Dot-Matrix Pressurizing Assembly for Curved-Surface Diffusion Welding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional diffusion welding equipment is inadequate for welding curved or complex-shaped workpieces due to the inability to adjust pressure locally and address non-even temperature fields, leading to poor welding performance on irregular surfaces.
Innovation Solution
A pressurizing assembly with a dot-matrix pressurizing member and induction heating elements, allowing independent pressure and localized heating of curved-surface workpieces, featuring a driving base with parallel pressurizing rods and movable platens for precise stress application and temperature control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional diffusion welding equipment uses limited loading points to apply pressure, then the structure is simple, but the pressure distribution is even and cannot be adjusted locally for curved surfaces
Solution Approach 1:
The pressurizing system is segmented into multiple independent pressurizing units, each capable of independent pressure control. This segmentation allows localized pressure adjustment on curved surfaces while maintaining overall system functionality, resolving the contradiction between adaptability and complexity.
Solution Approach 2:
The patent transitions from a single-plane pressurizing approach to a multi-dimensional dot-matrix arrangement of pressurizing units. This dimensional expansion enables independent pressure control at multiple locations simultaneously, achieving curved surface adaptability without excessive complexity.
2Temperature
If conventional equipment uses sidewall heating assemblies, then the heating structure is simple, but the heating is ineffective for top and bottom surfaces of workpieces
Solution Approach 1:
The heating system is segmented into multiple independent heating units corresponding to each pressurizing unit location. This allows targeted heating of specific surface areas including top and bottom surfaces, improving heating effectiveness while maintaining manageable system complexity through modular design.
Solution Approach 2:
Each heating unit provides localized heating tailored to specific surface regions of the workpiece. This local quality approach ensures effective heating of curved and complex surfaces that require different temperature conditions in different areas, resolving the heating effectiveness contradiction.
3Adaptability or versatility
If conventional diffusion welding uses even stress across welded components, then the stress distribution is uniform, but it cannot meet demands of pressure zoning adjustment for non-even temperature fields
Solution Approach 1:
The pressurizing system transitions from static even stress application to dynamic localized stress control. Each pressurizing unit can independently adjust its pressure output, enabling pressure zoning adjustment that adapts to non-even temperature fields and complex surface geometries, thereby improving welding quality for curved surfaces.
Solution Approach 2:
The system enables independent variation of pressure parameters at different locations through the dot-matrix arranged pressurizing units. This parameter change capability allows optimization of pressure distribution according to local temperature fields and surface curvature, resolving the contradiction between adaptability and welding precision.
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
Enables effective diffusion welding of curved surfaces by adjusting pressure and temperature distribution independently, enhancing the welding strength and adaptability to complex shapes.
Implementation Method 1
an induction heating element disposed adjacent to a free end of each pressurizing rod to heat respective surface regions of the curved-surface workpiece
Implementation Method 2
each platen base is movably connected to the adjacent movable platen and adjacent movable platens are movably connected to one another via electromagnetic attraction and cooperating socket joints
Data Source
AI summary
A pressurizing assembly includes: a dot-matrix pressurizing member including a driving base and a plurality of pressurizing rods, the driving base being provided with a plurality of mounting positions arranged in a dot-matrix pattern, with each pressurizing rod mounted at its respective mounting position and all the pressurizing rods being parallel to each other, and the driving base being configured to independently drive the plurality of pressurizing rods so as to apply localized and independent pressure to the curved-surface workpiece; and an induction heating element disposed adjacent to a free end of each pressurizing rod to heat respective surface regions of the curved-surface workpiece.