DE102013205024B4 - Compensating element, coordinate measuring machine and method for assembly - Google Patents

Abstract

Compensating element for mounting a component on a foundation (7), wherein the compensating element (13) comprises at least one bearing element (26) and at least one anchor element (16), wherein the anchor element (16) serves to anchor the compensating element (13) in the foundation (7), wherein the bearing element (26) can be fastened to the at least one anchor element (16), wherein the bearing element (26) allows a relative translational movement between the component and the foundation (7) in at least one spatial direction, wherein the spatial direction has at least a portion that is oriented perpendicular to a central longitudinal axis (40) of the bearing element (26), wherein the anchor element (16) can be fastened to the bearing element (26) through the bearing element (26), characterized in that the bearing element (26) has a through-bore (25), wherein the anchor element (16) can be fastened to the bearing element (26) through the through-bore (25), wherein the through bore (25) has a central longitudinal axis which corresponds to a central longitudinal axis of the bearing element (26).

Description

The invention relates to a compensating element for mounting a component on a foundation, a coordinate measuring machine and a method for mounting a component on a foundation.

From the EN 10 2010 046 927 A1 A coordinate measuring machine is known. In this coordinate measuring machine, a measuring table is supported on a foundation via height-adjustable feet. A guide beam is supported on a large number of height-adjustable feet on the foundation. Linear guides in the form of ball rail guides can be provided on the guide beam. The guide beam is used to guide the movement of a stand on which additional measuring slides can be supported.

The EP 0 919 763 B1 discloses an adjusting element for mounting a component on a foundation, comprising a height adjustment that serves to adjust the height of the component relative to the foundation, and an anchor that serves to anchor the adjusting element in a casting material in the foundation. The entire adjusting element can be mounted from the side of the component facing away from the foundation, with the adjusting element being provided for mounting in an opening in the component and the transverse dimensions of the anchor being designed such that the anchor fits through the opening.

However, such an adjusting element only allows the height of the component to be adjusted relative to the foundation.

In the EN 10 2010 046 927 A1 and the one in the EP 0 919 763 B1 The rigid mounting of the component on the foundation as described can lead to undesirable deformations of the component and/or the foundation, e.g. due to different expansions, e.g. caused by heat. This in turn can lead to undesirable forces, e.g. compressive or tensile forces, or torsional moments being introduced into the component and/or the foundation.

The EN 10 2009 019 351 A1 discloses a device for connecting at least one drive device to at least one support structure, wherein the drive device comprises at least one drive shaft rotatable about at least one first axis of rotation and at least one housing element. The device further comprises at least one spring element arranged mechanically between the housing element and the support structure, wherein the spring element has a first spring constant in at least one radial direction of the first axis of rotation, a second spring constant in at least one axial direction of the first axis of rotation and a third spring constant in a circular direction of the first axis of rotation.

The EN 10 2010 046 909 A1 discloses a machine tool with a machine bed and a tool mounted in the machine bed, wherein a position detection device is also provided for detecting a position of at least one marking element relative to at least one reference object, wherein the at least one reference object is fixed to a receiving frame and the receiving frame is at least partially mechanically decoupled from the machine bed. In this case, the receiving frame can be placed on the machine bed by means of a three-point support.

The EN 10 2006 034 455 A1 discloses a workpiece support for a machine, wherein the machine comprises a workpiece table with a support surface for supporting the workpiece, at least three bearing elements resting on a base for supporting the workpiece table on the base, wherein at least one of these bearing elements is designed to be adjustable in length in order to be able to tilt the workpiece table about at least one axis aligned parallel to the support surface and/or to be able to change the position of the workpiece table perpendicular to the support surface, and a guide which absorbs transverse forces parallel to the support surface.

The EP 1 267 458 A1 discloses a bearing base, in particular for a laser resonator, with at least two base sections and a tilting joint provided therebetween, as well as a corresponding bearing device with such bearing bases.

The EN 10 2008 036 574 A1 discloses a device for supporting an optical element, in which the optical element is held on a support structure via a plurality of anisotropic elastic members.

The DE 195 12 892 C2 discloses a position measuring device, wherein a measuring embodiment is supported in the direction of its longitudinal extension on two spaced-apart regions on the carrier body, wherein one of the support regions forms a fixing support and the other support region forms an elastic support.

The US 2,940,784 A discloses means for improved height adjustment.

The DE 12 07 714 A discloses movable connecting members or supports and in particular a novel flexible intermediate piece for Transmission of forces in an approximately straight direction.

It is necessary to fix a component in the correct position on a foundation. One possibility is to arrange the storage elements precisely on the foundation before the actual assembly of the component to be stored. To do this, it may be necessary to first drill holes in the foundation in the correct position before the component to be assembled can be stored on these storage elements.

However, the case is more problematic when the bearing elements have anchors that are to be cast in a corresponding casting material, such as a special cement, because the position of the anchors must remain stable until the casting material hardens. To achieve this, the bearing elements can be attached to the components to be supported before assembly, with the component then being positioned on the foundation in such a way that the anchors are arranged in the recesses in the foundation specifically provided for receiving the anchors. The said recesses can then be filled with the corresponding casting material. Such a process is complicated when many bearing elements are provided, especially when bearing elements are located in an inner area of the component. In this case, it may be necessary to provide corresponding channels in the foundation through which the recesses can then be filled.

The technical problem therefore arises of creating an element for mounting a component on a foundation, a coordinate measuring machine and a method for mounting a component on a foundation, which enable the component to be stored on the foundation, whereby the undesirable deformations caused by the storage and/or forces acting on the foundation or component are minimized, while at the same time assembly is simplified.

The solution to the technical problem results in particular from the objects having the features of claims 1, 7 and 9. Further advantageous embodiments emerge from the subclaims.

