SU921756A1 - Assembling thread screwing-in head - Google Patents

Description

(54) ASSEMBLY FOR REZOBOZAVERTYV.LYUSH.LYA HEAD

one

The invention relates to the production of mechanical and mechanical assembly and can be used in the automation of assembly processes in various parts of machinery, in particular, machine-building, and in the assembly of assemblies such as automobile brake pistons. five

A known assembly head comprising a housing, a ram, a piston rod and a working tool 1 installed in its cavity.

A disadvantage of the known device is that the installation of the stud (screw) and the base part, as well as the supply of the assembled parts to the assembly zone, is done manually.

The purpose of the invention is to automate 15 assemblies and increase device reliability.

The goal is achieved by the fact that the assembly thread-closure head is equipped with a locking unit and a gripping unit mounted concentrically with a working tool, which can be moved along its axis and relative to the piston-piston, and the gripping unit is designed as a housing and installed in it zazh.mnyh sponges with privolom.m, and blocking node vypulneyi in the form of a liska with razolozheneny p1 on it ip zh.chna.mi and uiora.mi, at the same time, uzo, 1 capture is connected to the piston rod and Usta.yuvlen with the possibility of interacting with 1; () p blocking node s.

On (|) u. 1 depicts an assembly of a rezbakauvert1 | voyu1a th. in the extreme m. ver.hnem 11, 1: and {psi.inhm 1, section; on fi1. 2 - the same, in the extreme position; Fig 3 is a section A-A in FIG. one; in fig. 4 - section B -13 in FIG. 3; in fig. 5 - set of assembled parts.

