SU522949A1 - Ball Finishing Device - Google Patents

Description

one

The invention relates to ball screwing machines and can be used in the bearing industry.

There are known devices for finishing balls, including three rotating relative to each other disks, the middle of which is provided with working grooves for balls on its opposite ends, as well as a mechanism for transferring balls from the groove to the groove.

The proposed device differs from the known ones in that it is provided with an insert installed in the hole provided in the pentral part of the intermediate disk at the beginning of the spiral groove, and also mounted on the periphery of the fixed disk by a tape mechanism driven by one of the rotating disks, with the longitudinal axis of the tape mechanism located on the straight line, which is a continuation of the spiral.

This provides improved processing performance when the spiral form of the working grooves.

FIG. 1 shows the proposed machine when removing the upper disk, top view; in fig. 2 is a section along the line A-A in FIG. one.

The device consists of the upper 1 and lower 2 disks, receiving rotation from the electric motor 3 through the variable 4 and the differential 5.

Between the upper 1 and lower 2 disks there is a non-rotating disk 6, which with

the upper and lower sides has grooving working gutters. A replaceable liner 7 is fixed in the central part of the disc 6 for transferring the balls from the upper spiral working chute to the lower one.

At the periphery of the non-rotating disk 6, a tape mechanism 8 is fixed for transferring the balls from the lower spiral working chute to the upper one. The belt mechanism 8 consists of a housing 9, a drive 10 and a driven 11 roller, on which the belt 12 is tensioned with a trapezoidal longitudinal groove (see FIG. 2, section BB). To adjust the tension of the belt 12, there is an adjusting screw 13. The drive 10 and the driven 11 rollers are mounted in the housing 9, which is rigidly fixed to the non-rotating disk 6.

A crown 14 fixed on the upper disc 1, gears 15-18 serve to transmit the rotation to the drive roller 10. On the upper surface of the body 9 (see Fig. 2) there is a loading window closed by a valve 19. The loading tray is installed above the window. On the lower surface of the housing 9 there is a discharge port, also closed by a valve 20. The operating force P is transmitted from the washer 21 to the discs 1, 6, 2 and is perceived as a supporting bearing 22. A key 23 is provided to prevent rotation of the non-rotating disc 6.

The device works as follows.

From the electric motor 3, through the variable 4 and the differential 5, the rotation is transmitted to the lower 2 and upper 1 disks, respectively, in opposite directions with the same speed. On the upper disc 1 is fixed gear rim 14, which, through gears 15-18, transmits rotation to the drive roller 10 of the belt mechanism.

The roller 10 drives the endless belt 12, with which the balls 24 are fed into the upper spiral working chute and under the influence of the upper rotating disk 1 during processing are moved to the central part of the non-rotating disk 6, and through a removable insert 7 fixed in the central part of the non-rotating disk 6, the balls are transferred to the lower working spiral chute (Fig. 1, section BB) under the influence of the lower rotating disk 2 move along the lower spiral chute of the non-rotating disk from the center to the periphery and fall into the same the forehead of the endless belt 12 of the belt mechanism 8, after which the processing cycle is repeated.

Primary booting is done with divorced disks.

The plane in which the endless belt 12 is located is located tangentially to the upper and lower spirals at points from the exit from the non-rotating disk 6. This provides the balls 24 with the opportunity to obtain the relative speed required to enter and exit the treatment zone. To do this, you must meet the condition

:P,

Ugde Vy - the speed of the centers of the balls on the transport device;

VO is the speed of the centers of the balls, which is necessary for entering the treatment zone and exiting it.

This condition is achieved by the fact that the drive of the transport device 8 is driven from the gear wheel 14, through gears 15-18, the gear ratio of which is determined from the condition of equality of speeds.

The balls are discharged and loaded into the machine as follows. Axial thrust is removed. The discs 1 and 2 are given minimal revolutions. On the lower surface of the housing 9, the valve 20 opens the discharge window, and the processed balls begin to be unloaded. Simultaneously with the valve

19, a loading window located on the upper surface of the housing 9 opens. Several nylon balls of bright color are loaded onto the loading tray, the diameter of which and the diameter of the processed

balls are the same, then a batch of balls is loaded for finishing. Nylon, and then metal balls from the tray, hitting the loading window, endless tape 12 is fed into the upper working spiral chute

non-rotating disk 6, gradually filling the entire working area, displacing the processed balls, which are discharged through the discharge window. When the nylon balls exit the discharge window, the machine is stopped, the unloading of the processed balls and the loading of balls for finishing are considered complete. The valves 20 and 19 are closed, and the cycle of finishing the new batch of balls is repeated.

Primary booting is performed on divorced disks.

The proposed device more than doubles the productivity, since the balls are adjusted in the machine with

both sides of a non-rotating disk.

Claims (1)

Invention Formula A device for finishing balls containing three rotating relative to each other disks, the middle of which is provided with working grooves for balls at its opposite ends, as well as a mechanism for transferring balls from a groove to a groove, characterized in that, in order to increase the productivity of processing with a spiral shape working grooves, the device is equipped with a liner installed in the hole provided in the central part of the intermediate disk at the beginning of the spiral groove, as well as mounted on the periphery of the fixed disk drive, a tape mechanism driven by one of the rotating disks, the longitudinal axis of the belt mechanism is located on a straight line that is an extension of the helix. 5g, / / 2/19 15 I / /. .