Cast Workpiece Energy Transmission Surface for Mold Core Shattering
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Solution Overview
Problem
Existing methods for removing mold cores from cast workpieces often result in damage due to the lower solidity of the workpiece at higher temperatures, which compromises the efficiency and quality of the production process.
Innovation Solution
A method where the mold core is shattered using a hammer head on a predetermined energy transmission surface of the workpiece, which is designed to have higher solidity and can withstand the process without deformation, allowing for removal at increased temperatures and optimizing the production process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the mold core is shattered at higher temperatures to improve production efficiency, then the productivity increases, but the workpiece structure solidity decreases causing damage
Solution Approach 1:
The patent applies local quality by creating a specific region on the workpiece surface (the energy transmission surface) that is designed to have higher solidity than other areas. This localized reinforcement allows the workpiece to withstand the mechanical impacts of core shattering at elevated temperatures without compromising overall production efficiency. The energy transmission surface is specifically positioned and dimensioned to receive hammer blows while maintaining structural integrity.
Solution Approach 2:
The patent implements preliminary action by designing and preparing the energy transmission surface before the core shattering process begins. This surface is predetermined during workpiece construction or simulation, allowing the workpiece to be ready to withstand the upcoming thermal and mechanical stresses. The surface geometry and material properties are optimized in advance to handle the core removal operation at higher temperatures.
2Manufacturing precision
If the energy transmission surface is subjected to mechanical processing to remove deformations, then the manufacturing precision is improved, but the additional processing time increases
Solution Approach 1:
The patent converts the potential harm of surface deformations caused by hammer impacts into a benefit by designing a workflow where these deformations are intentionally accepted during high-temperature core shattering, then systematically removed in subsequent controlled machining operations. The energy transmission surface is specifically chosen because it can be effectively processed later without affecting critical functional areas of the workpiece. This approach allows efficient core removal at high temperatures while maintaining final surface quality through planned post-processing.
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
This method enables the efficient removal of mold cores at higher temperatures without damaging the workpiece, improving the production efficiency and allowing for subsequent processing steps to correct any deformations, thereby enhancing the quality of the cast workpieces.
Implementation Method 1
a hammer head is applied on a defined energy transmission surface of the workpiece and the energy transmission surface is acted on, in particular hit on, by means of the hammer head
Implementation Method 2
at least the outer contour of the metal melt has solidified and the workpiece is formed from the metal melt
Implementation Method 3
After solidification and cooling of the metal melt, the workpiece is demolded
Data Source
AI summary
A method for producing a cast workpiece includes the following method steps: providing a mold having at least one mold core arranged in the mold; inserting a metal melt into the mold; waiting for a period of time until at least the outer contour of the metal melt has solidified and the workpiece has been formed from the metal melt; removing the workpiece from the mold; shattering the mold core, wherein this method step is carried out before the workpiece has entirely cooled down from the casting process. For shattering the mold core, a hammer head is applied on a defined energy transmission surface of the workpiece and the energy transmission surface is acted on, in particular hit on, by the hammer head.