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1. (WO1997017158) METHOD OF ELECTROCHEMICALLY MACHINING WORKPIECES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/017158 International Application No.: PCT/IB1996/001150
Publication Date: 15.05.1997 International Filing Date: 25.10.1996
IPC:
B23H 3/00 (2006.01) ,B23H 9/00 (2006.01) ,B23H 9/16 (2006.01) ,B26B 21/54 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
H
WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
3
Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
B PERFORMING OPERATIONS; TRANSPORTING
23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
H
WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
9
Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
B PERFORMING OPERATIONS; TRANSPORTING
23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
H
WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
9
Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
14
Making holes
16
using an electrolytic jet
B PERFORMING OPERATIONS; TRANSPORTING
26
HAND CUTTING TOOLS; CUTTING; SEVERING
B
HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
21
Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
54
Razor-blades
Applicants:
PHILIPS ELECTRONICS N.V. [NL/NL]; Groenewoudseweg 1 NL-5621 BA Eindhoven, NL
PHILIPS NORDEN AB [SE/SE]; Kottbygatan 7 Kista S-16485 Stockholm, SE (SE)
Inventors:
BLIEK, Marinus; NL
BRUSSEE, Maarten; NL
Agent:
VAN DER VEER, Johannis, L.; Internationaal Octrooibureau B.V. P.O. Box 220 NL-5600 AE Eindhoven, NL
Priority Data:
95203032.808.11.1995EP
Title (EN) METHOD OF ELECTROCHEMICALLY MACHINING WORKPIECES
(FR) PROCEDE D'USINAGE ELECTROCHIMIQUE DE PIECES
Abstract:
(EN) The invention relates to a method of providing one or more through-holes in a metal workpiece by means of an electrochemical machining apparatus (ECM apparatus). Said method is characterized in that the surface of the workpiece from which the electrode of the ECM apparatus emerges is provided with an auxiliary layer, which comprises a polymeric network composed of organic and inorganic fragments. In this manner, rounding at the boundary between the holes formed and the exit surface of the ECM electrode is precluded. A polymeric network comprising silicon oxide and zirconium oxide as well as carbon-containing fragments, which are incorporated in the polymeric network via SiC bonds, proved to be very favorable. The invention can very advantageously be used to manufacture shaving foils and shaving combs.
(FR) Procédé permettant de produire un ou plusieurs trous traversant dans une pièce métallique au moyen d'un appareil d'usinage électrochimique (appareil ECM). Ce procédé est caractérisé par le fait que la surface de la pièce en contact avec l'électrode de l'appareil ECM est munie d'une couche auxiliaire, comportant un réseau polymérique composé de fragments organiques et inorganiques. De la sorte, on évite l'émoussement à la frontière entre les trous formés et la surface de sortie de l'électrode ECM. Un réseau polymère comprenant de l'oxyde de silicium et de l'oxyde de zirconium, ainsi que des fragments contenant du carbone, incorporés dans le réseau polymère via des liaisons SiC, s'est avéré très satisfaisant. L'invention peut avec grand avantage être utilisée pour fabriquer des grilles et des couteaux de rasoir.
Designated States: JP, RU
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0801598RU02169645JPH10512504