Cyclone facing cutter interface

Abstract

The utility model discloses a whirlwind milling cutter interface in the field of whirlwind milling processing of worms, bone nails and threads, which comprises a cutter and an interface, the cutter is used for installing cutters, the cutter is arranged on the interface, and the cutter is assembled with other parts through the interface; wherein the connector is in a triangular pyramid shape with corners, the interior of the connector is hollow, the exterior of the connector is provided with three external contact surfaces, and the contact surfaces are connected through the arc-shaped corners. According to the utility model, through the triangular pyramid-shaped interface, the cutter head has a self-centering characteristic, so that the cutter head can transmit force through surface contact in the rotating process, the force is not concentrated on a fixed bolt any more, the stress surface is increased, axial and radial gaps can be effectively prevented, the running stability of the cutter head is improved, and meanwhile, the machining precision is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of machining equipment, and particularly relates to a cutter head interface for a worm, a bone screw and a thread by using a whirling milling method. Background Art

[0002] In the process of machining of machinery, some components need to be machined, such as cutting, machining threads, etc. Especially when a whirling milling method is used for machining a worm, a bone screw and a thread, a cutter is required, and the cutter needs to be installed on a specific device. Therefore, a matching interface is needed to meet the machining requirements.

[0003] As a component matching with a cutter, the interface of the cutter has been widely used. For example, a tool holder interface conversion device for a power turret disclosed in Patent Application No. 201610685404.8 includes a turret power assembly, a large gear, a power gear, a motor, an internal and external spline sleeve, a spline shaft, a snap ring, a spring, a connecting plate, a telescopic shaft, a hydraulic cylinder and a cutter head. The large gear is movably connected to the turret power assembly, a transition gear is arranged at the upper end of the large gear, the power gear is arranged at the upper end of the transition gear, one end of the power gear is fixedly connected to a motor shaft, the other end of the motor shaft is movably connected to the motor, the internal and external spline sleeve is arranged at the lower end of the large gear, the spline shaft is arranged at the center of the internal and external spline sleeve, the snap ring is arranged on the spline shaft, one end of the internal and external spline sleeve is fixedly connected to the connecting plate, and one end of the connecting plate is movably connected to the telescopic shaft. The right end of the telescopic shaft is movably connected to the hydraulic cylinder. Another example is an interface structure of a face milling cutter disclosed in Patent Application No. 202122217383.6, which includes an interface cylinder and an interface inner hole. Among them, the interface cylinder has a cutter head connection end and a fixed end. The fixed end of the interface cylinder is integrally fixed at one end of the tool shank, and the radius of the interface cylinder gradually decreases from the fixed end to the cutter head connection end; the aperture of the interface inner hole is adapted to the radius change of the interface cylinder for the interface cylinder to be inserted and seamlessly and adaptively connected with the interface cylinder.

[0004] However, the existing interfaces are all cylindrical, resulting in the force being concentrated on the fixing screws on the side of the interface during rotation. Moreover, as the interface wears during use, gaps will occur in the fit, resulting in a certain degree of decline in the machining accuracy and stability, affecting the machining accuracy and stability. Content of the Utility Model

[0005] To solve the above problems, the primary object of the utility model is to provide a whirling milling cutter head interface, and the specific interface structure of the cutter head interface realizes the improvement of machining stability and accuracy.

[0006] Another objective of this invention is to provide a cyclone milling cutter head interface, which has a self-centering feature, enabling the cutter head to transmit force through surface contact during rotation, thereby improving machining accuracy, ensuring high precision and stability in the machining process, and being able to withstand large cutting forces, making it particularly suitable for heavy-duty and intermittent cutting.

[0007] To achieve the above objectives, the technical solution of this utility model is as follows.

[0008] A cyclone milling cutter head interface includes a cutter head and an interface. The cutter head is used to mount cutting tools and is located on one side of the interface. It is assembled with other components through the interface. The interface rotates to drive the cutter head to perform cutting motion.

[0009] The interface has a triangular pyramid shape with corners and is hollow inside, that is, the interface is hollow inside and has three external contact surfaces, which are connected by arc-shaped corners.

[0010] This invention uses a triangular pyramid-shaped interface to enable the cutter head to transmit force through surface contact during rotation. This way, the force is no longer concentrated on the fixing bolts, the force-bearing surface is increased, the stability of the cutter head operation is improved, and the improved stability of the cutter head operation naturally reduces the error, thereby improving the machining accuracy.

