to proceed efficiently in sequence.
3Strength
If conventional dovetail designs are used, then structural strength is improved, but the locking mechanism complexity increases
Solution Approach 1:
The dovetail design uses asymmetric geometry where the dovetail portion has a specific shape that complements its mating feature. The asymmetric design provides inherent mechanical locking through the geometry itself, eliminating the need for additional locking mechanisms or complex assembly steps. The asymmetric shape ensures proper orientation and secure engagement while maintaining structural strength.
Data Source
AI summary
This disclosure relates to bushings produced with adapted dovetails for production on a carrying web of a progressive stamping machine at a plurality of stations. The bushing includes a regular shape male dovetail inserted into an irregular shape crenellated female opening at the conclusion of a plurality of operations at stations on a progressive stamping machine. Once the bushing is bent in shape, in a subsequent step, the regular shape male dovetail is punched to lock in place into the irregular shape crenellated female opening.