SU863300A1 - Device for automatic assembling of threaded connections - Google Patents

Description

one

The invention relates to the automation of assembly works in mechanical engineering and other fields of technology, in particular for the automation of assembling threaded connections.

A device for assembling is known: a threaded connection comprising a spindle kinematically connected with a chuck, a clutch of a torque limit, the coupling halves of which are associated with the spindle and the chuck, and a spring-loaded stepped plunger located along the spindle axis.

The known device is intended only for the assembly of studs with basic parts and cannot be used for tightening the bolts, which limits its technological capabilities. In addition, it has poor performance and reliability of the assembly process.

The purpose of the invention is to expand technological capabilities, increase productivity and reliability.

The goal is achieved by the fact that axial holes are made in the spindle and in the i-tron, the stepped rod is located in these holes, is spring-loaded in the cartridge side and is installed with the possibility of interaction with the end face.

cartridge, and the coupling half spindle mount. with the possibility of axial movement.

FIG. 1 shows a device for 5 automatic assembly of threaded connections; FIG. 2 is a section A-A in FIG. one.

Air guides 3 are mounted on guides 1 for moving the wrench 2, the rod of which is connected to the bracket 4 carrying the wrench 2. The tool 5 is rigidly connected to the wrench i, telling the search cartridge 15 to the chuck 6 installed in it. On the face surface. cartridge 6 on the side of the screw-on part (bolt) there is a socket 7 for the head of this part. On the other hand, the chuck half 20 of the coupling 8 is made on the cartridge. The second half coupling half 9 is mounted on the splines 10 of the spindle 11 with the possibility of axial movement and is prevented from falling down by the stop 12 against which it is pressed by the spring 13. Half coupling 8 and 9

form a clutch of the limiting torque. In the spindle 11 on its axis there is a hole in which a stepped plunger 14 is mounted, which is pressed by the spring 15 to the stop 12 in the direction

cartridge 8. The pusher 14 has a protrusion 16 for abutting the end of the cartridge b, the lower end of the pusher 14 passes through the axial hole in the cartridge b and serves to push the part head out of the socket 7 of the cartridge 6. In addition, sensors 17 and 18 are mounted on the guides 1 respectively, the upper and lower positions of the wrench. The device works as follows.

When the pneumatic cylinder 3 moves downward, the bracket 4 with the constantly engaged wrench 2 and with the special tool 5 moves downwards along the guides 1. As soon as cartridge b, receiving the search movement of fixture 5, rests against the head of a bolt 19 pre-installed above the basic assembled piece 20, the axial movement of cartridge 6 stops and the cartridge heads search for a bolt-head 19. At this time, the pusher 14 abuts against its bulge 6 and also stops, the spring 15 is compressed. As soon as the faces of the socket 7 of the cartridge 6 and the bolt head match, the spring 15 lowers the cartridge b, thereby putting it on the go of the bolt. Thereafter, the bolt, together with the cartridge b, begins to perform search movements, enters the opening of the base part 20, and becomes profitable. Upon further movement of the rod of the pneumatic cylinder 3, the coupling half 9 rests on the coupling half 8, the spring 13 begins to compress, and the coupling half 9, turning relative to the cartridge 6, engages the coupling half 8. The wrench 2 wraps the bolt 19. When the pneumatic cylinder 3 comes to the bottom position, the compression spring 13, he presses the sensor 18, which gives a signal to return the rod to its original position. During the stroke of the pneumatic cylinder 3 upward, the spindle 11 also rises, the spring 13 expands until the stop 12 starts to raise the coupling half 9. At this

coupling halves 8 and 9 are uncoupled, and the disengagement along the contact surfaces of the coupling halves takes place with less force than the uncoupling force of the cartridge and the bolt head. After the coupling half has been disengaged, the tool 5 rises, while the pusher 14 pushes the bolt head out of the cartridge b. In the upper position, the sensor 17 gives a signal of readiness for a new work cycle.

The invention allows to significantly increase the number of revolutions of the wrench, i.e. increase productivity. In addition, the presence of a stepped pusher passing through the holes 5 in the cartridge; increases the reliability of disengagement of the bolt head and cartridge.

Claims (1)

1. Korsakov B.C., Novikov MP Handbook of mechanization and automation of assembly work. M., Mashgiz, 1961, p. 194, f. 148.