Double-skin additive manufacturing machine
A technology of additive manufacturing and machine, which is applied in the field of manufacturing better quality parts, can solve the problem of frame sealing, reduce the quality of parts, lack of oxygen for operators, etc., achieve the effect of reducing deformation and avoiding powder leakage
Active Publication Date: 2019-08-16
ADDUP
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
When heated, these parts of the machine frame deform and cause the source of energy or heat to move, reducing manufacturing accuracy and thus the quality of the manufactured parts
[0011] Moreover, this deformation of the frame can also cause sealing problems, resulting in dangerous leakage of powder or inert gas
Specifically, AM powders may contain toxic chemical compounds or metals
Furthermore, since the fabrication chamber of an AM machine is filled with an inert gas to avoid the oxidation of certain AM powders and the risk of explosion associated with the oxidation of some of these oxidizable powders, in the event of a leak, the inert gas is present around the machine. Inflated, operators in the workshop where the machine is installed may be starved of oxygen
[0012] Finally, the heat radiated from the work area can also lead to an increase in the temperature inside the additive manufacturing chamber, which can lead to crystallization of the powder, which can compromise the quality of the powder bed, thereby reducing the quality of the manufactured part
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0022] The present invention relates to an additive manufacturing machine 10, preferably using the method of additive manufacturing of a deposited powder bed. Specifically, with this method of fabrication, a large amount of unconsolidated powder surrounds the part being fabricated, so when the fabrication plate is heated or heated, a large amount of heat is radiated from this powder.
[0023] The machine according to the invention can be used with additive manufacturing powders of the metallic type or of the non-metallic type based, for example ceramics.
[0024] To implement the additive manufacturing method, the additive manufacturing machine 10 includes a manufacturing chamber 12 in which at least one heat or energy source 14 is used to melt additive manufacturing powder on a work surface 16 . The heat or energy source 14 may be a laser beam, an electron beam and / or a diode. Preferably, the manufacturing chamber 12 is closed in a hermetic manner during the manufacturing cy...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to an additive manufacturing machine (10), this additive manufacturing machine comprising a manufacturing enclosure (12), the manufacturing enclosure being formed by at least onework surface (20), a front wall (22), a back wall (24), a left side wall (26), a right side wall and a top wall (30), at least one of these walls supporting energy or heat source (14), the additive manufacturing machine (10) comprising an inner skin (32) placed inside the manufacturing enclosure (12) in front of each wall of this enclosure supporting the energy or heat source (14) and a non-zerodistance away from these walls so as to create a circulation volume (V) for a stream of gas (F), and the additive manufacturing machine (10) comprising a device (52) for generating the stream of gas (F) which device is connected to the circulation volume (V).
Description
technical field [0001] The present invention is in the field of powder-based additive manufacturing by melting particles of the powder using an energy or heat source such as a laser beam, electron beam or diode. [0002] More specifically, the invention aims to allow better quality parts to be manufactured. Background technique [0003] The use of melting to fabricate components can create residual stresses in the fabricated component, which can lead to defects in the fabricated component or even breakage of certain portions of the fabricated component. [0004] When manufactured parts are defective, they are scrapped and cost the manufacturer. In addition, new parts must be produced to meet the needs of the customers ordering them. [0005] On the other hand, when a part of the manufactured component breaks under the action of residual stresses, it is no longer possible to continue manufacturing it. In particular, since it is usually the base of the part that is fixed to...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B33Y30/00B29C64/20
CPCB22F2999/00B33Y30/00B29C64/364B29C64/25Y02P10/25B22F10/28B22F12/70B22F12/60B22F12/50B33Y40/00B22F2203/05B29C64/153B29C64/295B29C64/371B33Y10/00
Inventor J-F·萨尔托里
Owner ADDUP