SU496194A1 - Device for stamping blanks - Google Patents

Description

(54) STAMPING DEVICE

I

A device for stamping blanks by rolling, comprising a body mounted on a ball bearing, a tool holder with a ball surface, which interacts 5 with the ball surface of the body support and connected to a drive in the form of two conical screws that engage with a hypoid wheel, is known the outer surface of the hub which is located eccentric new sleeve.

However, the power and force parameters of the process of deforming the workpieces are limited by the maximum allowable forces and straining stresses, which must not exceed the dynamic strength of the parts and components of the rolling-in mechanism.

This is explained by the fact that the magnitude of the working moment of the round running of the tool is limited by a small shoulder in the known devices between the axis of the drive and the deaxial of the eccentric bushing planted on the carrier shank and the length of the carrier. In addition, constructive and technological performance 25

the carrier body of such devices is difficult, and it is impossible to use them in processes for which a tool with a through working channel is required (extrusion, drawing with thinning, crimping and drawing with coarse deformations).

To expand the technological capabilities of the device, the instrumental holder is made in the form of a glass, while the ball bearing of the body is placed in the bottom part of the glass, the drive is mounted on a cylindrical shank, which is provided with. The body is female, and the eccentric drive sleeve is located at the top of the glass. Glass, ball bearing and cylindrical shank may be located coaxially

.and they have a through hole with a diameter greater than the maximum diameter of the forged workpiece.

The drawing shows the design of the proposed device. It consists of a body in the form of a plate 1 with a cylindrical through shank 2, on which a hub 4 is mounted in bearings 3 with

1 the same hypoid wheel 5. The wheel is engaged with two hypoid screws B of the drive. The hub 4 is connected with an inserter holder 8 made in the form of a glass by means of an eccentric sleeve 7, and a spherical support 9 is concentrically mounted on the bottom of it, on which the sleeve 10 with a spherical face surface is described. A tool is attached to the tool holder 8, for example a punch 11. The tool holder

8 with a punch 11 and a spherical support

9 assembly presses against the support sleeve

10 flange cover 12 through the support ring 13. The tool holder, spheri-

The iron support and the support sleeve are made with a through hole, the size of which is determined by the maximum diameter of the workpiece machined in the tool with a through working channel. Such: the implementation allows replacing the punch with a certain type of die to implement such technological processes as extrusion, drawing with coarse deformations, crimping, stretching with thinning.

When the device is circular oscillating movement of the punch 11 is as follows. With the aid of a hydrotope gear of the worm, the hub 4 is driven into rotational motion. Further along the kinematic chain formed by the leading eccentric bushing 7 and the slave tool holder 8, due to the possibility of axial reciprocal mobility of these parts, the rotational motion of the drive is transformed into an oscillatory movement of the circular rolling of the working tool, i.e. the punch 11, the working surface of which is made in accordance with the angle U kachan, the specified value of the eccentricity of the sleeve 7. In contact of the tool 11 with the workpiece 14, | placed in the cavity of the stamp 15, a movable plastic wave of a local deformation zone, which has a torus distribution, is formed.

The proposed device allows to increase the power and process parameters by at least 2-3 times.

The design is easily integrated into the working space of the presses and tooling machines of pipe-wrap and crimping mills, has a low cost, is easy to maintain and operate.

Claims (2)

1. A device for stamping blanks by rolling in, comprising a housing mounted on a support, a tool holder with a spherical surface, cooperating with a spherical surface of the support of the housing and connected to a drive in the form of conical screws that engage with a hypoid wheel, on an outer The hub surface of which is an eccentric bushing, characterized in that, in order to expand the technological capabilities of the device, the Instrument Holder is made in the form of a glass, while and the hull support is located at the bottom of the glass, the drive is mounted on a cylindrical shank, which is equipped with Kopnycj. and the eccentric drive sleeve is located in the upper part of the glass. 2. The device according to claim 1, differs from the fact that the glass, ball bearing and cylindrical shank are aligned and in them is a through hole with a diameter greater than the maximum diameter of the workpiece to be stamped.