Clamping auxiliary forming device for two sides of molten pool in additive manufacturing process and method

A technology for additive manufacturing and molten pool, which is applied in the field of auxiliary forming devices for clamping both sides of the molten pool in the process of additive manufacturing, which can solve problems such as difficult application of width and size, and achieve the effect of improving dimensional accuracy.

Pending Publication Date: 2021-06-08
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing related research, in terms of forming accuracy, the Chinese patent CN108637504A proposes a device and method for rolling the top and side surfaces of the cladding layer for arc-filled wire additive manufacturing. The forming accuracy of the parts, but due to the large size of the equipment

Method used

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  • Clamping auxiliary forming device for two sides of molten pool in additive manufacturing process and method
  • Clamping auxiliary forming device for two sides of molten pool in additive manufacturing process and method
  • Clamping auxiliary forming device for two sides of molten pool in additive manufacturing process and method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0039] Example 1:

[0040] A 316L stainless steel thin wall member having a deposited layer width of 2 mm is manufactured in a one-way scan. figure 1 As shown, the heat source of laser deposition manufacturing is an FCL-2000 semiconductor laser using a coaxial powder mode, and the laser deposition head moves, and the clamping member is a roller using GP-180, and the clamping member is specifically includes the following steps:

[0041] Step 1: Grinding the surface of the stainless steel substrate with sandpaper, removes the surface of oil impurities, and uses degreased cotton with anhydrous ethanol, and then places the substrate in the surface of the workbed surface after polishing the surface of the ground. The 316L powder was sieved in advance and placed in a vacuum drying tank, dried at 120 ° C for 2 hours, and then placed in a powder feeder, open the powder supply and set its rotational speed of 1.2 rpm. The air flow rate and protective gas flow are set to 8 l / min. Turn on t...

Example Embodiment

[0046] Example 2:

[0047] TC4 thin-walled parts of the deposited layer width of 5 mm in a one-way scan are used as an example, such as figure 2 As shown, the heat source of laser deposition manufacturing is an FCL-2000 fiber laser, and the teach machine hand GP-180 is controlled by the YRC-1000 control cabinet, and the laser deposition head moves, clips. The part is a clamping block, which includes the following steps:

[0048] Step 1: Deep the surface of the TC4 substrate with sandpaper, remove the surface adherant, and use skimmed cotton with anhydrous ethanol, scrubbing the surface, and pending it naturally. Place the substrate on the table surface. Put the TC4 wire into the feed wire, open the device power source and set the filament speed of 200 mm / min. Set the laser protection air flow to 8L / min. Open the laser and water cooler, in the continuous laser mode, set the laser power to 1200W; open the YRC1000 teaching programmer to teach the Action of the GP-180 robot.

[00...

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Abstract

The invention belongs to the technical field of additive manufacturing, and particularly relates to a clamping auxiliary forming device for two sides of a molten pool in an additive manufacturing process and a method. The device comprises additive manufacturing equipment, a connecting device and a clamping component; the connecting device is used for connecting the clamping component with the additive manufacturing equipment so as to adjust the relative position of the clamping component and an additive deposition head to ensure synchronous movement of the clamping component and the additive deposition head, the additive manufacturing equipment comprises the additive deposition head, an additive heat source, a gas cylinder, a feeding device, a feeding nozzle and a feeding nozzle connecting plate, and the feeding nozzle conveys additive manufacturing raw materials to a deposition position. According to the clamping auxiliary forming device for the two sides of the molten pool in the additive manufacturing process and the method, the device and method can be applied to the additive manufacturing processes of different deposition widths through the connecting device, and the surface flatness and the size precision in the width direction of the side wall of a deposition layer can be effectively improved through the clamping and restraining effect of the clamping component.

Description

technical field [0001] The invention belongs to the field of additive manufacturing, and in particular relates to an auxiliary forming device and method for clamping on both sides of a molten pool during the additive manufacturing process. Background technique [0002] Additive manufacturing technology refers to an advanced manufacturing technology based on the principle of discrete accumulation, driven by three-dimensional data of parts, and preparing workpieces by layer-by-layer accumulation. However, due to the unstable shape of the molten pool in the process of additive manufacturing, the parts have the problem of low wall thickness forming accuracy. [0003] In this regard, some scholars have proposed a composite additive manufacturing technology based on clamping constraints to solve the above problems. This technology can ensure the dimensional accuracy and surface quality of formed parts without removing materials. In the existing related research, in terms of formi...

Claims

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Application Information

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IPC IPC(8): B22F10/25B22F12/00B33Y30/00B33Y10/00
CPCB33Y10/00B33Y30/00
Inventor 吴东江朱玟旭于成水牛方勇马广义
Owner DALIAN UNIV OF TECH
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