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公开(公告)号：US09931700B2
公开(公告)日：2018-04-03
申请号：US15335673
申请日：2016-10-27
CPC分类号： B23B31/265 , B23B31/26 , B23B2260/034 , B23B2260/12 , B23B2260/136
摘要： A clamping device for clamping a workpiece or a tool or a tool holder to a machine component of a machine tool, including an axially movable tension rod, a clamping assembly which can be moved by the tension rod between a clamped position and a released position, a spring assembly dedicated to the tension rod for generating the clamping and draw-in force of the clamping assembly, and a releasing unit by which the clamping assembly can be moved by the tension rod against the force of the spring assembly into the released position. The spring assembly has a minimum of one spring unit with a plurality of flexible spring members disposed between a first and a second spring holder, with the first and second spring holders being secured against torsion relative to the tension rod.
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公开(公告)号：US11667002B2
公开(公告)日：2023-06-06
申请号：US17012684
申请日：2020-09-04
CPC分类号： B23Q17/005 , B23Q3/082 , B23Q11/0085 , B23Q16/001 , B23B31/265 , B23Q2703/04 , B23Q2717/00 , Y10T409/309464
摘要： A method of monitoring a tool clamping device mounted on a machine spindle, the clamping force of which tool clamping device is generated by a spring assembly which exerts a force in the direction of the clamping position on an actuating element actuating the clamping or the release of a tool or tool holder. In the method, the spring force and the displacement of the actuating element are continuously measured during the release and/or clamping of a tool or tool holder and recorded as functions of the time. These recorded functions are used to identify at least one parameter characteristic for the status of the tool clamping device. Based on the spring force and the displacement over time, a spring characteristic curve is plotted in the form of the spring force as a function of displacement, the analysis of which spring characteristic curve provides information about a number of characteristic parameters.
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公开(公告)号：US09962772B2
公开(公告)日：2018-05-08
申请号：US15335825
申请日：2016-10-27
CPC分类号： B23B31/265 , B23B31/26 , B23B2231/24 , B23B2250/12 , B23B2260/034 , B23B2260/12 , B23B2260/136
摘要： A clamping device for clamping a workpiece or a tool or a tool holder to a machine component of a machine tool, having an axially movable tension rod, a clamping assembly which can be moved by the tension rod between a clamped position and a released position, a spring assembly dedicated to the tension rod with a plurality of series-connected spring units for generating the clamping and draw-in force of the clamping assembly, and a releasing unit by which the clamping assembly can be moved by the tension rod against the force of the spring assembly into the released position. To ensure the most uniform load possible, the axial spring deflection of the spring units is limited by a stop when the spring assembly is compressed.
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公开(公告)号：US11717941B2
公开(公告)日：2023-08-08
申请号：US17391116
申请日：2021-08-02
发明人： Josef Greif , Wolfgang Bechteler , Conrad Rösch , Maximilian Horn
摘要： A tool or workpiece holder with a receiving body and a clamping device for clamping a tool or a workpiece in a receiving opening of the receiving body. The clamping device comprises a first clamping element, which can be moved in a receiving portion of the receiving body at right angles to a central axis of the receiving opening, and a second clamping element, which can be moved relative to the first clamping element at right angles to the central axis of the receiving opening by means of an actuating element. The second clamping element has conical bottom clamping surfaces on the two clamping elements for inserting the tool or workpiece into the receiving opening. An ejecting mechanism is disposed on the first clamping element for ejecting the tool or workpiece from the receiving opening when the clamping elements are moved into a disengaged position.
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公开(公告)号：US10646929B2
公开(公告)日：2020-05-12
申请号：US15938715
申请日：2018-03-28
发明人： Josef Greif , Peter Mohr , Conrad Rösch , Bartholomäus Reisacher
IPC分类号： B23B31/26 , B23B29/04 , B23B31/117 , B23B31/30
摘要： A clamping device for clamping a workpiece or a tool or, more specifically, a tool holding fixture in a machine part of a machine tool includes a tension rod slidably mounted within the machine part; a clamping set movable by the tension rod between clamped and released positions; a tension spring dedicated to the tension rod so as to generate the pull-in force of the clamping set; and a release mechanism, by which the clamping set can be moved against the force of the tension spring into the released position by the tension rod. To make possible effective clamping at optimum force, the tension spring is clamped between first and second rod parts of the tension rod. The second rod part can move relative to the first rod part, and, as the clamping set moves into the released position, is compressed on both ends by the release mechanism by moving the two rod parts in opposite directions.
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公开(公告)号：US10124414B2
公开(公告)日：2018-11-13
申请号：US15370304
申请日：2016-12-06
摘要： A clamping assembly for a clamping device for clamping of a workpiece or tool or a toolholder on machine component with a clamping cone movable axially via a tension rod and several clamping elements arranged spaced from each other in the peripheral direction on the outside of the clamping cone, which can be moved between a radially outer clamped position and a radially inner released position by axial movement of the tension rod. The clamping cone includes two parts movable opposite each other in the axial direction.
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