Turret tool changing mechanism and numerical control machining apparatus

Abstract

The utility model relates to the technical field of machining, provide a kind of turret cutter switching mechanism and numerical control processing equipment, the turret cutter switching mechanism includes fixed seat, cutter clamping subassembly and cutter rotary drive subassembly;Cutter clamping subassembly includes the support mechanism of hollow setting and being slidably connected on fixed seat and the rotary tool rest of the end of rotationally connected to support mechanism, rotary tool rest is used to supply cutter body clamping;And, cutter rotary drive subassembly is used to drive rotary tool rest to rotate around shaft, to realize each cutter body in turn rotation.The turret cutter switching mechanism of the application, compact structure, switching speed is fast, positioning accuracy is high, can satisfy modern numerical control processing to the demand of cutter body quick switching.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular provides a turret-type tool switching mechanism and a CNC machining equipment. Background Technology

[0002] A Computer Numerical Control Machine Tool (CNC machine tool) is an automated device that controls the movement and machining process of a machine tool through digital program instructions. It uses a computer system to parse pre-programmed code (such as G-code) to drive the machine tool's servo motors, spindle, tool body, etc., to perform high-precision, high-efficiency cutting, milling, drilling, grinding, and other machining operations.

[0003] Currently, in related products, multi-spindle machine tools (e.g., dual-spindle, quad-spindle, or six-spindle) have significantly improved machining efficiency. However, each tool body needs to correspond to one spindle. When a large number of spindles are used, the overall size also increases. Furthermore, when machining complex parts, it is necessary to frequently change the clamping fixtures, and after changing tools, the assembly accuracy needs to be readjusted, which is more time-consuming. Utility Model Content

[0004] The purpose of this invention is to provide a turret-type tool switching mechanism and CNC machining equipment, aiming to solve the problems of large space and assembly accuracy after tool changing in existing turret-type tool switching mechanisms.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: In a first aspect, embodiments of this application provide a turret-type tool switching mechanism, comprising: A fixed base is provided, on which a spindle is provided for connection to the power unit of the CNC machining equipment; A tool clamping assembly, comprising a hollow support mechanism slidably connected to the fixed base and a rotating tool holder rotatably connected to the end of the support mechanism, the rotating tool holder being used to clamp the tool body; and, A tool rotation drive assembly is used to drive the rotating tool holder to rotate around an axis so that each tool body rotates sequentially.

[0006] The beneficial effects of this application are as follows: The turret-type tool changing mechanism of this application uses a tool rotation drive assembly to provide a driving power source, which drives the rotating tool holder to rotate around an axis, so that each tool body rotates sequentially for repositioning. At the same time, the support mechanism supplements the feed of the tool body in the height direction, thereby realizing the movement of the repositioned tool body in the height direction. The overall volume of the turret-type tool changing mechanism provided in the embodiments of this application can be designed to be smaller, and the accuracy after tool changing is higher.

[0007] In one embodiment, the tool rotation drive assembly includes a drive rotation shaft disposed within the support mechanism and rotatable about an axis relative to the support mechanism, a gear carrier connected to the rotating tool holder, and a gear set for meshing the gear carrier and the drive rotation shaft. The drive rotation shaft drives the gear carrier to rotate about an axis via the gear set, so that the rotating tool holder rotates relative to the fixed base.

[0008] By adopting the above technical solution, various tool bodies are fixed on the rotating tool holder. When it is necessary to switch tool bodies, the support mechanism moves downward in the vertical direction relative to the fixed seat, and simultaneously drives the rotating tool holder to move, so that the rotating tool holder separates from the fixed seat. Furthermore, driven by the drive rotating shaft, the rotational torque is transmitted to the gear carrier through the gear set. The gear carrier rotates around the shaft, and finally realizes the rotation of the rotating tool holder relative to the fixed seat, so as to realize the switching between various tool bodies. Then, the support mechanism moves upward in the vertical direction relative to the fixed seat, and drives the rotating tool holder to move until the rotating tool holder and the fixed seat abut against the limit.

[0009] In some embodiments, a first inclined surface is formed on the fixed base, the rotating tool holder has a second inclined surface adapted to the first inclined surface, and a plurality of mounting surfaces for clamping the tool body, the tool body is vertically clamped on the mounting surfaces, and each of the mounting surfaces is set at an angle to the second inclined surface so that the currently working tool body is in a vertical state.

[0010] In some embodiments, a sealing ring is provided between the fixed base and the rotating tool holder, the sealing ring being used to seal the connection between the first inclined surface and the second inclined surface.

