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(11) | EP 0 927 585 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Device for clamping a stem to the traction mandrel of a riveting tool |
(57) In a device for clamping a stem to the traction mandrel of a riveting tool, the traction
mandrel has a traction sleeve (11) loosely fitted in the enclosing sleeve (12) and
mutually secured with the enclosing sleeve against axial shifting and turning. Between
the enclosing sleeve and the peripheral recess in the traction sleeve (11) there is
a compression spring (10). The traction sleeve (11) has an inner thread, onto which
is screwed the stem (1), whose collar has at least one flattened plane on its outer
circumference corresponding to an inner peripheral surface of the adjacent part of
the enclosing sleeve (12). The device is fitted together with the traction mandrel
(13) in the nozzle (5) of the riveting tool, wherein the nozzle has a passage opening
in the area of the enclosing sleeve (12). Without the use of a tightening instrument
as for example a key, it is possible to change easily and very quickly the mandrels
for rivets in the riveting tool. |