The adjustment mechanism closed height mechanical press
The invention relates to a press-forging equipment, in particular to designs of mechanical presses. The adjustment mechanism of the closed height of the mechanical press includes mounted in the slide parallel to the direction of its movement and is associated with a small connecting rod eye of the stepped plunger and the locking mechanism made in the form of thin-walled sleeve that is installed in the groove of the slide and forming with it the associated with the drainage system of the ring cavity. A stepped plunger is spring-loaded relative to the slider and forms associated with the drainage system of the ring cavity. The mechanism provided covering the plunger blocks in the form of an annular cylindrical sectors covered by the thin-walled sleeve and installed in the groove of the slide with the possibility of radial movement. The result is increased reliability of the adjustment mechanism closed height. 1 Il.The invention relates to a press-forging equipment, in particular, to the design of mechanical presses.Known adjustment mechanism closed height crank press, containing situated in the slide and spring-loaded with respect to it in the axial direction with the DRA and adjusting mechanism and the locking mechanism made in the form prescribed in the groove of the slide with the formation of the annular cavity thin-walled sleeve covering the plunger .A disadvantage of the known technical solution is that the locking mechanism has a low reliability as process load is transferred from the RAM to the connecting rod through the thin-walled sleeve.The invention is aimed at increasing the reliability of the adjustment mechanism of the closed height of the mechanical press.This is achieved by the fact that it contains mounted in the slide parallel to the direction of its movement and is associated with a small head rod stepped plunger, spring-loaded relative to the slider and forming with it the associated with the drainage system of the ring cavity, and the locking mechanism is made as a thin-walled bushing mounted in the groove of the slide and forming with it the associated with the drainage system of the ring cavity, and is further provided with covering the plunger blocks in the form of an annular cylindrical sectors covered by the thin-walled sleeve and installed in the groove of the slide with the possibility of radial movement.The drawing shows a frontal section of the adjustment mechanism of the closed height of the upper is set in the slide 1 and connected with a small head of a rod plunger 2, spring-loaded relative to the slider in the axial direction by the spring 3. The plunger is made stepwise and forms with the glass 4 of the RAM associated with the drainage system of the ring cavity And the adjustment mechanism. The locking mechanism made in the form of thin-walled sleeve 5, covering the plunger through the pads 6, having the form of a circular cylindrical sectors. Pads and thin-wall sleeve is installed in the groove formed by the glass and slide, with the possibility of radial movement, whereby the sleeve and the Cup form associated with the drainage system of the ring cavity B of the locking mechanism.Adjusting the closed height is performed when the discharge pressure in the cavity B of the locking mechanism and the flow of the liquid in the cavity And adjusting mechanism under the action of which the plunger 2 is moved relative to the slider 1, compressing the spring 3, and upon release of pressure in the cavity And relative movement and displacement of the liquid occurs under the action of the spring. The value of the closed height of the installed instrumentation devices (not shown) that includes a locking mechanism.Fixing the position of the RAM relative to the connecting rod is made by applying high-pressure fluid in cavity B. In this concolic 2. Technological force is transferred from the press slide pads through the plunger and then the rod.Sources of information1. Adjusting the closed height of the die space of the crank press: Proposal 63144899 Japan, MKI430 In 15/06, 21 D 37/14 Abstract journal /14.-Mechanical engineering/ 14V Technology and equipment forging and stamping production, No. 12, 1989, page 45.
ClaimsThe adjustment mechanism closed height mechanical presses, containing mounted in the slide parallel to the direction of its movement and associated small cylinder rod stepped plunger, spring-loaded relative to the slider and forming with it the associated with the drainage system of the ring cavity, and a locking mechanism made in the form of thin-walled bushing mounted in the groove of the slide and forming with it the associated with the drainage system of the ring cavity, characterized in that it is provided with covering the plunger blocks in the form of an annular cylindrical sectors covered by the thin-walled sleeve and installed in the groove of the slide with the possibility of radial movement.
FIELD: machining by pressure.
SUBSTANCE: the invention is dealt with the field of machining by pressure and may be used in presses for pressing powder-shaped masses, in particular, the metal powder-shaped masses. The press contains at least one connecting rod, a crankshaft and a connected with it and capable to rotate gear with an eccentric crankshaft drive for driving the unit of the upper plunger. The gear is set in rotation at least by one engine using at least one worm gearing. The press is equipped with electronic control, which is supplied with a function of a reversing mode of operation of the crankshaft. At the press operation a run of the unit of the upper plunger is reversed shortly before reaching of the upper and-or the lower dead point of the eccentric crankshaft drive. The second alternative of operation of the press offers to regulate a run of the unit of the upper plunger so, that the lower dead point of the eccentric crankshaft drive is passing a short way. In result the invention ensures an increase of accuracy of produced pressed items and an over-all performance, and also an increase of the performance index of efficiency of the press operation and expansion of its operational capabilities.
EFFECT: the invention ensures increased accuracy of produced pressed items, over-all performance, increased performance index of the press operation efficiency and expansion of its operational capabilities.
15 cl, 2 dwg
FIELD: heavy engineering industry; production of the drives of the mechanical presses.
SUBSTANCE: the invention is pertaining to the field of heavy engineering industry, to forging, in particular, to production of the drive of the mechanical press and may be used at designing of the drive of the presses with the design drawing providing for usage of the collapsible connecting rod. The drive contains the main and additional electrical engines, the reduction gear of the main shaft and the reduction gear of the additional shaft. The reduction gear of the additional shaft is made in the form of the self-stopping reduction gear with the coaxial input and output shafts. The input shaft of the self-stopping reduction gear is connected to the rotor of the additional electrical engine, which stator is mounted on the additional base. The technical result of the invention is simplification the mechanical press design.
