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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：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：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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