Reaming tool and adjusting screw for a fine adjustment mechanism, in particular for a reaming tool
AssigneeKennametal Inc.
InventorsHeinrich Georg Manner, Rene Schwarznau, Xaver Franz Spichtinger, Armin Josef Zimmermann
Life of this patent
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Abstract
A reaming tool includes a main tool body disposed about a rotational axis, a plurality of peripherally arranged cutting inserts coupled to the tool body, and a fine adjustment mechanism associated with each cutting insert. The adjustment mechanism includes an adjusting screw with a conical section that acts on the cutting insert for fine adjustment, the conical section being arranged between a first and a second cylindrical guide section. The two guide sections ensure high-precision guidance of the adjusting screw.
Claims23
A reaming tool comprising:
- a main tool body disposed about a rotation axis;
- a plurality of circumferentially arranged cutting inserts coupled to the tool body;
- a guide bore assigned to each particular cutting insert;
- and
- a fine setting mechanism assigned to each particular cutting insert, the fine setting mechanism being disposed in a guide bore and comprising a setting screw having a conical portion which rests directly against the cutting insert and acts on the cutting insert for fine setting, wherein the conical portion is arranged between a first and a second cylindrical guide portion;
- wherein the first and second cylindrical guide portions are adapted to guide the setting screw in a sliding manner within the guide bore;
- the fine setting mechanism comprising the following features (a) and (b):
- (a) the conical portion defining a cone angle which is approximately in the range from 1° to 6°;
- and
- (b) the setting screw having a screw longitudinal axis which is located within a radial plane and is arranged in a manner inclined at an inclination angle in the range from 0.5 to 5° with respect to the rotation axis;
- and
- the fine setting mechanism having a first annular groove disposed between the conical portion and the second cylindrical guide portion.
A reaming tool comprising:
- a main tool body disposed about a rotation axis;
- a plurality of circumferentially arranged cutting inserts coupled to the tool body;
- a guide bore assigned to each particular cutting insert;
- and
- a fine setting mechanism assigned to each particular cutting insert, the fine setting mechanism being disposed in a guide bore and comprising a setting screw having a conical portion which rests directly against the cutting insert and acts on the cutting insert for fine setting, wherein the conical portion is arranged between a first and a second cylindrical guide portion;
- wherein the first and second cylindrical guide portions are adapted to guide the setting screw in a sliding manner within the guide bore;
- the fine setting mechanism comprising the following features (a) and (b):
- (a) the conical portion defining a cone angle which is approximately in the range from 1° to 6°;
- and
- (b) the setting screw having a screw longitudinal axis which is located within a radial plane and is arranged in a manner inclined at an inclination angle in the range from 0.5 to 5° with respect to the rotation axis;
- wherein, in order to fix an axial position of the cutting insert, a further setting element is provided;
- and
- wherein the further setting element comprises a locating pin.
Dependencies are inferred from the claim text.