A high-precision CNC machine tool with follow-turning function

Abstract

This application relates to the field of CNC machine tools and discloses a high-precision CNC machine tool with a following turning function. The machine tool includes a CNC machine tool body, a gantry fixed to the top of the machine tool body, an electric cylinder that can move horizontally at will on the gantry, a cutting tool fixed to the telescopic end of the electric cylinder, a rotating seat on the top of the machine tool body, and a rotating assembly for driving the rotating seat to rotate. This application achieves omnidirectional and uniform clamping of the workpiece by using multiple fixed rods circumferentially arranged on the top of the rotating seat and an expansion assembly that drives these fixed rods to synchronously contract or expand. This ensures that the clamping force is in full contact with the workpiece surface, effectively avoiding the problem of uneven clamping force distribution, thereby significantly improving machining accuracy. Simultaneously, the stability of the workpiece during machining is effectively enhanced, and the relative position between the cutting tool and the workpiece remains stable, thereby reducing machining errors and improving the machining quality of the workpiece.

Description

Technical Field

[0001] This application relates to the field of CNC machine tool technology, and in particular to a high-precision CNC machine tool with a follow-turning function. Background Technology

[0002] In high-precision turning, the clamping and fixing of the workpiece is one of the key factors affecting the machining accuracy. Since the relative position between the tool and the workpiece needs to maintain extremely high stability during the machining process, even a slight clamping instability will lead to machining errors, which in turn will affect the machining quality and performance of the workpiece. As the manufacturing industry continues to increase its requirements for product precision and quality, it has also put forward more stringent requirements for the performance of CNC machine tools in terms of workpiece clamping. In existing high-precision CNC machine tools, workpieces are often clamped and fixed by pressure plates. However, the pressure plates can only contact the two sides of the workpiece, which means that they cannot fully contact the workpiece surface during the clamping process. This makes it difficult to achieve a uniform clamping force distribution, which in turn directly affects the machining accuracy and surface quality of the workpiece. To solve the above problems, this application provides a high-precision CNC machine tool with a following turning function.

[0003] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Utility Model Content

[0004] To address the aforementioned issues, this application provides a high-precision CNC machine tool with a follow-turning function.

[0005] The high-precision CNC machine tool with follow-turning function provided in this application adopts the following technical solution: A high-precision CNC machine tool with following turning function includes a CNC machine tool body, a gantry fixed to the top of the CNC machine tool body, an electric cylinder that can move horizontally at will on the gantry, a cutting tool fixed to the telescopic end of the electric cylinder, a rotating seat and a rotating assembly for driving the rotating seat to rotate on the top of the CNC machine tool body, a positioning groove is opened in the rotating seat, and multiple fixed rods and an expansion assembly for driving the multiple fixed rods to retract or expand synchronously are arranged circumferentially on the top of the rotating seat.

[0006] Preferably, the expansion assembly includes a positioning frame, a guide block, a connecting shaft, an external gear ring, a rack, a cylinder, and a connecting plate. The positioning frame rotates on the top of the rotating seat. Multiple guide grooves are circumferentially formed on the surface of the positioning frame. The guide block rotates between the inner walls of the guide grooves and slides on the surface of a fixed rod. One end of the fixed rod passes through the guide block and extends into the positioning frame. The other end of the fixed rod is fixed to the connecting shaft. The other end of the connecting shaft rotates on the top of the rotating seat. The external gear ring is fixed to the positioning frame. The rack slides on the top of the rotating seat and meshes with the external gear ring. The cylinder is fixed to the top of the rotating seat. The connecting plate is simultaneously fixed to one side of the rack and the telescopic end of the cylinder.

[0007] Preferably, the rotating assembly includes a first gear, a second gear, and a motor. The second gear is fixed to the rotating seat, the first gear rotates within the CNC machine tool body, and the first gear meshes with the second gear. The motor is fixed within the CNC machine tool body, and the rotor end of the motor is fixed to the first gear.

[0008] Preferably, the CNC machine tool body has a rotating groove, and the gear rotates in the rotating groove.

[0009] Preferably, the CNC machine tool body has a mounting slot, and the motor is fixed in the mounting slot.

[0010] Preferably, a guide rim is fixed to the top of the outer wall of the positioning frame, and there is a gap between the bottom of the guide rim and the top of the fixing rod.

[0011] In summary, compared with related technologies, this application includes the following beneficial technical effects: By using multiple fixed rods circumferentially arranged on the top of the rotating seat and an expansion assembly that drives these fixed rods to contract or expand synchronously, the workpiece is clamped in an all-round and uniform manner. This ensures that the clamping force is in full contact with the workpiece surface, effectively avoiding the problem of uneven clamping force distribution, thus significantly improving machining accuracy. At the same time, the stability of the workpiece during machining is effectively enhanced, and the relative position between the tool and the workpiece can remain stable, thereby reducing the generation of machining errors and improving the machining quality of the workpiece. Attached Figure Description

[0012] Figure 1 This is a partial side sectional view of an embodiment of the application; Figure 2 This is a schematic diagram of the overall structure of an embodiment of the application; Figure 3 yes Figure 2 Enlarged structural diagram at point A in the middle.