[0011] In some embodiments, the gear carrier includes a rotating head body and a gear ring fixedly connected to the rotating head body, a central gear rotatably connected to the gear carrier, and a plurality of planetary gears meshing with the gear ring and the central gear. The gear set includes a first gear disposed on the central gear and a second gear disposed on the drive rotating shaft and meshing with the first gear.

[0012] In some embodiments, both the first gear and the second gear are helical gears.

[0013] In some embodiments, a receiving groove is recessed on the second inclined surface of the rotating tool holder, and the receiving groove and the first inclined surface enclose an air chamber. A first air passage communicating with the air chamber is provided in the fixed base, and a second air passage communicating with the air chamber is provided in the gear frame.

[0014] In some embodiments, the gear carrier has an exposed end face facing away from the rotating tool holder, and the air outlet of the second air passage is located on the exposed end face; and / or, The cutter body has a gap at the mounting surface, and the air chamber is connected to the outside through the gap.

[0015] In some embodiments, the fixed base is provided with a water pipe, the gear frame is provided with a water channel communicating with the air chamber, and the water pipe is connected to the inlet of the water channel; The gear carrier has an exposed end face facing away from the rotating tool holder, and the outlet of the water channel is located on the exposed end face.

[0016] In some embodiments, the tool rotation drive assembly includes a drive motor disposed on the fixed base, and the rotating tool holder is provided with a toothed ring structure for meshing with the drive motor.

[0017] In some embodiments, the tool clamping assembly further includes a linear drive assembly, which includes a linear drive cylinder and a connecting rod connected to the linear drive cylinder. The other end of the connecting rod is connected to the support mechanism so that the support mechanism can slide up and down relative to the fixed base.

[0018] Secondly, this application also provides a CNC machining equipment, including the turret-type tool switching mechanism described above.

[0019] Understandably, the beneficial effects of the second aspect should be referred to the beneficial effects of the first aspect, and will not be repeated here. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the turret-type tool switching mechanism provided in Embodiment 1 of this utility model; Figure 2 A cross-sectional view of the turret-type tool switching mechanism provided in Embodiment 1 of this utility model; Figure 3 This is a front view of the turret-type tool switching mechanism provided in Embodiment 1 of this utility model; Figure 4 A schematic diagram of the intermediate state of the turret-type tool changing mechanism provided in Embodiment 1 of this utility model during tool changing; Figure 5 Another cross-sectional view of the turret-type tool switching mechanism provided in Embodiment 1 of this utility model; Figure 6 Another cross-sectional view of the turret-type tool switching mechanism provided in Embodiment 1 of this utility model; Figure 7 This is a schematic diagram of the tool clamping assembly of the turret-type tool switching mechanism provided in Embodiment 1 of this utility model; Figure 8 This is a schematic diagram of the tool rotation drive assembly of the turret-type tool switching mechanism provided in Embodiment 1 of this utility model; Figure 9 A cross-section of the turret-type tool switching mechanism provided in Embodiment 1 of this utility model. Figure 1 ; Figure 10 A cross-section of the turret-type tool switching mechanism provided in Embodiment 1 of this utility model. Figure 2 ; Figure 11 This is an exploded view of the turret-type tool switching mechanism provided in Embodiment 2 of this utility model.

[0022] The following are the labeling elements in the figure: 100. Turret-type tool changing mechanism; 10. Mounting base; 11. Spindle; 12. First inclined plane; 13. First air passage; 14. Water pipes; 20. Tool clamping assembly; 21. Support mechanism; 22. Rotary tool post; 221. Second inclined plane; 222. Receiving groove; 223. Air chamber; 224. Mounting surface; 23. Linear drive assembly; 231. Linear drive cylinder; 232. Connecting rod; 24. Gear ring structure; 30. Tool rotation drive assembly; 31. Drive rotation shaft; 32. Gear carrier; 33. Gear set; 321. Rotary head body; 322. Gear ring; 323. Central gear; 324. Planetary gear; 331. First gear; 332. Second gear; 333. Second air passage; 334. Exposed end face; 335. Water passage; 34. Drive motor; 200. Tool body. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0024] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Please refer to Figures 1 to 8 This application provides a turret-type tool switching mechanism 100, including a fixed base 10, a tool clamping assembly 20, and a tool rotation drive assembly 30.

