Combined hydrostatic guideway structure and guideway flatness adjusting method thereof

Abstract

The invention provides a combined hydrostatic guideway structure and a guideway flatness adjusting method thereof, and belongs to the technical field of hydrostatic guideways. The combined guide rail solves the problems that large errors exist in the flatness of an existing combined guide rail, and therefore the operation precision of a sliding block is affected. The guide rail further comprises a floating panel, a glue injection gap is formed between the floating panel and the supporting block, the glue injection gap is filled with injected glue to form a glue injection layer, and a plurality of positioning datum planes used for attaching and positioning the inner sliding attaching face are formed on the periphery of the glue injection layer. The method has the advantages that the overall flatness of the guide rail is guaranteed through a leveling mode of glue injection; the telescopic gap between every two adjacent supporting blocks provides a deformation space, and due to the fact that one end of each floating panel is the free end, the floating panels can only deform in the length direction of the guide rail and cannot be warped, and therefore the precision of sliding operation is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of hydrostatic guide rails and relates to a combined hydrostatic guide rail structure and a method for adjusting the flatness of the guide rail. Background Art

[0002] Natural granite has the advantages of good stability, low price and small thermal expansion coefficient. The bed of the machine tool made of natural granite has good stability and high precision. The guide rail fixed on the bed is generally made of steel or ceramic. Due to the inconsistency of thermal expansion coefficients of steel, ceramic and natural granite, a temperature difference occurs between the guide rail and the machine tool, resulting in bending, warping and deformation of the guide rail.

[0003] By dividing the entire guide rail into several parts and leaving a telescopic gap between two adjacent guide rails, when a temperature difference occurs between each support block and the machine tool, the guide rail will deform along the length direction, and the telescopic gap can provide deformation space for the guide rail. Although the problem of guide rail warping is solved, the flatness of this combined guide rail will have a large error, thus affecting the accuracy of the slider operation. Summary of the invention

[0004] The first purpose of the present invention is to address the above-mentioned problems existing in the existing guide rails and bed bodies, and to propose a combined hydrostatic guide rail structure capable of adjusting the flatness of the guide rails.

[0005] The first object of the present invention can be achieved by the following technical solutions:

[0006] A combined static pressure guide rail structure, comprising a guide rail and a slider, wherein the slider is slidably arranged on the guide rail, wherein the guide rail comprises a plurality of support blocks, each support block is arranged at intervals along the movement direction of the slider, and a telescopic gap is provided between two adjacent support blocks; wherein the guide rail further comprises a floating panel, wherein the floating panel cover is arranged on the outer periphery of each support block, and the slider is slidably arranged on the floating panel;

[0007] The outer periphery of the floating panel is provided with a plurality of outer sliding fitting surfaces cooperating with the slider, the inner wall of the floating panel is provided with a plurality of inner sliding fitting surfaces, a glue injection gap is provided between the floating panel and the support block, and the glue injection gap is filled with glue to form a glue injection layer, so that the outer periphery of the glue injection layer forms a plurality of positioning reference surfaces for the inner sliding fitting surfaces to be positioned against; the floating panel extends along the sliding direction of the slider, and one end of the floating panel is relatively fixed to the support block, and the other end is a free end.

[0008] In the above-mentioned combined hydrostatic guide rail structure, the support block is injected with glue through a leveling and positioning device to form the above-mentioned positioning reference surface. The leveling and positioning device includes a template, which is fixedly connected to the support block. The inner wall of the template is provided with a plurality of leveling planes. The support block is provided with a plurality of glue injection holes corresponding to the positions of the leveling planes and connected to each other. Glue is injected into the glue injection holes to fill the glue injection gap.

[0009] In the above-mentioned combined static pressure guide rail structure, the leveling and positioning device also includes a lining part. The lining part is installed in the glue injection gap and then glue is injected. The glue pushes the lining part to stick to the leveling surface and is fixedly connected to the support block, and the above-mentioned glue injection layer is formed between the lining part and the support block.

[0010] In the above-mentioned combined hydrostatic guide rail structure, after the glue injection is completed, the outer periphery of the lining member forms the above-mentioned positioning reference surface.

[0011] In the above-mentioned combined hydrostatic guide rail structure, after the glue injection is completed, the lining member is removed, and the glue solidifies to form a glue injection layer, and the outer periphery of the glue injection layer forms the above-mentioned positioning reference surface.

