SU133206A1 - Machine for the clarification of optical parts - Google Patents

Description

In existing machines with a pneumatic suction on the spindle, used for the clarification of optical components, the necessary vacuum is created with the help of air-suction and air-feeding devices. This makes the installation very cumbersome, difficult to operate. In the proposed machine, this disadvantage is eliminated by installing an elastic diaphragm with an electromagnetic contact on its spindle, which automatically switches the machine electric motor on or off when the magnitude of the vacuum in the spindle cavity changes.

FIG. shows a general view of the machine; in fig. 2 shows two shields of the machine control panel.

All knots of the machine are mounted in one massive bed. At the front of the frame, bolts 2 secure the air spring spindle 3 carrying the cartridge 4. On the axis of the spindle, bolts 5 secure the electromagnet 6 to the frame. In the core 7 of the electromagnet a through hole is made through which the switch 9 is passed.

The switch 10 adjusts the electrical circuit for the operation of the machine, in which the fastening of the machined parts in the cartridges is performed by the method of suction from the action of the electromagnet and the spindle pneumocamera.

Switch 12 adjusts the electrical circuit for the operation of the machine, in which the electromagnet and the pneumatic chamber of the spindle do not participate in the work and the fastening of parts can only be carried out in mechanical cartridges, i.e. sliding cam (not shown).

The spindle is rotated through the cord hole belt 13 from the electric motor (not shown in the drawing).

Switch 14 is designed to prepare the motor

machine tool. Light bulb 15 signals the readiness of the machine to work, with

which parts can be sucked from

No. 133206- 2 electromagnet and pneumocamera. The light bulb 16 indicates the readiness of the LATR type autotransformer (not shown in the drawing) to carry out a smooth, stepless control of the rotational speed of the spindles on the move. The number of revolutions of the spindle is controlled by the knob / 7. The control button 18 is the only control button for starting and stopping for any type of machine operation.

After the preparation of the electrical circuit of the machine, i.e., when the switches 10, 12 and 14 are turned on, the warning lights 15 and 16 should be on, this means the machine is prepared for operation with the electromagnet and the spindle pneumocamera. If the work must be done with a mechanical fastener, i.e. the workpiece must be mounted in sliding cam cartridges, then the switch 10 must be turned off and the signal light / 5 should not be lit. Work of the machine with a pneumatic suction

When pressing the control button 18 of the magnetic attraction force, the core 7 of the electromagnet 6, resting against the stop 19, coaxes the diaphragm 20 n to the extreme upper position at the same time, in the nerves, squeezes the air out of the hypend chamber and through second, it cocks, i.e., compresses the springs 22. After this preliminary preparation, a part 11 for surface treatment is placed on the cartridge 4. When the second button is pressed again, the control button 18 turns off the electromagnet. At this time, the instantaneous force of the compressed springs 22 creates the main suction force in the spindle chamber. Part 11 is firmly attached to the chuck 4. The electric motor almost simultaneously turns on the electrical circuit, and sends the spindle 3 through the cordless strap 13 to turn the spindle 3. The knob 17, which is connected to the LATR autotransformer, sets the required spindle rotational speed.

After the surface of the part has been machined, the control button 18 is pressed. At this time, the motor is turned off with braking and the electromagnet 6 is turned on almost simultaneously via the time switch of the electroscheme, and the process already described is repeated: the part is released, and the friend is put on the cartridge, etc.

As can be seen from the above, the machine can work with fastening parts for surface treatment, both in mechanical chucks and in special chucks, in which the parts are sucked by the vacuum created in the rotating chamber of the air-spring spindle without using air-blowing and air-sucking special devices and special sealing mobile devices.

An electromagnet can be used in the machine, by force of which air is squeezed out of the spindle chamber through a non-return valve, which is a preparation for creating a vacuum, i.e., a rarefied space in the chamber. At the same time, the force of the electromagnet compresses the diaphragm springs and, after the electromagnet is turned off, the springs create an instantaneous main suction force.

In the machine tool used a rod that is passed through a hole made in the core of the electromagnet. Automatic pressing of this pin on the roller of the switch during the critical vacuum in the pneumatic chamber of the rotating spindle turns off the electric motor of the machine. Or, if there is absolutely no vacuum in the pneumatic chamber of the spindle, the motor does not turn on.

On a machine with a pneumatic suction you can handle the surfaces of parts of various shapes and dimensions: round from 4 mm to 200 mm; square, rectangular and in size, fit into a diameter of 200 mm.