SU884982A1 - Apparatus for centrifugal treatment of parts - Google Patents

Description

(54) DEVICE FOR CENTRIFUGAL DETAIL TREATMENT

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The invention relates to centrifugal devices for the bulk machining of parts in a loose abrasive environment using centrifugal forces and can be used in the machine-building and other industries.

Devices for centrifugal processing of parts are known, comprising a container with a grinder, the bottom of which is formed by a rotating bowl, above which is a screen made in the form of a truncated hollow cone with a central hole, the generators of which are at an angle to the axis of rotation of the bowl movement from the movement mechanism 1.

A disadvantage of the known devices is the inability to control the processing process, separation and unloading.

The purpose of the invention is to expand the technological capabilities of the device.

This goal is achieved by the fact that in the bottom of the bowl a central opening is made, which is blocked by a plug inserted into the device, and the screen is made in the form of an elastic perforated shell and is installed rotatably from the mechanism inserted into the device and the angle of its arrangement is inserted into the device a lever mechanism whose levers are hinged at one end on the inner surface of the screen, while the others are kinematically connected with the mechanisms of its movement, while the dimensions are muffled ki are selected from the condition of its capture by moving generators of the screen.,

The drawing schematically shows

15 a device for centrifugal machining of parts.

The device consists of a conical rotating bowl 1 mounted on a shaft 2 connected to the drive of a rotating machine (not shown). A bowl 1 with a sealed gap covers the cylindrical shell of the container 3, covered with a lid 4- on top. A guide is attached to the center of the cover .5

25 a sleeve 6 mounted inside it with a bearing assembly 7 and a shaft 8 having a telescopic support 9 inside the sleeve 6. The shaft 8 and the sleeve b are connected to each other by a ball-joint 30 with a lever arm 10 connected to an elastic perforated shell-shield 11. By means of a coupling The 12 shaft 8 is connected to a reversible rotational drive 13 mounted on the slide 14 on the frame 15 fixed to the lid 4. The bearing assembly 7 of the sleeve 6 rests on the shoulder of the screw wheel 16 which enters the automatic engagement with the screws 17, one of which muff The 18 is associated with a reversible rotational drive 19 mounted on the bands 14 in the same way as the drive 13. The levers 11 that are out of the screen

10 covered by protective sleeves 20.

In the middle part of the bowl 1, a mushroom-shaped elastic thin-walled plug 21 is installed, having grips on the bottom for attachment to the protrusions in the middle of the bowl during processing. The diameter of the mushroom-shaped part of the stub is slightly larger than the diameter of the central opening of the screen at the time of unloading the container.

In order to preset the screen to a predetermined depth inside the container, the lid 4 on each side has lifting legs 22 with vertical openings on them for fastening the lid to the shell 3 of the container container.

The device works as follows.

When the cover 4 is removed, a mixture of parts and abrasive is fed to the thicket 1. The bowl drive is activated, and it is driven by the shaft 2 into a rotational motion, which causes a vitreous movement of the load. A cover 4 is then installed so that the screen 11 is completely immersed in the load. With this, the tapering angle of the screen I-I is chosen to be smaller in the case of ensuring a greater circulation rate of the load or greater in the case of creating greater pressure on the load. The change in the taper of the screen is carried out by axial movement of the sleeve 6 from the actuator 19. In addition, the screen 11 is rotated from the electric motor -13. To increase the intensity of processing, the direction of rotation of the screen 11 is chosen opposite to the direction of rotation of the bowl 1. During processing, the loading passes between the bowl and the screen.

11 and returns to the bowl through the hole in the center of the screen. At the end of processing, the direction and speed of rotation of the screen and the bowl 1 are set. Through the screw mechanism 16-19, the sleeve 6 moves up, the levers 10 lift up the peripheral part of the screen, making its taper angle equal to or less than the angle of the thicket. In this case, the center hole

the screen is enlarged so that the mushroom-shaped holoks 21 are completely covered with it. After that, the lid 4 is suspended from the paws 22 to the workshop crane, lowered inside the container and stops near the bowl. Then, the slide 14 descends until the screen touches the bowl and the plug 21 enters the central opening of the screen (screen in position A). The load during this time is collected in the cavity of the screen. After that, the angle of taper of the screen increases up to the stop of its peripheral chateau in the bowl, the plug 21 is firmly clamped in the central hole. Next, the lid 4 rises upward with a slowly rotating screen with a plug 21 in the central hole. Since the surface of the screen is perforated, the abrasives and liquid return to the cavity of the rotating bowl, and the machined parts remain completely empty of the screen. As the lid rises over the bowl, the screen rotation actuator 13 turns off. The cover with the screen is transferred to the discharge zone, where, by reducing the angle of the screen taper, the plug 21 is released and drops out along with the parts into the receiving container. The plug is then placed back in the center of the screen, which is filled with a new batch of the parts to be machined. A lid with a screen is transferred to a container. The speed and direction of rotation of the screen are set equal to the speed and direction of rotation of the bowl. The lid with the screen is lowered all the way with the bowl. The cap is released, which remains fixed between the protrusions in the middle of the bowl. Thereafter, a lid with a screen is placed on the container in a working position. The processing cycle is repeated.

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The positive effect from the use of the proposed design is that by changing the angle of the screen taper, you can choose the optimal technological mode. In addition, separation and unloading are greatly simplified. The safety arms 20 of the screen arm prevent the abrasive wear of the levers 10.

Thus, the device improves processing performance and expands its technological capabilities.

Claims (1)

1. A device for centrifugal processing of parts, comprising a container with a lid, the bottom of which is formed by a rotating bowl, above which