JPS59110468A - Moltijoint type automatic arc welding machine - Google Patents

Abstract

PURPOSE:To execute an automatic arc welding without requiring a skilled technique and exclusive jigs and tools by constituting so that a torch traverser for an automatic welding machine can be moved by a movement of the first and the second arms and a rotation around a hinge and an electro-magnetic brake. CONSTITUTION:A continuous automatic arc welding of a three-dimensional linear part having an optional inclination against the horizontal surface is executed as mentioned below. That is to say, a rotation with regard to the Y axis and an inclination with regard to the X axis of a torch traverser body 16 for an automatic welding machine are executed by the respective rotations of the first arm 4 and the second arm 8 and a movement of the arm 8. Subsequently, after positioning of the body 16 is completed, its position is fixed by operating simultaneously electromagnetic brakes 2, 6, 9 and 13 connected to each joint 3, 7 by operating a push-button by a worker. Thereafter, an indicator 21 is shunted to the upper part, a torch 20 for the automatic welding machine is made to run from a start point of a surface to be welded to its end point, and the automatic arc welding is executed continuously.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a method of welding a welding surface from a three-dimensional straight part having an arbitrary inclination with respect to a horizontal plane, such as in a steel plate for integrally mounting a large rotary fluid machine and a prime mover. The present invention relates to an automatic arc welding machine that automates the welding work of machine parts.

Automation of welding work using automatic welding machines has been carried out for a long time, but it has been used for continuous welding work of mass-produced parts or limited straight sections, and even in such cases, there is a Special jigs and tools are required, and the positioning work requires a lot of effort. On the other hand, due to the complexity of the work process, automation of welding work for three-dimensional straight welding parts with various inclinations with respect to the horizontal plane, which is made up of butting three-dimensional planes in high-mix low-volume production parts, is currently not possible. This has traditionally been done manually by workers. Therefore, there is currently a strong desire to automate the welding work for these mechanical parts.

The present invention enables the welding work of various three-dimensional straight parts, which has conventionally been performed manually by workers, to change or move the posture of the machine parts to be welded, and furthermore allows the worker to position the torch for an automatic welding machine. An object of the present invention is to provide an articulated automatic arc welding machine that enables automatic arc welding without requiring specialized jigs and tools and skilled skills.

The configuration, operation, and effects of the present invention will be described based on FIG. 1, which is an embodiment of the present invention.

A support stand 1 that supports the machine, a first arm 4 and a second arm 8 equipped with a first joint 3 and a second joint 7 that are rotatably installed on the support stand, and a rotatable structure on the Y-axis at the tip of the second arm. , a torch traverser 12 for an automatic welding machine is attached so that the main body 16 of the torch traverser for an automatic welding machine can be tilted at an angle of 90 degrees or less with respect to the X axis.

The welded parts of large mechanical parts, which are composed of three-dimensional straight parts, differ from those of mass-produced parts and do not have the same shape.
Furthermore, it is not possible to easily change the posture of mechanical parts for welding, and therefore the automatic welding torch traverser of the multi-joint automatic arc welding machine must have a relatively wide degree of freedom in its posture. Therefore, the automatic welding torch 20 is moved near the welding part by rotating the first arm and the second arm and moving the second arm. In the embodiment shown in FIG. 1, the support and movement of the 1st arm and the 2nd arm are shown to be carried out by a spring 5.10, but it goes without saying that this can also be done by a cylinder using hydraulic or pneumatic pressure. stomach.

Continuous automatic arc welding of three-dimensional straight parts having an arbitrary inclination with respect to the horizontal plane is carried out by operating a push button from the outside using a trolley drive motor 17 and chain 19 installed in the torch traverser body for an automatic welding machine. Since the automatic welding machine torch 20 attached to the automatic welding machine can run at a constant speed, this can be achieved by installing the automatic welding machine torch traverser body parallel to the linear welding surface.

In other words, an automatic welding machine torch whose tip position is adjusted to the same pressure as the welding standby state of an automatic welding machine torch) 5 Parser - An indicator 21 fixed at the center that can be folded left and right during arc welding and further retracted to the top. the tip of
If you align the automatic welder's torch to an arbitrary position on the surface to be welded so that it is placed near the starting point of the surface to be welded, and at the same time align the automatic welder's torch to the starting point of the surface to be welded with that as the center, those two At this point, the main body of the automatic welding machine torch traverser is positioned parallel to the linear surface to be welded.

It goes without saying that these operations can be performed by externally operating the automatic welding machine torch traverser by rotating it about the X-axis and further by rotating it about the Y-axis. After completing the positioning of the automatic welding machine torch traverser body, the operator presses a button to connect the electromagnetic brakes 2.6 to each joint.
9 and 13 operate simultaneously and their postures are fixed. After that, the indicator is retracted to the top and the torch for the automatic welding machine is run at a constant speed from the starting point to the ending point of the surface to be welded, allowing continuous automatic arc welding. This is done by the operator repeating the above operations.

As mentioned above, the present invention enables arc welding of large mechanical parts consisting of three-dimensional straight parts having arbitrary inclinations with respect to the horizontal plane, which conventionally required manual labor and took a lot of effort. Extremely excellent effects can be expected as the work can be performed efficiently, continuously and automatically without the need for skilled skills or special jigs and tools.

[Brief explanation of the drawing]

FIG. 1 is a front view of one embodiment of the present invention, and FIG. 2 is a side view of the top of FIG. 1. 1... Support stand, 2... Electromagnetic brake, 3... First joint, 4... First arm, 5... Spring, 6
...Electromagnetic brake, 7...Second joint, 8...f5
2 Arm, 9...Electromagnetic brake, 12...Torch traverser for automatic welding machine, 13...Electromagnetic brake%14...Hinge, 16...Torch traverser for automatic welding machine Main body, 17... Car drive motor, 19
...Chain, 20...Taupe for automatic welding machine-12
1... Indicator, Figure 1 = 363- Figure 2

Claims (1)

[Claims] A second arm is attached via a second joint to a first arm having rotatable first and second joints on a support base, and a torch for an automatic welding machine is attached to the tip of the second arm about an axis parallel to the second arm. Attach the traverser so that the electromagnetic brake axis of the automatic welding torch traverser is at right angles, and set the welding surface of the three-dimensional straight part having an arbitrary inclination to the trajectory of the automatic welding torch and the horizontal plane to be parallel. In order to move the torch traverser for automatic welding machine,
A multi-joint type automatic arc welding machine that allows the traveling speed of the automatic welding machine torch to be varied from the outside by moving the arm and rotating around the hinge and electromagnetic brake axis attached to the automatic welding machine torch traverser. .