[0028] The fixed base 10 is provided with a spindle 11, which is used to connect to the power unit of the CNC machining equipment; the tool clamping assembly 20 includes a support mechanism 21 that is slidably connected to the fixed base 10 and is hollow, and a rotating tool holder 22 that is rotatably connected to the end of the support mechanism 21, which is used to clamp the tool body 200; and the tool rotation drive assembly 30 is used to drive the rotating tool holder to rotate around the axis so that each of the tool bodies rotates in sequence.

[0029] Understandably, the fixed base 10 is the basic support part of the entire turret-type tool changing mechanism 100, possessing sufficient rigidity and stability to withstand various forces and vibrations generated during machining. A spindle 11, cylindrical in shape, is mounted on the fixed base 10 and connected to it via precision bearings, allowing for high-speed rotation. The spindle 11 connects to the power unit of the CNC machining setup, which can be a motor or other power source. A transmission mechanism drives the spindle 11 to rotate, thereby machining the workpiece. The support mechanism 21 can slide linearly along guide rails or grooves on the fixed base 10, enabling the tool body 200 to feed or retract. The support mechanism 21 can be made of high-strength alloy steel, possessing good rigidity and wear resistance to ensure maintained accuracy during long-term use. One end of the support mechanism 21 is slidably connected to the fixed base 10, and the other end is rotatably connected to the rotating tool holder 22. The rotating tool holder 22 is disc-shaped or polygonal, with multiple tool body 200 mounting positions evenly distributed around its perimeter. Each mounting position can accommodate different types and specifications of tool bodies 200. The rotating tool holder 22 is connected to the end of the support mechanism 21 via bearings, and can rotate freely around the axis of the support mechanism 21 to achieve switching between different tool bodies 200.

[0030] The tool rotation drive assembly 30 is a power source mechanism for providing the rotating tool holder 22 with power to rotate around an axis. The tool rotation drive assembly 30 can be installed inside the fixed base 10 or outside the fixed base 10.

[0031] The turret-type tool changing mechanism of this application provides a driving power source through the tool rotation drive assembly 30, which drives the rotating tool holder 22 to rotate around an axis, thereby enabling the tool bodies 300 to rotate sequentially for repositioning. Simultaneously, the support mechanism 21 provides supplementary feed to the tool bodies 200 in the height direction, thus enabling the repositioned tool bodies 200 to move in the height direction. The turret-type tool changing mechanism provided in this embodiment can be designed to be smaller in overall size and has higher accuracy after tool changing.

[0032] In some embodiments, the tool rotation drive assembly 20 includes a drive rotation shaft 31 disposed within the support mechanism 21 and rotatable about an axis relative to the support mechanism 21, a gear carrier 32 connected to the rotating tool holder 22, and a gear set 33 for meshing the gear carrier 32 and the drive rotation shaft 31. The drive rotation shaft 31 drives the gear carrier 32 to rotate about an axis through the gear set 33, so that the rotating tool holder 22 rotates relative to the fixed base 10.

[0033] Understandably, the support mechanism 21 is cylindrical with a hollow interior. The drive shaft 31 is located within the hollow portion of the support mechanism 21 and is connected to the inner wall of the support mechanism 21 via bearings, allowing it to rotate freely around its axis within the support mechanism 21. One end of the drive shaft 31 is connected to a drive source, such as a motor or a manual knob, while the other end is connected to a gear carrier 32 via a gear set 33. The gear carrier 32 is fixedly mounted on the rotating tool holder 22 and rotates coaxially with it. The gear set 33 includes meshing gears used to transmit the rotational power of the drive shaft 31 to the gear carrier 32. When the drive shaft 31 rotates, the gear carrier 32 rotates through the transmission of the gear set 33, thereby causing the rotating tool holder 22 to rotate relative to the fixed base 10, thus enabling the switching of the tool body 200.

[0034] In actual operation, when it is necessary to switch the tool body 200, the drive shaft 31 drives the gear carrier 32 to rotate around the shaft via the gear set 33, so that the rotating tool holder 22 rotates relative to the fixed seat 10. After the rotating tool holder 22 rotates to the predetermined position, the required tool body 200 is aligned with the working position, and then the tool body 200 is sent into the working area by the sliding of the support mechanism 21, completing the tool body 200 switching process. This turret-type tool switching mechanism 100 has a compact structure, fast switching speed, and high positioning accuracy, which can meet the needs of modern CNC machining for rapid tool body 200 switching. In addition, in order to avoid unnecessary friction between the rotating tool holder 22 and the fixed seat 10, the support mechanism 21 can be moved relative to the fixed seat 10 during the tool body 200 switching process to create a rotational gap between the rotating tool holder 22 and the fixed seat 10.

