SU1602669A1 - Arrangement for clamping parts - Google Patents

Abstract

The invention relates to the processing of materials by cutting, in particular, to devices for securing parts to machine tools. The invention makes it possible to increase the reliability of fixing parts during a long processing cycle. In the case 6 is set clamp 4, interacting with the rod 2 of the hydraulic cylinder. The housing 6 also houses a spool 23 with a rail, communicated by channels with the cavities of the hydraulic cylinder, a main piston 10 and an additional piston 11 forming a working cavity 14 with the main piston, which communicates with the supply channels of the housing. On tack 1, a packet of cup springs 7 is placed, which is in contact, on the one hand, with an adjusting nut 9, installed on trademark 3, and, on the other hand, with the bottom of a spring-loaded cup. When clamping the part 33, fluid is previously supplied under pressure through the channels 16 into the cavity 14 of the hydraulic cylinder. The pistons 11 and 10 are lifted by squeezing the packet of cup springs 7 and turning the valve 33 onto the part 33 by means of a slide valve 23 with the rack. After removing the pressure, the pack of the cup springs 7 fixes the piece 33. 6 Il.

Description

com 2 hydraulic cylinders. The housing 6 also houses a spool 23 with a rail connected by channels with hydraulic cavities, a main piston 10 and an additional piston L1, a working cavity 14 which forms with the main piston . On the tack 1 is placed a package of disc springs 7, which is in contact on one side with an adjusting nut 9 installed

on t ge 3, and on the other hand - with the bottom of a spring-loaded glass. When clamping the part 33, fluid is preliminarily supplied under pressure through the channels 16 into the cavity 14 of the hydraulic cylinder. The pistons 11 and 10 are lifted by squeezing the package of the disc springs 7 and turning by means of the slide valve 23 with the rail holding the part 33. After the pressure is removed, the package of the plate springs 7 fixes the part 33 '6 ip.

The invention relates to the processing of materials by cutting, in particular, to devices for securing parts to machine tools.

The purpose of the invention is to increase the reliability of parts fastening during a long cycle of their processing.

Figure 1 shows the clamping device, a vertical section; figure 2 - section aa in figure 1; on - figs. 3 is a section BB in FIG. one ; in fig. 4, section B-B in FIG. 2; Fig. 5 is a cross section, with the sticking position in the given state; Fig. 6 is a cross-section BB, at the moment of sticking.

The device for clamping parts comprises an L-shaped clamp 1, through which a hollow rod 2 is passed through a pull 3 with a head 4, closed on the rod 2 through a spacer 5 The rod 2 is mounted so that it can move in the cylinder 6 housing. Tug 3 is equipped with a package of cup springs 7, locked between the glass assembly - washer 8 and adjusting nut 9, while washer 8 rests with the end on the casing 6. In the latter there are two floating pistons - the main 10 and 11 s the formation between them of the working cavity 42, with the piston. 10 is in contact with the pull 3, and the piston 11 forms a working cavity 14 with the housing cover 13. The cavities 12, 14 are connected by additional I5 and main channels 16 with corresponding supply lines 17 and 18.

Between the washer 8 and the groove of the rod 2, a prullsina 19 is put on the ton 3 of the tire, which is intended to keep the rod 2 in a suspended state.

To limit the movement of the rod 2, a washer 20 is mounted on it.

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The rod 2 is made with gear 21, interacting with the rail 22, is made on the spool 23, placed in the housing 6 with the formation of cavities

24 and 25, locked with 26 and 27 cavities. The cavities 24 and 25 of the spool are communicated respectively through channels 28-32 with cavities 12, 14 of the cylinder. Position

33 labeled workpiece.

The device works as follows.

In the working position, the pressure in the hydraulic cylinder is removed, the rod 2 is in the lower position, the clamp 1 clamps the part 33, the pistons 10 and 11 are in the lower position.

During the spinning of the workpiece 33, the working fluid under pressure through the additional channel 15 is fed into the cavity 12 of the hydraulic cylinder. Under its action, the dam 10 rises up, acting on th 3, pushing it up. At the same time, the disk spring unit 7 is compressed through the nut 9, and the head 4 of the gi 3 pushes up the tack 1 with the rod 2. The rod 2 with the tack 1 rises to a height h. When the piston stroke L upwards, the channel 29 opens, connecting the cavity of the hydraulic cylinder 12 through the channels 30, the valve cavity

25 and the spool 23 are moved to the left by turning the stem 2 with the clamping 1 to 90 (from part 33), then the pressure can be relieved. Under the action of the disc spring unit 7, the piston 10, the rod 2 with the clamping arm 1 are lowered downwards.

When clamping the workpiece 33, the working fluid under pressure is fed through the channels 1b to the cavity 14 of the hydraulic cylinder. Under its action, the piston 11 rises up, acting on the piston 0 and the CONDITION 3, pushing them up. Wherein

51602669

the disc spring unit 7 is compressed and raises up the rod 2 with the sticking

P

1. This opens channel 29, which connects through channel 28 of cavity 4, 25 of the hydraulic cylinder and spool 23. Spool 23 moves to the right by turning the stem 2 by 90 (per part 33 The pressure is released, under the action of the disc spring unit 7 the rod 2 with clamping and pistons 10 and 11 are lowered down, part 33 is clamped.

Claims (1)

Invention Formula A device for clamping parts comprising an L-shaped tack placed on a rod of a hydraulic cylinder made with a rod and rodless cavity connected by means of channels of the body of a hydraulic cylinder with end cavities placed in a korphag. 2 the spool, the rail of which is connected to the sticking gear, differs so that, in order to increase the reliability of fixing parts during a long cycle of their treatment, the device is equipped with a cup with a cup, an adjusting nut and a package of springs mounted on it; of the rod end of the cylinder cylinder cylinder by an additional piston forming a cavity with the main piston connected to the body channels by means of additional channels made therein, while the pistons are filled with floating and the glass is a sub-spring nennym relative rod, and a package of disk springs mounted to the method the adjusting nut and the outer surface of the cup bottom and the rod is set in stock with the possibility of mutually 1modeystvi with the main piston. Jlb / Zif 28 /four F1 / g. 5 25 Have