3D Shaping Stage Flatness Control via Intermediary Reference Surface
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Solution Overview
Problem
The flatness of heating units in existing three-dimensional shaping apparatuses can influence the flatness of shaping stages, affecting shaping accuracy, as the shaping stage is often placed directly on the heaters, leading to potential inaccuracies in the shaping process.
Innovation Solution
A three-dimensional shaping stage is designed with a placement portion having an adjusted reference surface, a heating unit positioned below, and a pressing unit to minimize the influence of the heating unit's flatness on the shaping stage, along with a holding unit to maintain the stage's position relative to the reference surface, ensuring uniform temperature distribution and preventing the stage from biting into the holding unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the shaping stage is placed directly on the heating unit, then heating efficiency is improved, but the flatness of the shaping stage is affected by the flatness of the heating unit
Solution Approach 1:
A reference surface is introduced as an intermediary component between the heating unit and the shaping stage. The reference surface has high flatness precision and serves as the support for the shaping stage, while the heating unit is positioned below it. This intermediary structure allows the heating unit to efficiently heat the shaping stage without directly contacting it, thereby decoupling the flatness requirement of the heating unit from the flatness requirement of the shaping stage.
2Manufacturing precision
If the heating unit is positioned below the shaping stage, then the flatness influence is reduced, but the heating effectiveness may be compromised
Solution Approach 1:
The reference surface acts as a thermal transmission intermediary. It receives heat from the heating unit positioned below and transmits it to the shaping stage while maintaining its own high flatness. This allows the heating unit to be positioned below the shaping stage without compromising heating effectiveness, as the reference surface ensures both thermal transmission and dimensional precision.
3Manufacturing precision
If multiple components are added to separate the heating unit from the shaping stage, then flatness precision is improved, but device complexity increases
Solution Approach 1:
The reference surface is designed to perform multiple functions simultaneously: it serves as the support structure for the shaping stage, provides the high flatness reference plane, and acts as a thermal transmission medium from the heating unit. By making this single component multi-functional, the design achieves improved flatness precision without proportionally increasing device complexity.
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 configuration reduces the impact of the heating unit's flatness on the shaping stage's flatness, enhancing shaping accuracy by maintaining uniform temperature distribution and preventing the stage from floating or becoming misaligned, thus improving the overall shaping process.
Implementation Method 1
a heating unit that is disposed below the shaping stage and that is configured to heat the shaping stage
Implementation Method 2
a pressing unit configured to press the heating unit against the shaping stage via the opening
Data Source
AI summary
A three-dimensional shaping stage includes: a placement portion that includes an opening and a reference surface whose flatness is adjusted; a shaping stage that is placed at the reference surface so as to cover the opening and that includes a shaping surface at which shaping layers are stacked; a heating unit that is disposed below the shaping stage and that is configured to heat the shaping stage; a pressing unit configured to press the heating unit against the shaping stage via the opening; and a holding unit configured to relatively hold the shaping stage to the reference surface.