Guided Retainer Pin-Bushing Assembly for Stamping Die Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The alignment of components in stamping dies is critical for quality and longevity but is challenging due to the need for precise axial and rotational movement, particularly in progressive dies, where misalignment can lead to damage under extreme loads.
Innovation Solution
The introduction of a guided retainer system that uses a pin with an enlarged portion and a bushing for sliding motion, along with a clamp and retainer plate, to securely couple the holder to the plate in a stamping die, allowing for precise motion transfer and alignment without the need for guide pins or retainers, thereby improving alignment and reducing assembly complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional guide pins and retainers are used to align components, then alignment precision is maintained, but device complexity and assembly difficulty increase
Solution Approach 1:
The patent combines the guide pin and retainer functions into a single integrated guided retainer component. The guided retainer includes a body with a guide pin extending from it and a retainer portion that works with a groove, eliminating the need for separate guide pins and retainers. This merging reduces the number of parts and simplifies assembly while maintaining alignment precision through the integrated structure.
Solution Approach 2:
The guided retainer serves multiple functions simultaneously: it provides guidance for alignment through the guide pin, retains components through the groove interaction, and ensures precise positioning. This multi-functional design replaces multiple specialized components with a single universal element that performs all necessary functions.
2Reliability
If multiple separate components (guide pins, retainers) are used for alignment, then reliability is maintained, but the space required within the die increases
Solution Approach 1:
By merging the guide pin and retainer into a single guided retainer component, the overall volume occupied by alignment mechanisms is reduced. The integrated structure eliminates gaps and redundant spaces between separate components while maintaining the functional integrity and reliability of the alignment system.
3Duration of action of stationary object
If precise alignment mechanisms are implemented, then component longevity is improved, but assembly time and complexity increase
Solution Approach 1:
The guided retainer is pre-assembled as an integrated unit with the groove feature built into the component design. This preliminary integration means that during final assembly, the guided retainer can be installed as a single piece rather than requiring separate assembly of guide pins and retainers, significantly reducing assembly time while preserving the precision and longevity benefits of proper alignment.
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 solution enhances the precision and reliability of stamping die operations by ensuring accurate alignment of components, reducing the risk of damage, and simplifying the assembly process while occupying less space within the die.
Implementation Method 1
a bushing received on and slidable relative to the pin into an abutting relationship with the offset
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A guided retainer for movably coupling a holder to a plate of a stamping die for use in a press including a pin having an enlarged portion. A bushing received on and slidable relative to the pin into an abutting relationship with the enlarged portion. When the guided retainer is assembled with the holder and the plate, the guided retainer is capable of transferring motion of the holder to the plate during movement of the press to an opened position for insertion of a workpiece into the stamping die. The pin includes a groove and a retainer plate that is received in the groove. A stamping die configured to be used in a press to modify a workpiece. The stamping die including a holder that is adapted to be coupled to the press. A plate that is spaced apart from the holder and a guided retainer.