Suspension Arm Bearing Section Compression
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for producing suspension arms from extruded profiles result in structural weakening, leading to reduced shear stiffness and negative impacts on vehicle driving behavior due to processing openings in the end bearing sections.
Innovation Solution
A method involving a semi-finished product with a bottom web and protruding side webs, where machining openings are made between the side webs in the terminal bearing section, and the section is compressed to close the openings, creating coaxially arranged bearing openings in one side web, thereby enhancing the stability of the bearing section without additional components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If machining openings are made in the bottom web to enable bearing section formation, then the suspension arm can be produced as a one-piece formed component, but the processing openings cause structural weakening and reduced shear stiffness
Solution Approach 1:
The patent applies preliminary action by making machining openings in the bottom web before forming the bearing sections. These openings enable the subsequent compression and forming operations to create closed-cell bearing sections. The openings are strategically positioned and sized to allow forming while minimizing structural weakening, resolving the contradiction between ease of manufacture and strength.
Solution Approach 2:
The patent changes parameters by controlling the size, position, and number of machining openings in the bottom web. By optimizing these parameters, the process enables bearing section formation while maintaining adequate shear stiffness. The openings are made sufficiently small and positioned appropriately to balance manufacturability with structural integrity.
2Strength
If the bearing section is compressed to close the machining openings, then structural strength is improved, but additional processing steps and time are required
Solution Approach 1:
The patent merges the compression step with the bearing section forming operation. The compression that closes the machining openings is integrated into the same processing step that forms the bearing sections, rather than being a separate subsequent operation. This combining of operations improves structural strength while minimizing additional processing time.
Solution Approach 2:
The machining openings are created in advance before the compression step, allowing the compression operation to serve dual purposes: closing the openings for structural strength and finalizing the bearing section formation. This preliminary preparation enables the compression step to be more efficient and less time-consuming.
3Ease of manufacture
If multiple machining openings are made in the bottom web, then bearing section formation is facilitated, but the structural weakening and processing complexity increase
Solution Approach 1:
The patent applies local quality by making machining openings only in specific localized areas of the bottom web where bearing sections need to be formed. Rather than opening the entire bottom web or making numerous small openings throughout, the openings are concentrated in the terminal bearing sections where they are most needed, facilitating bearing formation while minimizing overall processing complexity and structural weakening.
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 results in a more rigid suspension arm with improved shear stiffness and handling performance, maintaining cost-effectiveness and manufacturing speed without additional components, and allowing for further stabilization through material attachment methods.
Implementation Method 1
compressing the bearing section in the transverse direction of the chassis arm until at least one of the processing openings closes at least in sections
Data Source
Figure 1a~1b
Figure 1c~1d
Figure 2a~2c
AI summary
The method involves providing a semi-finished material from an extruded section with a bottom rod (2), where side rods (3) project from the base rod under formation of intermediate clearance between the rods. A processing aperture (4) is introduced into the base rod between the side rods in a bearing section (1a) of a suspension arm (1). The bearing section is compressed in a transverse direction (Q) of the suspension arm till the aperture is closed. Bearing openings (5) are introduced into one of the side rods, where the openings are formed coaxial to each other. An independent claim is also included for a suspension arm.