High-precision numerical control machining tool

Abstract

The high-precision numerical control machine tool comprises a machine body, a chuck in transmission connection with the surface of the machine body and a workpiece fixedly connected in the chuck, a supporting structure located at the bottom of the chuck is arranged on the surface of the machine body, and the supporting structure comprises a bearing table arranged at the bottom of the chuck. A support is arranged on the surface of the bearing table, the side, away from the bearing table, of the support extends to the bottom of the workpiece, the side, away from the bearing table, of the support is fixedly connected with a lifting frame, the top of the lifting frame makes contact with the bottom of the workpiece, and a transmission structure is arranged on the right side of the machine body. The bearing table is pushed to ascend through the transmission structure, the inclined lifting frame is driven by the support to move synchronously in the moving process of the bearing table, when the support extends to the bottom of a workpiece from the bearing table and makes contact with the bottom of the workpiece through the lifting frame, supporting and positioning of the workpiece are completed, and the phenomenon that the axis of the workpiece deviates is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machine tools, in particular to a high-precision numerical control machine tool. Background Technique

[0002] A numerical control machine tool, also known as a CNC machine tool, is a machine tool that uses digital information to achieve automatic control. It writes the relevant information of the machined part (such as the dimensional parameters of the relative movement trajectory of the workpiece and the tool, the process parameters of cutting, etc.) into a machining program with a specified code, and then inputs it into the numerical control device. After analysis and processing by the numerical control device, instructions are issued for automatic machining.

[0003] For example, the patent application number disclosed on the Chinese Patent Network is: 202210126445.9, and the patent name is: A numerical control machine tool, including a main body, a cooling box is fixed inside the main body, a supercharging motor is arranged on the top surface of the cooling box. While the supercharging motor drives the screw rod to rotate, as the mounting plate moves downward between the fixing plates, the piston plate in the cooling box also moves downward. When the piston plate moves downward in close contact with the inner wall of the cooling box, under the action of the pressure difference, the coolant containing cutting chips quickly passes through the filter plate, and the magnitude of the pressure difference depends on the rotation speed of the supercharging motor. This design solves the situation that when the numerical control machine tool processes a workpiece, due to the slow filtering speed of the coolant, the spraying rate of the coolant is restricted, affecting the machining efficiency of the workpiece. By controlling the filtering speed of the cutting chips in the coolant during the recycling process, it cooperates with the machining speed of the numerical control machine tool for the workpiece, improving the working efficiency of the numerical control machine tool.

[0004] However, the existing method of fixing workpieces on machine tools is relatively single. It mainly relies on manual lifting and then uses a chuck for extrusion and fixation. Longer workpieces are prone to tilting during the extrusion installation process, resulting in the workpiece having an axial offset and affecting the machining accuracy.

[0005] Therefore, it is necessary to design and transform a high-precision numerical control machine tool. Content of the Utility Model

[0006] To solve the problems raised in the above background technique, the purpose of the present utility model is to provide a high-precision numerical control machine tool, which has the advantage of improving the installation accuracy, and solves the problem that the existing method of fixing workpieces on machine tools is relatively single. It mainly relies on manual lifting and then uses a chuck for extrusion and fixation. Longer workpieces are prone to tilting during the extrusion installation process, resulting in the workpiece having an axial offset and affecting the machining accuracy.

[0007] To achieve the above purpose, the present utility model provides the following technical solution: A high-precision numerical control machine tool, including a machine body;

[0008] A chuck transmission-connected to the surface of the machine body;

[0009] A workpiece fixedly connected inside the chuck;

[0010] A support structure is provided on the surface of the machine body at the bottom of the chuck. The support structure includes a bearing platform arranged at the bottom of the chuck. A bracket is arranged on the surface of the bearing platform. One side of the bracket away from the bearing platform extends to the bottom of the workpiece. A lifting frame is fixedly connected to one side of the bracket away from the bearing platform. The top of the lifting frame contacts the bottom of the workpiece. A transmission structure is arranged on the right side of the machine body, and the transmission structure can drive the bearing platform to rise and fall.

[0011] Preferably, the transmission structure includes a connection frame fixedly connected to the surface of the machine body. A screw rod is movably connected inside the connection frame through a bearing. The bearing platform is sleeved on the surface of the screw rod and is threadedly connected to the screw rod.

[0012] Preferably, guide rods are fixedly connected inside the connection frame on both sides of the screw rod. The bearing platform is sleeved on the surface of the guide rods and is slidably connected to the guide rods.

[0013] Preferably, a connection block is fixedly connected to the surface of the bearing platform. The bracket is located outside the connection block. A shaft rod is fixedly connected inside the bracket. Both ends of the shaft rod penetrate through the connection block and are movably connected to the connection block.

[0014] Preferably, trapezoidal blocks are fixedly connected to the surface of the machine body on both sides of the connection frame. Support plates are fixedly connected to both ends of the shaft rod. One side of the support plate away from the shaft rod contacts the surface of the trapezoidal block.

[0015] Preferably, a roller is movably connected to one side of the support plate away from the shaft rod through a pin shaft. The outer surface of the roller contacts the surface of the trapezoidal block.

