A double-swing angle milling head with fixed and stable angle

Abstract

This utility model relates to the field of double-swivel milling head technology and discloses a double-swivel milling head with a fixed and stable angle. It includes a U-shaped frame, with an A-axis rotatably connected between the inner walls of the two sides of the U-shaped frame. An electric spindle is provided at one end of the A-axis. Both sides of the U-shaped frame are provided with drive components that drive the A-axis to rotate. One of the drive components is provided with an annular friction plate. A forged cover is fixed to one side of the U-shaped frame by bolts. The contact surface between the forged cover and the U-shaped frame has a mounting groove. Two slides are slidably connected in the mounting groove, and the annular friction plate is located between the two slides. This utility model uses the annular friction plate and multiple components in combination, which makes the structure and operation simple. With the help of the physical action of mechanical clamping, it can effectively avoid the slippage or loosening that may occur in traditional locking structures, and ensure that the A-axis maintains an angle stable when running at high speed or bearing cutting force.

Description

Technical Field

[0001] This utility model relates to the field of double-swivel milling head technology, and more specifically to a double-swivel milling head with a fixed and stable angle. Background Technology

[0002] The double-swivel milling head, also known as the A / C axis CNC universal milling head, is a core functional component of a five-axis CNC machine tool. Its core function is to expand the five-axis linkage capability of the machine tool.

[0003] A search revealed a Chinese patent with publication number CN221389067U, which discloses a direct-drive double-swing angle milling head device. It features a simple structure, low energy loss, and high control precision. However, the A-axis is fixed by an encoder that controls the rotor's rotation position. In actual use, the A-axis fixed by the encoder is not stable and is very prone to shaking, resulting in low machining precision of the milling head. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a double-swing angle milling head with fixed and stable angle to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a double-swing angle milling head with fixed and stable angle, including a U-shaped frame, an A-axis rotatably connected between the inner walls of the two sides of the U-shaped frame, an electric spindle at one end of the A-axis, and drive components for rotating the A-axis on both sides of the U-shaped frame. One of the drive components is provided with an annular friction plate. A forged cover is fixed to one side of the U-shaped frame by bolts. A mounting groove is opened on the contact surface between the forged cover and the U-shaped frame. Two slides are slidably connected in the mounting groove, and the annular friction plate is located between the two slides. A power component for moving one of the slides is provided on the inner wall of one side of the mounting groove. A joint component for moving the two slides towards each other is provided between them.

[0006] As a further embodiment of this utility model, the drive assembly includes an extension shaft fixed to one side of the A-axis, a rotor being interference-fitted onto the outer circumference of the extension shaft, a stator being bonded to the rotating grooves on both sides of the U-shaped frame, and the stator and rotor working together to drive the A-axis to rotate, and the annular friction plate being bonded to one end of the extension shaft.

[0007] As a further embodiment of this utility model, the power component is an electric push rod, which is fixed to one side of the U-shaped frame, and the movable end of the electric push rod is fixed to one of the slides.

[0008] As a further embodiment of this utility model, the combined assembly includes a gear that rotates on one side of the mounting groove, and racks that mesh with the gear are welded to opposite sides of the two carriages, with the two racks being centrally symmetrically distributed about the rotation point of the gear.

[0009] As a further embodiment of this utility model, the center point of the two carriages is provided with a fixing plate fixed on the mounting groove. The fixing plate is connected to the carriage through a spring-loaded component to assist in pushing the carriage to reset.

[0010] As a further embodiment of this utility model, the rebound component is a spring, and the two ends of the spring are respectively fixed to the fixed plate and the slide.

[0011] As a further embodiment of this utility model, the rebound component is an airbag, and the two ends of the airbag are respectively fixed to the fixing plate and the slide.

[0012] As a further embodiment of this utility model, clamps are fixed to the opposite sides of the two carriages by bolts, and contour grooves are provided on the opposite sides of the two clamps.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. This utility model uses an annular friction plate in conjunction with multiple components, making the structure and operation simple. With the help of the physical action of mechanical clamping, it can effectively avoid the slippage or loosening that may occur in traditional locking structures, ensuring that the A-axis maintains angular stability when running at high speed or bearing cutting force.

[0015] 2. This utility model, by incorporating a power component, provides power through an electric push rod and transmits it via a slide, thus possessing the advantages of large output force and smooth operation, and can adapt to adjustment needs under different load conditions.