A compensation element is proposed for mounting a component on a foundation, in particular for mounting a guide beam of a coordinate measuring machine on a foundation. The guide beam is used to guide a movement of a movable part of the coordinate measuring machine, in particular a stand of the coordinate measuring machine.

The compensation element comprises at least one bearing element and at least one anchor element. The bearing element and the anchor element can in particular be designed as different components. The anchor element serves to anchor the compensation element in the foundation. For example, the anchor element can be arranged in a casting material that is introduced into the foundation. Alternatively, it is possible for the anchor element to be arranged in an adhesive material that is introduced into the foundation. For this purpose, the foundation can have a corresponding recess, for example a blind hole, into which the casting material or adhesive material can be introduced.

The compensation element is used to support the component on the foundation, in particular to transfer forces from the component to the foundation.

Furthermore, the bearing element can be fastened to the at least one anchor element. This means that the bearing element can be mechanically connected to the anchor element.

Furthermore, the bearing element allows a relative translational movement between the component and the foundation in at least one spatial direction, wherein the spatial direction has at least a portion that is oriented perpendicular to a central longitudinal axis of the bearing element. Preferably, the bearing element allows a relative translational movement between the component and the foundation in at least one spatial direction that is oriented perpendicular to a central longitudinal axis of the bearing element. In particular, a portion of the translational movement that is oriented perpendicular to the central longitudinal axis is thus permitted.

The spatial direction or at least the portion of the spatial direction can, for example, be oriented parallel to a surface of the foundation and/or the component. If the surface of the foundation is horizontal, this spatial direction can therefore be a horizontal direction. In particular, the spatial direction can be a horizontal direction that extends parallel to a central longitudinal axis of the component to be supported. This spatial direction is therefore different from a spatial direction along which a height is defined between the component and the foundation. The height between the component and the foundation can, for example, be defined as a distance along the central longitudinal axis of the bearing element.

Allowing here means that a relative movement, for example up to a predetermined amount, can occur between the component and the foundation, whereby the forces exerted by the compensating element on the foundation and/or on the component due to the relative movement are zero or less than a predetermined force.

Furthermore, the anchor element can be fastened to the bearing element, in particular through the bearing element. This means that at least one fastening means, e.g. a screw, for fastening or for mechanically connecting the anchor element and the bearing element can be actuated through the bearing element, for example through a bore in the bearing element, in particular along the central longitudinal axis of the bearing element.

The anchor element can be fastened to the bearing element, for example, at an anchor-side end of the bearing element. For example, the fastening means arranged at the anchor-side end of the bearing element can be actuated from an end which is arranged along the central longitudinal axis opposite the anchor-side end, out of and through the bearing element, for example through a bore in the bearing element.

In a fastened state, the bearing element and anchor element can abut one another, with the fastening means serving to connect the bearing element and anchor element. The fact that the anchor element can be fastened to the bearing element, in particular through the bearing element, does not necessarily mean that the anchor element extends into or through the bearing element or vice versa.

If the central longitudinal axis of the bearing element is oriented in a vertical direction, for example, the bearing element can be arranged spatially above the anchor element. In this case, the anchor element-side end of the bearing element corresponds to a lower end of the bearing element. The anchor element can thus be attached to the bearing element from above or from an upper side through the bearing element.

In particular, the fastening means can be actuated in such a way that the anchor element and the bearing element are mechanically connected to one another by the fastening means. The fastening means can also be actuated in such a way that the anchor element is released from the bearing element, whereby, for example, the previously described mechanical connection is released.

The proposed compensation element can be attached to the foundation via the anchor element. The compensation element or, as described in more detail below, another adjustment element of the compensation element can then be attached to the component, in particular the guide beam. This advantageously results in a relative translational movement between the component and the foundation in the previously described at least one spatial direction, whereby the resulting forces acting on the foundation and/or the component are minimized. In particular, deformations due to different thermal expansions of the component and the foundation can be avoided.

In a neutral position from foundation to component, i.e. when there is no relative translational movement between foundation and component, the central longitudinal axes of the bearing element and the anchor element are aligned. If another adjusting element is present, a central longitudinal axis of the other adjusting element can also be aligned with the central longitudinal axes of the bearing and anchor elements.

Of course, the bearing element can be designed in such a way that it allows one or more further translational movements in different spatial directions. Alternatively or cumulatively, the bearing element can be designed in such a way that it is also torsionally soft. This means that the bearing element allows a rotational movement about at least one spatial axis. Allowing here means that a relative rotation, for example up to a predetermined amount, can take place between the component and the foundation, whereby the forces and moments exerted on the foundation and/or on the component by the compensation element due to the rotation are zero or less than a predetermined force/moment. For example, the foundation can rotate relative to the component if the foundation is heated, for example, or is exposed to vibrations, for example due to traffic.

The ability to attach the bearing element to the anchor element through the bearing element advantageously enables simple assembly, e.g. through a corresponding opening in the component. This design also enables the bearing element to be easily detached from the anchor element at a later date or, as explained in more detail below, rotated, i.e. aligned, relative to the anchor element.

According to the invention, the bearing element has a through hole. This through hole has a central longitudinal axis, which corresponds to the central longitudinal axis of the bearing element explained above. This continuous bore advantageously enables the previously described actuation of the at least one fastening means through the bearing element. In particular, the central bore can have a predetermined minimum diameter. This can, for example, be larger than a maximum external diameter of an actuating means, for example a screwdriver, by means of which the fastening means can be actuated.

In a further embodiment, the bearing element can be fastened to the anchor element so that it can rotate about the central longitudinal axis of the bearing element. In this case, the bearing element and the anchor element are mechanically connected to one another, e.g. via the fastening means explained above, but the bearing element can still rotate about the central longitudinal axis of the bearing element. In this case, the bearing element can be mechanically fastened to the anchor element in such a way that it can only rotate about the central longitudinal axis, with the fastening not allowing any further rotational movement or any further translational movement.

