Brake Caliper Housing Segmented Design
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Solution Overview
Problem
Current brake caliper housings lack efficient designs for positioning and actuating brake pads relative to the rotor, leading to suboptimal braking performance and manufacturing processes that result in surface roughness and material excess.
Innovation Solution
A brake caliper housing with a cast unitary design featuring a caliper bridge, actuator mounting flange, and bearing protrusions, allowing for precise positioning and actuation of brake pads and incorporating machining to reduce surface roughness and material thickness, facilitating better integration with brake components and improved manufacturing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional brake caliper housing designs are used, then manufacturing is simpler, but braking performance is suboptimal due to imprecise pad positioning and actuation
Solution Approach 1:
The caliper housing is segmented into distinct functional zones: a first cavity for the brake pad, a second cavity for the actuator, and a bridge portion connecting them. This segmentation allows each component to be precisely positioned and optimized for its specific function, improving braking performance while maintaining manufacturability through modular design
Solution Approach 2:
The housing incorporates locally optimized features including bearing protrusions with specific geometries at critical contact points, varying wall thicknesses in different regions, and specialized cavity shapes. These local quality variations ensure precise pad positioning and actuation while allowing the overall structure to remain manufacturable using standard casting processes
2Manufacturing precision
If conventional manufacturing processes are used, then production is easier, but surface roughness increases and material excess is generated
Solution Approach 1:
The housing design incorporates preliminary considerations for manufacturing by integrating machining surfaces and tolerances directly into the casting design. The bearing protrusions and cavity surfaces are designed with predetermined geometries that require minimal post-casting machining, reducing both surface roughness and material removal while maintaining ease of manufacture
Solution Approach 2:
The invention optimizes casting parameters including wall thickness distributions, cavity volumes, and surface finishes through design modifications. By carefully controlling these parameters in the casting process, the housing achieves reduced surface roughness and minimized material excess while maintaining manufacturability through standard automotive casting processes
Data Source
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AI summary
A brake caliper housing (32) includes a first end wall (140), a second end wall, and a transverse wall (144) that extends from the first end wall to the second end wall. The brake caliper housing includes a first bearing protrusion (160) that extends from the first end wall (140) and the transverse wall (144), and that defines a first lateral bearing surface (162) and a first arcuate bearing surface (164) that extends from the first lateral bearing surface (160).