Precise machine tool for drilling and milling

Abstract

The utility model belongs to the technical field of multifunctional machine tools, and particularly relates to a precision machine tool for drilling and milling, which comprises a base, a worktable positioned on the surface of the base and an L-shaped upright post mounted on the surface of the base, a tool magazine is mounted at the bottom of the upright post, a tool magazine support is mounted at the top of the upright post, and one side of the tool magazine support is connected with the tool magazine. Triangular reinforcing ribs and rectangular reinforcing ribs are fixedly connected to the two sides of the stand column, the triangular reinforcing ribs are located on the tops of the rectangular reinforcing ribs, and the triangular reinforcing ribs and the rectangular reinforcing ribs are arranged at equal intervals and correspond to each other. According to the precision machine tool for drilling and milling, by arranging the triangular reinforcing ribs and the rectangular reinforcing ribs, the rigidity of the stand column of the machine tool can be improved, deformation and vibration of the stand column are reduced, and the stability and cutting precision of the machine tool are improved.

Description

Technical Field

[0001] This utility model relates to the field of multifunctional machine tool technology, and in particular to a precision machine tool for drilling and milling. Background Art

[0002] Drilling and milling is a multi-functional machining method that can complete drilling and milling in one operation. This method requires the use of precision machine tools to achieve high-quality and high-precision machining of the workpiece. It can perform drilling, tapping, and milling operations and is widely used in the processing of small plate parts, disc-shaped parts, and shell-shaped parts in industries such as digital electronic products, 3C industry, aviation, automobiles, small molds, light industry and textiles, and medical devices.

[0003] Currently, precision machine tools used for drilling and milling are subjected to significant mechanical loads and cutting forces during high-speed rotation and cutting operations. However, some of these machine tools have a single-support structure for their columns, which has low rigidity. This structure may not be able to fully withstand the large amounts of cutting forces and mechanical loads, leading to machine tool deformation and affecting machining accuracy and quality. Therefore, there is an urgent need for a precision machine tool for drilling and milling to solve these problems. Utility Model Content

[0004] In order to overcome the defects of the prior art mentioned above, the inventors conducted in-depth research and, after a great deal of creative work, completed this utility model.

[0005] Specifically, the technical problem to be solved by this utility model is to provide a precision machine tool for drilling and milling, so as to solve the technical problem that the current single support structure has low rigidity, which will cause the machine tool to deform during actual use, affecting the machining accuracy and quality.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A precision machine tool for drilling and milling includes a base, a worktable located on the surface of the base, and a column mounted on the surface of the base. The column is L-shaped, with a tool magazine installed at the bottom and a tool magazine bracket installed at the top. One side of the tool magazine bracket is connected to the tool magazine. Triangular reinforcing ribs and rectangular reinforcing ribs are fixedly connected to both sides of the column. The triangular reinforcing ribs are located at the top of the rectangular reinforcing ribs. The triangular and rectangular reinforcing ribs are arranged at equal intervals and correspond to each other.

[0008] As an improved technical solution, a saddle is mounted on the surface of the base, the saddle is located at the bottom of the worktable, the saddle is slidably connected to the base, an X-axis motor is fixedly connected to one end of the saddle, an X-axis lead screw is mounted on the output end of the X-axis motor, and the worktable is threadedly connected to the X-axis lead screw.

[0009] As an improved technical solution, a Y-axis motor is mounted on the surface of the base, a motor mount is mounted on one end of the Y-axis motor, the motor mount is fixedly connected to the base, and a Y-axis lead screw is mounted on the output end of the Y-axis. The Y-axis lead screw is located at the bottom of the saddle and is threadedly connected to it.

[0010] As an improved technical solution, a Z-axis motor is installed on the top of the column, and a Z-axis lead screw is installed at the output end of the Z-axis motor. The Z-axis lead screw is located on the inner side of the column, and a bearing seat is provided at the bottom of the Z-axis lead screw. The bearing seats are located on both sides of the Z-axis lead screw and correspond to each other.

[0011] As an improved technical solution, a spindle motor is fixedly connected to the top of the column. The spindle motor is located on one side of the Z-axis motor. The output end of the spindle motor is connected to a spindle box, which is located outside the Z-axis lead screw.

