Four-Bar Linkage Clamping Pliers for Precise Angle Fixation
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Solution Overview
Problem
Conventional clamps, such as miter clamps, are limited in their ability to securely hold parts at precise angles, particularly where aesthetic considerations outweigh strength requirements, like in decorative molding or picture frames, as they tend to be relatively weak.
Innovation Solution
The development of clamping pliers with a four-bar linkage mechanism that allows for adjustable clamping arms and interchangeable clamping members, enabling secure fixation of parts at specific angles, including 90°, through intersecting axes of applied force, which can be adjusted to accommodate various materials and shapes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional miter clamps are used to hold parts at precise angles, then the aesthetic considerations are satisfied, but the clamping strength is insufficient and parts are not securely held
Solution Approach 1:
The clamp is divided into multiple independent clamping arms (first pair and second pair) that can be adjusted separately. Each arm can be independently positioned and locked at specific angles, allowing the device to handle complex multi-angle clamping requirements while maintaining structural simplicity for each individual arm
Solution Approach 2:
The clamp incorporates adjustable and interchangeable components including replaceable clamping members and adjustable arm configurations. This dynamic design allows the clamp to adapt to different clamping scenarios and material types, transforming a static simple structure into a versatile strong clamping system
2Adaptability or versatility
If a fixed angle clamp is used for decorative molding, then aesthetic considerations are met, but the clamp cannot accommodate various materials and shapes
Solution Approach 1:
The clamp is designed with interchangeable clamping members that can be swapped depending on the material and shape being clamped. The mechanism supports multiple clamping configurations and angle settings, making a single device capable of handling diverse clamping tasks across different materials and geometries
Solution Approach 2:
The clamp features adjustable arm angles and replaceable clamping members that allow the device to dynamically adapt to different clamping requirements. This adjustability enables the same basic mechanism to serve multiple functions across various materials and shapes without requiring multiple specialized tools
3Object-affected harmful factors
If conventional clamps are used to hold parts together, then the parts can be joined, but the clamping force is not evenly distributed causing damage to materials
Solution Approach 1:
Different clamping members are designed with specific local characteristics suited for particular materials and shapes. The contact surfaces and geometries of individual clamping members are optimized for their intended use, allowing even distribution of clamping force across diverse material types while maintaining precise angle control
Solution Approach 2:
The patent replaces conventional single-point or simple line contact clamping with a distributed multi-point contact system through the paired clamping arms and members. This substitution creates more uniform force distribution across the workpiece, reducing localized stress concentrations that could cause material damage while maintaining precise angular positioning
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 clamping pliers provide a robust and versatile solution for holding parts at precise angles, ensuring secure joining while minimizing damage to materials, and allowing for easy adaptation to different clamping tasks with various clamping member types.
Implementation Method 1
a four-bar linkage clamping mechanism; wherein the clamping mechanism actuates the clamping arms and applies intersecting axes of applied force through the first and third clamping members, and applies intersecting axes of applied force through the second and fourth clamping members
Data Source
AI summary
Right angle clamping pliers include a four-bar linkage clamping mechanism coupled to opposing pairs of clamping arms. Any of a variety of detachable clamping members can be attached to each clamping arm. Some clamping members orient the parts being joined. For example, right angle clamping members orient edges and curved C-shaped clamping members orient tubes, pipes and other cylindrical parts. Different types of clamping members can be used in a single configuration to accommodate a wide variety of parts to be joined.