[0035] In a preferred embodiment, the sliding direction of the support mechanism 21 is parallel to the axis of the spindle 11. This design ensures that the feed direction of the tool body 200 is consistent with the rotation axis of the spindle 11, which is beneficial for improving machining accuracy and stability. The support mechanism 21 is slidably connected to the fixed seat 10 via a linear guide rail. The linear guide rail has high rigidity and high precision characteristics, ensuring that the support mechanism 21 maintains good straightness and stability during sliding.

[0036] In a preferred embodiment, the turret-type tool switching mechanism 100 further includes a feed drive assembly for driving the support mechanism 21 to slide relative to the fixed base 10. The feed drive assembly includes a feed motor fixed to the fixed base 10 and a lead screw connected to the output shaft of the feed motor, the lead screw engaging with a nut on the support mechanism 21. When the feed motor operates, the rotary motion is converted into linear motion of the support mechanism 21 through the lead screw-nut mechanism, achieving precise feed control of the support mechanism 21. The feed drive assembly is also equipped with a position sensor and a control system, enabling precise control and monitoring of the position of the support mechanism 21.

[0037] In a preferred embodiment, the tool rotation drive assembly 30 further includes a motor for driving the drive rotation shaft 31 to rotate. The motor is fixed to the support mechanism 21, and the output shaft of the motor is connected to the drive rotation shaft 31. This design allows the rotation drive source of the tool body 200 to be directly mounted on the support mechanism 21, resulting in a more compact structure and higher transmission efficiency. The motor can be a servo motor or a stepper motor, with precise speed and angle control capabilities, ensuring that the rotating tool holder 22 can be accurately positioned to the required location.

[0038] In a preferred embodiment, the rotary tool holder 22 has multiple tool body 200 mounting positions, which are evenly distributed along the circumference of the rotary tool holder 22. This even distribution design ensures that the rotary tool holder 22 maintains good balance during rotation, reducing vibration and noise. Each tool body 200 mounting position is equipped with a standardized tool body 200 interface, allowing for quick installation and removal of different types of tool bodies 200, improving the efficiency and flexibility of tool body 200 replacement.

[0039] The working process of the turret-type tool switching mechanism 100 of this application is as follows: Various tool bodies 200 are fixed on the rotating tool holder 22. When it is necessary to switch the tool body 200, the support mechanism 21 moves downward in the vertical direction relative to the fixed seat 10, and simultaneously drives the rotating tool holder 22 to move, so that the rotating tool holder 22 separates from the fixed seat 10. Under the drive of the rotating shaft 31, the rotational torque is transmitted to the gear carrier 32 through the gear set 33. The gear carrier 32 rotates around the axis, and finally realizes the rotation of the rotating tool holder 22 relative to the fixed seat 10 to realize the switching between the various tool bodies 200. Then, the support mechanism 21 moves upward in the vertical direction relative to the fixed seat 10 and drives the rotating tool holder 22 to move until the rotating tool holder 22 abuts against the fixed seat 10 and is limited.

[0040] Please refer to Figures 1 to 8 In some embodiments, a first inclined surface 12 is formed on the fixed base 10, the rotating tool holder 22 has a second inclined surface 221 adapted to the first inclined surface 12, and a plurality of mounting surfaces 224 for clamping the tool body 200. The tool body 200 is vertically clamped on the mounting surfaces 224, and each mounting surface 224 is set at an angle to the second inclined surface 221 so that the currently working tool body 200 is in a vertical state.

[0041] Understandably, the first inclined surface 12 is an inclined planar structure on the fixed base 10, and its inclination angle is determined according to the working requirements. It can usually be set to an angle between 30° and 60°, preferably 45°. The surface of the first inclined surface 12 is smooth and flat to ensure that it can fit tightly with the second inclined surface 221 on the rotating tool holder 22, thereby ensuring the stability and accuracy of the entire structure.

[0042] The second inclined surface 221 has the same inclination angle as the first inclined surface 12, and its surface is equally smooth and flat, allowing the rotating tool holder 22 to precisely mate with the fixed base 10. When the rotating tool holder 22 is installed on the fixed base 10, the second inclined surface 221 is in close contact with the first inclined surface 12, forming a stable inclined surface mating structure. This inclined surface mating design not only increases the contact area and improves the stability of the structure, but also facilitates the positioning and installation of the rotating tool holder 22 on the fixed base 10.

