SU142910A1 - Device for cooling a machining area on a grinding machine - Google Patents

Description

Devices are known for cooling the treatment zone on a grinding machine with a liquid-air mixture supplied under pressure THROUGH the pores of the grinding wheel. However, such devices do not prevent the pores of the wheel from clogging.

In the described device for preventing the clogging of the pores of the grinding wheel, a pneumatic cylinder connected to the channels is communicated to them, the pores of the circle with the feed, the liquid-air mixture by the injector. This cylinder is designed to periodically create a piston with a vacuum in the channels during reciprocating movement and thereby ensure the reverse movement of the particles of the cooling mixture.

The drawing shows the described device.

The apparatus for cooling the treatment zone on a grinding machine consists of an injector /, a pneumatic cylinder 2, a distribution valve 3, a pressure regulator 4, a fluid reservoir 5, an air distributor 6 and a spindle 7.

Compressed air from the network through the water separator 8, the oil can 9, the distribution valve C and the tee 10 through the hose enters the cavity 12 of the pneumatic cylinder 2, moving the piston 13 upwards. At the same time, the volume of the cavity 14 becomes minimal. At the same time, air from the tee 10 through the pressure regulator 4 goes into the air distributor 6, and from it through the 15 V pipeline injector I, where fluid from the tank 5 is supplied under the same pressure through the pipe 16. In the injector /, spraying of the liquid occurs a mixture which through the channel 17 of the spindle 7 and through the channels 18, 19 and 20 in the hub 21 of the grinding wheel 22 is fed into the pores of the latter. When the mixture leaves the pores of the circle 22, its expansion occurs, followed by a sharp cooling, which causes a decrease in temperature in the treatment zone.

No. 142910-2; - t f, .-

Part of the heat released during grinding is removed due to the expiration of the emulsion melts of the mixture from the pores of the circle 22.

For npfiAOTHpau enHV clogging the pores of the circle 22 by turning the handle 2c from the left to the right position, the distribution valve is switched & When this. Compressed air through the pipeline 24 enters the cavity 25 of the pneumatic cylinder 2, causing rapid mixing, piston 13 down. At the same time, with the help of the solenoid, the plug 26 turns, blocking channel 27. The vacuum formed in the cavity M in channels 17, 18, 19 and 20 causes the particles of the air-liquid mixture to reverse, which carry out fine abrasive dust and other particles from the pores 22 solid particles. To remove heavy impurities from the cavity 28, a check valve 29 serves. The switching of the crane 3 can also be performed automatically after a certain time.

The described device allows feeding the cooling mixture directly into the zone of contact of the abrasive wheel with the ground surface, improving the quality of processing, increasing the durability of the wheel by 2-3 times, eliminating the possibility of metal burning, reducing the distortion of parts and increasing productivity.

Subject invention

A device for cooling the treatment zone on a grinding machine with a liquid-air mixture supplied under pressure through the pores of the grinding wheel, characterized in that, in order to prevent the pores of the grinding wheel from clogging, a pneumatic cylinder is connected to the channels that communicate the pores of the wheel with the specified injector mixture. designed to periodically create with the reciprocating motion of its piston a vacuum in these channels and thereby ensure the periodic reverse motion of liquid particles but-air mixture.

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