Bionic Cylinder Block Flow Channels for Lightweight Hydraulic Drives
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Solution Overview
Problem
Traditional manufacturing methods for hydraulic drive devices, such as machining, require detailed drawings and result in complex, heavy structures with high production cycles, leading to sealing issues and leakage failures, while additive manufacturing lacks efficient design methods for high-performance hydraulic drive devices.
Innovation Solution
A bionic flow channel design method for additive manufacturing cylinder blocks, which determines energy requirements, radius, and branch angles to optimize flow channel structures, reducing weight and complexity, and integrating bionic flow channels into servo cylinders and valves to eliminate external connections and enhance strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional machining methods are used to manufacture cylinder blocks, then manufacturing precision and reliability are improved, but device complexity and weight increase, and production cycle is extended
Solution Approach 1:
The patent merges the cylinder block with integrated flow channels into a single additive manufacturing component. The flow channels are directly formed within the cylinder block structure, eliminating the need for separate channel components and multiple assembly operations. This integration reduces the number of sealing interfaces and simplifies the overall device structure while maintaining manufacturing precision through additive manufacturing capabilities.
Solution Approach 2:
The patent utilizes the third dimension in additive manufacturing to create complex internal flow channel structures that cannot be achieved through traditional machining. The flow channels are designed with optimized three-dimensional paths, varying cross-sections, and integrated features that leverage the layer-by-layer construction capability of additive manufacturing to reduce weight and complexity while improving performance.
2Manufacturing precision
If traditional machining methods are used to manufacture cylinder blocks, then manufacturing precision is improved, but production cycle and weight increase
Solution Approach 1:
The patent employs preliminary digital modeling and simulation of the flow channels using computer-aided design software before additive manufacturing. The flow channel geometry is optimized through computational fluid dynamics analysis and topology optimization algorithms, allowing the complex three-dimensional structures to be prepared in advance. This preliminary digital preparation enables precise control of the additive manufacturing process, achieving high manufacturing precision while significantly reducing the actual production cycle compared to traditional machining methods.
3Weight of moving object
If additive manufacturing is used to manufacture hydraulic drive devices, then weight is reduced and production cycle is shortened, but design methods for high-performance devices are lacking
Solution Approach 1:
The patent applies topology optimization and generative design methods to determine the optimal geometric parameters of the flow channels for additive manufacturing. These methods systematically vary parameters such as channel diameter, wall thickness, branching angles, and curvature radii to minimize weight while maintaining hydraulic performance requirements. The design process incorporates material distribution optimization to place material only where structurally necessary, achieving significant weight reduction with available additive manufacturing design methodologies.
Data Source
AI summary
The present invention relates to a bionic flow channel design method for additive manufacturing cylinder block and its hydraulic drive device , which includes the following steps: Step 1: determine the energy required to transfer liquid through bionic flow channels; Step 2: determine the radius of the bionic flow channel; Step 3: determine the branch angle of the bionic flow channel; Step 4: determine the structure of the bionic flow channel and complete the manufacture of the hydraulic drive device.