SU72609A1 - Hydraulic head for longitudinal machine - Google Patents

Description

A hydraulic head is provided for pulling flat guide surfaces.

FIG. Figures 1 and 2 depict a hydraulic head in two projections; in fig. 3 and 4 — drawing in two projections; in fig. 5 and 6 tons of ha in two projections.

The pulling is performed by pulling (Figs. 3 and 4), connected by pulls (Figs. 5 and 6) with the help of pins 5, which enter into the holes / and which can be uncoupled during the pulling. Each stretch consists of a base 6 and knives 7. Stages 2 and 5 per ton are used to apply pulling force. The operation of the proposed device is carried out in the following way: the fitting part is fixed at a small distance from the already processed (or from the jig — the standard). A draw is drawn into the gap formed, the pull of which is carried out by a hydraulic head.

To do this, two cylinders 17 are pressed into the body 22 of the hydraulic head (Figs. 1 and 2) mounted on the bracket, on the caliper or on the stand, along which the rods 16 are connected to each other.

with the other two rails and rack gear 15. Thus, when one rod makes a working stroke, the other moves in the opposite direction.

At the end of the stroke, the thrust pin 26 fixed on the rod presses the lever 28, which acts on the stop 29, which moves the slider 34 together with the gear 15. At the same time, the gear 15 with the rails disengages the rod, obtaining the freedom of movement from cylinder 21. Under pressure from this oil, the second rod begins its working stroke. The spring-loaded pawl 31 reinforced on it with its protrusion 38 falls into the slots 2 and 5 tons of g (flg. 6) and continues to be pulled. At this time, the thrust pin 13, also mounted on the rod 16, acts through the cam 14 on the disk 27. The spool 23, connected to the disk 27, switches the operation of the cylinders. When switching, the waste oil output is stopped. (The working of the second piston continues due to the oil coming from the cylinder 21 through the ball valve 36), and the working oil gradually passes

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from one cylinder to another. The stroke length of the rods is adjusted by moving the sleeve 35.

Subject matter

Claims (3)

1. Hydraulic golopka to the machine, consisting of two stationary parallel, alternately operating, automatically refutable common spool valves. This is such that, in order to use both cylinders, to carry out continuous pulling with one stretch in one direction, on the piston rods 16 Hydraulic cylinders are placed one after the other two consecutively acting thrust pins, one of which (pin 26) is intended to affect the pinion mechanism of the pinion gear 15 with both rods, while switching the stroke of one of the pistons to the reverse one, and other (finger / -) designed to affect the switching mechanism of the spool 23 controlling the operation of both cylinders. 2. The shape of the head according to claim 1, from which, in order to disengage the kinematic connection between the piston rods of both cylinders under the action of the thrust pin 26, the pinion gear 15 is placed on the slide that is movable in the direction of the piston stroke held stationary until the cylinder is switched, by means of a movable spring-loaded rod 29 interacting with the lever 28. 3. The shape of the head according to claim 1, characterized in that, in order to successively grip the stretching cylinders moving in the plane of symmetry of both cylinders, rotary spring-loaded pawls 31, which are located in oppositely inclined planes such that they take The protrusions 3S of both dogs 31 in their operating position are located in the plane of movement of the broach. FIG. one sixteen О Ч ® I about 7 V FIG. four FIG. five - - OF O 2z: s