GUIDE DEVICE, PRECISION SUPPORT FOR A LINEAR RAIL AND ADJUSTING METHOD

Description

[0001] The present invention relates to an improved guide device for a machine tool, an improved precision support for a linear rail, and an adjustment method for adjusting a guide device of a machine tool.

[0002] Conventional guide devices for machine tools known from the prior art usually require labor-intensive and costly machining of the mounting surfaces for receiving the guide rails in order to achieve the desired form and positional accuracy of the guide rail.

[0003] The accuracy of a machine tool depends, among other things, on the accuracy of the linear movement of its axes. Linear guides (typically recirculating roller units consisting of a rail and carriage) are mounted on structural components and pressed, for example, against a lateral stop. The linear guide is thus attached to the machine tool via its contact surfaces. The straightness of an axis's linear movement therefore depends directly on the manufacturing accuracy of the contact surface and the stop of the structural component to which the rails are mounted. To increase the accuracy of the guides, the contact surfaces of the structural components to which the linear guide is attached are, for example, painstakingly reworked by hand to achieve the desired accuracy.

[0004] For example, DE 43 014 355 A1 discloses a method for mounting a linear guide rail on a base unit. This method proposes pre-fixing the linear guide rail at various spaced-apart adjustment points and filling the gap between the linear guide rail and the base unit with a curable filler. The linear guide rail can then be fixed to the base unit by curing the filler.

[0005] Furthermore, a guide device for a slide of a preferably three-dimensional measuring and / or marking device is known from DE 40 27 637 A1. The guide device runs along a longitudinal side of a surface plate with a guide rail which can be clamped to at least one surface of the surface plate, wherein the guide rail has an adjustment element at each of the fastening points by means of which the distance of the guide rail from the surface of the surface plate can be adjusted.

[0006] Based on the foregoing prior art, it is an object of the present invention to provide a guide device and a precision support for a linear guide rail of a machine tool, so that the accuracy of the machine tool can be increased in a simple and efficient manner. Furthermore, it is an object of the present invention to provide an adjustment method for setting the position of the guide rail, with which a high accuracy of the linear guide rail can be achieved in a simple and efficient manner, thus ensuring the most precise possible linear movement along the linear guide.

[0007] To solve the aforementioned problems of the present invention, the features of the independent claims are proposed. Dependent claims relate to preferred embodiments of the present invention.

[0008] According to one aspect of the invention, a guide device for a machine tool is proposed. The guide device comprises a base body and a guide rail. The base body can be a structural component of a machine tool. The guide rail can have at least one bearing surface for supporting the guide rail on the base body and a guide axis (for example, for linear movement), and the base body can have at least one contact surface. Furthermore, the invention proposes a plurality of interchangeable support plates. The interchangeable support plates are provided for the precise positioning (or support) of the guide rail on the base body. The support plates are arranged parallel to each other along the guide axis to set defined distances between the bearing surface of the guide rail and the contact surface of the base body.This design allows for the placement of numerous support plates parallel to one another along the guide rail, specifically between the guide rail's bearing surface and the base body's contact surface. The position and / or shape of the guide rail can be adjusted section by section, specifically in the sections where the respective interchangeable support plates are located, by replacing the existing support plates with appropriately adapted ones. The support plates thus determine the precise position of the guide rail, allowing inaccuracies in the base body and / or the guide rail (e.g., manufacturing-related inaccuracies) to be compensated for by the adapted, interchangeable support plates.Extensive machining of the contact surface on the base body is therefore no longer necessary, as the replaceable support plates rest on the contact surfaces of the base body, and the guide rail in turn rests on the replaceable support plates. Thus, thanks to the optimally adapted replaceable support plates, a high degree of accuracy in the shape and position of the guide rail can be achieved without requiring extensive, large-scale reworking of the base body and / or the rail.

