A 3D printing method and system based on holographic projection

A holographic projection and 3D printing technology, which is applied in the field of 3D printing methods and systems based on holographic projection, can solve the problems of poor forming effect and precision, and the inability to make complex structures, and achieve the goals of shortening forming time, improving work efficiency and forming precision Effect

Active Publication Date: 2021-06-08
SHENZHEN UNIV
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a 3D printing method and system based on holographic projection in view of the above-mentioned defects of the prior art, aiming to solve the processing problems brought about by the traditional additive manufacturing method of gradually accumulating printing in the prior art. Low efficiency, long processing time and other shortcomings, while overcoming the shortcomings of the existing one-time 3D molding technology that cannot make complex structures, poor molding effect and precision

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  • A 3D printing method and system based on holographic projection
  • A 3D printing method and system based on holographic projection
  • A 3D printing method and system based on holographic projection

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Embodiment Construction

[0035] In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0036] 3D printing technology was born in the late 1980s. It is a high-tech manufacturing technology based on the material accumulation method. It is considered to be a major achievement in the manufacturing field in the past 20 years. It integrates mechanical engineering, CAD, reverse engineering technology, layered manufacturing technology, numerical control technology, material science, and laser technology, and can automatically, directly, quickly and accurately transform design ideas into prototypes with certain functions or directly manufacture parts , so as to provide a high-effic...

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Abstract

The invention discloses a 3D printing method and printing system based on holographic projection; the printing method includes: prefabricating a holographic dry plate with a hologram of an object to be printed; coherent light emitted by a coherent light source along a preset holographic projection imaging The optical path passes through the holographic dry plate, and forms a three-dimensional real image corresponding to the object to be printed in the preset projection space; the three-dimensional real image makes the photosensitive material preset in the projection space polymerized and solidified at one time, forming A three-dimensional structural object whose size and appearance are consistent with the three-dimensional real image. In the present invention, a photosensitive material matching the light intensity distribution of the three-dimensional real image is set in the projection space to realize one-time omnidirectional three-dimensional polymerization, thereby realizing the one-time completion of the forming process of complex structural samples without going through point- Line-surface-body gradually and continuously accumulates the forming process, which greatly shortens the forming time and improves work efficiency and forming accuracy.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to a 3D printing method and system based on holographic projection. Background technique [0002] 3D printing is a common name for additive manufacturing. Its core is the combination of digital, intelligent manufacturing and material science. It is the opposite of the traditional subtractive manufacturing method of machining and cutting raw materials. [0003] Now there are different methods of 3D printing technology on the market, the common ones are: FDM (fused deposition), SLA (light curing), SLS (selective laser sintering), DLP (digital light processing), etc. The process is only a way of cumulative printing step by step, that is, it is necessary to layer the print sample data, then start printing from points, to lines, to surfaces, and finally superimpose layers on three-dimensional entities (DLP is directly from surface to body. printing process). This will re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C64/135B29C64/264B33Y10/00B33Y30/00
CPCB33Y10/00B33Y30/00B29C64/135B29C64/264
Inventor 劳长石陈张伟何奕卢振危岩
Owner SHENZHEN UNIV
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