SU366911A1 - HYDRAULIC PRESS SCREW MILK - Google Patents

Description

one

The invention relates to the field of forging equipment and can be used for precise layerless stamping by extrusion in a closed cavity of a detachable die.

From 1 known hyrael preyzh-screw hammer containing a frame with a table, on which is installed the lower half of the stamp with a pusher, drive cylinders, rigidly mounted on the frame, the rods of which are connected to the frame-slider, screw slider with a punch, interacting with a nut, rigidly connected with the flywheel installed in the frame on the bearings, and pump-accumulator drive.

In order to increase the accuracy of the strapless parts, achieve maximum metal utilization, increase die resistance and increase the efficiency of the pump-battery drive in the proposed hammer on the upper crossbar of the frame-slide a window is made in which the screw slider can be axially moved , wherein the frame-slider is provided with an average cross-bar, in which a central opening is made coaxially with the helical slider and for mounting the upper half of the stamp on the bottom The crosshead of the slider frame has an adjustable pusher acting on it.

the ejector of the lower half of the stamp during the course of the frame-slider up.

FIG. 1 shows the press press hammer described in section; in fig. 2 - frame-slider with a working tool in section; on

FIG. 3 is a section along A-A in FIG. one; on

FIG. 4 is a process flow diagram.

Hydraulic press screw hammer (see Fig. 1) contains a frame 1 with a table 2, in

The top of the upper part — which is equipped with a flywheel 4, equipped with a brake 5. In the central bore of the flywheel 4, a multiple-use nut 6 is rigidly fixed, through which the screw slider 7 passes. The last smooth upper shaft is installed in the cylindrical slide bearing S, and in the lower part of the screw the slider through the window to the upper crossbar is suspended frame slider 9, which through the cross member 10

rigidly connected to the rods 11 of the hydraulic cylinders 12 mounted on the bed /. In the lower frame cross-frame 9, an adjustable pusher 13 is fastened. Between the top and bottom cross-bars in the frame-slide (see

FIG. 2) there is a cross-member with a central hole for fastening the upper half of the stamp 14. The bottom half of the 15 punch with the ejector 16 is installed on the table 2. At the end of the screw slider 7 rigidly

punch is fastened 17. In the bed (see FIG. 3)

there are guides 18 for slider frame P, and in the latter - guides 19 for screw slider 7.

In addition, a pump-accumulator station and a control panel are provided (conventionally not shown in the drawings).

Hydraulic press screw hammer works as follows.

The cylinder billet, which is heated to forging tvm1Pvra rounds or cold, is placed in the cavity of the lower half of the tube (see Fig. 4a). On the control panel, the pushbutton is pressed, the electrical blocking is triggered, and the brake 5 releases the flywheel 4. Then the liquid under high pressure of gas from the gas-hydraulic accumulator enters the cavity B of the hydraulic cylinders 12. Since the rods // of the cylinders are rigidly connected to the head plate 10 , and the traverse, with the slider frame 9, the whole system, under the action of the energy of the gas-hydraulic accumulator, rushes down.

The screw slider 7, located in the upper window of the slider frame 9, along the guides 19, also moves downwards and spins the flywheel 4. Moreover, the upper smooth part of the screw slider has the exact direction in the cylindrical sliding support 8. When it meets with the workpiece it produces the pre-deformation - draft before closure with the lower half of the shaft 15, as a result of which the frame slider 9 is stopped and the pressing force of the hydraulic cylinders 12 keeps the chip in a closed state.

Due to the difference in the downward movement of the screw slider 7, after acceleration and spinning the flywheel, after stopping the frame-slider, it continues to move along the rails 19. PoinOOIH 17, w СТ ST1Ko z sowed with ®I | Ht, AH | Shtamp half 14 and in the closed cavity of the fixed split shtamp produces the final deformation of the workpiece (see Fig. 46).

The lift button is pressed on the remote control unit, the electrical interlock is triggered, the brake 5 is wedged by the flywheel 4, and the screw slider 7 with the punch 17 remains below.

The fluid from the oil pump enters the cavities B of the hydraulic cylinders 12, the frame slider rises, and the forging remains in the lower half of the shaft (see Fig. 4c). Upon further lift, the brake releases the flywheel, and the slider frame returns the screw to the upper position. In this case, the pusher 13, acting on the ejector 16, releases the cavity of the lower half of the valve (see Fig. 4d).

In this position, due to electrical blocking, the brake is jammed with the flywheel, oil from cavities B is drained into the tank, ramapolzun is lowered and hangs on the screw slider 7 (see Fig. 4a).

Thus, the frame-slider operates in the press mode, and the screw slider with the flywheel is sequentially in the hammer mode.

Subject invention

Hydraulic press-screw hammer containing a bed with a table, on which the lower half of the shtampa with the ejector is installed, drive hydraulic cylinders rigidly fixed. On the bed, the rods of which are connected to the frame-slider, the screw slider with the punch, interacting with the nut rigidly connected to the flywheel installed in the bed on the support, and pump-accumulator drive, characterized in that, in order to increase the accuracy of the layer-free shtampovki details, to achieve maximum metal utilization,

increase the durability of the chips and increase the efficiency of the pump-accumulator drive; a window is made on the upper crossbar of the frame-slide, in which the screw slide is axially displaced, while the ramp-slide is provided with a middle crossbar in which the central opening for the upper slide is aligned with the screw slide; half shtampa, and on the lower crossbar

frame-slider is an adjustable pusher acting on the ejector of the lower half of the stem with the frame ram up.

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