[0009] The support plates can be arranged along the guide axis according to their respective thicknesses in such a way that any deviation in accuracy, such as positional or form deviations between the actual and target positions of the guide rail and / or base body, can be compensated for, and the guide rail resting on the support plates can be brought into a predetermined, ideal guiding position. By adjusting the thicknesses and / or shapes of the respective interchangeable support plates along the sections of the guide rail's longitudinal axis, highly precise positioning of the guide rail is possible, thus providing a guide device for high-precision linear motion.

[0010] Several support sections can be located along the guide rail, and a support plate can be provided in each support section. The distance between the guide rail and the base body in the respective support section can be adjusted by the thickness of the support plates provided in the support section.

[0011] Each support section can have a customized, replaceable support plate, which is adapted to compensate for or offset shape deviations (or tolerance deviations) of the part of the guide rail and the base body present in the respective support section.

[0012] The multitude of support plates includes, for example, several horizontal and several vertical support plates. The horizontal support plates are spaced apart and arranged parallel to each other along a horizontal contact surface of the base body. Preferably, the horizontal support plates are arranged with an offset relative to each other. The vertical support surfaces can be arranged parallel to each other along the vertical contact surface on the base body. Preferably, the vertical support plates are in contact with each other. Advantageously, the base body has a vertical contact surface for receiving the vertical support plates as well as a horizontal contact surface for receiving the horizontal support plates. However, the vertical contact surface on the base body can also be defined by an additional structural component on the base body.The particularly advantageous design using horizontal and vertical support plates allows for a very precise positioning of the guide rail. In particular, the position of the guide rail can be finely adjusted in both the vertical and horizontal directions by appropriately adjusting the respective horizontal and / or vertical support plates of the relevant support section. A support section preferably comprises at least one horizontal support plate and one vertical support plate, which are further preferably in contact with each other.

[0013] The horizontal support plates can be used to position the guide axis in a Z direction and the vertical support plates can be used to position the guide axis in an X direction.

[0014] Advantageously, the horizontal support plates are each contacted with at least one vertical support plate.

[0015] Advantageously, the base body has cutouts at each of the support sections, allowing the support plates to be interchanged along the corresponding cutout. In a particularly advantageous embodiment, these cutouts form a guide surface for guiding the support plates in a preferably horizontal direction up to a section below the guide rail. Thus, the cutouts provide a guide for the support plate in a horizontal direction. Advantageously, the cutouts have a rectangular cross-section.

[0016] The clearances can form guides for inserting the respective support plates, especially the horizontal support plates, in an area between the guide rail and the base body.

[0017] The guide rail can be contacted on a first vertical side by lateral pressure pieces and on the opposite second vertical side by vertical support plates, wherein the pressure pieces are preferably wedge-shaped and each has at least one bore. The guide rail can thus be fixed in the horizontal plane by the lateral pressure pieces and the vertical support plate. Advantageously, the pressure pieces each have at least one bore for receiving a screw for fastening the pressure pieces to a structural part of the base body, to the base body itself, or to a side surface of the recess in the base body. By screwing the pressure pieces to the base body and due to their wedge shape, a force can be applied to the guide rail in the horizontal direction, pressing it against the vertical support plate.The wedge shape of the pressure pieces allows a force to be applied to the guide rail in a horizontal direction.

[0018] The guide rail can be fixed to the base body by a screw connection, and the horizontal support plates can serve as spacers for this screw connection. Advantageously, the support plates can each be one-piece, ground spacers, and the guide rail can be a linear guide rail.

[0019] The support plates can be in direct contact with the mounting surface of the base body and directly with the bearing surface of the guide rail. This direct contact allows for the adjustment of accuracy deviations in the guide rail mounted on the base body by modifying the support plates.

[0020] A precision support for mounting a guide device on the base body of a machine tool can have a plurality of interchangeable support plates. The support plates can form contact sections for the guide device and are preferably positioned parallel to each other on the base body along a guide axis of the guide device. Each support plate can have a first contact surface for contacting the guide device and a second contact surface for contacting the base body. Preferably, the support plates can be designed to compensate for tolerances between a bearing surface of the guide rail and a contact surface of the base body. The support plates can, for example, have a modified thickness profile that is precisely adapted to the tolerance deviation in the associated support section. The thickness of the support plate can thus vary along its width.

