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5) COUNTERSINK BURRING

COUNTERSINK BURRING

OUTLINE OF FORMING

FORMING UP
FORMING DOWN

Forming process for making tube of threading for screw, and at the same time make a chamfer in the entrance part.

Used for threading for screw. Used to guide at the time of tapping.

TOOLING STRUCTURE (NC 1-1/4)

NOTE

  • 1)Please indicate the dimension of A, B and angle(C),
    when you order.
  • 2) If the gap appear between chamfered plate and burring plates,
    when joined by a countersunk screw, please use the countersink burring.
    Standard tap burring
    Countersink burring

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