SU1299713A1 - Arrangement for cutting tubes - Google Patents

Abstract

The invention relates to the processing of metals by pressure and can be used in mechanical engineering for cutting pipes into dimensional workpieces. The purpose of the invention is to increase the reliability of a pipe cutting device. For this purpose, a shnindel (Sh) 10 is installed in the housing 1, carrying a radially sliding slider 12 with a cutting tool 16 that is freely rotatable with respect to Sh 10 and made in the form of a flat ring with an inner one-sided cutting edge. The slider 12 through the roller 13 interacts with the feed mechanism in the form of a sleeve 20 with an inner conical surface 21. Coaxially, a collet clamp 9 is mounted coaxially 10. During rotation of W 10 and the interaction of roller 13 with surface 21, tool 16 rolls with its cutting edge over the surface of pipe 30 simultaneous introduction of the cutting edge into the body of the pipe wall. 6 Il. 11 s 1chE CO 00 Fg / g. g

Description

The invention relates to the processing of metals by pressure and can be used in mechanical engineering for cutting pipes into dimensional workpieces.

The purpose of the invention is to increase the reliability of the device for cutting pipes.

FIG. 1 shows a schematic representation of the proposed device for cutting pipes, of its shape, section view; in fig. 2 is a section A-A in FIG. one; in fig. 3 is a section BB in FIG. 2; in fig. 4 is a view of FIG. one; in fig. 5 - the position of the cutting tool relative to the pipe, the initial position; in fig. 6 - the same when cutting.

The device for cutting pipes contains a corpus 1 with a stand 2 on which a cylinder 3 is fixed with HOpuiHeM 4 mounted in it with a tubular rod 5. Between the walls of the cylinder 3 and the piston 4 is formed1) 1 working cavities 6 and 7. The cover 8 cylinder 3 fixed collet clamp 9, the conical part of which is included in the conical bore of the rod 5. On the housing 1 in the bearing assembly is mounted a spindle 10 with a head 11, in which in the transverse groove there is a slide bar 12 with a roller 13. In the opening of the slide block 12 in the bearing assembly 14 the sleeve 15 is installed with the cushion fixed in it im tool 16, made in the form of a flat ring with an inner one-sided cutting edge. The slider 12 is pressed to its original position by the spring 17, and the axis of rotation of the tool 16 coincides with the axis of rotation of the spindle 10. The position of the slider 12 is adjusted by a screw 18. In the guide groove of the housing 1 there is a slider 19 with a holder 20 fixed on it, the inner surface 21 which is made conical and in working position interacts with the roller 13 of Yulzun 12. The slider 19 is connected to the piston rod 22 of the piston 23, mounted pooatuioro in the cylinder 24 fixed to the rack 2. Working strips are formed between the piston 23 and the walls of the cylinder 24 Q Ty 25 and 26. In cover 27 ilindra 24 mounted stop screw 28, which regulates the stroke length of the piston 23. On the spindle 10 is fixed a pulley 29 connected to the rotation drive.

By the interaction of the conical surface 21 of the cage 20 with the roller 13, the conical surface moves the slider 12 in radial direction through the roller, the axis of rotation of the cutting tool 16 is shifted eccentrically relative to the axis of rotation of the spindle 10 and the cutting edge of the tool 16 is inserted into the wall of the pipe 30 (Fig. 6). Due to the strength of the friction between the tube 30 and the tool 16 tool

10, together with the sleeve 15, is rotated in which the cutting edge of the tool 16 rolls around the wall of the pipe 30. After cutting the workpiece, the compressed air is fed into the cavity 25 of the cylinder 24, and the cavity 26 is connected to the outer medium 5 and the sleeve 20 is retracted . The slider 12 by means of the spring 17 is also retracted to its original position and the axis of the tool 16 is set along the axis of rotation of the spindle 10. The feed of the compressed

2Q of air into the cavity 7 of the cylinder 3, the piston 4 with the rod 5 interleaves into an inoperative position, the lobes of the clamp 9 unclench and the pipe 30 is moved in the axial direction for the length of the workpiece. The next clamping cycle and pipe sections are performed in a similar sequence, and the rotational drive is not turned off. The initial position of the slider 12, in which the axis of rotation of the tool 16 coincides with the axis of rotation of the spindle 10, is adjusted by a screw 18. For the working stroke of the slide 12, i.e. the offset of the axis of the tool 16 axis relative to the axis of rotation of the spindle 10, is limited by the stroke of the piston 23 and, therefore, the holder 20.

