SU1397122A1 - Expander - Google Patents

Abstract

The invention relates to the processing of metals by pressure, more precisely to devices for calibrating pipes by expansion, and can be used in mechanical engineering. The purpose of the invention is to reduce the manufacturing labor intensity and metal intensity. The expander contains an expansion head 6, consisting of segments (C), inside of which a conical rod 4 is located. C are located in nut 7, and between base 2 and ends C there is a retainer in the form of an elastic disc 8 with fingers 9 attached to it in the holes C. The head 6 is installed in the hole of the pipe being distributed, and they act on the handle 1 and the lever 5, which presses the rod 4, pushing C in the radial direction together with the fingers 9 and the elastic disk 8. 7 il.

Description

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The invention relates to the processing of metals by pressure, in particular to devices for calibrating pipes by expansion, and can be used in mechanical engineering.

The aim of the invention is to reduce the complexity of manufacturing and metal consumption.

FIG. 1 shows the expander, a general view; in fig. 2 - the same, top view; in fig. 3 - a clamp, a general view; in fig. four

Chronically pushes all expansion segments 10 of the head together with the fingers 9, the elastic disk 8 and the spring rings 11.

After the expansion of the pipe, the action on the lever 5 and the handle 1 and the springs 11 with the elastic disk 8 is stopped and the expansion segments 10 are brought to their initial position.

Replacing the head 6 for a different diameter

the same, top view; in fig. 5 - a nut, a type of JQ pipe is produced in the following order:

from the bottom; in fig. 6 - expansion head in working position, general view; in fig. 7 - the same, top view.

The expander contains a handle 1 fixed rigidly on the base 2, a clamp 3, a conical brush 4, a lever 5 pivotally connected to the 5 base, an expansion head b and a nut 7. The clamp 3 has an elastic disk 8 on which fingers are fixed along its perimeter 9 The protruding ends of the fingers enter the openings of the expansion segments 10 of the head 6, which are fastened by an annular spring 11, which enters the grooves of a square or intermediate shape, made on the segments 10.

The ends of the fingers protruding from the segments 10 are inserted into the radial directions 10-25 and 1 of the grooves of the nut 7 with the possibility of moving into them. The latch 3 together with the head 6 is fixed in the base 2 by means of a nut 7.

The expander works as follows.

20

unscrew the nut 7, remove the retainer 3 with the expansion head 6 and disengage them. Then the retainer 3 is connected to the required head, inserted into the nut 7 and secured to the base 2.

The invention makes it possible to reduce the manufacturing labor intensity and metal consumption.

Claims (1)

Invention Formula An expander containing a base with a handle, mounted at the base with axial movement of a conical rod, a drive for moving the stem, mounted at the base with the possibility of interaction with the outer surface of the stem and made in the form of segments, an expansion head and a locking position of the segments, characterized in that in order to reduce the labor-intensiveness of manufacturing and metal consumption, the position fixation of the segments is made in the form of Expansion head 6, formed by 30 base and ends of the elastic segments the segments 10, using the pins 9 and the latch 3, insert the nut 7 into the hole, following that the ends of the fingers 9 protruding from the head are located in the radial guide grooves of the nut. The expander head is then secured with a nut 7 on the base 2 of the expander. By inserting the end of the head 6 into the hole of the pipe, they simultaneously act on the handle 1 and the lever 5. The latter presses the conical rod 4, which, moving, is syn35 40 a disc, for example, of rubber with a central hole for the stem and with evenly around its perimeter fixed with the fingers perpendicular to the disk surface, the number of which corresponds to the number of segments, with a through hole in each segment, the number of which are corresponds to the number of fingers, and the fingers of the elastic disk are mounted in the holes of the segments and the grooves of the base. Chronically pushes all expansion segments 10 of the head together with the fingers 9, the elastic disk 8 and the spring rings 11. After the expansion of the pipe, the action on the lever 5 and the handle 1 and the springs 11 with the elastic disk 8 is stopped and the expansion segments 10 are brought to their initial position. Replacing the head 6 for a different diameter the pipes are produced in the following order: unscrew the nut 7, remove the retainer 3 with the expansion head 6 and disengage them. Then the retainer 3 is connected to the required head, inserted into the nut 7 and secured to the base 2. The invention makes it possible to reduce the manufacturing labor intensity and metal consumption. Invention Formula An expander containing a base with a handle, mounted at the base with axial movement of a conical rod, a drive for moving the stem, mounted at the base with the possibility of interaction with the outer surface of the stem and made in the form of segments, an expansion head and a locking position of the segments, characterized in that in order to reduce the labor-intensiveness of manufacturing and metal consumption, the position fixation of the segments is made in the form of the base and the ends of the elastic segments a disc, for example, of rubber with a central hole for the stem and with evenly around its perimeter fixed with the fingers perpendicular to the disk surface, the number of which corresponds to the number of segments, with a through hole in each segment, the number of which are corresponds to the number of fingers, and the fingers of the elastic disk are mounted in the holes of the segments and the grooves of the base. FIG. 2 Fig.Z FIG. five AT 0ifs. YU ;; FIG. 6 YU FIG. 7