SU404529A1 - VPTB - Google Patents

Description

one

This invention relates to the field of metal forming.

Devices for calibrating distribution pipes are known, comprising a frame with a head mounted thereon, made in the form of radially sliding sections using a driving wedge of sectors.

To enable the pipe to be calibrated without turning over at both ends and over the entire length and improving the quality, the proposed device is equipped with a second head located in the carriage moving along the bed, and roll-in rollers mounted in racks, one of which is mounted on the bed and the second movable carriage, and connected to the drive for their movement in a direction perpendicular to the horizontal axis of the device, wherein both heads are configured to rotate around the horizontal axis of the installation from water located in the movable carriage.

To reduce the specific pressure of the sectors on the rollers in the process of editing, the contacting surfaces of the sectors can interact with each other but helixes.

FIG. 1 shows the proposed device; in fig. 2 is a view along arrow A in FIG. one.

The device for calibrating tubular parts consists of a bed 1, a rack 2 mounted on it, carrying a trunk 3, at one end of which there is a head 4 rotating around a horizontal axis with sectors made up of components: internal 5, interacting with each other through slit joints, and workers 6, interacting with each other but spirals; wedges 7, reducible and divorced from the hydraulic cylinder 8 installed at the other end; a movable carriage 9 comprising a head 10 with sectors 11 and 12; wedges 13, reducible and diluted from the hydraulic cylinder

14; a drive 15 for rotating the head 10 around a horizontal axis by means of a gear 16 and a gear pair 17; running rollers 18, located around the head 10 on the frame and driven by hydraulic cylinders 19;

a feed mechanism 20 leading the carriage to translational motion by means of an electric motor 21, a gearbox 22 and a screw 23; supports 24 with rolling rollers 25 radially arranged around the expansion head 10, driven by hydraulic cylinders 26, and a loading mechanism 27 for receiving and feeding the pipe 28 to the working position. The device also contains a hydraulic station and a remote control (in the drawing

conventionally not shown).

The device works as follows.

An annular part, for example a pipe 28, is fed to the loading mechanism 27, which raises it to the center axis of the device and turns on the electric motor 21. The latter, using a gear 22 and a screw 23, feeds the carriage 9 forward, with the result that the expansion head 10 enters the pipe until until the stop 29 closes the limit switch 30, which sends a signal to the hydraulic cylinder 14. As a result, the hydraulic cylinder, not moving with the help of wedges 13, pushes the And and 12 sectors of the extension head 10 to a predetermined size and The limit switch 32 turns on, which turns on the actuator 15, which rotates the head 10 around the horizontal axis by means of the gear 16 and the gear pair 17. At the same time, the limit switch 32 sends a signal to the hydraulic cylinders 19, which feed the rollers 18 to the pipe, as a result of which the pipe end is calibrated . The run-in time is established empirically using a time relay. After a certain time has elapsed, the rolling rollers 18 return to their original position. Upon further advancement of the carriage 9, the processed pipe also moves forward and is put on the head 4, which in turn is fixed to the post 2. When the stop 33 reaches the limit switch 34, a signal is sent to the hydraulic cylinder 8, which pushes the sectors 5 and 6 to wedges 7 of a given size, and on the hydraulic cylinders 26, supplying the rolling rollers 25 to the pipe, as a result of which the second end of the pipe is calibrated.

When only the pipe ends are calibrated, the longitudinal feed of the carriage 9 is stopped, and the time relay after a certain time issues a command to retract the rolling rollers 25, flatten sectors 5 and 6 and retract the carriage 9 to its original position, and in a certain place the pipe is released and freely mechanism 27, and the carriage 9 takes its original

position. Further, the cycle of operation of the device for calibrating the ends of the pipes is repeated.

When calibrating the entire length of the pipe at the time of the supply of rolling rollers 25 to the pipe,

its supply is stopped for a certain time, and then the pipe is turned on again until a full calibration of the pipe takes place, i.e. the stop 35 closes the limit switch 36. The latter turns off the pipe supply, gives a command to retract the rollers 25, to flatten sectors 5 and 6, retract the carriage 9 to its original position, with the pipe free at a certain place and the carriage 9 to be in its original position.

Further, the cycle of operation of the device for calibrating the entire pipe is repeated.

Subject invention

Claims (2)

1. A device for calibrating pipe distribution, containing a frame with a head mounted on it, made in the form of sliding in the radial direction using a driving wedge of sectors, characterized in that, in order to enable the calibration of a pipe without its turning around at both ends and along the entire length and quality improvement, it is equipped with a second head located in the carriage moving along the bed and run-in rollers mounted in racks, one of which is mounted on the bed, and the second on the movable carriage, and connected to the drive for their movement in a direction perpendicular to the horizontal axis of the device, wherein both heads are configured to rotate around the horizontal axis of the installation from drive located in the movable carriage. 2. The device according to claim 1, characterized in that, in order to reduce the specific pressure of the sectors on the rollers in the dressing process, the contacting surfaces of the sectors can interact with each other but spirals.