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Non-contact type power automatic feeding and paving device

An automatic supply and non-contact technology, which is applied in the field of non-contact powder automatic supply and leveling device, can solve the problems of the powder spreading device stuck and the powder spreading function not being realized.

Inactive Publication Date: 2010-09-15
TSINGHUA UNIV
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  • Abstract
  • Description
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Problems solved by technology

[0004] The object of the present invention is to provide a non-contact powder automatic supply and paving device to achieve uniform powder spreading in the uneven forming area, thereby solving the problem of uneven surface of the forming area existing in the existing powder spreading device and method. The powder spreading device is easy to be stuck when it is flat, and the deficiencies and defects that the powder spreading function cannot be realized

Method used

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  • Non-contact type power automatic feeding and paving device
  • Non-contact type power automatic feeding and paving device
  • Non-contact type power automatic feeding and paving device

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Embodiment Construction

[0017] The principle, structure and working process of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0018] figure 1 It is a schematic diagram of the structure principle of the present invention. The device includes a working chamber 1, a material box 2 with powder 3, a stopper 4 arranged at the bottom of the material box, a powder spreading system, a working platform 7 with a limit stroke switch, and a workpiece chamber 10 with a piston 11; The material box 2 is fixed in the working chamber 1, the working platform 7 is placed under the material box 2, and the workpiece cavity 10 is fixed on the working platform 7. The powder spreading system is composed of a powder spreading sieve 5, a connecting piece 6, a load cell 15 and a driving device; the powder spreading sieve 5 is suspended above the working platform 7 and below the material box 2 through the connecting piece 6; the driving device consists of Powder spreadi...

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Abstract

A non-contact type power automatic feeding and paving device belongs to the field of electron beams / laser selective area melting technology. The device mainly comprises a working cavity, a work bin, a stop block, a worktable, an automatic power paving device, a computer containing a power paving control program, an A / D conversion card and a motion control card, wherein the power paving system consists of a power paving sieve, a connecting piece, a cantilever weighting sensor and a driving device. Since the power paving sieve is not in contact with a forming area, the surface evenness of the forming area has no influence on the power paving movement and the uniform power pavement of different thicknesses can be realized by controlling the aperture size and motion parameters of the power paving sieve; and especially, the invention has remarkable effect of paving power on the non-even surface.

Description

technical field [0001] The invention relates to a non-contact automatic powder spreading method and device, which can evenly spread powder on a working platform, and belongs to the technical field of electron beam selective melting. Background technique [0002] Electron Beam Selective Melting (EBSM) is an emerging rapid manufacturing process. In the vacuum chamber, the powder spreading device evenly spreads a thin layer of powder particles on the forming area, and the high-energy electron beam is controlled by the computer to melt the powder according to the cross-sectional parameters of the part to be formed, and it is manufactured layer by layer to realize the rapid manufacture of parts. [0003] As an important part of the process, the powder spreading device and the powder spreading process have a great influence on the working quality of the whole system. Known powder spreading device mainly is divided into scraper type at present, three kinds of roller type and movin...

Claims

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Application Information

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IPC IPC(8): B22F3/105B22F7/04
Inventor 林峰张人佶张磊陆伟晏耐生
Owner TSINGHUA UNIV
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