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Claims (1)

Invention Formula A device for cutting pipes, comprising a housing, a pipe clamping mechanism, a cutting head, made in the form of cases carrying a slider with a cutting tool, and a mechanism for radial movement of a sliding tool in the form of a yoke with an inner conical surface, the installation operates as follows. 45 in a housing with the possibility of an axle tube 30 for a certain length are fed in the direction of arrow G into the opening of the collet clamp 9. By supplying compressed air to the cavity 6 of the cylinder 3, the pipe 30 is fixed with the collet clamp 9. By activating the drive (not shown) with the slide rod 10 through 50 pin 29 is rotated. The supply of compressed air to the cavity 26 of the cylinder 24 of the yoke 20 through the elements 23, 22, 19 is associated with axial movement. movement and interaction with the slide, characterized in that, in order to increase reliability, it is provided with a sleeve installed in the slide with the possibility of free rotation relative to it, and the cutting tool is made in the form of a flat ring with an inner one-sided cutting edge located in the plane of its end face facing the clamping mechanism and secured in the sleeve. By the interaction of the conical surface 21 of the cage 20 with the roller 13, the conical surface moves the slider 12 in radial direction through the roller, the axis of rotation of the cutting tool 16 is shifted eccentrically relative to the axis of rotation of the spindle 10 and the cutting edge of the tool 16 is inserted into the wall of the pipe 30 (Fig. 6). Due to the strength of the friction between the tube 30 and the tool 16 tool together with the sleeve 15 is driven into rotation, in which the cutting edge of the tool 16 rolls around the wall of the pipe 30. After cutting the workpiece, the compressed air is fed into the cavity 25 of the cylinder 24, and the cavity 26 is connected to the outside: The sleeve 20 is retracted. The slider 12 by means of the spring 17 is also retracted to its original position and the axis of the tool 16 is set along the axis of rotation of the spindle 10. The feed of the compressed air into the cavity 7 of the cylinder 3, the piston 4 with the rod 5 interleaves into an inoperative position, the petals of the clamp 9 are expanded and the pipe 30 is moved in the axial direction by the length of the workpiece. The next clamping cycle and pipe sections are performed in a similar sequence, and the rotational drive is not turned off. The initial position of the slider 12, in which the axis of rotation of the tool 16 coincides with the axis of rotation of the spindle 10, is adjusted by a screw 18. For the working stroke of the slide 12, i.e. the offset of the axis of the tool 16 axis relative to the axis of rotation of the spindle 10, is limited by the stroke of the piston 23 and, therefore, the holder 20. Invention Formula A device for cutting pipes, comprising a housing, a pipe clamping mechanism, a cutting head, made in the form of cases carrying a slide with a cutting tool, and a mechanism for radial movement of a slide in the form of a yoke with an inner conical surface, fixed movement and interaction with a slide, characterized in that , in order to increase reliability, it is equipped with a sleeve installed in the slide with the possibility of free rotation relative to it, and the cutting tool is designed as a flat ring with an inner one-sided p The cutting edge located in the plane of its end face facing the clamping mechanism is fixed in the sleeve. /eight / 7 20 / 5 75 30 FIG. J Type B us.5 CiicTaiiiire. ib s f & ii. iHMOiioB Editor S. Lisinats -; (,: I. iifptc Corrector A. Zimokogo Order 811/10 GIR-. W7nSubscribe VNIIPI State; -) komsetp S. iio lelam inventions and discoveries 1 13035, - Moscow, F - ZL. i aviiicK; m naO., d. 4/5 Production; -11 full-graphical; .- п |; (:,:,. - Uzhgorod, Proektna str., 4 .,eight