For example, the bearing element, e.g. the previously mentioned fastening means, can be positively connected to the anchor element in such a way that it can only rotate about its central longitudinal axis.

It is possible that the bearing element and the anchor element are rotatably attached to one another in a first fastening type, as explained above. In this case, the bearing element can be attached to the anchor element so that it can rotate about a central longitudinal axis of the bearing or anchor element. Furthermore, in a further fastening type, the bearing element can be rigidly attached to the anchor element. This means that the fastening in the further fastening type does not allow any translational or rotational movement of the bearing element relative to the anchor element.

In particular, the bearing element, e.g. in the first fastening type, can be rotatably fastened to the fastening means, wherein the fastening means is rigidly fastened to the anchor element.

This advantageously results in the bearing element being rotatable relative to the anchor element, particularly in the first fastening type explained above. This allows the bearing element to be aligned with a desired angular position or orientation. This advantageously allows the at least one spatial direction in which the bearing element allows the relative translational movement explained above to be aligned in the direction of a desired, permissible relative movement between the component and the foundation. For example, the at least one spatial direction can be aligned by rotating the bearing element relative to the anchor element in such a way that the at least one spatial direction runs parallel to a longitudinal axis of the component, in particular the guide beam, or has a portion running parallel to the longitudinal axis.

In a further embodiment, the bearing element has or forms at least one slot or at least one tapered region. The slot here refers to a taper of a cross section of the bearing element. An area of the tapered cross section can form a hinge element, in particular a so-called film hinge, which enables the partial bodies of the bearing element forming the slot to rotate or tilt relative to one another. This advantageously allows the previously explained translational movement to be permitted as easily as possible.

The bearing element preferably has a plurality of slots or a plurality of tapered regions, wherein the slots or tapered regions can be arranged in planes parallel to one another, which can be oriented perpendicular to the central longitudinal axis, for example. Each tapering of the cross section of the bearing element caused by a slot thus forms a hinge element, which enables the partial bodies of the bearing element forming the slot to rotate or twist relative to one another.

The bearing element preferably also has two regions with a tapered cross-section, which can be arranged offset from one another, for example, along the central longitudinal axis. These each form a hinge element and thus enable rotation or tilting. These two tapered regions can advantageously be used to form a pendulum support element which allows a relative translational movement between the foundation and the component without forces resulting from the relative translational movement being introduced into the foundation or component.

In a further embodiment, the bearing element has four partial bodies arranged one above the other along the central longitudinal axis of the bearing element, wherein the partial bodies are each connected via at least one connecting web. The connecting web can represent the previously explained area with a tapered cross section. In particular, the previously explained slots can be provided between the partial bodies. be arranged, with adjacent partial bodies forming the slots, but still being connected via the at least one connecting web. The connecting web has a smaller width in a cross-sectional plane than the partial bodies connected by it.

In particular, the connecting webs can serve as hinge elements, in particular as film hinges.

Furthermore, the connecting webs between a first and a second partial body and a third and a fourth partial body extend in a first direction parallel to one another, wherein the connecting web between the second and the third partial body extends in a direction perpendicular to the first direction.

The first direction can be oriented perpendicular to the central longitudinal axis of the bearing element. The direction in which the connecting web extends between the second and the third partial body can also be perpendicular to the central longitudinal axis of the bearing element.

The parallel connecting webs can thus advantageously form a pendulum support element, via which the component can be connected to the foundation. This pendulum support element can advantageously allow a relative translational movement between the component and the foundation in the spatial direction explained above. In particular, it is possible for the component designed as a guide beam to expand due to heating, for example, whereby the relative translational movement between the guide beam and the foundation caused by the expansion is permitted by the proposed bearing element.

The middle connecting bridge, i.e. the connecting bridge between the second and the third partial body, advantageously allows a torsion about a rotation axis that runs parallel to the spatial direction explained above. The rotation axis thus corresponds to an axis that is oriented parallel to the direction of the relative translational movement that is permitted by the parallel connecting bridges.

In a preferred embodiment, the bearing element is attached to the anchor element by means of a differential thread screw. The differential thread screw has two thread sections, whereby the two thread sections have the same thread direction but different thread pitches. A thread diameter of the two thread sections can be different.

By using a differential thread screw, the bearing element can be attached to the anchor element in a way that saves as much space as possible. In particular, the use of the differential thread screw allows the attachment in the previously explained attachment types, namely a rotatable attachment of the bearing element to the anchor element as well as a rigid attachment of the bearing element to the anchor element.

In a further embodiment, the compensation element additionally comprises an adjusting element which has a height adjustment for adjusting the height of the component relative to the foundation. Such an adjusting element is shown in the EP 0 919 763 B1 described. The height adjustment of the adjusting element can have an external thread extending in the longitudinal direction of the adjusting element, which can correspond to the longitudinal direction of the bearing element. Furthermore, the height adjustment can be connected to the bearing element via a threaded rod. The threaded rod can extend through a central hole in the adjusting element into the central hole in the compensation element or the bearing element.

By using an adjusting element, a height adjustment, i.e. an adjustment of the distance between the component and the foundation along the central longitudinal axis, can be carried out in an advantageous manner.

Also proposed is a coordinate measuring machine with a guide element, in particular a guide beam, and a compensation element, which is designed according to one of the previously described embodiments. The guide element is mounted on a foundation via the compensation element or by means of the compensation element, wherein the anchor element of the compensation element is anchored in the foundation.

According to the invention, the bearing element allows a relative translational movement between the guide element and the foundation in at least one spatial direction, wherein the spatial direction has at least a portion that is oriented perpendicular to a central longitudinal axis of the bearing element of the compensation element. Furthermore, the anchor element, as previously explained, can be fastened to the bearing element through the bearing element.