[0043] Mounting surfaces 224 are distributed around the rotating tool holder 22, forming a polyhedral structure. Each mounting surface 224 is a flat surface used for mounting and fixing the tool body 200. The mounting surfaces 224 are equipped with clamping mechanisms for fixing the tool body 200, such as bolt holes, slots, or other fixing devices, ensuring that the tool body 200 can be securely mounted on the mounting surface 224. Vertical clamping of the tool body 200 on the mounting surface 224 means that the spindle 11 line of the tool body 200 is perpendicular to the mounting surface 224, and the tool body 200 is securely connected to the mounting surface 224 by bolts or other fixing methods. This vertical clamping method ensures the stability and accuracy of the tool body 200 during operation, reducing vibration and offset. Because the second inclined surface 221 is inclined, each mounting surface 224 needs to form a specific angle with the second inclined surface 221 to keep the tool body 200 vertical during operation. The size of this included angle depends on the tilt angle of the second inclined plane 221. Through precise calculation and design, it is ensured that the currently working tool body 200 can remain vertical no matter which position the rotating tool holder 22 is rotated to.

[0044] When the rotating tool holder 22 rotates on the fixed base 10, different mounting surfaces 224 will sequentially rotate to the working position. Due to the angle design between each mounting surface 224 and the second inclined surface 221, each time a new mounting surface 224 rotates to the working position, the tool body 200 on that mounting surface 224 will automatically be in a vertical position, requiring no additional adjustment. This design greatly improves work efficiency and reduces the adjustment time when changing the tool body 200. During operation, the rotating tool holder 22 can rotate around the axis on the fixed base 10, sequentially rotating different tool bodies 200 to the working position. When it is necessary to change the tool body 200, simply rotate the tool holder 22 to rotate the tool body 200 on the next mounting surface 224 to the working position. Due to the angle design between each mounting surface 224 and the second inclined surface 221, each tool body 200 that rotates to the working position will automatically be in a vertical position, facilitating machining operations.

[0045] Thus, by using inclined planes and a specific angle design, the vertical position of the tool body 200 is ensured during operation, improving machining accuracy and efficiency.

[0046] Please refer to Figures 1 to 8 In some embodiments, a sealing ring (not shown) is provided between the fixed base 10 and the rotating tool holder 22. The sealing ring is used to seal the connection between the first inclined surface 12 and the second inclined surface 221.

[0047] Understandably, the sealing ring serves to enhance the tightness of the contact between the fixed seat 10 and the rotating tool holder 22. The sealing ring should be elastic, possess good sealing performance, and be wear-resistant. When the sealing ring is installed in place, it deforms under pressure, filling the minute gap between the first inclined surface 12 of the fixed seat 10 and the second inclined surface 221 of the rotating tool holder 22, thereby forming a completely sealed connection. This design effectively prevents cutting fluid, dust, and debris from entering the equipment during machining, protecting internal parts from contamination and damage.

[0048] The sealing ring can be made of a special rubber that is resistant to high temperatures and corrosion. This material can maintain its elasticity and sealing performance even under the frictional heat generated by high-speed rotation. The sealing ring has a trapezoidal cross-section, which can produce a better sealing effect under pressure while reducing rotational friction resistance.

[0049] In this way, the application of sealing rings effectively solves the problems of poor sealing, easy wear, and difficult maintenance in traditional connection methods, improves the working efficiency and service life of equipment, and reduces maintenance costs and downtime.

[0050] Please refer to Figures 1 to 8 In some embodiments, the tool clamping assembly 20 further includes a linear drive assembly 23, which includes a linear drive cylinder 231 and a connecting rod 232 connected to the linear drive cylinder 231. The other end of the connecting rod 232 is connected to the support mechanism 21 so that the support mechanism 21 slides up and down relative to the fixed seat 10.

[0051] Understandably, the linear drive assembly 23 in the tool clamping assembly 20 is a key component for realizing the vertical movement of the support mechanism 21. The linear drive assembly 23 mainly consists of two parts: a linear drive cylinder 231 and a connecting rod 232. The linear drive cylinder 231 is fixedly installed in the bottom area of ​​the fixed base 10, with the piston rod facing upwards. The linear drive cylinder 231 adopts a double-acting cylinder structure, with an air inlet and an air outlet. When compressed air enters the lower chamber of the cylinder from the air inlet, the piston rod extends upwards; when compressed air enters the upper chamber of the cylinder from the air outlet, the piston rod retracts downwards.

