Powder Dispenser Isolation for Accurate Additive Manufacturing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional additive manufacturing machines face accuracy issues due to vibrations in the powder dispenser, which can affect the precision of the energy source during the additive manufacturing process.
Innovation Solution
A vibration isolation device is positioned between the powder dispenser and the scan unit to prevent vibrations from transferring and causing operational inaccuracies, using either passive rubber dampers or active vibration canceling mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a vibration mechanism is attached to the powder dispenser to prevent clogging and ensure even powder deposition, then powder dispensing reliability is improved, but vibrations are transferred to the scan unit affecting energy source accuracy
Solution Approach 1:
A vibration isolation device is positioned between the powder dispenser and the scan unit to act as an intermediary element. This device absorbs and dampens vibrations generated by the vibration mechanism in the powder dispenser, preventing them from transferring to the scan unit and affecting energy source accuracy, while still allowing the vibration mechanism to function effectively for powder dispensing
2Device complexity
If the powder dispenser is coupled directly to the scan unit for compact design, then device complexity is reduced, but vibration isolation capability is lost
Solution Approach 1:
The vibration isolation device is integrated into the coupling between the powder dispenser and scan unit. It maintains the compact direct coupling design while introducing vibration-dampening properties, thus preserving structural simplicity while eliminating harmful vibration transmission
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
The vibration isolation device ensures accurate focusing of the energy beam, maintaining the precision of the energy source and improving the overall additive manufacturing process by minimizing the impact of vibrations on the scan unit.
Implementation Method 1
A vibration isolation device is positioned between and couples the powder dispenser and the scan unit
Data Source
AI summary
An additive manufacturing machine (900) includes a build unit (904) that is supported by an overhead gantry (918). The build unit (904) includes a powder dispenser (906) including a vibration mechanism (922) and a scan unit (908) including a powder fusing device (910) for fusing or binding portions of a layer of additive powder. A vibration isolation device (932), such as a passive rubber damper (940) or an active vibration canceling mechanism (960), is positioned between the powder dispenser (906) and the scan unit (908) to prevent vibrations in the powder dispenser (906) from causing operational issues with the scan unit (908) and inaccuracies in the additive manufacturing process.