Numerical control machining tool

Abstract

The utility model discloses a numerical control machining tool. The numerical control machining tool comprises a base, a first guide rail assembly, a linear motor and a machining table. The first guide rail assembly at least comprises a first guide rail and a second guide rail, the first guide rail and the second guide rail are arranged on the base in parallel and at intervals, and a preset gap is formed between the first guide rail and the second guide rail; the linear motor comprises a stator and a mover, the stator is arranged in the preset gap, the mover is arranged on the stator in a sliding mode, and the sliding direction of the mover is parallel to the extending direction of the first guide rail and the extending direction of the second guide rail; the machining table is fixedly connected to the rotor and can slide on the first guide rail and the second guide rail. The numerical control machining tool at least can solve the problems that the dynamic response performance of the numerical control machining tool is insufficient, the machining precision is reduced along with the use time, and maintenance is complex.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machine tools, and particularly to a numerical control machining tool. Background Technique

[0002] Numerical control machining tools are important equipment in modern manufacturing, and are widely used in machining, die manufacturing and production of precision components. Traditional numerical control machining tools mainly adopt the transmission mode of ball screws, which convert rotational motion into linear motion to achieve precise positioning and motion control of the numerical control machining tools. In the development process of numerical control machining tools, the traditional screw drive mode has certain limitations due to its structure and working principle. These limitations are mainly manifested in insufficient dynamic response performance, reduction of machining accuracy over time, and complex maintenance.

[0003] Linear motors can directly generate linear motion without an intermediate conversion mechanism. Therefore, applying linear motors to numerical control machining tools can reduce the moment of inertia and system stiffness during the working process of the numerical control machining tools, and improve the rapid response characteristics and precise positioning ability at high speeds of the numerical control machining tools. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a numerical control machining tool, which can at least solve the problems such as insufficient dynamic response performance, reduction of machining accuracy over time, and complex maintenance of the numerical control machining tool.

[0005] According to one aspect of the utility model, a numerical control machining tool is provided, including:

[0006] Base;

[0007] The first guide rail assembly, the first guide rail assembly at least includes a first guide rail and a second guide rail, the first guide rail and the second guide rail are arranged in parallel and at intervals on the base, and a predetermined gap is arranged between the first guide rail and the second guide rail;

[0008] Linear motor, the linear motor includes a stator and a mover, the stator is arranged in the predetermined gap, the mover is slidably arranged on the stator, and the sliding direction of the mover is parallel to the extending directions of the first guide rail and the second guide rail;

[0009] Machining table, the machining table is fixedly connected to the mover and can slide on the first guide rail and the second guide rail.

[0010] Furthermore, the numerical control machining tool further includes:

[0011] A diversion groove, the diversion groove is arranged on the base, and the extending direction of the diversion groove is parallel to the extending directions of the first guide rail and the second guide rail. Along the extending directions of the first guide rail and the second guide rail, the depth of the diversion groove gradually increases.

[0012] Further, the numerical control machine tool further includes:

[0013] A mounting seat, the mounting seat is arranged in the diversion groove and fixedly connected to the bottom of the diversion groove, and the mounting seat is at least used for mounting the linear motor and the first guide rail assembly.

[0014] Further, the numerical control machine tool further includes:

[0015] A first limit block and a second limit block, the first limit block and the second limit block are arranged on the mounting seat at intervals along the extending direction of the first guide rail assembly, and the mover is located between the first limit block and the second limit block.

[0016] Further, the cross-sectional area of the mounting seat perpendicular to the extending direction of the first guide rail assembly is U-shaped.

[0017] Further, the numerical control machine tool further includes:

[0018] A grating scale, the grating scale includes a scale body and a connecting block, the scale body is arranged between the first guide rail assembly and the stator, and the length direction of the scale body is parallel to the extending directions of the first guide rail and the second guide rail, and the connecting block is fixed to the processing table and slides along the length direction of the scale body.

[0019] Further, a first slider and a second slider are fixedly arranged at the bottom of the processing table, the first slider is partially nested in the first guide rail and slides along the extending direction of the first guide rail, and the second slider is partially nested in the second guide rail and slides along the extending direction of the second guide rail.

[0020] Further, the first slider includes at least two sliders, and the second slider includes at least two sliders.

[0021] Further, a gantry is also arranged on the base, the gantry is fixedly connected to the base, and the gantry is used for mounting a processing component.