[0013] Explanation of reference numerals in the attached drawings: 1. CNC machine tool body; 2. Gantry frame; 3. Electric cylinder; 4. Cutting tool; 5. Rotary seat; 6. Positioning slot; 7. Positioning frame; 8. Guide slot; 9. Guide block; 10. Fixed rod; 11. Connecting shaft; 12. External gear ring; 13. Rack; 14. Cylinder; 15. Connecting plate; 16. Rotating slot; 17. Gear 1; 18. Gear 2; 19. Mounting slot; 20. Motor; 21. Guide rail. Detailed Implementation

[0014] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0015] This application discloses a high-precision CNC machine tool with a follow-turning function. (Refer to...) Figure 1-3 A high-precision CNC machine tool with following turning function includes a CNC machine tool body 1, a gantry 2 fixed on the top of the CNC machine tool body 1, a lead screw rotatably mounted on the top of the gantry 2, a slider threaded on the surface of the lead screw, a slide groove for the slider to slide on the top of the gantry 2, a servo motor fixed on one side of the gantry 2, the output end of the servo motor fixed to the lead screw, a transverse electric slide rail perpendicular to the length direction of the lead screw fixed on the slider, an electric cylinder 3 slidably mounted on the transverse electric slide rail, the lead screw is driven to rotate by the servo motor, and the slider and the transverse electric slide rail on it move along the Z-axis under the guidance of the slide groove, and the electric cylinder 3 can move along the X-axis under the drive of the transverse electric slide rail, the extension end of the electric cylinder 3 is fixed with a tool 4, and the tool 4 can follow the turning pin function can be realized by the extension and horizontal movement of the electric cylinder 3; It should be noted that the high-precision CNC machine tool body 1 also includes a CNC system, which specifically includes a controller, servo driver, sensors, G-code, CNC software, and HMI. The operator inputs or uploads G-code through the HMI, the CNC software parses the G-code, generates the tool path 4, and calculates the motion parameters of each axis. The controller sends instructions to the servo driver, which drives the servo motor to move the tool 4 and controls the extension and retraction of the electric cylinder 3, so that the tool 4 always keeps in contact with the workpiece surface. The sensors monitor position, force, and other parameters in real time and feed them back to the controller for error correction. The tool 4 accurately cuts the workpiece according to the planned path, realizing the following turning function.

[0016] Reference Figure 1-3The top of the CNC machine tool body 1 is provided with a rotating seat 5 and a rotating assembly for driving the rotating seat 5 to rotate. The rotating assembly includes a first gear 17, a second gear 18, and a motor 20. The second gear 18 is fixed to the rotating seat 5. The first gear 17 rotates inside the CNC machine tool body 1 and meshes with the second gear 18. The motor 20 is fixed inside the CNC machine tool body 1, and the rotor end of the motor 20 is fixed to the first gear 17. Starting the motor 20 causes the first gear 17 to drive the second gear 18 to rotate, thereby causing the rotating seat 5 to rotate. A positioning groove 6 is opened in the rotating seat 5 for placing the workpiece and playing a preliminary positioning role. By rotating the rotating seat 5, the relative position of the workpiece and the tool 4 can be easily adjusted, reducing the processing interruption or adjustment time caused by improper workpiece position, which helps to shorten the processing cycle and improve processing efficiency.

[0017] Reference Figure 1-3 The rotating seat 5 has multiple fixed rods 10 circumferentially arranged on its top and an expansion assembly for driving the multiple fixed rods 10 to contract or expand synchronously. The expansion assembly includes a positioning frame 7, a guide block 9, a connecting shaft 11, an external gear ring 12, a rack 13, a cylinder 14, and a connecting plate 15. The positioning frame 7 rotates on the top of the rotating seat 5. Multiple guide grooves 8 are circumferentially opened on the surface of the positioning frame 7. The guide block 9 rotates between the inner walls of the guide grooves 8 and can slide on the surface of the fixed rods 10. One end of the fixed rod 10 passes through the guide block 9 and extends into the positioning frame 7. The other end of the fixed rod 10 is fixed to the connecting shaft 11. The other end of the connecting shaft 11 rotates on the top of the rotating seat 5. The external gear ring 12 is fixed on the positioning frame 7. The rack 13 slides on the top of the rotating seat 5 and meshes with the external gear ring 12 and the rack 13. The cylinder 14 is fixed on the top of the rotating seat 5. The connecting plate 15 is fixed to one side of the rack 13 and the telescopic end of the cylinder 14. The cylinder 14 is activated to push the connecting plate 15, causing the rack 13 to slide on the top of the rotating seat 5. This causes the outer gear ring 12 to rotate the positioning frame 7 on it. Under the guidance of the guide groove 8 and the guide block 9, and the connection of the connecting shaft 11, the fixing rod 10 slides in the guide block 9, and multiple fixing rods 10 can simultaneously contract or expand, achieving all-round and uniform clamping of the workpiece. This ensures that the clamping force is in full contact with the workpiece surface, effectively avoiding the problem of uneven distribution of clamping force, thus significantly improving the machining accuracy. At the same time, the stability of the workpiece during the machining process is effectively enhanced, so that the relative position between the tool 4 and the workpiece can remain stable, thereby reducing the generation of machining errors and improving the machining quality of the workpiece.

