Hydraulic guide rail of medium-sized ultra-precision machine tool

Abstract

The utility model discloses a hydraulic guide rail of a medium-sized ultra-precision machine tool. The hydraulic guide rail comprises a liquid floating sliding block and a guide rail assembly. The bottom of the hydraulic guide rail is provided with the bottom-layer first guide rail and the bottom-layer second guide rail, and the gap is reserved between the bottom-layer first guide rail and the bottom-layer second guide rail and is used for installing the band-type brake mechanism and the linear motor, so that the whole hydraulic guide rail is more compact in structure, space is saved, materials are saved, and cost is reduced. Meanwhile, the requirement on equipment for machining the part is also reduced; before the upper slide carriage is assembled, the mounting positions of the upper-layer guide rail, the middle-layer guide rail and the auxiliary guide rail on the bottom-layer second guide rail on the left side are adjusted through an arranged adjusting tool, and after the upper slide carriage is mounted, the mounting positions of the bottom-layer first guide rail, the upper-layer guide rail and the middle-layer guide rail on the right side are adjusted by taking the guide rail on the left side as a base; the problem that straightness and parallelism of two sides of the guide rail are not easy to adjust due to the fact that a bottom guide rail does not have a unified reference after being split can be solved.

Description

Technical Field

[0001] The utility model relates to a hydraulic guide rail, in particular to a hydraulic guide rail for a medium-sized ultra-precision machine tool, and belongs to the technical field of precision machining or ultra-precision machining. Background Art

[0002] Manufacturing is an important pillar of a country or region's national economy. Its competitiveness is ultimately reflected in the market share of newly produced industrial products, and manufacturing technology is the key to developing manufacturing and improving its product competitiveness. Precision and ultra-precision machining technology is the forefront and development direction of the manufacturing industry. The development of precision and ultra-precision machining technology directly affects the development of a country's cutting-edge technology and defense industry. Countries around the world attach great importance to this and invest a lot of effort in research and development. At the same time, they implement technical confidentiality and control the export of key processing technologies and equipment. With the rapid development of aerospace, high-precision instrumentation, inertial navigation platforms, optics and laser technologies and their wide application in multiple fields, the demand for processing various high-precision complex parts, optical parts, high-precision planes, curved surfaces and complex shapes is becoming increasingly urgent. Ultra-precision machine tools are essential processing equipment for processing and preparing various ultra-precision products, and hydraulic guide rails are indispensable structures for ultra-precision machine tools, which are used to precisely drive the upper slide to move to achieve ultra-precision machining.

[0003] In the prior art, a hydraulic cylinder-propelled machine tool static pressure guide rail workbench disclosed in announcement number CN206010439U includes a workbench body, two sliding guide rails arranged on the workbench body, two supporting guide rails arranged on the bed, and a hydraulic cylinder arranged on the bed, wherein the sliding guide rails are fixed on the lower surface of the workbench body; the supporting guide rails are fixed on the upper surface of the bed; the hydraulic cylinder is fixed on the upper surface of the bed, and the sliding guide rails and the supporting guide rails cooperate with each other. However, in actual use, due to the integral guide rails used in the prior art, a lot of space will be occupied, and it is difficult to put down a hydraulic cylinder or a linear motor as a driving structure, not to mention that the brake mechanism must be put down, which will increase the size of the entire component, and other components such as the corresponding base will also be increased accordingly. When the design of the machine tool is not compact, it will greatly affect the operator's use and the maintenance of the corresponding components. Utility Model Content

[0004] The purpose of the utility model is to provide a hydraulic guide rail for a medium-sized ultra-precision machine tool in order to solve at least one of the above-mentioned technical problems.

[0005] The utility model achieves the above-mentioned purpose through the following technical scheme: a hydraulic guide rail of a medium-sized ultra-precision machine tool, comprising a liquid floating slider and a guide rail assembly, the liquid floating slider is movably connected to the guide rail assembly, an upper slide plate is installed on the upper surface of the liquid floating slider, and the gap of the guide rail assembly is filled with pressure oil;

[0006] The guide rail assembly includes an upper guide rail, a middle guide rail, a bottom first guide rail and a bottom second guide rail. The bottom first guide rail and the bottom second guide rail are respectively located on the left and right sides of the hydraulic guide rail. The bottom first guide rail and the bottom second guide rail are placed on a medium-sized ultra-precision machine tool. The middle guide rail is respectively connected to the top of the bottom first guide rail and the bottom second guide rail, and the upper guide rail is installed above the middle guide rail.

