JPH0119996B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for accurately setting the spacing between a large number of torches provided in a gas cutting device, and more specifically to a method and apparatus for accurately setting the spacing between a large number of torches provided in a gas cutting device, and more particularly, the present invention relates to a method and an apparatus for accurately setting the spacing between a large number of torches provided in a gas cutting device. In a parallel cutting device that cuts steel plates in parallel, after automatically positioning the torch spacing using numerical signals, the center of these torches is detected to detect errors due to the torch mounting condition, The present invention relates to a method and apparatus for setting torch spacing in a parallel cutting device, characterized in that the torch spacing can be set accurately by correcting this error position.

In the previous parallel cutting device, the torch spacing had to be set manually according to the drawing line or ruler, which had the drawback of requiring time and effort.
In order to improve these shortcomings, for example,
As shown in Publication No. 39008 and Publication No. 54-3019, the torch interval is set by automatically moving the torch carriage that holds the torch using numerical signals. Even if this can be done with high precision, the center position of the torch attached to the tip of this carriage varies depending on how each torch holder is held, making it difficult to accurately specify the distance between the torches. However, there were drawbacks that made it impractical.

The method and apparatus according to the present invention relate to a completely new technique that fundamentally improves the drawbacks of the prior art.

To specifically explain an example of an apparatus for carrying out the method of the present invention with reference to the drawings, FIG. Rails 2 are two running carts that run on rails 1, and a cross frame 3 provided in the Y-axis direction is fixedly attached to these, and is also provided along the side of this frame 3. The cross beam 4 can be moved up and down by a torch up/down device 5, and a torch 6 is attached to this beam 4.
A torch carriage 8 to which a torch holder 7 is attached is configured to be able to slide along the beam 4 in the Y-axis direction. 9 is a control panel for these devices. To explain the main parts of the above-mentioned device in more detail with a side view, in FIG. 13
and a nut 14 screwed onto the screw 12. A cross rail 15 is attached to the front of the cross beam 4, and a torch carriage 8
By engaging the pinion 17 with the rack 18 of the beam 4 by the prime mover 16, the rail 15 is
It is constructed so that it can be run on. A torch 6 having a spout 19 at its lower end is held by a torch holder 7 and is fixedly attached to the carriage 8, and is configured such that it can be moved up and down by operating a handle 20. In the figure, reference numeral 21 indicates a cutting oxygen stream ejected from the crater 19.

Next, to specifically explain the main parts of the first device according to the present invention, in FIG. It is attached and fixed to the tip of the arm 23. 24 is the cross frame 3
a detector carriage that slides along a guide frame 25 fixed to the lower surface of the prime mover 2;
6, configured to be slidable by a pinion 27, a rack 28 attached to the frame 25, etc.;
Further, the arm 23 is rotatably attached and fixed to the distal end of the carriage 24 by a pin 29.

Since the device of the present invention has the structure as described above,
When carrying out this method, first, the torch carriage 8 is accurately moved to a predetermined position by a numerical signal, and each torch 6 held by the carriage 8 is
Then, the fumarole hole of each crater 19 or the air flow 21 ejected from it is detected by the detector carriage 24 and the detection device 22 predetermined at the same position as the torch carriage 8. The center position of the crater 19 is confirmed by this, and the error between the position of the torch carriage 8 set as described above and the center position of the crater 19 is detected, and if there is an error, the position of the torch carriage 8 is corrected. By doing so, the position of each crater 19 can be set to the correct position. Alternatively, as described above, the crater 19 is predetermined by the torch carriage 8.
The center line of the torch carriage 8 can be detected by the detection device 22, and the Y-axis coordinate value of the detector carriage 24 can be captured as a numerical signal, which can be compared with the position signal given to the torch carriage 8, and the torch carriage position can be corrected based on the amount of error. It is possible.

Furthermore, when cutting the gas after the setting of the crater 19 is completed, the detection device 22 is connected to the arm 2 that supports it.
By rotating 3 on the pin 29, it is possible to escape from the high heat during gas cutting.
Note that the evacuation of the detection device 22 is not limited to the horizontal rotation method of the above embodiment, and the purpose can also be achieved by using a sliding method by horizontal advancement and retreat or a vertical rotation method.

In the above embodiment, the detection device 22 is connected to the arm 2.
3. Detector carriage 24, guide frame 25
It was attached to the cross frame 3 through the
As shown in the figure, this detection device 22 is installed on a detection cart 30 running on the rail 1, and when detecting the position of the crater 19, the detection device 22 is moved close to the parallel cutting device. It is also possible to perform this by placing it below the crater 19, and to move the detection cart 30 away from the parallel cutting device during gas cutting.

Furthermore, this detection device 22 has two
It is also possible to install this in a stand 31 installed in a place where high heat or jets do not reach during gas cutting between the book rails 1. When such a method is adopted, as shown in the figure, the feature is that the spacing setting can be shared among a plurality of parallel cutting devices.

The method and device according to the present invention automatically move the carriage holding the torches using numerical signals to position the torch spacing, and then detect the center of the crater attached to the lower end of the torch using a detection device. By doing this, you can confirm the error due to the installation condition of the torch, and by correcting this error position, you can accurately set the torch spacing. This detection device eliminates the need for setting intervals or manually correcting errors due to torch installation conditions, significantly improving work efficiency, and furthermore detecting the center of the crater. This type has features such as being able to evacuate from below the torch during gas cutting.

[Brief explanation of drawings]

FIG. 1 is a known parallel gas cutting device, and FIGS. 2 to 4 are explanatory diagrams showing one embodiment of the device according to the present invention. 1 is a rail, 3 is a cross frame, 4 is a beam, 6 is a torch, 8 is a torch carriage, 19 is a crater, 22 is a detection device, 24 is a detector carriage, 25 is a guide frame, 30 is a detection cart, 3
1 is a detector stand.

Claims (1)

[Claims] 1. In a parallel cutting device that cuts a steel plate by installing a large number of gas cutting torches in parallel,
After the carriage holding the torch is automatically moved using a numerical signal to determine the torch spacing, the installation state of the torch is determined by detecting the center of the crater attached to the lower end of the torch using a detection device. 1. A method for setting torch spacing in a parallel cutting device, characterized in that the torch spacing is accurately set by detecting an error caused by the error and correcting the error position. 2. In a parallel cutting device that cuts steel plates by installing multiple gas cutting torches in parallel,
A guide frame is attached to the cross frame, a detector carriage is attached so as to be able to slide along this guide frame, and a detection device capable of detecting the center line of the crater attached to the lower end of the torch is attached to the tip of the arm. 1. A torch spacing setting device for a parallel cutting device, characterized in that the arm is rotatably or slidably mounted on the detector carriage. 3. In a parallel cutting device that cuts steel plates by installing multiple gas cutting torches in parallel,
A torch spacing setting device characterized in that a detection cart equipped with a detection device capable of detecting the center line of a crater attached to the lower end of a torch is mounted so as to be able to run on a rail on which the parallel cutting device runs. . 4. In a parallel cutting device that cuts steel plates by installing multiple gas cutting torches in parallel,
A torch spacing setting device characterized in that a detection device capable of detecting the center line of a crater attached to the lower end of a torch is installed between the rails on which the parallel cutting device runs.