Method for 3D printing of thin-shell workpiece
阅读说明:本技术 3d打印薄壳工件的方法 (Method for 3D printing of thin-shell workpiece ) 是由 周佩吟 于 2019-09-25 设计创作,主要内容包括:本发明揭露一种3D打印薄壳工件的方法,乃于成型所需薄壳工件前,先将支撑件成型于成型治具之成型槽中,然后再将薄壳工件成型于支撑件上,利用支撑件可水解的特性,再来将薄壳工件予以分离,而能避免因打印成型方向受到重力拉伸影响,而导致变形以及所衍生各种尺寸公差、曲率不符、厚薄不均、光学异常等问题。(The invention discloses a method for 3D printing a thin-shell workpiece, which is characterized in that before the thin-shell workpiece is formed, a support is formed in a forming groove of a forming jig, then the thin-shell workpiece is formed on the support, and the thin-shell workpiece is separated by utilizing the hydrolyzable characteristic of the support, so that the problems of deformation, various derived dimensional tolerances, inconsistent curvatures, uneven thicknesses, optical anomalies and the like caused by the fact that the printing and forming direction is influenced by gravity tension can be avoided.)
1. A method of 3D printing thin shell workpieces, comprising the steps of:
providing a forming jig, wherein the forming jig is provided with a forming groove;
forming a support material in the forming groove of the forming fixture;
forming a thin shell workpiece in the forming groove of the forming fixture and on the supporting material;
removing the support material; and
obtaining the thin-shell workpiece.
2. The method of 3D printing a thin-shelled workpiece as recited in claim 1, wherein the thin-shelled workpiece has at least one curved surface.
3. The method according to claim 1, wherein the thin-shell workpiece is only contacted with the supporting material and not contacted with the forming fixture.
4. The method of 3D printing a thin-shelled workpiece recited in claim 1, wherein the support material is a hydrolyzed material.
5. The method of 3D printing a thin-shelled workpiece as recited in claim 4, wherein the support material is SUP706 soluble material.
6. The method of 3D printing a thin shell workpiece as claimed in claim 4, wherein the step of removing the supporting material comprises dissolving the supporting material by placing the forming fixture together with the supporting material and the thin shell workpiece in water.
Technical Field
The present invention relates to a 3D printing method, which is applied to various printed and formed workpieces, and more particularly, to a method for 3D printing a thin-shell workpiece by using a pre-forming support to prevent the thin-shell workpiece from deforming during the forming process.
Background
In recent years, with the maturity of 3D printing technology, 3D printing technology has been widely applied to various industries, and especially, electronic products with extremely high replacement speed are replaced by more than one, especially 3D printing technology is mainly applied to printing a required product in a way of stacking molding materials layer by layer. The 3D printing has no trouble, and the printing production can be carried out by directly modeling by computer software, so that the process and the cost of the conventional mold opening are saved, and the adjustment and the change on the subsequent design are more flexible and convenient.
Currently, 3D printing technologies can be broadly divided into three 3D printing technologies, i.e. hot melt lamination, photo-curing molding and laser powder sintering, according to the forming technology and material. Among them, the photo-curing molding method mainly uses a photo-curing material as a raw material, and uses a light source such as a UV laser to irradiate the material to cure the material layer by layer for stacking molding, and thus, is very suitable for precision or complicated and tiny parts.
However, in general, the state of the finished workpiece is affected by the printing and forming direction, the characteristics of the photo-curing material, the geometric shape design and other factors. For example, if a soft resin is used as the light curing material, referring to fig. 1A, during molding, the molded
Disclosure of Invention
In view of the above, the present invention is directed to a method for 3D printing a thin-shell workpiece, which can effectively reduce or eliminate the abnormal deformation of the thin-shell workpiece caused by the influence of gravity, so as to solve the related problems, thereby increasing the production yield.
In order to achieve the purpose, the invention provides a method for 3D printing of a thin-shell workpiece, which comprises the following steps of firstly providing a forming jig with a forming groove; then, forming a support material in a forming groove; then, forming the thin shell workpiece on the supporting material in the forming groove of the forming jig; after the completion, the supporting material is removed continuously, and the thin shell workpiece is obtained.
According to an embodiment of the present invention, the thin-shell workpiece has at least one curved surface.
According to the embodiment of the invention, the thin-shell workpiece only contacts the supporting material, but not contacts the forming fixture.
According to an embodiment of the invention, the support material is made of a hydrolysable material, such as SUP706 soluble material.
According to an embodiment of the present invention, the step of removing the supporting material is to put the forming fixture together with the supporting material and the thin shell workpiece into water to dissolve the supporting material.
Therefore, the thin-shell workpiece can be supported by the supporting material in the forming process and cannot be pulled and deformed under the influence of gravity, so that the problems of deformation of the thin-shell workpiece in the 3D printing process and subsequent derivation can be solved.
The purpose, technical content, features and effects of the present invention will be more readily understood through the detailed description of the embodiments below.
Drawings
Fig. 1A is a schematic diagram of a conventional 3D printed thin-shell workpiece.
Fig. 1B is a schematic diagram of the curved surface deformation of a conventional 3D printed thin-shell workpiece.
Fig. 2 is a schematic step diagram of a method for 3D printing a thin-shell workpiece according to the present invention.
FIG. 3 is a schematic diagram of a forming fixture for 3D printing a thin-shell workpiece according to the present invention.
Fig. 4 is a schematic view of a forming jig for 3D printing a thin-shell workpiece according to the present invention, which shows a supporting member formed in a forming groove.
Fig. 5 is a schematic diagram of a forming jig for 3D printing a thin-shell workpiece according to the present invention, which illustrates the thin-shell workpiece formed in a forming groove.
FIG. 6 is a schematic diagram of a forming tool of the method for 3D printing thin-shell workpieces according to the present invention, showing a state of removing the supporting material.
FIG. 7 is a schematic diagram of a thin-shell workpiece according to the present invention.
Reference numerals:
10 formed workpiece
30 forming jig
31 forming groove
40 support material
50 thin shell workpiece
Detailed Description
The present invention discloses a method for 3D printing thin-shell workpieces, please refer to fig. 2, which is a flow chart illustrating steps of the method for 3D printing thin-shell workpieces according to the present invention.
First, a forming
Subsequently, the supporting
Next, the thin-
After the forming is completed, the supporting
Therefore, referring to fig. 7, the obtained thin-
In summary, the method for 3D printing a thin shell workpiece according to the present invention is to form a thin shell workpiece by a co-printing method, and is particularly suitable for designing 3D or biaxial curved products, and can reduce deformation caused by printing direction or gravity, and can quickly print a thin shell product with a thickness t greater than 0.6mm, and further, the problems of no tolerance and inconsistent dimension are solved, and post-processing is not required, so that time and additional cost are saved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Therefore, all the equivalent changes or modifications according to the features and the spirit described in the scope of the application of the present invention should be included in the scope of the application of the present invention.
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