[0007] Two liquid floating sliders are provided, and one of the liquid floating sliders is clamped between the bottom first guide rail and the upper guide rail, and the other liquid floating slider is clamped between the bottom second guide rail and the upper guide rail.

[0008] As a further solution of the utility model: the liquid floating sliders are respectively arranged on both sides of the bottom of the upper slide plate, and the upper slide plate and the liquid floating sliders are fixedly connected by positioning screws.

[0009] As a further solution of the utility model: the bottom first guide rail and the bottom second guide rail are fixedly connected to the medium-sized ultra-precision machine tool by fixing bolts, and a brake mechanism is also installed on the machine tool, in which the inner side surface of one liquid-floating slider is integrally connected with a clamping strip, and the clamping parts of the brake mechanism are arranged on the upper and lower sides of the clamping strip.

[0010] As a further solution of the present invention: the brake mechanism includes but is not limited to an electro-hydraulic brake, an electromagnetic brake and a permanent magnet motor brake.

[0011] As a further solution of the utility model: the brake mechanism is located on the side of the bottom first guide rail close to the bottom second guide rail, and a linear motor is arranged on the side of the bottom second guide rail close to the bottom first guide rail.

[0012] As a further solution of the utility model: the stator part of the linear motor is fixedly connected to the bottom second guide rail, and the mover part of the linear motor is fixedly connected to the upper slide.

[0013] As a further solution of the utility model: the middle guide rails are respectively attached to the outer side of the liquid floating slider, and an auxiliary guide rail is installed on the second guide rail of the bottom layer, and the auxiliary guide rail is attached to the inner side of another liquid floating slider.

[0014] As a further solution of the utility model: before assembling the upper slide plate, an adjustment tool is movably placed above the liquid floating slide block connected to the second guide rail of the bottom layer.

[0015] As a further solution of the utility model: the shape of the adjustment tool is the same as the left side structure of the upper slide.

[0016] The beneficial effects of the utility model are as follows: by arranging a bottom first guide rail and a bottom second guide rail at the bottom of the hydraulic guide rail, a gap is left between the bottom first guide rail and the bottom second guide rail for installing a brake mechanism and a linear motor, so that the entire hydraulic guide rail structure is more compact, which not only saves space but also saves materials, and at the same time reduces the requirements for equipment for processing the parts; before assembling the upper slide, an adjustment tool is provided to adjust the installation position of the upper guide rail, the middle guide rail and the auxiliary guide rail on the bottom second guide rail on the left side, and then after installing the upper slide, the installation position of the bottom first guide rail, the upper guide rail and the middle guide rail on the right side are adjusted with the guide rail on the left side as the base, which can solve the problem that there is no unified reference after the bottom guide rail is split and the straightness and parallelism of the two sides of the guide rail are difficult to adjust. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall cross-sectional structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the left side cross-sectional structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the right side cross-sectional structure of the utility model.

[0020] In the figure: 1. upper slide, 2. liquid floating slider, 3. upper guide rail, 4. middle guide rail, 5. bottom first guide rail, 6. bottom second guide rail, 7. linear motor, 8. brake mechanism, 9. positioning screw, 10. fixing bolt, 11. adjustment tooling, 12. auxiliary guide rail, 13. clamping bar. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Embodiment 1, as Figures 1 to 3 As shown, a hydraulic guide rail of a medium-sized ultra-precision machine tool includes a liquid-floating slider 2 and a guide rail assembly. The liquid-floating slider 2 is movably connected to the guide rail assembly. An upper slide plate 1 is installed on the upper surface of the liquid-floating slider 2. The gap of the guide rail assembly is filled with pressure oil.