[0052] The connecting rod 232 is a rigid rod, with one end hinged to the piston rod end of the linear drive cylinder 231, and the other end connected to the bottom of the support mechanism 21 via a hinge structure. The connecting rod 232 can be made of high-strength alloy steel with a rust-proof surface treatment to ensure good mechanical properties during long-term use. Both ends of the connecting rod 232 have connecting holes, which connect to the cylinder piston rod and the support mechanism 21 via pins, forming a reliable transmission mechanism.

[0053] During operation, after receiving a signal from the control system, the piston rod inside the linear drive cylinder 231 begins to move. When the piston rod extends upward, it transmits the upward thrust to the support mechanism 21 via the connecting rod 232, causing the support mechanism 21 to slide upward along the guide rail on the fixed seat 10. When the piston rod retracts downward, the connecting rod 232 pulls the support mechanism 21 downward. This transmission method precisely transmits the linear motion of the cylinder to the support mechanism 21, ensuring that the movement of the support mechanism 21 is smooth and controllable.

[0054] Thus, the linear drive assembly 23 enables the support mechanism 21 to slide stably and precisely up and down on the fixed base 10, providing reliable power support for the normal operation of the tool clamping assembly 20. By adjusting the stroke and thrust parameters of the cylinder, it can adapt to the clamping requirements of tool bodies 200 of different specifications, enhancing the applicability and flexibility of the device.

[0055] Please refer to Figures 1 to 8 In some embodiments, the gear carrier 32 includes a rotating head body 321, a gear ring 322 fixedly connected to the rotating head body 321, a central gear 323 rotatably connected to the gear carrier 32, and a plurality of planetary gears 324 meshing with the gear ring 322 and the central gear 323. The gear set 33 includes a first gear 331 disposed on the central gear 323, and a second gear 332 disposed on the drive rotating shaft 31 and meshing with the first gear 331.

[0056] Understandably, the main body 321 of the rotor is a hollow shell structure with sufficient internal space to accommodate the gear transmission mechanism. The main body 321 can be made of a high-strength alloy material to ensure that the entire gear carrier 32 has sufficient rigidity and strength to withstand the various forces and torques generated during gear transmission. The outer wall of the main body 321 is designed with a heat dissipation structure to facilitate the timely dissipation of heat generated during transmission, preventing overheating of the gear system and subsequent performance degradation.

[0057] The gear ring 322 is fixed to the inner wall of the rotor body 321, forming an integral part with the rotor body 321 by bolt connection or welding. Internal teeth are machined on the inner circumference of the gear ring 322. The module, number of teeth, and tooth profile parameters of these internal teeth are precisely designed to ensure accurate meshing with the planetary gear 324. The gear ring 322 is made of high-hardness alloy steel, and its surface is heat-treated and precision-machined, giving it high hardness and wear resistance, enabling it to withstand long-term meshing friction without easily wearing down.

[0058] A central gear 323 is located at the center of the gear carrier 32, and the central gear 323 is rotatably connected to the gear carrier 32 via bearings. External teeth are machined on the outer circumference of the central gear 323, and these external teeth mesh with the planetary gears 324. The axis of the central gear 323 coincides with the axis of the gear carrier 32, ensuring the coaxiality of the entire transmission system. The central gear 323 is manufactured using high-precision machining technology, resulting in high tooth profile accuracy and high surface hardness, ensuring smooth transmission and long service life.

[0059] Multiple planetary gears 324 are evenly distributed between the inner circumference of the gear ring 322 and the outer circumference of the central gear 323. Each planetary gear 324 meshes with both the internal teeth of the gear ring 322 and the external teeth of the central gear 323, forming a planetary gear mechanism. The planetary gears 324 are supported on the gear carrier 32 via their shafts, allowing them to rotate around their own axes and revolve around the axis of the central gear 323. The number of planetary gears 324 is typically 3-5; their even distribution balances power transmission and reduces vibration and noise. The planetary gears 324 are made of the same material as the central gear 323 and gear ring 322, and undergo heat treatment and precision machining, resulting in good wear resistance and strength.

[0060] The gear set 33 includes a first gear 331 mounted on a central gear 323, and a second gear 332 mounted on a drive shaft 31 and meshing with the first gear 331. The first gear 331 is fixed to the central gear 323, and the two form a single unit that rotates together. The number of teeth, module, and tooth profile parameters of the first gear 331 are carefully designed to ensure good meshing with the second gear 332. The diameter of the first gear 331 is smaller than that of the central gear 323, a design that allows for speed reduction or acceleration transmission.

