GB693447A - Improvements in electrical control systems for machinery more particularly the flying shear control of metal coming from rolling mills - Google Patents

Improvements in electrical control systems for machinery more particularly the flying shear control of metal coming from rolling mills

Info

Publication number
GB693447A
GB693447A GB2178250A GB2178250A GB693447A GB 693447 A GB693447 A GB 693447A GB 2178250 A GB2178250 A GB 2178250A GB 2178250 A GB2178250 A GB 2178250A GB 693447 A GB693447 A GB 693447A
Authority
GB
United Kingdom
Prior art keywords
strip
contactor
length
integrator
speed
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
GB2178250A
Inventor
John Nightingale
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.)
Metropolitan Vickers Electrical Co Ltd
Original Assignee
Metropolitan Vickers Electrical Co 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
Application filed by Metropolitan Vickers Electrical Co Ltd filed Critical Metropolitan Vickers Electrical Co Ltd
Priority to GB2178250A priority Critical patent/GB693447A/en
Priority to DEM10532A priority patent/DE908996C/en
Priority to ES0199302A priority patent/ES199302A1/en
Publication of GB693447A publication Critical patent/GB693447A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D36/00—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut
    • B23D36/0008—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut for machines with only one cutting, sawing, or shearing devices
    • B23D36/0083—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut for machines with only one cutting, sawing, or shearing devices for cutting off of the ends of the products, e.g. cropping shears
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D36/00—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D36/00—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut
    • B23D36/0008—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut for machines with only one cutting, sawing, or shearing devices
    • B23D36/0033—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut for machines with only one cutting, sawing, or shearing devices for obtaining pieces of a predetermined length
    • B23D36/0041—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut for machines with only one cutting, sawing, or shearing devices for obtaining pieces of a predetermined length the tool moving continuously

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

693,447. Electric control systems. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. April 19, 1951 [Sept. 4, 1950], No. 21782/50. Class 40 (i) [Also in Groups XXII and XXXVII]. In apparatus for shearing moving metal strip or the like into successive measured lengths, a tachometer generator, the output of which is integrated with respect to time, is driven at a speed proportional to that of the strip, and means are provided to initiate a shearing operation and to start a new integration when the magnitude of the integrated output reaches a predetermined value corresponding to the passage of a desired length of strip. The tachometer generator may be of the A.C. or D.C. type and driven by a measuring roll which is in the path of the strip, an over-run drive rotating the measuring roll so that when it is not engaged by the strip its peripheral speed is slightly less than strip-speed, and when it is engaged it will quickly attain the proper speed. As shown, the integrating device 1D has the signal from the tachometer generator applied to it through lines TG, the required length of strip being set on dials SL. When initially cropping a strip before shearing the first measured length, a flag switch FS is operated by the leading edge of the strip and subsequently causes, after a period which may be adjustable, the substantially coincident initiation of integrator means ID and operation of relay F1C, which starts, through contactor S, acceleration of the motor driving the shears. A contactor TS ensures that the device 1D stops integrating and resets a short time after the flag-switch opens as the end of the strip passes, the contactor F1C (or an alternative contactor 11C) being energised from the device 1D so as to be re-operated at the same period before the second cut as the signal to start integrating was in advance of the first cut. Means are provided for preventing the switch FS from initiating shear operation for cuts after the first, and for stopping false operation of contactor F1C or 11C. Shear-position interlocks are also provided. Two or more integrators may be so arranged that whilst one integrator is re-setting after measuring one length, the next length is being measured by the other integrator, the integrators continuing to function in this manner. Specification 665,380, [Group XXXVII], is referred to.
GB2178250A 1950-09-04 1950-09-04 Improvements in electrical control systems for machinery more particularly the flying shear control of metal coming from rolling mills Expired GB693447A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB2178250A GB693447A (en) 1950-09-04 1950-09-04 Improvements in electrical control systems for machinery more particularly the flying shear control of metal coming from rolling mills
DEM10532A DE908996C (en) 1950-09-04 1951-08-04 Improvements in electrical control systems for machines, particularly for the control of flying shears for metal coming from mill stands
ES0199302A ES199302A1 (en) 1950-09-04 1951-08-23 AN ELECTRICAL CONTROL APPARATUS FOR MACHINERY, ESPECIALLY FOR THE CONTROL OF FLIGHT SHEARING OF METAL FROM ROLLING MACHINES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2178250A GB693447A (en) 1950-09-04 1950-09-04 Improvements in electrical control systems for machinery more particularly the flying shear control of metal coming from rolling mills

Publications (1)

Publication Number Publication Date
GB693447A true GB693447A (en) 1953-07-01

Family

ID=10168712

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2178250A Expired GB693447A (en) 1950-09-04 1950-09-04 Improvements in electrical control systems for machinery more particularly the flying shear control of metal coming from rolling mills

Country Status (3)

Country Link
DE (1) DE908996C (en)
ES (1) ES199302A1 (en)
GB (1) GB693447A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1055098B (en) * 1955-12-13 1959-04-16 Bbc Brown Boveri & Cie Control arrangement for scissor drives in roller lines, especially wire lines
DE1223448B (en) * 1956-10-24 1966-08-25 Bbc Brown Boveri & Cie Arrangement for speed control of the drive for the rotating table of a circular saw
DE1125524B (en) * 1958-07-14 1962-03-15 Licentia Gmbh Method and arrangement for eliminating the loss of path in the case of electromotive drives operated with regulated speed
DE1254222B (en) * 1962-09-29 1967-11-16 Siemens Ag Switching device for actuation of work devices, taking into account a dead time

Also Published As

Publication number Publication date
DE908996C (en) 1954-04-12
ES199302A1 (en) 1951-12-16

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