[0021] Advantageously, the support plates can be positioned along the guide axis according to their thickness to compensate for accuracy deviations such as the form or positional accuracy of the guide rail and / or the base body, ensuring that the guide device mounted on the support plates assumes an ideal guiding position. The thickness of the support plate can have a dimensional tolerance of less than or equal to 1 µm.

[0022] The support plates can each be formed in one piece, and each support section can include a customized, replaceable support plate that is adapted to compensate for shape deviations between the guide element and the base body in the respective support section. For this purpose, the customized support plate can have raised and recessed areas on its surface to achieve precise shape compensation.

[0023] The first and second bearing surfaces of a support plate can be designed to be parallel to each other, and the maximum deviation of the distance between the first and second bearing surfaces can be less than or equal to 1µm, and preferably the surface of the first and / or second bearing surface is ground.

[0024] The range of support plates can include horizontal and vertical support plates. The horizontal support plates can be spaced apart and positioned parallel to each other along a horizontal contact surface of the base body, and the vertical support plates can be positioned parallel to each other along a vertical contact surface of the base body.

[0025] The horizontal support plates can be spacers, each having an opening for receiving a fastening screw of the guide device.

[0026] A method for adjusting the position of a guide rail of a guide device can comprise at least the following steps: adjusting the position of the guide rail to a predefined position by adapting the shape of at least one support plate to a modified shape and / or by replacing at least one support plate. This advantageous design makes it possible to bring the guide rail into an ideal position by simply replacing or adapting the support plates in support sections where a deviation in shape or accuracy of the base body and / or the guide rail has been detected. The method can additionally include the step of determining the position of the guide rail at a measuring position, for example, using a measuring probe or a dial gauge.

[0027] The method can also be designed such that, to adjust the position of the guide rail, the distance between the base body and the guide rail is set by adapting at least one support plate to a modified shape. The position of the guide rail can thus be adjusted section by section by modifying the support plates. Preferably, the position of the guide rail is determined in a state where the guide rail is attached to the base body, using the support plates. After determining the position of the installed guide rail, the support plate can be replaced or modified in the areas where a positional deviation has been detected, according to the detected deviation.For example, if a positive deviation in the vertical direction of the guide rail's position is detected, the corresponding deviation can be compensated for by removing the support plate located in the support section. In other words, the support plates can be adjusted according to the detected positional or form deviation of the guide rail to compensate for this deviation.

[0028] At least one support plate can be brought into a modified shape by a machining process, in particular by grinding to compensate for the form and position tolerance of the base body and / or the guide rail.

[0029] To adapt the course of the guide axis to an ideal course, the distance between the guide rail and the base body can be adjusted section by section by replacing at least one support plate with an adapted support plate, wherein the adapted support plate is adapted to compensate for shape deviations of the part of the guide rail and the base body present in the respective support section.

[0030] To adjust the straightness and / or parallelism of the guide rail, the distance between the base body and the guide rail can be adjusted by modifying the dimensions and / or shape of at least one support plate to a customized form. This allows the straightness and / or parallelism of the guide rail to be adapted to an ideal alignment.

[0031] To adjust the position of the guide rail in a vertical direction, the distance between the base body and the guide rail can be adjusted by dimensionally and / or shape-adapting at least one horizontal support plate to a customized shape. To adjust the position of the guide rail in a horizontal direction, the distance between the base body and the guide rail can be adjusted by dimensionally and / or shape-adapting at least one vertical support plate to a customized shape.

[0032] The method may additionally include the steps of fixing the guide rail in a horizontal direction by clamping the guide rail between lateral pressure pieces and the vertical support plates; and fixing the guide rail in a vertical direction by a screw connection to the base body, wherein the horizontal support plates are spacer plates of the screw connection.

[0033] The method can also advantageously include the step of arranging support plates in sections along the guide axis, whereby the plate thicknesses of the support plates for each section are selected such that the guide rail approximates an ideal guide path.

