Cutter wheel, scribing method and cutting method for fragile material substrate using the cutter wheel, and method of manufacturing cutter wheel

Cutter wheel, scribing method and cutting method for fragile material substrate using the cutter wheel, and method of manufacturing cutter wheel

  • CN 102,161,219 A
  • Filed: 02/01/2005
  • Published: 08/24/2011
  • Est. Priority Date: 02/02/2004
  • Status: Active Application
First Claim
Patent Images

1. a brittle substrate is rule with the manufacture method of break bar, described brittle substrate line break bar, its circumferential part along dish shape wheel forms the crest line portion of V font as the knife edge, roughly uniformly-spaced to form the projection of a plurality of set shapes, it is characterized in that having following steps in this crest line portion:

  • With the knife edge of dish shape wheel, with at least 1 knife edge angle θ

    1 rough lapping;

    Secondly with the front of this knife edge, grind with knife edge angle θ

    2 fine finishining different with knife edge angle θ

    1;

    AndIn the crest line portion that is formed with as the V font of the knife edge,, form a plurality of projections by this uniformly-spaced to form plurality of groove;

    The external diameter of this break bar is 1.0-2.5mm, and this projection is that the spacing with 8-35 μ

    m forms in full week of this crest line portion, and the height of this projection is 0.5-6.0 μ

    m, and this knife edge angle θ

    2 is 85-140 °

    .

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