SU320364A1 - HYDRAULIC CLAMP 'i.'S-j ";, h.,;. * ,,. • -'- • -., BIB]; IO. ui-vA If-rff. ^^^ - ^ • rr'.r'l - Google Patents

Description

Hydraulic clamps with rotatable L-shaped tacks are known, in which turning the tack requires full use of the piston stroke of the driven cylinder, which causes an increase in the auxiliary time.

The described hydraulic clamp differs from the known ones in that its hydraulic actuator is made of two coaxially arranged hydroniliidros, and a sticking sleeve rigidly connected with the annular piston of one of the hydraulic cylinders is movably mounted on the other hydraulic cylinder.

With this design, the auxiliary time is reduced when clamping and unclamping.

The drawing schematically shows a hydraulic clamp, a section along the axis.

L-shaped tack /, made as one piece with the sleeve 2, is movably mounted on the rod 3, which has a spiral groove. The finger 4 enters the groove. The annular piston 5 is attached to the sleeve 2. The piston 6 is made HieiH under1H10 with the rod 3. The porsies are located in the cylinder 7. Two guide pins 9 are pressed into the blind cover 8, which protect HITOK 3 from turning. ,

with with SLN1YUM. In doing so, HopnieiHj 5 is driven into the hinge of the cylinder 7, and the piston 6 of the rod 3 sits on the pins 9. The grip is not moving and turns away from the part.

When the part is clamped, the oil is suspended in the cavity of the cylinder 7, and the cavities 10 and // are connected to the drain. Tacking under the action of the piston 6 with the rod 3 is rotated, and under the action of 5 clamps the part.

When the part is turned at a certain angle, the cavity 7 / is connected to the slider, and the second: the cavity of the cylinder 7 serves oil. The first cavity of the tsiliidr 7 can be connected to the drain, but it can be left under

pressure. As a result, the workers of the piston piston rod 3 will in any case move up to the stop in the cup 12, and, pressing the collar of the rod 3 to the end of the sleeve 2, will displace the clamp 1 by an amount sufficient to unclamp

the details. Since the stem 3 and the sticking / moving together, the turning of the sticking / s will occur.

When the part is shifted, for new clamping it, the oil is fed into the cavity 11, and the second cavity of the cylinder 7 is connected to the drain. Stock 3 lowers, releasing sticking /. Oil pressure and nepBoii, due to the specificity of cylinder 7, provide the clamping of the part.

Subject invention

A hydraulic clamp intended to fasten parts machined, for example, on stretching machines, in the case of which a rotatable L-shaped clamp is mounted, connected to a hydraulic actuator, characterized in that, in order to reduce

the auxiliary time when clamping and unclamping parts, the hydraulic actuator is made of two coaxially arranged hydraulic cylinders, and VT L1ka: P1IH1vaFa rigid1ko 10oed1I1nena with annular pistonN € m of one FROM Pi1Schrotsil.indrov and movably mounted on the rod of another hydraulic cylinder.