JPS635186B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method in which the welding surface is constructed from a three-dimensional straight portion having an arbitrary inclination with respect to the horizontal plane, which is found in a steel base for integrally mounting a large rotary fluid machine and a prime mover. This invention relates to an automatic arc welding machine that is used to automate the welding 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 of various three-dimensional straight parts, which has conventionally been done manually by workers, to be performed by changing or moving the position of the machine parts to be welded, and further by allowing the worker to move the torch of 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 special jigs and tools for positioning 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.

FIG. 1 shows an embodiment of an articulated automatic arc welding machine according to the present invention. The present invention comprises a support stand 1 that supports a multi-joint automatic arc welding machine, a first arm 4 and a second arm 8 each having a first joint 3 and a second joint 7 rotatably installed on the support stand. Torch traverser body 1 for automatic welding machine rotates about the Y-axis at the tip of the second arm and rotates at an angle of 90 degrees or less about the X-axis
It is composed of a torch traverser 12 for an automatic welding machine, which is attached so that the torch traverser 6 can be tilted.

Unlike mass-produced parts, the welding parts of large machine parts made of three-dimensional straight parts do not have the same shape, and furthermore, the posture of the machine parts cannot be easily changed for welding. Therefore, the posture of the automatic welding machine torch traverser of the multi-joint automatic arc welding machine also needs to have a relatively wide degree of freedom. Therefore, the torch for automatic welding machine 20
The movement of the welding part near the welding part is achieved by rotating the first arm and the second arm and moving the second arm. In the embodiment shown in FIG. 1, the first arm and the second arm are supported and moved by springs 5,
10, but it goes without saying that it is also possible to use a hydraulic or pneumatic cylinder.

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

That is, the tip of the indicator 21 is adjusted to the same tip position as the welding state of the automatic welding machine torch, and is fixed to the center of the automatic welding machine torch traverser, and can be folded left and right during arc welding, and then retracted to the top. , by placing the automatic welder's torch at 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 aligning the automatic welder's torch to the starting point of the surface to be welded with that as the center. At two points, the automatic welding machine torch traverser body is positioned parallel to the linear surface to be welded.

Needless to say, these operations can be performed by externally operating the automatic welding machine torch traverser body by rotating it about the X axis and further by rotating it about the Y axis. After the automatic welding machine torch traverser body positioning is completed, the electromagnetic brakes 2, 6, 9, and 13 connected to each joint are activated simultaneously by the operator's push button operation, and the posture is fixed. Thereafter, automatic arc welding becomes possible continuously by retracting the indicator to the upper part and moving the torch for the automatic welding machine at a constant speed from the starting point to the ending point of the surface to be welded.

This is done by the operator repeating the above operations on other welding surfaces.

As described above, the present invention enables large mechanical parts to be constructed from three-dimensional straight parts having arbitrary inclinations with respect to the horizontal plane, which conventionally required manual labor and took a lot of effort. Very excellent effects can be expected, such as arc welding work that does not require skilled skills or special jigs and tools, and can be performed efficiently, continuously, and automatically.

[Brief explanation of the drawing]

FIG. 1 is a front view of an embodiment of the present invention, and FIG. 2 is a side view of the top of FIG. 1... Support stand, 2... Electromagnetic brake, 3... First joint, 4... First arm, 5... Spring,
6... Electromagnetic brake, 7... Second joint, 8... Second arm, 9... Electromagnetic brake, 12... Torch traverser for automatic welding machine, 13... Electromagnetic brake, 14... Hinge, 16... Torch traverser body for automatic welding machine, 17... Car drive motor, 19... Chain, 20... Torch for automatic welding machine, 21... Indicator.

Claims (1)

[Claims] 1. If the second arm is attached via the second joint to the first arm having rotatable first and second joints on the support base, and the torch for automatic welding machine can be run at a constant speed in either the left or right direction. An electromagnetic brake is attached to the hinge attached to the center of the upper part of the automatic welding machine torch traverser, which is equipped with a dolly with a torch for automatic welding machines attached and a guide rail.
The electromagnetic brake is connected via the axis of the hinge, and the electromagnetic brake is fixed to the tip of the second arm so that the central axis of the electromagnetic brake intersects with the central axis parallel to the second arm, and In order to set the welding surface of a three-dimensional straight part having an arbitrary inclination parallel to each other, the automatic welding machine torch traverser is moved by moving the first and second arms and the hinge attached to the automatic welding machine torch traverser. and an articulated automatic arc welding machine made possible by rotation around the electromagnetic brake axis.