[0016] Preferably, a transmission motor is fixedly connected to the bottom of the connection frame. The output end of the transmission motor penetrates into the connection frame and is fixedly connected to the bottom end of the screw rod.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. The present invention drives the bearing platform to rise through the transmission structure. During the movement of the bearing platform, the inclined lifting frame is driven to move synchronously by the bracket. When the bracket extends from the bearing platform to the bottom of the workpiece and contacts the bottom of the workpiece through the lifting frame, the support and positioning of the workpiece are completed, preventing the phenomenon of axial center offset of the workpiece.

[0019] 2. By providing a screw rod and a connecting frame, the utility model can stably lift the bearing platform and automatically position the adjusted bearing platform at the same time.

[0020] 3. By providing a guide rod, the utility model can limit the bearing platform to prevent the bearing platform from tilting during movement.

[0021] 4. By providing a connecting block and a shaft rod, the utility model can adjust the inclination of the bracket to prevent the horizontally placed bracket from affecting the processing of workpieces.

[0022] 5. By providing a trapezoidal block and a support plate, the utility model can automatically push the bracket to swing during the lifting process of the bearing platform, saving the operation steps of additionally arranging driving equipment.

[0023] 6. By providing rollers, the utility model can protect the support rod and reduce the wear of the support rod and the trapezoidal block during contact friction.

[0024] 7. By providing a transmission motor, the utility model can automatically drive the screw rod to rotate, improving the closed-loop effect of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of the utility model;

[0026] Figure 2 is a schematic top view structural diagram of the utility model;

[0027] Figure 3 is a schematic partial structural diagram of the utility model;

[0028] Figure 4 is a schematic bottom view of a partial structure of the utility model.

[0029] In the figure: 1, machine body; 2, chuck; 3, workpiece; 4, support structure; 5, bearing platform; 6, bracket; 7, lifting frame; 8, transmission structure; 9, connecting frame; 10, screw rod; 11, guide rod; 12, connecting block; 13, shaft rod; 14, trapezoidal block; 15, support plate; 16, roller; 17, transmission motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0031] AsFigures 1 to 4 As shown in the figure, a high-precision numerical control machine tool provided by the present utility model includes a machine body 1;

[0032] A chuck 2 drivingly connected to the surface of the machine body 1;

[0033] A workpiece 3 fixedly connected inside the chuck 2;

[0034] A support structure 4 is provided on the surface of the machine body 1 at the bottom of the chuck 2. The support structure 4 includes a bearing platform 5 provided at the bottom of the chuck 2. A bracket 6 is provided on the surface of the bearing platform 5. One side of the bracket 6 away from the bearing platform 5 extends to the bottom of the workpiece 3. A lifting frame 7 is fixedly connected to one side of the bracket 6 away from the bearing platform 5. The top of the lifting frame 7 contacts the bottom of the workpiece 3. A transmission structure 8 is provided on the right side of the machine body 1. The transmission structure 8 can drive the bearing platform 5 to lift.

[0035] Refer to Figure 3 , the transmission structure 8 includes a connection frame 9 fixedly connected to the surface of the machine body 1. A screw rod 10 is movably connected inside the connection frame 9 through a bearing. The bearing platform 5 is sleeved on the surface of the screw rod 10 and is threadedly connected to the screw rod 10.

[0036] As a technical optimization scheme of the present utility model, by providing the screw rod 10 and the connection frame 9, the bearing platform 5 can be stably lifted, and at the same time, an automatic positioning effect can be achieved for the adjusted bearing platform 5.

[0037] Refer to Figure 3 , guide rods 11 are fixedly connected inside the connection frame 9 on both sides of the screw rod 10. The bearing platform 5 is sleeved on the surface of the guide rods 11 and is slidably connected to the guide rods 11.

[0038] As a technical optimization scheme of the present utility model, by providing the guide rods 11, the bearing platform 5 can be limited, and the phenomenon that the bearing platform 5 tilts during the movement can be avoided.

[0039] Refer to Figure 4 , a connection block 12 is fixedly connected to the surface of the bearing platform 5. The bracket 6 is located outside the connection block 12. A shaft rod 13 is fixedly connected inside the bracket 6. Both ends of the shaft rod 13 penetrate through the connection block 12 and are movably connected to the connection block 12.

[0040] As a technical optimization scheme of the present utility model, by providing the connection block 12 and the shaft rod 13, the inclination of the bracket 6 can be adjusted, and the influence of the horizontally placed bracket 6 on the machining of the workpiece 3 can be avoided.

[0041] Refer to Figure 4, trapezoidal blocks 14 are fixedly connected to the surface of the machine body 1 on both sides of the connection frame 9. Support plates 15 are fixedly connected to both ends of the shaft rod 13, and the side of the support plate 15 away from the shaft rod 13 is in contact with the surface of the trapezoidal block 14.

[0042] As a technical optimization solution of the present utility model, by setting the trapezoidal block 14 and the support plate 15, the bracket 6 can be automatically pushed to swing during the lifting process of the bearing platform 5, saving the operation steps of additionally setting driving equipment.

