Main spindle apparatus and tool holder clamp unit used therefor
AssigneeNippei Toyama Corporation
InventorsAkira Takase, Hisao Sasaki
Life of this patent
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Abstract
A main spindle apparatus has a main spindle having a through hole, a main spindle head rotatably supporting the main spindle therein, a tool holder clamp unit including an unit main body having a tool mounting hole to which a tool holder is mounted, a clamp mechanism for clamping the tool holder and a bias mechanism for biasing the clamp mechanism in a clamping state and a clamp release mechanism provided on the main spindle head side and releasing the clamping state of the clamp mechanism by operating the bias mechanism, wherein the tool holder clamp unit is mounted on the though hole of the main spindle so that the tool holder clamp unit is detachable from front side of the main spindle.
Claims17
A main spindle apparatus, comprising:
- a main spindle having a through hole in an axial direction thereof;
- a main spindle head rotatably supporting the main spindle therein;
- a tool holder clamp unit including:
- a unit main body having a tool mounting hole to which a tool holder is mounted;
- a clamp mechanism for clamping the tool holder;
- and
- a bias mechanism for biasing the clamp mechanism in a clamping state;
- and
- a clamp release mechanism provided on the main spindle head side, the clamp release mechanism releasing the clamping state of the clamp mechanism by operating the bias mechanism,
- wherein the tool holder clamp unit is mounted in the through hole of the main spindle so that the tool holder clamp unit is removable from a front side of the through hole of the main spindle,
- wherein a single step is provided inside the main spindle so as to define a small diameter portion positioned on a rear side of the main spindle and a large diameter portion positioned the front side of the main spindle,
- wherein the bias mechanism is positioned at the small diameter portion when the tool holder clamp unit is mounted in the through hole of the main spindle, and
- wherein the large diameter portion houses the unit main body and the clamp mechanism.
A main spindle apparatus, comprising:
- a main spindle having a through hole in an axial direction thereof;
- a main spindle head rotatably supporting the main spindle within the main spindle head;
- a tool holder clamp unit within the main spindle and comprising:
- a unit main body having a tool mounting hole to which a tool holder is mounted;
- a clamp mechanism for clamping the tool holder;
- and
- a force actuator that biases the clamp mechanism in a clamping state;
- and
- a clamp release mechanism provided in the main spindle and that releases the clamping state of the clamp mechanism by operating the force actuator,
- wherein the tool holder clamp unit is mounted in the through hole of the main spindle so that the tool holder clamp unit is removable from a front side of the through hole of the main spindle,
- wherein a single step is provided inside the main spindle so as to define a small diameter portion positioned on a rear side of the main spindle and a large diameter portion positioned on a front side of the main spindle,
- wherein the bias mechanism is positioned at the small diameter portion when the tool holder clamp unit is mounted in the through hole of the main spindle, and
- wherein the large diameter portion houses the unit main body and the clamp mechanism.
Dependencies are inferred from the claim text.