[0034] A method for connecting a guide rail to the base body of a machine tool can include the steps of placing support plates in the sections along the guide axis, the thickness of which is selected for each section such that tolerance compensation occurs when the guide rail is screwed and / or clamped to the base body. In particular, by selecting the appropriate thickness of the support plates, tolerance compensation for the tolerance of the guide rail and / or the base body can be achieved, so that the guide rail, in its installed state, approximates an ideal guide path.

[0035] Use of a precision support for adjusting the position of a guide rail fixed to a base body.

[0036] Method for adjusting the position of a guide rail on a base body of a machine tool, wherein the method comprises the steps of: determining the position of the guide rail at a measuring position with a measuring probe; and adapting the guide rail to a predefined position by dimensional adjustment and / or shape adjustment of at least one support plate at the measuring position into an adapted shape or by replacing at least one support plate.

[0037] According to a further embodiment of the invention, a precision machine tool is proposed with a guide device according to one of the preceding embodiments. By appropriately adjusting the support plates, the position of the guide rail can be adjusted section by section, at least in the vertical and horizontal directions.

[0038] Brief description of the characters Fig. 1 shows a first view of the guide device, Fig. 2 shows a cross-sectional view of the guide device, Fig. 3 shows a further perspective view of the guide device, Fig. 4 shows the setup of the guide device with the guide rail removed, and Fig. 5 shows a machine tool with a measuring probe for measuring a geometric deviation of the guide device.

[0039] Exemplary embodiments of the present invention are described in detail below with reference to the exemplary figures. The features of the exemplary embodiments can be combined in whole or in part, and the present invention is in no way limited to the described exemplary embodiments. The scope of the invention is defined in the accompanying claims.

[0040] In the drawings, identical or similar features are indicated with the same reference symbols.

[0041] In Fig. 1 The diagram shows the structure of a guide device for a machine tool. The illustrated guide device comprises a precision support 100, which consists of a plurality of interchangeable support plates 1, 2, each of which forms support sections for contacting the guide rail LF with the base body 3 of the machine tool.

[0042] To achieve high accuracy, the entire guide bearing surfaces can, for example, be ground in a complex process. To avoid this complex and expensive reworking of the guide bearing surfaces, the present invention proposes the illustrated guide device with the precision support 100. The precision support, with its multiple interchangeable support plates 1, 2, improves the straightness of the linear movement along the guide rail, since manufacturing inaccuracies of the bearing and stop of the structural component to which the guide rails are attached can be compensated for by appropriate section-by-section adjustment of the interchangeable support plates.

[0043] The linear guide rail is thus mounted on, for example, ground (or scraped) support plates (tuning plates). Once the machine is finished, the geometry can then be optimized by replacing and / or adjusting the support plates 1 and 2 in individual rail sections. The guide device according to the invention thus enables a significant increase in the accuracy of the linear guide rail, achievable without disassembling the entire rail or the table, since only the individual support plates of the respective sections need to be replaced. The guiding accuracy of the linear guide rail can therefore be greatly improved.

[0044] As in Fig. 1 As shown, the guide rail LF, which is preferably a linear guide rail, is positioned on the base body 3 by means of support plates 1, 2. To fix the guide rail LF, mounting holes LF1 (e.g., blind holes) are provided on the guide rail LF, through which mounting screws can be passed to screw the guide rail LF to the base body 3. Preferably, a support plate 1, 2 is assigned to each mounting screw 5, which is inserted through the respective mounting hole LF1. In other words, as shown in Fig. 1 As shown, for example, eight openings are provided on the guide rail LF for eight fastening screws 5 for fastening the linear guide rail LF to the base body 3.

[0045] Each of these fastening screws 5 is provided in the area of ​​a support plate 2, which is a horizontal support plate. The horizontal support plates 2 preferably each have a bore through which the fastening screw 5 of the guide rail LF can be passed. By tightening the fastening screw 5, it is possible to fix the guide rail LF to the base body 3 by means of support plates 1, 2.

