GB948388A - Electrolytic erosion apparatus - Google Patents

Electrolytic erosion apparatus

Info

Publication number
GB948388A
GB948388A GB33155/61A GB3315561A GB948388A GB 948388 A GB948388 A GB 948388A GB 33155/61 A GB33155/61 A GB 33155/61A GB 3315561 A GB3315561 A GB 3315561A GB 948388 A GB948388 A GB 948388A
Authority
GB
United Kingdom
Prior art keywords
gap
variations
gap spacing
spacing
servo
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
GB33155/61A
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.)
Motors Liquidation Co
Original Assignee
Motors Liquidation 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 Motors Liquidation Co filed Critical Motors Liquidation Co
Publication of GB948388A publication Critical patent/GB948388A/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
    • B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
    • B23H7/14—Electric circuits specially adapted therefor, e.g. power supply
    • B23H7/18—Electric circuits specially adapted therefor, e.g. power supply for maintaining or controlling the desired spacing between electrode and workpiece
    • 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
    • B23H1/02—Electric circuits specially adapted therefor, e.g. power supply, control, preventing short circuits or other abnormal discharges

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

<PICT:0948388/C3/1> A control for an electrolytic erosion machine tool senses variations in the gap between the cutting tool and the workpiece electrodes and causes the electrodes to be moved to alter the gap spacing in response to the variations thereby maintaining a predetermined gap spacing. As shown, variations in the gap spacing between a cutting tool 10 and a workpiece 12 cause corresponding variations in the back pressure of an electrolyte fed to the gap through a flow gauge 32 and a supply conduit 28. Signals from the gauge 32 and a back pressure gauge 36 are fed to an amplifier 38 the output of which varies as the gap spacing varies. The said output is applied to a servo-amplifier 24 having as another input a signal from a reference source 40 representing the desired gap spacing. The resulting error signal output from servo-amplifier 24 controls a servo-motor, Fig. 1 (not shown) which moves the cutting tool to maintain the predetermined gap spacing. In a second embodiment, Fig. 3 (not shown) the control circuit comprises an inductor carried by one electrode and connected in one arm of a bridge energized by an alternating voltage, and a phase responsive circuit connected across the bridge which develops an error signal corresponding to variations in the gap spacing. In a third embodiment, Fig. 7 (not shown) a transducer carried by one of the electrodes is arranged to send pulse signals from the source toward the other electrode and to receive the pulse signals reflected by the other electrode, and the control system senses variations in the time interval required to send and receive the pulse signal due to changes in gap spacing from a predetermined gap so as to develop corresponding error signals. If check spacing at a plurality of points between the workpiece 12 and the tool 10 is required, each embodiment may have several gap-variation detectors together with a sampling switch and an integrating circuit to obtain an average error signal in each case.
GB33155/61A 1960-10-27 1961-09-15 Electrolytic erosion apparatus Expired GB948388A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US65398A US3228863A (en) 1960-10-27 1960-10-27 Electrolytic process and apparatus for removing stock from a conductive workpiece

Publications (1)

Publication Number Publication Date
GB948388A true GB948388A (en) 1964-02-05

Family

ID=22062441

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33155/61A Expired GB948388A (en) 1960-10-27 1961-09-15 Electrolytic erosion apparatus

Country Status (3)

Country Link
US (1) US3228863A (en)
DE (1) DE1440427A1 (en)
GB (1) GB948388A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2419798A1 (en) * 1978-03-15 1979-10-12 Erowa Ag METHOD AND DEVICE FOR CONTROL OF THE ELECTRODE OF AN ELECTRO-EROSION MACHINE
US4933868A (en) * 1986-11-07 1990-06-12 Renishaw, Plc Rotary cutting tool

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3444069A (en) * 1958-11-10 1969-05-13 Anocut Eng Co Electrolytic shaping apparatus
US3332864A (en) * 1962-12-03 1967-07-25 Gen Motors Corp Method and apparatus for electrochemical machining including servo means sensitive to a phase shift in an lc circuit for controlling the machining
US3372099A (en) * 1963-05-01 1968-03-05 John E. Clifford Electrochemical machining using a multisegmented electrode with individual current control for each segment
GB1141022A (en) * 1965-05-04 1969-01-22 Ass Eng Ltd Electrochemical machining
CH655032A5 (en) * 1982-06-30 1986-03-27 Mitsubishi Electric Corp ELECTRIC DISCHARGE MACHINE FOR ELECTRO-EROSION.
GB8524600D0 (en) * 1985-10-04 1985-11-06 Transfer Technology Ltd Working electrically conductive materials
US4995949A (en) * 1986-03-21 1991-02-26 Extrude Hone Corporation Orifice sizing using chemical, electrochemical, electrical discharge machining, plating, coating techniques
EP1695783B1 (en) * 2005-02-28 2008-04-16 Siemens Aktiengesellschaft Method for determining the position of an electrochemically drilled passage hole.
US8141523B2 (en) * 2008-09-03 2012-03-27 Petrolfree, Inc. Method and apparatus for controlling an electric motor
US8720389B2 (en) 2008-09-03 2014-05-13 Petrolfree, Inc. Method and apparatus for controlling an electric motor and an internal combustion engine

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE565765C (en) * 1929-07-24 1932-12-08 Vladimir Gusseff Method and device for the electrolytic processing of metals
US2747152A (en) * 1951-08-01 1956-05-22 Air Reduction Torch spacing control
US2826540A (en) * 1952-09-18 1958-03-11 George F Keeleric Method and apparatus for electrolytic cutting, shaping, and grinding
BE530801A (en) * 1953-09-21
US2762946A (en) * 1954-11-05 1956-09-11 Elox Corp Michigan Automatic hydraulic servo feed for electric arc metal working machines
US2939825A (en) * 1956-04-09 1960-06-07 Cleveland Twist Drill Co Sharpening, shaping and finishing of electrically conductive materials
US2933675A (en) * 1956-12-28 1960-04-19 Gen Dynamics Corp Chemical milling control
US3058895A (en) * 1958-11-10 1962-10-16 Anocut Eng Co Electrolytic shaping
US2939065A (en) * 1958-12-03 1960-05-31 Elox Corp Michigan Transistorized power feed
US2927191A (en) * 1959-02-10 1960-03-01 Elox Corp Michigan Servo power feed
NL257946A (en) * 1959-11-16 1900-01-01
NL125378C (en) * 1959-11-27
US3117919A (en) * 1961-02-10 1964-01-14 George F Keeleric Electric supply system for electrolytic grinding

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2419798A1 (en) * 1978-03-15 1979-10-12 Erowa Ag METHOD AND DEVICE FOR CONTROL OF THE ELECTRODE OF AN ELECTRO-EROSION MACHINE
US4933868A (en) * 1986-11-07 1990-06-12 Renishaw, Plc Rotary cutting tool

Also Published As

Publication number Publication date
US3228863A (en) 1966-01-11
DE1440427A1 (en) 1968-11-21

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