RU1816544C - Apparatus for holes processing - Google Patents

Abstract

Usage: in mechanical engineering, in particular when processing the inner surface of pipes and channels such as pipe in pipe, in the energy industry. SUMMARY OF THE INVENTION: the device comprises a hollow body 1 made of a telescopic base 5 and a retractable 6 parts, a mandrel 12 with a wedge 13, sliders 3 and 4 with AND cutting tools 2 and a guide sleeve 8. The sliders 3 and 4 are installed in the diametrical groove 7, made in the main 5 part of the housing 1. The guide sleeve 8 is mounted on the sliding part 6 of the housing 1. In the housing 1 there is a channel for supplying compressed air to the tool 2. By rotating the nut 14, the mandrel 12 is lifted and the wedge 13 extends the sliders 3 and 4 sec cutting tool 2. Change in radius and positioning of the cutting tools 2 is adjusted in height lift mandrel 12, and the change of height positioning of the cutting tools 2 adjusted value bias the sliding part 6 of the housing 1 with respect to its main part 5. 1 z.p.f BACKGROUND yl 4.

Description

The present invention relates to mechanical engineering and may find application in the treatment of the inner surface of pipes and pipes such as pipe in pipe in the energy and chemical industries. An object of the present invention is to expand technological capabilities.

In FIG. 1 shows the proposed device, a General view; figure 2 is the same, section aa; Fig. 3 shows a knife, view B; figure 4 shows a part of the housing (enlarged).

The device for processing holes contains a hollow body 1, a cutting tool 2, mounted on the sliders 3 and 4,

The body is made telescopic from the main 5 and retractable 6 parts. Sliders with cutting tools are installed in the diametrical groove 7 in the main part of the body. The sliding part of the housing in its lower part has a guide sleeve 8, which is rotatably connected to the housing by means of uiarices 9. The sleeve is preloaded by means of a thrust ring 10, which fits into the groove of the housing. The amount of displacement of the sliding part of the housing is fixed by the latch 11.

A mandrel 12 with a wedge 13 is mounted with a longitudinal movement inside the housing cavity. The mandrel is secured by a nut 14 and interacts with a rotation drive. The nut adjusts the travel of the mandrel. A scale is divided on the mandrel. The wedge of the mandrel interacts with the sliders by means of bevels made on them. The slant angle of the slider is equal to the angle of the wedge.

A channel 15 for supplying compressed air is supplied to the tool in the housing.

Air is supplied from the highway by means of tubes 16 connected to the channel by one end and the other through a hole 17 in the housing to the cavity 18 formed by the mandrel and the housing.

The drawing also shows two pipes 19 and 20 of the technological channel with an annular pocket.

The device operates as follows.

The device is placed in the technological channel, installed by the guide sleeve of the sliding part 6 of the housing 1 on its protrusion and is centered. The rotation of the nut 14, the mandrel 12 rises and the wedge 13 extends the sliders 3 and 4 with the knives 2 (tool) until they are placed above the processed ends of the pipes. The change in the radius of the knife is controlled by the height of the mandrel in accordance with the scale marked on it, and the change in the height of the knives is controlled by the displacement of the sliding part of the body relative to the main part 5. Then the device is rotated along the guide sleeve 8 and the ends of the pipes are processed.

After processing the ends of the pipes, the device is removed, the telescopic body is shifted by an amount equal to the depth of the pocket, fixed by the latch 11 and placed again in the technological channel, then the mandrel is lifted, the knives are pulled apart by sliders until they are placed above the annular pocket and the device is installed with its guide sleeve whereby the knives are placed in an annular pocket.

When the device is rotated, compressed air is simultaneously supplied to the tool operating zone through channel 15. The pocket is completely cleared of chips from the movement of knives and the action of an air stream.

At the end of operation, the device is lifted to exit the knives from the pocket, the knives are brought down and the device is pulled to the surface.

A positive effect of the proposed technical solution is the expansion of technological capabilities of the device.

Claims (2)

1. The device for processing holes containing a hollow body, inside which is mounted with the possibility of longitudinal - movement of the mandrel with a wedge, designed to interact with the drive rotation, sliders with cutting tools installed in a diametric groove made in the housing, with the possibility of interaction with the wedge of the mandrel through executed on them bevels and displacements in the radial direction, and a guide sleeve mounted on the housing rotatably, characterized in that, in order to expand technological capabilities, the housing is made telescopic of the main and sliding parts, while the sliders with cutting tools are installed in the main body part and the guide sleeve on its retractable 5 parts. 2. The device according to claim 1, with the proviso that, in the housing, a channel is made for supplying air to the cutting tools. View B Fi g. 1 Fig a