GB737397A - Improvements in or relating to spark-cutting apparatus - Google Patents

Improvements in or relating to spark-cutting apparatus

Info

Publication number
GB737397A
GB737397A GB26605/52A GB2660552A GB737397A GB 737397 A GB737397 A GB 737397A GB 26605/52 A GB26605/52 A GB 26605/52A GB 2660552 A GB2660552 A GB 2660552A GB 737397 A GB737397 A GB 737397A
Authority
GB
United Kingdom
Prior art keywords
condenser
triode
source
gap
workpiece
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
GB26605/52A
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.)
Method X Co
Original Assignee
Method X Co
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 Method X Co filed Critical Method X Co
Publication of GB737397A publication Critical patent/GB737397A/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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/16—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor
    • H05K1/162—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor incorporating printed capacitors
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/03—Conductive materials
    • H05K2201/0332—Structure of the conductor
    • H05K2201/0364—Conductor shape
    • H05K2201/0367—Metallic bump or raised conductor not used as solder bump
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09—Shape and layout
    • H05K2201/09009—Substrate related
    • H05K2201/09036—Recesses or grooves in insulating substrate
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10196—Variable component, e.g. variable resistor
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
    • H05K2203/12—Using specific substances
    • H05K2203/128—Molten metals, e.g. casting thereof, or melting by heating and excluding molten solder

Landscapes

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

Abstract

737,397. Removing metal by spark discharge. METHOD X CO. Oct. 23, 1952 [Nov. 14, 1951], No. 26605/52. Class 83 (4). In apparatus for cutting a workpiece by repeated spark discharges across the gap between the work-piece and an electrode having a condenser across the gap a grid-controlled discharge tube is connected between the condenser and a source of charging current therefor, to isolate the condenser after charging thereof from the charging source until after the condenser has discharged and means are provided to render the tube conducting at a predetermined time after the condenser discharges. A condenser 2 supplied from a source 6 is connected one side to a manually adjustable electrode 32 maintained above a workpiece 22 in a dielectric liquid, e.g. kerosene or transformer oil, and the other side to the workpiece. A triode 3, e.g. a thyratron, is connected in one lead from the source 6 to the condenser in series with a pulseforming network 4 comprising a condenser 44, a resistor 46 and an inductor 42. The triode grid is connected to a delay device 5 comprising a simulated transmission line. A resistor 48 is joined between the triode grid and cathode. In operation with the condenser 2 charged and the triode deionized and non-conducting the electrode is advanced to the workpiece until the condenser discharges in a spark across the gap. The gap is deionized quickly since it is isolated from the source 6. As the condenser discharges an impulse from the device 5 is applied after a time delay to the triode grid. The triode fires and becomes conducting and the condenser 2 is charged from the source 6 through the triode. The triode is deionized by the network 4 when condenser 2 is charged.
GB26605/52A 1951-11-14 1952-10-23 Improvements in or relating to spark-cutting apparatus Expired GB737397A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US312308XA 1951-11-14 1951-11-14

Publications (1)

Publication Number Publication Date
GB737397A true GB737397A (en) 1955-09-28

Family

ID=21858302

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26605/52A Expired GB737397A (en) 1951-11-14 1952-10-23 Improvements in or relating to spark-cutting apparatus

Country Status (7)

Country Link
BE (1) BE515354A (en)
CH (1) CH312308A (en)
DE (1) DE967179C (en)
FR (1) FR1072354A (en)
GB (1) GB737397A (en)
LU (1) LU31769A1 (en)
NL (1) NL97157C (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL182871B (en) * 1952-11-21 Weelpal Ag MOBILE STORAGE AND TRANSPORT UNIT.
BE532807A (en) * 1953-10-27
NL97802C (en) * 1953-12-21
LU33282A1 (en) * 1954-01-12
DE1119430B (en) * 1954-07-27 1961-12-14 Dr Hans Heinrich Rust Circuit arrangement for spark erosion with a vibrating electrode and a storage device charged by alternating current
US3024406A (en) * 1958-04-07 1962-03-06 Elox Corp Michigan Direct current charging circuit
US3056065A (en) * 1959-06-23 1962-09-25 Elox Corp Michigan Spark machining methods and apparatus
DE1293530B (en) * 1965-03-08 1969-04-24 Krupp Gmbh Circuit arrangement for spark erosion

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB637793A (en) * 1946-09-24 1950-05-24 Boris Romanovitch Lazarenko A method of working metals and other electro-conductive materials and means for applying same

Also Published As

Publication number Publication date
LU31769A1 (en)
NL97157C (en) 1961-03-15
DE967179C (en) 1957-10-17
CH312308A (en) 1955-12-31
FR1072354A (en) 1954-09-13
BE515354A (en) 1954-08-06

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