[0018] Reference Figure 1 The CNC machine tool body 1 has a rotating groove 16 inside, and the gear 17 rotates in the rotating groove 16. The rotating groove 16 provides a stable rotation space for the gear 17, which helps to ensure the stability of the gear transmission and thus improve the machining accuracy of the machine tool. At the same time, the rotating groove 16 makes the installation and disassembly of the gear 17 more convenient, reducing the maintenance difficulty and cost.

[0019] Reference Figure 1 The CNC machine tool body 1 has a mounting slot 19, and the motor 20 is fixed in the mounting slot 19. The mounting slot 19 provides a fixed mounting position for the motor 20, ensuring that the motor 20 remains stable during the operation of the machine tool.

[0020] Reference Figure 2 The top of the outer wall of the positioning frame 7 is fixed with a guide eave 21, which is used to guide the debris away from the workpiece, effectively avoiding direct contact between the debris and the workpiece surface, thereby reducing the risk of secondary scratches. There is a gap between the bottom of the guide eave 21 and the top of the fixing rod 10 to avoid motion interference between the guide eave 21 and the fixing rod 10.

[0021] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0022] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-precision numerical control machine tool with a follow-up turning function, comprising a numerical control machine tool body (1), characterized in that: The top of the CNC machine tool body (1) is fixed with a gantry frame (2), and the gantry frame (2) is provided with an electric cylinder (3) that can move horizontally at will. The telescopic end of the electric cylinder (3) is fixed with a cutting tool (4). The top of the CNC machine tool body (1) is provided with a rotating seat (5) and a rotating assembly that drives the rotating seat (5) to rotate. A positioning groove (6) is opened in the rotating seat (5). The top of the rotating seat (5) is provided with multiple fixed rods (10) and an expansion assembly that drives the multiple fixed rods (10) to retract or expand synchronously.

2. The high-precision numerical control machine tool with follow-up turning function according to claim 1, characterized in that: The expansion assembly includes a positioning frame (7), a guide block (9), a connecting shaft (11), an external gear ring (12), a rack (13), a cylinder (14), and a connecting plate (15). The positioning frame (7) rotates on the top of the rotating seat (5). The positioning frame (7) has multiple guide grooves (8) circumferentially formed on its surface. The guide block (9) rotates between the inner walls of the guide grooves (8). The guide block (9) can slide on the surface of the fixed rod (10). One end of the fixed rod (10) passes through the guide block (9) and extends... Extending into the positioning frame (7), the other end of the fixing rod (10) is fixed to the connecting shaft (11), the other end of the connecting shaft (11) rotates on the top of the rotating seat (5), the external gear ring (12) is fixed on the positioning frame (7), the rack (13) slides on the top of the rotating seat (5), the external gear ring (12) meshes with the rack (13), the cylinder (14) is fixed on the top of the rotating seat (5), and the connecting plate (15) is simultaneously fixed to one side of the rack (13) and the telescopic end of the cylinder (14).

3. The high-precision numerical control machine tool with follow-up turning function according to claim 1, characterized in that: The rotating assembly includes gear one (17), gear two (18), and motor (20). Gear two (18) is fixed to the rotating seat (5). Gear one (17) rotates inside the CNC machine tool body (1). Gear one (17) meshes with gear two (18). Motor (20) is fixed inside the CNC machine tool body (1). The rotor end of motor (20) is fixed to gear one (17).

4. The high-precision numerical control machine tool with follow-up turning function according to claim 3, characterized in that: The CNC machine tool body (1) has a rotating groove (16) inside, and the gear (17) rotates in the rotating groove (16).

5. The high-precision numerical control machine tool with follow-up turning function according to claim 3, characterized in that: The CNC machine tool body (1) has an installation slot (19) inside, and the motor (20) is fixed in the installation slot (19).

6. The high-precision numerical control machine tool with follow-up turning function according to claim 2, characterized in that: The top of the outer wall of the positioning frame (7) is fixed with a guide eave (21), and there is a gap between the bottom of the guide eave (21) and the top of the fixing rod (10).

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