[0022] Further, the processing assembly includes a second guide rail assembly, a sliding block, a lifting assembly, and a processing mechanism. The second guide rail assembly is disposed on the gantry bridge and extends in a direction perpendicular to the first guide rail assembly. The sliding block is disposed on the second guide rail assembly and can slide along the extending direction of the guide rail assembly. The lifting assembly is disposed on the sliding block and can lift along the height direction of the gantry bridge. The processing mechanism is installed at the bottom of the lifting assembly.

[0023] In the present utility model, the first guide rail and the second guide rail are parallel and spaced apart on the base. A predetermined gap is formed in the area between the first guide rail and the second guide rail. The stator of the linear motor is installed in the predetermined gap and fixed to the base. When the stator is installed in the predetermined gap, it is necessary to ensure that there is a distance between the stator and the first guide rail and the second guide rail respectively, so as to ensure that when the mover slides on the stator along the extending direction of the first guide rail and the second guide rail (i.e., the length direction of the stator), the movement of the mover will not be interfered by the first guide rail and the second guide rail. In addition, after the linear motor is installed in the predetermined gap, it is also necessary to ensure that the upper surface of the mover is higher than the plane where the upper surface of the first guide rail assembly is located. Then the processing table is installed and fixedly connected to the upper surface of the mover. When the mover of the linear motor slides along the extending direction of the first guide rail and the second guide rail, the processing table can slide along the length direction of the stator with the mover. And the movements of the mover and the processing table are not interfered by the first guide rail and the second guide rail. When using the numerical control machine tool of the present application to process parts, the workpiece to be processed is fixed on the processing table, and the workpiece to be processed can slide with the processing table to the position to be processed.

[0024] That is to say, compared with the existing numerical control machine tools, the numerical control machine tool of the present application uses a linear motor instead of the conventional lead screw drive mechanism, which can solve the problems of insufficient dynamic response performance, reduction of machining accuracy with the use time, and complex maintenance of the existing numerical control machine tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present utility model and constitute a part of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0026] Figure 1 is a structural diagram of the first perspective when the base of the numerical control machine tool disclosed in the embodiment of the present utility model does not install the processing table;

[0027] Figure 2 is a structural diagram of the numerical control machine tool disclosed in the embodiment of the present utility model when the base is installed with the processing table;

[0028] Figure 3Structural diagram of the first perspective when the base of the numerically controlled machine tool disclosed in the embodiment of the present utility model is installed with a processing table;

[0029] Figure 4 Structural diagram of the numerically controlled machine tool disclosed in the embodiment of the present utility model when the processing table is not installed;

[0030] Figure 5 Structural diagram of the numerically controlled machine tool disclosed in the embodiment of the present utility model when the processing table is installed.

[0031] Among them, the above-mentioned drawings include the following reference numerals:

[0032] 10. Base; 11. Diversion groove; 12. Mounting seat; 13. First limit block; 14. Second limit block; 15. Grating ruler; 151. Ruler body; 152. Connecting block; 20. First guide rail assembly; 201. First guide rail; 202. Second guide rail; 21. Predetermined gap; 30. Linear motor; 301. Stator; 302. Rotor; 40. Processing table; 41. First slider; 42. Second slider; 50. Processing assembly; 51. Second guide rail assembly; 52. Sliding block; 53. Lifting assembly; 54. Processing mechanism; 60. Gantry. Detailed implementation manners

[0033] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments may be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0034] It should be noted that the terms used herein are only for describing the specific implementation manners and are not intended to limit the exemplary embodiments according to the present utility model. As used herein, unless otherwise clearly specified in the context, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0035] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be understood that for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0036] In order to solve the problems of insufficient dynamic response performance, reduction of machining accuracy over time, and complex maintenance when the existing numerical control machine tools adopt ball screw drive, according to the embodiments of the present application, a numerical control machine tool is provided. The numerical control machine tool of the present application will be introduced in detail below with reference to the accompanying drawings.

[0037] See Figures 1 to 5 As shown, according to the embodiments of the present utility model, a numerical control machine tool is provided, which includes a base 10, a first guide rail assembly 20, a linear motor 30, and a machining table 40.

[0038] Among them, the first guide rail assembly 20 at least includes a first guide rail 201 and a second guide rail 202. The first guide rail 201 and the second guide rail 202 are parallel and spaced apart on the base 10, and a predetermined gap 21 is provided between the first guide rail 201 and the second guide rail 202. The linear motor 30 includes a stator 301 and a mover 302. The stator 301 is disposed in the predetermined gap 21, the mover 302 is slidably disposed on the stator 301, and the sliding direction of the mover 302 is parallel to the extending directions of the first guide rail 201 and the second guide rail 202. The machining table 40 is fixedly connected to the mover 302 and can slide on the first guide rail 201 and the second guide rail 202.