[0016] 3. By incorporating a joint assembly, this utility model enables related components on two carriages to approach each other synchronously, effectively reducing positional deviations that may occur due to unilateral force or individual adjustment, and improving the coordination and stability of the overall structure during operation. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention.

[0018] Figure 2 For the present utility model Figure 1 Exploded view.

[0019] Figure 3 For the present utility model Figure 2 A magnified view of a portion of the image.

[0020] Figure 4 For the present utility model Figure 3A magnified view of a portion of the image.

[0021] The attached diagram is labeled as follows: 1. U-shaped frame; 2. A-axis; 3. Electric spindle; 4. Forged cover; 5. Extension shaft; 6. Stator; 7. Rotor; 8. Annular friction plate; 9. Mounting groove; 10. Slide; 11. Spring; 12. Fixing plate; 13. Clamp; 14. Electric push rod; 15. Rack; 16. Gear; 17. Contouring groove. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. This utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Reference Figures 1-4 This utility model provides a double-swing angle milling head with fixed and stable angle, including a U-shaped frame 1, an A-axis 2 rotatably connected between the inner walls of the two sides of the U-shaped frame 1, an electric spindle 3 at one end of the A-axis 2, and drive components that drive the A-axis 2 to rotate on both sides of the U-shaped frame 1. One of the drive components is provided with an annular friction plate 8, which is preferably made of a mixture of ceramic fiber (such as silicon carbide) and metal powder. A forged cover 4 is fixed to one side of the U-shaped frame 1 by bolts. The contact surface between the forged cover 4 and the U-shaped frame 1 is provided with a mounting groove 9. Two slides 10 are slidably connected in the mounting groove 9, and the annular friction plate 8 is located between the two slides 10. A power component that drives one of the slides 10 to move is provided on the inner wall of one side of the mounting groove 9. A joint component that makes the two slides 10 move towards each other is provided between the two slides 10.

[0024] When it is necessary to fix the angle of A-axis 2, one of the slides 10 is moved by the power component. Under the action of the combined component, the two slides 10 will run towards each other, thereby clamping the annular friction plate 8 and fixing the angle of A-axis 2. The structure is simple to operate. With the help of the physical action of mechanical clamping, it can effectively avoid the slippage or loosening that may occur in traditional locking structures, and ensure that A-axis 2 maintains angle stability when running at high speed or bearing cutting force.

[0025] In addition, the drive stroke of the power component can be precisely controlled according to the actual fixing requirements, which can provide sufficient locking force without damaging the ring friction plate 8 due to excessive clamping, thus achieving a balance between stability and protection.

[0026] In this utility model, the drive assembly includes an extension shaft 5 fixed on one side of the A-axis 2. The outer circumferential wall of the extension shaft 5 is interference-fitted with a rotor 7. The extension shaft 5 is the rotating shaft of the rotor 7. The stator 6 is bonded to the rotating grooves on both sides of the U-shaped frame 1. The stator 6 and the rotor 7 work together to drive the A-axis 2 to rotate. The annular friction plate 8 is bonded to one end of the extension shaft 5.

[0027] When the stator 6 is powered on and generates a rotating magnetic field, the rotor 7 will rotate synchronously with the magnetic field under the action of electromagnetic induction, and then drive the A-axis 2 through the extension shaft 5 to achieve angle adjustment. This electromagnetic drive method has the characteristics of fast response speed and high transmission accuracy, which can meet the requirements of A-axis 2 for the speed and accuracy of angle adjustment under different working conditions.

[0028] Meanwhile, the interference fit between the extension shaft 5 and the rotor 7 ensures that there is no relative slippage between them, avoiding energy loss and angular deviation during transmission, and providing a reliable power transmission basis for the stable rotation of the A-shaft 2.

[0029] The power component is an electric push rod 14, which is fixed to one side of the U-shaped frame 1, and the movable end of the electric push rod 14 is fixed to one of the slides 10.

[0030] When the electric push rod 14 is activated, it extends, thereby causing the movable end to move the slide 10. The electric push rod 14 provides power and transmits it through the slide 10, which has the advantages of large output force and smooth operation, and can adapt to the adjustment needs under different load conditions.

[0031] The combined component includes a gear 16 that rotates on one side of the mounting slot 9, and racks 15 that mesh with the gear 16 are welded to opposite sides of the two carriages 10, and the two racks 15 are centrally symmetrically distributed with respect to the rotation point of the gear 16.