[0061] The working principle of gear transmission is as follows: When the drive shaft 31 rotates under the drive of the power source, it drives the second gear 332 to rotate. The second gear 332 meshes with the first gear 331, causing the first gear 331 and the central gear 323 to rotate together. The rotation of the central gear 323 drives the planetary gear 324, which meshes with it, to rotate around its own axis. At the same time, the planetary gear 324 meshes with the fixed gear ring 322, causing the planetary gear 324 to revolve around the axis of the central gear 323. Through this planetary gear 324 mechanism, large torque transmission and speed regulation can be achieved.

[0062] Thus, the above structure possesses advantages such as a large transmission ratio, strong load-bearing capacity, high transmission efficiency, and smooth operation. Due to the use of the planetary gear 324 mechanism, the transmission power is distributed across multiple planetary gears 324, reducing the load on individual gears and extending their service life. Simultaneously, by rationally designing the gear ratio of the first gear 331 and the second gear 332, an ideal transmission ratio can be obtained to meet the transmission requirements under different working conditions. Please refer to Figures 1 to 8 In some embodiments, both the first gear 331 and the second gear 332 are helical gears.

[0063] Understandably, the tooth surface of the first gear 331 is inclined at a certain angle to the axis, forming a helical tooth profile. The tooth surface of the second gear 332 is also inclined at the same angle to the axis but in the opposite direction to ensure proper meshing with the first gear 331. This helical tooth design allows the contact area of ​​the gears to gradually increase during meshing, thereby achieving smooth force transmission.

[0064] The tooth surface inclination angle of the first gear 331 is between 15 and 30 degrees. This inclination angle design reduces meshing impact and noise during operation. The tooth surface inclination angle of the second gear 332 is the same as that of the first gear 331 but in the opposite direction, ensuring perfect meshing between the two gears.

[0065] Thus, this helical gear structure has the advantages of smooth transmission, low noise, and high load-bearing capacity, making it particularly suitable for mechanical equipment that requires high-precision, low-noise transmission.

[0066] Please refer to Figure 9 and Figure 10 In some embodiments, a receiving groove 222 is recessed on the second inclined surface 221 of the rotating tool holder 22, and the receiving groove 222 and the first inclined surface 12 enclose an air chamber 223. A first air passage 13 communicating with the air chamber 223 is provided in the fixed base 10, and a second air passage 333 communicating with the air chamber 223 is provided in the gear frame 32.

[0067] Understandably, the receiving slot 222 provides more installation space to accommodate more structures. At the same time, when the second inclined surface 221 of the rotating tool holder 22 abuts against the first inclined surface 12 of the fixed base 10, a relatively closed air chamber 223 is formed.

[0068] Specifically, the external air source flows into the air chamber 223 from outside the fixed base 10 through the first air passage 13, and then flows out of the air chamber 223 through the second air passage 333 to the outside.

[0069] Please refer to Figure 9 and Figure 10 In some embodiments, the gear carrier 32 has an exposed end face 334 facing away from the rotating tool holder 22, and the air outlet of the second air passage 333 is located on the exposed end face 334; and / or, A gap is formed at the position of the tool body 200 on the mounting surface 224 (as shown in the figure), and the air chamber 223 is connected to the outside through the gap.

[0070] Understandably, external gas enters the gas chamber 223 through the first air passage 13, and is either discharged to the outside through the air outlet on the exposed end face 334 of the gear carrier 32 via the second air passage 333; or it is discharged to the outside through the gap formed at the position of the tool body 200 on the mounting surface 224. Ultimately, this reduces the amount of debris adhering to the blade of the tool body 200 during machining, thereby affecting the machining accuracy.

[0071] Please refer to Figure 9 and Figure 10 In some embodiments, the fixed base 10 is provided with a water pipe 14, and the gear frame 32 is provided with a water channel 335 that communicates with the air chamber 223. The water pipe 14 is connected to the inlet of the water channel 335. The gear carrier 32 has an exposed end face 334 facing away from the rotating tool holder 22, and the outlet of the water channel 335 is located on the exposed end face 334.

[0072] Understandably, the water pipe 14 can be connected to an external liquid cooling medium, and the liquid cooling medium can flow out from the outlet of the exposed end face 334 of the gear carrier 32 to cool the tool body 200 or the part during the machining process.

[0073] Please refer to Figure 11 In another embodiment, the tool rotation drive assembly 30 includes a drive motor 34 disposed on the fixed base 10, and a toothed ring structure 24 for meshing with the drive motor 34 on the rotating tool holder 22.

[0074] Understandably, in this embodiment, the drive motor 34 is directly engaged with the gear ring structure 24 on the rotating tool holder 22 to achieve the rotation of the rotating tool holder 22 around the axis.

