SU1542687A1 - Screw press-hammer - Google Patents

Abstract

The invention relates to mechanical engineering, namely to the design of press hammers. The purpose of the invention is the expansion of technological capabilities. The screw press hammer contains a slider with a nut screwed with a screw connected through a hydraulic pulse mechanism to a driving hydraulic motor. The punch holder of the lower punch is rotatably mounted in the frame. The press hammer is equipped with an additional hydraulic pulse mechanism and a drive hydraulic motor. This allows for simultaneous rotation of both hydraulic motors to produce stamping with torsion. 5 il.

Description

The invention relates to mechanical engineering, namely to the design of press hammers.

The purpose of the invention is the expansion of technological capabilities by providing stamping with torsion.

FIG. 1 shows the design of the press hammer, a general view; in fig. 2 — node I in FIG. one; in fig. 3 shows section A-A in FIG. 2; in fig. 4 shows a section BB in FIG. 2; th FIG. 5 illustrates the dependence of the rotational speed of the hydraulic motor over time.

The screw press hammer contains slider 2 mounted in bed 1 rails with a nut 3 screwed with screw 4 connected through a hydropulse mechanism 5 to a driving hydraulic motor 6. Hydraulic cylinders 7 are mounted in bed 1 to lift the ram 2. At the bottom of the bed 1 on bearing unit 8 is mounted for rotation of the die holder 9 of the lower die, connected through an additional

hydro-pulse mechanism 10 with an additional drive hydraulic motor 11.

The impulse mechanisms 5 and 11 are made in a similar way and contain a flywheel 12, a holder 13 connected to a screw 4 (or to a press holder 9). In the radial holes 14 of the flywheel 12 pistons 15 are placed. In the central hole of the flywheel 12, a pusher 16 is mounted, connected through a thrust bearing 17 to the rod of the hydraulic switching cylinder 18 and through the levers 19 to the pistons 15. At the end of the pusher 16 synchronizing lugs 20 are made. the inner surface of the yoke 13 is made grooves 21 connected to the cavity 22 through the holes 23 and the protrusions 24. In the yoke 13 mounted spring-loaded plates 25, oriented relative to the protrusions 24 and interacting with their ends with the protrusions pamy 20 pusher 16

The hydraulic actuator contains a drain tank 26, a pump 27 connected to a pressure mast U

O5 00

Pour through the check valve 28 with the battery 29 and the inlet of the hydraulic engine 6. The inlet of the hydraulic engine 11 is connected to the cavity of the cylinder 18 of the hydro-pulse mechanism 10 and the cavity of the cylinders 7. The output of the hydraulic engine 5 l 11 is connected through an additional non-return valve 30 to its inlet and drain tank 26.

Screw press hammer works as follows.

into the cavity of the cylinders 7, as a result of which the slider 2 is lowered.

The rotation of the press holder 9 is carried out in a similar manner from the hydraulic engine 11 through the hydraulic pulse mechanism 10.

After the flywheels in the hydro-pulse mechanisms are stopped, the centrifugal forces stop, the pressure in the pressure line increases and the pistons 15 return to the fly-wheel mechanism 12 of the hydro-pulse mechanism 1 ° to the initial position by the hydro-cylinders 18.

Simultaneously with the beginning of the start-up cycle of the flywheel of the hydropulse mechanisms 5 and 10, the return position is carried out through the plunger 16 of the piston 15, 5 and the slide of the slider 2 is accelerated by the hydraulic fluid 6 by supplying the working fluid 5. position and holds in recessed

the bones into the cylinders 7. During the return stroke, the yoke 13 is separated from the flywheel 12 and rotates in the direction opposite to the rotation of the flywheel.

seeking to exit the radial holes 14 of the flywheel 12 inside the yoke 13. The battery 29 is charged. At the end of the charging of the battery 29. The flywheel is further accelerated to the speed UJ max due to the energy stored in the battery 29 when it is charged .

