Composite Bicycle Component Molding With Intentional Surface Roughness
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Bicycle components made from fibrous composite materials often require extensive post-processing to address surface imperfections such as dips, craters, and score marks, which are aesthetically undesirable and time-consuming to correct.
Innovation Solution
Incorporating intentional surface roughness into the shaping mold during the primary forming process of fibrous composite materials, allowing the surface roughness to be generated synchronously with the shaping of the component, thereby preventing imperfections and enhancing surface uniformity and optical quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If fibrous composite materials are used to manufacture bicycle components, then weight is reduced and strength is improved, but surface imperfections such as dips, craters, and score marks occur requiring extensive post-processing
Solution Approach 1:
The patent applies preliminary action by incorporating surface roughness into the shaping mold before the forming process. This pre-prepared roughness pattern prevents surface imperfections from occurring during the shaping of fibrous composite materials, eliminating the need for post-processing steps like filling, sanding, and varnishing while maintaining both weight advantages and surface quality.
Solution Approach 2:
The patent changes the surface parameter of the shaping mold by introducing intentional roughness. This parameter change in the mold surface directly affects the composite material flow and curing process, preventing the formation of surface defects while preserving the lightweight and high-strength properties of the fibrous composite material.
2Manufacturing precision
If extensive post-processing is applied to remove surface imperfections, then optical quality is improved, but manufacturing time and complexity increase
Solution Approach 1:
The patent eliminates post-processing by performing preliminary action during mold preparation. The intentional surface roughness is built into the shaping mold beforehand, which prevents surface imperfections during the forming process itself, achieving high optical quality directly after shaping without requiring subsequent filling, sanding, or varnishing operations.
Solution Approach 2:
The patent extracts the surface quality improvement function from the post-processing stage and transfers it to the mold design stage. By incorporating surface roughness into the shaping mold, the need for separate post-processing steps is eliminated, reducing manufacturing time and complexity while maintaining optical quality.
3Manufacturing precision
If fill mass and varnish coating are applied to correct surface imperfections, then optical appearance is improved, but additional materials and processing steps are required
Solution Approach 1:
The patent applies preliminary action by preparing the mold surface with intentional roughness before the forming process. This prevents surface imperfections from occurring in the first place, eliminating the need for fill mass application and varnish coating steps, thereby reducing process complexity while achieving surface uniformity.
Solution Approach 2:
The patent removes the fill mass and varnish coating steps from the manufacturing process by transferring the surface quality function to the mold design. The intentional surface roughness in the shaping mold directly produces defect-free surfaces, extracting the need for additional corrective materials and processing steps.
Data Source
AI summary
A method of manufacturing a bicycle component having a component body formed at least partially of a fibrous composite material in a shaping mold. A shaping area of the shaping mold which serves to shape an outer section of the component body is provided with at least one intended surface roughness. At the same time, an intentional surface roughness is provided for the outer section by means of the surface roughness of the shaping area during manufacture of the outer section, to inhibit surface imperfections of the shaped outer section.