KR930021308A - Operation Method by Discharge Waveform Classification of Z-axis Servo Motor for Electric Discharge Machine - Google Patents

Abstract

Using the method of classifying the waveform of voltage or current wave generated during electro discharge machining (EDM) and the result, the Z-axis servomotor, The present invention relates to a method of operating by a digital method, which generates a monitoring pulse at the start and end of the ON time in a sink type EDM device, and discharges the discharge waveform to a peak value. Compared with the low potential preset from 95 percent to 99 percent of), and the low potential preset from 25 percent to 90 percent of crest, and the supervisory pulse at high potential, the circuit-opening initiator has a one-to-one correspondence to the short and arc waveforms. In the terminal, make the pulse corresponding to the open waveform and the normal waveform one to one. The servo motor is operated by one unit to widen the discharge interval.In the case of arc waveform, if 1 ~ 20 preset number occurs continuously, the servo motor is operated by one unit to widen the discharge interval, and one when open waveform occurs. When 50 to 50 preset numbers are generated continuously, the servo motor is operated by 1 unit to narrow the discharge interval, so that the z-axis servo motor connected to the discharge electrode is connected to the discharge machining purpose only by the monitoring pulse signal corresponding to the classification of the discharge waveform. Operation method according to the discharge waveform classification of the z-axis servo motor for an electric discharge machine, characterized in that for operating.

Description

Z-axis servomotor for ice field processing

Since this is an open matter, no full text was included.

1 shows a schematic discharge waveform.

3 is a logic diagram illustrating the principle of classification of discharge waveforms without modification.

4A is a logic diagram illustrating the modified discharge waveform classification principle.

FIG. 4B is a kind of FIG. 4A.

FIG. 5A shows a result of one embodiment of the present invention, which shows a current signal showing an arc state and an arc waveform detection signal which is information obtained using the present invention.

5B shows the above contents and the open waveform detection signal.

5C shows the above contents and the short waveform detection signal.

Claims (2)

Monitoring pulses are generated at the ON time initiator and the terminator in a sink type EDM device, and the discharge waveform is set to 95% to 99% of the peak peak. Compared to the low potential preset from 25 percent to 90 percent of the top and crest values, when the supervisory pulse is at high potential, a one-to-one correspondence is made for the short-circuit and arc waveforms at the open circuit initiator, and open and steady waveforms at the terminator. Create a one-to-one corresponding pulse in the case of normal waveform and leave the z-axis servo motor as it is, and in the case of short-circuit waveform, operate the servo motor one unit to widen the discharge interval and in the case of arc waveform, 1 to 20 preset number Is generated continuously, the servo motor is operated by one unit to widen the discharge interval, and when an open waveform is generated, 1 to 50 preset numbers If it occurs continuously, the servo motor is operated by one unit to narrow the discharge interval, so that the z-axis servo motor connected to the discharge electrode is operated in accordance with the discharge processing purpose with only one monitoring pulse signal corresponding to the classification of the discharge waveform. “Operation method by discharge waveform classification of z axis servo motor for electric discharge machine”. A sinking EDM device generates a monitoring pulse at the start and end of the ON time, and sets the discharge waveform to 95% to 99% of the peak peak. Compare the low potential, which is set from 25 percent to 90 percent of the peak and crest values, when the supervisory pulse is at high potential, a one-to-one correspondence to the short and arc waveforms at the opening circuit, and one-to-one correspondence to the normal waveform at the terminator. In case of the normal waveform, the Z-axis servo motor is left as it is, and in the case of the short-circuit waveform, the servo motor is operated one unit to increase the discharge interval, and in the case of the arc waveform, one to twenty preset numbers are continuously If it occurs, operate the servo motor one unit to widen the discharge interval, and at the same time, if 5 to 100 preset number is generated continuously, After the servo motor is retracted by a certain distance, the pump is operated by advancing the same distance.In the case of an open waveform, when 1 to 50 preset numbers occur continuously, the servo motor is operated by 1 unit to narrow the discharge interval. By operating the Z-axis servomotor connected to the discharge electrode in accordance with the discharge processing purpose by using only one monitoring pulse signal corresponding to the classification of the discharge waveform, the operation by the discharge waveform classification of the Z-axis servomotor for an electric discharge machine is performed. Way." ※ Note: The disclosure is based on the initial application.