At the end of the charge-discharge cycle, the pressure in the pressure line drops sharply. The pistons 15 emerge into the internal cavity of the casing 13 under the action of centrifugal forces, displacing the fluid through the grooves 21 and the holes 23 from the cavity 22 of the hydro-pulse mechanism 5.

However, the radial movement of the pistons 15 is possible only in a strictly defined position of the pistons 15 and protrusions

24, when the pistons 15 pass in front of the protrusions 24. This is achieved by the fact that, prior to the exit of the pistons 15, the synchronizing protrusions 20 of the pusher 16 enter the space between the spring-loaded plates

25, they are moved apart and provide axial movement of the pusher 16 and radial movement of the pistons 15 pivotally connected to it.

Upon further rotation of the flywheel 4o 12 after the contacting of the ends of the pistons 15 with the inner surface of the casing 13, the latter reach the areas where the grooves 21 terminate. Overlapping the grooves 21 of the pistons 15 causes a dynamic seal

A helical hammer press containing a slider mounted in a bed frame with a nut screwed with a screw connected to a driven hydraulic motor via a hydraulic pulse mechanism with a hydraulic cylinder for switching it, hydraulic cylinders for raising the slider, as well as a die holder for the lower part of the die and a hydraulic actuator that includes a pump , accumulator, drain tank and check valves, characterized in that, in order to expand technological capabilities 35 by providing stamping with torsion, it is provided with additional driven hydraulic motor, non-return valve and hydraulic pulse mechanism with a hydraulic cylinder for switching it; when the die holder of the lower part of the punch is rotatably mounted in the frame and connected to an additional hydraulic motor through an additional hydraulic pulse mechanism, the output of the additional hydraulic motor is connected to

the liquid medium in the formed 45 drain tank and through additional observed volumes, which leads to the impulse transfer of energy accumulated by the flywheel 12 to the yoke 13 with screw 4, and then through the nut 3 to the slider 2.

Simultaneously with the pressure drop into the rotary valve, with its inlet, and the cavity of the hydraulic cylinders for raising the slider is connected to the inlet of the additional hydraulic motor and with the cavity of the hydraulic cylinder for switching the additional cylinder 18 also decreases the pressure of the hydroimpulse mechanism.

into the cavity of the cylinders 7, as a result of which the slider 2 is lowered.

The rotation of the press holder 9 is carried out in a similar manner from the hydraulic engine 11 through the hydraulic pulse mechanism 10.

After the flywheels in the hydropulse mechanisms are stopped, the centrifugal forces stop, the pressure in the pressure line increases and the pistons 15 return to their original positions. Hydro cylinder At the same time, a new flywheel of the hydropulse mechanisms 5 and 10 starts the return stroke of the slide 2 by supplying the working fluid

the bones into the cylinders 7. During the return stroke, the yoke 13 is separated from the flywheel 12 and rotates in the direction opposite to the rotation of the flywheel.

The economic effect of the implementation is achieved by expanding technological capabilities.

Claims (1)

Invention Formula 0 about A helical hammer press containing a slider mounted in a bed frame with a nut screwed with a screw connected to a driven hydraulic motor via a hydraulic pulse mechanism with a hydraulic cylinder for switching it, hydraulic cylinders for raising the slider, as well as a die holder for the lower part of the die and a hydraulic actuator that includes a pump , accumulator, drain tank and check valves, characterized in that, in order to expand technological capabilities 5 by providing stamping with torsion, it is provided with additional E drive hydraulic motor, a reverse-pulse valve mechanism and a hydraulic cylinder for shifting it, at the bottom of the punch die holder mounted in the frame and rotatably connected to the additional hydraulic motor driving through an additional hydraulic pulse mechanism, an additional output coupled to the hydraulic motor The valve is inlet with its inlet, and the cavity of the hydraulic cylinders for raising the slide is connected to the inlet of an additional hydraulic motor and to the cavity of the hydraulic cylinder for switching the additional hydroimpulse mechanism. 7 1 Iq J SN H -H No. /, S / / / X / / / U / S U / / / S / / (-00 to N f Yu -A A - u Iq J -H , /, 25 SchigM p a) fi.5