Thus, a coordinate measuring machine is advantageously provided in which undesirable deformations and/or forces in the foundation or guide element are minimized by the provision of a compensating element. With the proposed coordinate measuring machine, after mounting the guide element on the foundation, an alignment, ie a rotation of the bearing element about its central longitudinal axis, or a release of the bearing element from the anchor element, e.g. for disassembly, can also be carried out.

In a preferred embodiment, the bearing element can be fastened to the anchor element from the side of the guide element facing away from the foundation. The bearing element can also be detachable from the anchor element from the side of the guide element facing away from the foundation. In particular, the bearing element can be fastened to the anchor element from the side of the guide element facing away from the foundation in the first and further fastening methods explained above.

This means that even when assembled, the bearing element can be rotated relative to the anchor element, especially in the first fastening type.

Furthermore, the bearing element can be mounted on the anchor element from the side of the guide element facing away from the foundation. For this purpose, the guide element can have an opening. Dimensions, in particular a diameter, of the opening can be designed such that the anchor element and the bearing element fit through the opening. For this purpose, maximum diameters of the anchor element and the compensation element can be smaller than the diameter of the opening. Of course, the coordinate measuring machine can also have an adjusting element, whereby the adjusting element is also dimensioned such that it fits through the opening. In particular, a maximum diameter of the adjusting element can be smaller than the diameter of the opening.

In particular, the opening in the guide element can have a base-side fastening hole with an internal thread, wherein the previously explained height adjustment of the adjusting element has an adjusting screw with an external thread that interacts with the internal thread of the fastening hole.

Furthermore, the anchor element can have a cross-sectional area that varies over its entire length. This advantageously enables a strong form fit with the casting material or adhesive material, which can withstand both tension and compression.

Furthermore, the height adjustment can have a clamping device by means of which the adjusting screw can be spread in a stable position into the internal thread of the guide element.

The grouting material can be a swelling cement.

The guide element can also have guide holes for positioning pins. The guide holes can be arranged, for example, next to the previously explained base-side fastening hole of the guide element. In this case, the compensating element, in particular the bearing element, can also have corresponding openings, for example openings designed as blind holes. Central longitudinal axes of the guide holes can run parallel to the central longitudinal axis of the bearing element. This allows positioning pins to be guided through the guide holes of the guide element. The bearing element can also be rotated in such a way that the positioning pins protruding through the guide holes of the guide element can be introduced into the guide holes of the compensating element. This advantageously allows a desired alignment of the bearing element to be mechanically fixed. This advantageously facilitates the setting of a desired alignment.

A method for fastening a component to a foundation is also proposed. In this case, an anchor element of a compensation element according to one of the previously described embodiments is introduced into a foundation. Furthermore, a bearing element of the compensation element is fastened to the anchor element in such a way that the bearing element of the compensation element allows a relative translational movement between the component and the foundation in at least one spatial direction, wherein the spatial direction has at least a portion that is oriented perpendicular to a central longitudinal axis of the bearing element. Furthermore, the bearing element can be rotated into a desired orientation relative to the anchor element, wherein the bearing element is then rigidly fastened to the anchor element. For this purpose, the bearing element can be rotated about its central longitudinal axis in a first step and rigidly fastened to the anchor element in a second step.

For example, a fastening means can be arranged between the bearing element and the anchor element, wherein the fastening means can be introduced through the bearing element, for example through a central bore of the bearing element and/or can be actuated in such a way that in a first fastening type a mechanical connection is established between the bearing element and the anchor element, wherein the Bearing element can still be rotated about its central longitudinal axis relative to the anchor element. Furthermore, the fastening element can be operated in such a way that the bearing element is rigidly connected to the anchor element.

This advantageously results in a simple, in particular easy-to-use, fastening of a component to the foundation, wherein the previously explained relative translational movement is permitted to minimize undesirable deformations and/or forces.

• 1 einen Querschnitt durch ein Koordinatenmessgerät,
• 2 eine perspektivische Ansicht eines Führungsbalkens,
• 3 einen Längsschnitt durch einen gelagerten Führungsbalken,
• 4 einen Längsschnitt durch einen gelagerten Führungsbalken in einem ersten Verfahrensschritt,
• 5 einen Längsschnitt durch einen zu lagernden Befestigungsbalken in einem zweiten Verfahrensschritt,
• 6 einen Längsschnitt durch einen zu lagernden Befestigungsbalken in einem dritten Verfahrensschritt,
• 7 einen Längsschnitt durch einen gelagerten Führungsbalken in einem vierten Verfahrensschritt,
• 8 eine perspektivische Ansicht eines Ausgleichselements,
• 9 eine perspektivische Ansicht eines Lagerelements,
• 10 eine perspektivische Ansicht eines weiteren Ausgleichselements,
• 11 eine perspektivische Ansicht eines weiteren Lagerelements, und
• 12 einen Querschnitt durch einen weiteren, gelagerten Führungsbalken.

The invention is explained in more detail using an embodiment. The figures show:

• 1 a cross-section through a coordinate measuring machine,
• 2 a perspective view of a guide bar,
• 3 a longitudinal section through a mounted guide beam,
• 4 a longitudinal section through a mounted guide beam in a first process step,
• 5 a longitudinal section through a fastening beam to be stored in a second process step,
• 6 a longitudinal section through a fastening beam to be stored in a third process step,
• 7 a longitudinal section through a mounted guide beam in a fourth process step,
• 8th a perspective view of a compensating element,
• 9 a perspective view of a bearing element,
• 10 a perspective view of another compensation element,
• 11 a perspective view of another bearing element, and
• 12 a cross-section through another, supported guide beam.

In the following, the same reference symbols designate elements with the same or similar technical features.

