Material adding and reducing coordinated manufacturing method

A technology of collaborative manufacturing, adding and subtracting materials, applied in the direction of manufacturing tools, other manufacturing equipment/tools, plasma welding equipment, etc., can solve the problems of low efficiency of material addition, large thermal deformation of the substrate, and low forming accuracy, so as to improve the forming quality , Improve the flatness, improve the effect of precision and quality

Active Publication Date: 2019-04-16
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems existing in the existing electric arc additive manufacturing technology, such as large thermal deformation of the substrate, l

Method used

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  • Material adding and reducing coordinated manufacturing method
  • Material adding and reducing coordinated manufacturing method

Examples

Experimental program
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Effect test

Embodiment

[0037] Using the collaborative manufacturing equipment system of adding and subtracting materials, the details of this embodiment are as follows:

[0038] Among them, the welding wire used for the additive is ER130S-G high-strength steel welding wire with a diameter of 1.2mm; the substrate is a 6mm thick 304 stainless steel substrate, and the welding torch is a CMT welding torch

[0039] Step 1: According to the size and shape of the workpiece to be formed, use CAD to build the model, and automatically generate the trajectory of the additive material by the computer;

[0040] Step 2: Set the welding parameters, where the wire feeding speed is 7.2mm / min; the welding speed is 11mm / s, the welding torch on the same side is lifted up 2mm when the next layer is added, and the shielding gas flow rate is 20L / min.

[0041] Step 3: Turn on the power supply, wait for the collaborative manufacturing equipment system of adding and subtracting materials to be ready, turn on the protective g...

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Abstract

The invention discloses a material adding and reducing coordinated manufacturing method. According to the method, model building is performed through CAD, and a computer is used for automatically generating a material adding trajectory; a power source is switched on, a base plate is installed and cleaned, and a material adding robot performs material adding on the front side of the base plate; thebase plate is overturned by 180 degrees; the material adding robot performs material adding on the front side of the base plate, and a material reducing robot performs material reducing on the back side of the base plate, air cooling is performed through an air gun, and an infrared thermometer monitors the back side temperature of the base plate in real time; overturning is performed again aftermachining of material adding and reducing and back side cooling are completed; and the steps are repeated till material adding manufacturing is completed. In the manufacturing method, material addingmanufacturing and material reducing machining are performed in a coordinated manner, the temperature of the base plate is monitored and controlled in real time, thermal deformation of the base plate is greatly reduced, the forming precision and quality of an obtained material adding structural part is improved, and the manufacturing period of electric arc material adding is shortened.

Description

technical field [0001] The invention belongs to the field of arc additive manufacturing, and specifically relates to a collaborative manufacturing method for adding and subtracting materials. Background technique [0002] Additive manufacturing, also known as 3D printing, is a current research hotspot in advanced intelligent manufacturing. Unlike traditional subtractive manufacturing, additive manufacturing is a layer-by-layer cumulative manufacturing method. Arc additive is a common method of additive manufacturing. Its working principle is to use CAD and other software for path planning, control the welding robot to move on the specified trajectory, use the energy of the arc to melt the welding wire, and accumulate the material to the specified position until it is completed. Manufacturing of components. [0003] Compared with the traditional casting process, the structure of the components obtained by arc additive material is more uniform, with fewer internal defects, an...

Claims

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Application Information

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IPC IPC(8): B23K9/167B23K9/173B23K10/02B23P23/04B23K9/32
CPCB23K9/167B23K9/173B23K9/32B23K10/027B23P23/04
Inventor 王克鸿许雪宗宋正东孙智鸣金鸣汪海李能何思源周琦冯曰海
Owner NANJING UNIV OF SCI & TECH
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