Machine tool
AssigneesDmg Mori Co., Ltd., Alpstool Co., Ltd.
InventorsKoji Fujimoto, Tatsuhiko Kuriya, Shuji Miyairi, Masayoshi Tanaka
Life of this patent
Estimating the term…
Abstract
A machine tool includes: a lower tool rest on which a plurality of tools are mounted; a motor provided at the lower tool rest, for rotating a rotating tool when the rotating tool is mounted on the lower tool rest; and a tool holder attached to the lower tool rest, for detachably holding the tool. The tool holder has a clamping mechanism portion operating between a clamping state of clamping the tool and an unclamping state of unclamping the tool, as a result of transmission of motive power generated at the motor. With such a configuration, the clamping mechanism portion for automatically clamping and unclamping the tool held in the tool holder on the tool rest is provided with a simple configuration.
Claims6
A machine tool comprising:
- a tool turret on which a plurality of tools are mounted;
- a tool holder, which is attached to the tool turret, for detachably holding one of the plurality of tools;
- and
- a motor provided at the tool turret for rotating the one of the plurality of tools relative to the tool turret when the one of the plurality of tools is held by the tool holder, wherein
- the tool holder has a clamping mechanism portion operating between a clamping state of clamping the one of the plurality of tools and an unclamping state of unclamping the one of the plurality of tools, as a result of transmission of motive power generated at the motor,
- the tool holder further having a clutch shaft to which rotation is input from a rotor shaft of the motor,
- the rotor shaft has an engagement groove which the clutch shaft engages,
- the tool turret has a ring member provided with an annular groove that extends circumferentially with respect to a tool turret indexing axis, and which is continuous to the engagement groove, and
- the clutch shaft is provided so as to be movable between the engagement groove and the annular groove when indexing of the tool turret is performed.
Dependencies are inferred from the claim text.