In 1 a coordinate measuring machine 1 is shown. The coordinate measuring machine 1 comprises a measuring table 6 and a mechanism 12, on which a sensor 4 (shown only schematically here) is movably mounted in three coordinate directions x, y, z. The mechanism 12 comprises a stand 2, which is mounted on a guide beam 8 so that it can be moved horizontally along the measuring table 6. The guide beam 8 is located below cover plates 9, 11. The stand 2 is driven by a drive (not shown), which is also located below the cover plates 9, 11, in a first horizontal direction (x-direction), which is oriented into the plane of the drawing and which is oriented parallel to a central longitudinal axis of the guide beam 8. A cross slide 10 is mounted so that it can be moved vertically (z-direction) along the stand 2. A measuring arm 3 is again mounted along this cross slide 10 so that it can be moved in a further horizontal direction (y-direction). Both the cross slide 10 and the measuring arm 3 are driven by drives that are not shown. The directions of movement of the stand 2, the cross slide 10 and the measuring arm 3 are each perpendicular to the other two directions of movement, so that there is a direction of movement in each of the coordinate directions x, y, z. The coordinate measuring machine 1 is integrated into a base 5. A foundation 7 is also shown. The guide beam 8 is connected to the base 5 by a compensation element 13 (see 2 ) and two adjusting elements 14a, 14b are mounted in a so-called three-point bearing on the foundation 7.

In 2 is a perspective view of the 1 shown guide beam 8 with the compensation element 13 and the adjustment elements 14a, 14b. It can be seen that both the compensation element 13 and the adjustment elements 14a, 14b form the mounting points of the three-point bearing. The adjustment elements 14a, 14b form fixed mounting points, whereby the guide beam 8 is attached to the foundation 7 (see 1 ) is fixed in such a way that only a movement in the vertical direction and no other translational and rotational movement is possible or is permitted by the adjusting elements 14a, 14b.

By means of the adjusting elements 14a, 14b, which are also in the EP 0 919 763 B1 described, only a height adjustment of the guide beam 8 relative to the foundation 7 is possible, whereby the height adjustment refers to an adjustment of a distance in the vertical direction (z-direction). The compensation element 13 forms a flexible installation point. This flexible installation point allows in particular a relative translational movement of the guide beam 8 in the previously explained first horizontal direction (x-direction), i.e. along a central longitudinal axis of the guide beam 8, relative to the foundation 7. In particular, a movement of the guide beam 8 in the x-direction due to thermally induced expansion relative to the Foundation 7 without undesirable deformations and/or undesirable forces or moments occurring in the guide beam 8 and/or in the foundation 7.

In 3 a longitudinal section through a guide beam 8 is shown. The foundation 7 has recesses 15, which are created, for example, by a so-called corrugated casing pipe, which was introduced into the foundation 7 before the foundation 7 was completed. Such corrugated casing pipes are usually cylindrical pipes made of sheet metal or plastic, which are closed on one side, with the surface of the pipe being corrugated so that the corrugated casing pipe can be easily cast into the foundation and secured. Such corrugated casing pipes are standard elements in the construction industry and can be purchased, for example, from building supplies stores. Also shown is the compensation element 13 and an adjusting element 14a.

As explained in more detail below, the compensation element 13 comprises an anchor element 16. The adjustment element 14a also comprises an anchor element 17. The anchor elements 16, 17 are arranged in the recesses 15, whereby grouting mortar 18 was also introduced into the recesses 15 of the foundation 7. In the area of the adjustment element 14a, a wooden frame 19, for example glued on, is also shown, by means of which a grouting height can be increased. The recesses 15 can of course also be subsequently drilled and then roughened.

The guide bar 8 has a first opening 20 through which an adjusting element 14 of the compensating element 13 can be introduced through the guide bar 8 into a base-side fastening hole 21 of the guide bar 8. In the area of the adjusting element 14a, the guide bar has a further opening 22 and a further base-side fastening hole 23. Through this opening 22 and fastening hole 23, as shown in the EP 0 919 763 B1 described, the adjusting element 14a is mounted from the side of the guide beam 8 facing away from the foundation 7. The adjusting element 14a is designed in such a way that it fits through the additional fastening hole 23 on the base.

The anchor element 16 of the compensation element 13 can also be designed such that it fits through the base-side fastening hole 21 of the guide beam 8. For this purpose, a maximum diameter of the anchor element 16 of the compensation element 13 can be smaller than a diameter of the base-side fastening hole 21.

Through the opening 20, a central hole 24 of the adjusting element 14 (see e.g. 7 ) and a central bore 25 of a bearing element 26 of the compensation element 13, the bearing element 26 can be released from the anchor element 16 even after the grout 18 has hardened, for example in order to align the bearing element 26. This is explained in more detail below.

The anchor element 16 and the bearing element 26 are mechanically connected via a differential thread screw 27.

The embodiment shown also allows the bearing element 26 or the entire compensating element 13, which comprises the adjusting element 14, the bearing element 26 and the anchor element 16, to be introduced, e.g., from the side of the guide beam 8 facing away from the foundation 7, in order to support the guide beam 8 on the foundation 7.

In 4 a longitudinal section of the guide beam 8 and the foundation 7 is shown in a first process step. Before starting the grouting work, it may be necessary to arrange the guide beam 8 above the foundation 7, e.g. with the help of adjustable feet (not shown) or wooden supports (not shown) that are arranged between the guide beam 8 and the foundation 7. The anchor element 16 is introduced into the still liquid grouting mortar 18. For this purpose, an adjusting element 14 is connected to the anchor element 16. The adjusting element 14 consists of a threaded sleeve 28 that has an external thread in a threaded section 29. The adjusting element 14 also comprises an expansion sleeve 30 that is arranged at least partially within the threaded sleeve 28. The adjusting element 14 also comprises a spherical disk 31 and a conical socket 32. The above-mentioned components are assembled into a unit by means of a screw 33, which extends through central holes in the conical socket 32, the spherical disk 31, the expansion sleeve 30, a spacer disk 35 and a sleeve 36 into an internal thread 34 of the anchor element 16. This unit is introduced from above through the opening 20 of the guide beam 8 and through the base-side fastening hole 21 of the guide beam 8 into the recess 15.

