SU1801068A3 - Device for clamping rolled metal - Google Patents

Description

The invention relates to the field of machine tools and can be used in mechanical engineering and other industries of the national economy for clamping metal bars, pipes and other workpieces such as bodies of revolution with a diameter of 10 ... 60 mm.

The aim of the invention is to improve the clamping reliability and simplify the design.

FIG. 1 shows a device for clamping rolled products, general view (initial position of the fixing unit); figure 2 is the same, in the clamping position; Fig. 3 - node I in Fig. 2.

The device for clamping rolled stock 1, located on a support device, for example, on a roller table (in Fig. It is indicated by thin lines), contains a frame 2 on which a drive 3 is mounted, made, for example, in the form of hydraulic or pneumatic cylinders pivotally connected to the frame 2 and a pressure beam 4. The pressure beam 4 is equipped with a guide made, for example, in the form of a rack 5, one end of which is rigidly fixed to the frame, and the other 25 end is placed in the hole 6 of the pressure beam 4. The pressure beam 4 has a support surface 7 and a position fixing unit rolling made in the form of an axis 8, on which, for example, three identical springs 9, 10, 11 are installed, screwed into one another in such a way that the coils of one spring, for example, the spring 9, are placed between the coils of other springs, respectively between the corresponding coils of the springs 10 and 1.1. The axis 8 is located in the grooves 12 and 13 made in the clamping beam 4. In the clamping beam 4 one or more axes 8 can be installed, located parallel to each other.

The device works as follows.

The rolled package 1 lying on a support device, for example a roller table, is located in the area of the clamping device. 45 Drive 3 is switched on (in this case, two. Hydraulic cylinders located on both sides of the rental package 1) and the pressure beam 4 moves in the direction of the rental 1 along the rack 5 installed in the hole 6 of the pressure beam 4. The articulated connection of the drive 3 (hydraulic cylinders) with a frame 2 and a pressure beam 4 made it possible to simplify the design. When the pressure beam 4 moves, first the springs 9, 10 11 touch the rolled surface 1 with their outer surface and stop, and then the axis 8, touching the inner surface of the springs 9, 10 and 11, stops. With further lowering of the pressure beam 4, the axis 8 remains stationary relative to the springs 9, 10 and 11 and the rolled 1, and moves in the grooves 12 and 13, • made in the pressure beam 4. without taking any loads, when the supporting surface 7 of the pressure beam 4 touches the outer surface of the springs 9, 10 and 11 and the force created by the drive 3 reaches a certain value and is sufficient for reliable clamping of the rolled stock 1, the pressure beam 4 stops. In this case, the force created by the drive 3 is transmitted to all coils of the springs 9, 10 and 11, and, consequently, to the rolled metal 1, which ^{turns out to be:} clamped by at least one coil of springs and two adjacent blanks (rolled products), or two coils of adjacent springs (there may be another combination).

Uncleaning of rolled products 1 is as follows.

The drive 3 is switched on, under the action of which the pressure beam 4 moves up. In this case, the springs 9, 10 are retracted from the rolled metal 1, and some in the initial position are supported by the axis 8, which, in turn, is supported by the pressure beam 4.

The presence in the device design:

... - a fixing unit made in the form of at least two identical springs installed on the axis' when the coils of one are placed between the coils of the other, and. the axis is located on the pressure beam with the possibility of vertical movement, and the pressure beam itself is installed with the possibility of contact with the outer diameter of the springs, made it possible to use compression springs with low rigidity in the axial direction, each (springs with a large pitch) and, at the same time, create a rigid structure, the ability to take vertical loads and at the same time obtain a sufficient number of clamping elements (turns), which can freely move in the axial and vertical directions, providing a reliable fit to the rolled steel being clamped, which, in turn, made it possible to simplify the design of the device, increase the reliability of the clamping for by creating a flexible smooth system for clamping rolled products, assembled in a package and having geometric and dimensional deviations in diameter.

The use of the invention will allow:

- to increase the reliability of the clamping of rolled products, assembled in a package and having geometric and dimensional deviations in diameter, a. therefore, it will allow to increase the service life of the cutting tool in the machine tool, in the design of which the claimed device is used, up to 5%:

- to simplify the design, and, consequently, to reduce the labor intensity of its manufacture and cost.

The expected economic effect from the implementation of the proposed technical solution is 59,700 rubles. per year for one device.

Claims (1)

Claim A device for clamping rolled stock containing a frame carrying a drive for moving the pressure beam with a unit for fixing the position of the rolled stock, characterized in that. that, in order to increase the reliability of the clamp and simplify the structure, the fixing unit is made in the form of at least two identical springs installed on the axis, while the coils of one are placed between the coils of the other, and the axis is located on the pressure beam with the possibility of vertical movement, and the pressure beam is installed with the possibility of contact with the outer diameter of the springs. Fig. 3