Bearings – Linear bearing – Roller bearing
Reexamination Certificate
1999-03-05
2001-02-20
Morano, S. Joseph (Department: 3682)
Bearings
Linear bearing
Roller bearing
C384S042000, C384S049000, C384S050000, C269S073000, C269S076000, C104S118000
Reexamination Certificate
active
06190047
ABSTRACT:
CROSS-REFERENCES TO RELATED APPLICATIONS
This application claims the priority of German Patent Application Serial No. 198 10 771.4-15, filed Mar. 6, 1998, the subject matter of which is incorporated herein by reference.
BACKGROUND OF THE INVENTION
The present invention relates, in general to frameworks, and more particularly to a base beam for use in realization of a horizontal and vertical, rod-like framework for clamped attachment of workpieces to be measured.
Conventional clamping systems for attachment of workpieces in the measuring technique typically utilize in addition to base plates primarily precision-bored beams which are used for realizing a basic vertical and horizontal framework and oftentimes are of great length. These precision-bored beams are formed with a continuous raster of bores. These bores as well as the spacing between the bores are manufactured at high precision so that the overall costs of such precision-bored beams are substantial.
The provision for such expensive precision-bored beams with the plurality of precision bores, however, is frequently not required, in particular in situations where a user has a need for precision bores only at the ends or in the center of the precision-bored beams. In these situations, the provision of the other precision bores is redundant.
SUMMARY OF THE INVENTION
It is thus an object of the present invention to provide an improved framework, obviating the afore-stated drawbacks.
In particular, it is an object of the present invention to provide an improved framework of horizontal and vertical structure which can be suited to a customer's needs and is more flexible with respect to the clamping task and thus more cost-efficient, without adversely affecting a required precision.
These objects, and others which will become apparent hereinafter, are attained in accordance with the present invention by providing a base beam having a main body which is defined by a substantially square cross section and has drawn-in flanks formed centrally with a rib, whereby the base beam is complemented by a first carriage which is detachably securable on the main body for displacement longitudinally in direction of the main body, with the carriage having at least one side formed with one or more precision bores.
Suitably, a second carriage is so associated to the first carriage as to be movable transversely to the base beam, with the second carriage also having at least one side formed with one or more precision bores.
According to another feature of the present invention, a connector kit is provided which is attachable to at least one end face of the main body for coupling the base beam to a conventional precision-bored beam.
According to still another feature of the present invention, each of the first and second carriages has a bottom side of half-dovetailed configuration, with a clamping mechanism disposed in the bottom and including a swingable clamping member for cooperation with one or more screw fasteners.
Through the provision of a base beam according to the present invention, a framework can be established which can be suited to the customer's needs in a highly cost-efficient manner, e.g. for purposes of precise clamping and subsequently measuring of workpieces.
REFERENCES:
patent: 4775247 (1988-10-01), Isert
patent: 5247891 (1993-09-01), Morita
patent: 5249867 (1993-10-01), Iida
patent: 5265963 (1993-11-01), Kawaguchi
patent: 5431498 (1995-07-01), Lyon
patent: 5568982 (1996-10-01), Stoll et al.
patent: 5735214 (1998-04-01), Tsuboi
patent: 5984291 (1999-11-01), Iwata et al.
patent: 35 27 307 C2 (1986-04-01), None
Haag Jurgen
Haage Klaus
Lauer Josef
Feiereisen Henry M.
Jules Frantz F.
KOMEG Industrielle Messtechnik GmbH
Morano S. Joseph
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