Automatic welding method and device for end of round drill rod

Abstract

The invention discloses an automatic welding method and device for the end of a round drill rod, and the method comprises the steps that a male head joint transfer robot recognizes and grabs a male head, reads a material code of the male head, and places the male head into a clamp of a male head friction welding machine to be clamped; the pipe body transfer robot grabs the pipe body and places the pipe body on a male head friction welding machine, a male head and one end of the pipe body are welded together, the concentricity of the pipe body and the male head is detected after welding is completed, and a semi-finished drill rod which is detected to be qualified is obtained; the female head transfer robot recognizes and grabs one female head, and the female head is placed in a clamp of the female head friction welding machine and clamped; and the drill rod transfer robot grabs the semi-finished drill rod and places the semi-finished drill rod on the female head friction welding machine, the female head and the other end of the pipe body of the semi-finished drill rod are welded together, the concentricity of the pipe body and the female head is detected after welding is completed, and the finished drill rod which is detected to be qualified is obtained. The invention further provides an automatic welding device for the ends of the round drill rods. Production efficiency can be improved, labor intensity is reduced, and personal safety is guaranteed.

Description

technical field [0001] The invention relates to automatic friction welding technology, in particular to an automatic welding method and device for circular drill pipe ends used for automatic welding of both ends of a circular drill pipe and a rod body. Background technique [0002] The drill pipe is an important part of the drilling rig, and is often used in the drilling construction of underground gas extraction, water exploration and drainage in coal mines. During the drilling process, the drill pipe is in a complex working state and is often subjected to tension, compression, bending, shearing and torsion. , hydraulic, vibration and other alternating loads, and accompanied by the scouring of the liquid, so the drill pipe often breaks during drilling, which affects normal production and causes loss of human and financial resources, which has a great impact on coal mine safety. [0003] In the production process of drill pipe, end welding is an important production process,...

AI Technical Summary

Problems solved by technology

[0010] 1) During the production process, the loading and unloading of male, female, and pipe bodies is done manually or manually transported to the friction welding table, and the friction welding machine comes with a truss gripper to realize loading, which is labor-intensive ;

[0011] 2) The loading and unloading of heavy drill pipes (20-70kg) requires two people to carry or hoist with truss trucks, which is inefficient;

[0012] 3) The manual operation environment is harsh;

[0013] 4) The parameter records of joint welding process are lost, and the welding quality cannot be traced;

[0014] 5) Manual participation in the whole process of production, high failure rate

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