Stereolithography apparatus for preventing adhesion of a 3D-object to the vat through oscillatory excitations
US12064918B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 11, 2020 |
| Grant date | Aug 20, 2024 |
| Priority date | — |
| Expiry date | Mar 12, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB33Y40/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A stereolithography apparatus for generating a three-dimensional object from a photocurable substance, that includes: a vat for storing the photocurable substance; and a platform for supporting the three-dimensional object, wherein the platform is movable relative to the vat; an optical unit for sequentially projecting layered images towards the photocurable substance for hardening the photocurable substance deposited between the three-dimensional object and the bottom of the vat; and further includes: an oscillation unit adapted to horizontally oscillate the vat concomitantly with the projection of the layered images with a substantially constant amplitude that is smaller than the pixel size of the layered images in the horizontal direction for preventing adhesion of the three-dimensional object to the bottom of the vat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.