[0011] Furthermore, the outer contact surfaces of the triangular pyramid of the interface are equal, so that the torque is evenly distributed on the polygonal surface, further enhancing the stability of the system.

[0012] Furthermore, the angle of inclination of the triangular pyramid of the interface is 1-5°, so that it can be gradually tightened as it rotates during use without the need for a positioning pin limit, and it will not rotate during radial machining.

[0013] Furthermore, the outer diameter of the cutter head is larger than the size of the interface to facilitate the installation of the cutter and to leave space for cutting.

[0014] Furthermore, a side hole is provided on the outer contact surface of the interface, into which a locking bolt can be installed for fixing the interface to other devices. The screw in the side hole is used to eccentrically tighten the cutter head, making it more stable.

[0015] Furthermore, the cone surface and end face of the triangular pyramid are bidirectionally fitted, achieving a bidirectional positioning design, resulting in significant shock absorption and ensuring the smoothness of the workpiece.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. This utility model uses a triangular pyramid-shaped interface with self-centering characteristics, enabling the cutter head to transmit force through surface contact during rotation. This means the force is no longer concentrated on the fixing bolts, increasing the force-bearing surface and effectively preventing axial and radial clearances, thus improving the stability of the cutter head operation. Furthermore, the improved stability of the cutter head operation naturally reduces errors, thereby improving machining accuracy. Actual testing shows a repeatability accuracy of up to ±2μm, ensuring high precision and stability in the machining process.

[0018] 2. This utility model is applicable to larger tapered pin diameters. The triangular pyramid interface has excellent rigidity and can withstand large cutting forces, making it particularly suitable for heavy-duty and intermittent cutting.

[0019] 3. The triangular short cone bidirectional positioning design of this utility model has a significant shock absorption effect, which can ensure the smoothness of the workpiece.

[0020] 4. This utility model eliminates the need for a transmission key, resulting in a uniform distribution of cutting torque, which improves torsional rigidity and avoids positioning errors. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the structure of the cutter head interface implemented by this utility model.

[0023] Figure 2 This is a rear view of the cutter head interface implemented in this utility model.

[0024] Figure 3 This is a schematic diagram of the tool head interface and tool assembly implemented by this utility model.

[0025] Figure 4 This is a schematic diagram illustrating the application of the cutter head interface implemented in this utility model.

[0026] Figure 5 This is an exploded view of the tool turret interface application implemented by this utility model.

[0027] Explanation of reference numerals in the attached diagram: 1. Cutter head; 2. Interface; 3. Cutter; 4. Locking screw; 5. Interface mounting bracket; 6. Bracket; 21. Contact surface; 22. Corner; 23. Side hole. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] For easier understanding, please refer to Figures 1 to 4 This utility model provides a cyclone milling cutter head interface, which is mainly used for cyclone milling of worm gears, bone screws and threads. The cutter head interface typically includes a cutter head 1 and an interface 2. The cutter head 1 is used to mount the cutting tools 3. The cutter head 1 is set on one side of the interface 2 and is assembled with other components through the interface 2. The interface 2 drives the cutter head 1 and the cutting tools 3 mounted on the cutter head 1 to rotate, thereby cutting the workpiece that extends between the cutting tools 3 and completing the cutting work.

[0030] The cutter head 1 is located on one side of the interface 2 so that it can operate under the drive of the interface 2. Normally, the cutter head 1 and the interface 2 can be set as a single unit, but they can also be set separately if needed.

[0031] The number of cutting tools 3 can be set to a certain number. The figure shows 9 cutting tools. In other embodiments, 6 or 12 cutting tools can also be set. In short, the number of cutting tools 3 can be adjusted according to the application conditions.

[0032] Combination Figure 2 As shown, the interface 2 has a triangular pyramid shape with corners and is hollow inside, that is, the interface 2 is hollow inside and has three external contact surfaces 21 on the outside, which are connected by arc-shaped corners 22.

[0033] This specific shape of the interface, with its self-centering feature, allows the cutter head to transmit force through surface contact during rotation. This effectively prevents axial and radial backlash, improving the stability of the cutter head's operation and enhancing machining accuracy. Actual testing shows a repeatability accuracy of up to ±2μm, ensuring high precision and stability during the machining process.