In 5 is a longitudinal section through the guide beam 8 and the foundation 7 in a second process step. After the grout 18 has hardened, the 4 shown screw 33 is loosened and the adjusting element 14 as well as the spacer 35 and the sleeve 36 is removed. A differential thread screw 27 is then screwed into the internal thread 34 of the anchor element 16, which can be an M20 thread, for example. The differential thread screw 27 has a first threaded section 37 that can be screwed into the internal thread of the anchor element 16. The differential thread screw 27 also has a second threaded section 38 that has a thread with a pitch that is different to the pitch of the first threaded section 37. The differential thread screw 27 has a hexagon hole 39. The differential thread screw 27 can be produced, for example, by reworking a hexagon socket screw by cutting the further threaded section 38, e.g. with a pitch of an M30 screw, onto a jacket surface of the screw head.

In 6 a longitudinal section through the guide beam 8 and the foundation 7 is shown in a third process step. Here, a bearing element 26 with a central bore 25 has been screwed onto the differential thread screw 27, in particular the further threaded section 38. For this purpose, an anchor element-side end of the central bore 25 of the bearing element 26 has a corresponding internal thread. Also shown is a central longitudinal axis 40 of the bearing element, which corresponds to a central longitudinal axis of the anchor element 16, the base-side fastening bore 21 and the opening 20 of the guide beam 8. The bearing element 26 is described below, in particular with reference to 8th and 9 , explained in more detail. In order to align the bearing element 26, i.e. to set a desired angular position of the bearing element 26 in relation to the central longitudinal axis 40, the differential thread screw 27 can be rotated by a predetermined angle, for example by 360° (one revolution), such that it is unscrewed from the internal thread 34 of the anchor element 16. During this rotation, the bearing element 26 is locked. This means that the bearing element 26 does not rotate when the differential thread screw 27 is rotated by the predetermined angle, i.e. has a constant angular position. The bearing element 26 can then be rotated to a desired angular position. This rotation can, for example, take place in a predetermined direction of rotation, for example in a mathematically negative sense around the central longitudinal axis 40 if a direction of the central longitudinal axis 40 is oriented towards the guide beam 8. Furthermore, this rotation can be limited to a maximum rotation. After the bearing element 26 has been rotated about the central longitudinal axis 40, the differential thread screw 27 can then be rotated such that it is screwed back into the internal thread 34 of the anchor element 16. During this rotation, the bearing element 26 can again be locked.

Alternatively, the differential thread screw 27 can be screwed into the anchor element-side internal thread of the central bore 25 of the bearing element 26, preferably until the differential thread screw 27 stops. The differential thread screw 27 stops, for example, when the second threaded section 38 is arranged completely within the internal thread. The unit comprising the bearing element 26 and differential thread screw 27 can then be screwed into the anchor element 16, e.g. also until it stops. The unit can then be unscrewed from the anchor element 16 until a desired angular position is reached. As a rule, the maximum necessary rotation to reach the desired angular position is limited to half a turn. The differential thread screw 27 can then be rotated through the central bore 25, for example with a suitable screwdriver, in such a way that the bearing element 26 is tightened to the anchor element 16 and is thus rigidly connected to it.

The actuation, in particular the rotation, of the differential thread screw 27 can be carried out, for example, with a suitably long hexagon socket tool, whereby the hexagon socket tool is inserted from above through the central bore 25 through the bearing element 26 into the hexagon hole 39. The rotation of the bearing element 26 can be carried out, for example, with an open-end wrench on the surfaces SW explained in more detail below (see in particular 8th ) or with a pin at radially mounted pin holes 41 (see also 8th ) take place.

The hexagon socket tool can therefore be inserted into the central bore 25 through an opening which is opposite the anchor element-side opening of the central bore 25.

In 7 A longitudinal section through the guide beam 8 and the foundation 7 is shown in a fourth process step. Here, as explained in the explanations to 4 described, the adjusting element 14 has been screwed through the opening 20 of the guide beam 8 into the base-side fastening hole 21. Here, it is shown that the spacer disk 35 is arranged between the bearing element 26 and the adjusting element 14. The adjusting element 14 is mechanically connected to the bearing element 26 via a threaded rod 45. A nut 42 is screwed onto the threaded rod 45, whereby the nut 42 exerts mechanical pressure on the spherical disk 31 and the conical socket 32 via a disk 43. As a result, the expansion sleeve 30 is radially displaced relative to the central longitudinal axis 40. spread outwards, whereby the threaded section 29 of the threaded sleeve 28 is pressed against the internal thread of the base-side fastening bore 21 and thus the adjusting element 14 is clamped to the guide beam 8.

In 8th is a perspective view of a compensation element 13 braced on a foundation 8. Shown here is a part of a threaded sleeve 28, which is screwed into the base-side fastening hole 21 of the guide beam 8. Also shown is a spacer disk 35, which is arranged between the threaded sleeve 28 and the compensation element 13. The compensation element 13 comprises a bearing element 26 and an anchor element 16, which, as in eg 7 shown, are mechanically attached to each other. Here, it is shown that the bearing element 26 has four in the direction of a central longitudinal axis 40 (see 7 ) partial bodies TK1, TK2, TK3, TK4 arranged one above the other. The first partial body TK1 is connected to the second partial body TK2 via a first connecting web VS1. The second partial body TK2 is also connected to the third partial body TK3 via a second connecting web VS2 and the third partial body TK3 is connected to the fourth partial body TK4 via a third connecting web VS3. Here, it is shown that the compensating element 13 is fastened to the foundation 8 in such a way that the second connecting web VS2 extends in the first horizontal direction, which corresponds to a longitudinal direction (x-direction) of the guide beam 8. The first and third connecting webs VS1, VS3 extend in the further horizontal direction (y-direction), which corresponds to a transverse direction (y-direction) of the guide beam 8. Here, the connecting webs VS1, VS2, VS3 are located along the central longitudinal axis 40 in different, spaced-apart and parallel planes that are oriented perpendicular to the central longitudinal axis 40.

