Composite Motor Vehicle Rim Manufacturing via SMC and RTM
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current composite material rims for road motor vehicles are costly and time-consuming to produce, making them unsuitable for widespread adoption in the automotive industry due to high manual intervention and production times, despite their potential for weight reduction and performance improvement.
Innovation Solution
A manufacturing method using Sheet Moulding Compounds (SMC) for the central assembly and Resin Transfer Moulding (RTM) for the outer channel, incorporating carbon fibers with sensors for structural integrity, reduces manual labor and integrates composite materials efficiently, allowing for a lightweight and cost-effective rim production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If direct operator intervention is used to manufacture composite material rims, then structural reliability and customization can be improved, but production costs and production time increase significantly
Solution Approach 1:
The mold incorporates automated resin injection systems and heating elements that self-regulate the manufacturing process. The mold cavity automatically distributes resin through channels and maintains optimal curing temperatures without continuous operator intervention, enabling unattended production cycles while ensuring consistent structural quality.
Solution Approach 2:
Manual laying of carbon fibers and resin application by operators is replaced with automated fiber placement systems and resin transfer molding. The mechanical system uses computer-controlled mechanisms to position reinforcement fibers and inject resin precisely, eliminating manual labor while maintaining or improving structural reliability through consistent material distribution.
2Reliability
If direct operator intervention is used to manufacture composite material rims, then structural reliability can be improved, but production costs increase significantly
Solution Approach 1:
The mold incorporates automated resin injection systems and heating elements that self-regulate the manufacturing process. The mold cavity automatically distributes resin through channels and maintains optimal curing temperatures without continuous operator intervention, enabling unattended production cycles while ensuring consistent structural quality.
Solution Approach 2:
Manual laying of carbon fibers and resin application by operators is replaced with automated fiber placement systems and resin transfer molding. The mechanical system uses computer-controlled mechanisms to position reinforcement fibers and inject resin precisely, eliminating manual labor while maintaining or improving structural reliability through consistent material distribution.
3Ease of manufacture
If traditional manufacturing methods are used for rims, then production simplicity can be maintained, but weight reduction opportunities are lost
Solution Approach 1:
The invention uses carbon fiber reinforced polymer composites instead of traditional aluminum or steel alloys. The carbon fiber layers are oriented in specific directions within the mold cavity to optimize strength-to-weight ratio. This composite material approach reduces rim weight by 30-50% compared to traditional materials while maintaining structural integrity through the layered fiber reinforcement architecture.
4Weight of moving object
If composite material rims are manufactured for road vehicles, then weight reduction and performance improvement can be achieved, but production costs and complexity increase
Solution Approach 1:
The manufacturing process is divided into distinct modular stages: mold preparation with integrated channels, fiber placement, resin injection, heating/curing, and demolding. Each stage is independently controlled and can be automated separately. The mold itself is segmented into movable sections for easy assembly and disassembly, reducing the complexity barrier for manufacturing composite rims in road vehicle applications.
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
The method enables the production of lightweight rims with reduced production costs and time, enhancing vehicle performance and fuel efficiency while ensuring structural reliability through minimized operator intervention and integrated sensors for quality control.
Implementation Method 1
a penetration of a resin matrix, in a liquid state or in a semi-viscous state, into the carbon fiber structure
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A rim and a method for manufacturing a rim (1) for a motor vehicle which provide the steps of manufacturing a central assembly (3) at least partially by means of a press moulding process, known as SMC (Sheet Moulding Compounds), using a carbon fiber material with short fibers, preferably carbon fibers having a length up to 25-50 mm, and a resin, preferably of the thermosetting type; manufacturing the outer channel (2) and assembling the outer channel (2) and the central assembly (3) so as to obtain the rim (1).