SU604646A1 - Inter-electrode gap regulator - Google Patents

Description

input s silica 4. Under the action of an amplified electrical signal applied to the relay coils, relay 11 operates, closes its contacts 13, by means of which the vibration transducer 9 is connected to a power source - generator 7. Under the influence of ultrasonic frequency pulses, the vibrator transducer performs two-dimensional mechanical vibrations, in this case, the element carrying the product and in contact with the vibration transducer performs on average moving in the direction of approaching the electrode tool. After the electrodes come closer to a distance equal to the breakdown, the processing begins, and a voltage drop appears on sensor 1, the value of which depends on the size of the interelectrode gap. When the interelectrode gap reaches the optimum value, which corresponds to a certain value of the voltage drop across the sensor, is equal to the bias voltage, the input signal of the amplifier becomes equal to zero, the coil of the relay 11 de-energizes and the power supply to the converter 9 stops, which causes the product to stop moving. In the event of a short circuit that may occur due to poor evacuation of erosion products, the voltage drop across the sensor increases and becomes greater than the bias voltage, the signal to the input of the amplifier changes polarity, and the relay 12 is activated and its contacts 14 connect the converter 10

to the heptation 7, the product is removed from the itncrpvmept.

Due to the small amplitude of the coils (micrometers) and high frequency - 20 Hz and

above, it is possible to achieve a high rabbinic displacement of the electrode product at low tracking speeds, which increases the sensitivity and speed of the regulator. In turn, high-frequency vibrations improve the evacuation conditions.

Form} la invention

The regulator of the interelectrode gap of the electroerosive machine, containing the sensor of the state of the interelectrode gap, the control unit and the mechanism for moving the electrode holder, characterized in

that, in order to increase the sensitivity and speed of the regulator, a high-frequency generator was introduced into it, and the movement mechanism was implemented as at least one pair of vibration transducers located oppositely and elastically pressed to the electrode holder, the transducers being connected to the high-frequency generator through the control unit.

Information sources,

taken into account in the examination

1. Gutkin BG Automation of electrical erosion machines. L., “Mechanical Engineering, 1971, p. 137.