SU1442427A1 - Ram drive of mechanical press - Google Patents

Abstract

The invention relates to forging machinery, in particular to the design of mechanical presses. The purpose of the invention is to increase the reliability and expansion of the technological capabilities of the press due to the intra-cycle regulation and control of the values of the technological effort, speed and stroke of the slide. The use of the auxiliary electric motor 10 allows, via the V-belt transmission 8 and the crank shaft 14 with the eccentric bushing 18, to change the position of both the connecting rod 1 and the slide 16 during adjustment (jogging) modes and during idle and working strokes. In this case, the press is driven from the main motor 9 through a differential gearbox and V-belt drive 7, as well as through a crank shaft 2 with an eccentric bushing 17. The presence of shafts 2 and 14 provides an increase in drive reliability when the press is jammed. 1 hp f-ly, 3 ill. (L

Description

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The invention relates to a press molding machine industry, in particular to the design of mechanical presses.

The purpose of the invention is to increase the reliability and expansion of the technological capabilities of the press due to the internal regulation and control of the magnitude of the technological effort, CK growth and the progress of the slide.

FIG. 1 shows a diagram of the drive, the overall appearance; FIG. 2 shows the details of the drive when the slider is in the upper position; FIG. 3 - the same, when the slider is located at the site of the working stroke and in its lower position (when the slider stops at a hard stop).

The drive contains a crank shaft 2 coupled with a coupling 3 and a brake 4, the flywheels 5 and 6 connected with a connecting rod 1, connected by V-belt drives 7 and 8 with the main 9 and auxiliary

and clutch 3 is off, while brakes A and 15 are on.

Next, the brake 15 and B1 are turned off; any1; 1 the auxiliary electric motor 10 is activated. By means of a counterbalance (not shown) and electric motor 10, the shaft 14 is set to a position providing the predetermined radius R. The electric motor turns off, the brake 15 turns on,

the gearbox is locked.

When the adjustment (jogging) mode is set, the stroke of the slide 16, the gearbox locked, the clutch 3 turned on, the brakes 4 and 15 turned off, periodically on and off of the electric motor 10 and brakes 4 and 15, press is set up, i.e. adjustment movement of the slide 16 is carried out.

When working on single moves of the slide, there is no force overload, and when the differential is blocked

10 electric motors, differential gear 25, brakes 4 and 15 are turned off,

A new gearbox with a blocking unit, input 11 of which is connected to the main motor 9, and outputs 12 and 13, respectively, to clinore 1: 1 gears 7 and 8. Electric motors 9 and 10 are connected to an electric system (not shown) of the press.

The drive contains an additional crank shaft 14 with a brake 15, a slider 16, eccentric bushings 17 and 18,

clutch 3 and electric motors 9 and 10 are turned on. After acceleration of flywheels 5 and 6 by a command, the single stroke reducer is unlocked and the required radius R is set by means of 30 UR equal to 1 hanger and electric motor 10, and after passing by a slider 16, the lower edge of its position is unlocked. Further

Sensors 19-22 control technological-35 electric motor 10 shaft 14 with Krivos sensors

force, speed and code of the slider 16 and the position of the additional crank shaft 14, as well as 6jjoK 23 controls, connection 19-22 and the electrical system with the auxiliary electric motor 10. The eccentric sleeves 17 and 18 are placed in the connecting rod 1 and connected to the cranks 24 and 25 shafts 2 and 14. The eccentric sleeves 17 and 18 can be made with an eccentricity equal to the radius of the cranks of the shafts 2 and 14.

The drive works as follows.

When adjusting the stroke of the slide 16 and setting it in the upper position, the starting position is the position of the cranks 24 and 25, in which they are located in antiphase of the girls to another at an angle between them equal to 180 (Fig. 2.), and the axis is upper the heads of the connecting rod 1 coincides with the axles of the shafts 2 and 14, while the differential gearbox is Released

clutch 3 and electric motors 9 and 10 are turned on. After acceleration of flywheels 5 and 6 by a single stroke, the reducer is unlocked and the required radius R is set at the idle section by UR equal to 1 hanger and electric motor 10, after passing the slide 16 to the lower end position unlocked. Further

motor 10 shaft 14 with a crooked

five

five

0

spike 24 is brought to the neutral position.

When overloaded, the order of operation of the drive is the same, however, at the same time, there is no blocking of the gearbox during idling. The force overload in the section of the working stroke causes an automatic decrease in the radius R (Fig. 3) by increasing the phase angle of the cranks 24 and 25.

The operation of the drive on continuous strokes is similar to the work on single strokes up to the lower extreme position of the slider. After which, shafts 2 and 14 are not brought to the neutral position.

The motor 10 is controlled via the control unit 23 from the sensors 19-22. The in-cycle adjustment of the stroke of the slide is performed by setting the vari- able value of the radius R in the idle sections of the press, Intracycle; ОФие .2

Claims (2)

Claim 1. Slider drive of a mechanical press, containing a crank shaft articulated with a connecting rod, two flywheels connected by gears to the corresponding gears of the differential gear mounted on the frame with a locking unit, the main rodwatel, the wiki press theme, as well as a clutch and brake that increase reliability and expand technological capabilities of the press due to in-cycle regulation! monitoring and control of the magnitude of the technological effort, speed and stroke of the slider, it is equipped with an additional crank shaft with a brake placed coaxially with the main crank shaft, two eccentric bushings, sensors for monitoring the technological force, the speed and stroke of the slider and the position of the additional crank shaft, as well as a block control associated with the said sensors and through an electrical system with an auxiliary electric motor, the eccentric bushings are placed in the connecting rod and articulated with the cranks mentioned shafts, while the input of the differential gearbox is connected to the main motor. 2. Drive pop. ^ characterized in that the eccentric bushings are made with an eccentricity equal to the radius of the crank shafts. and auxiliary electrical related electrical macho. About το Fie. 2 Fig.Z Compiled by V. Greenberg Editor A. Kozoriz Tehred A. Kravchuk Corrector 0. Kravtsova Order 6347/17 Circulation 546 Subscription VNIIIPI of the USSR State Committee for Inventions and Discoveries 113035, Moscow, Zh-35, Raushskaya nab., 4/5 Production and printing company, Uzhhorod, st. Project, 4