Additive Manufacturing of Vacuum Pump Components
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Solution Overview
Problem
The production of vacuum pump components, particularly turbomolecular pump components, is cost-intensive and material wasteful due to complex geometries and high mechanical stress, which existing manufacturing methods struggle to address effectively.
Innovation Solution
The use of additive manufacturing processes, such as 3D printing, allows for the creation of complex components with reduced material waste and lower production costs by building components layer by layer from shapeless materials like powders, enabling the use of resilient materials like aluminum and titanium, and allowing for localized material combinations for enhanced mechanical load capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If traditional machining processes are used to produce vacuum pump components with complex geometries, then manufacturing precision can be achieved, but material waste exceeds 90% of the starting material
Solution Approach 1:
The patent applies additive manufacturing (3D printing) which inverts the traditional subtractive manufacturing approach. Instead of machining away 90%+ of material to create complex geometries, the process builds components layer-by-layer from powder material, achieving complex shapes with minimal material waste while maintaining manufacturing capability
Solution Approach 2:
The patent changes the fundamental manufacturing parameter from material removal (machining) to material addition (additive manufacturing). This parameter change transforms the material efficiency from <10% utilization to >90% utilization while enabling complex geometries that would be difficult or impossible to machine
2Strength
If high-strength materials are used to withstand high mechanical stress, then component strength is improved, but production cost increases
Solution Approach 1:
The patent applies selective laser melting technology that enables local material deposition and varying material properties within different regions of the component. This allows high-strength materials to be used only where mechanically stressed, while less expensive materials can be used in non-critical areas, reducing overall production cost while maintaining required strength
Solution Approach 2:
The additive manufacturing process enables the creation of composite structures with different materials in different regions of the same component. This allows optimization of material selection based on local mechanical requirements, achieving high strength where needed while minimizing overall material cost
3Shape
If complex component geometries are manufactured using traditional methods, then functional requirements are met, but production time and cost increase significantly
Solution Approach 1:
The patent inverts the manufacturing paradigm by using additive manufacturing to build complex geometries directly from digital models, eliminating the need for complex tooling, multiple machining operations, and assembly steps. This achieves both geometric complexity and high production efficiency simultaneously
Solution Approach 2:
The additive manufacturing process adds a temporal dimension to geometry creation, building components layer-by-layer in the vertical dimension rather than removing material from all sides simultaneously. This dimensional approach enables complex internal structures and geometries to be created efficiently in a single manufacturing process
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 rapid, cost-effective production of components with complex geometries and high mechanical resilience, reducing material expenditure and waste, while ensuring components can withstand high operational loads.
Implementation Method 1
The component is produced from at least one shapeless or shape-neutral material by means of chemical and/or physical processes in a generative or additive manufacturing process
Implementation Method 2
laser melting, laser sintering, selective laser sintering
Implementation Method 3
laser sintering, selective laser sintering
Data Source
Figure 1
Figure 2~3
AI summary
A method for manufacturing a component of a vacuum pump, in particular a turbomolecular pump or rotary lobe pump, is characterized in that the component is manufactured using an additive manufacturing process.