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AssigneeChiron-Werke GmbH & Co. KG
InventorsDirk Prust, Hans-Henning Winkler
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In the case of a machine tool which comprises at least one working spindle with a tool-holding fixture for tool holders carrying tools, and a tool changer with a gripper for the tool holders in order to transfer the tool holders between their magazine position, which is spaced apart from the tool-holding fixture, and their working position in the tool-holding fixture, a clamping system with a clamping apparatus by means of which a tool holder inserted into the tool-holding fixture is fixed is arranged in the working spindle, the clamping system additionally comprising a retaining apparatus for a tool holder situated in the tool-holding fixture. In the case of a method carried out on this machine tool, the clamping system carries out a retaining operation which temporally precedes the clamping operation in order to grasp the tool holder inserted into the tool-holding fixture before the clamping apparatus fixes the tool holder. Furthermore, an unblocking operation which temporally follows the release operation is carried out in order, after the release of the clamping apparatus, still to retain the tool holder in the tool-holding fixture until it is ejected.
A method for changing tools on a machine tool which comprises at least one working spindle with a tool-holding fixture for tool holders carrying the tools and a tool changer with a gripper for the tool holders to transfer the tool holders between their magazine position, which is spaced apart from the tool-holding fixture, and their operating position in the tool-holding fixture, and a clamping system arranged in the working spindle, the clamping system fixing a tool holder inserted into the tool-holding fixture by means of a clamping operation and releasing the tool-holder by means of a release operation, comprising the steps:
A machine tool which comprises at least one working spindle with a tool-holding fixture for tool holders carrying tools, and a tool changer with a gripper for the tool holder in order to transfer the tool holder between its magazine position, which is spaced apart from the tool-holding fixture, and its working position in the tool-holding fixture, there being provided in the working spindle a clamping system with a clamping apparatus by means of which a tool holder inserted into the tool-holding fixture is fixed,
A machine tool which comprises at least one working spindle with a tool-holding fixture for tool holders carrying tools, and a tool changer with a gripper for the tool holder in order to transfer the tool holder between its magazine position, which is spaced apart from the tool-holding fixture, and its working position in the tool-holding fixture, there being provided in the working spindle a clamping system with a clamping apparatus by means of which a tool holder inserted into the tool-holding fixture is fixed, wherein the clamping system additionally comprises a retaining apparatus for preferably positively holding a tool holder situated in the tool-holding fixture, and wherein the clamping system comprises a mandrel which, by means of its axial stroke, actuates both the clamping apparatus and the retaining apparatus.
A machine tool which comprises at least one working spindle with a tool-holding fixture for tool holders carrying tools, and a tool changer with a gripper for the tool holder in order to transfer the tool holder between its magazine position, which is spaced apart from the tool-holding fixture, and its working position in the tool-holding fixture, there being provided in the working spindle a clamping system with a clamping apparatus by means of which a tool holder inserted into the tool-holding fixture is fixed, wherein the clamping system additionally comprises a retaining apparatus for preferably positively holding a tool holder situated in the tool-holding fixture, and wherein the clamping system comprises a mandrel which, by means of its axial stroke, actuates both the clamping apparatus and the retaining apparatus, and wherein the clamping apparatus comprises first nipper segments which can be moved between a radially outer position, in which they engage in a hollow shank of the tool holder and fix the latter, and a radially inner position, in which they release the hollow shank.
Dependencies are inferred from the claim text.