Bolt-in Toolholder for Shredder Rotor Assembly
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Solution Overview
Problem
Existing shredder rotor assemblies with welded toolholders are prone to breaking and difficult to replace, leading to durability and maintenance issues.
Innovation Solution
A bolt-in toolholder assembly with a cylindrical rotor, pockets for toolholder placement, and a system of bolts for secure attachment, allowing for easy replacement and retrofitting of cutting tools in various patterns such as chevron or spiral.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If welded toolholders are used in rotor assemblies, then the toolholders can be securely attached to the rotor, but they are prone to breaking after periods of use and difficult to replace
Solution Approach 1:
The toolholder assembly is divided into separate components: the toolholder body and the cutting tool are connected via a removable bolt-in mechanism rather than being permanently welded. This segmentation allows the toolholder to be detached and replaced independently from the rotor, improving reliability while maintaining secure attachment during operation.
Solution Approach 2:
The attachment system transitions from a static welded joint to a dynamic bolted connection that can be easily assembled and disassembled. The bolt-in toolholder allows for quick replacement of cutting tools without removing the entire rotor assembly, combining secure attachment during use with ease of maintenance.
2Strength
If welded toolholders are used in rotor assemblies, then the toolholders can be securely attached to the rotor, but they are difficult to replace without removal of the rotor
Solution Approach 1:
The toolholder assembly is segmented into the toolholder body and cutting tool components connected by bolts. This allows the cutting tool to be replaced independently from the rotor assembly, dramatically improving ease of repair while maintaining secure attachment during operation.
Solution Approach 2:
The bolt-in toolholder design allows cutting tools to be pre-assembled with the toolholder body before installation on the rotor. This preliminary assembly simplifies the replacement process, as the complete toolholder-tool assembly can be quickly installed or removed as a unit without complex disassembly of the rotor itself.
3Strength
If multiple bolts are used to secure the toolholder to the rotor, then the attachment becomes more secure, but the device complexity increases
Solution Approach 1:
The bolt-in toolholder uses standard threaded fasteners that can be used across different toolholder and rotor configurations. The same bolt design secures both the toolholder to the rotor and the cutting tool to the toolholder, simplifying the overall system while maintaining secure attachment through multiple fastening points.
Data Source
AI summary
A bolt-in toolholder assembly for a shredding device includes a rotor having a substantially cylindrical shape, a plurality of pockets formed in the rotor and spaced apart preselected distances to form preselected patterns, a bolt-in toolholder.