GB724521A - Working metals and other materials by electrical erosion - Google Patents

Working metals and other materials by electrical erosion

Info

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
Application number
GB2877251A
Inventor
Gregory Fefer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sparcatron Ltd
Original Assignee
Sparcatron Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to BE522389D priority Critical patent/BE522389A/xx
Priority to NL85297D priority patent/NL85297C/xx
Application filed by Sparcatron Ltd filed Critical Sparcatron Ltd
Priority to GB2877251A priority patent/GB724521A/en
Priority to DES31317A priority patent/DE970169C/en
Priority to FR1076153D priority patent/FR1076153A/en
Publication of GB724521A publication Critical patent/GB724521A/en
Expired legal-status Critical Current

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.
GB2877251A 1951-12-07 1951-12-07 Working metals and other materials by electrical erosion Expired GB724521A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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.

Cited By (2)

* Cited by examiner, † Cited by third party
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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