[0012] In the above-mentioned combined hydrostatic guide rail structure, the inner lining member is composed of a plurality of lining plates, and each inner sliding fitting surface is provided with a lining plate.

[0013] In the above-mentioned combined hydrostatic guide rail structure, the inner lining member includes a flexible film, and a piece of the flexible film is bent and fits with each inner sliding fitting surface.

[0014] The second objective of the present invention is to propose a method for adjusting the flatness of a guide rail in view of the above-mentioned problems existing in the existing guide rails and bed.

[0015] The second object of the present invention can be achieved by the following technical solutions:

[0016] A method for adjusting the flatness of a guide rail, for adjusting the flatness of the above-mentioned combined hydrostatic guide rail structure, is characterized in that it comprises the following steps:

[0017] S1: Fix the guide rail on the bed of the machine tool;

[0018] S2: Fix the template on the bed and install the lining parts;

[0019] S3: injecting glue into the glue injection holes of each support block;

[0020] S4: After the glue is dry, remove the template.

[0021] In the above-mentioned method for adjusting the flatness of a combined hydrostatic guide rail structure, after the template is removed, the outer periphery of the lining member forms the above-mentioned positioning reference surface, the floating panel is fixed on the support block, and then the slider is installed on the floating panel.

[0022] In the above-mentioned method for adjusting the flatness of a combined hydrostatic guide rail structure, after the template is removed, the lining is removed, the outer periphery of the injection layer forms the above-mentioned positioning reference surface, the floating panel is fixed on the support block, and then the slider is installed on the floating panel.

[0023] In the above-mentioned method for adjusting the flatness of a combined hydrostatic guide rail structure, in step S2, the lining member is first fixed on the support block, and then the template is fixed on the bed.

[0024] In the above-mentioned method for adjusting the flatness of a combined hydrostatic guide rail structure, in step S2, the template is first fixed on the bed, and then the lining member is installed between the template and the support block.

[0025] Compared with the prior art, the present invention adopts a leveling method of injecting glue between the lining member and the support block, so that the outer periphery of the lining member forms a positioning reference surface that can be used for the inner sliding fitting surface to be positioned, thereby ensuring the overall flatness of the guide rail; when a temperature difference occurs between each support block and the machine tool, the support block will deform along the length direction, and the telescopic gap between two adjacent support blocks provides a deformation space; since one end of the floating panel is relatively fixed to the support block and the other end is a free end, the floating panel will only deform along the length direction of the guide rail and will not warp, thereby ensuring the accuracy of the sliding operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the guide rail and the slider of the present invention;

[0027] Figure 2 is a cross-sectional view of the guide rail and the slider of the present invention;

[0028] Figure 3 It is an enlarged cross-sectional view of the sliding block and the glue injection layer after the inner lining plate is removed from the present invention;

[0029] Figure 4 is an enlarged cross-sectional view of a slider and a liner of the present invention;

[0030] Figure 5 is an enlarged cross-sectional view of the slider and the flexible film of the present invention;

[0031] Figure 6 It is a structural schematic diagram of the split template of the present invention;

[0032] Figure 7 It is a structural schematic diagram of the integral template of the present invention;

[0033] Figure 8 It is a structural schematic diagram of the combined template of the present invention;

[0034] Fig. 9 is an enlarged cross-sectional view of the template and liner of the present invention;

[0035] Fig.10 It is an enlarged cross-sectional view of the template and the flexible film of the present invention.

[0036] In the figure, 1, slider; 2, support block; 3, floating panel; 4, lining; 5, glue injection layer; 6, template; 7, glue injection hole; 8, lining plate; 9, flexible film; 10, static pressure oil chamber. DETAILED DESCRIPTION

[0037] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0038] Example 1

[0039] like Figure 1 As shown, a combined static pressure guide rail structure described in the present invention includes a guide rail and a slider 1. The slider 1 is slidably set on the guide rail. The guide rail includes a plurality of support blocks 2. The support blocks 2 are arranged at intervals along the movement direction of the slider 1, and there is a telescopic gap between two adjacent support blocks 2; the guide rail also includes a floating panel 3, the floating panel 3 is covered on the outer periphery of each support block 2, and the slider 1 is slidably set on the floating panel 3.

