Abstract

Please enter the content need to be translated text in the process of welding, define variables is mainly used for pipe saddle, the saddle welding is the main problem is in the welding groove Angle, and along with the changing space position change, and lead to deformation after welding is complex. In the real production manual welding, the welding quality is poor, production conditions, production manufacturing and welding forming result is bad, in order to improve the situation, a design decision to use the welding robot, this creates a robot welding groove Angle of technological requirements.

In this article are real welding production function of slope Angle, proposed the solution of welding robot welding groove Angle through the arc, and the test result is analyzed, in order to find the method of different parameters on welding robot welding process change and affect the subsequent forming saddle play a role of guidance.

According to the test requirements, in order to delivery of 12 mm thickness steel plate Q235B habit, according to the Angle of the panel will be divided into three groups. According to the welding robot melting polar gas shielded arc welding process, the change of welding speed, welding method, the current, voltage and welding speed, the requirement of development and optimization of the process of robot becomes habit fillet welding process parameters, to ensure that the weld moulding beauty.

Tests found that changed the crevasse welding robot welding Angle and the blunt edge, custom processing quality, high support plate assembly and welding process requirements. For small custom steel Angle (40 ° ~ 60 °), the assembly of the gap between the root 2 mm, can't use a blunt edge. Steel used in large groove Angle (60 ° and 90 °), not very big gap, to 1 mm to 1.5 mm, 1 mm should be open to the edge.

When was derived by mathematical and experimental verification of the welding speed of welding is complete, the layer is basically the same energy under the condition of welding line shall break is proportional to the Angle, the thickness of the welding can achieve good effect.

In cover, from the face of the 40 ° voids to 90 ° welding groove, widely used at present is 180 ° processing, including 40 ° ~ 70 ° Angle joint generally adopts the current 210 welding is usually at a speed of 0.1 m/min. And weld moulding beauty, soft root, generally does not require polishing after welding.

Compared with the original process of manual welding, the robot welding process, weld moulding beauty, stable quality and labor productivity is greatly increased, and there are a lot of social benefits and economic benefits.

Keywords: Melting polar gas shielded welding； Robot welding；variable groove Angle；Welding process.

目    录

一、 前言……………………………………………………………………………………1

1、焊接机器人的发展历史………………………………………………………………1

2、焊接机器人的结构及特点…………………………………………………………1

3、焊接机器人在国外的应用现状……………………………………………………3

4、焊接机器人在国内的应用状态………………………………………………3

5、焊接机器人在焊接生产中的应用……………………………………………5

6、焊接接头形式…………………………………………………………………………6

7、本文的主要研究内容…………………………………………………………………9

二、技术方案………………………………………………………………… 10

1、焊接机器人的实验设备…………………………………………………… 10

2、机器人变坡口角度焊接工艺………………………………………………13

3、焊接实验过程………………………………………………………………17

三、结论……………………………………………………………………………………25

小结………………………………………………………………………………27 

参考文献…………………………………………………………………………28 

致谢……………………………………………………………………………… 29