SU116746A1 - Stamp for radial shaping gear teeth and other similar parts. - Google Patents

Description

Punching with oblique and helical teeth, as well as with inner spiral grooves, is usually carried out in special punches of complex construction, and the process of deforma- tion, metal, with such punching is carried out by punches, the working surface of each of which corresponds to the cavity between the teeth. The movement of the deforming punches occurs in the horizontal PLANE under the influence of the central punch, reinforced in the press slide.

Such a stamping process is not very productive and leads to a significant marriage.

The proposed stamp is more productive. It consists of a single punch, a die, and a device for removing and removing the finished product from the matrix. When punching the inner hooking parts of the lower part of the punch, the same outer gear shape is formed, and during the pressing process, the punch presses the metal into the conical undercut.

When stamping the parts of the external engagement of the lower part; the pint of the puaison is made in the form of a cone, which forces the metal into the matrix, made in the form of the same internal engagement detail. In FIG. 1, a section along the longitudinal section is shown; a stamp for receiving parts with internal engagement; in FIG. 2 - with external engagement. To obtain an internal engagement part, cylindrical billet 1 (Fig. 1) is heated and placed in a matrix 2, having two cylindrical cavities connected by a conical cavity 3 with from 30 to 60 °. The lower part 4 of the punch 5 is shaped with an external oblique OR spiral tooth or with a slot, the dimensions of which correspond to the dimensions of the finishing part, taking into account the double laying of the metal and the allowance for final machining.

When the punch 5 moves down, its lower part freely enters into CAVITY 6, previously made in the workpiece. Under pressure

NO 116746

Poixon, the original billet is moved downward, post-entry into a conical cavity 3, where the outer diameter of the billet is reduced. At this moment, as a result of the radial flow of the metal, the cavities between the teeth of the lower part of the punch are freely filled.

At the last punching moment, the lower end of the billet reaches the 3-pore ring 7, in which a hole is made for an extra volume of the billet metal, and all the surfaces of the forging are fully formed.

For stamping the outer teeth and splines, the workpiece 8 (Fig. 2) imparts a volume corresponding to the final forging.

The firmware part of the punch 5, made in the form of a cone, moving down and entering the central channel 10 of the workpiece, causes the diameter of the bore to expand and the metal to flow into the hollows of the teeth 11 of the matrix 2.

Both in the first and in the second one, the pusher (not shown in the figures), pushing the forging upwards, simultaneously turns it.

Claims (2)

1. A radial forging gear teeth and other similar parts, consisting of a die, a punch and a fitting for removing from the punch or pushing the finished product out of the matrix, in order to increase the productivity of the stamp, the lower part of the punch when stamping parts internal engagement is made in the form of the same external engagement part for entering into the undercut of the workpiece and pushing it with a punch into the conical undercut of the die., 2.Video change stamp under item 1, characterized in that for shtampovki details external gearing the lower part of the punch B is made as a cone for entering into the recess of the workpiece and punching it with a punch in the matrix, made in the form of the same part of the internal gear.