[0046] The horizontal support plates 2 each have a first and second contact surface 2A and 2B. These contact surfaces 2A and 2B of the horizontal support plate 2 make contact with the base body 3 on the one hand and with the guide rail LF on the other. In particular, the base body 3 has the horizontal contact surface 3D and the vertical contact surface 3E. As shown in Fig. 1 As shown, these contact surfaces preferably abut each other. The horizontal support plate 2 is placed on the horizontal contact surface 3D of the base body 3. The vertical support plates 1 are in turn brought into contact with the vertical contact surfaces 3E of the base body 3 to form a vertical contact surface for positioning and fixing the guide rail LF.

[0047] The horizontal support plates 2 can be removed from their support position via the respective cutouts 3A in the base body 3. The cutouts 3A facilitate both the easy insertion and removal of the horizontal support plates 2 and precise guidance of the horizontal support plates during insertion and removal. Each horizontal support plate 2 has an opening or engagement bore B, which simplifies their removal. A cooling pipe K is also provided in the area of ​​the horizontal contact surface 3D of the base body 3, running lengthwise along the guide rail LF to ensure optimal cooling of the rail, maintaining a constant temperature and preventing temperature-related warping.

[0048] As in Fig. 1 As can be seen, the guide rail LF is positioned on a multitude of horizontal support plates 2. To fix these horizontal support plates 2, the fastening screws 5 are passed through the fastening bore LF1 of the guide rail LF and secured.

[0049] In the initial configuration, the guide rail LF is mounted on uniform, unmodified support plates on the base body 3. The guide rail can then be measured. If a geometric deviation of the guide rail LF as mounted on the base body is detected, for example, through shape and position determination using a measuring probe M, the horizontal support plate 2 in the affected section can be replaced to compensate for the deviation. This replacement can be made with, for example, a thicker or thinner plate, or one that has been custom ground. This makes it possible to selectively improve the positioning of the guide rail LF in specific sections without having to disassemble the entire guide rail.

[0050] By appropriately replacing the horizontal support plates 2, it is possible to compensate for at least one vertical deviation of the guide rail LF. Such a deviation can arise on the one hand due to inaccuracies in the connection between the base body 3 and the guide rail LF, and on the other hand due to manufacturing inaccuracies of the parts. To compensate for the tolerances and to adjust the position of the guide rail LF to an ideal position, it is advantageous to replace and adjust the horizontal support plates 2 (and / or vertical support plate 1) section by section. As a result, it is possible to achieve a vertical bearing position for the guide rail LF that is as close as possible to an ideal alignment, thus ensuring a very high degree of straightness of the guide rail LF.

[0051] The basic body 3, as in Fig. 1 The figure shown also features the projection 3C, which forms the vertical contact surface 3E for contacting the vertical support plates 1. Analogous to the adjustment by replacing the horizontal support plates 2, the vertical support plates 1 can also be replaced accordingly to optimize the positioning of the guide rail LF in the horizontal plane or to compensate for the existing tolerances.

[0052] The guide rail LF can be fixed in the horizontal plane using the pressure pieces P. The pressure pieces P are, as shown in Fig. 1 As shown, a pressure piece P is provided in the area of ​​the projections 3B of the base body 3. Specifically, a pressure piece P is provided on a preferably inclined side surface of the projection 3B of the base body 3, which can be screwed to the base body 3 by means of a screw 6. The pressure piece P is in contact with a vertical side surface of the guide rail LF with one surface and with an end surface of the projection 3B with the opposite surface (which is preferably a wedge-shaped surface). The projections 3B of the base body 3 form the boundary between two adjacent clearances 3A. The projections 3B with the respective pressure pieces P are arranged parallel to each other along the longitudinal axis of the guide rail LF. By screwing the pressure piece P to the base body, a horizontal force is generated, which presses the guide rail LF in a horizontal direction towards the projection 3C of the base body 3.the vertical support plates 1 arranged in front of them, as shown in . Fig. 2 depicted.