[0032] When the slide 10 is moved by the electric push rod 14, the slide 10 will drive the rack 15 to move, thereby driving the gear 16 to rotate, which in turn drives the other rack 15 to move, thus achieving the purpose of the two slides 10 moving towards each other.

[0033] This design of moving in opposite directions enables the relevant components on the two carriages 10 to move closer to each other synchronously, effectively reducing the positional deviation that may be caused by unilateral force or individual adjustment, improving the coordination and stability of the overall structure during operation, and also laying a precise positional foundation for the subsequent linkage operation of other components in the mounting slot 9, ensuring the efficiency and reliability of the entire mechanical system during the adjustment process.

[0034] Furthermore, rack 15 and gear 16 are preferably helical gears and helical racks.

[0035] As another embodiment of this utility model, a fixing plate 12 is provided at the center point of the two slides 10 and fixed on the mounting groove 9. The fixing plate 12 is connected to the slide 10 through a spring-loaded component to assist in pushing the slide 10 to reset, so that the slide 10 can be reset under the action of the spring-loaded component. This effectively improves the positional stability of the slide 10 in the non-working state, avoids unexpected displacement of the slide 10 due to external vibration or misoperation, and further ensures the accuracy and service life of the entire mechanical structure in the cyclic working process.

[0036] This method can be used with the combined assembly. If the combined assembly is not used, one of the carriages 10 contacts the annular friction plate 8.

[0037] The rebound component can be a spring 11 or an airbag;

[0038] When the spring-rebound component is spring 11, both ends of spring 11 are fixed to fixed plate 12 and slide 10 respectively;

[0039] Its installation method can be hook connection or bolt fixation to ensure that the spring 11 will not fall off or shift during the force process;

[0040] When the slide 10 moves toward the fixed plate 12 under the drive of the gear 16 and rack 15, the spring 11 is compressed and stores elastic potential energy; when the driving force disappears, the elastic potential energy released by the spring 11 will push the slide 10 in the opposite direction, so that it quickly returns to the initial position. The whole process is responsive and has high reset accuracy.

[0041] In addition, the spring constant of spring 11 needs to be matched with the mass of carriage 10 and the required reset force to avoid incomplete reset due to too small a spring constant, or excessive spring constant to increase the load on the drive components, so as to ensure the reset effect while taking into account the overall energy consumption and smooth operation of the mechanical system.

[0042] When the rebound component is an airbag, both ends of the airbag are fixed to the fixed plate 12 and the slide 10, respectively;

[0043] The fixing method can be a metal pressure ring snap-fit ​​to ensure that there will be no air leakage or loosening at the connection between the airbag and the fixing plate 12 and the slide 10 during the inflation and deflation process;

[0044] When the slide 10 moves toward the fixed plate 12 under the drive of the gear 16 and rack 15, the airbag is compressed and the internal air pressure increases, converting kinetic energy into gas pressure potential energy and storing it. Once the driving force is removed, the high-pressure gas in the airbag will expand rapidly, generating a reverse thrust to push the slide 10 back to the initial position. During this process, the buffering characteristics of the airbag can effectively reduce the impact force on the fixed plate 12 when the slide 10 resets, reducing the wear of mechanical parts.

[0045] Among them, the two slides 10 are fixed with clamps 13 by bolts on opposite sides. The clamps 13 are preferably made of 30%-50% steel / copper fiber, supplemented with fillers such as resin and graphite. The two clamps 13 are provided with contour grooves 17 on opposite sides.

[0046] During the movement of the slide 10, the slide 10 will drive the clamp 13 to move, so that the annular friction plate 8 is located in the contour groove 17, increasing the contact area between the clamp 13 and the annular friction plate 8. The inner wall of the contour groove 17 is closely fitted with the outer arc surface of the annular friction plate 8, forming a multi-point contact clamping structure.

[0047] This design not only increases friction by increasing the contact area and ensures stability during clamping, but also uses the contoured groove 17 to circumferentially limit the annular friction plate 8, preventing it from shifting or rotating under force.

[0048] Meanwhile, as the carriage 10 continues to move, the clamping force of the clamp 13 on the annular friction plate 8 will gradually increase, thereby increasing the static friction between the two, which in turn provides a reliable frictional basis for subsequent mechanical transmission or braking operations, effectively avoiding problems such as power transmission loss or braking failure caused by poor contact.