EFFECT: the invention ensures simplification the mechanical press design.
FIELD: technological processes; engines and pumps.
SUBSTANCE: two eccentric shafts are mounted on press frame on both sides in respect of slab course and parallel to it. The shafts are connected to a drive and linked by connecting rod to two slides positioned in frame guides. Two tables with strikers are mounted on slides by four screws of press height adjustment mechanism. Adjustment mechanism features closed height adjustment drive with transmission shaft. The screws are connected in pairs by cogwheels fixed at them. Helical curves of adjoining screws have different direction. Two opposite screws of opposite slides are connected by moving spline joint to the transmission shaft of closed height adjustment drive.
EFFECT: increased precision of process.
FIELD: electrical engineering.
SUBSTANCE: invention relates to press forming equipment. Proposed machine comprises extrusion ram, servomotor, drive power supply and capacitor. The latter is connected in between power supply positive and negative channels. Said channels connect power supply and motor drive control section. Servomotor starts running on the basis of data on extrusion ram motion on feeding electric power for forming purposes. Machine can define if drive power supply voltage between aforesaid positive and negative channels is lower than servomotor induced voltage. If it is, data related with machine speed are corrected on the basis of data on extrusion ram motion.
EFFECT: stable operation.
18 cl, 7 dwg
FIELD: process engineering.
SUBSTANCE: invention relates to metal forming and can be used in presses for adjusting load acting on press pad. Pad is arranged under the press slider. Proposed device comprises hydraulic cylinder that makes proposed press pad, hydraulic control valve communicated therewith, hydraulic source, unit to control degree of opening, unit to determine pad lowering rate and unit to correct signal. Said hydraulic source communicates via hydraulic control valve with aforesaid cylinder. Unit to control degree of opening generates signal to regulate degree of opening of aforesaid hydraulic control valve proceeding from preset pressure in hydraulic cylinder. Unit to correct signal corrects control signal in compliance with preset pressure in hydraulic cylinder and press pad lowering rate.
EFFECT: automatic control over load on pad.
5 cl, 5 dwg
FIELD: process engineering.
SUBSTANCE: invention relates to machine building and can be used in designs of crank presses intended for separation jobs. Proposed press comprises foundation with cylinder with piston rigidly secured therewith. Said piston is licked via rod with slider of actuator consisting of crank and rod. Besides proposed press comprises compressor and internal air lines incorporating gates, check valves, inlet and adjustable outlet valves to communicate cylinder chamber with the compressor, outer air lines and atmosphere. Note here that pressure is generated inside said cylinder to act on slider with constant force when it moved from the start of plastic deformation beginning to its extreme position. Besides force acting on the slider can be decreased to zero when it moves from its extreme operating position to extreme initial position.
EFFECT: higher reliability and longer life.
FIELD: machine building.
SUBSTANCE: press consists of servo-motor, of slider, of holder for securing upper part of punch to slider, of mechanism for power transfer and of block of control of at least servo-motor and holder. The control block facilitates transfer of the slider into a position, when an upper part of the punch sits on the lower part of the punch, the upper part of the punch disconnects from the slider and the slider travels upward into standard position. Also, the slider does not reach an upper dead point. Further, upper and lower parts of the punch are extracted from the press and parts of another punch are installed. The slider is lowered into a position, when the upper part of another punch is attached to it; the said upper part is fastened and the slider is hoisted into the position when punching commences.
EFFECT: reduced time for punch replacement.
8 cl, 8 dwg
FIELD: manufacturing process.
SUBSTANCE: invention relates to systems of crank presses, forming a line of pressing. Angle of rotation control unit of main shaft of crank gear of the press comprises a unit of output of the reference value of the angle of rotation and unit of measurement of the angle provided for each press, the unit issuing the command of speed and the actuation unit. Unit issuing the command displays the value of the command speed to the electric motor of the corresponding press taking into account the reference and the measured values of the angle of rotation of the main shaft. The actuation unit controls the speed of the electric motor of the respective press. The unit provides the unit of correction. The said unit adjusts the value of command speed or the reference value of the angle of rotation. Adjustment is made so that the difference between the reference value and the angle of rotation of the main shaft for each of the presses is within the predetermined range.
EFFECT: improved accuracy is provided by controlling the angle of rotation of the main shaft of the crank gear of the press and prevention of impact on one press of changes of press-load in the other press.
7 cl, 7 dwg
FIELD: machine building.
SUBSTANCE: drive of the press slide includes motors, main crank shaft with a flywheel, which is hinged to the piston rod, and additional crank shaft with additional piston rod. Articulated connecting rod is connected to piston rod of the main crank shaft. Additional shaft is equipped with a release clutch and a flywheel. In the hinge between the piston rod of the main crank shaft and additional piston rod there installed is mutual position sensor of the above piston rods, which is connected to control system by means of a drive.
EFFECT: increasing the resistance to impact of disturbance induced with a gap in the hinge between piston rod of the main crank shaft and additional piston rod and elasticity of the above piston rods.
FIELD: machine building.
SUBSTANCE: press contains bedplate, in its guides a slider with nut is installed. The nut creates a helical non-locking pair with screw, at its free end a work flywheel is secured. In press the accumulating flywheel is provided, it is connected by belt gear with the work motor. The work flywheel is connected with additional motor. The motor creates an electric circuit with generator, connected with the accumulating flywheel. The generator is controlled by means of the control box, it also ensures reverse of the additional motor.
EFFECT: reduced installed power and increased efficiency factor of the press, simplified design.
3 cl, 1 dwg