SU43262A1 - Flange mirror turning device - Google Patents

Description

As is well known, for the reliable connection of steel pipes to pipelines, air ducts, gas pipelines, etc., it is required that the end face of the flanges be completely smooth. When installing pipelines, flanges at the ends of pipes are usually reinforced by flaring and folding, and at high pressure they are also welded, and the flanged edges of the pipes together with the welded metal form an uneven surface, which must then be machined. In order not to waste time on carrying the pipes to the workshop for installing them on the machine and for returning the pipes to the installation site, a device is offered with which you can grind the flange mirror in place.

This device has, as well as devices known so far for this purpose, a cam device attached in the tube cavity and carrying a central spindle. New in the device is a mechanism for the simultaneous rotation of the cutting mandrels around the axis of the pins and the cross-feed. In this mechanism, a Novorot slab is applied, with the aid of which the rotation of worm wheels screwed onto the tool holders and coupled to a fixed worm on the specified stem is achieved.

In FIG. 1 depicts a longitudinal section of the device in the working mode (401)

lying; Fig 2 is a section along AA; FIG. 3- section along explosives; FIG. 4-section but SSg FIG. 5-section according to EE-FIG. one.

In the drawing, a conditional dotted line shows a pipe /, the mirror 2 of whose flange must be turned. For fixing the device on the tube, Oi has a cartridge 3 (Fig. 1 and 3) with through rectangular holes around the circumference, in which the racks (Fig. 1 and 3) coupled to the gear sleeve 5 (Fig. I and 3). By turning the sleeve in one direction or the other with the handle b (Fig. 1 and 4), the cartridge can be installed quite firmly inside pipes of different diameters. A gear wheel 7 (FIG. 1), loosely seated on the stud 5 and coupled to the gear sleeve, serves to firmly fix the position of the rails open to failure, which is achieved by tightening the nut 9 (FIG. 1) using the wrench (( (Fig. 4).

In incisor mandrels (2), incisors are fastened, which are fed here by a pair of worm gears 7 / (Figs. 1 and 2), which sit like nuts on the threads of mandrels (2), which can freely move back and forth in rails 75 fitted with slides pins to keep the mandrels from rotating. Worm wheels / 7 are coupled with a fixed screw 74 (Fig. 1 and 2), BOKpyj- of which they rotate, driven by a plate 75 (Fig. 1 and 5), having.

from the back side protrusions / b for driving it into motion. The arrows on all figures in the drawing indicate the direction of movement of the individual organs of the mechanism.

A special feature of the worm gearbox is, firstly, that it has two hollow axles: one axis / 7 (Fig. 1) as the thorn of the worm gear 75 (Fig. 1) with cutouts for gripping the projections of the plate 75 (Fig 1 and 5) is leading and driving the cutting unit; the other, in the form of a pin, is 79 fixed in the sense of rotation, as it is held by the keys 20 (Fig. 1) fixed in the plug 2 / cartridge and corresponding milling on the end of the fixed axis (dashed line in Fig. 1). This axis is integral with the gearbox housing and at the same time serves as a support for the instrument, but it is axially movable, which allows the user to use it as a support when cutting the cutters normally to the flange mirror. On the same axis, the fixed roll of the worm is to / 4.

The lobe feed of the incisors is carried out and adjusted by the handwheel 23 (Fig. 1) with a thread in the bollard and a bolt 22 inserted inside the fixed axis and secured by the help of the thread in the plug 27.

As can be seen from the drawing, the assembly and disassembly of individual parts of the device does not present any great difficulties.

The device is set in motion from electric motors by means of a flexible shaft connected either directly to the free end of the screw 24 of the gearbox or to the input shaft of the additional transmission, which can optionally be attached to the gearbox of the gearbox and make it one insignificant power of motorcycle and flexible shaft.

The subject matter of the invention.

A device for turning mirrors of flanges using for fixing it in the tube cavity a cam device equipped with a central clamp, characterized by the attachment of a swivel plate 75 designed for wrench1, and screwed on incisor mandrels / 2 worm wheels 77 coupled with a fixed worm 74 on a shaft pin. 79 in order to carry out the simultaneous rotation of said mandrels around the axis of the shpindles and their transverse feeding.

to composer ownership to N. N. N. Kudr and M. I. Sezgenov, No. 43262

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