Computed Tomography Drum Base Body Segmentation
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Solution Overview
Problem
The existing base bodies of computed tomography drums produced through sand casting processes face issues such as rough surfaces, high tolerance intervals, potential undetectable faults like cavities and cracks, deformation due to low modulus of elasticity, and high postprocessing requirements, which affect stability and require significant effort for design changes.
Innovation Solution
A base body composed of separately producible components like a base plate, outer ring, and inner ring, connected through methods like bonding, welding, or clinching, which can be produced from sheet metal to reduce deformation and allow for easier design adaptations, thereby enhancing stability and reducing production complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If sand casting process is used to produce base body, then production capability is achieved, but surface quality is rough and tolerance interval is high
Solution Approach 1:
The base body is divided into multiple separately producible components (base plate, outer ring, inner ring) that can be manufactured independently and then assembled. This segmentation allows each component to be produced with appropriate precision using suitable methods, avoiding the need to produce the entire base body as a single casting, thereby resolving the contradiction between production capability and manufacturing precision.
2Ease of manufacture
If sand casting process is used to produce base body, then production capability is achieved, but postprocessing effort is high
Solution Approach 1:
By segmenting the base body into separately producible components, each component can be manufactured to near-final dimensions with minimal postprocessing. The modular design allows components to be assembled without extensive machining or finishing work, significantly reducing postprocessing effort while maintaining production capability.
3Ease of manufacture
If aluminum-silicon casting alloy is used for base body, then production capability is achieved, but modulus of elasticity is low causing deformation
Solution Approach 1:
The base body is constructed from multiple components that can be made from different materials with complementary properties. This composite structure allows selection of materials optimized for both manufacturability and mechanical performance, including higher modulus of elasticity materials, thereby reducing deformation while maintaining production capability.
4Ease of manufacture
If base body is made as single cast component, then production capability is achieved, but design change effort is high
Solution Approach 1:
The base body is divided into separately producible components that can be independently designed and manufactured. This modular architecture enables design changes to be implemented by modifying individual components rather than redesigning the entire base body, significantly reducing design change effort while maintaining production capability through standardized assembly processes.
5Ease of manufacture
If sand casting process is used to produce base body, then production capability is achieved, but stability during rotation is reduced
Solution Approach 1:
By producing the base body as separately manufacturable components with precise geometries and proper material selection, the assembled structure achieves higher overall stability during rotation compared to a single sand-cast component. The modular construction allows for better control of mass distribution and reduced internal defects, improving rotational stability while maintaining production capability.
Data Source
AI summary
A base body of a computed tomography drum is disclosed. In an embodiment, the base body includes at least the following components: a base plate, an outer ring and an inner ring. The inner ring is arranged concentrically with the outer ring. The outer ring and the inner ring are arranged on the base plate. At least two of the components are configured as separately producible components. Two of the separately producible components are connected to one another by way of at least one of: bonding, welding, riveting, clinching, clinch-bonding and/or rivet-bonding.