[0012] As an improved technical solution, the bottom of the base is equipped with feet, which are connected to the base by foot screws, and the feet are arranged at equal intervals.

[0013] As an improved technical solution, a nitrogen tank bracket is fixedly connected to one side of the column, a nitrogen tank is installed on the surface of the nitrogen tank bracket, and a nitrogen cylinder is provided on the top of the column.

[0014] After adopting the above technical solution, the beneficial effects of this utility model are:

[0015] 1. This utility model, by setting triangular and rectangular reinforcing ribs, can increase the rigidity of the machine tool column, reduce column deformation and vibration, and improve the stability and cutting accuracy of the machine tool.

[0016] 2. This utility model, by using linear roller guides for all X / Y / Z axes, has the characteristics of high rigidity, low noise, and low friction, enabling rapid displacement and achieving optimal precision. Attached Figure Description

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0018] Figure 1 This is a schematic diagram of the overall structure of the precision machine tool for drilling and milling according to this utility model.

[0019] Figure 2 This is a schematic diagram of the column and Z-axis lead screw of the precision machine tool for drilling and milling of this utility model.

[0020] Figure 3 This is a schematic diagram of the X-axis motor and Y-axis motor of the precision machine tool for drilling and milling of this utility model.

[0021] Figure 4 This is a schematic diagram of the base structure of the precision machine tool for drilling and milling according to this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Base; 2. Worktable; 3. Column; 301. Triangular reinforcing rib; 302. Rectangular reinforcing rib; 4. Tool magazine; 5. Tool magazine bracket; 6. Saddle; 7. X-axis motor; 8. X-axis lead screw; 9. Y-axis motor; 10. Motor mount; 11. Y-axis lead screw; 12. Z-axis motor; 13. Z-axis lead screw; 14. Bearing housing; 15. Spindle motor; 16. Spindle box; 17. Foot; 18. Anchor bolt; 19. Nitrogen tank bracket; 20. Nitrogen tank; 21. Nitrogen cylinder. DETAILED DESCRIPTION

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0026] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0027] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0028] like Figures 1 to 4 As shown in the figure, this embodiment provides a precision machine tool for drilling and milling. The precision machine tool for drilling and milling includes a base 1, a worktable 2 located on the surface of the base 1, and a column 3 mounted on the surface of the base 1. The column 3 is located on one side of the worktable 2 and is L-shaped. A tool magazine 4 is installed at the bottom of the column 3 and a tool magazine bracket 5 is installed at the top of the column 3. One side of the tool magazine bracket 5 is connected to the tool magazine 4.

[0029] Both sides of the column 3 are fixedly connected with triangular reinforcing ribs 301 and rectangular reinforcing ribs 302. The triangular reinforcing ribs 301 are located on top of the rectangular reinforcing ribs 302. The triangular reinforcing ribs 301 and rectangular reinforcing ribs 302 are arranged at equal intervals and correspond to each other. Based on the extremely high structural strength of triangles, the triangular reinforcing ribs 301 can effectively improve the strength and stability of the column 3, reduce its deformation and vibration, and improve the cutting accuracy and stability of the machine tool. The rectangular reinforcing ribs 302 can increase the bending strength of the column 3, reduce bending and deformation during processing, thereby improving processing quality and work efficiency. The equidistant arrangement and corresponding arrangement of the triangular reinforcing ribs 301 and rectangular reinforcing ribs 302 can complement and strengthen the functions of the two structural components, while increasing the stability of the column 3. The addition of triangular stiffeners 301 and rectangular stiffeners 302 increases the rigidity of the machine tool column 3, reduces its deformation and vibration, and improves its stability and cutting accuracy without affecting its performance. The column 3 is also a triangular box-shaped structure, which enhances its mechanical strength. The castings, analyzed by computer using finite element analysis, combined with the triangular and rectangular stiffeners 301, improve mechanical rigidity. Furthermore, all castings undergo electric furnace tempering, rough machining, and vibration aging treatment, followed by two artificial aging treatments to eliminate stress and ensure the machine tool maintains high precision and service life over a long period.

