SU1276520A1 - Screw press for stamping with pulsating load - Google Patents

Description

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////////// // //// y /// f / 7 The invention relates to forging and pressing machine-building, in particular, to the design of screw presses. The purpose of the invention is to increase reliability and expand technological capabilities by increasing the range of value adjustment between the die space. FIG. 1 shows a press, a general view; in fig. 2 - the same, with an additional slider and its drive. A screw press for stamping products with a pulsating load is arranged as follows. The fixed part 1 of the stamp is installed in the bed 2. The mobile part 3 of the stamp is fixed on the slider 4, making a movement in the bearings - sliding bearings 5 mounted in the bed 2, the Slider 4 is connected to the screw 6 pivotally. This makes it possible to eliminate the rotation of the slide 4 when the screw makes 6 rotational movements (with the adjusting movement of the slide 4). The screw 6 interacts with the nut 7 on the outer surface of the nut 7 performs the splines, by means of which it is connected with the counter splines on the connecting rod lever 8, connected with the spur 9 of the gear reducer 11, the flywheel 12 and engine 13, Elements 9-10-11-12 in the aggregate represent a rotary-rocker drive of the sliders, which converts the rotational movement of the engine 13 into oscillatory oscillatory movements of the lever-scenes 8, coBepmaeivcbie last (its hub) in bearings 14, which neous limit its axial movement nekorotoy value needed in the event of the force rtepegruzki forging. For this case, a safety device is provided, made in the form of a power safety cylinder 15 mounted on the screw 6 (concentric with it), the ring plunger 16 of which, through the bearing 17, rests on the shoulder 1.8 of the nut 7. At the opposite end of the slider 4 of the screw 6 there are splines, whereby the screw 6 through the front face hub 19 is connected: to the die-space adjustment mechanism, which includes a worm wheel 20 in the syb, which interacts with the worm shaft 21, connected to the motor 22. The hub 19 of the worm gear 20 rotates the outer surface in the bearings 23 A screw press, as an embodiment, can have separable dies located in two mutually perpendicular planes (vertical and horizon flax), and two of each of the described drives and mechanisms. This raises the technological capabilities of the press - it allows to obtain products of more diverse sizes and shapes. Horizontally oriented drives and mechanisms are arranged similarly vertical. The bandage press works in the following way. The initial position of the slider 4 upper (Fig. 1). The engine 13 is turned on and through the gearbox 11 communicates the rotation of the crank shaft 10 with the flywheel 12. The rotational movement of the crank shaft 10 through the spike of this shaft, the rocker stone 9 and the lever-backstage 8 is converted into oscillatory oscillatory motion of the latter, and through a splined connection this movement is communicated to the nut 7 which, when interacting with screw 6, imparts a reciprocating vertical movement to screw 6 with the slider 4, not laying it out, part 3 of the stamp. The screw 6 is kept from rotation with its splined end and the hub 19 of the worm gear 20 when making working strokes. The workpiece is mounted on the fixed part of the stamp 1. After this, the hydromotor 22 is turned on. Rotating by means of the worm shaft 21 and the worm gear 20, the hub 19, the hydromotor 22 communicates the rotational movement to the screw 6. The latter, by interacting with the nut 7, is lowered down along with the slide 4, simultaneously rotating. In this way, the adjustment movement of the slide 4 takes place with a change in the height of the stitch distance. The magnitude of this movement can be any, it practically depends only on the size of the splined part of the screw 6. When adjusting the rotational and translational movement of the screw 6

with the slider 4, the rotation of the latter is eliminated by placing it in the sliding bearings 5 and swiveling with the screw 6.

The adjustment movement of the slide 4 can be performed simultaneously with its pulsating movements from or away from the main power flywheel actuator of the actuator 1311-12-10-9-8. In this case, the force (deforming) action of the part 3 of the stamp on the workpiece is performed by a flywheel drive 10-11-12-13, and the movement of part 3 of the stamp from the drive 22-21-20 to the stamping depth is carried out at idle part of the stamp.

At the end of the formation of the product, the motor 22 is reversed and the screw 6 together with the slider 4 and the movable part 3 of the die is retracted upward to its original position.

Press with two actuators and mechanisms (Fig. 2) works in a similar way. In this case, the dies can act on the workpiece at the same time or in a different sequence, which is determined by a specific process.

The control of the motor (or two motors) 22, depending on or independently of the operation of the power drive, is carried out from the control device or some other control device (not shown).

During the action of the punch part 3 on the workpiece, the forging force from the punch part 3 is transmitted to the slider 4, screw 6 and then through the nut 7 and the bearing 17 to the plunger 16 of the safety (overload) cylinder 15. When the forging force is exceeded, the nut 7 is able to move in the axial direction, by a certain amount, determined by the magnitude of the plunger 16 compliance, it presses its shoulder 18 against the latter, as a result of which the working fluid from the safety cylinder 15 is discharged to the drain by a safety valve (until en) tuned to the appropriate pressure. At the same time, a signal is issued to reverse the motor 22 After the elimination of the overload causes, the work can be continued without

any additional adjustment or adjustment.

Technical and economic advantages of the invention are provided by

compared with the base object by expanding the functional (technological) capabilities of the machine while reducing energy costs for processing. This is achieved by the fact that the design of a screw press allows for small deforming strokes of the working member, produced with great frequency, i.e. pulsating work movements, and adjusting the movement of the working member in a large range of magnitudes. On the press, technological processes can be performed, relating to hot and cold

Claims (1)

die forging, carried out on KPSS, GKM, friction presses, hammers and other forging and pressing equipment. The dismounting of the safety cylinder so that its annular plunger interacts with the nut installed with the possibility of axial movement, ensures the accuracy and stability of the forming force, improves the reliability of the machine, accuracy and quality of processing. The invention of the screw press dp punching with a pulsating load, containing a slider placed in the bed guides, a screw pair with a screw attached to the slider, a nut with a slider-and-crank drive of the slider, a mechanism for adjusting the stamping space in the form of a worm gear, and a worm wheel articulated with a screw, as well as a safety power cylinder, characterized in that, in order to increase reliability and expand technological capabilities by increasing the range of control of the magnitude stamping space, coupling of a nut with a crank-rocker drive of a slider and a screw with a worm gear is splined, the movable element of the power cylinder is hollow, the screw is passed through the latter, while the nut is mounted with the possibility of reciprocating movement and interaction with the movable element of the power cylinder .  / // // // 7 //// 77 //////// 7 / y ///// yiiinlL I five R ig.2