Three-dimensional selective repairing system, apparatus and application method thereof

Patent metadata

Field	Value
Publication number	US-2017348904-A1
Application number	US-201615236496-A
Country	US
Kind code	A1
Filing date	Aug 15, 2016
Priority date	Jun 1, 2016
Publication date	Dec 7, 2017
Grant date	—

Abstract

A three-dimensional selective repairing system, which is for selectively repairing an area of an unrepaired element by sintering, includes a scanning device, a comparing device, a spraying device and a sintering device. The scanning device is for scanning the area to obtain a repairing data. The comparing device is connected to the scanning device to receive the repairing data and produce a repairing parameter. The spraying device is controlled by the repairing parameter and includes an electrostatic generator which sprays a plurality of electrified pulverulent bodies through the electrostatic generator to form an electrified pulverulent film on a medium covered on the area. The sintering device is controlled by the repairing parameter to provide a power beam to selectively heat the electrified pulverulent film. The electrified pulverulent film melted or sintered to form a solid mass on the area.

First claim

What is claimed is:

1 . A three-dimensional selective repairing system, which is for selectively repairing an area of an unrepaired element by sintering, the area covered by a medium, the three-dimensional selective repairing system comprising:
a scanning device for scanning the area to obtain a repairing data; a comparing device connected to the scanning device to receive the repairing data and producing a repairing parameter after calculating; a spraying device controlled by the repairing parameter of the comparing device, the spraying device comprising:
an electrostatic generator, the spraying device spraying a plurality of electrified pulverulent bodies thought the electrostatic generator to form an electrified pulverulent film on the medium, the electrified pulverulent bodies coordinated with the medium to magnetically attach to the area; and
a sintering device controlled by the repairing parameter of the comparing device to provide a power beam to selectively heat the electrified pulverulent film, the electrified pulverulent film melted or sintered to form a solid mass on the area.

2 . The three-dimensional selective repairing system of claim 1 , wherein the spraying device and the sintering device are disposed at an outside of the area, and a providing direction of the electrified pulverulent bodies and a providing direction of the power beam are parallel or have an angle contained therebetween.

3 . The three-dimensional selective repairing system of claim 1 , further comprises a moving mechanism moved three-dimensionally relative to the unrepaired element, and a path of the moving device is according to the repairing parameter.

4 . The three-dimensional selective repairing system of claim 1 , wherein the sintering device uses selective laser sintering technique, selective laser melting technique or electron beam melting technique.

5 . The three-dimensional selective repairing system of claim 1 , wherein the power beam is an electric arc, an electron beam or a laser beam.

6 . The three-dimensional selective repairing system of claim 1 , wherein the electrified pulverulent bodies are made of metal material, alloy material, metal matrix composite material, polymer, magnetic ceramic material, non-ferromagnetic material or a combination thereof.

7 . The three-dimensional selective repairing system of claim 1 , wherein the medium is a plastic film or an insulating oil.

8 . The three-dimensional selective repairing system of claim 7 , wherein the medium is covered on the area by spraying or coating.

9 . The three-dimensional selective repairing system of claim 5 , wherein the electrostatic generator is a high-voltage electrostatic generator, the unrepaired element has positive electric charges, a negative electrostatic field is produced due to an ionization in an air around the area caused by the high-voltage electrostatic generator so as to attach the electrified pulverulent bodies to the unrepaired element with an interval of the medium.

10 . An application method for applying to the three-dimensional selective repairing system of claim 1 , comprising:
performing a scanning step to scan the area to obtain the repairing data by the scanning device; performing a comparing step to connect the comparing device to the scanning device to receive the repairing data, wherein the comparing device produces a repair parameter after comparing and calculating; performing a powder locating step, wherein the spraying device is moved base on the repairing parameter, and the spraying device is coordinated with the medium to allow the electrified pulverulent bodies to be magnetically disposed on the area and form the electrified pulverulent with certain thickness at a certain position; performing a sintering device locating step to move the sintering device based on the repairing parameter; and performing a sintering step to exert the scanning device based on the repairing parameter so as to allow the electrified pulverulent bodies to be sintered and form a solid mass on the area.

11 . The application method of claim 10 , wherein the area, the medium and the electrified pulverulent film are curved surfaces.

12 . The application method of claim 10 , further comprises:
performing a medium covering step before the powder locating step to cover the medium on the area by spraying or coating.

13 . A three-dimensional selective repairing apparatus, which is for repairing an area of an unrepaired element with positive electric charges, the area covered by a medium which is non-conductive, the three-dimensional selective repair apparatus comprising:
a main body; a spraying device disposed at and linked with the main body, the spraying device comprising:
an electrostatic generator, the spraying device spraying a plurality of electrified pulverulent bodies with negative electric charges toward the medium through the electrostatic generator to form an electrified pulverulent film on a surface of the medium, the electrified pulverulent bodies coordinated with the medium to magnetically attach to the area; and
a sintering device disposed at and linked with the main body, the sintering device controlled to provide a power beam to selectively heat the electrified pulverulent film, the electrified pulverulent film melted or sintered to form a solid mass on the area.

14 . The three-dimensional selective repairing apparatus of claim 13 , wherein the spraying device and the sintering device are disposed at an outside of the area, and a providing direction of the electrified pulverulent bodies and a providing direction of the power beam are parallel.

15 . The three-dimensional selective repairing apparatus of claim 13 , wherein the spraying device and the sintering device are disposed at an outside of the area, a providing direction of the electrified pulverulent bodies and a providing direction of the power beam are parallel, and the electrified pulverulent bodies are sprayed surrounding the power beam.

16 . The three-dimensional selective repairing apparatus of claim 13 , wherein the sintering device uses selective laser sintering technique, selective laser melting technique or electron beam melting technique.

17 . The three-dimensional selective repairing apparatus of claim 13 , wherein the power beam is an electric arc, an electron beam or a laser beam.

18 . The three-dimensional selective repairing apparatus of claim 13 , wherein the electrified pulverulent bodies are made of metal material, alloy material, metal matrix composite material, polymer, magnetic ceramic material, non-ferromagnetic material or a combination thereof.

19 . The three-dimensional selective repairing apparatus of claim 13 , wherein the electrostatic generator is a high-voltage electrostatic generator, and a negative electrostatic field is produced due to an ionization in an air around the area caused by the high-voltage electrostatic generator so as to allow the electrified pulverulent bodies to have negative electric charges.

20 . The three-dimensional selective repairing apparatus of claim 13 , wherein the main body comprises a handle for handheld use.

21 . The three-dimensional selective repairing apparatus of claim 20 , wherein the handle comprises a trigger for controlling the electrified pulverulent bodies to be sprayed or controlling the power beam to be provided.

22 . The three-dimensional selective repairing apparatus of claim 20 , wherein the handle comprises a trigger for

Assignees

• Univ Nat Tsing Hua

Inventors

• Chang Jen-Yuan
• YEH Shao-Wei
• TSAO Teng-Yueh

Classifications

• B33Y30/00

  Apparatus for additive manufacturing; Details thereof or accessories therefor · CPC title

• B29C64/393

  for controlling or regulating additive manufacturing processes · CPC title

• B29C64/153

  using layers of powder being selectively joined, e.g. by selective laser sintering or melting · CPC title

• B29C73/34

  for local heating · CPC title

• B29C2035/0877

  using electron radiation, e.g. beta-rays · CPC title