Patent ID: 9726823
Date: 2017-08-08
CPC Classifications: B26D,G02B,Y10T

Claim:
1. An optical fiber cutting knife, comprising: a cutting tool post, a head cover, a flat decorative cover on top of the head cover, a lubrication coating layer on a hammer on a back of the decorative cover, a fiber placing groove, a blade guide rail, a blade fixed on the blade guide rail, a first magnet of a first polarity installed in the blade guide rail, and a second magnet of the first polarity and a third magnet of a second polarity installed on the cutting tool post, wherein the first magnet and the third magnet have a same amount of magnetic force with different polarities, and the first magnet and the second magnet have a same polarity with different amount of magnetic forces; the head cover being installed on the cutting tool post, the fiber placing groove being installed inside the cutting tool post, and the blade guide rail being placed on an outside of the cutting tool post, wherein: the first magnet moves from a location corresponding to the second magnet to a location corresponding to the third magnet to form an automatic blade-retracting mechanism to automatically reset a position of the blade guide rail, the first polarity being different from the second polarity.