Tool coupling arrangement for drills and reamers
AssigneeIscar, Ltd.
InventorGil Hecht
Life of this patent
Estimating the term…
Abstract
A tool coupling arrangement for drills and reamers includes tool and shank portions with respective tool and shank axial stoppers. An at least partially cylindrical tool coupling end of the tool portion is located within a longitudinal through forward bore portion in the shank portion, and being coupled therein via an elongated coupling member located further inwards in the shank portion and comprising axially opposite member coupling and pulling ends. The forward bore portion has front and rear sub-portions and a bore recess which is located therebetween and extends radially outwardly. In a locked position, the tool axial stopper abuts the shank axial stopper. The tool coupling end abuts the front and rear sub-portions. And the member coupling end is wedged between the tool coupling end and the bore recess.
Claims19
A tool coupling arrangement (12) for drills and reamers comprising tool and shank portions (14, 16) with respective tool and shank axial stoppers (46, 48),
- an at least partially cylindrical tool coupling end (24) of the tool portion (14) being located within a longitudinal through forward bore portion (76) in the shank portion (16), and being coupled therein via an elongated coupling member (18) located further inwards in the shank portion (16) and comprising axially opposite member coupling and pulling ends (56, 58);
- wherein
- the forward bore portion (76) comprises axially-separate cylindrical front and rear sub-portions (76F, 76R) and a bore recess (80) which is located therebetween and extends radially outwardly relative to both the front and rear sub-portions (76F, 76R);
- and wherein
- in a locked position, the tool axial stopper (46) abuts the shank axial stopper (48), the tool coupling end (24) abuts the front and rear sub-portions (76F, 76R), and the member coupling end (56) abuts the tool coupling end (24) and the bore recess (80).
A drill or reamer having a forward-to-rear direction (F, R) and comprising a tool portion (14), a shank portion (16), and an elongated coupling member (18), wherein:
- the shank portion (16) comprises:
- a longitudinally extending cylindrical forward bore portion (76) comprising a radially outwardly extending bore recess (80) formed therein, and
- a shank axial stopper (48);
- the tool portion (14) comprises a cutting end (22), a tool coupling end (24) and a tool axial stopper (46);
- the elongated coupling member (18) comprises axially opposite member coupling and pulling ends (56, 58);
- the tool coupling end (24) is located within the forward bore portion (76) and the coupling member (18) is located further rearward inwards in the shank portion (16);
- in a locked position:
- the tool axial stopper (46) abuts the shank axial stopper (48);
- the tool coupling end (24) abuts the forward bore portion (76) at two axially separate areas on either side of the bore recess (80);
- no portion of the tool coupling end (24) abuts the bore recess (80);
- and
- the member coupling end (56) of the coupling member (18) abuts both the tool coupling end (24) and the bore recess (80).
Dependencies are inferred from the claim text.