A multi-station composite CNC machining device for tone pipes

Abstract

The application discloses a kind of multi-station composite CNC processing equipment for sound pipe, including machine tool, the connecting block is equipped on the machine tool, four jaw chuck is equipped on the connecting block;Stepping motor and bearing seat one are equipped on the machine tool, ball screw one is equipped on the bearing seat one, the output end of the stepping motor is connected with ball screw one, screw nut one is equipped on the ball screw one, cutting mechanism and sanding mechanism are equipped on the screw nut one;Baffle is equipped on the machine tool, drill and mill driving mechanism is equipped on the baffle, servo motor is equipped on the drill and mill driving mechanism, milling cutter is equipped on the servo motor.The application utilizes the processing function of cutting, sanding, drilling, milling, and the sound pipe of wind instrument only needs to be clamped on four jaw chuck once, without transferring and repositioning between different machine tools, can continuously complete all processes such as cutting, pipe opening polishing, side wall drilling, milling, shorten processing cycle, reduce workpiece handling and clamping auxiliary time.

Description

Technical Field

[0001] This invention relates to the field of machine tool technology that combines different metal processing techniques in a specific way, and in particular to a multi-station composite CNC machining equipment for sound tubes. Background Technology

[0002] The sound tube of a wind instrument (such as a flute, clarinet, saxophone, etc.) is the core component that determines the instrument's pitch and timbre. The manufacture of a finished sound tube usually involves several distinct processing steps, including cutting the tube to a fixed length, deburring and polishing the end face of the tube, drilling the tone holes in the tube wall, and milling.

[0003] In existing traditional processing techniques, the above-mentioned processes are usually completed separately on different types of machine tools; cutting and grooving are typically done on sawing machines or simple cutting machines; grinding of the pipe ends is often done by the operator holding the workpiece on a grinding wheel or a special grinding machine; drilling and milling of the sound holes are then transferred to drilling machines or ordinary milling machines. This decentralized processing mode results in the sound tubes being repeatedly transferred and re-clamped between cutting machines, grinding machines, drilling machines, and milling machines. Each transfer and re-clamping of the workpiece between multiple machines consumes a significant amount of auxiliary time, making it difficult to achieve continuous automated production. The consistency of batch products cannot be guaranteed, thus affecting production efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-station composite CNC machining equipment for sound tubes, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A multi-station composite CNC machining equipment for sound tubes includes a machine tool, a connecting block on the machine tool, a four-jaw chuck on the connecting block, a stepper motor and a bearing housing on the machine tool, a ball screw on the bearing housing, the output end of the stepper motor connected to the ball screw, a screw nut on the ball screw, a cutting mechanism and a grinding mechanism on the screw nut, a baffle on the machine tool, a drilling and milling drive mechanism on the baffle, a servo motor on the drilling and milling drive mechanism, and a milling cutter on the servo motor.

[0006] Furthermore, the specific principle of clamping and fixing the wind instrument tube blank to be processed on the four-jaw chuck is as follows: the four-jaw chuck clamps the outer wall of the end of the wind instrument tube blank from four radial directions through four independently adjustable jaws. By adjusting the extension length of each jaw synchronously or individually, the workpiece is centered and clamped, ensuring that the axis of the tube blank coincides with the rotation axis of the four-jaw chuck, providing a stable positioning reference for subsequent rotary processing. The cutting mechanism and the grinding mechanism can perform lateral feed while the workpiece rotates, completing the cutting and grinding of the outer wall. The entire cutting mechanism and grinding mechanism are mounted on a linear motion module driven by a stepper motor. The stepper motor drives the ball screw to rotate, which in turn drives the entire connecting seat and the cutting and grinding mechanisms above it to move along the wind instrument tube blank, aligning it with the position on the tube that needs to be processed.

[0007] In a preferred embodiment, the cutting mechanism includes a connecting seat, a support block connected to the connecting seat, a slider at the bottom of the support block, a housing at one end of the support block, and a grinding mechanism at the other end of the support block; a groove is formed on the housing, and a limiting plate is provided between the housing and the groove; an electric cylinder is provided at one end of the housing, and the output end of the electric cylinder drives the limiting plate through a piston rod; a groove and a rotary motor are provided on the limiting plate, and a cutting blade is connected to the output end of the rotary motor, with the cutting blade located in the groove; a slide rail is provided on the machine tool, and a slider slides on the slide rail.

[0008] Furthermore, when cutting is required, electric cylinder one pushes the limiting plate to extend, causing the cutting blade to contact the rotating wind instrument tube blank. Rotary motor two drives the cutting blade to rotate at high speed, cutting or creating shallow grooves in the tube of the wind instrument tube blank. The cutting blade is located within the groove, resulting in a compact structure.

[0009] In a preferred embodiment, the support block is provided with a reserved opening.

[0010] In a preferred embodiment, the grinding mechanism includes a side plate, on which a second electric cylinder and a second bearing seat are provided. A first rotating rod is provided on the second bearing seat, and an upper grinding block is connected to the first rotating rod. A second connecting plate is connected to the first rotating rod, and the upper grinding block is connected to the second connecting plate. The output end of the second electric cylinder is connected to the first connecting plate via a piston rod, and the first rotating rod is connected to the first connecting plate.

