Hole saw structure
OwnerTing Lu YUinventor
Life of this patent
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Abstract
A hole saw structure, which is cooperated with a hole saw arbor for performing a perforating operation, includes a cylindrical body and a blade set. The cylindrical body has a central chamber and includes an end surface and a peripheral wall. One end portion of the peripheral wall is connected around a circumference of the end surface, the other end portion of the peripheral wall is outwardly folded and overlapped around the peripheral wall so as to form a folded portion, the folded portion includes a folded end, and an inner diameter of the cylindrical body is smaller than an outer diameter of the folded portion. The blade set is disposed on the folded portion and includes at least two cutting teeth and at least two chip discharging notches.
Claims16
A hole saw structure, which is cooperated with a hole saw arbor for performing a perforating operation, comprising:
- a cylindrical body having a central chamber and comprising:
- an end surface having a central opening for connecting to the hole saw arbor;
- a peripheral wall, wherein one end portion of the peripheral wall is connected around a circumference of the end surface, the other end portion of the peripheral wall is outwardly folded and overlapped around the peripheral wall so as to form a folded portion, the folded portion comprises a folded end, and an inner diameter of the cylindrical body is smaller than an outer diameter of the folded portion;
- and
- a blade set disposed on the folded portion and comprising:
- at least two cutting teeth separately disposed on the folded portion, wherein a blade tip of each of the at least two cutting teeth projects from the folded end, and there is an angle between a long axis of each of the at least two cutting teeth and a long axis of the cylindrical body;
- and
- at least two chip discharging notches disposed around the folded portion, wherein each of the at least two chip discharging notches is correspondingly disposed on one side of each of the at least two cutting teeth.
Dependencies are inferred from the claim text.