[0023] The guide rail assembly includes an upper guide rail 3, a middle guide rail 4, a bottom first guide rail 5 and a bottom second guide rail 6. The bottom first guide rail 5 and the bottom second guide rail 6 are respectively located on the left and right sides of the hydraulic guide rail. The bottom first guide rail 5 and the bottom second guide rail 6 are placed on a medium-sized ultra-precision machine tool. The middle guide rail 4 is respectively connected to the top of the bottom first guide rail 5 and the bottom second guide rail 6. The upper guide rail 3 is installed above the middle guide rail 4.

[0024] Two liquid floating sliders 2 are provided, and one of the liquid floating sliders 2 is clamped between the bottom first guide rail 5 and the upper guide rail 3 , and the other liquid floating slider 2 is clamped between the bottom second guide rail 6 and the upper guide rail 3 .

[0025] Embodiment 2, in addition to all the technical features of Embodiment 1, this embodiment also includes: liquid floating sliders 2 are respectively arranged on both sides of the bottom of the upper slide 1, and the upper slide 1 and the liquid floating slider 2 are fixedly connected by positioning screws 9, so that the upper slide 1 can be driven to move by the liquid floating slider 2, and when the pressure oil is passed through, the liquid floating slider 2 can float in the guide rail assembly to reduce friction, ensuring that the liquid floating slider 2 can slide more smoothly and precisely.

[0026] The bottom first guide rail 5 and the bottom second guide rail 6 are fixedly connected to the medium-sized ultra-precision machine tool by fixing bolts 10, and a brake mechanism 8 is also installed on the machine tool. The inner side surface of one liquid floating slider 2 is integrally connected with a clamping bar 13, and the clamping parts of the brake mechanism 8 are arranged on the upper and lower sides of the clamping bar 13, so that the hydraulic guide rail can be firmly assembled on the machine tool, and the clamping bar 13 of the liquid floating slider 2 can be clamped by the brake mechanism 8, so that the position of the liquid floating slider 2 after movement can be fixed, thereby ensuring the accuracy of the movement range.

[0027] The brake mechanism 8 includes, but is not limited to, an electro-hydraulic brake, an electromagnetic brake, and a permanent magnet motor brake.

[0028] The brake mechanism 8 is located on the side of the bottom first guide rail 5 close to the bottom second guide rail 6, and a linear motor 7 is provided on the side of the bottom second guide rail 6 close to the bottom first guide rail 5. By leaving a gap between the bottom first guide rail 5 and the bottom second guide rail 6 for installing the brake mechanism 8 and the linear motor 7, the entire hydraulic guide rail structure is made more compact, which not only saves space, but also saves materials, and at the same time reduces the equipment requirements for processing the parts.

[0029] Embodiment 3, in addition to all the technical features of Embodiment 1, this embodiment also includes: the stator part of the linear motor 7 is fixedly connected to the bottom second guide rail 6, and the mover part of the linear motor 7 is fixedly connected to the upper slide 1, so as to provide driving force to the upper slide 1, thereby driving the upper slide 1 to move along the trajectory of the guide rail assembly.

[0030] The middle guide rails 4 are respectively attached to the outer side surfaces of the liquid floating sliders 2, and auxiliary guide rails 12 are also installed on the bottom second guide rails 6. The auxiliary guide rails 12 are attached to the inner side surfaces of another liquid floating slider 2 to form a four-sided surrounding support for the liquid floating slider 2, ensuring that the liquid floating slider 2 can maintain an ultra-precise moving trajectory.

[0031] Before assembling the upper slide 1, an adjustment tool 11 is movably placed above the liquid floating slider 2 connected to the bottom second guide rail 6. The adjustment tool 11 can be used to adjust the installation positions of the upper guide rail 3, the middle guide rail 4 and the auxiliary guide rail 12 on the bottom second guide rail 6 on the left side. Then, after installing the upper slide 1, the installation positions of the bottom first guide rail 5, the upper guide rail 3 and the middle guide rail 4 on the right side are adjusted with the left guide rail as the base. This can solve the problem that there is no unified reference after the bottom guide rail is split, and it is difficult to adjust the straightness and parallelism of the two sides of the guide rail.

[0032] The shape of the adjusting tool 11 is the same as the left side structure of the upper slide 1.

