SU995985A1 - Die for drawing in simple-action press - Google Patents

Description

(5) STAMP FOR EXTRACT ON PRESS SIMPLE ACTION

one

The invention relates to the processing of metals by pressure and relates to die tooling.

A stretch stamp is known that includes a punch, a die, a pressing and a f13 spring buffer.

The disadvantage of this stamp is its high energy intensity, due to the fact that the compression of the buffer springs takes place during stretching, which is about 20% of the useful energy expended unproductively.

The closest to the invention is a simple-action die for drawing on a press, containing movable and fixed plates, a punch and a die fixed coaxially on them, as well as a clamp connected by means of pull and springs to the fixed 20 plate 2.

The disadvantage of this stamp is its high energy intensity. This

This is due to the fact that when the press crawls back) 4a after stopping the presser at the level of the upper end of the punch, the matrix must rise above the presser level at least the height of the manufactured part to remove it from the die. The spring is then compressed, where energy is expended.

The purpose of the invention is to reduce energy consumption by eliminating unproductive energy losses in compression of the pressure spring.

Claims (2)

This goal is achieved by the fact that in the die for stretching on the press a simple act containing movable and fixed plates, a punch and a matrix fixed coaxially on them, as well as a clamp connected by means of the pull and springs with a fixed plate, in the clamp are verticals These holes, rods are passed through these holes, the pressure springs are installed at the upper ends of the rims, and the stamp is provided with a hinged link to the rods and a hinged point in the center on the fixed plate with a double arm and pressure clamp assembly de eccentrics are pivotally mounted on the matrix and kinematically linked with a moving plate. The drawing shows a stamp, a general view, a longitudinal section (the final moment of stretching). The stamp contains a movable plate 1 with a punch 2 fixed on it, a fixed plate 3 on which the matrix k is fixed with a through groove 5 on the side of the non-working end and crown with mattes 6 and 7 axes, freely mounted on the clamp 8 matrix, in which vertical holes are made 9, mounted on the matrix k clamp 10, mounted on the clamp 8 puller 1t and lifting unit press. Through the holes 9 of the clamp B, the glands 12, are omitted. on the free ends of which springs 13 are put on, ti gi 12 are pivotally interconnected by a two-arm lever 1 placed in groove 5 of the matrix k, pivotally fixed at a midpoint on the fixed plate 3. The clamp lifting unit is made in the form of eccentrics 15 pivotally mounted on the axis x 7 brackets 6 of the matrix k and kinematically connected by means of grids 16 and 17 and hinges with a movable plate. In the case of hydromechanical drawing, the matrix C is made deaf, and its cavity is filled with liquid. The stamp works as follows. In the initial position, the eccentrics 15 raise the clamp 8 so that the workpiece (not shown) can be mounted on the matrix k up to the stop in the bracket 6. With the working stroke (down) of the movable plate 1 under the action of the pullers 16 and 17, the eccentrics 15 turn AND release the clamp 8, which presses the workpiece to the matrix k under the action of the springs 13. When moving down, the punch 2 produces drawing. Two shoulders lever 1 provides uniform clamping force. During the reverse course of the plate 1, the stamped part is removed from the punch 2 by the puller 11. The proposed stamp ensures a reduction in energy consumption, since it practically excludes the compression of the compression spring, which is tenths of a millimeter. Formula of the invention for a simple action extrusion die containing movable and fixed plates, a punch and a die fixed coaxially on them, as well as a clamp, connected by means of t and springs with a fixed plate, characterized in that, in order to reduce energy intensity, it is excluded and unproductive losses of energy for compression of the pressure spring, vertical pressure holes are made in the clamp, these holes are passed through these holes, pressure springs are installed on the upper ends of the pull rod, and pieces are equipped with hinges attached to the joints and hinged at the middle a point on a movable plate with a double-arm lever and a clamp lifting unit made in the form of eccentrics hinged on a matrix and kinematically connected with a movable plate. Sources of information taken into account during the examination 1. V.T. Mescherin. Sheet stamping. Atlas of schemes. M., Mechanical Engineering, 1975, p. 17, fig. 43. 2. Mescherin V.T. Sheet stamping. Atlas of schemes. M., Mechanical Engineering, .1975, p. 113, fig. 295 (prototype).