EQUIPMENT FOR MACHINING MICRO PINS AND MICRO HOLES BY ULTRASONICALLY ASSISTED ELECTRICAL DISCHARGE

The invention relates to an equipment fort machining micro pins and micro holes by electrical discharge with torsional and longitudinal ultrasonic vibration of the tool-electrode. According to the invention, the equipment consists of a device (36) for orienting and fixing the ultrasonic chain (38) a...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	ZMARANDACHE NICOLAE, MARINESCU MARIA ROXANA, ENE GABRIELA MARINA, ALUPEI COJOCARIU OVIDIU DORIN, GHICULESCU LIVIU DANIEL, PÎRNĂU CLAUDIU
Format:	Patent
Sprache:	eng ; rum
Schlagworte:	MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL TRANSPORTING WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OFELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKESTHE PLACE OF A TOOL
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The invention relates to an equipment fort machining micro pins and micro holes by electrical discharge with torsional and longitudinal ultrasonic vibration of the tool-electrode. According to the invention, the equipment consists of a device (36) for orienting and fixing the ultrasonic chain (38) and the device (37) for orienting the tool-electrode (22), the equipment generating the micro pins with the interior surface (22a) of a tubular tool-electrode (22) and the micro-holes with the exterior surface (22b) thereof, the tool-electrode (22) performing torsional vibrations (22c) in case of micro pins and micro holes with round cross-section and longitudinal vibrations (22d) in case of those with profiled cross-section, being assembled by metal soldering (23) at the end of an ultrasonic chain (38), four holes (20) with curved longitudinal axis being cut inside the ultrasonic concentrator (15) and supplied with dielectric liquid through some nozzles positioned in nodal plane, the ultrasonic chain (38) being positioned either vertically or inclined under an angle prescribed by means of a couple (5a-6) and blocked in the desired position with a screw cap (4) with spherical profile (4a), a bushing (24) made of an electrically insulating material with low friction coefficient guiding the tool-electrode (22) as close to the piece as possible by the concentrator penetration as close to the guiding surface as possible, through a cone (24b) and it drives the tool-electrode (22) by means of another cone (24c) with a smaller point angle, on the guiding surface (24d) of matching surface, as well as by the vertical movement of the guiding bushing (24) along a column (31), depending on the height of the piece to be machined and the blocking thereof in the desired position, by means of a handwheel (34) threading a screw (34a) which enters a longitudinal channel (31a) in the vertical column (31), thereby preventing the rotation of the bushing (24).