[0040] like Figures 2 to 5 As shown, the outer periphery of the floating panel 3 is provided with a plurality of outer sliding fitting surfaces cooperating with the slider 1, the inner wall of the floating panel 3 is provided with a plurality of inner sliding fitting surfaces, a glue injection gap is provided between the floating panel 3 and the support block 2, and a glue injection layer 5 is formed by filling the glue injection gap by glue injection, so that the outer periphery of the glue injection layer 5 forms a plurality of positioning reference surfaces for the inner sliding fitting surfaces to be positioned against; the floating panel 3 extends along the sliding direction of the slider 1, and one end of the floating panel 3 is relatively fixed to the support block 2, and the other end is a free end.

[0041] like Figures 3 to 5 As shown, a static pressure oil chamber 10 is also provided on the slider 1.

[0042] like Figures 6 to 8 As shown, the support block 2 is injected with glue through a leveling and positioning device to form the above-mentioned positioning reference surface. The leveling and positioning device includes a template 6, which is fixedly connected to the support block 2. The inner wall of the template 6 is provided with a plurality of leveling planes. The support block 2 is provided with a plurality of injection holes 7 corresponding to and connected to the leveling planes. Glue is injected into the injection holes 7 to fill the injection gap. The leveling and positioning device also includes an inner lining 4. The inner lining 4 is installed in the injection gap and then injected with glue. The glue pushes the inner lining 4 to abut against the leveling plane and is fixedly connected to the support block 2. The above-mentioned injection layer 5 is formed between the inner lining 4 and the support block 2.

[0043] The structure of the template 6 described in the present invention is various. Figure 6 , Figure 7 and Figure 8 The structures of three templates 6 are listed. Figure 6The template 6 in the figure is a split structure, and two templates 6 are symmetrically arranged on the left and right sides for installing and fixing the lining members 4 on the left and right guide rails respectively; Figure 7 The template 6 in the figure is an integral structure; Figure 8 The template 6 in the figure is a combined structure, and the two L-shaped templates 6 on the left and right are combined and installed with a connecting plate.

[0044] A method for adjusting the flatness of a combined hydrostatic guide rail structure described in the present invention adjusts the flatness of the combined hydrostatic guide rail structure, and comprises the following steps:

[0045] S1: Fix the guide rail on the bed of the machine tool;

[0046] S2: Fix the template 6 on the bed and install the lining 4;

[0047] S3: injecting glue into the glue injection hole 7 of each support block 2;

[0048] S4: After the glue is completely dry, remove the template 6;

[0049] S5: Fix the floating panel 3 on the support block 2;

[0050] S6: Install the slider 1 on the floating panel 3.

[0051] In step S4, after the template 6 is removed, the outer periphery of the lining member 4 forms the above-mentioned positioning reference surface. In step S2, the lining member 4 can be first fixed on the support block 2, and then the template 6 is fixed on the bed, or the template 6 can be first fixed on the bed, and then the lining member 4 is installed between the template 6 and the support block 2.

[0052] like Figure 4 and Fig. 9 As shown, the inner lining member 4 is composed of a plurality of lining plates 8, and each inner sliding contact surface is provided with a lining plate 8. In step S2 of the flatness adjustment method, the template 6 can be first fixed on the bed, and then the lining plates 8 are respectively inserted between the template 6 and the support block 2, and then the glue injection work of step S3 is performed; or the lining plates 8 can be first fixed on the support block 2 by tying with rubber bands, and then the template 6 is fixed on the bed, and then the glue injection work of step S3 is performed.

[0053] Example 2

[0054] Different from the first embodiment, the flatness adjustment method of the combined hydrostatic guide rail structure described in the present embodiment is characterized in that it comprises the following steps:

[0055] S1: Fix the guide rail on the bed of the machine tool;

[0056] S2: Fix the template 6 on the bed and install the lining 4;

[0057] S3: injecting glue into the glue injection hole 7 of each support block 2;

[0058] S4: After the glue is completely dry, remove the template 6 and then remove the lining 4;

[0059] S5: Fix the floating panel 3 on the support block 2;

[0060] S6: Install the slider 1 on the floating panel 3.

[0061] like Figure 3 As shown, in step S4, after the template 6 is removed, the lining member 4 is removed so that the outer periphery of the injection layer 5 forms the above-mentioned positioning reference surface.

[0062] Example 3

[0063] like Figure 5 and Fig.10 As shown, different from the embodiment 1, the inner lining member 4 described in this embodiment includes a flexible film 9, and a piece of the flexible film 9 is bent and fits with each inner sliding fit surface. In step S2 of the flatness adjustment method, the flexible film 9 is firstly pasted on the support block 2 with a small amount of glue, and the template 6 is fixed on the bed before the glue solidifies, and then the glue injection work of step S3 is performed.

