SU1207653A2 - Die for cutting rod billets - Google Patents

Description

2. A non.l stamp, characterized in that the wedges are provided with nodes for restricting their movement,

3. The stamp according to claims 1-2, about tl and the fact that each of the nodes for limiting the movement of wedges is made in the form of a hollow groove located on the surface of the wedge parallel to the direction of its movement,

The invention relates to the blank production of machine-building enterprises, can be used for cutting bar stock from long products on pressing equipment and is an improvement to a die for cutting bar stock into auto-wires. K 499060.

The aim of the invention is to increase productivity and reduce labor difficulty when replacing wedge die pads for cutting bar stock.

Figure 2 shows a stamp, a general view in the working position, and FIG. 2 - the same in the position of the Taj tool changer — A-A section on fng.1; FIG. 4 is a flow chart, wedges,

The rectangular cavity of the bottom plate 1 (Fig. 3) on the movable wedge x 2 is fitted with a cassette 3 with segment sliding supports 4 mounted on it (Figs. 1 and 3) and wedges 5 with wedges 5. which enter the wedge cavity of the pivoting levers 6 The inserts are spaced by springs 7.

The movable wedges 2 are rigidly connected by brackets 8 with strips 9 of a gear wheel 10 mounted on shaft 11, which is rotated by key 12. Limit of freedom of wedges 2 is provided by stops 13, rigidly fixed in the lower plane of the through groove of the lower plate 1, which, by means of directional columns 14, sleeves 15, springs 16 and tg 17, is connected to the upper plate 18, on which screws 19 in the recesses of the fixing of the stop mounted in the lower plate with the possibility of placing its protruding part in the groove of the wedge, 4. A POP.1 stamp, characterized in that the inclined surfaces of the wedges are arranged to mate with one another, with one of the wedges made with a protrusion, and the other with a groove for the protrusion.

The cheeks 20, between which axles 21 are installed, have pivotal levers 6, which are mutually adjusted by screws 22 and springs 23.

The length of the blanks is set by an anvil 24, the exit of the cut blanks is carried out along the chute 25.

The stamp works as follows. The bar is fed up to the stop 24, the press slide at the downward pressure on the upper plate 18 (not shown), the plate is lowered, and the liners 5 are clamped in the wedge cavity of the movable levers 6. With further lowering

the plates 18, the levers 6 tend to turn around the axis 21 and move the inserts 5 in opposite directions, but this is prevented by the rod, as a result of which it is clamped, the force

clamping the opposite of the angle between the side surface of the wedge cavity of the levers 6 and the strip-. The force extends until the horizontal projections of the forces acting on the bar equal the sum of the forces required to cut the workpiece. When cutting the workpiece

the levers 6 rotate around the axis 21, j and the insert 5 move in opposite directions, simultaneously turning the slide supports 4. The bar and the workpiece are clamped until the workpiece is completely separated.

After the end of the cut, when the slider npecQa returns to its original position, the levers 6 under the action of the spring 23 occupy the initial position, the contribution to

3

Breathing 5 by the action of the springs 7, the bar is released and fed to the stop 24.

The stamp is ready for the next cut.

By replacing the shaft 5 with the gear 10 with a key 12, clockwise rotation of the shaft 11 is driven by rails 9 rigidly connected by means of brackets 8 to movable wedges 2, which are moved in opposite directions to the stops 13, the cartridge 3 along their bevels under its own the weight moves down to the lower plane of the through groove, the inserts come out of the wedge cavity of the movable levers 6. After that, the first pair of inserts 5 is pushed to the sides with tweezers, springs 7 are removed, then shifted and alternately left to right by tweezers N- neem first half vkladshey 5, further in the same sequence

07653

take out the second half of the inserts 5. Installing the inset 5 Performs, in reverse order, by rotating the shaft 11 with the gear 5 som 10 with the key 12 counterclockwise

the arrows moving wedges 2 return to their original position, i.e. such when their planes form two continuous parallel planes,

10a, the cassette 3 moves upwards along their bevels and takes the initial position, sending the inserts 5 into the wedge cavity of the movable levers 6, and the punch is brought to the working position.

15 To ensure the safety of the service of the stamp during operation and tool change, it is equipped with a guard and limit switches introduced into the circuit of the engine of the press,

20, since in the open fence or in the tool change state, the press motor is turned off.

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ф.З

FIG. four

Compiled by V. Shebalkin Editor T. Parfenova Tehred A. Babinets

Order 125/13 Circulation 1000 Subscription VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch ItlUl Patent, Uzhgorod, Projecto St., 4

Proofreader A.T. sko

Claims (4)

1. THE STAMP FOR CUTTING OF BAR Billets by ed. No. 499060, characterized in that, in order to increase productivity and reduce the complexity when replacing wedge inserts, the bottom plate is made with a rectangular cavity located on the side of the wedge inserts, and a through groove located perpendicular to the axis of the levers, and equipped with a cassette with a support and persistent surfaces installed in the cavity of the lower plate with the possibility of reciprocating movements of a pair of wedges installed in the through groove on both sides of the cavity with the possibility of interaction with the cassette surface and multidirectional movement and interconnected by a rack and pinion gear, while the segment supports are mounted on the thrust surface of the cassette. 2. The stamp according to claim 1, characterized in that the wedges are equipped with nodes restricting their movement. 3. The stamp according to claims 1, 2, wherein each of the knots for restricting the movement of the wedges is made in the form of a blind groove located on the surface of the wedge parallel to the direction of its movement, and a stop mounted in the lower plate with the possibility of placing its protruding part in the groove of the wedge. 4. The stamp according to claim 1, characterized in that the inclined surfaces of the wedges are arranged to mate with one another, while one of the wedges is made with a protrusion, and the other with a groove under the protrusion,