Rexroth Star Gmbh

Deutsche Star Gmbh

Deutsche Star Kugelhalter Gmbh

Bosch Rexroth Mechatronics Gmbh

Werner Blaurock

Roland Greubel

Ernst Albert

Stefan Dorn

Rudolf Schlereth

Richard Kuehnlein

Wolfgang Kuellstaedt

German Duetsch

Werner Keller

Peter Blattner

Steven Worcester

Hugo Och

Thomas Wahler

Bernhard Keller

Gunter Blaurock

Hans-Georg Stender

Klaus Reichert

Ulrich Wehrhahn

G Unter Blaurock

Benno Peichl

Erich Huppman

German Dütsch

Wolfgang Küllstadt

Richard Kühnlein

A guide rail () of a linear guide unit () is provided with at least one running rail (), which has at least two races () that have different load transmission directions. According to the present invention, the running rail () is attached to the guide rail () by means of roller insertion; in the surface sections () associated with the races () of the running rail (), the guide rail () is provided with a plurality supporting ribs (); and the supporting ribs () associated with one and the same race () are aligned essentially parallel to the load transmission direction (B) of this race (). In addition or alternatively, in a section () that is not intrinsically deformed by the roller insertion of the at least one running rail (), the guide rail () has at least one additional rolled section. The present invention also relates to a method for manufacturing guide rails of this kind ().

Linear guide unit and method for manufacturing the same

A screw drive with rolling elements, optionally a ball screw drive, includes a screw spindle with a spindle axis and a double nut running on the screw spindle, with two separately formed single nuts which are substantially rigidly joined in the direction of the axis of the spindle. In order to set a desired play or bias relative to the screw spindle, the two single nuts can be turned continuously about the axis of the spindle relative to each other and fixed in any relative rotary position corresponding to the desired play or bias. According to the invention, a first of the two single nuts or an intermediate element joined thereto and arranged between the two single nuts has at least one peripheral section pressed into an associated aperture in one of the single nuts. In one embodiment, the intermediate element is an annular disk that is arranged orthogonally to the spindle axis.

Screw drive with rolling elements, and method of assembly

A nut unit ( ) for use in a ball screw drive comprises a sleeve-shaped nut body ( ) that is made of an essentially rigid material and that has an axis (A) and an inner circumferential surface ( ). A one-piece, channel-shaped, ball-guiding strip material helix ( ) is arranged on the inner circumferential surface ( ) of the nut body ( ). The strip material helix ( ) is mounted within a concavely-curved support groove ( ) formed in the inner circumferential surface ( ) of the nut body ( ). The helix ( ) has an external convexly-curved profile ( ), which is embodied with external profile flank regions ( ) and an external profile crown region ( &Prime;). The helix ( ) defines, by means of a curved internal profile ( ) facing the axis (A), a ball channel with an internal profile base region ( &Prime;) and two internal profile flank regions ( &prime;). The outer profile flank regions are essentially rigidly supported by the support profile of the support groove ( ).

Nut unit

A screw drive (,) with rolling elements, optionally a ball screw drive, includes a screw spindle with a spindle axis (S) and a double nut (,) running on the screw spindle, with two separately formed single nuts (,) which are substantially rigidly joined in the direction of the axis (S) of the spindle. In order to set a desired play or bias relative to the screw spindle, the two single nuts (,) can be turned continuously about the axis (S) of the spindle relative to each other and fixed in any relative rotary position corresponding to the desired play or bias. According to the invention, a first of the two single nuts or an intermediate element (,) joined thereto and arranged between the two single nuts, as a first alternative, is welded to one of the two single nuts or to at least one part (,) joined thereto or, as a second alternative, has at least one peripheral section pressed into an associated aperture in one of the single nuts.

A linear guiding unit comprises a guide housing (10). Inside the guide housing (10) there are provided linear ball bearings by which a carriage (40) is guided. Moreover, a pneumatic drive (56) is accommodated within the guide housing (10). The pneumatic drive comprises a cylinder cavity (58) inside the guide housing (10). The cylinder cavity (58) accommodates a piston (60). The piston (60) is movable along the cylinder cavity (58). The piston (60) is connected with the carriage (40) by a flexible rope (74). This flexible rope is sealingly passed through cover walls (66) of the cylinder cavity (58). The rope is deviated outside the cylinder cavity (58) and is fixed to the carriage (40). A cover belt (90) different from the rope covers a longitudinal opening (31) of the guide housing (10) through which the carriage can be connected with an object for common axial movement.

Linear guiding unit

Linear guiding apparatus for guiding an object

Rolls of roller bearings have in their axial middle portion a load-transmitting peripheral surface and on their axial end portions there are respective radially projecting and space-maintaining peripheral surfaces. Therefore, only the space-maintaining peripheral surfaces of adjacent rolls contact one another.

Roller bearing arrangement

In a screw drive, in particular a ball screw drive, a double nut, formed of a pair of individual nuts, is tightened on a threaded spindle and the individual nuts are secured together against relative rotation by a locking member. The locking member is secured within a radially extending recess formed in and bridging the individual nuts. The locking member can be inserted with a certain amount of play into the recess or borehole and then secured within the recess by a cement or similar material so that it cannot be displaced. Various types of locking members can be used, such as locking bolts or threaded bolts. When the locking member is connected into the recess or ball it prevents any rotation of the individual nuts relative to one another.

Double nut and method of forming the double nut

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Niederwerrn, Germany

Werner Blaurock