Sealed Galvano Scanner Structure for Dust Protection and Rigidity
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Solution Overview
Problem
Laser machining devices with galvano scanners require improved airtightness and rigidity to protect the internal components from dust and external forces, especially when used in remote machining applications with moving mechanisms.
Innovation Solution
A galvano scanner design featuring a galvano unit with a mirror and drive mechanism mounted on a base member, surrounded by an outer peripheral member, and attached to a frame member via a sealing member, enhancing airtightness and rigidity while allowing for easy maintenance and exchange of parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the galvano scanner is designed with improved airtightness to protect internal components from dust, then the protection against dust and external forces is improved, but the device complexity increases
Solution Approach 1:
The galvano scanner is divided into separate functional modules: the galvano unit (with mirror and drive mechanism) mounted on a base member, and the outer peripheral member surrounding the galvano unit. This segmentation allows the airtight enclosure to be implemented specifically around the dust-sensitive galvano unit without unnecessarily complicating the entire device structure.
Solution Approach 2:
A sealing member is introduced as an intermediary component between the base member and the outer peripheral member to achieve airtightness. This sealing member creates the dust-proof barrier without requiring complex integration of sealing features into the main structural components, thereby reducing overall device complexity while maintaining reliability.
2Strength
If the galvano scanner structure is reinforced to withstand external forces during collisions, then the strength and rigidity are improved, but the device complexity increases
Solution Approach 1:
The frame member serves a dual function by simultaneously providing structural support for the galvano unit and acting as a rigid frame to withstand external forces during collisions. This merging of support and structural functions into a single component achieves the required strength and rigidity without adding separate reinforcement structures, thereby avoiding increased device complexity.
Solution Approach 2:
The outer peripheral member is designed to perform multiple functions: it surrounds and protects the galvano unit, provides structural rigidity to resist external forces, and works with the sealing member to maintain airtightness. This multi-functionality reduces the need for additional specialized components, maintaining device simplicity while achieving the required strength.
3Reliability
If the galvano unit is mounted on a base member with outer peripheral member surrounding it, then the airtightness is improved, but the ease of manufacture decreases
Solution Approach 1:
The galvano scanner is segmented into the base member (with mounted galvano unit), the outer peripheral member (surrounding the galvano unit), and the sealing member. This segmentation allows each component to be manufactured separately using standard manufacturing processes, and then assembled together to achieve the airtight enclosure, making the overall manufacturing process more accessible and easier to implement.
Solution Approach 2:
The sealing member acts as an intermediary that achieves airtightness through a simple attachment relationship between the base member and outer peripheral member. This approach avoids the need for complex integrated sealing structures or specialized manufacturing processes, allowing the airtight enclosure to be achieved through straightforward assembly of separately manufactured components.
Data Source
AI summary
A galvano scanner that performs scanning with a laser beam according to the present invention includes a galvano unit having a mirror and a mirror drive mechanism, a base member on which the galvano unit is mounted, an outer peripheral member disposed so as to surround the galvano unit, and a frame member to which the base member and the outer peripheral member are attached, and is configured such that the base member and the outer peripheral member are attached to the frame member via a sealing member.