The assembly thread-closing head is one of the assemblies of the automatic assembly installation and is fixed to rack 1 by case 2. Kopiiyce 2 has a hole that is in one cavity of cylinder 3. P. cylinder 3 is installed coaxially with the chuck 4 auto. Mathematical assembly installation. In QI / 1INDR 3 built nopuiCHb 5 e two rods 6 and 7 (piston rod). Inside pori1n 5, a through hole 8 is made along its axis. By the end of the rod 6, the engine 9 has the same fastening, the spindle 10 of which enters the hole 8 and is installed coaxially with it. At the end of the stem 7, a hollow cup 11 is rigidly mounted. The spindle 10 is connected to the bushing 12 via the / safety clutch 13, the gearbox 14, the torque limit clutch 15 installed coaxially with the piston 5 and the cup 11. The safety clutch 13 and the gearbox 14 have one degree of freedom: rotation around its axis. To the end of the rod 7 is fixed to the housing 16 of the gripper 17. Between the end 18 of the housing 16 and the end of the rod 7 mounted spring 19, squeezing the housing 16 to its original position. The housing 16 has holes 20 and 21 parallel to the end face 18. The housing 16 is installed with holes 20 and 21 perpendicular to the longitudinal axis of the mechanical arm of the automatic assembly unit, as well as symmetrically and perpendicular to the axis of the piston 5. The housing 16 has a hole 22 perpendicular to the holes 20 and 21 on the axis of their symmetry. Two pneumatic cylinders fitted with clamping jaws 23 are built into the holes 20 and 2. The housing 16 (Fig. 3) in the lower part is made with axles, in which the supports 24-27 are rigidly seated. Stepped rods 28 and 29 are integrated into onophj 24-27 without possibility of mixing with respect to supports 24-27, as well as housing 16. Clamping jaws 23 are worn on small diameters 30-33 of rods 28 and 29. Between the ends 34-37 and the ends of the supports 24-27, there are gaps, the total length of which is in pairs larger than the diameter of the piston 38 of the assembled product. Positions 39 - the second part of the assembled node. The clamping jaws 23 have the ability to mix with respect to the rods 28 and 29 by the size of these gaps. Between the ends 40 and 41 of the housing 16 and the ends 42 and 43 of the jaws 23 there is also a gap whose size is larger than the diameter of the piston 38. In the initial position of the jaw 23, the ends 42 and 43 contact with the ends, and between the ends 34-37 and the ends of the supports there is gap. The cup 11 can be contacted with the jaws 23 through prisms 44 and 45, made on the inner side of the jaws 23. Prisms 44 and 45 are made parallel to the cylinder 46 of the cup 11 surface. At the moment of contact of the prisms 44 and 45 with the cup 11, there is a gap between the ends of the stepped jaws . From one end inside the rods 28 and 29 there is a threaded hole through which air can be supplied under the ends 47-50, jaws 23. Each clamping sponge has a threaded hole through which air can be fed under their ends 34-37. The jaws 23 are made of supports 51 and 52 (FIG. 7), which directly hold the piston 38 before assembling it. Moreover, when the jaws 23 are compressed and the prisms 44 and 45 are in contact with the cup 11, there is a gap between the supports 51 and 52 and the cylindrical surface of the piston 38 to ensure free rotation of the piston. The position of the clamping jaws 23 relative to the piston 5 is adjusted by screws 53 connecting the body of the piston rod 5 to the body of the gripper assembly 16. A bearing 55 is installed between the cylinder-forming surface 54 of the cup 11 and 55 in order to prevent the jaws from abrading when the head is working and In connection with the need to reduce the operating time of the screwdriver rotation drive, between the ends of the rod 7 and the body 16 of the pickup unit a clamping jaws blocking unit is installed, which is made in the form of stop screws 56 and springs 57, is installed s on the disc 58. The disc 58 has 59 and 60 intended for contact with stops gripping the housing. The force of the springs 57 is greater than the force of the springs 19 and less than the force developed by the pneumatic shaft 3. The assembly thread-closing head of the following pattern is working. At the loading and threading position of the automatic assembly unit, a part (e.g., piston 38) is fed from the hopper by the tilter to the mechanical arm 61, the mechanical arm 61 feeds the part into the solution of the clamping jaws 23, the automatic operation is activated: the jaws 23 are compressed by the cylinders and the mechanical arm 61 is withdrawn initial position . Air through the clamping jaws 23 is brought under the ends of 34-37 jaws and displaces them into the side of the cup 11. At the same time, the jaws close and hold the piston 38. Tight junction between the 44 and 45 jaws to the cup 11 takes place. The cylinder 3 developed by the piston 5 is supplied. Air is supplied to the cylinder 3 cavity from the side of the rod 6, the engine 9 is turned on. The assemblies fixed on the piston 5: the engine 9, the coupling 13, the reducer 14, the coupling 15, the screwdriver 12, and also the housing 16 of the node gripper, springs 19, pneumatic cylinders with clamping jaws 23 and clamped in them the piston 38 is fed to the cartridge 4 before the end face 62 of the body 16 contacts the end 63 of stops 59 and 60. After the body 16 comes into contact with the stops 59 and 60 of the blocking unit, only the piston 5, engine 9, clutch 13, gear 14, clutch 15, screwdriver move down 12, the housing 16, the pneumatic cylinders with the clamping jaws 23 and the part (piston 38) clamped in them due to the difference in the forces of the springs 19 and 57 stop. The springs 19 at the same time begin to compress to the rigid stop of the end 18 of the housing 16 and the end 64, and the screwdriver 12 is displaced relative to the piston 38 clamped in the jaws 23, and engages with its slot, abuts the end of the slot, stops. The cams 65 of the clutch 15 are mixed relative to the cams 66 and are engaged with them. The screwdriver 12 receives rotational motion through the cams 65 and 66, gear 14, clutch 13 from the engine 9. At this time, the end of the rod 7 is in contact with the end of the disk 58 and all components and parts attached to the piston: engine 9, clutch, 13, gear 14 , coupling 15, disk 58, stops 59, 60, stop screws 56, housing 16, compressed springs 19, pneumatic cylinders, clamping jaws 23, screwdriver 12, coupled with a part (piston 38) clamped in the jaws, are fed to the cartridge by an amplifier developed by cylinder 3 Springs 57 begin to stretch. Clamped in the jaws 23, the part with the threaded part is in contact with the counter threaded part of the screw 39, which is clamped in the jaws of the clamping chuck 4. The rotation of the screw is prevented by a screwdriver of the clamping cartridge.

Piston 38 is secured with a screwdriver 12. Piston 38 is screwed onto screw 39. When the required torque is reached, c. the threaded connection of the torque limiting coupling 15 disengages the cams 65 and 66. The air enters the cylinder 3 from the rod end. All nodes return to their original position. The assembled assembly remains secured in the cartridge 4, from where it is removed by the mechanical arm of the automatic installation.

The proposed design of a thread-closing device with a gripping unit of the screwed-in product and a blocking block for feeding the clamping jaws made it possible to create an automated assembly unit for assembling products and, consequently, to increase the productivity of the assembly and improve the working conditions of the service personnel.

Claims (1)

1. An assembly threading head, comprising a housing, a power cylinder and a working tool installed in the piston / piston cavity, and which, in order to increase reliability and productivity, it is equipped with a locking assembly and a locking assembly installed concentrically with the working tool. having the ability to move along its ocii and relatively iuTOK piston, the gripping unit is installed in the form of a housing and pressure jaws installed in a new motor with a drive, and the locking unit is made in the form of a disk with springs located on it gins and stops, while the gripping unit is kinematically connected with the rod-piston and installed with the possibility of interaction with the stops of the blocking unit. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 626931, cl. B 23 P 19/06, 1974. g Ж h: / } 2 five  X 152 Figl $ S $$$ $$$$$$$ $$$$$$$$