Friction Rings With Compressed Areas
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Solution Overview
Problem
Existing friction assemblies with freely rotating friction rings face challenges in achieving optimal mechanical strength and adaptability for frictional connections, often requiring multiple materials and complex manufacturing processes, which can lead to reduced service life and increased production costs.
Innovation Solution
The friction rings are made from a resin or sintered material with compressed and non-compressed areas, allowing for improved mechanical strength and adaptability, using a single material to simplify production and reduce the risk of damage from metal carriers, while also enabling better friction behavior and cooling through grooved compacted areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If friction rings are made from multiple materials with metal carriers, then mechanical strength is improved, but manufacturing complexity increases and service life decreases due to wear at material interfaces
Solution Approach 1:
The patent merges the carrier and friction lining into a single monolithic friction ring made of sintered material. This eliminates the interface between metal carrier and friction lining, resolving the wear problem at material interfaces while maintaining manufacturing simplicity through a single-material construction process.
Solution Approach 2:
The patent uses sintered material as a composite material that inherently provides both the mechanical strength of metal and the friction properties of friction linings. This eliminates the need for separate metal carrier and friction lining components, reducing manufacturing complexity while improving service life.
2Device complexity
If friction rings are made from single material, then manufacturing complexity is reduced, but mechanical strength decreases
Solution Approach 1:
The patent changes the physical and mechanical parameters of the sintered material through controlled sintering processes, achieving optimal balance between mechanical strength and friction properties. By adjusting sintering temperature, pressure, and material composition, the single-material friction ring attains sufficient mechanical strength for demanding applications.
3Ease of manufacture
If friction rings have uniform density, then manufacturing is simplified, but adaptability to counter plates decreases
Solution Approach 1:
The patent applies local quality by creating friction rings with non-uniform density distribution. The sintering process is controlled to produce regions of different density within the same friction ring, allowing adaptation to specific counter plate geometries and friction requirements while maintaining a relatively simple single-step manufacturing process.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enhances the mechanical stability and compressibility of the friction rings, leading to improved friction behavior, extended service life, and reduced production complexity, with the ability to better adapt to counter plates and reduce drag torque, resulting in a more efficient and durable friction assembly.
Implementation Method 1
the inner disks and/or the outer disks are relatively adjustable to each other in the axial direction to form a frictional connection with the friction rings
Data Source
Figure 1~2
Figure 3~5
Figure 6~9
AI summary
The invention relates to a friction assembly (1) comprising several inner lamellae (2) and several outer lamellae (3), wherein the inner lamellae (2) and the outer lamellae (3) are arranged alternately in an axial direction (4), and wherein at least one freely rotatable friction ring (11) is arranged between the inner lamellae (2) and the outer lamellae (3), and wherein the inner lamellae (2) and/or the outer lamellae (3) are adjustable relative to each other in the axial direction (4) to form a frictional connection with the friction rings (11).The friction rings (11) are made of at least one resin in which at least one additive is contained, or of a sintered material, wherein the friction rings (11) have on a surface (19) facing an inner lamella (2) and on a surface (18) facing an outer lamella (3) at least one compacted area (20) and at least one non-compacted area (21) and/or at least one area (21) that is less compacted in relation to the compacted area (20).