[0049] It should be noted that the U-shaped frame 1, A-axis 2, electric spindle 3, extension shaft 5, stator 6, rotor 7, annular friction plate 8, spring 11, electric push rod 14, rack 15 and gear 16 in this utility model are all general standard parts or components known to those skilled in the art. Among them, the electric push rod 14 can be used with a magnetic switch, proximity switch or photoelectric switch to achieve precise control of the push rod's extension and retraction displacement. Its structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods, and will not be described in detail here.

[0050] The working principle of this utility model:

[0051] After the angle of A-axis 2 is adjusted, the electric push rod 14 is activated. The electric push rod 14 extends, thereby causing the movable end to move the slide 10. The slide 10 will drive the rack 15 to move, thereby driving the gear 16 to rotate, which in turn drives the other rack 15 to move. This achieves the purpose of the two slides 10 moving towards each other, so that the two clamps 13 clamp the annular friction plate 8, thereby fixing the angle of A-axis 2. The structure is simple to operate. With the physical action of mechanical clamping, it can effectively avoid the slippage or loosening that may occur in traditional locking structures, ensuring that A-axis 2 maintains angle stability when running at high speed or subjected to cutting force.

[0052] Finally, the following points should be noted: 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 connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0053] The electronic components and modules used in this utility model can all be parts that are commonly used in the market and can achieve the specific functions in this case. The specific models and sizes can be selected and adjusted according to actual needs.

[0054] 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.

Claims

1. A double-swing angle milling head with fixed and stable angle, comprising a U-shaped frame (1), characterized in that: An A-axis (2) is rotatably connected between the inner walls of the two sides of the U-shaped frame (1). An electric spindle (3) is provided at one end of the A-axis (2). Both sides of the U-shaped frame (1) are provided with drive components that drive the A-axis (2) to rotate. One of the drive components is provided with an annular friction plate (8). A forged cover (4) is fixedly connected to one side of the U-shaped frame (1). An installation groove (9) is opened on the contact surface between the forged cover (4) and the U-shaped frame (1). Two slides (10) are slidably connected in the installation groove (9), and the annular friction plate (8) is located between the two slides (10). A power component is provided on the inner wall of one side of the installation groove (9) to drive one of the slides (10) to move. A joint component is provided between the two slides (10) to make them move towards each other.

2. The double-swing angle milling head with fixed and stable angle according to claim 1, characterized in that: The drive assembly includes an extension shaft (5) fixed on one side of the A-axis (2), a rotor (7) is interference-fitted to the outer circumference of the extension shaft (5), a stator (6) is bonded to the rotating grooves on both sides of the U-shaped frame (1), and the stator (6) and the rotor (7) work together to drive the A-axis (2) to rotate, and the annular friction plate (8) is bonded to one end of the extension shaft (5).

3. The double-swing angle milling head with fixed and stable angle according to claim 2, characterized in that: The power component is an electric push rod (14), which is fixed to one side of the U-shaped frame (1), and the movable end of the electric push rod (14) is fixed to one of the slides (10).

4. The double-swing angle milling head with fixed and stable angle according to claim 1, characterized in that: The combined assembly includes a gear (16) that rotates on one side of the mounting slot (9), and racks (15) that mesh with the gear (16) are welded to opposite sides of the two carriages (10), and the two racks (15) are centrally symmetrical about the rotation point of the gear (16).

5. A double-swing angle milling head with fixed and stable angle according to claim 1, characterized in that: The center point of the two carriages (10) is provided with a fixing plate (12) fixed on the mounting groove (9). The fixing plate (12) is connected to the carriage (10) through a spring-loaded component to assist in pushing the carriage (10) to reset.

6. A double-swing angle milling head with fixed and stable angle according to claim 5, characterized in that: The rebound component is a spring (11), and the two ends of the spring (11) are fixed to the fixed plate (12) and the slide (10) respectively.

7. A double-swing angle milling head with fixed and stable angle according to claim 5, characterized in that: The rebound component is an airbag, and the two ends of the airbag are fixed to the fixing plate (12) and the slide (10) respectively.

8. A double-swing angle milling head with fixed and stable angle according to claim 1, characterized in that: Each of the two slides (10) is fixedly connected to a clamp (13) on its opposite side, and each of the two clamps (13) has a contour groove (17) on its opposite side.

Images