Layered Forging Die Cavities for Faster Tooling and Repair
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Solution Overview
Problem
The conventional forging die manufacturing process is time-consuming and costly due to the difficulty in cutting and sourcing expensive tool steel, leading to high storage and maintenance costs, as well as the need for multiple dies to produce a single part.
Innovation Solution
Forging dies are assembled from individual layers rather than solid blocks, with each layer cut to form sections of the die cavity and stacked together, allowing for faster production and reduced material costs, and enabling easier maintenance by replacing worn layers rather than entire die halves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If forging dies are made by removing material from a solid block of tool steel, then the die cavity can be formed with high precision, but the manufacturing process becomes slow and time-consuming
Solution Approach 1:
The die half is divided into multiple separate layers that are stacked together to form the complete die cavity. Each layer can be cut and prepared independently, then assembled using fasteners. This segmentation allows parallel processing of multiple layers simultaneously, dramatically reducing manufacturing time while maintaining cavity precision through careful alignment and fastening of the layers.
2Strength
If forging dies are made from solid block of expensive tool steel, then the die has high strength and durability, but the material cost and sourcing difficulty increase
Solution Approach 1:
The die is constructed from multiple separate layers that can be sourced individually rather than requiring a large solid block of expensive tool steel. This reduces material costs and sourcing difficulty while maintaining overall die strength through the layered construction and fastening system.
Solution Approach 2:
The die employs a composite structure combining multiple layers of material (which may include tool steel layers for strength and other materials for cost-effectiveness) fastened together. This composite approach allows optimization of both strength requirements and material costs by selecting appropriate materials for each layer.
3Device complexity
If forging dies are made as solid blocks, then the die structure is simple, but storage and maintenance costs increase due to need for refurbishment
Solution Approach 1:
The die is divided into multiple removable layers fastened together, allowing individual layers to be inspected, removed, and replaced independently. When wear or damage occurs, only the affected layer needs to be refurbished or replaced rather than the entire die, significantly reducing maintenance costs and downtime despite the increased structural complexity of the layered assembly.
4Shape
If multiple different forging dies are used to produce a finished part, then the part can be manufactured with complex geometry, but the total cost and time increase
Solution Approach 1:
A single die half is divided into multiple layers that can be configured to form complex die cavity geometries. This eliminates the need for multiple separate dies while achieving the same complex part geometry, as the layered construction allows creation of intricate cavity shapes within a single die assembly, improving production efficiency.
Data Source
AI summary
Forging dies are formed from a plurality of layers stacked together to form an assembly, or laminate. Each respective layer may be cut to form a portion of a die cavity, and the layers may be stacked together such that the cut portions are aligned to form the die cavity. The layers are fastened together to form a first die half and/or a second die half of disclosed forging dies. Each layer may be selectively removable from the die half for maintenance and/or replacement. Disclosed forging dies may be formed of lower grade materials as compared to conventional forging dies, and the number and thickness of layers may be varied to accommodate the specific part geometry of the part being forged. Related methods of making said forging dies and using said forging dies to make parts are also disclosed.