[0043] Reference Figure 4 , a roller 16 is movably connected to the side of the support plate 15 away from the shaft rod 13 through a pin shaft, and the outer surface of the roller 16 is in contact with the surface of the trapezoidal block 14.

[0044] As a technical optimization solution of the present utility model, by setting the roller 16, the support rod can be protected, reducing the wear of the support rod and the trapezoidal block 14 during contact friction.

[0045] Reference Figure 4 , a transmission motor 17 is fixedly connected to the bottom of the connection frame 9, and the output end of the transmission motor 17 penetrates into the interior of the connection frame 9 and is fixedly connected to the bottom end of the screw rod 10.

[0046] As a technical optimization solution of the present utility model, by setting the transmission motor 17, the screw rod 10 can be automatically driven to rotate, which can improve the closed-loop effect of the structure.

[0047] The working principle and usage process of the present utility model: When in use, first turn on the transmission motor 17, the transmission motor 17 drives the screw rod 10 to rotate, the screw rod 10 uses the thread to push the bearing platform 5 to rise, and during the movement of the bearing platform 5, the inclined lifting frame 7 is driven to move synchronously by the bracket 6. When the support rods on both sides of the bearing platform 5 are in contact with the trapezoidal block 14, the trapezoidal block 14 uses the inclined surface on its surface to squeeze the support rods, so that the support rods drive the bracket 6 to swing by means of the shaft rod 13. When the bracket 6 extends from the bearing platform 5 to the bottom of the workpiece 3 and contacts the bottom of the workpiece 3 through the lifting frame 7, the support and positioning of the workpiece 3 are completed. Then the user fixes the workpiece 3 with the chuck 2 and reversely starts the transmission motor 17 to drive the above structure to reset, avoiding the influence of the support structure 4 and the transmission structure 8 on the machining of the workpiece 3.

[0048] To sum up: For this high-precision CNC machining machine tool, the transmission structure 8 is used to push the bearing platform 5 to rise. During the movement of the bearing platform 5, the inclined lifting frame 7 is driven to move synchronously by the bracket 6. When the bracket 6 extends from the bearing platform 5 to the bottom of the workpiece 3 and contacts the bottom of the workpiece 3 through the lifting frame 7, the support and positioning of the workpiece 3 are completed, preventing the phenomenon of axial offset of the workpiece 3.

[0049] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0050] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision CNC machining machine tool, comprising a machine body (1); A chuck (2) drivingly connected to the surface of the machine body (1); A workpiece (3) fixedly connected to the inside of the chuck (2); Features: The surface of the machine body (1) is provided with a support structure (4) located at the bottom of the chuck (2), the support structure (4) includes a bearing platform (5) arranged at the bottom of the chuck (2), the surface of the bearing platform (5) is provided with a bracket (6), the side of the bracket (6) away from the bearing platform (5) extends to the bottom of the workpiece (3), the side of the bracket (6) away from the bearing platform (5) is fixedly connected with a lifting frame (7), the top of the lifting frame (7) is in contact with the bottom of the workpiece (3), and the right side of the machine body (1) is provided with a transmission structure (8), and the transmission structure (8) can drive the bearing platform (5) to rise and fall.

2. A high-precision CNC machine tool according to claim 1, characterized in that: The transmission structure (8) comprises a connection frame (9) fixedly connected to the surface of the machine body (1), the interior of the connection frame (9) being movably connected to a screw rod (10) via a bearing, and the support platform (5) being sleeved on the surface of the screw rod (10) and being threadedly connected to the screw rod (10).

3. A high-precision CNC machine tool according to claim 2, characterized in that: The connection frame (9) is fixedly connected to guide rods (11) located on both sides of the screw rod (10), and the bearing platform (5) is sleeved on the surface of the guide rod (11) and is slidably connected to the guide rod (11).

4. A high-precision CNC machine tool according to claim 1, characterized in that: A connecting block (12) is fixedly connected to the surface of the supporting platform (5), the bracket (6) is located outside the connecting block (12), and an axle rod (13) is fixedly connected inside the bracket (6), and both ends of the axle rod (13) pass through the connecting block (12) and are movably connected to the connecting block (12).

5. A high-precision CNC machine tool according to claim 4, characterized in that: The surface of the machine body (1) is fixedly connected with trapezoidal blocks (14) located on both sides of the connection frame (9), and both ends of the shaft rod (13) are fixedly connected with support plates (15), and the side of the support plate (15) away from the shaft rod (13) is in contact with the surface of the trapezoidal block (14).

6. A high-precision CNC machining machine tool according to claim 5, characterized in that: A roller (16) is movably connected to the side of the support plate (15) away from the shaft (13) via a pin, and the outer surface of the roller (16) is in contact with the surface of the trapezoidal block (14).

7. A high-precision CNC machining machine tool according to claim 2, characterized in that: A transmission motor (17) is fixedly connected to the bottom of the connection frame (9), and an output end of the transmission motor (17) passes through the interior of the connection frame (9) and is fixedly connected to the bottom end of the screw rod (10).

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