[0039] In the present application, the first guide rail 201 and the second guide rail 202 are arranged in parallel and at intervals on the base 10. A predetermined gap 21 is formed in the area between the first guide rail 201 and the second guide rail 202. The stator 301 of the linear motor 30 is installed in the predetermined gap 21 and fixed to the base. When the stator 301 is installed in the predetermined gap 21, it is necessary to ensure that there are distances between the stator 301 and the first guide rail 201 and the second guide rail 202 respectively, so as to ensure that when the mover 302 slides on the stator 301 along the extension directions of the first guide rail 201 and the second guide rail 202 (i.e., the length direction of the stator 301), the movement of the mover 302 will not be interfered by the first guide rail 201 and the second guide rail 202. In addition, after the linear motor 30 is installed in the predetermined gap 21, it is also necessary to ensure that the upper surface of the mover 302 is higher than the plane where the upper surface of the first guide rail assembly 20 is located. Then the processing table 40 is installed and fixedly connected to the upper surface of the mover 302. When the mover 302 of the linear motor 30 slides along the extension directions of the first guide rail 201 and the second guide rail 202, the processing table 40 can slide along the length direction of the stator 301 with the mover 302. And the movements of the mover 302 and the processing table 40 are not interfered by the first guide rail 201 and the second guide rail 202. When machining a part using the numerical control machine tool of the present application, the workpiece to be machined (not shown in the figure) is fixed on the processing table 40, and the workpiece to be machined can be slid to the position to be machined along with the sliding of the processing table 40.

[0040] That is to say, compared with the existing numerical control machine tool, the numerical control machine tool of the present application can solve the problems of insufficient dynamic response performance, reduction of machining accuracy with the use time, and complex maintenance of the existing numerical control machine tool by using the linear motor 30 to replace the conventional lead screw transmission mechanism.

[0041] Further, as shown in Figures 1 to 3 the numerical control machine tool of the present application is provided with a diversion groove 11. The diversion groove 11 is arranged on the base 10. The extension direction of the diversion groove 11 is parallel to the extension directions of the first guide rail 201 and the second guide rail 202. Along the extension directions of the first guide rail 201 and the second guide rail 202, the depth of the diversion groove 11 gradually increases.

[0042] Specifically, the diversion groove 11 is provided to divert the debris generated during the operation of the CNC machine tool to the debris collection location (not shown in the figure). In this application, the extension direction of the diversion groove 11 is set to be parallel to the extension directions of the first guide rail 201 and the second guide rail 202. Moreover, along the extension directions of the first guide rail 201 and the second guide rail 202, the depth of the diversion groove 11 gradually increases. That is to say, the bottom surface of the diversion groove 11 is an inclined surface that slopes towards the bottom of the base 10. Such a setting ensures that while all the debris generated during the operation of the CNC machine tool can fall into the interior of the diversion groove 11, the debris can also slide along the bottom surface of the diversion groove 11 to the debris collection location.

[0043] Exemplarily, along the extension directions of the first guide rail 201 and the second guide rail 202, the width of the cross-section of the diversion groove 11 perpendicular to the extension directions of the first guide rail 201 and the second guide rail 202 can be set to gradually decrease or can be set to remain unchanged. This embodiment shows the case where the width of the cross-section gradually decreases. In addition, the base 10 can be processed and manufactured using materials such as cast iron, mineral casting, steel welding structure, and natural marble. This embodiment shows the case where the base 10 is made of natural marble.

[0044] Furthermore, referring to Figures 1 to 3 as shown, the CNC machine tool of this application is provided with a mounting seat 12. The mounting seat 12 is arranged in the diversion groove 11 and fixedly connected to the bottom of the diversion groove 11. The mounting seat 12 is at least used for mounting the linear motor 30 and the first guide rail assembly 20.

[0045] Exemplarily, the mounting seat 12 and the base 10 can be integrally formed or separately formed. When the mounting seat 12 and the base 10 are integrally formed, the mounting seat 12 and the base 10 can be turned from a whole piece of material or can be formed by processing methods such as casting and forging. When the mounting seat 12 and the base 10 are separately formed, after the mounting seat 12 and the base 10 are processed by the above-mentioned processing methods respectively, the mounting seat 12 can be fixed on the base 10 by connection methods such as welding or bonding.

