A Five-axis Deposition Method for Directed Energy Deposition of Cantilever Structures
An energy deposition and cantilever technology, applied in electrical program control, manufacturing tools, welding equipment, etc., can solve the problems of slag hanging, affecting shape and dimensional accuracy, warping deformation, etc., to avoid the flow of molten pool.
Active Publication Date: 2020-08-18
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology
However, when processing parts with cantilever structure characteristics, due to the large temperature gradient, it is easier to form dross and warping deformation, which affects the shape and dimensional accuracy
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[0038] 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 conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0039] The base structure is set on the bottom surface of the tooling, and the base structure is provided with a cantilever structure. The cantilever structure is not directly connected to the bottom surface of the tooling, and is in a suspended state, that is, the suspended structure on the base structure is called a cantilever structure, such as figure 2 As shown, the base structure is a cone...
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The invention belongs to the field of directed energy deposition and discloses a directed energy deposition five-axis fused deposition method of a cantilever structure. The method comprises the following steps: (a) cutting a to-be-formed cantilever structure on a base body structure into slices and performing track filling on each slice layer to obtain a fused deposition track; (b) performing five-axis space transformation on each point on the fused deposition track to enable each point to be positioned at the position where a welding gun can arrives at to obtain a terminated transformation point of each point, and calculating the feeding speed of each terminated transformation point to obtain the feeding speed of all the terminated transformation points; and (c) performing sharp corner treatment on the fused deposition track and performing welding sequence planning on the track subjected to sharp corner treatment to determine a five-axis fused deposition forming process of the to-be-formed cantilever structure. By the method, the surface of a five-axis fused deposition weld pass has good appearance, the forming difficulty of an electric arc additional material cantilever structureis reduced, the rate of finished products is increased and waste of materials and energy is reduced.
Description
technical field [0001] The invention belongs to the field of directed energy deposition, and more specifically relates to a five-axis deposition method for directed energy deposition of a cantilever structure. Background technique [0002] The cantilever structure means that after the bottom surface of the tooling is specified, the base structure has the bottom surface of the tooling and is connected to the structure, while the structure is suspended on the surface of the base structure without being directly connected to the bottom surface of the tooling. Due to the different forming characteristics of this kind of structure with cantilever features, if it is still processed according to the normal process parameters, the shape accuracy and dimensional accuracy of the formed parts will often fail to meet the requirements. damage. [0003] Compared with high-power laser and electron beam additive manufacturing technology, arc deposition additive manufacturing has large diam...
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IPC IPC(8): G05B19/19B23K9/04
CPCB23K9/04Y02P70/10Y02P80/30
Inventor 来五星戴福生张海鸥胡建南陈曦王桂兰
Owner HUAZHONG UNIV OF SCI & TECH