SU923748A1 - Die for cutting tubes - Google Patents

Description

The invention relates to the processing of metals by pressure, in particular for cutting hollow shells and pipes.

A device for cutting pipes is known, which includes a support with a cavity for placing and clamping a pipe, a cutting unit above * ⁵ in the form of two rods, disposed. diametrically opposed to the cavity of the cross-bar that rigidly connects the rod between itself and the notching tools • attached to the rods with the possibility of horizontal reciprocating movement, the cutting unit in the form of a wedge tool installed with the possibility of vertical reciprocating movement and acting as an electric motor connected by intermediate mechanisms with cutting and cutting nodes and with a support [1].

The disadvantage is in the complexity of the design, as well as in the great effort of notching, which increases the power

2

engine dimensions of the device and reduces performance.

A known stamp for cutting pipes containing a movable and a fixed plate, a support ό with a cavity for accommodating a pipe, mounted on a fixed plate, an incision unit in the form of two. rods diametrically opposed to the cavity, the cross bar, the rigidly connecting rod between them, the drive connected: · with the cross bar, and scoring tools mounted on the rods with the possibility of horizontal reciprocating movement, and the cutting unit in the form of a wedge cutting tool connected with mobile PLATE [23.

The lack of a punch consists in the impossibility of cutting thick-walled pipes, since in one move the knife can remove up to 2 mm, as well as in a large drive power, which makes the performance of the punch low.

923748

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The purpose of the invention is to increase productivity.

This goal is achieved by the fact that a stamp for cutting pipes containing a movable and fixed plate, a support with a cavity for accommodating a pipe, mounted on a fixed plate, an incision assembly in the form of two rods positioned diametrically opposite to the cavity, a cross member,

rigidly connecting rod between them, a drive connected to the crossbar and notching tools mounted on the rods with the possibility of horizontal reciprocating movement, and a cutting unit in the form of a wedge cutting tool connected to the movable plate, is additionally equipped with rails for the rods mounted on the fixed plate height-adjustable stop mounted on a movable plate, and a sensor mounted to interact with the stop and electrically connected to the node drive notches, notching tools which are made in the form of incisors with cutting edges that are offset along you. sauté in the direction of movement of the rods.

FIG. 1 shows a stamp (all nodes are shown in the final working position, the dotted lines indicate the initial position of the scoring tools); in fig. 2, section A-A in FIG. one; in fig. 3 section bb in fig. one.

The stamp consists of a fixed plate 1, a support 2 with a cavity 3 for placing the pipe 4 and the notch assembly 5 placed on the fixed plate 1 and a cutting node fixed on the sliding plate 7 ·

Bearing 2 is made in the form of a holder 8 mounted on the bottom plate 1, two coaxially mounted sleeves 9 and 10 and gaskets 11 and 12 to adjust the distance between them. The internal cavity 3 of each sleeve can be conical (Fig. 3) · Holders and sleeves can be made detachable, providing a pipe clamp. Such an implementation of the holders and sleeves is necessary when cutting a large range of pipes. Node 5 notches made in the form of rods 13 and 14, placed diametrically opposite to the cavity 3, the cross member 15, rigidly tying the rod between itself, the guides 16 for accommodating the rods 13 and

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thirty

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14 mounted on the fixed plate 1, the actuator 17 in the form of, for example, a power cylinder, and notching tools 18 mounted on the rods 13 and 14 with the possibility of horizontal joint reciprocating movement. The notching tools 18 are made in the form of successive incisors, the cutting edges 19 and 20 of which are offset in height in the direction of movement of the rods. With this arrangement of cutting edges, each cutter cuts off a small thickness of the metal, providing a total thickness equal to the thickness of the pipe wall. The initial position of the cutters 18 is shown in FIG. 1 dotted line.

The cutters 18 can be fastened to the rods with screws 21. The rods 13 and 14 are fixed against rotation in the crossbar

16 pins 22 ..

The cutting unit is made in the form of a wedge cutting tool 23, which is attached to the movable plate 7, interacting with the press ram (not shown). Fastening tool. 23 is carried out using the holder 24 and the clamping plate 25, located on both sides of the wedge cutting tool, and pins 26.

For the direction of the movable plate 7 relative to the fixed column serve 27 and the sleeve 28.

On the movable plate 7 has a height adjustable stop 29 ,. and on the housing of the actuator 17 "sensor 30, electrically connected to the actuator

17 and interacting with an adjustable stop 29.

The stamp works as follows.

When lowering the top plate 7 of the stamp, the adjustable stop 29, pressing the sensor 30, turns on the drive 17 of the notch unit 5. The notch assembly makes a working stroke, while the incisors 19 push the two grooves on the pipe 4, exposing the pipe cavity. After the incisors leave the working area, they stop and a wedge cutting tool 23 comes into operation. When the movable plate is raised, the wedge cutting tool and then the incisors return to their original position.

The presence of stepped

incisors extends the range of cut

pipes and increases productivity

stamp.

5 '' 923748 6

Claims (1)

Claim A punch for cutting pipes containing a movable and fixed plate, a support with a cavity for accommodating a pipe, mounted on a fixed plate, an incision unit in the form of two rods diametrically opposite to the cavity, a cross member rigidly connecting the rod between itself, a drive connected to the cross member, and notching tools attached to the rods with the possibility of horizontal reciprocating movement, and a cutting unit in the form of a wedge cutting tool associated with a movable plate, distinguishing By the fact that, in order to increase productivity, it is equipped with guides for rods, mounted on a fixed plate, height-adjustable stop * mounted on a movable plate, and ₅ sensor installed with the possibility of interaction with the stop and electrically connected to the notch unit drive , the notching tools of which are made in the form of cutters with <0 cutting edges displaced in height in the direction of movement of the rods.