GB724521A - Working metals and other materials by electrical erosion - Google Patents
Working metals and other materials by electrical erosionInfo
- Publication number
- GB724521A GB724521A GB2877251A GB2877251A GB724521A GB 724521 A GB724521 A GB 724521A GB 2877251 A GB2877251 A GB 2877251A GB 2877251 A GB2877251 A GB 2877251A GB 724521 A GB724521 A GB 724521A
- Authority
- GB
- United Kingdom
- Prior art keywords
- workpiece
- tool
- particles
- diamond
- disc
- 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
- B23H5/00—Combined machining
- B23H5/10—Electrodes specially adapted therefor or their manufacture
-
- 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
- B23H7/32—Maintaining desired spacing between electrode and workpiece, e.g. by means of particulate material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
724,521. Electrolytically shaping articles. SPARCATRON, Ltd. Dec. 2, 1952 [Dec. 7, 1951], No. 28772/51. Class 41. [Also in Group XXII] A method of working an electrically conductive workpiece by electrical erosion in which the workpiece is the anode and the tool the cathode is characterized in that the operative surface of the tool has projecting particles of a material whose electrical conductivity is lower than that of the workpiece or the tool, the said particles ensuring the desired gap between the tool and the workpiece when they are brought together and the tool rotated. A tool electrode in the form of a disc 1 has an enlarged peripheral portion 2 and is mounted on a shaft. Diamond, quartz or boron carbide particles 3 are anchored in and project from the face 4 of portion 2 of the disc and said particles lie in a common radial plane. In operation, a workpiece 5, e.g. a bit tipped with cemented tungsten carbide, is lightly pressed into contact with the diamond surface of the rotating disc, the workpiece and the tool electrode being supplied with an electric current of, e.g., 70 amperes and 20 volts. The diamond particles ensure a constant gap while the workpiece is being eroded. The gap may be 0.0002 inch or less. The swarf is removed by a dielectric liquid, e.g. transformer oil or a mixture thereof with kerosene. Where the apparatus is employed for an electrolytic method of electrical erosion the fluid employed is an electrolyte, e.g. water containing an acid. The tool electrode may be of nickel, chromium, iron or cadmium. Nickel-chrome or boron carbide is preferably used when the tool is required for polishing. The working operations referred to above include making holes and cavities in a workpiece, cutting, surface forming, lapping and polishing. The workpiece may be a ceramic or plastic material containing particles of electrically conductive material. Specification 485,565, [Group II], is referred to.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE522389D BE522389A (en) | 1951-12-07 | ||
NL85297D NL85297C (en) | 1951-12-07 | ||
GB2877251A GB724521A (en) | 1951-12-07 | 1951-12-07 | Working metals and other materials by electrical erosion |
DES31317A DE970169C (en) | 1951-12-07 | 1952-12-03 | Electrode for processing electrically conductive materials through electrical erosion |
FR1076153D FR1076153A (en) | 1951-12-07 | 1952-12-06 | Method and device for electric erosion treatment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2877251A GB724521A (en) | 1951-12-07 | 1951-12-07 | Working metals and other materials by electrical erosion |
Publications (1)
Publication Number | Publication Date |
---|---|
GB724521A true GB724521A (en) | 1955-02-23 |
Family
ID=10280905
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2877251A Expired GB724521A (en) | 1951-12-07 | 1951-12-07 | Working metals and other materials by electrical erosion |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE522389A (en) |
DE (1) | DE970169C (en) |
FR (1) | FR1076153A (en) |
GB (1) | GB724521A (en) |
NL (1) | NL85297C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2183191A (en) * | 1985-11-07 | 1987-06-03 | Nei International Research & D | Electrochemical cutting |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3046206A (en) * | 1955-02-23 | 1962-07-24 | Richard C Johnson | Electro-chemical machining system |
DE1169057B (en) * | 1960-02-09 | 1964-04-30 | Centre Nat Rech Scient | Electro-erosion electrode made from a mixture of a finely divided conductive substance and a non-metallic additive |
US4052584A (en) * | 1976-04-29 | 1977-10-04 | Bell Telephone Laboratories, Incorporated | Method and apparatus for cutting insulating material |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE801841C (en) * | 1948-04-17 | 1951-01-25 | Philips Nv | Process for electric arc welding and wrapped welding rod for practicing this process |
CH271439A (en) * | 1949-09-30 | 1950-10-31 | Boehler & Co Ag Geb | Sheathed electrode for cutting and welding under water. |
-
0
- NL NL85297D patent/NL85297C/xx active
- BE BE522389D patent/BE522389A/xx unknown
-
1951
- 1951-12-07 GB GB2877251A patent/GB724521A/en not_active Expired
-
1952
- 1952-12-03 DE DES31317A patent/DE970169C/en not_active Expired
- 1952-12-06 FR FR1076153D patent/FR1076153A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2183191A (en) * | 1985-11-07 | 1987-06-03 | Nei International Research & D | Electrochemical cutting |
GB2183191B (en) * | 1985-11-07 | 1989-09-27 | Nei International Research & D | Electrochemical cutting |
Also Published As
Publication number | Publication date |
---|---|
DE970169C (en) | 1958-08-28 |
NL85297C (en) | |
BE522389A (en) | |
FR1076153A (en) | 1954-10-25 |
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