[0030] A saddle 6 is mounted on the surface of the base 1. The saddle 6 is located at the bottom of the worktable 2 and is slidably connected to the base 1. An X-axis motor 7 is fixedly connected to one end of the saddle 6. An X-axis lead screw 8 is mounted on the output end of the X-axis motor 7. The worktable 2 is threadedly connected to the X-axis lead screw 8, and the worktable 2 is slidably connected to the saddle 6 via the X-axis lead screw 8. Figure 1 As shown, the base 1 and the saddle 6 are connected by linear roller guides, which ensures that the saddle 6 maintains stability in both vertical and horizontal directions. During operation, it can eliminate the influence of factors such as material deformation and temperature changes, thereby ensuring the high precision and high efficiency of the machine tool. The saddle 6 can increase the rigidity and stability of the machine tool structure, reduce the vibration and deformation generated by the machine tool during processing, thereby ensuring processing accuracy and efficiency. It can also provide a stable support structure for the machine tool, reduce the noise and vibration of the machine tool during operation, and improve the working environment and operating comfort.

[0031] A Y-axis motor 9 is mounted on the surface of the base 1. A motor base 10 is mounted on one end of the Y-axis motor 9. The motor base 10 is fixedly connected to the base 1. A Y-axis lead screw 11 is mounted on the output end of the Y-axis motor 9. The Y-axis lead screw 11 is located at the bottom of the saddle 6 and is threadedly connected to it. The Y-axis motor 9 is used to drive the Y-axis lead screw 11 to rotate so as to drive the saddle 6 and the worktable 2 to move along the Y-axis direction.

[0032] A Z-axis motor 12 is installed on the top of the column 3. A Z-axis lead screw 13 is installed at the output end of the Z-axis motor 12. The Z-axis lead screw 13 is located inside the column 3. A bearing seat 14 is provided at the bottom of the Z-axis lead screw 13. The bearing seats 14 are located on both sides of the Z-axis lead screw 13 and correspond to each other. The bearing seats 14 are used to fix the Z-axis lead screw 13, thereby ensuring the smoothness and accuracy of the Z-axis movement.

[0033] A spindle motor 15 is fixedly connected to the top of column 3. The spindle motor 15 is located to one side of the Z-axis motor 12. The output end of the spindle motor 15 is connected to a spindle box 16, which is located outside the Z-axis lead screw 13. The spindle motor 15 and the spindle box 16 are connected by a coaxial shaft, which transmits the power of the spindle motor 15 to the spindle box 16. The spindle box 16 is connected to the Z-axis lead screw 13 via a pillow bearing and a coupling. A pillow shaft is installed at the lower end of the spindle box 16. The spindle box 16 supports the spindle housing 16 and bears the load of the Z-axis lead screw 13. In addition, the spindle housing 16 is connected to the Z-axis lead screw 13 through a coupling, which can also play a role in shock absorption and torque transmission. At the same time, all X / Y / Z axes adopt linear roller guides, which have the characteristics of high rigidity, low noise and low friction, enabling rapid displacement and obtaining the best accuracy. The positioning accuracy of the three axes fully meets the ISO-230-2 standard, enabling rapid X / Y / Z displacement of 25 / 25 / 25 meters / minute.

[0034] The bottom of the base 1 is equipped with feet 17, which are connected to the base 1 by feet screws 18. The feet 17 are arranged at equal intervals to increase the overall stability of the base 1.

[0035] A nitrogen tank bracket 19 is fixedly connected to one side of the column 3. A nitrogen tank 20 is installed on the surface of the nitrogen tank bracket 19. A nitrogen cylinder 21 is provided on the top of the column 3. The nitrogen tank 20 and the nitrogen cylinder 21 are connected by a pipe. The nitrogen tank 20 serves as a gas source and can provide purer and drier gas to ensure processing quality and efficiency.

[0036] In use, the triangular reinforcing rib 301, based on the extremely high structural strength of the triangle, can improve the strength and stability of the column 3, reduce its deformation and vibration, and improve the cutting accuracy and stability of the machine tool. The rectangular reinforcing rib 302 can increase the bending strength of the column 3, reduce bending and deformation during the processing, thereby improving the processing quality and work efficiency.

