Casting Mold Positioning via Curable Resin Fixation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for positioning and fixing mold parts in casting molds are labor-intensive, costly, and prone to errors, leading to inaccuracies and increased reject rates due to rigid core marks and clamping elements, which can cause stress and breakage, and require complex post-processing and costly measuring techniques.
Innovation Solution
The method involves using CAD data to precisely position and fix mold parts by filling recesses in the mold with molding material, allowing for accurate alignment and fixation without core marks or clamping elements, using optical measuring systems to ensure precise geometry alignment, and removing the need for complex post-processing and costly measuring methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If rigid guides with core marks are used for positioning molded parts, then positioning accuracy is achieved, but the molded parts are subjected to increased stresses that can cause breakage
Solution Approach 1:
The patent introduces a positioning device as an intermediary component between the rigid guides and the molded parts. This positioning device absorbs and distributes the positioning forces, preventing direct stress concentration on the molded parts while maintaining accurate positioning through the intermediary mechanism
Solution Approach 2:
The patent changes the mechanical parameters of the positioning system by introducing compliant elements and adjustable mechanisms in the positioning device. This allows the system to maintain positioning accuracy while reducing the rigidity that causes stress, effectively changing the force transmission characteristics
2Stability of the object's composition
If clamping elements are used to fix molded parts in position, then positioning stability is improved, but assembly complexity and cost increase
Solution Approach 1:
The patent combines the positioning and clamping functions into a single integrated positioning device. The positioning device simultaneously performs both positioning and securing functions, eliminating the need for separate clamping elements and reducing overall assembly complexity
Solution Approach 2:
The positioning device is designed with multi-functionality, serving as both a positioning mechanism and a clamping mechanism. This universal component achieves positioning stability without requiring additional specialized clamping elements
3Manufacturing precision
If core marks and post-processing are used for positioning, then positioning accuracy is achieved, but labor time and production cost increase
Solution Approach 1:
The positioning device is pre-configured with precise geometric features during manufacturing that automatically ensure accurate positioning when assembled. This preliminary preparation eliminates the need for time-consuming post-processing of core marks and enables direct assembly with accurate positioning
Solution Approach 2:
The positioning device incorporates self-aligning features and self-adjusting mechanisms that automatically achieve accurate positioning during assembly without requiring manual measurement, adjustment, or post-processing operations
4Measurement precision
If optical or tactile measuring devices are used to check positioning, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The positioning device incorporates reference features and geometric copies of the target positioning geometry directly into its structure. These built-in reference features serve as physical copies of the desired position, allowing for simple visual or basic measurement verification without requiring complex optical or tactile measuring systems
Data Source
Figure 1a~1c
Figure 2
Figure 3~4b
AI summary
The invention relates to a method for positioning and fixing moulded parts in casting moulds, which comprise a plurality, but at least two, separate mould parts. The aim of the invention is to provide a method by means of which a mould part for a casting mould can be exactly positioned and fixed in position in a simple manner. This should result in the moulding geometry of the individual mould parts of a multi-part casting mould aligning substantially exactly with the desired geometry according to a CAD data set. Furthermore, the actual position of the moulding geometry of the completely assembled mould should be determined in order on the basis of said data to enable the dimensional accuracy of the cast part to be produced to be evaluated. The aim is achieved in that first of all the actual geometry and the actual position of a first mould part are measured and compared with the predefined CAD data set of said mould part, then the actual position and the desired position of said mould part relative to one another are corrected in such a manner that the moulding geometry is adjusted within predefined tolerances to the desired geometry corresponding to the predefined CAD data set, then the mould part remains in said position, which is subsequently used as the reference basis for positioning further mould parts, wherein for further mould parts the actual geometry and the actual position are likewise measured and compared with the predefined CAD data set and then the respective actual position is corrected in such a manner that the moulding geometry is adjusted within predefined tolerances to the desired geometry in accordance with the CAD data set, and the mould parts have though-holes provided in all mould parts, which are in operative connection with adjacent mould parts and which are filled with a curable moulding substance which then cures and thus fixes the mould parts in the position corrected in accordance with the predefined CAD data set.