Interchangeable Threaded Rod Cutting Dies for Multi-Size Precision
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Solution Overview
Problem
Existing threaded rod cutting machines require two unique dies for each size of threaded rod, limiting versatility and increasing manufacturing and inventory costs, as fixed and moveable dies are not interchangeable.
Innovation Solution
Designing dies with polyhedral shapes and threaded arcuate recesses that allow for interchangeable use, where the first die is stationary and the second die is moveable, with threads forming a discontinuous or continuous helical path depending on the rod size, and incorporating a fastener receiver to ensure correct orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If two unique dies are manufactured for each size of threaded rod, then cutting precision for each size is maintained, but device complexity and inventory requirements increase
Solution Approach 1:
The die is designed with multiple threaded arcuate recesses of different sizes on its side faces, allowing a single die to cut multiple sizes of threaded rods. The die body includes at least a first side face and a second side face, where each side face defines a threaded arcuate recess with different dimensions, enabling the same die to accommodate various rod diameters while maintaining cutting precision
Solution Approach 2:
Instead of creating different dies for each rod size, the invention adds dimensional variety to a single die by incorporating multiple side faces with different threaded recesses. This transforms the die from a single-function component to a multi-function component by utilizing the spatial dimension of the die body to accommodate multiple recess configurations
2Manufacturing precision
If fixed and moveable dies are made non-interchangeable, then cutting performance is optimized, but adaptability to different rod sizes decreases
Solution Approach 1:
Both the fixed die and moveable die are designed with the same polyhedral structure containing multiple threaded arcuate recesses of different sizes. This allows either die to be interchangeably positioned on the rod and to cut various sizes of threaded rods, maintaining optimized cutting performance while achieving full interchangeability between fixed and moveable positions
Solution Approach 2:
The invention merges the functionality of multiple specialized dies into a single universal die design. By combining multiple threaded recesses of different sizes into one die body, the fixed die and moveable die become identical in structure and interchangeable in function, eliminating the need for separate specialized dies for each position and rod size
3Manufacturing precision
If multiple specialized dies are maintained in inventory, then cutting accuracy is ensured, but manufacturing cost and storage requirements increase
Solution Approach 1:
A single die can cut multiple sizes of threaded rods by incorporating multiple threaded arcuate recesses of different sizes on its side faces. This eliminates the need to manufacture and maintain multiple specialized dies in inventory, reducing die quantity requirements while preserving cutting accuracy for various rod sizes
Solution Approach 2:
Instead of discarding or replacing dies when switching between rod sizes, the invention allows the same die to be reused for different rod sizes by selecting the appropriate threaded arcuate recess. This recovers the utility of each die across multiple applications, reducing inventory needs and manufacturing costs
Data Source
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AI summary
First and second dies (18, 20) can be coupled to a pair of arms (74, 79) on a threaded rod cutting machine (10). The first die (18) has a body (101) with a front face (102), a rear face (104), a side face (106a-106d) extending between the front face (102) and the rear face (104), and a first threaded recess (114a) in the first side face (106a) and configured to receive a threaded rod (120) to be cut. Crests (124) and troughs (126) of the first thread (116a) are aligned with troughs (154) and crests (152) of the threaded rod (120) when the first die (18) engages the rod (120). The second die (20) has a body (101) with a front face (102), a rear face (104), a side face (106a-106d) extending between the front face (102) and the rear face (104), and a second threaded recess (114a) in the side face (106a) and configured to receive the threaded rod (120). Crests (124) and troughs (126) of the second thread (116a) are axially offset from troughs (154) and crests (152) of the threaded rod (120) when the second die (20) engages the rod (120).