Clamp Slide Rail Height-to-Width Ratio Optimization
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Solution Overview
Problem
Existing screw clamps face issues with lateral rigidity and clamping force decline when dealing with yielding workpieces, particularly due to inappropriate height-to-width ratios in slide rails, leading to sagging and increased friction, which affects the clamp's stability and material utilization.
Innovation Solution
A clamp design with a slide rail having a height-to-width ratio between 2.55:1 and 2.8:1, ensuring high lateral rigidity, minimizing sagging, and maintaining a flat decline in clamping force, achieved through cold forming and integral joining of the slide rail and fixed arm, allowing for optimized material usage and simplified manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the height-to-width ratio of the slide rail is increased to 3:1 or 4:1, then the overall rigidity is improved, but the lateral rigidity deteriorates and the clamping force declines sharply
Solution Approach 1:
The patent applies parameter changes by optimizing the height-to-width ratio of the slide rail cross-section to a specific range (2.3:1 to 2.8:1, preferably 2.5:1 to 2.7:1). This precise parameter adjustment resolves the contradiction by finding the optimal balance point where both overall rigidity and lateral rigidity are sufficiently high, preventing the sharp decline in clamping force that occurs at higher ratios while maintaining structural stability.
2Force
If the height-to-width ratio of the slide rail is decreased to 2:1 or 2.2:1, then the lateral rigidity is improved, but the sagging of the slide rail increases causing the slide arm and spindle to become strongly inclined
Solution Approach 1:
The patent resolves this contradiction through parameter changes by establishing a minimum height-to-width ratio threshold (2.3:1 to 2.8:1). This parameter boundary prevents excessive sagging by ensuring the slide rail has sufficient height relative to its width, thereby maintaining proper alignment of the slide arm and spindle while still providing adequate lateral rigidity.
3Force
If the height-to-width ratio is set to 2:1 or 2.2:1, then the lateral rigidity is improved, but the material exploitation becomes suboptimal as the lateral rigidity exceeds requirements
Solution Approach 1:
The patent optimizes material usage through parameter changes by defining a specific height-to-width ratio range (2.3:1 to 2.8:1) that achieves the required lateral rigidity without over-engineering. This optimal parameter range ensures sufficient structural performance while minimizing material consumption, avoiding the inefficiency of using lower ratios that provide excessive lateral rigidity beyond what is actually needed for the application.
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 proposed design achieves high lateral rigidity, prevents sagging, and maintains a stable clamping force even with yielding workpieces, while allowing for easy handling and production with a constant profile cross section, ensuring the clamp's stability and efficiency.
Implementation Method 1
The slide rail and the fixed arm can be manufactured in one piece from a profiled strip by cold drawing or cold rolling
Data Source
AI summary
A clamp comprising a slide rail, a fixed arm integrally joined to the slide rail, and a slide arm movable on the slide rail is provided, the slide rail having in the cross section an overall height and an overall width having a ratio to each other, which ranges between 2.55:1 and 2.8:1.