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Laser and friction composite additive and subtractive machining device and method

A processing device and a technology of adding and subtracting materials, which are applied in laser welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of increasing the surface roughness of the added metal, forming a stable and continuous unfavorable molten pool, etc., so as to avoid adverse effects , Save processing space and improve manufacturing efficiency

Pending Publication Date: 2021-08-20
广东中科德弗激光科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The problem solved by the invention is that in the existing friction additive process, the metal will be extruded and solidified from the edge of the friction surface to form metal flash, which will significantly increase the roughness of the metal surface of the additive material, which is not conducive to the melting process in the laser-assisted additive material process. At least one aspect in which the pool formation and powder feeding process is carried out stably and continuously

Method used

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  • Laser and friction composite additive and subtractive machining device and method
  • Laser and friction composite additive and subtractive machining device and method
  • Laser and friction composite additive and subtractive machining device and method

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Embodiment 1

[0091] The present embodiment provides a composite processing method for additively manufacturing multilayer metal deposition structures on the surface of a workpiece to be processed based on a laser and friction composite material addition and subtraction processing device, which specifically includes the following steps:

[0092] 1.1. Set the processing parameters of the parts to be processed: the rotational speed V of the rotating friction head 32 1 and the feed rate V 2 , the relative position of the rotating friction head 32 and the surface of the part is the friction depression depth H 1 , the feeding speed of the laser beam is equal to the feeding speed V of the rotating friction head 32 2 , the relative position of the laser beam focus O and the surface of the part is the defocus depth H 2 , the horizontal distance L between the laser beam focus O and the center line of the rotating friction head 32 is determined by the size of the bracket 12, the laser head 21 and t...

Embodiment 2

[0101]This embodiment provides a composite processing method for additively manufacturing a gradient-structured metal deposition structure on the surface of a workpiece to be processed based on a laser and friction composite material increase / decrease processing device. The processing method provided in this embodiment is the same as the processing method in Embodiment 1. The same, the difference is that the last step adopts the following method:

[0102] After the laser-assisted addition, friction addition and mechanical reduction of the first layer of metal are completed, the laser and friction composite addition and subtraction processing device is lifted up by an average height of the deposition layer through the manipulator 46, and steps 1.1 to 1.6 are repeated, that is, After completing the laser-assisted additive, frictional and mechanical subtraction of the former metal, the composition of the metal powder elements needs to be replaced, and the processing parameters, la...

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Abstract

The invention provides laser and friction composite additive and subtractive machining device and method. The device comprises a frame body, a first additive and subtractive assembly and a second additive and subtractive assembly, wherein, the first additive and subtractive assembly comprises a laser head and a powder feeding nozzle, a guide rail in the vertical direction is arranged on the side face of the laser head, the powder feeding nozzle is arranged at the tail end of the laser head, and the powder feeding nozzle is suitable for feeding metal powder to a laser focus of the additive laser source; the frame body comprises a support and a holder, the holder is parallel to the laser head, and a first movement unit suitable for being matched with the guide rail is arranged on the side face of the holder, so that the laser head can be adjusted to move in the vertical direction relative to the holder; and the second additive and subtractive assembly comprises a driving motor, a milling cutter, a rotating friction head and a rotating base, the rotating base is rotationally connected with the holder, and the rotating friction head and the milling cutter are parallel to the laser head and are arranged at the two ends of the rotating base in the height direction correspondingly. The device is compact in structure and low in manufacturing cost.

Description

technical field [0001] The invention relates to the technical field of metal parts increase and decrease material manufacturing, in particular to a laser and friction composite increase and decrease material processing device and method. Background technique [0002] In recent years, additive manufacturing technology has well compensated for the shortcomings of traditional subtractive manufacturing methods due to its series of advantages, such as rapidity, flexibility, and cost saving, and is suitable for the rapid manufacturing of complex parts. [0003] Compared with selective laser melting metal 3D printing technology, laser-assisted additive manufacturing technology is especially suitable for the manufacture and repair of large-scale metal parts. However, due to the rapid non-equilibrium solidification characteristics of the laser molten pool, the residual stress and deformation of the additive metal are large, the columnar grains are coarse, and the crack defects are ob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P23/04B23K26/00B23K28/02
CPCB23P23/04B23K26/00B23K28/02
Inventor 韩冰汪华汪汶铮李艳丽
Owner 广东中科德弗激光科技有限公司
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