Centrifugal Casting Mold Positioning via Segmented Insulation
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Solution Overview
Problem
Conventional centrifugal casting apparatuses face complications in mold attachment due to time-consuming operations involving ceramic heat insulation material filling or lashing, which can lead to mold temperature drops and casting defects.
Innovation Solution
A centrifugal casting apparatus with multiple mold positioning members and corresponding insertion holes on the mold holder and mold base, allowing for easy engagement and positioning of the preheated mold, reducing the complexity and time required for attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mold is positioned and fixed by filling ceramic heat insulation material in the gap between the cylindrical tube and the mold, then the mold can be securely fixed, but the operation becomes complicated and time-consuming
Solution Approach 1:
The invention divides the mold holder into distinct functional components: a cylindrical tube for structural support, a separate flat plate-shaped heat insulation member for thermal management, and multiple positioning members for precise localization. This segmentation allows each component to perform its specific function independently, simplifying the overall attachment operation while maintaining reliability.
Solution Approach 2:
The invention introduces positioning members as intermediary elements that facilitate the connection between the mold and mold holder. These positioning members engage with positioning holes to securely locate the mold without requiring complex filling operations, thus reducing operational complexity while ensuring reliable fixation.
2Reliability
If the mold is lashed with a belt for positioning and fixing, then the mold can be secured to the rotary table, but the attachment operation becomes complicated and time-consuming
Solution Approach 1:
The invention replaces the single complex lashing operation with multiple simple engagement actions between positioning members and positioning holes. This segmentation of the fixation process into discrete, easy-to-perform steps significantly improves ease of operation while maintaining secure mold fixation.
Solution Approach 2:
The invention substitutes the complex mechanical lashing system with a simpler engagement system based on positioning members and holes. This replacement eliminates the need for belts and lashing operations, making the attachment process much easier while ensuring reliable mold securing.
3Reliability
If complicated attachment operations are performed on a preheated mold, then the mold can be securely fixed, but the mold temperature drops significantly causing casting defects
Solution Approach 1:
The invention incorporates positioning holes and positioning members as pre-designed features that enable quick engagement of the preheated mold. By preparing the positioning structure in advance, the mold can be rapidly attached without prolonged exposure to ambient conditions, thus minimizing temperature drop and preventing casting defects.
Solution Approach 2:
The invention enables the attachment operation to be completed quickly by using the simple engagement mechanism of positioning members and holes. This rapid attachment process allows the preheated mold to be secured before significant cooling occurs, effectively skipping the time-consuming steps that would cause temperature loss.
4Ease of operation
If multiple positioning members and insertion holes are used for mold attachment, then the mold can be easily and quickly positioned, but the device structure becomes more complex
Solution Approach 1:
The positioning members and positioning holes serve multiple functions: they locate the mold precisely, secure the mold during rotation, and maintain alignment throughout the casting process. This multi-functionality justifies the additional structural elements, as they provide comprehensive benefits that outweigh the increased complexity.
Data Source
AI summary
A centrifugal casting apparatus (10) includes a mold holder (14) placed on a freely rotatable rotary table (12), and a mold (16) put into and held by the mold holder. The mold holder includes a mold holder body (18) made of a metal material and having a bottomed cylindrical shape, heat insulation members (26, 28) provided on an inner peripheral surface and a bottom surface of the mold holder body, and mold positioning members (34, 36) each made of a ceramic and provided to protrude from the heat insulation member on the bottom surface of the mold holder body. The mold includes a mold body (44) having a cavity into which a molten metal is to be poured, and a mold base (46) provided to the mold body and having mold positioning member insertion holes engageable with the mold positioning members.