SU1606303A1 - Arrangement for pressfitting assembly - Google Patents

Abstract

This invention relates to mechanical assembly production, in particular, to devices for the automatic assembly of press joints. The purpose of the invention is to expand technological capabilities, increase reliability and quality by ensuring the assembly of assemblies such as engine cylinder blocks, as well as more accurate mutual centering of connected parts. The pressurized bearing cap 2 is removed from the feed conveyor by a drive support 28. A gripping device in the form of a drive carriage 7 fixes part 2 on the centering pins and latch and transfers it to the assembly position. The final assembly mechanism here interacts with the gripping units and presses the cap into the previously fixed cylinder block 3. The assembly is carried out with the relative orienting of the parts to be connected. 6 Il.

Description

The invention relates to machine-assembly production, to devices for the automatic assembly of press joints.

The aim of the invention is the expansion of technological capabilities, as well as improving the reliability and quality of assembly by allowing the assembly of units such as engine blocks with bearing caps, as well as more accurate mutual centering of the connected parts.

FIG. 1 shows the proposed device, a general view; in fig. 2 - mechanisms for preliminary installation, final assembly and fixation, section; in fig. 3 - capture with centering elements of the mechanism of preliminary installation, a section; in fig. 4 shows section A-A in FIG. 2, the position of the nodes at the time of capture; in fig. 5 - the same, the position of the nodes at the end of the fitting; in fig. 6 — node I in FIG. 3

The device contains mounted on the basis of 1 two mechanisms of single-piece supply of assembled parts, covers 2 main bearings and blocks of 3 cylinders. These mechanisms are made in the form of conveyors 4 and 5. At the position of the assembly on base 1, a frame 6 is mounted, on which the mechanism of pre-installation of component part 2, the mechanism of final assembly, the fixer of the base part (3) and the lifting mechanism of component part (2) are installed.

The pre-installation mechanism includes a gripper, made in the form of a carriage 7 mounted with the possibility of translational movement along the guide 8 of the frame 6 from the actuator 9. The guide 8 is located in a plane perpendicular to the pressing direction. In addition, the gripper includes a ha 10, which is placed in the central opening of the carriage 7 with the possibility of axial movement. At one end of the pull rod 10, a groove 11 is made, and a pressure bar 12 is rigidly fixed on the other. To hold the cover 2 during its transfer, a spring-loaded latch 13 mounted on the side face of the pressure bar 12 serves.

The pre-installation mechanism also includes centering elements made in the form of pins 14 with orienting pockets 15. The pins 14 are spring-loaded relative to the pressure bar 12, are installed in the holes of the latter and the carriage with the possibility of axial movement and are interconnected by plates 16 and 17. On the plate 16 are placed adjustable stops 18 of the movement of the pins 14. The meanism of the final assembly is made in

the form of the power cylinder 19, on the rod 20

which is installed with the ability to interact with the groove 11 t g 10 tip

21.

The latch of the base part (block 3 of cylinders) is made in the form of a rod 22, hingedly connected through levers 23 and 24 with a rod 25 of a power cylinder 26.

22 is mounted with the possibility of translational movement in the guide frame 6. The lifting mechanism of the component part (the main bearing cover 2) is made in the form of a power cylinder 27 and

fixed to its rod supports 28. To limit the travel movement of all mechanisms are located on the frame limit switches.

The device works as follows.

In the initial position, the carriage 7 is located above the support 28 of the lifting mechanism. Bearing 28, lifting, grabs the cover 2 off the conveyor 4, spring loaded

The pins 14 of the pre-fitting mechanism are inserted into the openings of the lid and are fixed in the axial direction. For more precise mounting of the cover 2, the spring-loaded latch 13 fixes it in the radial

direction.

Then the carriage 7 is moved, moving the cover to the assembly position. The cylinder block 3 is then moved to the assembly position by the conveyor 5 and secured by a drive latch 22. A command to stop the carriage 7 is supplied when the stop 29 is closed by the stop switch 30. When the carriage 7 is moved, the tip 21 of the rod 20 engages with a groove 11 tons of g

10. The power cylinder 19 is actuated, and a pull of 10 with the pressure bar 12 presses the cover 2 into the cylinder block 3. The pins 14 are then inserted into the holes of the block 3, orienting the cover relative to the latter. Simultaneously with the pins 12, the plate 16 is moved with the constraints 18 until it interacts with the carriage.

After pressing in the power cylinder 19 returns to its original position t gu 10s

the clamping bar 12, as well as the pins 14. The carriage 7 is disengaged from the final assembly mechanism by the actuator 9 and moves to the lifting mechanism of the component part 2. The cycle is repeated.

Claims (1)

Invention Formula A device for assembling by pressing, comprising mechanisms for single-piece supply of parts mounted on the basis, a base fixture with a drive, a component presetting mechanism, made in the form of a gripper with centering elements installed with the possibility of translational movement from the drive in a plane perpendicular to the direction of pressing, as well as a final assembly mechanism, characterized in that, in order to expand the technological capabilities and increase the reliability of the assembly quality , it is equipped with a component lifting mechanism, the yoke is made in the form of a carriage with a central and peripheral through holes, rods with a groove at one end, fitted with 3 central holes of the carriage with the possibility of axial movement, a pressure plate with holes, rigidly fixed five Noah at the other end of the rod, a spring-loaded latch mounted on the side face of the pressure plate, as well as a plate with limiters; placed between the carriage and the pressure bar, the centering elements of the grippers are made in the form of pins with orienting rims arranged for axial movement in the holes of the carriage and the pressure bar, spring-loaded with respect to the latter and rigidly connected to the plate, cylinder with a tip on the rod, installed coaxially with a grip of the grip in one of the extreme positions of the latter with the possibility of interaction of the said tip of the rod with the groove of the ty. 2 FIG. dl Srig. Aa t P ./J 5