SU1389924A2 - Press for rolling shells - Google Patents

Abstract

The invention relates to the processing of metals by pressure and can be used for rolling large-sized shells. The goal is to expand technological capabilities by increasing the size of manufactured shells and increasing productivity by c-dyeing, time spent on retooling, flpecc for rolling shells provided with a means for fastening the removable cross member 5 to the upper crossbars 2. The tool is made in the form of two pressure units, each of which contains a hydraulic cylinder (G) 8, a beam 9 mounted on the hydraulic cylinder rod, two directional columns 10. The beam 9 has protrusions 12 for accommodating a removable cross bar 5. When rolling shells G 8 constant The clamping of the removable cross member 5 against the upper crossbars 2 is carried out, and the gaps between them are selected. The cylinder rod reciprocates along with the movable frame of the press. To remove the finished product, the G 8 is lowered, the removable yoke is removed by a crane from the press area, allowing the shell to be freely removed. 2 Il. Sfi

Description

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J-invention relates to the processing of metals by pressure, can be used for rolling large-sized shells and is an improvement of the invention according to the authors. St. No. 498085.

The purpose of the invention is the expansion of technological capabilities by increasing the size of manufactured shells and increasing productivity by means of cutting, reuse, and time for readjustment.

FIG. 1 is a front view press for rolling shells; in fig. 2 is the same, side view.

The press for rolling shells contains a fixed yoke 1, in the direction of yush, with which the movable frame is installed, a cone, and from the two upper crossbars 2 and the lower traverse 3, fastened with columns 4, and installed between the crossmembers 2 removable traverse 5, the working hydraulic cylinder 6, mounted on a fixed yoke 1, two return cylinders 7, mounted on a fixed yoke 1.

On the traverse 1, under the upper crossbars 2, a device is installed for fastening the removable traverse 5 in the form of two clamping units, each of which consists of a hydraulic cylinder 8, a beam 9 mounted on the rod of the hydraulic cylinder 8, two directions of NL. and installed in the direction of ush, their traverse 1 with the possibility of reciprocating movement in them.

Removable yoke 5 has ledges 11 in places of contact with the beams 9 clamping units, limiting, moving the removable yoke in the longitudinal direction. On the beam 9, there are protrusions 12 forming a groove for accommodating a removable cross-piece 5, which limits its movement in the transverse direction.

On the fixed traverse 1 and the removable traverse 5, the lower firing pin 13 and the upper firing pin 14 are fixed, respectively. At the upper crossbars 2, prisms 15 are installed to accommodate the mandrel 16 with the workpiece 17.

The press works as follows.

The shell 17 heated to the forging temperature with the help of the mandrel 16, the chuck 18 is supplied with a crane (not shown) to the press working space, the mandrel 16 with the shell is placed on the prisms 15. The cartridge 18 is disconnected from the mandrel 16 and connected to the crosspiece 5. Then the yoke 5 on the beams 9 of the clamping units between the projections 12 and the chuck 18 is disconnected from the yoke 5. With the hydraulic cylinders 8, the removable yoke 5 is lifted and pressed against the upper crossbars 2. The chuck 18 is connected to the mandrel 16 and the crane lifts the mandrel 16 with the shell 17. When rolling shell hydraulic cylinders 8 n stroke are the working pressure fluid and is performed detachable clamp crosshead 5 to the headrail 2, wherein the rods of hydraulic cylinders 8 reciprocating movement together with the movable frame of the press. By successive moves of the movable frame, the workpiece 17 is crimped. The workpiece is rotated by means of a mandrel 16 placed on a crane equipped with a drive for rotating the mandrel. As a result, the workpiece is rolled out. Removing the rolled shell is performed in reverse order.

The use of the proposed construction of the device for fastening the removable cross member to the upper crossbars in the form of two clamping assemblies will simplify the assembly of the removable cross member, increase its dimensions and thereby expand the range of rolled shells.

Claims (1)

Invention Formula Press for rolling shells by author. St. No. 498085, characterized in that, in order to expand technological capabilities by increasing the size of manufactured shells and increasing productivity by reducing the time for readjustment, the device for fastening the removable cross member to the upper crossbars is made in the form of two pressure units, each of which is made in the form of a hydraulic cylinder with a rod placed on a fixed cross beam, a beam fixed to the rod and carrying two guide columns, installed symmetrically with respect to the hydraulic cylinder with the possibility w displaceable in guides fixed crosspiece, wherein the beam is provided with protrusions for receiving therein a removable yoke, and hydraulic cylinder stroke is not less than the working stroke of the hydraulic cylinder. eleven 1S  ///////// A w yp ъ 7 te 1