Explosive Forming Closure Device Wedge Mechanism
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Solution Overview
Problem
Existing closure devices for explosive forming struggle to reliably support and align explosive forces during the forming process, leading to instability and misalignment of components.
Innovation Solution
A closure device with a movable connection unit and a static holding structure featuring a wedge structure, guided by a hydraulic actuator, which supports high forces and maintains alignment through metallic antifriction coatings and anchoring elements, ensuring stable and uniform motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional closure device is used for explosive forming, then the die can be closed, but the device cannot reliably support and maintain alignment under high explosive forces
Solution Approach 1:
The closure device is segmented into functionally independent components: a connection unit for fastening to the die and a wedge structure for motion transmission. This segmentation allows each component to be optimized for its specific function, with the connection unit providing stable anchoring and the wedge structure providing reliable motion coupling under explosive loads.
Solution Approach 2:
A static holding structure is introduced as an intermediary element between the connection unit and the wedge structure. This holding structure provides a stable reference frame that guides the wedge structure's movement and maintains alignment, while being independently fastened to the die to resist explosive forces.
2Force
If a movable connection unit is used to support explosive forces, then force support is improved, but component alignment becomes unstable
Solution Approach 1:
Different parts of the system have different mobility characteristics tailored to their functions: the connection unit is movable to absorb and distribute explosive forces, while the static holding structure provides fixed alignment references. This local differentiation of quality (movable vs. fixed) allows simultaneous force support and alignment maintenance.
Solution Approach 2:
The system employs asymmetric structural roles: the connection unit and wedge structure can move relative to each other along a controlled path, while the holding structure remains asymmetrically positioned and fastened to the die to provide stable guidance and alignment under asymmetric explosive loading.
3Manufacturing precision
If a static holding structure is added to guide the wedge, then alignment is maintained, but device complexity increases
Solution Approach 1:
The static holding structure serves multiple functions simultaneously: it provides guiding surfaces for the wedge structure, maintains alignment between components, and acts as a mounting interface fastened to the die. This multi-functionality reduces the need for separate alignment and mounting components, thereby limiting the increase in overall device complexity.
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 supports explosive forces, maintains alignment, and ensures reliable closure and sealing of the explosive forming die, even under high activation and explosive conditions, enhancing the stability and torsional stiffness of the closure device.
Implementation Method 1
A wedge structure engages the connection unit and is disposed within the static holding structure. The wedge structure is moveable relative to the static holding structure transverse to the axis to move the connection unit between the working position and the rest position.
Implementation Method 2
sliding aids are provided on the surfaces moved relative to each other between the wedge structure and the static holding structure. These sliding aids can support uniform movement of the wedge structure on the static holding structure and promote force support via the static holding structure. Advantageously, these sliding aids are metallic antifriction coatings.
Data Source
AI summary
Through the invention, a closure device for explosive forming with a connection unit movable relative to the explosive forming die between a working position on the die and a rest position is to be configured, so that the explosive forming die can be closed in simple and reliable fashion and, at the same time, the explosion forces supported. This task is solved by a closure device, in which a wedge structure is guided to move on a static holding structure and is motion-coupled to the connection unit, the resulting movement of the connection unit being directed across the movement of the wedge structure.