[0033] The specific working process of the hydraulic guide rail is as follows: first, the bottom second guide rail 6 is connected to the base of the machine tool; secondly, the liquid floating slider 2, the upper guide rail 3, the middle guide rail 4 and the auxiliary guide rail 11 are assembled on the bottom second guide rail 6 and the bottom first guide rail 5; then, before assembling the upper slide 1, an adjustment tool 11 is placed on the movable card above the liquid floating slider 2 connected to the bottom second guide rail 6, and the installation position of the upper guide rail 3, the middle guide rail 4 and the auxiliary guide rail 12 on the bottom second guide rail 6 on the left side can be adjusted by adjusting the tool 11; finally, after installing the upper slide 1, the installation position of the bottom first guide rail 5, the upper guide rail 3 and the middle guide rail 4 on the right side is adjusted with the left guide rail as the base, and a gap is left between the bottom first guide rail 5 and the bottom second guide rail 6 for installing the brake mechanism 8 and the linear motor 7, so that the entire hydraulic guide rail structure is more compact and space is saved.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A hydraulic guide rail for a medium-sized ultra-precision machine tool, comprising a liquid-floating slide block (2) and a guide rail assembly, characterized in that: The liquid floating slider (2) is movably connected to the guide rail assembly, an upper slide plate (1) is installed on the upper surface of the liquid floating slider (2), and the gap of the guide rail assembly is filled with pressure oil; The guide rail assembly comprises an upper guide rail (3), a middle guide rail (4), a bottom first guide rail (5) and a bottom second guide rail (6); the bottom first guide rail (5) and the bottom second guide rail (6) are respectively located on the left and right sides of the hydraulic guide rail; the bottom first guide rail (5) and the bottom second guide rail (6) are placed on a medium-sized ultra-precision machine tool; the middle guide rail (4) is respectively connected to the top of the bottom first guide rail (5) and the bottom second guide rail (6); and the upper guide rail (3) is installed above the middle guide rail (4); Two liquid floating sliders (2) are provided, and one of the liquid floating sliders (2) is clamped between the bottom first guide rail (5) and the upper guide rail (3), and the other liquid floating slider (2) is clamped between the bottom second guide rail (6) and the upper guide rail (3).

2. The hydraulic guide rail according to claim 1, characterized in that: The liquid floating sliders (2) are respectively arranged on both sides of the bottom of the upper slide plate (1), and the upper slide plate (1) and the liquid floating sliders (2) are fixedly connected via positioning screws (9).

3. The hydraulic guide rail according to claim 1, characterized in that: The bottom first guide rail (5) and the bottom second guide rail (6) are both fixedly connected to the medium-sized ultra-precision machine tool via fixing bolts (10), and a brake mechanism (8) is also installed on the machine tool, wherein the inner side surface of one of the liquid floating sliders (2) is integrally connected with a clamping strip (13), and the clamping parts of the brake mechanism (8) are arranged on the upper and lower sides of the clamping strip (13).

4. The hydraulic guide rail according to claim 3, characterized in that: The holding brake mechanism (8) includes, but is not limited to, an electro-hydraulic holding brake, an electromagnetic holding brake, and a permanent magnet motor holding brake.

5. The hydraulic guide rail according to claim 3, characterized in that: The holding brake mechanism (8) is located on a side of the bottom first guide rail (5) close to the bottom second guide rail (6), and a linear motor (7) is provided on a side of the bottom second guide rail (6) close to the bottom first guide rail (5).

6. The hydraulic guide rail according to claim 5, characterized in that: The stator part of the linear motor (7) is fixedly connected to the bottom second guide rail (6), and the mover part of the linear motor (7) is fixedly connected to the upper slide plate (1).

7. The hydraulic guide rail according to claim 1, characterized in that: The middle guide rails (4) are respectively attached to the outer side surfaces of the liquid floating sliders (2), and an auxiliary guide rail (12) is also installed on the bottom second guide rail (6), and the auxiliary guide rail (12) is attached to the inner side surface of another liquid floating slider (2).

8. The hydraulic guide rail according to claim 1, characterized in that: Before assembling the upper slide plate (1), an adjustment tool (11) is movably placed above the liquid floating slide block (2) connected to the bottom second guide rail (6).

9. The hydraulic guide rail according to claim 8, characterized in that: The shape of the adjusting tool (11) is the same as the left side structure of the upper slide plate (1).

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