Abstract:
A tool holder (28) is configured to mount a tool (30) to a rotatable spindle (24) of a high-precision machining center (20). Tool holder (28) includes a body member (38), a sleeve (40) positioned to lie around body member (38) and formed to include an inclined ramp (41), and a collet (42) positioned to lie around body member (38) beneath sleeve (40). Body member (38) moves axially relative to sleeve (40) to bring collet (42) into engagement with inclined ramp (41) of sleeve (40). Collet (42) slides on inclined ramp (41) and flexes radially to engage spindle (24) to stabilize tool holder (28) and tool (30) in spindle (24).
Abstract:
A tool holder that can be inserted into the working spindle of a machine tool is fitted with a cylindrical guide (11) on its shaft section (2) in the front area of the latter, for an elastically-supported cone ring (13), and has a flange section (3) which can be attached to a frontal end face (27) of the working spindle (S). In the rear area of the shaft section (2) there is provided a second cylindrical guide (12) for a second, also elastically supportable, cone ring (14). At least one of the cone rings (13, 14) is suitably fitted with a slot or is slotted.
Abstract:
The invention concerns a method and an apparatus for preparing, for the purposes of machining in order to reduce the run-out, the flange of the hub and bearing assembly designed to support the braking disc and the wheel of a motor vehicle, the assembly being of the type in which the hub (4) passes through the inner races (3, 3') of the bearing, the outer race (1) of which is without flange since it is intended to be pressfitted into a support housing of the vehicle suspension. The method and the apparatus in question are such that, when the assembly (P) is arranged on the support chuck (M) in order to machine with a machine tool the said flange (304) of the hub, using any method of the known type, the outer race (1) of the assembly is clamped by means associated with the said chuck, so as to be subjected to a radial compressive stress of a type and magnitude substantially equal to that to which the said race will be subjected when mounted in the said support housing of the suspension, in order to eliminate all the play initially present in the assembly, so that the latter may be machined for the purposes of run-out, substantially under the same conditions which exist during the final working stage.
Abstract:
A clamping device (1) has a collet (2) or a sleeve (13) for example for drill bits, milling cutters, screw taps or reamers provided with an inner coolant supply. The non-through parts (9, 11, 15a, 15b) of the radial slits (7) and/or intermediate slits (14) open at the machine side and/or of the slits (8) open at the tool side in the tool shank (5) and in the collet or taper sleeve housing (4) are arranged in such a way that they form a coolant barrier.
Abstract:
Vorliegende Erfindung liefert ein Spannsystem 1 für ein Rotationswerkzeug 70, wie beispielsweise einen Fräser oder einen Bohrer. Das Spannsystem 1 besteht aus einem Grundkörper 10, einer Spannzange 30 und einer Spannmutter 50, wobei die Spannmutter 50 das Rotationswerkzeug 70 mit Spannzange 30 innerhalb des Grundkörpers 10 kraftschlüssig verspannt. Um eine relative Drehung zwischen Grundkörper 10 und Spannzange 30 zu vermeiden, umfasst das Spannsystem 1 eine formschlüssige Verdrehsicherung, die ein Verdrehen der Spannzange 30 gegenüber dem Grundkörper 10 sperrt.
Abstract:
The invention concerns a method and an apparatus for preparing, for the purposes of machining in order to reduce the run-out, the flange of the hub and bearing assembly designed to support the braking disc and the wheel of a motor vehicle, the assembly being of the type in which the hub (4) passes through the inner races (3, 3') of the bearing, the outer race (1) of which is without flange since it is intended to be pressfitted into a support housing of the vehicle suspension. The method and the apparatus in question are such that, when the assembly (P) is arranged on the support chuck (M) in order to machine with a machine tool the said flange (304) of the hub, using any method of the known type, the outer race (1) of the assembly is clamped by means associated with the said chuck, so as to be subjected to a radial compressive stress of a type and magnitude substantially equal to that to which the said race will be subjected when mounted in the said support housing of the suspension, in order to eliminate all the play initially present in the assembly, so that the latter may be machined for the purposes of run-out, substantially under the same conditions which exist during the final working stage.
Abstract:
A collet holder for insertion into a multi-jaw chuck. The collet holder includes a multi-faceted body having a smooth bore extending therethrough for housing a standard collet and a cap nut threadably secured to the body.
Abstract:
The tool holder is arranged to receive a tool shank (50) of the tool (51) having a tapered surface. The holder comprises a body (10), a shank retaining collet (42) on the body and a nut (57) for causing the collet to grip the shank. The collet (42) has a shank engaging surface which, in use, lies substantially on the surface of a notional cone (50a) which tapers in the direction of withdrawal of the shank from the tool holder.