[0053] In Fig. 2 A cross-sectional view of the guide device is shown. Horizontal support plates 2 are provided for vertical positioning and for compensating for tolerances in the vertical direction. The first and second support surfaces 2A, 2B of the horizontal support plate 2 form the direct contact surfaces between the base body 3 and the guide rail LF. In the exemplary example in Fig. 2 The guide rail LF has three parallel surfaces, designated as horizontal bearing surfaces LF3, which run along the longitudinal axis of the guide rail LF. These horizontal bearing surfaces LF3 are in contact with the (upper) support surface 2A of the horizontal support plates. The guide rail LF can be pressed onto the horizontal support plates 2 by means of the fastening screws 5 of the guide rail LF. The thickness or thickness profile of the horizontal support plates 2 determines the vertical position of the guide rail LF. If, for example, there is a deviation in the vertical direction from a determined difference amount with respect to the ideal position of the guide rail LF, the thickness of the horizontal support plates 2 can be adjusted accordingly to compensate for this difference. The guide rail LF can thus be easily brought into the ideal position.Advantageously, this can also be done in sections, so that a complete disassembly of the guide rail LF is unnecessary.

[0054] Positioning the guide rail LF in the horizontal direction, using the vertical support plates 1, is also possible by appropriately designing the thickness or the exact shape of the vertical support plates. As shown in Fig. 2 As shown, vertical support plates 1 are provided between the guide rail LF and the projection 3C of the base body 3. The vertical contact surface 3E of the projection 3C of the base body 3 forms the first contact surface of the vertical support plate 1. Opposite this, the vertical support plate 1 contacts the vertical bearing surface LF2 of the guide rail LF. On the opposite side of the guide rail LF, the pressure piece P, with its pressure surface PA, contacts the vertical bearing surface LF2 of the guide rail.

[0055] By screwing the pressure piece P in place, the guide rail LF is clamped or pressed, thus securing it in the horizontal direction. The horizontal clamping force of the pressure pieces P is achieved, for example, by providing an inclined side surface PK. This inclined side surface PK engages with the wedge-shaped surface of the projection 3B, and when the pressure pieces P are screwed to the base body 3, a horizontal clamping force is generated, which secures the guide rail LF between the lateral pressure piece P and the vertical support plate 1.

[0056] If a deviation in the position of the guide rail LF in the horizontal direction is detected, a section-by-section displacement of the guide rail LF can be effected by appropriately selecting the vertical support plates 1, in order to ultimately bring the guide rail LF into an ideal position.

[0057] In Fig. 3 Another view of the guide device is shown. The guide rail LF has the mounting holes LF1, each of which is assigned to a horizontal support plate 2 to form a support section. To replace a horizontal support plate 2, it is pulled out of the space between the guide rail LF and the base body 3 via the clearance 3A, after removing the mounting screw of the guide rail LF from the mounting hole LF1.

[0058] Fig.4 Figure 1 shows a representation of the guide device, with the guide rail LF removed for improved illustration of the vertical and horizontal support plates 1, 2. As shown from Fig. 4 As can be seen, the fastening screws 5 are provided, which are typically used to fix the guide rail LF. These screws 5 are passed through openings in the horizontal support plates 2 to engage with the thread of the base body 3 and ultimately fix the guide rail LF. The horizontal support plates 2 serve to position the guide axis in a Z-direction, and the vertical support plates 1 serve to position the guide axis in an X-direction.

[0059] Preferably, the horizontal support plates 2 are rectangular plates with a ground surface, formed in one piece. It is particularly advantageous if both the top and bottom surfaces of the respective support plates are ground. The horizontal support plates 2 also include a bore for facilitating removal of the plates from the space between the guide rail LF and the base body 3. Alternatively or additionally, further removal aids can be provided, such as a dovetail guide.

[0060] Fig. 5 This shows an example of how to determine the accuracy deviation of a guide rail on a machine tool. For example, a measuring probe M is provided which can be moved along the guide rail LF to record form deviations.