[0064] It should be understood that in the claims and description of the present invention, all "including..." should be understood as an open-ended meaning, that is, its meaning is equivalent to "at least contains...", and should not be understood as a closed meaning, that is, its meaning should not be understood as "only includes...".

[0065] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A combined hydrostatic guide rail structure, comprising a guide rail and a slider (1), wherein the slider (1) is slidably arranged on the guide rail, wherein the guide rail comprises a plurality of support blocks (2), wherein the support blocks (2) are arranged at intervals along the moving direction of the slider (1), and a telescopic gap is provided between two adjacent support blocks (2); wherein: The guide rail further comprises a floating panel (3), the floating panel (3) is covered on the outer periphery of each support block (2), and the slider (1) is slidably arranged on the floating panel (3); The outer periphery of the floating panel (3) is provided with a plurality of outer sliding fitting surfaces cooperating with the slider (1); the inner wall of the floating panel (3) is provided with a plurality of inner sliding fitting surfaces; a glue injection gap is provided between the floating panel (3) and the support block (2); the glue injection gap is filled with glue to form a glue injection layer (5), so that the outer periphery of the glue injection layer (5) forms a plurality of positioning reference surfaces for the inner sliding fitting surfaces to be positioned against; the floating panel (3) extends along the sliding direction of the slider (1); one end of the floating panel (3) is relatively fixed to the support block (2), and the other end is a free end.

2. A combined hydrostatic guide rail structure according to claim 1, characterized in that: The support block (2) is injected with glue through a leveling and positioning device to form the above-mentioned positioning reference surface. The leveling and positioning device comprises a template (6). The template (6) is fixedly connected to the support block (2). The inner wall of the template (6) is provided with a plurality of leveling planes. The support block (2) is provided with a plurality of glue injection holes (7) corresponding to the positions of the leveling planes and connected to each other. Glue is injected into the glue injection holes (7) to fill the glue injection gap.

3. A combined static pressure guide rail structure according to claim 2, characterized in that: The leveling and positioning device also includes an inner lining member (4). The inner lining member (4) is inserted into the glue injection gap and then glue is injected. The glue pushes the inner lining member (4) to stick to the leveling surface and is fixedly connected to the support block (2). The above-mentioned glue injection layer (5) is formed between the inner lining member (4) and the support block (2).

4. A combined static pressure guide rail structure according to claim 3, characterized in that: The inner lining member (4) is composed of a plurality of lining plates (8), and each inner sliding fitting surface is provided with a lining plate (8).

5. The combined static pressure guide rail structure according to claim 3, characterized in that: The lining member (4) comprises a flexible film (9), and a piece of the flexible film (9) is bent and fitted with each inner sliding fitting surface.

6. A method for adjusting the flatness of a combined hydrostatic guide rail structure, for adjusting the flatness of the combined hydrostatic guide rail structure according to any one of claims 1 to 5, characterized in that: It includes the following steps: S1: Fix the guide rail on the bed of the machine tool; S2: Fix the template (6) on the bed and install the lining (4); S3: injecting glue into the glue injection holes (7) of each support block (2); S4: After the glue is completely dry, remove the template (6).

7. A method for adjusting the flatness of a combined hydrostatic guide rail structure according to claim 6, characterized in that: After the template (6) is removed, the outer periphery of the lining member (4) forms the above-mentioned positioning reference surface, the floating panel (3) is fixed on the support block (2), and then the slider (1) is installed on the floating panel (3).

8. A method for adjusting the flatness of a combined hydrostatic guide rail structure according to claim 6, characterized in that: After the template (6) is removed, the lining member (4) is removed, the outer periphery of the injection layer (5) forms the above-mentioned positioning reference surface, the floating panel (3) is fixed on the support block (2), and then the slider (1) is installed on the floating panel (3).

9. A method for adjusting the flatness of a combined hydrostatic guide rail structure according to claim 6, characterized in that: In step S2, the lining member (4) is first fixed to the support block (2), and then the template (6) is fixed to the bed.

10. A method for adjusting the flatness of a combined hydrostatic guide rail structure according to claim 6, characterized in that: In step S2, the template (6) is first fixed on the bed, and then the lining member (4) is installed between the template (6) and the support block (2).

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