Gripping Jaw for Prismatic Wire Torsion Prevention
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Solution Overview
Problem
In bending machines, materials with prismatic cross-sections and rods often twist and become displaced out of the bending plane due to dimensional deviations and mechanical characteristics, leading to distortion of two-dimensional and three-dimensional products during production.
Innovation Solution
A mechanical jaw system is implemented to grip the advancing material between the advancer and the bending head, preventing rotation and ensuring bends occur within the correct plane by synchronizing the jaw's motion with the material's advancement and using mechanical forces to maintain grip during the process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If rollers are used to advance the wire, material of prismatic cross-section, or rod, then the material can be advanced towards the bending head, but the material twists in relation to the axial line due to dimensional deviations, causing the under-production part to twist and be displaced out of the bending plane
Solution Approach 1:
A gripping device is introduced as an intermediary element between the rollers and the bending head. This device includes at least one gripping element that can grip the advanced material to prevent rotation, serving as a mediator that transmits the advancement function while eliminating the harmful twisting effect.
Solution Approach 2:
The gripping device applies a preliminary counter-action to prevent the twisting that would otherwise occur during advancement. By gripping the material before it reaches the bending head and maintaining this grip throughout the advancement process, the system pre-empts the rotation problem rather than correcting it after occurrence.
2Device complexity
If the material is advanced without rotation prevention, then the advancement process is simple, but the center of mass displacement causes torsion of the wire, prismatic material, or rod, leading to distortion of the under-production product
Solution Approach 1:
The gripping device serves as a simple intermediary component that adds minimal complexity to the advancement system while providing the critical function of preventing torsion. The device includes at least one gripping element that can be actuated to grip the material, maintaining geometric stability without requiring complex mechanisms.
3Manufacturing precision
If a jaw is used to grip the advancing material to prevent rotation, then torsion and displacement out of the bending plane are prevented, but the machine complexity increases
Solution Approach 1:
The gripping device is segmented into at least one movable gripping element and a fixed element, allowing the gripping function to be performed by a simple, modular component rather than a complex integrated system. This segmentation enables easy implementation while achieving the precision goal.
Solution Approach 2:
The gripping element is designed to be movable rather than fixed, allowing it to be actuated into the gripping position only when needed during the advancement process. This dynamic approach maintains simplicity by keeping the gripping mechanism out of the way during other operations while providing precision control when required.
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 solution effectively prevents torsion and rotation, ensuring accurate production within the bending plane, maintaining product integrity and reducing distortion, with advantages of simplicity, low cost, and easy automation.
Implementation Method 1
a jaw (4) which mechanically grips the material (1) advanced by the rollers (2)
Implementation Method 2
grips it with sufficient strength so that it cannot rotate
Data Source
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AI summary
A method and a system according to which advancing material (1) such as wire prismatic material, or rod is gripped during the duration of its advancement from an advancement unit (2) towards a bending unit (3). The gripping is effected by a jaw (4) that grips material (1) with sufficient force so that the material (1) cannot twist. By gripping the advancing material (1), the under-production part is simultaneously gripped and prevented from rotating, so that bends are made in the correct plane and the bent product is produced with great accuracy.