RU2569627C1 - Unit for electromechanic reinforcement of sleeve openings - Google Patents

Abstract

FIELD: electricity.

SUBSTANCE: unit comprises a supporting frame, sweep drive, lifting mechanism, pins, tool for electromechanic reinforcement of sleeve openings, latching device and joint coupling. Sweep drive consists of a step motor, programmable control unit for step motor and switched mode power supply. The supporting frame consists of the upper base, lower base, supports and foot supports. The upper base is fixed at upper ends of supports. The lower base with foot supports is fixed at lower ends of supports. Pins are mounted at the upper base. Lifting mechanism is fixed at lower end of the upper base by bolts with pins screwed into them. The tool for electromechanic reinforcement of sleeve openings is mounted in the lifting mechanism cartridge. The latching device is fixed at the lower base of supporting frame. The step motor is connected to upper ends of pins. The programmable control unit for step motor and the switched mode power supply are fixed at the upper frame of the supporting structure. Joint coupling connects the shaft of lifting mechanism and step motor shaft.

EFFECT: smooth speed regulation is provided for movement of the tool for electromrechanic reinforcement of sleeve openings.

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Description

The invention relates to mechanical engineering, to tests and test benches, in particular, can be used to increase the wear resistance of the bushings in the radial pairs of friction "shaft-sleeve".

Known screw press [Patent No. 2393959, publ. 02/20/2010, class B30B 1/18], comprising a bed with straight guides, in which a slider is installed with the possibility of simultaneous translational and oscillatory movements for sequentially carrying out working strokes, a screw pair in the form of a screw and a nut, a forward and reverse rotation drive and a rotation drive.

The press has the following disadvantages:

- There is no way to harden bushings.

- There is no possibility of a smooth change in the rotational speed of the screw.

The purpose of the invention is to provide the ability to produce electromechanical hardening of the holes of the bushings and a smooth change in the frequency of rotation of the screw.

The technical result indicated is achieved by the fact that the installation additionally includes a lifting mechanism, studs, a tool for electromechanical hardening of the bushings, a fixing device, an articulated coupling. The rotation drive consists of a stepper motor, a programmable control unit for a stepper motor, a switching power supply. The bed consists of an upper base, a lower base, uprights, lower supports. The upper base is fixed from the upper ends of the racks. The lower base with the lower supports is fixed to the lower ends of the uprights. The studs are mounted on the upper base. The lifting mechanism is fixed from the lower end of the upper base with bolts that are screwed into the studs. A tool for electromechanical hardening of the holes of the bushings is installed in the cartridge of the lifting mechanism. The locking device is fixed to the lower base of the bed. A stepper motor is connected to the upper ends of the studs. The programmable stepper motor control unit and switching power supply are fixed on the upper base of the bed. A swivel coupling connects the shaft of the lifting mechanism and the shaft of the stepper motor.

In FIG. 1 shows a General view of the installation for electromechanical hardening of the holes of the bushings, in FIG. 2 - lifting mechanism, in FIG. 3 is a sectional view of FIG. 2, in FIG. 4 - fixing device.

The installation for electromechanical hardening of the holes of the bushings comprises a frame 1, a rotation drive 2, a lifting mechanism 3, the studs 4, a tool for electromechanical hardening of the holes of the bushings 5, a locking device 6, an articulated coupling 7, the rotation drive consists of a stepper motor 8, a programmable control unit for the stepper motor 9, a switching power supply 10, the bed consists of an upper base 11, a lower base 12, struts 13, lower supports 14.

