Bending Press System with Integrated Clamping for Pipe Curvature
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Solution Overview
Problem
Existing bending press systems face challenges in forming precise curvatures in pipes due to spring back and low productivity, as they either require multiple processes or struggle to deform materials beyond their yield point.
Innovation Solution
A bending press system that includes a guide post, slide plate, bending die with upper and lower surfaces, and clamping means to clamp both ends of the pipe, allowing for localized deformation to the yield point, preventing spring back and enabling quick formability and mass production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If stretch bend forming is used to form pipe curvature, then manufacturing precision can be achieved, but productivity decreases due to multiple processes required
Solution Approach 1:
The invention combines the clamping function and bending forming function into a single integrated pressing operation. The pressing means simultaneously clamps both ends of the pipe and applies bending force, eliminating the need for separate clamping and forming processes that characterize traditional stretch bend forming, thereby improving productivity while maintaining precision
Solution Approach 2:
The pressing means applies force to deform the pipe material to its yield point before final curvature formation. This preliminary plastic deformation prevents spring back, ensuring the pipe maintains the desired curvature without requiring additional correction processes, thus improving both precision and productivity
2Productivity
If roll bend forming is used to form pipe curvature, then productivity is improved, but manufacturing precision deteriorates due to spring back
Solution Approach 1:
The pressing means applies sufficient force to deform the pipe material to its yield point during the bending process. This preliminary plastic deformation ensures that the material permanently retains the desired curvature shape, preventing spring back that plagues roll bend forming, thereby achieving high precision while maintaining productivity
Solution Approach 2:
The invention changes the force application parameter by using a pressing mechanism that can apply concentrated force sufficient to reach the material's yield point, unlike gradual roll bending. This parameter change enables plastic deformation that locks in the curvature, eliminating spring back while maintaining efficient single-step forming
3Manufacturing precision
If both ends of the pipe are clamped during bending, then manufacturing precision is improved by preventing spring back, but device complexity increases
Solution Approach 1:
The clamping function and bending function are merged into a single pressing means. The pressing means inherently provides both clamping action (to hold the pipe ends) and bending action (to form the curvature) in one integrated component, eliminating the need for separate complex clamping mechanisms while maintaining precision
Solution Approach 2:
The pressing means is designed as a multi-functional component that simultaneously performs clamping, positioning, and bending operations. This universal component replaces multiple specialized devices, reducing overall system complexity while achieving the dual goals of preventing spring back and forming accurate curvature
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 system ensures stable plastic deformation and quick formability with reasonable bending quality, allowing for shorter manufacturing cycle times and enabling mass production by forming curvatures through pressing.
Implementation Method 1
at least one lifting die disposed so as to contact with at least one side surface of the lower die, supported upwardly by a spring, and adapted to push upwardly at least one end portion of the object on which bend forming is completely performed
Implementation Method 2
a clamping cylinder mounted corresponding to the receiving recess at an upper end of the clamping jaw through a bracket and having an operating rod
Implementation Method 3
deforming a local part of the pipe to yield point through pressing in a state of supplying the pipe to the bending die and clamping both ends of the pipe
Data Source
AI summary
A bending press system is disclosed. The bending press system may include: at least one guide post; a slide plate mounted at a slider so as to be slidable upwardly or downwardly along the guide post; a bending die including a lower die having an upper surface and an upper die having a lower surface corresponding to the upper surface of the lower die and mounted on a lower surface of the slide plate, and adapted to bend an object supplied between the lower die and the upper die to have a predetermined curvature; and a pair of clamping means mounted respectively at both sides of the bending die corresponding to the bending die and adapted to clamp both end portions of the object.