Arcuate Tool Assembly Shear Force Redirection
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Solution Overview
Problem
Existing material processing machines face issues with the detachment of waste reducers due to shear forces, leading to undesirable tension in brazing and potential disengagement of processing tools during material reduction.
Innovation Solution
A multi-functional tool assembly with a cavity featuring an arcuate surface for the material reducer, which has a complementary arcuate surface to redirect or reduce shear force vectors, ensuring the tool remains engaged and effectively processes materials without disengagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a waste reducer is attached to the head by brazing, then the waste reducer can be securely fixed, but the shear forces cause the brazing to give way and the waste reducer becomes detached
Solution Approach 1:
The patent converts the harmful shear force into a beneficial compressive force by designing the tool assembly so that the waste reducer is pressed against the head during operation. The mounting structure uses compression rather than relying solely on brazing to resist shear forces, transforming the problematic lateral force into a force that enhances attachment reliability.
Solution Approach 2:
The tool assembly is divided into separate components (head, waste reducer, mounting structure) that can independently handle different force vectors. The mounting structure separates the function of resisting shear forces (through mechanical compression) from the function of brazing (which provides positional stability and thermal conduction).
2Productivity
If the processing tool is designed to reduce material, then material reduction is achieved, but the tool may disengage from the rotor assembly during operation
Solution Approach 1:
The tool assembly incorporates dynamic elements that allow for controlled movement and adjustment during operation. The mounting structure enables the tool to maintain engagement while accommodating operational forces, transforming a static attachment problem into a dynamically balanced system where the tool remains securely engaged despite material reduction forces.
3Productivity
If the waste reducer is subjected to shear forces during material reduction, then material can be effectively reduced, but the shear forces create tension in the brazing and cause detachment
Solution Approach 1:
The patent transforms the harmful shear force-induced tension into a beneficial compressive force system. By redesigning the mounting structure to use compression for attachment, the operational shear forces are converted into forces that press the waste reducer against the head, eliminating the tension problem while maintaining material reduction efficiency.
Data Source
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AI summary
A multi-functional tool assembly for a material processing machine includes a single tool including a head and a shaft integrally formed therein. The head has a cavity with an arcuate surface. The multi-functional tool assembly also includes a material reducer adapted to reduce material within the waste processing machine. The material reducer is disposed in the cavity and has an arcuate surface complementary to the arcuate surface of the cavity.