SU1323322A1 - Device for tightening and centre-punching screws - Google Patents

Abstract

The invention relates to the field of engineering. The aim of the invention is to increase reliability by ensuring that the screw is locked by kern at certain points. The device for screwing and centering the screws includes a rotation drive, sensors for switching the gear on and off, a hammer with a tooth core, a hammer with a locking mechanism, a knot for limiting the tightening torque, and a spindle with a screwdriver. The spindle has a rigidly mounted gear sleeve with longitudinal grooves, and the spindle itself is COMPLETED with inclined slots, inside it there is a spring-loaded firing pin, extended with an annular groove, one of the ends of which periodically interacts with the sensors. A screwdriver is installed inside the impactor and is spring-loaded in the axial direction, and its blade is located in the same plane with the tooth of the core of the impactor mounted in the spindle with the possibility of joint rotation and axial movement. 2 Il. I (L

Description

The invention relates to mechanical engineering, in particular to devices for screwing and centering threaded connections, in particular screws, and can be used in any industry in the manufacture and repair of critical connected parts.

The aim of the invention is to increase reliability by ensuring that the screw is locked by certain- ning at certain points while achieving high accuracy at certain points of a given tightening torque and turning off the rotational drive after the centering of the screw.

Fig. 1 schematically shows a device for tightening and centering screws; in Fig.2 a cut of A-L in Fig.1.,

The device for screwing and centering the screws includes a housing 1, a rotational drive 2 disposed thereon, sensors 3 and 4 enabling and disabling the latter, a drummer 5 with tooth core 6, a firing pin 7 with a locking mechanism 8, a torque limiting unit 9 The screwing and wrapping working tool is in the form of a spindle 10 mounted by bearings 11 in the housing 1 and a screwdriver 12. The device is fitted with a rigidly mounted spindle 10 and an associated gear 13 of the drive 2 with a gear sleeve 14 with longitudinal grooves 15, Spin-35 tooth 6 core abutting fleeced del 10 is formed with inclined prore- item 43, the spindle 10 is lowered to

3, inside which is located an axially tightened axially by means of a spring 17, a firing pin 7, provided with an annular groove 18, the free end 19 of which is intended to periodically interact with sensors 3 and 4 to turn the drive 2 on and off. The jacks are made in the form of a pushing sleeve 21 with radial holes 22, pins 23- fixed in them, screwdriver 50 passing through 50, longitudinally inserted longitudinally placed on the gear bushing 14 and pressed by a spring 20 relative to the spindle 10. grooves 15 of the gear sleeve 14 and cooperating with inclined slots 16 of the spindle 10, on the outer surface- which the washer 24 has a pin 25 and nut 26,

The locking mechanism 8 of the striker 7 is designed as spins installed inside

five

0

five

0

cases 10 and axially pressed against him and striker 7, respectively, springs 27 and 28 of sleeve 29 and guide 30 with radial grooves 31-, in which balls 32 are placed, designed to interact with annular groove 18 of striker 7. Screwdriver 12 is installed inside the drummer 5 and is axially pressed against it with the help of spring 33, and the blade 34 of the screwdriver 12 is located in the same plane B in the teeth by the core 6 of the drummer 5 installed in the spindle 10 with the possibility of joint rotation and axial movement. The spindle 10 and the hammer 5 are pressed in, respectively, pins 35 and 36, designed to interact with grooves 37 and 38, made in the drummer 5 and a screwdriver 12. At the end of the spindle 10, a flange 39 is made, and on the drummer 5 a restrictive nut 40 with a rubber ring 41 is installed. and locknut 42, Assembled parts 43 and 44 are connected by screw 45,

The device works as follows.

Mounted on a vertical carriage (not shown), the device is lowered down. A screwdriver 12 meets the screw 45 and sinks into the hammer 5, compressing the spring 33. With further movement of the device down

placing a stop in the ring 41 of the restrictive nut 40, a gap o is selected between the hammer 5 and the guide 30, the force spring 17 and the spring 28 are compressed, holding through the Shariki 32 with the help of the sleeve 29 the hammer 7 in the guide 30.

Relative spindle movement

10 downward relative to the striker 7 causes the rotational drive activation sensor 3 to close. The blade 34 of the screwdriver 12 falls into the slot of the screw 45 and begins its wrapping, and when

gives the screw 45 under the action of the spring 33. When the screw 45 is turned, its rotation stops, and the gear bushing 14, continuing to rotate and rotating the pins 23 together with itself, causes the pushing sleeve 21 to lower as the pins 23 slide along the inclined slots 16 spindle 10 and lower in

longitudinal grooves 15 toothed bushings 1 4.

Lowering the pushing sleeve 21 together with the pins 23 causes the downward displacement of the sleeve 29 relative to the guide 30 with balls 32, which roll out of the radial channels 31 of the guide 30 into the groove of the sleeve 29 and release the striker 7, which under the action of the force spring 17 strikes fo the hammer 5, and the teeth of the core 6 deform the metal of the assembled part 43 into the slot of the screw 45 to be rolled. Disruption of the striker 7 lowers its free end 19 to the sensor 4 f5 deactivating the rotation of the spindle 10 with a screwdriver 12. The rotation drive 2 stops and the device retracts s upwards from assembled parts 43 and 44. A torque wrap and 20 cores are made, and the cores are made at the points where the screw spline is, as the tooth 6 of the core 6 and the blade 34 of the hole 12 are in the same plane.

The device is ready for the next cycle.

Claims (1)

Invention Formula thirty A device for tightening and centering the screws, containing a rotational drive, sensors for turning the gears on and off, a hammer with a tooth, a hammer head with a locking mechanism, auger torque limiting torque, and a wrench with a screwdriver, in the form of a spindle, characterized by that, in order to increase reliability, it is fitted with a spindle rigidly mounted on a spindle and kinematically connected to a drive with a longitudinal grooved bushing, the spindle is cut out with slots inclined to the axis, The unit is axially spring-loaded, is made with an annular groove and is designed to periodically interact with the free end with the drive enablement and deactivation sensors; the torque limiting assembly of the puff is made in the form of a pressure sleeve sprung relative to the spindle with radial holes, the pins fastened in them, passing through the longitudinal grooves of the gear sleeve and intended to interact with the inclined slots of the spindle, the locking mechanism is made in With a sleeve installed inside the spindle and spring-mounted relative to it and a guide with radial grooves in which balls are placed to interact with an annular groove, a screwdriver is installed inside the drummer and spring-loaded in the axial direction, the blade is located in the same plane with the tooth microns. drummer, and the latter is installed in the spindle with the possibility of joint rotation and axial movement. 4t 1 fi8.2 VSCHPI Order 2909/17 Random polygons pr-tie, Uzhgorod, st. Project, 4 Circulation 975 Subscription