In a cross-sectional plane that is also oriented perpendicular to the central longitudinal axis 40, the first partial body TK1 has a circular cross-section with two flattened edges. This provides flat surfaces SW on a side wall of the first partial body TK1. This makes it possible to use an open-end wrench to grip the first partial body TK1 so that the bearing element 26 can be rotated about the central longitudinal axis 40. Also shown is a pin hole 41, the axis of symmetry of which runs perpendicular to the central longitudinal axis 40 in a plane that is oriented perpendicular to the central longitudinal axis 40. The pin hole 41 can be designed as a blind hole. For example, a pin can be inserted into the pin hole 41, after which the bearing element 26 can be rotated about the central longitudinal axis 40 by actuating the pin.

In 9 is a perspective view of a bearing element 26. As in 8th As already explained, the bearing element 26 comprises a first partial body TK1, which has flat surfaces SW on a side wall of the first partial body TK1. The bearing element 26 further comprises a second partial body TK2, a third partial body TK3 and a fourth partial body TK4. Also shown are the 8th already explained connecting webs VS1, VS2, VS3. The connecting webs VS1, VS2, VS3 form hinge elements around which the partial bodies TK1, ..., TK4 can be tilted against each other. Since a cross section of the bearing element 26 tapers in the area of the connecting webs VS1, VS2, VS3, slots S are formed between adjacent partial bodies TK1, TK2, TK3, TK4.

By forming connecting webs VS1, VS2, VS3 and the slots S, the bearing element 26 can be mounted in a guide beam 8 and foundation 7 (see e.g. 7 ) fixed state form a so-called pendulum support element. If the bearing element 26 as eg in 8th shown attached to the guide beam 8 and aligned, then when the guide beam 8 moves relative to the foundation 7 in or against the first horizontal direction (x-direction), no force is transmitted between the foundation 7 and the guide beam 8 in the x-direction. The second connecting web VS2 advantageously enables rotation about the first horizontal direction (x-direction) without moments being transmitted between the guide beam 8 and the foundation 7. In particular, the bearing element 26 can only transmit compressive or tensile forces, i.e. forces directed along the central longitudinal axis 40 between the guide beam 8 and the foundation 7. In particular, the bearing element 26 therefore does not transmit any transverse forces defined in relation to the central longitudinal axis 40 and no moments.

In 9 Further alignment holes 46 are shown, the axes of symmetry of which run parallel to the central longitudinal axis 40 and which are arranged in the fourth, i.e. uppermost, part body TK4. The uppermost part body TK4 describes a guide beam-side part body TK4 of the bearing element 26. The alignment holes 46 are open at the top. Their function is described with reference to 12 explained in more detail.

In 10 another embodiment of an alignment element 13 according to the invention is shown. The alignment element 13 in turn comprises an anchor element 16 and a bearing element 26. In 10 the compensating element 13 is attached to the guide beam 8.

Here, a maximum diameter of the compensation element 13 is smaller than a diameter of the bottom-side fastening hole 21 of the guide beam 8. This makes it possible to 10 The compensation element 13 shown in the drawing is to be arranged through the opening 20 of the guide beam 8 and through the bottom-side fastening hole 21 in a recess 15 of the foundation 7 and then mounted. Also shown is a pin hole 41 which is to be drilled in accordance with the explanations for 8th is trained.

This in 10 The bearing element 26 shown comprises a first part body TK1, which is connected to a second part body TK2 via a first connecting web VS1. The second part body TK2 is in turn connected to a third part body TK3 via a second connecting web VS2. The third part body TK3 is connected to a fourth part body TK4 via a third connecting web VS3. It is shown here that the slots S, which are formed between the parts TK1, ..., TK4, have a first section lying on the inside in the radial direction with a first height of the slot S, the height in the direction of the central longitudinal axis 40 (see e.g. 7 ) is measured. A second section of the slots S, which is located outside in the radial direction, has a height that is greater than the height of the slot S in the first section. The slots S are thus stepped in the radial direction. The surfaces SW provided by the stepping serve, like the 8th shown surface SW, for actuating and rotating the bearing element 26, for example by means of an open-end wrench.

In 11 is a perspective view of the 10 shown bearing element 26. This also has a central bore 25 with a central longitudinal axis 40. Furthermore, the central bore 25 of the bearing element 26 has a predetermined diameter, which is in particular larger than a diameter of an actuating tool, for example a hexagon socket tool. The connecting webs VS1, VS2, VS3, which are arranged between the partial bodies TK1, ..., TK4, can again be seen. Thus, the 11 The bearing element 26 shown is designed as a pendulum support element. Also shown are pin holes 41 and alignment holes 46, each of which is designed as blind holes.