[0034] A preferred application scenario is that the external contact surfaces 21 of the triangular pyramid of interface 2 are all equal. This ensures that the torque is evenly distributed across the polygonal surface during interface rotation, further enhancing system stability. The conical and end faces of the triangular pyramid of interface 2 achieve bidirectional contact with the interface mounting bracket 5. This bidirectional positioning design, with the conical and end faces of the short triangular pyramid in contact, provides significant vibration damping and ensures the smoothness of the workpiece.

[0035] Interface 2 has a certain tilt angle, usually 1-5°. In this case, interface 2 can be gradually tightened as it rotates during use without the need for a positioning pin limit, and it will not rotate during radial machining.

[0036] The outer diameter of the cutter head 1 is larger than the size of the interface 2 to facilitate the installation of the cutter and to leave space for cutting.

[0037] Combination Figure 1 , Figure 3As shown, a side hole 23 is provided on the outer contact surface of the interface 2. A locking screw 4 can be installed in the side hole 23 to fix the interface 2 to other components.

[0038] If necessary, the screws can be tightened from the end face. That is, the side hole of the cutter head is moved to the end face, and the side thread of the interface mounting bracket 5 is also moved to the end face. In this way, the cutter head and the interface mounting bracket 5 can be fixed together by tightening the screws from the end face.

[0039] Typically, the side hole 23 allows the locking screw 4 to enter, and the locking screw 4 in the side hole 23 is used to eccentrically tighten the cutter head 1, making the cutter head 1 more stable.

[0040] In practical applications, refer to Figure 4 , Figure 5 As shown, the cutter head 1 and the interface 2 are an integral structure. The interface 2 is mounted on the interface mounting bracket 5 by screws 4. The interface mounting bracket 5 is mounted on the bracket 6. Driven by the motor, the interface mounting bracket 5 rotates, which drives the interface 2 and the cutter head 1 to rotate, thereby completing the cutting process.

[0041] The work process is as follows:

[0042] Initial state: Interface 2 is fixed together with interface mounting bracket 5 in bracket 6 by locking screws. The cutter head 1 and interface 2 are designed as one piece. Several cutters 3 are installed on the cutter head 1.

[0043] When the workpiece approaches the cutter head 1, the interface mounting bracket 5 drives the interface 2 to rotate, and the interface 2 drives the cutter head 1 and the cutter 3 to rotate synchronously. When the workpiece enters between the cutter 3, the cutter cuts the workpiece that has entered between the cutter 3.

[0044] By continuously pushing the workpiece into the space between the cutters 3 to complete the cutting, when the cutting is completed, the rotation of the interface mounting bracket 5 is stopped. The cutter head 1 and the interface 2 become one, and the interface 2 and the cutter head 1 will also stop rotating.

[0045] In summary, this invention features a self-centering characteristic, enabling the cutter head to transmit force through surface contact during rotation. This eliminates the force concentration on the fixing bolts, increases the force-bearing surface, effectively prevents axial and radial clearances, and improves the stability of the cutter head operation. Furthermore, the improved stability of the cutter head operation naturally reduces errors, thereby improving machining accuracy. Actual testing shows a repeatability accuracy of up to ±2μm, ensuring high precision and stability in the machining process.

[0046] Moreover, this invention is suitable for larger taper diameters, and the triangular pyramid interface has excellent rigidity, which can withstand larger cutting forces, making it particularly suitable for heavy-duty and intermittent cutting.

[0047] This invention eliminates the need for a transmission key, ensures a uniform distribution of cutting torque, improves torsional rigidity, and avoids positioning errors.

[0048] 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 cyclone milling cutter disc interface, characterized in that: It includes a cutter head and an interface. The cutter head is used to mount the cutting tool. The cutter head is located on one side of the interface and is assembled with other components through the interface. The rotation of the interface drives the cutter head to perform cutting motion; wherein: The interface has a triangular pyramid shape with corners, is hollow inside, and has three external contact surfaces connected by arc-shaped corners.

2. The cyclone milling cutter interface according to claim 1, characterized in that: The external contact surfaces of the triangular pyramid of the interface are equal.

3. The cyclone milling cutter interface according to claim 1, characterized in that: The angle of inclination of the triangular pyramid of the interface is 1-5°.

4. The cyclone milling cutter interface according to claim 1, characterized in that: The outer diameter of the cutter head is larger than the size of the interface.

5. The cyclone milling cutter interface according to claim 1, characterized in that: The outer contact surface of the interface is provided with a side hole for installing a locking bolt.

6. The cyclone milling cutter interface according to claim 1, characterized in that: The cone surface and end face of the triangular pyramid are bidirectionally fitted.

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