Modular Pilot Assembly for Metal Forming Dies
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Solution Overview
Problem
Current metal forming dies are labor-intensive and costly to design, manufacture, and modify due to the need for custom, precision components and complex assembly processes, which increases the expense and time required for production and maintenance.
Innovation Solution
A modular pilot assembly for progressive metal forming dies that includes a cylindrically shaped pilot with a tapered nose and spring member, along with a stripper and retainer, allowing for precise location and easy installation of stock strips across multiple die stations, reducing the complexity and cost of die assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If custom, precision components are used in metal forming dies, then manufacturing precision is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The pilot assembly is divided into separate modular components including the pilot body, stripper, spring member, and retainer ring. These segmented components can be manufactured independently using standard processes and then assembled together, reducing overall device complexity while maintaining precision through standardized interfaces and modular design.
Solution Approach 2:
The pilot assembly is designed to perform multiple functions: locating the workpiece, guiding material flow, and stripping the formed part. By integrating these functions into a single modular assembly that can be applied across multiple die stations, the design reduces complexity compared to having separate custom components for each function, while maintaining the precision required for each operation.
2Manufacturing precision
If custom, precision components are used in metal forming dies, then manufacturing precision is improved, but manufacturing cost increases
Solution Approach 1:
By segmenting the pilot assembly into standardized modular components, each part can be manufactured using cost-effective standard processes rather than requiring expensive custom machining for each component. The modular nature allows for economies of scale and reduced tooling costs.
Solution Approach 2:
The modular pilot assembly components are designed to be replaceable and relatively simple to manufacture, allowing for cost-effective production. If a component wears or becomes damaged, only that specific component needs to be replaced rather than the entire die assembly, reducing long-term manufacturing and maintenance costs.
3Manufacturing precision
If custom, precision components are used in metal forming dies, then manufacturing precision is improved, but lead time increases
Solution Approach 1:
The segmented modular design allows components to be manufactured and prepared independently in parallel, reducing overall lead time. Standardized components can be pre-manufactured and stored, allowing for quick assembly when needed.
Solution Approach 2:
The modular components can be pre-assembled and pre-tested before being installed in the die set. This preliminary preparation reduces on-site assembly time and allows for faster die changeover and implementation.
4Manufacturing precision
If complex assembly processes are used in metal forming dies, then manufacturing precision is improved, but ease of operation increases
Solution Approach 1:
The modular segmented design simplifies installation by allowing components to be assembled in a standardized sequence. Each component has defined interfaces and mounting features that guide proper installation, reducing the complexity of the assembly process while maintaining precision through standardized tolerances and fit-up 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
The modular pilot assembly simplifies the installation and maintenance of metal forming dies, reducing production costs and time while ensuring precise alignment and efficient operation across multiple stations.
Implementation Method 1
a spring member having a generally hollow interior received over the medial portion of the pilot
Data Source
AI summary
A pilot assembly and method for metal forming dies has a generally cylindrical pilot with a stripper that strips stock from the pilot when metal forming dies diverge. The pilot assembly is secured to one die member by a fastener by itself or in combination with a window mount. A spring within the pilot assembly contacts the stripper to force the stripper to reciprocate when the dies are pulled apart. Thus, the pilot assembly helps locate the stock within the metal forming die while also having a stripper to help strip the stock from the pilot.