[0046] Furthermore, referring to Figure 1 and Figure 3 as shown, the CNC machine tool of this application is provided with a first limit block 13 and a second limit block 14. The first limit block 13 and the second limit block 14 are arranged on the mounting seat 12 at intervals along the extension direction of the first guide rail assembly 20. The mover 302 is located between the first limit block 13 and the second limit block 14.

[0047] Specifically, although the control system of the CNC machining center of the present application (not shown in the figure) has controlled the sliding range of the machining table 40 by controlling the moving stroke of the mover 302 of the linear motor 30, in order to prevent the machining table 40 from exceeding the sliding range and causing danger when the CNC machining center is running at high speed, the first limit block 13 and the second limit block 14 are used to further limit the sliding range of the machining table 40 of the CNC machining center.

[0048] Further, see Figure 2 , Figure 4 as well as Figure 5 As shown, the cross-sectional area of ​​the mounting seat 12 perpendicular to the extension direction of the first guide rail assembly 20 is U-shaped. The present application sets the cross-sectional area of ​​the mounting seat 12 to be U-shaped, which cleverly provides installation positions for the first guide rail 201 and the second guide rail 202, and also cleverly sets the gap in the middle of the U-shaped structure to the predetermined gap 21 required by the present application, thereby providing a position for the installation of the linear motor 30. At the same time, the U-shaped structure is relatively simple, occupies less space, and is also convenient for the operator to clean up the debris remaining on the mounting seat 12 and the base 10 after the use of the CNC machine tool.

[0049] Further, see Figures 2 to 4 As shown, the CNC machining tool of the present application is provided with a grating ruler 15. The grating ruler 15 includes a ruler body 151 and a connecting block 152, the ruler body 151 is arranged between the first guide rail assembly 20 and the stator 301, and the length direction of the ruler body 151 is parallel to the extension direction of the first guide rail 201 and the second guide rail 202, and the connecting block 152 is fixed to the machining table 40 and slides along the length direction of the ruler body 151.

[0050] Exemplarily, the ruler body 151 of the grating ruler 15 can be arranged between the first guide rail 201 and the stator 301, or between the second guide rail 202 and the stator 301. The present application shows the case where the ruler body 151 is arranged between the first guide rail 201 and the stator 301. The stator 301 in this embodiment is installed in the predetermined gap 21, and it is necessary to ensure that the stator 301 is respectively spaced from the first guide rail 201 and the second guide rail 202. The setting of this distance also provides a suitable position for the installation of the ruler body 151. After the ruler body 151 is installed, the connecting block 152 is then fixed on the processing table 40, and the connecting block 152 can slide along the extension direction of the first guide rail 201 and the second guide rail 202 (i.e., the length direction of the ruler body 151) as the processing table 40 slides. The position data of the processing table 40 can be collected by the grating ruler 15 and transmitted to the system of the CNC machine tool, so as to control the processing table 40 to slide and send the workpiece to be processed to the position to be processed.

[0051] Further, see Figure 4 and Figure 5As shown, a first slider 41 and a second slider 42 are fixedly arranged at the bottom of the processing table 40. The first slider 41 is partially nested in the first guide rail 201 and slides along the extension direction of the first guide rail 201. The second slider 42 is partially nested in the second guide rail 202 and slides along the extension direction of the second guide rail 202.

[0052] Specifically, the first slider 41 and the second slider 42 are provided to transfer the weight of the processing table 40 and the workpiece to be processed fixed on the processing table 40 to the first guide rail 201 and the second guide rail 202. If the first slider 41 and the second slider 42 are not provided, the weight of the processing table 40 and the workpiece to be processed fixed on the processing table 40 will be directly borne by the linear motor 30. The linear motor 30 is responsible for sending the processing table 40 to the position to be processed. When the workpiece to be processed on the processing table 40 is very heavy, it will affect the movement of the mover 302 of the linear motor 30. Therefore, in this application, the first slider 41 and the second slider 42 are used to transfer most of the weight of the processing table 40 and the workpiece to be processed fixed on the processing table to the first guide rail 201 and the second guide rail 202, reducing the burden on the linear motor 30 and ensuring that the movement of the mover 302 is not affected.

[0053] Further, referring to Figure 1 and Figure 4 As shown, the first slider 41 includes at least two sliders, and the second slider 42 includes at least two sliders.