[0061] To adjust the position of the guide rail, a measuring position on the guide rail can be determined in a first step, for example, using a measuring probe M, for example along the in Fig. 5 The Y-axis shown in the diagram can be approached. By determining the geometric deviation, it is then possible to adjust the position of the guide rail to a predefined, ideal position by adapting the shape of at least one support plate to a modified form and / or by replacing at least one support plate. The support plate can, for example, be machined into a modified shape using a machining process, particularly grinding, to compensate for the shape deviations of the base body and / or the guide rail.

[0062] In particular, deviations of the guide rail from its ideal position can be detected. These deviations, in turn, can be compensated for by appropriately designing the horizontal support plates. For example, the support plates can be made thinner in certain areas to compensate for vertical deviations of the guide rail. This allows for the compensation of local geometric errors in the straightness and / or parallelism of the guide rail.

[0063] The guide rail can be pivoted or bent to a desired degree using the vertical and horizontal support plates, for example, to achieve local displacement of the guide rail. Advantageously, the support plates have flat surfaces on both the top and bottom surfaces as well as on all sides. The vertical support plates 1 can preferably be designed without holes, since drilling is unnecessary because the vertical support plates 1 are fixed by clamping them together using pressure pieces P.

[0064] Thus, the present invention makes it possible to provide an advantageous guide device that can be easily adjusted to compensate for, for example, geometric inaccuracies. In particular, it also makes it possible to reduce the requirements for the manufacturing and assembly accuracy of the base body 3 and / or the guide rail.

[0065] Various shapes or profiles can be used as guide rails. For example, profiles for flat guides, dovetail guides, prism guides, etc., can be used. The guide device according to the invention can also include, for example, rack elements of a pinion-rack system or other elongated components of a drive system.

Claims

1. Guide device, in particular for a machine tool, comprising - a base body (3) which has at least one contact surface, - a guide rail (LF) with at least one bearing surface and a guide axis, and - a precision support (100) which comprises a plurality of exchangeable support plates (1; 2) for positioning the guide rail (LF) on the base body (3); wherein the support plates (1; 2) are arranged along the guide axis for setting defined distances between the bearing surface of the guide rail (LF) and the contact surface of the base body (3); characterized in that the plurality of support plates (1; 2) comprises horizontal support plates (2) and vertical support plates (1), and the horizontal support plates (2) are provided spaced apart and parallel to one another along a horizontal contact surface of the base body (3), and the vertical support plates (1) are provided parallel to one another along a vertical contact surface on the base body (3).

2. Guide device according to Claim 1, wherein the support plates (1; 2) are arranged along the guide axis in accordance with their respective plate thickness in such a way that a deviation in shape and / or positional accuracy of the guide rail (LF) and / or of the base body (3) is compensated for, and the guide rail (LF) resting on the support plates (1; 2) is present in a predeterminable ideal guide position.

3. Guide device according to at least one of Claims 1 and 2, wherein a plurality of support sections are present along the guide rail (LF), and a support plate (1; 2) is provided in each support section, and the distance between the guide rail (LF) and the base body (3) in the respective support section is determined by the thickness of the support plate (1; 2) provided in the support section.

4. Guide device according to at least one of the preceding claims, wherein the base body (3) has clearances (3A) in each case on the support sections, such that the support plates (1; 2) are exchangeable along the clearances (3A).

5. Guide device according to at least one of the preceding claims, wherein the guide rail (LF) is contacted with lateral pressure pieces (P) on a first vertical side and is contacted with the vertical support plates (1) on the opposite second vertical side, and wherein the pressure pieces are preferably of wedge-shaped design and have at least one bore; and / or wherein the support plates (1; 2) are in each case integral, ground, spacer plates, and the guide rail (LF) is preferably a linear guide rail.

