Brake Component Casting with Melting Spacers

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Solution Overview

Problem

The challenge in manufacturing motor vehicle brake components is to simplify and expedite the process of incorporating friction damping means to absorb and dissipate vibrations, which often results in unwanted noise during braking, while ensuring uniform composition and minimizing compositional discontinuities that can affect performance.

Innovation Solution

The method involves supporting an insert in a mold cavity using spacers of the same composition as the molten material, allowing the spacers to melt and solidify into a uniform brake component, thereby maintaining alignment and load-bearing capacity, and ensuring a uniform composition that reduces noise and performance issues.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If friction damping means are incorporated into brake components to reduce vibrations and noise, then vibration absorption and noise reduction are improved, but the manufacturing process complexity increases

Engineering Contradiction:
Improvevibration and noiseVSAvoidmanufacturing process complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The friction damping insert and the brake component are merged into a single integrated structure through the casting process. The insert is positioned in the mold cavity and the molten material is cast around it, creating a unified component with the damping insert embedded within, eliminating the need for separate assembly operations.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The friction damping insert is pre-positioned in the mold cavity before the casting process begins. The spacers are also pre-placed to hold the insert in the correct position. This preliminary positioning ensures proper placement without requiring complex post-casting alignment or assembly operations.

Inventive Principle:
Principle #10Preliminary action

2Manufacturing precision

If spacers of different composition than molten material are used to support inserts, then alignment and positioning are maintained, but compositional discontinuities occur affecting performance

Engineering Contradiction:
Improveinsert alignmentVSAvoidcompositional uniformity
Core Design Contradiction:
Manufacturing precisionVSStability of the object's composition

Solution Approach 1:

The spacers are made of the same composition as the molten material used to cast the brake component. This ensures that when the spacers remain after casting, they are compositionally identical to the surrounding material, eliminating compositional discontinuities and ensuring uniform properties throughout the entire component.

Inventive Principle:
Principle #33Homogeneity

3Object-affected harmful factors

If traditional friction damping methods are used with separate components, then vibration damping is achieved, but assembly complexity and potential misalignment increase

Engineering Contradiction:
Improvevibration dampingVSAvoidassembly ease
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The friction damping insert is integrated directly into the brake component during the casting process itself. The insert becomes a permanent, fixed part of the brake component structure, eliminating the need for separate assembly operations and ensuring precise, consistent positioning that cannot be achieved through post-manufacturing assembly.

Inventive Principle:
Principle #5Merging (Combining)

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 approach simplifies the manufacturing process, reduces noise and performance issues related to compositional discontinuities, and enhances the brake component's operational stability by maintaining a uniform composition and minimizing frictional coefficient variations, thermal expansion differences, and wear.

Implementation Method 1

gradually melting the one or more spacers in the molten material

Methodology Applied
Scientific EffectMelting: Melting

Implementation Method 2

solidifying the molten material around the insert and into a brake component of a uniform composition

Methodology Applied
Scientific EffectSolidification: Freezing

Data Source

PatentUS8714232B2Method of making a brake component
Publication Date: 2014.05.06 GM GLOBAL TECHNOLOGY OPERATIONS LLC
  • US8714232B2 patent drawing
  • US8714232B2 patent drawing
  • US8714232B2 patent drawing

AI summary

One exemplary embodiment includes a method that calls for supporting an insert in a mold cavity of a casting die by way of one or more spacers, introducing a molten material into the mold cavity such that the one or more spacers are melted and consumed by the molten material, and wherein the one or more spacers and the molten material are of the same composition.