Chuck for a tubular body
AssigneeRoehm GmbH
InventorEugen Hangleiter
Life of this patent
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Abstract
The invention relates to a tensioning device for a hollow shaft (1), comprising tensioning claws (3), which can be adjusted between a tensioned position, in which the tensioning claws (5) are engaged in the hollow shaft holder (7) having a tensioning structure (6), and an open position without engagement in the tensioning structure (6) by a tensioning head (5) guided axially displaceably in the working spindle (4). For the adjustment between the open position and the tensioned position, the tensioning claws (3) are displaceably supported in the working spindle (4) by the tensioning head (5) at the one end in a first pivot position and subsequently at the other end in a second pivot position.
Claims20
A chuck for a tubular body having a noncircular outer surface such as a polygonal tapered tubular body, comprising claws axially displaceable by a gripper head in a working spindle between a holding position in which the claws engage with a gripping formation in the tubular-body interior and an open position with the gripping formation disengaged, wherein for displacement between the open position and the holding position the claws are displaceable by the gripper head at their one end in a first pivotal movement and then at the other end in a second pivotal movement against the working spindle.
A chuck for locking a tubular body having an internal formation to a working spindle centered on an axis and also having an internal formation, the chuck comprising:
- a plurality of axially extending jaws spaced about the axis in the spindle and each having an outer end and an inner end;
- a head axially shiftable in the spindle and having an outer ridge engageable with the outer ends and an inner ridge engageable with the inner ends;
- means for axially shifting the head in the spindle when the tubular body is engaged in the spindle for first pressing the outer ends radially outward into engagement with the formation of the body and for thereafter pressing the inner ends radially outward into engagement with the formation of the working spindle.
Dependencies are inferred from the claim text.