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US 2023/0219146 A1Published application
Indexable center drill structure
OwnerHsin-Tien Changinventor
Life of this patent
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Abstract
An indexable center drill structure comprises a holder, an insert, and at least two screws. The screws are locked to at least two screw holes of the holder and at least two positioning holes of the insert. Through cooperation of two positioning posts and two positioning notches of the holder and the insert, the insert is fixed and locked to an insert attachment seat of the holder in a longitudinal direction and in a transverse direction. Thus, the locking strength between the insert and the holder is increased, and the overall structure is simplified.
Claims3
An indexable center drill structure, comprising:
- a holder, having an insert attachment seat, the insert attachment seat having at least two screw holes arranged along a longitudinal direction, inner edges of two sides of the insert attachment seat having one of a pair of positioning posts and a pair of positioning notches arranged along a transverse direction, an angle being defined between the longitudinal direction and the transverse direction;
- an insert, accommodated in the insert attachment seat, the insert having at least two positioning holes corresponding to the screw holes, outer edges of two sides of the insert having the other one of the pair of positioning posts and the pair of positioning notches arranged along the transverse direction;
- and
- at least two screws, coupled to the holder and the insert;
- wherein when the insert is accommodated in the insert attachment seat, the screws are locked in the screw holes and the positioning holes, and the positioning posts are engaged in the positioning notches, so that the insert is fixed and locked to the insert attachment seat in the longitudinal direction and in the transverse direction, and a distal end of the insert extends out of the insert attachment seat.
2 more elements
Dependencies are inferred from the claim text.