(19)
(11) EP 0 356 245 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
24.07.1991 Bulletin 1991/30

(43) Date of publication A2:
28.02.1990 Bulletin 1990/09

(21) Application number: 89308630.6

(22) Date of filing: 24.08.1989
(51) International Patent Classification (IPC)5: B26D 5/08, B26D 1/28
(84) Designated Contracting States:
DE ES FR IT

(30) Priority: 26.08.1988 GB 8820301

(71) Applicant: KABEL TEKNIK LIMITED
Aldershot Hampshire GU12 4DL (GB)

(72) Inventors:
  • Booton,Alan John
    Farnham, Surrey GU9 8PS (GB)
  • Gatfield,Arthur
    Farnham, Surrey, GU9 7QL (GB)

(74) Representative: Russell-Rayner, Albert Patrick 
Business Centre Avenue One Business Park
Letchworth Garden City Hertfordshire SG6 2HB
Letchworth Garden City Hertfordshire SG6 2HB (GB)


(56) References cited: : 
   
       


    (54) Material cutting apparatus


    (57) A drive arrangement for a cutter blade, wherein operational cutting movement of the blade (11) is arranged to be derived from a servo-type motor (9) whose output is so controllable as to provide a drive output voltage/time relationship which produces a rapid initial acceleration from rest to a value which produces such angular velocity of the output shaft (10) of the motor as to establish a pretermined torque (angular momentum) in the blade (11) sufficient to cause the blade to effect a material cutting stroke and then on completion of a blade cutting stoke a rapid deceleration to bring the output shaft and thus the blade to a rest position.







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