Steerable toolholder
OwnerRudolf Gafnerinventor
Life of this patent
Estimating the term…
Abstract
A tool holder for a tool drive with an outer and an inner concentric drive shaft. A first adapter is detachably held by a conventional clamping system in a receptacle of the outside drive shaft. A second adapter is concentrically mounted in the first tool receptacle of the first adapter so as to rotate with respect to the first adapter. The second adapter has a tool receptacle which can be inclined by a pivoting element. Thus, a tool can be eccentrically inserted and concentrically driven. This makes possible certain machining modes, for example the machining of a hollow shaft, since inner threads can now be turned rather than cut.
Claims4
In a tool holder (1) for use with a tool drive device, having driving means for driving one of an exterior driveshaft (2) and a concentric interior driveshaft (4), wherein the tool holder (1) has a first adapter (10) having a first concentric tool receptacle (3) which is releasably held by a clamping system (15) with a clamping element (16) in the first tool receptacle (3) of the exterior driveshaft (2), wherein in a second adapter (20) is concentrically and rotatably positioned in the first tool receptacle (3) of the first adapter (10), and the second adapter (20) has a second tool receptacle (25) seated on the first adapter (10) and deflected by a pivot element (30) about a pivot shaft (31), which is arranged eccentrically and parallel with the driveshafts (2, 4), the improvement comprising:
- the second tool receptacle (25) driven by the exterior driveshaft (2) via the first adapter (10), and means for deflecting the pivot element (30) including the second adapter (20) and a gear train (21, 22, 23, 34), and deflection means for deflecting the pivot element (30) by actuating a brief change of a revolving speed of the interior driveshaft (4) with respect to the exterior driveshaft (2).
Dependencies are inferred from the claim text.