Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Power supply system for electric discharge machines










Image Number 2 for United States Patent #5126525.

A power supply for an electroerosion machine having a switching element which controls the machining current in the gap. The value of the current is compared with a predetermined voltage and the signal generated based on this comparison is provided to a logic gate, advantageously an "AND" gate, whose output signal is applied to the control electrode of the switching element. The power supply supresses any arcing tendency during the gap short circuit conditions and increases the total current through the gap even when gap voltage is low in order to maintain a high machining rate. Electrode consumption is reduced by using a generally step-type current waveform signal. Machining current during the discharge period may be controlled to more closely approximate a square wave so that shifting to a faster machining rate can be easily accomplished by accepting some sacrifice in electrode consumption. Preferably, two or more switching and gating devices are used to permit gap current to flow intermittently during the entire discharge period.








 
 
  Recently Added Patents
Method for drive-controlling electric machinery
Stacked microelectronic assemblies
Cable conduit
Brushless electric motor provided with rotor having intermediate magnetic pole
Vehicle hood
No-multiply digital signal processing method
Apparatus and method for detecting upper body
  Randomly Featured Patents
Reduction casting method, reduction casting apparatus and molding die using same
Clamping device for a cutting insert
Toned black offset inks exhibiting excellent chromatic characteristics
Intra-node fault recovery within a multi-stage switching architecture
Substituted 2-[2'-(5"-nitrofuryl-2")vinyl-and 4'-(5"-nitrofuryl-2"-1,3-butadieryl]quinoline-4-carboxylic acid amides and salts thereof
Push-pull-lock device for slide shaft
.beta.-catenin nuclear localized protein
Insulating housing for motor terminal
System for detecting an incorrect payload lift
Die for extruding ceramic honeycomb structural bodies