SU1470475A1 - Cutting unit - Google Patents

Abstract

The invention relates to cutting and can be used in the manufacture of segments and cuttings during gas cutting of pipes. The purpose of the invention is to increase productivity. At least two cutter holders 15 are installed on the frame, and every second one is opposed to the next. Holders are installed with the possibility of vertical and horizontal movement. This design allows the pipe to be cut at the same time into several segments without retooling the installation. 10 il.

Description

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The invention relates to the field of cutting and can be used in pipe cutting, in particular in the manufacture of parts of pipe bends and pipe tees.

The purpose of the invention is to increase labor productivity by reducing changeover time.

FIG. 1 shows the installation, general view; in fig. 2 - 6 - types of products obtained at the facility; in fig. 7 is a section A-A in FIG. one; in fig. 8 is a view of B in FIG. in fig. 9 is a view of In figure 1; in fig. 10 is a diagram of the installation of cutters when manufacturing segments of bends.

The installation is intended for the manufacture of tee parts consisting of a shell 1 and a separation 2, obtained by cutting tubular blanks. To do this, a round hole 3 is cut out in the shell, and a cut-off cut 4 is made in the cut. The installation can cut the flanges 5 and also cut the pipe 6 along the cutting lines 7 into segments 8, from which a branch 9 is then assembled. 1) consists of a base 10, on which a table 11 with a vertical axis of rotation is mounted. The table is intended for mounting a pipe-blank on it and clamping it relative to said axis.

Stand 12 is rigidly connected to the bed. A frame 13 vertically moves inside the rack in guide rollers (not shown) on which the holders 14 of the cutters 15 for cutting the segments are mounted.

The holders have the ability to move relative to the vertical axis from the springs, and in the retracted state are fixed (not shown). /

The column 16 is rigidly fixed to the frame and the holder 17 is connected to the rod 18, on which the guide assembly 19 is rigidly fixed with the frame 20. The rod 18 is rigidly connected to the axis 21 freely rotating in the holder 17 (Fig. 7). The latter can be rigidly fixed by known methods on the column.

The guide assembly 19 (Fig. 8) consists of a pipe 22, axes 23 rigidly connected to it, on which the rollers 24 are seated, and a shoe 25, which serves to restrict the lowering of the rod (the shaft rests on the surface of the pipe - then 1 ovki).

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Frame 20 consists of guides 26, rods 27 and 28, rods 29 are fastened to rods 28, along the longitudinal axis of which the mounting holders 30 and 31 have the possibility of mounting movements, on which respectively the copy roller 32 and cutter 33 are installed for cutting out dilidric holes ( Fig. 3).

The frame 13 moves away from the crank (not shown) with an adjustable radius synchronously with the rotation of the table. The crank may be mounted on one of two camshafts (not shown). One shaft makes one revolution in one revolution of the table, the other shaft makes two turns.

The first shaft is designed for cutting segments 8, the second for cutting 4.

The table drive (not shown) has an adjustable rotational speed.

When cutting the cylindrical holes in the pipes, a dentric prism 34 is installed on the table.

The installation works as follows.

When cutting a pipe into segments, the pipe segment (Fig. 10) becomes vertical (the longitudinal axis of the pipe must coincide with the axis of rotation of the table). The cutters 15 are mounted at the vertical position and are pressed against the workpiece by springs. The nozzles of the cutters should lie in a vertical plane passing through the axis of rotation of the table. The middle cutter is located. opposite to the other two. When the table is rotated, all three torches move simultaneously: at the half-turn of the table - up, on the other half turn - down. Upon completion of the turn, the cutters return to their original position. Obviously, the cutters can all work simultaneously; either two or one at a time. Naturally, in the latter case, you need three turns of the table to cut the segments into one tap.

When cutting cuttings 2, the installation works in the same way, with the only difference being that one cutter is used and the crank makes two turns per revolution of the table. In principle, one can use two opposedly located, but on the same level, cutter. In this case, the table will make a half turn.

When the hole 3 is cut, a centering prism 34 is placed on the table on which the workpiece is placed, while the longitudinal axis of the workpiece is perpendicular to the axis of rotation of the table, both axes lie in a common plane. Then, the rod 18 is lowered until the shoes 25 are in contact with the workpiece, and the roller 32 and the cutter 33 (Fig. 9) are installed at equal distances from the axis of rotation of the table opposite each other. Then start the cutter and turn the table on. Hole 3 is obtained in one revolution of the table.

Equal to the roller and the cutter from the axis of rotation of the table ensures that the gap between the nozzle of the cutter and the surface of the pipe is the same, i.e. the stability of the cutting process is ensured. The point of contact of the roller lies just below the line supposed to be G2. 73-.

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Cutting to avoid lowering the boom after the end of the cycle.

Claims (1)

Invention Formula A cutting machine comprising a table mounted on a frame with a vertical axis of rotation, a table rotation drive with adjustable speed, a frame installed with the possibility of a vertical adjustable movement in the bed guides synchronously with the foot drive, and a cutter holder, characterized in that increase productivity and reduce changeover time when cutting pipes into segments; on the frame, at least two cutter holders are installed with the possibility of vertical and horizontal movement; zhdy second bracket op- pozitno located in relation to the next. srig.1 FIG. 2 R GL Thebes. 7 FIG. 0m b Type B 21 FIG. at 31 Type B Fiz.9