Tool changing – Including machine tool or component – Rotary spindle machine tool
Reexamination Certificate
2006-11-27
2008-09-23
Ross, Dana (Department: 3726)
Tool changing
Including machine tool or component
Rotary spindle machine tool
C483S028000, C483S029000, C083S013000, C083S523000, C083S669000
Reexamination Certificate
active
07427258
ABSTRACT:
There is provided a counter-rotating spindle transmission. More specifically, in one embodiment, there is provided a punching machine comprising a tool bearing configured to mate with a punching tool, a rotary/lifting drive coupled to the tool bearing to move the tool bearing axially along a tool bearing lifting axis and to rotate the tool bearing about the lifting axis, the rotary/lifting drive comprising a first motor coupled to drive a first spindle transmission coupled to the tool bearing, a second motor coupled to drive a second spindle transmission coupled to the tool bearing, and a drive controller configured to independently and simultaneously drive both the first and second motors selectively in a common rotary sense and in a contra-rotary sense, to jointly move the tool bearing both axially and rotationally.
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International Preliminary Report on Patentability from correspondence application No. PCT/EP2005/005634, mailed Nov. 29, 2006.
Ross Dana
TRUMPF Werkzeugmaschinen GmbH & Co. KG
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