Measuring and testing – Probe or probe mounting
Reexamination Certificate
2002-02-20
2004-07-13
Raevis, Robert (Department: 2856)
Measuring and testing
Probe or probe mounting
Reexamination Certificate
active
06761079
ABSTRACT:
Applicants claim, under 35 U.S.C. §119, the benefit of priority of the filing date of Feb. 20, 2001 of a German patent application, copy attached, Ser. No. 101 09 909.6, filed on the aforementioned date, the entire contents of which is incorporated herein by reference.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a securing arrangement for transporting and mounting a measuring system used for the determination of the position of two components, which can be moved relative to each other. The present invention further relates to such a measuring system.
2. Discussion of Related Art
Such a securing arrangement is used to fix the scanning device in a defined position (desired position) on the support body of the measuring system during the transport and mounting of the measuring system.
A securing arrangement for transporting and mounting a measuring system of the type mentioned at the outset is known from DE 199 18 654 A1. There, the measuring system includes a linearly extending measuring graduation, a support body bearing the measuring graduation, a scanning device scanning the measuring graduation, which is guided at a defined distance from the measuring graduation, and a mounting base, which is connected with the scanning device for fastening it on one of the two components which are movable in relation to each other. In particular, the two components, which are movable in relation to each other, can be the carriage and the associated bed of a machine tool. The support body with the measuring graduation on the one hand, and the mounting base with the scanning device on the other hand, are respectively fastened to one of the components of the machine tool. The securing arrangement itself has at least a base body, which can be linearly displaced along a guide track of the support body, and a guide element, which is releasably connected with the base body and interlockingly enters into the guide track of the support body, by which the base body of the securing arrangement can be clamped in place on the support body of the measuring graduation for maintaining the mounting base in a defined desired position on the support body during transport and mounting of the measuring system.
A service element in the form of an adjusting screw is used for introducing the force by which the securing arrangement can be clamped in place on the support body of the measuring graduation. Its screw head is arranged on the surface of the base body facing away from the support body and is intended to be operated in the customary manner by a tool. However, here the problem arises that at the end of the mounting of the measuring system on the machine tool the adjusting screw is often hardly accessible to a tool, for example because projecting edges of the machine tool greatly limit the available space. Access is further limited if the surface of the base body on which the screw head of the adjusting screw is arranged faces downward after the measuring system has been mounted. Thus, the release of the adjusting screw, and therefore the clamped connection between securing arrangements and the support body, which must take place at the termination of the mounting of the measuring system on a machine tool in order to release the scanning unit for a movement in relation to the support body of the measuring graduation, is made more difficult.
In a further securing arrangement of the type mentioned at the outset, known from DE 30 20 003 C2, the screw head of the adjusting screw is accessible to an operating tool from the side. However, the spatial arrangement of the adjusting screw required for this cannot be used in connection with a particularly advantageous embodiment of the clamping mechanism of the securing arrangement such as is known from DE 199 18 654 A1.
OBJECTS AND SUMMARY OF THE INVENTION
An object of the present invention is based on creating a securing arrangement of the type mentioned at the outset, whose clamped connection with the support body of a measuring graduation can be released in a simple manner, even after the measuring arrangement has been mounted on a machine tool.
This object is attained by the creation of a securing arrangement for transporting and mounting a measuring system used for the determination of the position of two components, which can be moved relative to each other. The securing arrangement includes a base body, which is linearly displaced along a displacement direction via a guide track of a support body of a measuring graduation of the measuring system and is fixed in place on the support body by clamping forces in order to maintain a mounting base that fastens a scanning device to one of the two components in a desired position in relation to the support body. A service element is provided on the base body and having an operating section for introducing and/or canceling the clamping forces, wherein the operating section of the service element laterally protrudes past a surface of the base body which faces away from the support body and is laterally bordered by a lateral edge, when the base body is fastened on the support body.
The object is also attained by the creation of a securing arrangement for transporting and mounting a measuring system used for the determination of the position of two components, which can be moved relative to each other. The securing arrangement includes a base body, which is linearly displaced along a guide track of a support body and is fixed in place on the support body by clamping forces in order to maintain said base body in a desired position in relation to the support body. A screw with knurling provided on the base body for introducing the clamping forces, wherein the knurling of the screw laterally protrudes past a surface of the base body, which faces away from the support body and is laterally bordered by a lateral edge, when the base body is fastened on the support body.
It is a further object of the present invention to provide a measuring system for determining the position of two components, which are movable in relation to each other.
This object is attained by a measuring system for determining the position of two components, which can be moved relative to each other, the measuring system including a measuring graduation extending in a measuring direction and a support body for the measuring graduation. A scanning device scans the measuring graduation, which is guided at a defined distance from the measuring graduation, and a mounting base for fastening the scanning device on one of the two components, which are movable with respect to each other. A securing arrangement including a base body, which is linearly displaced along a guide track of the support body and is fixed in place on the support body by clamping forces in order to maintain the mounting base in a desired position in relation to the support body. A service element provided on the base body and having an operating section for introducing and/or canceling the clamping forces, wherein the operating section of the service element laterally protrudes past a surface of the base body which faces away from the support body and is laterally bordered by a lateral edge, when the base body is fastened on the support body.
In accordance with this, the operating section of the service element (for example an adjusting screw) required for introducing the clamping forces at least projects laterally past the side edge of the surface of the base body of the securing arrangement facing away from the support body when the base body has been clamped in place on the support body.
The attainment of the object in accordance with the present invention has the advantage that the operating section intended for operating the service element is accessible in a simple manner when the clamped connection between the base body of the securing arrangement and the support body of the measuring graduation is to be released. The release of the clamped connection by operating the service element is considerably eased by this, in particular if there is on
Kühnhauser Stefan
Niedermeier Peter
Tondorf Sebastian
Brinks Hofer Gilson & Lione
Dr. Johannes Heidenhain GmbH
Raevis Robert
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