SLM-based tree-shaped supporting unit
A support unit, tree-like technology, applied in the field of 3D printing, can solve the problems of multi-material and consumption, achieve the effect of clear force flow, shorten processing time and save materials
Inactive Publication Date: 2020-12-04
中国人民解放军32286部队50分队
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Problems solved by technology
The tree structure of Lisbon Oriente Railway Station and Qatar National Convention Center has more reinforced structures, mainly to ensure the strength of the structure, but at the same time, the construction of the tree structure requires more materials
Method used
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[0015] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.
[0016] Such as figure 1 As shown, the present invention proposes an SLM-based tree-like support unit that can be filled inside the part, including branch inclination angle, branch diameter, branch number, and branch series;
[0017] The selection of the branch inclination angle should consider the constraints of the processing technology. The SLM process requires that the inclination angle θ of the structure should meet:...
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The invention discloses an SLM-based tree-shaped supporting unit capable of filling the interior of a part. The inclination angle of branches, the diameter of branches, the branch number of the branches and the stage number of the branches are involved in the tree-shaped supporting unit; the supporting unit is characterized in that the inclination angle theta of the branches is larger than or equal to 45 degrees, and on the premise that the supporting height is not changed, the smaller the inclination angle theta is, the larger the supporting area is; the diameter d of the branches is in direct proportion to the weight of a tree-shaped support, and d is larger than or equal to 0.5 mm and smaller than or equal to 1.5 mm; the smaller the diameter of the branches is, the better the weight reduction effect is; the selection principle of the branch number of the branches is that the branch number of the branches is reduced as much as possible on the premise that the supporting interval of 5mm and the supporting bearing capacity are guaranteed, so that the supporting weight is reduced; and the stage number of the branches adopts a first-stage tree-shaped structure. According to the SLM-based tree-shaped supporting unit, lightweight of SLM manufacturing parts is achieved, materials are saved, and the machining time is shortened; and the tree-shaped supporting unit is simple in structure, clear in force flow and suitable for being used as a primary lightweight tree-shaped supporting unit structure design.
Description
technical field [0001] The invention relates to the technical field of 3D printing, in particular to an SLM-based tree-shaped support unit that can be filled into parts. Background technique [0002] At present, in the field of construction, tree structures have been widely used, especially in airports, railway stations and other occasions that require large-span support. The tree structure has the characteristics of clear structural force flow, reasonable force transmission, and less space occupation. It can be introduced into the field of 3D printing as a basic unit structure, as a basic unit structure for the lightweight design of the internal structure of parts. Then, according to the processing constraints of the SLM, it is adapted for 3D printing. SLM (selective laser melting) stands for Selective Laser Melting. The SLM technology directly heats the metal powder through the laser to make it completely melt in the technology of cooling and forming. [0003] Before th...
Claims
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Login to View More IPC IPC(8): E04C3/32B33Y80/00
CPCB33Y80/00E04C3/32
Inventor 孙扬张庆标唐力吴宝剑李振强梁科山张冬晨孙正虞畅
Owner 中国人民解放军32286部队50分队