Two-surface constrainable tool

Patent 6231282 Issued on May 15, 2001. Estimated Expiration Date:

September 17, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

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Inventors

Assignee

Toshiba Kikai Kabushiki Kaisha

Application

No. 398420 filed on 09/17/1999

US Classes:

409/234, With cutter holder408/239A, Tool adapter409/232With cutter holder

Examiners

Primary: Howell, Daniel W.

Attorney, Agent or Firm

Pillsbury Winthrop LLP

International Class

B23C 001/00

Foreign Application Priority Data

1998-09-17 JP

Abstract

A two-surface constrainable tool has two retaining surfaces by which the two-surface constrainable tool retains itself on a spindle (10) of a machine tool. The two-surface constrainable tool comprises: a bottom grip taper shank (14) having a taper part (15) having a first retaining surface and capable of being closely fitted in a taper bore (12) formed in the spindle (10), and a flange (16) provided in one end surface (16a) thereof facing the end surface (10a) of the spindle (10) with a groove (18); and a collar (20) to be interposed between the end surface (16a) of the flange (16) and the end surface (10a) of the spindle (10), consisting of two symmetrical segments (20a, 20b) having ridges (22a, 22b) to be fitted in the groove (18) of the flange (16), and a second retaining surface to be brought into close contact with the end surface (10a) of the spindle (10). The bottom grip taper shank (14) retains itself by the first and the second retaining surface on the spindle (10).