Tap holder
AssigneeSugino Machine Limited
InventorMinoru IHARA
Life of this patent
Estimating the term…
Abstract
A tap holder having a simple structure and high runout accuracy is provided. A tap holder includes: a body having a collet holder hole having an opening toward distal end; a tap collet received in the collet holder hole, the tap collet having a tap mounting hole located at a distal end portion, and a sleeve hole located at a basal end portion; a torque transmission mechanism that transmits rotation of the body to the tap collet; a first elastic body disposed between the body and the tap collet to urge the tap collet toward distal end; a sleeve disposed to the body by received in the sleeve hole to prevent the tap collet from slipping off toward distal end; and a second elastic body disposed between the sleeve and the tap collet to urge the tap collet toward basal end.
Claims20
A tap holder, comprising:
- a body having a collet holder hole having an opening toward distal end;
- a tap collet received in the collet holder hole, the tap collet configured to advance and retract, the tap collet having
- a tap mounting hole located at a distal end portion, and
- a sleeve hole located at a basal end portion;
- a torque transmission mechanism configured to transmit rotation of the body to the tap collet;
- a first elastic body disposed between the body and the tap collet, the first elastic body configured to urge the tap collet toward distal end;
- a sleeve disposed to the body by received in the sleeve hole, the sleeve configured to prevent the tap collet from slipping off toward distal end;
- and
- a second elastic body disposed between the sleeve and the tap collet, the second elastic body configured to urge the tap collet toward basal end.
Dependencies are inferred from the claim text.