Conical Mill Disc Assembly With Rounded Grooves for Wear Control
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Solution Overview
Problem
Existing grinding devices experience wear-related enlargement of the grinding gap at the radial web edges or groove bases, leading to inefficient grinding and increased maintenance costs due to the need for replacement or servicing.
Innovation Solution
The design incorporates disks with frustoconical or double conical shapes, featuring rounded radial grooves and webs to minimize wear, ensuring a consistent grinding gap and reduced risk of mechanical damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional radial ribs with pointed edges and V-shaped grooves are used, then the grinding mechanism can be manufactured with simpler geometry, but wear-related enlargement of the grinding gap occurs at the radial web edges or groove bases
Solution Approach 1:
The patent applies curvature by replacing the pointed edges and V-shaped grooves with rounded edges and U-shaped grooves. Specifically, the radial webs have rounded edges instead of pointed edges, and the radial grooves have rounded groove bases instead of V-shaped bases. This curvature distributes wear more evenly across the surface, preventing localized enlargement of the grinding gap while maintaining manufacturing feasibility through standard machining processes.
2Reliability
If rounded edges and rounded groove bases are used, then wear-related enlargement of the grinding gap is reduced, but the manufacturing complexity increases
Solution Approach 1:
The rounded edges and rounded groove bases are achieved through curvature principles that can be implemented using conventional machining techniques such as end mills with rounded toolpaths or specialized forming tools. The rounding radius is optimized to balance wear resistance with manufacturability, avoiding excessive complexity while ensuring the grinding gap remains consistent over time.
3Reliability
If the grinding mechanism is replaced or serviced due to wear, then the grinding gap enlargement is prevented, but maintenance costs and downtime increase
Solution Approach 1:
The rounded geometry distributes wear across a larger surface area, significantly extending the service life of the grinding mechanism. This prevents the grinding gap from enlarging to the point where replacement or servicing is required, thereby reducing maintenance downtime and costs while maintaining consistent grinding performance throughout the extended operational life.
Data Source
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AI summary
The invention relates to a disc assembly for a grinding unit, containing a plurality of discs (S) or consisting of a plurality of discs (S). Each of the discs (S) has a truncated conical or double conical or double truncated conical design, and for each discs (S), the angle between the surface line thereof and the cone axis > 30 to 82.5°. The discs (S) are stacked along a central axis (MA) of the assembly (A), and the assembly (A) has a plurality of radial grooves (RN) facing the central axis (MA) of the assembly (A) and radial webs (RS) facing away from the central axis (MA). Each of the radial grooves (RN) has a rounded groove base (NG), and each of the radial webs (RS) has a rounded edge (KT). The invention additionally also relates to a grinding unit which has at least two disc assemblies according to the invention and to the use of the assembly or the grinding unit according to the invention in order to comminute grinding stock.