Electric heating – Metal heating – Cutting or disintegrating
Patent
1993-11-04
1995-09-26
Evans, Geoffrey S.
Electric heating
Metal heating
Cutting or disintegrating
219 6913, 219 6917, B23H 102
Patent
active
054535930
ABSTRACT:
A method for classifying electro-discharge machining wave patterns by using a delay circuit, and a method for preventing arcs by classifying the electro-discharge machining waves. The voltage or current waves which are generated during an electro-discharge machining operation are classified by using high and low reference levels. Then the signals are delayed, inverted and AND-logic-combined to obtain a monitoring signal. The voltage or current waves are sampled immediately before the off-state of the delayed and inverted pulse, thereby classifying each of the electro-discharge machining waves. Thus the voltage or current waves which are generated during an electro-discharge machining operation are classified. Then, by utilizing the result of the classification, and interrupting the EDM discharge power immediately and momentarily when a wave is classified as an arc wave, damage due to the occurrence of arcs is prevented.
REFERENCES:
patent: 4338504 (1982-07-01), Gray
patent: 4504722 (1985-03-01), Kishi et al.
patent: 4673791 (1987-06-01), Konno et al.
patent: 4700039 (1987-10-01), Konno et al.
patent: 4806719 (1989-02-01), Seerieder et al.
patent: 4892989 (1990-01-01), Itoh
patent: 5118915 (1992-06-01), Magara
patent: 5182474 (1993-01-01), Kaneko
Correlation Between Electro-Discharge Machining Data and Machining Settings, by Snoeys et al., CIRP, pp. 83-89, vol. 24, 1974.
Monitoring and Controlling the E.D.M. Process, by Bhattacharyya et al., Journal of Engineering for Industry, vol. 102, pp. 189-194, Aug. 1980.
The Effect of the Surface Roughness of the Electrode Tool on Electric Discharge Machining Conditions, by Otto et al., Soviet Engineering Research, pp. 97-101, vol. 3, No. 11.
A New EDM Adaptive Control Plan Using Self-tuning Control Algorithm, by Wemin, Proc. Mfg. Int. 1988, vol. ASME (1988).
A Data-Dependent Systems Approach to Optimal Microcomputer Control Illustrated, by EDM, by Pandit et al., Journal of Engineering for Industry,pp. 1376-142, May 1984, vol. 106.
On the Derivation and Application of a Real-Time Tool Wear Sensor in EDM, by, Dauw, Annals of the CIRP, pp. 111-116, vol. 35/Jan. 1986.
Verification of on-line Computer Control of EDM by Data Dependent Systems, by, Pandit et al., Journal of Engineering for Industry, pp. 117-121, May 1987, vol. 109.
Computer Aided Evaluation and Control of Electric Discharge Machining by Using Properties of Voltage Pulse Trains, by Cogun, pp, 237-247, ASME, ped, vol. 34 (1988).
Byung-Guk Kim
Doo-Won Kim
Ju-Yong Jeong
Seok-Yong Seo
Seung-Young O.
Evans Geoffrey S.
Korea Atomic Research Institute
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