Bending Press Tool Changing Device Linear Guide Stability
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Solution Overview
Problem
Existing tool changing systems in bending presses are inefficient, as they require extensive time and are not ideal for quick tool changes, lacking stability and simplicity.
Innovation Solution
A bending press design featuring a first fixed press beam and a second adjustable press beam with a tool changing device mounted on a first linear guide, a second linear guide arranged at a distance, and a drive device using a rack and pinion system, along with a gripper system for efficient tool positioning and manipulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a tool changing system is mounted on the back gauge, then tool changing can be performed, but the back gauge is not ideally suited for changing tools and stability is compromised
Solution Approach 1:
The tool changing device is extracted from the back gauge and mounted independently on the press beam using linear guides. This separates the tool changing function from the back gauge, allowing each component to be optimized for its specific function without compromising the structural stability of either.
2Device complexity
If a tool changing device is mounted on a single linear guide, then the structure can be simple, but stability is insufficient
Solution Approach 1:
The tool changing device transitions from being supported by a single linear guide to being supported by two linear guides arranged at a distance from each other. This dimensional change in the support structure provides both ends support, significantly enhancing the stability of the tool changing device while maintaining relatively simple construction.
3Area of stationary object
If the linear guides are arranged close together, then the structure is compact, but stability is reduced
Solution Approach 1:
The two linear guides are arranged at a distance from each other along the press beam, creating a distributed support structure. This spatial arrangement provides both ends support for the tool changing device, enhancing stability without excessive increase in overall footprint, as the guides are positioned within the available space on the press beam.
4Speed
If a rack and pinion drive system is used, then high acceleration values can be achieved, but the device complexity increases
Solution Approach 1:
The drive system uses a rack and pinion mechanism, which is a classic mechanical transmission system. While mechanically simple in concept, it provides high acceleration capability through direct engagement. The rack is mounted on the press beam and the pinion on the tool changing device, creating a reliable drive system that balances simplicity with high performance.
5Stability of the object's composition
If the tool changing device is designed with heavy components for stability, then stability is improved, but the device becomes less efficient and more costly
Solution Approach 1:
Instead of increasing component weight for stability, the solution uses two linear guides arranged at a distance to provide both ends support. This structural approach achieves high stability through geometric distribution of support points rather than through mass, keeping the device lightweight and efficient while maintaining excellent stability during tool changing operations.
Data Source
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AI summary
The invention relates to a bending press, especially a press brake (2), comprising a first stationary crosshead (4), and a second crosshead (7) that can be moved in relation thereto, a machine frame (17) on which the crossheads (4, 7) are received and which is arranged on an inner side (21) of the crossheads (4, 7), tool-holding elements (5), arranged or embodied on the crossheads (4, 7), for receiving bending tools (6), and a tool-changing device (16) which is used to position the bending tools (6) in the tool-holding element (5). The tool-changing device (16) is mounted on a first linear guide (20) which is arranged on the inner side (21) of the first crosshead (4). In addition, at least one second linear guide (22) is provided, which is arranged at a distance (23) from the first linear guide (20). Furthermore, a drive device is (19) is provided, by means of which the tool-changing device (16) can be moved along the length (18) of the tool-holding elements (5).