SU837727A1 - Apparatus for assembling threaded connections - Google Patents

Description

The device consists of a guide sleeve 1 (see Fig. 1), in which an inclined opening for feeding screw 2 is made. In the lower part of the guide hole of sleeve 1, contact (collector) rings are inserted & and 4, to which the contacts 5 and 6 are connected. The base part 7 with a threaded through hole is worn with a clamping finger 8, which is axially movable and preloaded by the spring 9. The pin 8 and spring 9 are inserted into the housing 10 of the clamping fixture. The finger protrudes from the socket under the base part 7. In the socket there is a gasket 11, made of a non-conductive material. Current-collecting contact 12 is missed inside the clamping finger 8. A current-collecting contact 13 is connected to the base part 7. A movable current-collecting contact 14 is fixed to the housing 10, which is pressed by the flat spring 15 and Vparaetc in the limiter. A fixed current-collecting contact 16 is fixed to the housing 10. In the upper part of the assembly device, there is a movable sleeve 17 with a socket made in the shape of a screw head. The sleeve 17 is made of a non-conductive material, and the inner part of the socket is covered with a metal layer. . Inside the sleeve 17, the tip 18 is missed, ending with a screwdriver. In the upper part of the nanotechnik, a silvered layer 19 is applied, which interacts with the collector ring 20 fixed in the insulator 21. KOHTaiKT 22 is connected to the collector ring 20. FIG. 2 schematically shows a device for assembling the threaded connections with the control system, into which the reverse link y In the lower part of the housing 23, the guide bushing 1 is fixed with the possibility of movement in the axial direction, and the rotational movement actuator 24 is fixed in the upper part of the housing, which is connected to the control unit 25. The housing 23 through the lever 26 is connected to the drive 27 of the reciprocating movement, which in turn is connected to the control unit 28. The contacts 5 and b through the element 29 OR are connected via the control units 25 and 28 to the actuator 24 of the rotary motion and to the actuator 27 of the reciprocating motion. Contacts 22 and element 29 OR are connected to element 30 AND, which in turn is connected to drive control unit 28. Contacts 22 and 12 are connected through element 31 and to control blocks 25 and 28, drive 24 and 27. Contacts 16 and 12 via item 32 and connected to block 25

The bushing 1 control drive 24 presses the spring 33.

The operation of the device is as follows.

A fitting 7 is put on the clamping device 8 on the finger 8, which interacts with the contact 13 on which the voltage is applied. Korpu 10 with all the elements fixed on it goes to the assembly by: st. A command is given to the compartment: a spruce (not shown) and a screw 2 is fed through an inclined hole into the guide sleeve 1. Through screw 2 on contact rings 3 or 4 from part 7, to which voltage is applied, contacts 5 or 6 or both are closed . Pins 5 and b are connected to OR element 29, which, when received from one of pins 5 or 6 or from both, pins 5 and b, together give a signal through control units 25 and 28 to start the operation of drive 4 of rotational motion and drive 27 of return forward motion. The actuator 24 operates in two modes of operation (rotational and reciprocating). The rotation from the actuator 24 is transmitted to the handpiece 16 with the sleeve 17. The housing 23 from the actuator 27 is lowered through the lever 26. The sleeve 1 rests on the base part 7 and compresses the spring 33. The sleeve 17 in the process of lowering touches the screw head 2. Through the screw 2. from the base part 7 through the current-collecting ring 20, contact j22, which is connected by element 30 AND, which is connected to element 29 OR, and therefore, contacts 5 and b, is closed. When a signal arrives at element 30 And from contact 22 and from element 29 OR (from one or both contacts 5 and b), a signal is sent to control unit 28 of the actuator 27 for reciprocating motion. Drive 27 stops. The sleeve 17, by gripping the screw 2 with its socket, presses it with a constant force. After the screw 2 is caught, the screw searches for the threaded hole of the part 7. The tip 18 performs an auto-search movement, rolling around the ring 20. The screw 2 is aligned with the threaded hole of the part 7 by the plane of the threaded end 7. , it sinks into the threaded hole and closes contact 12. When closing contacts 12 and 22, which are connected to element 31, the command is issued to actuator 24, which starts to operate in the mode of reciprocating rotational motion, and to actuator 27, which Starts a further lowering of the housing 23. With such a reciprocating movement of the Tip 18 with the sleeve (17 screw 2 begins to nab in the threaded hole of the part 7. When you press the screw 2 on 2-3 turns, he embeds the clamping finger 8, which in turn acts on

Moving contact 14 pushes spring 15 and closes contact 16. Closing contact 16 indicates screw 2 in threaded part 7. When closing contacts 12 and 16, which are connected to element 32 I, the control unit 25 is given through control unit 25, which starts working in rotation mode. Then there is a further screwing of the screw 2 to the full depth in the part 7. The actuator 27 through the lever 26 raises the housing 23 upwards. The sleeve 1 is pressed by the spring 33 to its original position. The housing 10 with the assembled assembly enters the removal position of the finished assemblies and the loading of the part 7. Then the whole cycle is repeated.

This device allows you to control the assembly process in stages (the presence of a screw, search, baiting, screwing) and control this process in optimal modes. Phased assembly control in conjunction with feedback elements in the control circuit allows the creation of optimal modes for each assembly stage.

Claims (2)

1. A device for assembling threaded connections, rotational and reciprocating drives, an auto search device, a guide sleeve, a fixture having a socket and a finger, a tip with a sleeve and a drive control system, characterized in that, in order to improve reliability assemblies, it is provided with slip rings mounted on the inner surface of the sleeve hub and slip collectors installed in the basic device, some of which are located in the socket and in the palm e, wherein the slip rings and the contacts are connected through a drive control system. 2. The device according to claim 1, wherein the drive control system is equipped with an OR element and three AND elements, the current-collecting rings of the guide bush are connected to the inputs of the OR element, the output of which is connected to the first 5 inputs of control units for rotational drive and reciprocating movement and with one input of the first element I, the second input of which is connected to one of the pick-up 0 rings, and the output is connected to the BTOpcwy input of the drive control unit of the reciprocating movement,. wherein the said collector ring and the collector contact located in the finger are connected to the inputs of the second element AND, and the output of the latter is connected to the third input of the reciprocating drive and the second input of the rotation drive, the first and second inputs of the third element AND respectively, with a current-collecting contact, placed in the finger, and with a current-collecting contact placed in the socket, and: the exit connected to the third input of the rotational drive control unit. Sources of information taken into account in the examination 1. USSR author's certificate 607696, cl. In 23 R 19/06, 1976. sixteen Vn nat.1 27