RU141149U1 - A CIRCULATION INTENDED FOR MANUFACTURING ROUND, COMPLEX ASYMMETRIC PARTS, CUTTING OF FLANGES, PLUGS FROM STEEL SHEETS AND PIPES IN ANY SPATIAL PROVISION METHOD OF GAS - Google Patents

Abstract

A compass for a gas cutting apparatus, comprising a holder of a gas cutting apparatus and a ruler with printed metric marks, on which a slider with a reference core is fixed, characterized in that the holder is equipped with a bracket for attaching the gas cutting apparatus, a scriber and an extension of the ruler, while the holder is arranged to be placed therein scribblers, and the ruler is made with the possibility of articulating on it the rulers of the ruler.

Description

Compass intended for the manufacture of round, complex asymmetric parts; cutting flanges, plugs from sheet steel and pipes in any spatial position by gas cutting. _b

Moreover, the feature of manufacturing complex asymmetric cuts is provided by the claimed device with high dimensional accuracy.

The closest in technical essence is the universal compass (for cutters) of the trading center “Center for Welding Technology” (site). There is no patent for this device.

The universal compass consists of a bar, a rotating washer for a gas apparatus, which is supported by two wheels and a supporting device that moves along the bar.

Work with the universal compass is carried out for the lower position in the following way: the outer mouthpiece of the gas apparatus (cutter) is fixed in a rotating washer of the compass, which moves with the help of two wheels along the sheet metal blank along any path. If it is necessary to cut a circle from sheet metal, then the desired radius is set on the horizontal bar, which is fixed by the supporting device. Pressing the support device at a given point, we move the cutter along the radius. In both cases, two hands of the operator are involved in operation. This does not allow you to adjust the oxygen supply thereby producing high-quality and accurate metal cutting.

The main disadvantage of this option is the device for cutting any holes in the sheet material is its not universal for carrying out work on complex asymmetric cuts, cutting flanges, plugs for pipes and tapping into pipes. You have to work with this device with two hands, which causes inconvenience in the work, which affects the quality and accuracy of the manufacture of the part. This device does not allow marking of cut parts.

The technical result of the invention is to increase productivity by reducing the time for measuring and marking cut parts.

The technical result is achieved by the fact that the compass rigidly fixes the center of cutting parts and gas cutting apparatus.

The inventive device for the manufacture of round, complex asymmetric parts, cutting flanges, plugs from sheet metal and pipes in any spatial position by gas cutting is shown in Fig. 1-11, where:

- Fig. 1 ruler with metric marks, and the second bar is being expanded;

- Fig. 2, the cylinder has an internal thread for screwing a core made of refractory steel (scriber);

- Fig. 3 bracket for fastening the handle of the torch with fastening devices;

- Fig. 4 a sliding part, slider No. 1 is inserted into the ruler, a thrust part with a double-sided core that moves in the slider is mounted on the slider;

- Fig. 5 the supporting part with double-sided core (compass) is fastened with an M-6 screw; 20 mm long. To the slider number 1;

- Fig. 6, the ruler is extended by a bar, which has a hinge for fracture and is attached by slider No. 2 to the design of slider No. 1 (see Fig. 4)

Example (Fig. 10). When a pipe (coil) crashes, as a rule, the blind joint (tight) is ideally not suitable on one side, and a gap of 20 mm on the other side. The tight joint must be marked and cut. We take a compass, set a certain size and carry the supporting part along the edge of the pipe, and the scriber does the risk. Thus, we cut off what was noted;

- Fig. 7 general view of the device assembly for direct metal cutting;

- Fig. 8A and B are two versions of the complete assembly for cutting metal with a chamfer for small parts, large parts with a swivel joint;

- Fig. 9 marking of a T-shaped insert.

The ruler has a length of 420 mm. with a prefix of 800 mm., which allows you to cut and mark sheet metal produced by our rolled products, as well as pipes of various sizes up to 1600 mm.

The inventive device for the manufacture of round, complex asymmetric parts for cutting flanges, plugs from sheet steel and pipes of any size, by gas cutting, works as follows: Fig. 11

An example of manufacturing a T-shaped insert of two identical pipes:

- draw along the axis of the pipe with a diameter of 219 mm. a straight line L with a length of 500 mm .;

- mark the pipe with a belt in two places, the distance between two circular lines L1 and L2 is 150 mm .;

- on the line L1 which intersects with the line L and in the diametrically opposite place we put two core marks (vertical pivot points);

- on the line L2 we determine the horizontal points and on the diametrically opposite ends we put two core marks the horizontal fulcrum;

- install the supporting part of the device at a distance of 110 mm. from the cylinder for the cutter;

- set the cylinder in the core and mark out the semicircles (the centers of the circle are the horizontal and vertical points of the supports) inside the lines L1 and L2, which we draw around with chalk;

- it is seen that 10-15 mm. the semicircles do not converge, and we cut them into the manual with a gas cutting apparatus when the torch is tilted;

- we attach the cutter to the device at two points (cylinder and bracket);

- install the supporting part with the core at a distance of 110 mm from the torch;

- we abut the supporting part of the device alternately in the vertical and horizontal points of support and the cutter cuts circles inside between the lines L1 and L2.

Thus, we get two identical pipe blanks for a T-shaped insert. In this way we can cut the pipe up to 1500 mm. one cut. At the same time, having received two blanks.

To cut a small diameter, put the asbestos wad on the core needle of the supporting part so that it does not burn.

Ceiling frame example:

- core mark the center of the circle for the inset;

- set the supporting part of the device at a given size of the radius of the insert from the cylinder for the cutter;

- we rest the supporting part of the device at the marked point and cut the circumference for the ceiling insert with a cutter.

- making a complex insert in the ceiling position, the device does not come off the poked place, oxygen can be evenly supplied, since the access of the free hand is provided by the device. The gap between the handle of the torch and the ruler is 50 mm., Which allows you to work in the winter in warm fur gloves.

The supporting part of the ruler has a height of 150 mm., Which allows you to raise the cutter (at an angle to the horizontal) and cut the part with a chamfer.

And also describe how to correctly and technically accurately mark the T-joint.

An example of a T-shaped insert:

The pipe lies in a horizontal position of 1200 mm. we attach a 800 mm pipe to it. and grab by welding for a hard connection. We take it, put the free bar on it, the supporting part of the compass, put the bar on the pipe and lower it until it touches the main pipe. We fix the supporting part on the pipe cut. Thus, we set the size and draw around the circumference of the pipe. We draw chalk around the risk and cut it perfectly exactly the first time. Such a compass is considered universal, as it marks all positions and cuts in any spatial position (Fig. 9).

Thus, the proposed device for the manufacture of round, complex asymmetric parts, cutting flanges, plugs from sheet steel and pipes of any size by gas cutting allows you to:

- significantly increase the productivity of welding by reducing the time for measurements and marking of cut parts;

- improve the accuracy of welding joints in hard to reach places.

Claims (1)

A compass for a gas cutting apparatus, comprising a holder of a gas cutting apparatus and a ruler with printed metric marks, on which a slider with a reference core is fixed, characterized in that the holder is equipped with a bracket for attaching the gas cutting apparatus, a scriber and an extension of the ruler, while the holder is arranged to be placed therein scribblers, and the ruler is made with the possibility of articulating on it the rulers of the ruler.

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