Powder spreading device for laser additive manufacturing of multi-layer materials
A laser additive, multi-layer material technology, applied in the direction of additive processing, process efficiency improvement, energy efficiency improvement, etc., can solve the problems of low powder spreading efficiency, high temperature, low powder utilization rate, etc., to achieve convenient processing, Simple structure and low cost
Inactive Publication Date: 2021-12-24
TIANJIN UNIV
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Problems solved by technology
The existing powder spreading process is generally operated manually. This method is difficult to control the powder spreading accuracy, the powder spreading thickness error is large, the powder spreading surface is uneven, the powder spreading efficiency is low, the powder utilization rate is low, and the labor intensity of workers is high. And because the special materials of laser additive need to preheat the workpiece, the temperature of the workpiece is high, which brings adverse environmental impact to the operator
Method used
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Embodiment Construction
[0014] The technical solutions of the present invention will be further described below in conjunction with specific embodiments. as attached figure 1 -Shown in 3, powder spreading device of the present invention comprises base, base plate, movable bolt, positioning hole, positioning movable plate, guide post, wherein:
[0015] Set the substrate on the base, and the substrate surrounds the area to be processed to place laser additive parts and powder;
[0016] A guide post is set on one side of the base plate, and a positioning movable piece is set between the base plate and the top of the guide post; a positioning hole is set on the other side of the base plate, and a movable bolt is set in the positioning hole; the movable bolt can move along the positioning hole and carry out The fixed and positioning movable piece can perform circular motion around the guide post, and the connecting groove of the positioning movable piece is connected with the movable bolt.
[0017] The ...
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Abstract
The invention discloses a powder spreading device for laser additive manufacturing of multi-layer materials. The powder spreading device comprises a base, a base plate, a movable bolt, a positioning hole, a positioning movable plate and a guide column, the base plate is arranged on the base, and a to-be-processed area is defined by the base plate; the guide column is arranged on one side of the base plate, and a positioning movable piece is arranged between the base plate and the top end of the guide column; a positioning hole is formed in the other side of the base plate, and the movable bolt is arranged in the positioning hole; and the movable bolt can move along the positioning hole and be fixed, the positioning movable piece can conduct circular motion around the guide column, and a connecting groove of the positioning movable piece is connected with the movable bolt. The powder spreading device can be rapidly and conveniently arranged in laser additive system equipment, the laser additive processing technology can be applied to laser cladding equipment under the condition that the whole equipment does not need to be greatly changed, and the device is simple in structure, convenient to process and manufacture and low in manufacturing cost.
Description
technical field [0001] The invention belongs to the technical field of laser additive materials, and more specifically relates to a powder spreading device for laser additive manufacturing of multi-layer materials. Background technique [0002] Laser selective melting (SLM) is a metal additive manufacturing (AM) technology that uses high-energy laser beams to melt metal alloy powder on a designed two-dimensional cross-section, and prints solid parts layer by layer from bottom to top, with dimensional accuracy The advantages of high precision, good surface quality, high density and less material waste have become one of the important technologies of AM technology in the field of metal parts forming. At present, there are mainly two methods for powder filling in the laser additive process: synchronous powder feeding method and preset powder spreading method. The disadvantage of the synchronous powder feeding method is that the upper structure of the molding material lacks sup...
Claims
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IPC IPC(8): B22F3/105B33Y30/00
CPCB33Y30/00Y02P10/25
Inventor 胡绳荪崔妍申俊琦耿可屏
Owner TIANJIN UNIV