[0054] Exemplarily, the number of sliders of the first slider 41 and the second slider 42 can each include two, three, or more than three. This application shows the case where both the first slider 41 and the second slider 42 include two sliders. For the convenience of description, the following description will be based on the case where the number of the first slider 41 and the second slider 42 is both two. Both the first slider 41 and the second slider 42 are arranged on the side of the processing table 40 close to the first guide rail assembly 20. Two sliders of the first slider 41 are partially nested on the first guide rail 201, and two sliders of the second slider 42 are partially nested on the second guide rail 202. The two sliders of the first slider 41 can slide on the first guide rail 201 along the extension direction of the first guide rail 201, and the two sliders of the second slider 42 can slide on the second guide rail 202 along the extension direction of the second guide rail 202. In order to evenly transfer most of the weight of the processing table 40 and the workpiece to be processed fixed on the processing table 40 to the first guide rail assembly 20 in this application, the two sliders of the first slider 41 are symmetric with the two sliders of the second slider 42 with respect to the midline (i.e., the midline of the distance between the first guide rail 201 and the second guide rail 202).

[0055] Further, referring to Figure 4 and Figure 5As shown, a portal bridge 60 is further provided on the base 10. The portal bridge 60 is fixedly connected to the base 10, and the portal bridge 60 is used for installing the processing assembly 50.

[0056] Exemplarily, the portal bridge 60 and the base 10 can be integrally formed or separately formed. When the portal bridge 60 and the base 10 are integrally formed, the portal bridge 60 and the base 10 can be turned from a whole piece of material, or can be formed by processing methods such as casting and forging. When the portal bridge 60 and the base 10 are separately formed, after the portal bridge 60 and the base 10 are respectively processed by the above processing methods, the portal bridge 60 can be fixed on the base 10 by connection methods such as welding or bolt connection. The present application shows the case where the portal bridge 60 is fixed on the base 10 by bolt connection.

[0057] Further, referring to Figure 4 and Figure 5 As shown, the processing assembly 50 includes a second guide rail assembly 51, a sliding block 52, a lifting assembly 53, and a processing mechanism 54. The second guide rail assembly 51 is arranged on the portal bridge 60 and extends in a direction perpendicular to the first guide rail assembly 20. The sliding block 52 is arranged on the second guide rail assembly 51 and can slide along the extension direction of the guide rail assembly. The lifting assembly 53 is arranged on the sliding block 52 and can lift along the height direction of the portal bridge 60. The processing mechanism 54 is installed at the bottom of the lifting assembly 53.

[0058] Specifically, the sliding block 52 can slide along the extension direction of the second guide rail assembly 51 (i.e., the length direction of the second guide rail assembly 51) on the second guide rail assembly 51, and the lifting assembly 53 can lift along the height direction of the portal bridge 60. The lifting of the lifting assembly 53 can drive the processing mechanism 54 arranged on the lifting assembly 53 to lift. The processing assembly 50, in cooperation with components such as the first guide rail assembly 20, the linear motor 30, and the processing table 40 arranged on the base 10, constitutes the numerical control machine tool of the present application.

[0059] As can be known from the above statements: By providing a numerically controlled machine tool composed of a base 10, a first guide rail assembly 20, a linear motor 30, a machining table 40, a machining assembly 50, and a gantry 60, the present application can solve the problems of insufficient dynamic response performance during transmission, reduction of machining accuracy over time, and complex maintenance of existing machine tools. The present application changes the lead screw drive of the conventional numerically controlled machine tool to directly drive the machining table 40 with the linear motor 30. By taking advantage of the fact that the linear motor can directly generate linear motion, the intermediate conversion mechanism in the lead screw drive is omitted, thereby reducing the moment of inertia and system stiffness of the numerically controlled machine tool, and improving the rapid response characteristics and precise positioning ability at high speeds. Moreover, the design of the numerically controlled machine tool of the present application that uses the linear motor 30 simplifies the structure of the numerically controlled machine tool and facilitates the maintenance of the numerically controlled machine tool, thereby overcoming the disadvantages of insufficient dynamic response performance, reduction of machining accuracy over time, and complex maintenance of the conventional numerically controlled machine tool.

[0060] It can be seen that by changing the lead screw drive of the conventional numerically controlled machine tool to directly drive the machining table 40 with the linear motor 30, the present application improves the motion accuracy of the numerically controlled machine tool, enhances the dynamic response performance of the numerically controlled machine tool, simplifies the structure of the numerically controlled machine tool, and reduces the maintenance cost of the numerically controlled machine tool.