The lifting mechanism (Fig. 2) consists of a housing 15, a lead screw 16, a cylinder 17, a flange 18, a lead screw nut 19, a shaped washer 20, clips 21, 22, a cartridge 23, which consists of a stem 24, nut 25, a current-insulating sleeve 26, gaskets 27, 28. The cartridge 23 is installed in the lower part of the cylinder 17 using a nut 25. Gaskets 27, 28 are installed at the ends of the nut 25. A current-insulating sleeve 26 and a rod 24, which is fixed with the nut 29, are installed in the hole in the nut 25 of the cartridge. A flange 18 is fixed in the upper hole of the cylinder 17. In the cylinder, to the lower end of the flange 18 is installed and the screw nut 19. From the upper end of the cylinder 17 in the grooves of the body 15, a shaped washer 20 is installed. The shaped washer 20 and the nut of the screw 19 are tightened together by means of bolts 30. The clips 21 and 22 are installed from the lower and upper ends of the upper base 11 of the bed 1 and pulled together by bolt connections 31. Thrust bearings 32, 33 are installed in the cages. A spindle screw 16 is installed in the holes of the bearings, which is fixed with a nut 34 and a lock nut 35. The washer 20 prevents the cylinder 17 from turning in the housing 15.

The locking device (Fig. 4) contains the clamps 36, 37, the base 38, the axis 39, the current-insulating strips 40, 41, the current-insulating sleeve 42, the strap 43. The clamp 37 is fixed to the base 38. The clamp 36 is fixed to the clamp 37 by means of bolts 44. An axis 39 is attached from the lower end of the base 38. A current-insulating gasket 40 and a current-insulating sleeve 42 are mounted on the axis from the lower end of the base 38. The locking device is installed from the upper end of the lower base 12 so that the axis 39 of the fixing device is in the hole of the lower base 12. From the lower the end face of the lower base 12 on the axis 39 has a current-insulating strip 41 and a strap 43, which is fixed with a nut 45 mounted on the axis 39.

The upper base 11 of the bed is fixed at the upper ends of the uprights 13, the lower base 12 with supports 14 is fixed to the lower ends of the uprights 13. The studs 4 are mounted on the upper base 11. The lifting mechanism 3 is fixed from the lower end of the upper base 11. A tool for electromechanical hardening of the bushings 5 installed in the cartridge 23 of the lifting mechanism 3. The stepper motor 8 is mounted in the upper ends of the studs 4 with bolts 46. The programmable control unit for the stepper motor 9 and the switching power supply 10 are mounted on the upper base ii frame 11, the hinge shaft coupling 7 connects the lifting mechanism and the shaft of the stepper motor.

Installation works as follows. The stepper motor is controlled using a personal computer through a programmable control unit for the stepper motor and a switching power supply. To install the processed sleeve in the fixing device, weaken the clamps of the fixing device and place the processed sleeve between them, tighten the clamps to fix the sleeve. Loosen the fixing nut of the fixing device and center the hole of the machined sleeve relative to the electromechanical hardening tool, then tighten the fixing nut of the fixing device again. Connect the electric power cables to the electromechanical hardening tool and to the fixing device. Using a personal computer, the speed of the stepper drive is set, and the rotational movement of the lead screw of the lift mechanism is converted into the translational motion of the cylinder of the lift mechanism and the cartridge installed in it with an electromechanical hardening tool. Contact the tool and the machined hole of the sleeve and turn on the supply of electric current.

The design of this installation for electromechanical hardening of the holes of the sleeves will increase the operational reliability of the executive surface of the holes of the sleeves, and the smooth adjustment of the speed of movement of the tool for electromechanical hardening will allow you to select the optimal modes of hardening.

Claims (1)

Installation for electromechanical hardening of the holes of the bushings, comprising a bed and a rotation drive, characterized in that it further includes a lifting mechanism, studs, a tool for electromechanical hardening of the holes of the bushings, a locking device and an articulated coupling, while the rotation drive consists of a stepper motor, a programmable control unit stepper motor and switching power supply, the bed consists of an upper base, a lower base, racks and lower supports, and the upper base is fixed len from the upper ends of the struts, the lower base with the lower supports is fixed on the lower ends of the racks, the studs are installed on the upper base, the lifting mechanism is fixed on the lower end of the upper base with bolts that are screwed into the studs, the tool for electromechanical hardening of the bushings is installed in the mechanism cartridge lifting, the locking device is mounted on the lower base of the bed, the stepper motor is connected to the upper ends of the studs, while the programmable control unit of the stepper motor and pulses An external power source is mounted on the upper base of the bed, and an articulated coupling connects the shaft of the lifting mechanism and the shaft of the stepper motor.

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