Adjustable Storage Rack Attachments for Platform Flatness
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Solution Overview
Problem
Conventional storage racks for semiconductor substrates face issues with platform flatness due to displacement of attachment plates and machining inaccuracies, requiring high precision and skill for manufacturing, which can lead to unstable placement of articles.
Innovation Solution
A storage device with a platform supported by rotatable attachments that can be adjusted along the side surfaces of pillars, allowing for easy correction of flatness through a larger hole design and contact points, enabling stable rotation and alignment without deforming the platform.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the platform is firmly positioned to the pillars using recessed grooves, then the structural stability is improved, but the flatness of the platform body increases due to displacement of attachment plates and machining inaccuracies
Solution Approach 1:
The attachment plate is designed to be rotatable relative to the support along the side surface, transforming a static rigid connection into a dynamic adjustable one. This allows the attachment plate to rotate and adjust the platform's position to compensate for machining inaccuracies and displacement, thereby maintaining platform flatness while preserving structural stability through the rotatable connection mechanism.
2Manufacturing precision
If recessed grooves are machined with high precision to ensure platform flatness, then the manufacturing precision is improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The invention changes the design parameter from requiring high-precision recessed grooves to using a rotatable attachment mechanism with a larger hole design. This parameter change allows the use of less precise machining while achieving the same functional outcome through the rotational adjustment capability of the attachment plate, thereby reducing manufacturing complexity and skill requirements.
3Ease of operation
If the hole area is made larger than the shaft part cross-section, then the ease of operation for adjusting flatness is improved, but the stability of the attachment may be reduced
Solution Approach 1:
The attachment system is segmented into the support, the rotatable attachment plate, and the shaft part, allowing independent optimization of each component. The attachment plate can be designed with a larger hole for easy rotational adjustment while the shaft part maintains the connection stability, separating the adjustment function from the fixation function and resolving the contradiction between ease of operation and attachment stability.
Data Source
AI summary
A storage device includes a pair of supports each extending in an up-and-down direction and spaced apart in a first direction; a pair of attachments each attached to a side surface by a fixing member having a shaft part, the side surface being a surface of each of the pair of supports and facing the first direction; and a platform supported by the pair of attachments and on which an article is to be placed, wherein each of the pair of attachments has a hole through which the shaft part is disposed, and an area of the hole is larger than an area of a cross-section of the shaft part orthogonal to an axial direction of the shaft part to such an extent that the pair of attachments are rotatable along the side surfaces of the pair of supports.