In 12 is a longitudinal section through a guide beam 8 and a foundation 7 with a compensation element 13 according to the invention. In particular, the function of the 11 and 9 illustrated alignment holes 46. In this embodiment, the guide beam 8 has alignment holes 47, the axes of symmetry of which are oriented parallel to a central longitudinal axis 40. The alignment holes 47 are arranged, in particular at a predetermined distance, next to the base-side fastening hole 21. Alignment pins 44 can be introduced through the opening 20 of the guide beam 8 and through the alignment holes 47 into a space between the foundation 7 and the guide beam 8. Furthermore, the bearing element 26 can be rotated in such a way that the eg in 9 and 11 shown alignment holes 46 of the bearing element 26 are aligned with the alignment holes 47 of the guide beam 8. The axis of symmetry of the alignment holes 46 of the bearing element 26 corresponds to the axis of symmetry of the alignment holes 47 of the guide beam 8. This is particularly the case when the alignment pins 44 can protrude through the opening 20, through the alignment holes 47 of the guide beam 8 into the alignment holes 46 of the bearing element 26. This allows a simplified setting of a desired angular position of the bearing element 26. The alignment holes 47 of the guide beam 8 thus determine the desired angular position and thus the desired alignment of the bearing element 26.

Of course, it is also conceivable that the bearing element 26 is fastened to the anchor element 16 with a normal screw.

List of reference symbols

1

Coordinate measuring machine

2

Stand

3

Measuring arm

4

sensor

5

Floor

6

Measuring table

7

foundation

8th

Guide bar

9

cover

10

Cross slide

11

cover

12

mechanics

13

Compensating element

14

Adjusting element

14a

Adjusting element

14b

Adjusting element

15

Recess

16

Anchor element

17

Anchor element

18

Grouting mortar

19

Wooden cylinder

20

opening

21

bottom mounting hole

22

opening

23

bottom mounting hole

24

central hole

25

central hole

26

Bearing element

27

Differential thread screw

28

Threaded sleeve

29

Thread section

30

Expansion sleeve

31

Ball disc

32

conical pan

33

screw

34

inner thread

35

Spacer

36

Sleeve

37

first thread section

38

second thread section

39

Hexagon hole

40

central longitudinal axis

41

pin hole

42

Mother

43

disc

44

Alignment pin

45

Threaded rod

46

Alignment hole

47

Alignment hole

x

first horizontal direction

y

second horizontal direction

e

Vertical direction

TK1

first part body

TK2

second part body

TK3

third part body

TK4

fourth part body

VS1

first connecting bridge

VS2

second connecting bridge

VS3

third connecting bridge

SW

Area

Claims (9)

Compensating element for mounting a component on a foundation (7), wherein the compensating element (13) comprises at least one bearing element (26) and at least one anchor element (16), wherein the anchor element (16) serves to anchor the compensating element (13) in the foundation (7), wherein the bearing element (26) can be fastened to the at least one anchor element (16), wherein the bearing element (26) allows a relative translational movement between the component and the foundation (7) in at least one spatial direction, wherein the spatial direction has at least a portion that is oriented perpendicular to a central longitudinal axis (40) of the bearing element (26), wherein the anchor element (16) can be fastened to the bearing element (26) through the bearing element (26), characterized in that the bearing element (26) has a through hole (25), wherein the anchor element (16) can be fastened to the bearing element (26) through the through hole (25), wherein the through bore (25) has a central longitudinal axis which corresponds to a central longitudinal axis of the bearing element (26). Compensating element according to Claim 1 , characterized in that the bearing element (26) can be fastened to the anchor element (16) so as to be rotatable about the central longitudinal axis (40) of the bearing element (26). Compensating element according to one of the Claims 1 until 2 , characterized in that the bearing element (26) has or forms at least one slot (S). Compensating element according to one of the Claims 1 until 3 , characterized in that the bearing element (26) has four partial bodies (TK1, TK2, TK3, TK4) arranged one above the other along the central longitudinal axis (40) of the bearing element (26), wherein the partial bodies (TK1, TK2, TK3, TK4) are each connected via at least one connecting web (VS1, VS2, VS3), wherein the connecting webs (VS1, VS3) extend between a first and a second partial body (TK1, TK2) and a third and a fourth partial body (TK3, TK4) in a first direction parallel to one another, wherein the connecting web (VS2) extends between the second and the third partial body (TK2, TK3) in a direction perpendicular to the first direction. Compensating element according to one of the Claims 1 until 4 , characterized in that the bearing element (26) is fastened to the anchor element (16) by means of a differential thread screw (27). Compensating element according to one of the Claims 1 until 5 , characterized in that the compensating element (13) additionally comprises an adjusting element (14) which has a height adjustment for adjusting the height of the component relative to the foundation (7). Coordinate measuring machine with a guide element and a compensating element (13) according to one of the Claims 1 until 6 , wherein the guide element is mounted on a foundation (7) via the compensating element (13), wherein the anchor element (16) is anchored in the foundation (7), wherein the bearing element (26) allows a relative translational movement between the guide element and the foundation (7) in at least one spatial direction, wherein the spatial direction has at least a portion which is oriented perpendicular to a central longitudinal axis (40) of the bearing element (26), wherein the anchor element (16) can be fastened to the bearing element (26) through the bearing element (26), characterized in that the bearing element (26) has a through-bore (25), wherein the anchor element (16) can be fastened to the bearing element (26) through the through-bore (25), wherein the through-bore (25) has a central longitudinal axis which corresponds to a central longitudinal axis of the bearing element (26). Coordinate measuring machine according to Claim 7 , characterized in that the bearing element (26) can be fastened to the anchor element (16) from the side of the guide element facing away from the foundation (7). Method for fastening a component to a foundation (7), wherein an anchor element (16) of a compensating element (13) is introduced into a foundation (7), wherein a bearing element (26) of the compensating element (13) is fastened to the anchor element (16) such that the bearing element (26) allows a relative translational movement between the guide element and the foundation (7) in at least one spatial direction, wherein the spatial direction has at least a portion that is oriented perpendicular to a central longitudinal axis (40) of the bearing element (26), wherein the bearing element (26) has a through-bore (25), wherein the anchor element (16) is fastened to the bearing element (26) through the through-bore (25), wherein the through-bore (25) has a central longitudinal axis that corresponds to a central longitudinal axis of the bearing element (26).

Images