Fin Block With Variable Fin Widths For Extrusion Calibration
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Solution Overview
Problem
Existing calibrating devices for extruded profiles experience rattling issues due to the formation of bulge structures on the profile surface, caused by the interaction between the plastically deformable profile and fin blocks with constant spacing, leading to repeated engagement of bulges into grooves and intensified surface imperfections.
Innovation Solution
The development of fin blocks with a fin structure featuring variable fin widths along the longitudinal direction, maintaining a constant spacing, which prevents periodic superstructures and reduces rattling by ensuring that bulges do not consistently fall into subsequent grooves, achieved through 3D printing or other manufacturing methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If fin blocks with constant spacing are used, then the structure is simple and easy to manufacture, but rattling occurs due to periodic bulge formation on the profile surface
Solution Approach 1:
The fin blocks employ variable fin widths along the longitudinal direction, creating local variations in the fin structure. This local quality change prevents the formation of periodic bulge patterns on the profile surface, thereby eliminating rattling while maintaining manufacturing feasibility through methods like 3D printing or conventional machining.
Solution Approach 2:
The fin blocks introduce asymmetry in the fin width distribution along the longitudinal direction. Instead of uniform fins, the fin widths are deliberately varied to break the periodicity that causes rattling. This asymmetric design ensures that bulges do not consistently align with grooves, preventing the harmful rattling effect.
2Device complexity
If fin blocks with constant fin width are used, then the manufacturing process is simple, but periodic bulge patterns form on the profile surface causing rattling
Solution Approach 1:
The fin blocks employ variable fin widths along the longitudinal direction, creating local variations in the fin structure. This local quality change prevents the formation of periodic bulge patterns on the profile surface, thereby eliminating rattling while maintaining manufacturing feasibility through methods like 3D printing or conventional machining.
3Object-affected harmful factors
If variable fin widths are used, then rattling is prevented by eliminating periodic bulge patterns, but the manufacturing complexity increases
Solution Approach 1:
The fin blocks utilize changes in the fin width parameter along the longitudinal direction to eliminate periodic bulge patterns. By varying this geometric parameter, the design prevents rattling. The patent notes that this can be achieved through 3D printing or conventional manufacturing methods, balancing the increased design complexity with manufacturing feasibility.
Data Source
AI summary
A fin block is provided for a calibrating device for the calibrating of an extruded profile. The fin block includes a fin structure, which has a plurality of fins which are spaced apart from one another by grooves and are arranged in longitudinal direction of the fin block, wherein the fins of the fin structure have a variable dimension in longitudinal direction of the fin block. Further, there is provided a method for the production of the above-mentioned fin block and a calibrating device, which includes a plurality of the above-mentioned fin blocks. Furthermore, there is provided a system for the additive manufacture of the above-mentioned fin block, a corresponding computer program and corresponding data set.