[0037] By arranging triangular reinforcing ribs 301 and rectangular reinforcing ribs 302 at equal intervals and corresponding to each other, the two structural components can complement and strengthen each other, thereby increasing the stability and rigidity of the column 3, reducing the deformation and vibration of the column 3, and reducing the consumption of structural materials without affecting the performance of the machine tool, thus achieving the goal of optimizing the structural design. In summary, by setting triangular reinforcing ribs 301 and rectangular reinforcing ribs 302, the rigidity of the machine tool column 3 can be increased, the deformation and vibration of the column 3 can be reduced, and the stability and cutting accuracy of the machine tool can be improved.

[0038] In addition, by using linear roller guides for all X / Y / Z axes, it has the characteristics of high rigidity, low noise, and low friction, which can achieve rapid displacement and obtain the best accuracy.

[0039] All castings on this machine are made of precision HT300 high-grade cast iron. The base is widened, the column is a triangular box structure, the saddle is widened and lengthened, and the heavy-duty full support design ensures structural stability and heavy load capacity during processing.

[0040] The castings are analyzed by computer using finite element analysis, and the reasonable structural strength and the combination of reinforcing ribs improve the rigidity of the machinery.

[0041] All castings undergo electric furnace tempering and rough machining followed by vibration aging treatment. Two artificial aging treatments are then performed to eliminate stress and ensure that the machine tool can maintain high precision requirements and service life for a long time.

[0042] The positioning accuracy of the 3-axis fully complies with the ISO-230-2 standard;

[0043] Rapid displacement X / Y / Z: 25 / 25 / 25 meters / minute.

[0044] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A precision machine tool for drilling and milling, comprising a base (1), a worktable (2) located on the surface of the base (1), and a column (3) mounted on the surface of the base (1), characterized in that: The column (3) is L-shaped, and a tool magazine (4) is installed at the bottom of the column (3). A tool magazine bracket (5) is installed at the top of the column (3). One side of the tool magazine bracket (5) is connected to the tool magazine (4). Both sides of the column (3) are fixedly connected with triangular reinforcing ribs (301) and rectangular reinforcing ribs (302). The triangular reinforcing ribs (301) are located at the top of the rectangular reinforcing ribs (302). The triangular reinforcing ribs (301) and the rectangular reinforcing ribs (302) are arranged at equal intervals and correspond to each other.

2. The precision machine tool for drilling and milling according to claim 1, characterized in that: A saddle (6) is mounted on the surface of the base (1). The saddle (6) is located at the bottom of the workbench (2). The saddle (6) is slidably connected to the base (1). An X-axis motor (7) is fixedly connected to one end of the saddle (6). An X-axis lead screw (8) is mounted on the output end of the X-axis motor (7). The workbench (2) is threadedly connected to the X-axis lead screw (8).

3. The precision machine tool for drilling and milling according to claim 2, characterized in that: A Y-axis motor (9) is mounted on the surface of the base (1). A motor mount (10) is mounted on one end of the Y-axis motor (9). The motor mount (10) is fixedly connected to the base (1). A Y-axis lead screw (11) is mounted on the output end of the Y-axis motor (9). The Y-axis lead screw (11) is located at the bottom of the saddle (6) and is threadedly connected to it.

4. The precision machine tool for drilling and milling according to claim 3, characterized in that: A Z-axis motor (12) is installed on the top of the column (3). A Z-axis lead screw (13) is installed at the output end of the Z-axis motor (12). The Z-axis lead screw (13) is located on the inner side of the column (3). A bearing seat (14) is provided at the bottom of the Z-axis lead screw (13). The bearing seat (14) is located on both sides of the Z-axis lead screw (13) and corresponds to each other.

5. The precision machine tool for drilling and milling according to claim 4, characterized in that: A spindle motor (15) is fixedly connected to the top of the column (3). The spindle motor (15) is located on one side of the Z-axis motor (12). The output end of the spindle motor (15) is connected to a spindle box (16). The spindle box (16) is located outside the Z-axis lead screw (13).

6. The precision machine tool for drilling and milling according to claim 5, characterized in that: The base (1) is equipped with feet (17) at its bottom. The feet (17) are connected to the base (1) by feet screws (18). The feet (17) are arranged at equal intervals.

7. The precision machine tool for drilling and milling according to claim 6, characterized in that: A nitrogen tank bracket (19) is fixedly connected to one side of the column (3), a nitrogen tank (20) is installed on the surface of the nitrogen tank bracket (19), and a nitrogen cylinder (21) is provided on the top of the column (3).

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