GB908195A - Improvements in and relating to methods and apparatus for machining metal by spark erosion - Google Patents

Improvements in and relating to methods and apparatus for machining metal by spark erosion

Info

Publication number
GB908195A
GB908195A GB27972/60A GB2797260A GB908195A GB 908195 A GB908195 A GB 908195A GB 27972/60 A GB27972/60 A GB 27972/60A GB 2797260 A GB2797260 A GB 2797260A GB 908195 A GB908195 A GB 908195A
Authority
GB
United Kingdom
Prior art keywords
electrode
gap
dielectric
workpiece
progressively
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
GB27972/60A
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.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Priority to GB27972/60A priority Critical patent/GB908195A/en
Priority to US124953A priority patent/US3109086A/en
Publication of GB908195A publication Critical patent/GB908195A/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
    • B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

908,195. Electro.erosion. COLE, M. July 18, 1961 [Aug. 12, 1960], No. 27972/60. Class 83 (4). In the machining of a metal workpiece 13 by spark erosion within a dielectric fluid 11, a rotary electrode 14 is used to assist flow of dielectric through the gap, and the energy of the discharges is progressively reduced whereby the machined surface is made progressively flatter and smoother. A brass or tungsten electrode 14 has on its lower surface a plurality of radial grooves 25, Fig. 2 (not shown), and is rotated through a belt drive 19 by an A.C. motor 20. For some purposes when contamination is to be avoided the electrode may be of the same metal as the workpiece. A servomotor 30 responsive to the average voltage in the gap, adjusts the electrode spacing through gearing 17. Direct current is supplied through resistor 23 to charge a capacitor 22. Both the resistance and capacitor may be variable for progressively reducing the spark energy, or they may comprise a plurality of components with selective switching. The potential of the D.C. source may also be variable. Kerosene, light transformer oil or distilled water is used for the dielectric and due to the rotation of the electrode, debris is continuously removed from the gap. The surface of the machined workpiece may be given a light mechanical or electrolytic polishing when metallographic examination is necessary. A specific example is given.
GB27972/60A 1960-08-12 1960-08-12 Improvements in and relating to methods and apparatus for machining metal by spark erosion Expired GB908195A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB27972/60A GB908195A (en) 1960-08-12 1960-08-12 Improvements in and relating to methods and apparatus for machining metal by spark erosion
US124953A US3109086A (en) 1960-08-12 1961-07-18 Methods and apparatus for machining metal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB27972/60A GB908195A (en) 1960-08-12 1960-08-12 Improvements in and relating to methods and apparatus for machining metal by spark erosion

Publications (1)

Publication Number Publication Date
GB908195A true GB908195A (en) 1962-10-17

Family

ID=10268223

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27972/60A Expired GB908195A (en) 1960-08-12 1960-08-12 Improvements in and relating to methods and apparatus for machining metal by spark erosion

Country Status (2)

Country Link
US (1) US3109086A (en)
GB (1) GB908195A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4088032A (en) * 1975-02-24 1978-05-09 Easco-Sparcatron, Inc. Servo head structure
US5041709A (en) * 1988-05-03 1991-08-20 Schneider James R Attachment device for electrical discharge machine
CN110293272A (en) * 2019-08-08 2019-10-01 安徽理工大学 A kind of electric spark and electrolysis electric discharge Compound Machining experimental rig for semicircle orifice
CN112846427A (en) * 2021-01-04 2021-05-28 张晓民 Operation method of electric spark machining guide device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1138875B (en) * 1960-09-07 1962-10-31 Aeg Circuit arrangement for a generator for the electrolytic processing of metallically conductive materials
US3396259A (en) * 1965-08-30 1968-08-06 Atomic Energy Commission Usa Method for electro-discharge machining

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH349717A (en) * 1957-03-18 1960-10-31 Agie Ag Ind Elektronik Electro-discharge grinding process and equipment for its implementation

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4088032A (en) * 1975-02-24 1978-05-09 Easco-Sparcatron, Inc. Servo head structure
US5041709A (en) * 1988-05-03 1991-08-20 Schneider James R Attachment device for electrical discharge machine
CN110293272A (en) * 2019-08-08 2019-10-01 安徽理工大学 A kind of electric spark and electrolysis electric discharge Compound Machining experimental rig for semicircle orifice
CN110293272B (en) * 2019-08-08 2024-04-26 安徽理工大学 Electric spark electrolytic discharge composite machining test device for semicircular hole
CN112846427A (en) * 2021-01-04 2021-05-28 张晓民 Operation method of electric spark machining guide device

Also Published As

Publication number Publication date
US3109086A (en) 1963-10-29

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