GB1348480A - Electrolytic drilling of holes - Google Patents
Electrolytic drilling of holesInfo
- Publication number
- GB1348480A GB1348480A GB3458570A GB1348480DA GB1348480A GB 1348480 A GB1348480 A GB 1348480A GB 3458570 A GB3458570 A GB 3458570A GB 1348480D A GB1348480D A GB 1348480DA GB 1348480 A GB1348480 A GB 1348480A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- wire
- holes
- july
- electrolyte
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—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
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
- B23H7/26—Apparatus for moving or positioning electrode relatively to workpiece; Mounting of electrode
- B23H7/265—Mounting of one or more thin electrodes
Abstract
1348480 Electrolytic drilling DEFENCE SECRETARY OF STATE FOR 15 July 1971 [16 July 1970] 34585/70 Heading C7B A tool for electrolytically drilling holes e.g. 0.10 to 0.50 mm in a workpiece 16 comprises a self-supporting tube 21 of insulating material, e.g. glass, quartz or sapphire, along the uniform bore of which extends a conducting wire 20, e.g. of Pt containing 10% Rh, fixed axially relatively to the tube by a support e. g. clamp 28 so that a free end of the wire is within the tube and spaced axially (by distance 22) not less than 2 and preferably less than 20 times the tube's internal diameter, from the free open end of the tube, electrolyte e.g. 20% HNO 3 from tube 15 being supplied to the clearance between the wire connected as cathode and the bore. The tube's internal diameter and wire's diameter are preferably 2/3 and 1/5 respectively of the tube's external diameter e.g. 0.09 to 0.43 mm. A plurality of holes may be simultaneously drilled using a multiple tool Fig. 3 comprising a plurality of tubes each having a wire. The free end of the wire may be initially level with the tube's open end and electro-eroded by supplying current and electrolyte e. g. KCN to produce the required distance.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3458570 | 1970-07-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1348480A true GB1348480A (en) | 1974-03-20 |
Family
ID=10367465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3458570A Expired GB1348480A (en) | 1970-07-16 | 1970-07-16 | Electrolytic drilling of holes |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3801489A (en) |
| JP (1) | JPS5386429U (en) |
| AU (1) | AU461604B2 (en) |
| DE (1) | DE2135207A1 (en) |
| FR (1) | FR2101785A5 (en) |
| GB (1) | GB1348480A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0365195A2 (en) * | 1988-10-12 | 1990-04-25 | ROLLS-ROYCE plc | Laser machining method |
| US5062768A (en) * | 1988-12-23 | 1991-11-05 | Rolls-Royce Plc | Cooled turbomachinery components |
| CN107309511B (en) * | 2017-08-24 | 2023-06-23 | 重庆望江工业有限公司 | Electrolytic machining device for key groove at end of large shaft piece |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH560574A5 (en) * | 1973-09-11 | 1975-04-15 | Agie Ag Ind Elektronik | |
| US3981786A (en) * | 1974-12-19 | 1976-09-21 | United Technologies Corporation | ECM and EDM tooling for producing holes in airfoil trailing edges |
| DE2538653C2 (en) * | 1975-08-30 | 1982-08-12 | MTU Motoren- und Turbinen-Union München GmbH, 8000 München | Device for electrolytic fine boring |
| DE3327220C1 (en) * | 1983-07-28 | 1985-01-24 | MTU Motoren- und Turbinen-Union München GmbH, 8000 München | Electrolytic fine drilling device |
| US4769118A (en) * | 1985-12-13 | 1988-09-06 | Ae Plc | Process for the curvilinear formation of holes |
| US4988425A (en) * | 1989-11-20 | 1991-01-29 | Technology Tool Company | Electrode with both outside and inside flow of electrolyte for electrochemical machining |
| US5320721A (en) * | 1993-01-19 | 1994-06-14 | Corning Incorporated | Shaped-tube electrolytic polishing process |
| US5605639A (en) * | 1993-12-21 | 1997-02-25 | United Technologies Corporation | Method of producing diffusion holes in turbine components by a multiple piece electrode |
| DE10255455B4 (en) * | 2002-11-28 | 2004-11-18 | Mtu Aero Engines Gmbh | Device for drilling holes |
| JP5921792B1 (en) * | 2015-04-23 | 2016-05-24 | 三菱電機株式会社 | Wire electric discharge machining apparatus and initial hole machining method |
-
1970
- 1970-07-16 GB GB3458570A patent/GB1348480A/en not_active Expired
-
1971
- 1971-07-07 US US00160474A patent/US3801489A/en not_active Expired - Lifetime
- 1971-07-14 DE DE19712135207 patent/DE2135207A1/en active Pending
- 1971-07-15 AU AU31282/71A patent/AU461604B2/en not_active Expired
- 1971-07-16 FR FR7126054A patent/FR2101785A5/fr not_active Expired
-
1977
- 1977-08-16 JP JP1977109473U patent/JPS5386429U/ja active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0365195A2 (en) * | 1988-10-12 | 1990-04-25 | ROLLS-ROYCE plc | Laser machining method |
| EP0365195A3 (en) * | 1988-10-12 | 1991-04-17 | ROLLS-ROYCE plc | Laser machining method |
| US5062768A (en) * | 1988-12-23 | 1991-11-05 | Rolls-Royce Plc | Cooled turbomachinery components |
| CN107309511B (en) * | 2017-08-24 | 2023-06-23 | 重庆望江工业有限公司 | Electrolytic machining device for key groove at end of large shaft piece |
Also Published As
| Publication number | Publication date |
|---|---|
| AU461604B2 (en) | 1975-05-29 |
| AU3128271A (en) | 1973-01-18 |
| US3801489A (en) | 1974-04-02 |
| DE2135207A1 (en) | 1972-01-20 |
| FR2101785A5 (en) | 1972-03-31 |
| JPS5386429U (en) | 1978-07-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLE | Entries relating assignments, transmissions, licences in the register of patents | ||
| PE20 | Patent expired after termination of 20 years |