Supports – Machinery support – Base or platform
Patent
1991-11-22
1994-03-29
Foss, J. Franklin
Supports
Machinery support
Base or platform
248638, F16M 100
Patent
active
052977706
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a supporting plate and a method of producing the same. Supporting plates are used for setting up fabrication, assembly and/or test equipment. Conventional supporting plates comprise steel plates, on which the outer contours and sizeable openings are produced by flame cutting. In order to obtain the necessary flatness and surface quality, the steel plate surfaces are machined on both sides. For fastening measures, threaded bores and through-holes are made individually, according to requirements. The steel plate rests directly on a trestle. It is being necessary for this steel plate to have a certain minimum thickness, depending on the application, for the purpose of stability. The supporting function is performed by the steel plate itself. For surface protection and for decorative reasons, a surface finish is necessary. The disadvantages of these supporting plates are that they are expensive to produce, that quick availability is ruled out due to the great amount of work involved, and that a great amount of material is necessary in order to obtain high vibration damping. Consequently, such supporting plates are very heavy.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide a supporting plate and a method of producing the same which avoids the disadvantages of the prior art.
In particular, it is an object of the present invention to provide a supporting plate which can be produced inexpensively and is quickly available and has vibration damping eight to twelve times higher than a comparable steel plate. Furthermore, in conjunction with the method of producing the plate according to the invention, the supporting plate according to the invention has great freedom from distortion, it having been possible to demonstrate a flatness of <0.5 mm over a length of 2 m.
In keeping with these objects and with others which will become apparent hereinafter, one feature of the present invention resides, briefly stated, in a supporting plate in which a framework is provided which is filled with a mineral casting in a such a way that the framework and the metal casting form a solid plate.
In accordance with the new method of producing a supporting plate, a framework is placed on a mould underlay and used as a casting mould, and the framework is filled with a mineral casting.
When the supporting plate is designed and the method is performed in accordance with the present invention it eliminates the disadvantages of the prior art and achieves the above specified objects.
In accordance with still a further feature of the present invention, struts are fitted within the framework in such a way that their surfaces terminate flush with the upper side of the plate.
Also, means for receiving fastening elements for the fabrication, assembly and/or test equipment to be set up as well as means for anchorage in the mineral casting are provided on the framework and/or on the struts. It is particularly advantageous that the framework and the struts have a profile cross-section with undercut grooves. The profile cross-section has, on the one hand, the effect that the mineral casting anchors in the undercut grooves and, on the other hand, the effect that the undercut grooves of the profile can receive fastening elements which can assume a variable position along the undercut grooves.
In accordance with still a further feature of the present invention, for the purpose of anchoring the mineral casting, additional anchoring elements, similar to the fastening elements, can be inserted into the undercut grooves.
The fastening elements can be designed as hammer head screws and/or hammer nuts in connection with standard screws.
The undercut grooves can be made as T-grooves. The plate can have one or more openings. The struts at the same time can form the boundary for one or more opening. The plate in accordance with the present invention can form the top of the table, the feet of the table being attached to the framework or the fastening insert in the
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Arleth Werner
Drexel Peter
Lange Horst-Dieter
Foss J. Franklin
Robert & Bosch GmbH
Striker Michael J.
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