[0075] Secondly, this application also provides a CNC machining equipment, including the aforementioned turret-type tool switching mechanism 100.

[0076] Understandably, CNC machining equipment can refer to CNC machine tools, etc. Its specific working process is as follows: When the turret-type tool changing mechanism 100 of the CNC machining equipment is working, the control system issues instructions according to the machining program, the drive device drives the turret body to rotate, rotating the required tool body 200 to the working position. The positioning mechanism ensures precise positioning of the turret body, and the tool body 200 locking mechanism ensures stable installation of the tool body 200. The tool body 200 status detection device monitors the status of the tool body 200 in real time to ensure machining safety. The cooling system provides cooling and lubrication for the tool body 200, and the dust and chip protection device protects the internal parts of the equipment from contamination. The entire system works collaboratively to achieve rapid and precise tool body 200 switching, improving machining efficiency and accuracy.

[0077] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A turret-type tool switching mechanism, characterized in that, include: A fixed base is provided, on which a spindle is provided for connection to the power unit of the CNC machining equipment; A tool clamping assembly, comprising a hollow support mechanism slidably connected to the fixed base and a rotating tool holder rotatably connected to the end of the support mechanism, the rotating tool holder being used to clamp the tool body; and, A tool rotation drive assembly is used to drive the rotating tool holder to rotate around an axis so that each tool body rotates sequentially.

2. The turret-type tool switching mechanism according to claim 1, characterized in that: The tool rotation drive assembly includes a drive rotation shaft disposed within the support mechanism and rotatable about an axis relative to the support mechanism, a gear carrier connected to the rotating tool holder, and a gear set for meshing the gear carrier and the drive rotation shaft. The drive rotation shaft drives the gear carrier to rotate about an axis via the gear set, so that the rotating tool holder rotates relative to the fixed base.

3. The turret-type tool switching mechanism according to claim 2, characterized in that: The fixed base has a first inclined surface, the rotating tool holder has a second inclined surface adapted to the first inclined surface, and multiple mounting surfaces for clamping the tool body. The tool body is vertically clamped on the mounting surfaces, and each mounting surface is set at an angle to the second inclined surface so that the currently working tool body is in a vertical state.

4. The turret-type tool switching mechanism according to claim 3, characterized in that: A sealing ring is provided between the fixed base and the rotating tool holder, and the sealing ring is used to seal the connection between the first inclined surface and the second inclined surface.

5. The turret-type tool switching mechanism according to claim 2, characterized in that: The gear carrier includes a rotating head body, a gear ring fixedly connected to the rotating head body, a central gear rotatably connected to the gear carrier, and a plurality of planetary gears meshing with the gear ring and the central gear. The gear set includes a first gear disposed on the central gear and a second gear disposed on the drive rotating shaft and meshing with the first gear.

6. The turret-type tool switching mechanism according to claim 3, characterized in that: The second inclined surface of the rotating tool holder is recessed to form a receiving groove, and the receiving groove and the first inclined surface enclose to form an air chamber. The fixed base is provided with a first air passage communicating with the air chamber, and the gear frame is provided with a second air passage communicating with the air chamber.

7. The turret-type tool switching mechanism according to claim 6, characterized in that: The gear carrier has an exposed end face facing away from the rotating tool holder, and the air outlet of the second air passage is located on the exposed end face; and / or, The cutter body has a gap at the mounting surface, and the air chamber is connected to the outside through the gap.

8. The turret-type tool switching mechanism according to claim 6, characterized in that: The fixed base is provided with a water pipe, and the gear frame is provided with a water channel that connects to the air chamber. The water pipe is connected to the inlet of the water channel. The gear carrier has an exposed end face facing away from the rotating tool holder, and the outlet of the water channel is located on the exposed end face.

9. The turret-type tool switching mechanism according to claim 1, characterized in that: The tool rotation drive assembly includes a drive motor mounted on the fixed base, and a toothed ring structure for meshing with the drive motor on the rotating tool holder.

10. The turret-type tool switching mechanism according to any one of claims 1 to 9, characterized in that: The tool clamping assembly further includes a linear drive assembly, which includes a linear drive cylinder and a connecting rod connected to the linear drive cylinder. The other end of the connecting rod is connected to the support mechanism so that the support mechanism can slide up and down relative to the fixed base.

11. A CNC machining equipment, characterized in that: Includes the turret-type tool switching mechanism as described in any one of claims 1 to 10.

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