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US 12,377,472 B2Granted
Tool holding arrangement, thread insert, rotatable shaft and drill unit
AssigneeHusqvarna AB
InventorDavid Grennhag
Life of this patent
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AssigneeHusqvarna AB
InventorDavid Grennhag
Estimating the term…
The present disclosure relates to a tool holding arrangement (1, 1′, 1″) comprising a rotatable shaft (2, 2′, 2″) which is at least connectable to a tool driving power source (3) and comprises a first shaft thread (4, 4′). The tool holding arrangement (1, 1′, 1) comprises a thread insert (5, 5′) that comprises a first insert thread (6, 6′), adapted to engage the first shaft thread (4, 4′) so as to form a first thread arrangement (4, 6; 4′, 6′). The thread insert (5, 5′) comprises a second insert thread (7) that is adapted to engage a tool thread (8) of a tool holding device (9) that is arranged to be 2 screwed onto the second insert thread (7) so as to form a second thread arrangement (7, 8), the first thread arrangement (4, 6; 4′, 6′) having a higher pitch than the second thread arrangement (7, 8).
A tool holding arrangement comprising a rotatable shaft which is at least connectable to a drill unit and comprises a first shaft thread wherein the tool holding arrangement comprises a thread insert that comprises a first insert thread, adapted to engage the first shaft thread so as to form a first thread arrangement, and a second insert thread adapted to engage a tool thread of a tool holding device that is arranged to be screwed onto the second insert thread so as to form a second thread arrangement, the first thread arrangement having a higher pitch than the second thread arrangement, wherein the tool holding arrangement comprises an outer sleeve that is adapted to retain the thread insert in movable engagement with the rotatable shaft by being fastened to an outer surface of the rotatable shaft.
Dependencies are inferred from the claim text.