APPARATUS FOR COMBINATION ELECTRIC-DIAMOND WORKING AT CONTINUOUS DRESSING OF GRINDING DISC Russian patent published in 2004 - IPC

FIELD: metal working, namely apparatuses for electrophysical and electrochemical working, possibly electric-abrasive grinding of materials by means of discs with electrically conducting binders.

SUBSTANCE: dressing electrode of apparatus is arranged outside working zone. It is electrically insulated from grinding disc and worked part and it is connected together with grinding disc to AC source. Additional electrode is connected to AC source in the form of transformer with three secondary windings. One ends of windings are mutually connected in common point that is connected through electric current lead to grinding disc. Free ends of windings are connected through controlled rectifiers to worked part and additional electrode respectively by their positive terminals and to dressing electrode - by negative terminal.

EFFECT: enlarged manufacturing possibilities of apparatus due to autonomous operation of circuits for continuous dressing of disc and circuit for anode dissolution of worked surface and cathode deposition of grease films onto surface of grinding disc.

1 dwg