Self-drilling dowel with an inclined drilling head

Details Self-drilling dowel with an inclined drilling head Self-drilling dowel with an inclined drilling head

F - Mech Eng,Light,Heat,Weapons

16

B

85/30

F16B 13/00 (2006.01)

Patent

CA 1108896

ABSTRACT OF THE DISCLOSURE A self-drilling dowel consists of a tubular-shaped member with a drilling head at one end. The drilling head is formed of a plurality of teeth each having a tip. The tip of the teeth are all disposed in a single plane inclined at an angle in the range of 4° to 9° to the axis of the tubular-shaped member. The teeth are formed by a cutter with its center located at an offset position from the axis of the tubular-shaped member. The feed line of the cutter extending through its centre can be parallel to the axis of the tubular-shaped member or it can be set angularly to the axis of the tubular-shaped member in the range of 4° to 9° or 81° to 86° depending on whether the cutter is moved generally in the axial direction or transversely to the axial direction of the tubular-shaped member.

293299

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