6. Precision support (100) of a guide device according to one of Claims 1 to 5, wherein the precision support is designed for receiving a guide rail (LF) on a base body (3) of the guide device, wherein the base body (3) can be a structural part of a machine tool, comprising - a plurality of exchangeable support plates (1; 2), which form support sections for contacting with the guide rail (LF) and are positioned here on the base body (3), along a guide axis of the guide rail (LF); wherein the support plates (1; 2) have in each case a first support surface for contacting with the guide rail (LF) and a second support surface for contacting with the base body (3), and the support plates (1; 2) are provided for tolerance compensation between a bearing surface of the guide rail (LF) and a contact surface of the base body (3); characterized in that the plurality of support plates (1; 2) comprises horizontal support plates (2) and vertical support plates (1), and the horizontal support plates (2) are provided spaced apart and parallel to one another along a horizontal contact surface of the base body (3), and the vertical support plates (1) are provided parallel to one another along a vertical contact surface on the base body (3).

7. Precision support according to Claim 6, wherein the support plates (1; 2) are positioned along the guide axis for compensating for a deviation in accuracy of the guide rail (LF) and / or of the base body (3), in accordance with their plate thicknesses, such that the guide rail (LF) mounted on the support plates (1; 2) is brought into an ideal guide position.

8. Precision support according to at least one of Claims 6 and 7, wherein the first support surface and the second support surface of a support plate (1; 2) are of plane-parallel design with respect to one another, and the maximum deviation in the distance between the first support surface and the second support surface is less than or equal to 1 µm, and the surface of the first and / or second support surface is preferably ground; and / or wherein the horizontal support plates (2) are spacer plates which have in each case an opening for receiving a fastening screw (5) of the guide rail (LF).

9. Method for setting the position of a guide rail (LF) of a guide device according to at least one of Claims 1 to 5, characterized by the steps of: adapting the position of the guide rail (LF) to a predefined position by adapting the shape of at least one support plate (1; 2) to an adapted shape and / or by replacing at least one support plate (1; 2).

10. Method according to Claim 9, wherein, in order to adapt the position of the guide rail (LF), the distance between the base body (3) and the guide rail (LF) is set by adapting the shape of at least one support plate (1; 2) to an adapted shape; and / or wherein the at least one support plate (1; 2) is brought to an adapted shape by a machining production method, in particular by grinding, in order to compensate for the shape and positional tolerance of the base body (3) and / or of the guide rail (LF).

11. Method according to at least one of Claims 9 to 10, wherein, in order to adapt the profile of the guide axis to an ideal profile, the distance between the guide rail (LF) and the base body (3) is adapted in sections, by means of replacing at least one support plate (1; 2) by an adapted support plate (1; 2), wherein the adapted support plate (1; 2) is adapted for compensating for deviations in shape of that part of the guide rail (LF) and of the base body (3) which is present in the respective support section; and / or wherein, in order to adapt the position of the guide rail (LF) in a vertical direction, the distance between the base body (3) and the guide rail (LF) is set by adapting the shape of at least one horizontal support plate (1; 2) to an adapted shape, and wherein, in order to adapt the position of the guide rail (LF) in a horizontal direction, the distance between the base body (3) and the guide rail (LF) is set by adapting the shape of at least one vertical support plate (1; 2) to an adapted shape.

12. Method according to at least one of Claims 9 to 11, comprising the steps of: - fixing the guide rail (LF) in a horizontal direction by clamping the guide rail (LF) between lateral pressure pieces (P) and the vertical support plates (1); and - fixing the guide rail (LF) in a vertical direction by means of a screw connection on the base body (3), wherein the horizontal support plates (2) are spacer plates of the screw connection.

13. Method for connecting a guide rail (LF) to a base body (3) of a guide device according to at least one of Claims 1 to 5, characterized by the step of: placing support plates (1; 2) in sections along the guide axis, wherein the plate thickness of the support plates (1; 2) is selected for each section in such a way that tolerance compensation takes place when the guide rail (LF) is screwed and / or clamped to the base body (3).

14. Method for adjusting the position of a guide rail (LF) on a base body (3) of a guide device according to at least one of Claims 1 to 5, wherein the method is characterized by the steps of: determining the position of the guide rail (LF) at a measuring position using a measuring probe, and adapting the position of the guide rail (LF) to a predefined position by adapting at least one support plate (1; 2) at the measuring position to an adapted shape and / or by replacing at least one support plate (1; 2).