GB2018032A - Process for the separation of ferromagnetic objects from a magnet plate - Google Patents

Process for the separation of ferromagnetic objects from a magnet plate

Info

Publication number
GB2018032A
GB2018032A GB7910877A GB7910877A GB2018032A GB 2018032 A GB2018032 A GB 2018032A GB 7910877 A GB7910877 A GB 7910877A GB 7910877 A GB7910877 A GB 7910877A GB 2018032 A GB2018032 A GB 2018032A
Authority
GB
United Kingdom
Prior art keywords
separation
magnet plate
frequency
ferromagnetic objects
workpieces
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.)
Withdrawn
Application number
GB7910877A
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.)
Zumbach Electronic AG
Original Assignee
Zumbach Electronic AG
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 Zumbach Electronic AG filed Critical Zumbach Electronic AG
Publication of GB2018032A publication Critical patent/GB2018032A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/15—Devices for holding work using magnetic or electric force acting directly on the work
    • B23Q3/154—Stationary devices
    • B23Q3/1543—Stationary devices using electromagnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F13/00—Apparatus or processes for magnetising or demagnetising
    • H01F13/006—Methods and devices for demagnetising of magnetic bodies, e.g. workpieces, sheet material

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Cleaning In General (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Relay Circuits (AREA)

Abstract

In a process for the demagnetisation and mutual separation of a magnet plate and ferromagnetic objects e.g. workpieces, adhering thereto, the winding (1) of the magnet plate is fed with an alternating current of variable frequency. The frequency may be determined by an impulse generator (7) of which the output frequency increases as a function of time. A frequency in the range from 2 to several hundred Hz is necessary to effect the separation of the workpieces from the plate and the circuit of the generator and switching arrangement is described in detail (Figs 3-5) <IMAGE>
GB7910877A 1978-03-31 1979-03-28 Process for the separation of ferromagnetic objects from a magnet plate Withdrawn GB2018032A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH346378A CH627299A5 (en) 1978-03-31 1978-03-31

Publications (1)

Publication Number Publication Date
GB2018032A true GB2018032A (en) 1979-10-10

Family

ID=4256480

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7910877A Withdrawn GB2018032A (en) 1978-03-31 1979-03-28 Process for the separation of ferromagnetic objects from a magnet plate

Country Status (7)

Country Link
AU (1) AU4528079A (en)
BE (1) BE874933A (en)
CH (1) CH627299A5 (en)
DE (1) DE2912338A1 (en)
FR (1) FR2421448A1 (en)
GB (1) GB2018032A (en)
IT (1) IT1113240B (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2059290C3 (en) * 1970-12-02 1974-04-11 Klauschenz & Perrot Ohg Industrieelektronik, 6231 Schwalbach Device for clamping, releasing and demagnetizing workpieces to be clamped on an electromagnetic holding device
US3895270A (en) * 1974-04-29 1975-07-15 Western Electric Co Method of and apparatus for demagnetizing a magnetic material

Also Published As

Publication number Publication date
CH627299A5 (en) 1981-12-31
IT7921345A0 (en) 1979-03-27
AU4528079A (en) 1979-10-04
FR2421448A1 (en) 1979-10-26
BE874933A (en) 1979-07-16
DE2912338A1 (en) 1979-10-04
IT1113240B (en) 1986-01-20

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)