[0061] For the sake of convenience of description, spatial relative terms, such as "above...", "over...", "on the upper surface of...", "upper...", etc., can be used here to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to cover different orientations in use or operation in addition to the orientation of the device described in the figure. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned as "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0062] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of differentiating the corresponding components. Without additional statements, the above words have no special meanings, and thus should not be construed as limiting the protection scope of the present utility model.

[0063] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A CNC machine tool, characterized in that: include: Base (10); a first guide rail assembly (20), the first guide rail assembly (20) comprising at least a first guide rail (201) and a second guide rail (202), the first guide rail (201) and the second guide rail (202) being arranged on the base (10) in parallel and spaced apart, and a predetermined gap (21) being arranged between the first guide rail (201) and the second guide rail (202); A linear motor (30), the linear motor (30) comprising a stator (301) and a mover (302), the stator (301) being arranged in the predetermined gap (21), the mover (302) being slidably arranged on the stator (301), and the sliding direction of the mover (302) being parallel to the extension direction of the first guide rail (201) and the second guide rail (202); A processing table (40) is fixedly connected to the mover (302) and can slide on the first guide rail (201) and the second guide rail (202).

2. The CNC machine tool according to claim 1, characterized in that: The CNC machine tool also includes: A flow guide groove (11), wherein the flow guide groove (11) is arranged on the base (10), wherein an extension direction of the flow guide groove (11) is parallel to an extension direction of the first guide rail (201) and the second guide rail (202), and along the extension direction of the first guide rail (201) and the second guide rail (202), a depth of the flow guide groove (11) gradually increases.

3. The CNC machine tool according to claim 2, characterized in that: The CNC machine tool also includes: A mounting seat (12), wherein the mounting seat (12) is disposed in the guide groove (11) and is fixedly connected to the bottom of the guide groove (11), and the mounting seat (12) is used at least to mount the linear motor (30) and the first guide rail assembly (20).

4. The CNC machine tool according to claim 3, characterized in that: The CNC machine tool also includes: A first limit block (13) and a second limit block (14), wherein the first limit block (13) and the second limit block (14) are arranged on the mounting seat (12) at intervals along the extension direction of the first guide rail assembly (20), and the mover (302) is located between the first limit block (13) and the second limit block (14).

5. The CNC machine tool according to claim 3, characterized in that: The cross-sectional area of ​​the mounting seat (12) perpendicular to the extension direction of the first guide rail assembly (20) is U-shaped.

6. The CNC machine tool according to claim 1, characterized in that: The CNC machine tool also includes: A grating ruler (15), the grating ruler (15) comprising a ruler body (151) and a connecting block (152), the ruler body (151) being arranged between the first guide rail assembly (20) and the stator (301), and the length direction of the ruler body (151) being parallel to the extension direction of the first guide rail (201) and the second guide rail (202), and the connecting block (152) being fixed to the processing table (40) and sliding along the length direction of the ruler body (151).

7. The CNC machine tool according to claim 1, characterized in that: A first slider (41) and a second slider (42) are fixedly arranged at the bottom of the processing table (40); the first slider (41) is partially nested in the first guide rail (201) and slides along the extension direction of the first guide rail (201); and the second slider (42) is partially nested in the second guide rail (202) and slides along the extension direction of the second guide rail (202).

8. The numerically controlled machine tool according to claim 7, characterized in that: The first slider (41) includes at least two sliders, and the second slider (42) includes at least two sliders.

9. The numerically controlled machine tool according to any one of claims 1 to 8, characterized in that: A gate bridge (60) is also provided on the base (10), the gate bridge (60) is fixedly connected to the base (10), and the gate bridge (60) is used to install the processing assembly (50).

10. The numerically controlled machine tool according to claim 9, characterized in that: The processing assembly (50) comprises a second guide rail assembly (51), a sliding block (52), a lifting assembly (53) and a processing mechanism (54); the second guide rail assembly (51) is arranged on the gate bridge (60) and extends in a direction perpendicular to the first guide rail assembly (20); the sliding block (52) is arranged on the second guide rail assembly (51) and can slide along the extension direction of the guide rail assembly; the lifting assembly (53) is arranged on the sliding block (52) and can be lifted and lowered in the height direction of the gate bridge (60); and the processing mechanism (54) is installed at the bottom of the lifting assembly (53).

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