3D printing method based on ultrasonic welding additive manufacturing and electric spark forming

A technology of ultrasonic welding and 3D printing, applied in the direction of additive processing, etc., can solve the problems of high forming precision and small electrode size, and achieve the effect of high precision, easy implementation and uniform texture

Active Publication Date: 2017-06-23
NANCHANG UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

It not only makes use of the advantages of ultrasonic welding, such as low pressure, low temperature, and firm consolidation, but also combines the characteristics of small electrode vibration, small electrode size, and high forming accuracy of EDM.

Method used

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  • 3D printing method based on ultrasonic welding additive manufacturing and electric spark forming
  • 3D printing method based on ultrasonic welding additive manufacturing and electric spark forming
  • 3D printing method based on ultrasonic welding additive manufacturing and electric spark forming

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Embodiment Construction

[0043] In the following, the processing of the waveguide hole in the waveguide hole component of the radio receiver is taken as an example to describe in detail.

[0044] 1. Waveguide hole processing requirements

[0045] Such as Figure 3-5 As shown, it is a key structure of the waveguide hole components of radio receivers in the microwave, millimeter wave, submillimeter wave bands, etc., and it is required to be integral and the hole smooth. The receiving signal hole and the reference signal hole are vertically arranged in space, each has a straight part and a curved part, and there is a coupling hole between them. Each hole section is rectangular. The size of the rectangular section is required to reach the level of 0.508×0.254mm, or even 0.254×0.127mm, and the size of the coupling hole is required to be smaller. The dimensional error of the rectangular section is required to be within 10 μm, and the surface roughness is within Ra0.8-0.4 μm.

[0046] 2. Implementation o...

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Abstract

The invention discloses a 3D printing method based on ultrasonic welding additive manufacturing and electric spark forming. According to the method, the two high and new technologies of ultrasonic welding additive manufacturing and electric spark forming are combined, and a high-precision ultrathin metal sheet is subjected to layered ultrasonic welding; and after each layer is welded, the spark erosion technique is adopted to form a vacant part on the cross section of the layer according to the component CAD model cross section needs, and forming is performed layer by layer until final forming is completed. The 3D printing method has the advantages of being small in ultrasonic welding pressure, low in temperature, firm in solidification and the like together with the characteristics that an electric spark forming electrode is low in vibration, small in size, high in forming precision and the like. The defects that common 3D printing precision is low, bonding is not firm, the inside is hollow and the suspended portion needs to be supported are overcome. The difficulties that tool fillets occur in other 3D printing, the tool size cannot be small, tool vibration is high, and the precision of a top layer 'ceiling' cannot be guaranteed are eliminated. Overall precision forming of a component with a 3D inner cavity can be achieved, and a breakthrough is provided for simplifying the component structure, reducing the component size and improving product accuracy.

Description

technical field [0001] The invention belongs to the new technology field of 3D printing and manufacturing, and specifically relates to a 3D printing method based on ultrasonic welding and electric discharge forming. printing method. Background technique [0002] Because 3D printing manufacturing technology can integrally form complex / ultra-complex structural parts that cannot be realized by traditional methods, plus no need to prepare molds and short production cycle, 3D printing manufacturing technology has broad development prospects and is the development of manufacturing technology in recent years. hotspot. [0003] Although this type of additive manufacturing can make 3D components integrally formed, there are still some problems, such as the shape, size and precision are difficult to meet the component requirements, and the internal hollow and suspended parts require annoying physical supports. [0004] At present, these problems cannot be solved well in China. The r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23H5/00B33Y10/00
CPCB23H5/00B33Y10/00
Inventor 王官明朱政强欧阳华邓红标
Owner NANCHANG UNIV
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