[0011] In a preferred embodiment, the side plate is further provided with an electric cylinder three and a bearing seat three. The bearing seat three is provided with a rotating rod two, and a lower grinding block is connected to the rotating rod two. A connecting plate four is connected to the rotating rod two, and a lower grinding block is connected to the connecting plate four. The output end of the electric cylinder three is connected to the connecting plate three through a piston rod, and the rotating rod two is connected to the connecting plate three.

[0012] In a preferred embodiment, both the upper and lower grinding blocks are provided with grinding teeth.

[0013] Furthermore, after cutting, if grinding of the tube opening or outer wall is required, electric cylinders two and three respectively push the upper and lower grinding blocks to close, clamping the outer wall of the rotating wind instrument tube blank. The grinding teeth then grind the cut area to remove burrs. The grinding process involves the simultaneous activation of electric cylinders two and three: electric cylinder two drives connecting plate one via its piston rod, which in turn drives rotating rod one to rotate around bearing seat two, causing the upper grinding block to swing downwards; electric cylinder three drives connecting plate three via its piston rod, which drives rotating rod two to rotate around bearing seat three, causing the lower grinding block to swing upwards. The upper and lower grinding blocks close synchronously, clamping the outer wall of the rotating tube. The grinding teeth on the surface of the grinding blocks grind the cut area, quickly removing burrs and flash from the tube opening, ensuring a smooth and flat tube opening. After grinding, the two electric cylinders respectively drive the upper and lower grinding blocks to reset, releasing the workpiece.

[0014] Specifically, after the cutting is completed, the upper and lower abrasive blocks can automatically close under the drive of an electric cylinder, clamping the outer wall of the still rotating sound tube for synchronous grinding, quickly removing burrs and flash from the tube opening, eliminating the need for subsequent manual deburring process, and realizing continuous processing of "cutting-grinding" integration.

[0015] In a preferred embodiment, one end of the connecting block is provided with a rotary motor, the output end of the rotary motor is connected to a coupling, and one end of the coupling is connected to a four-jaw chuck.

[0016] In a preferred embodiment, the drilling and milling drive mechanism includes a slide rail two and a rack. A slider two slides on the slide rail two, and a fixed plate one is provided on the slider two. A fixed plate two is connected to the fixed plate one, and a rotary motor three is connected to the fixed plate two. A gear is connected to the output end of the rotary motor three, and the gear and rack mesh for transmission. A fixed plate three is connected to the fixed plate one, and a rotary motor four and a bearing seat four are provided on the fixed plate three. A ball screw two is connected to the output end of the rotary motor four, and a screw nut two is provided on the ball screw two. A fixed plate four is provided on the screw nut two. One end of the ball screw two is connected to the bearing seat four. A servo motor is provided on the fixed plate four.

[0017] Furthermore, when horizontal movement is required, the rotary motor three drives the gear to rotate on the rack, causing the fixed plate one to move left and right on the slide rail two via the slider two, so that the milling cutter is aligned with the radial direction of the wind instrument sound tube blank. When vertical feed is required, the rotary motor four drives the ball screw two to rotate, which in turn drives the fixed plate four to move up and down via the screw nut two. During drilling and milling, the servo motor fixed on the fixed plate four starts, driving the milling cutter to rotate. At this time, the four-jaw chuck of the workpiece spindle is in the locked indexing state, the wind instrument sound tube blank does not rotate, and the milling cutter, with the cooperation of horizontal movement and vertical feed, completes the drilling and milling of the sound holes on the side wall of the wind instrument sound tube blank.

[0018] In a preferred embodiment, the baffle is equipped with a cable chain, and a fixing plate is connected to the cable chain. During the movement of the entire drilling and milling drive mechanism and the milling cutter on the baffle, the motor's wires and conduits are entirely enclosed within the cable chain, preventing wear or entanglement of the wiring due to repeated movement.

[0019] In a preferred embodiment, the machine tool is equipped with a power distribution cabinet, and the electrical control of the entire machine is uniformly completed by the power distribution cabinet.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The equipment of this invention integrates the processing functions of cutting, grinding, drilling and milling. The blank of the wind instrument tube only needs to be clamped on the four-jaw chuck once, without the need to transfer and reposition between different machine tools. All processes such as cutting, tube end grinding, side wall drilling and milling can be completed continuously, which greatly shortens the processing cycle and reduces the auxiliary time for workpiece handling and clamping. In addition, since all processing is completed in the same clamping and on the same workpiece spindle, the problem of reduced production efficiency caused by multiple clamping in traditional processing is avoided, thereby improving production efficiency.

[0021] 2. In this invention, the cutting mechanism and the grinding mechanism share the same axial movement module, integrated on the connecting seat, and achieve precise axial positioning by driving the ball screw with a stepper motor; the drilling and milling drive mechanism is located on a baffle on one side of the machine tool, forming an independent radial machining unit. The two sets of mechanisms are arranged in layers around the workpiece spindle, without interfering with each other, making full use of the machine tool space.

[0022] 3. The cutting blade of this invention is embedded in the groove of the limiting plate, which has a compact structure and can suppress the splashing of chips. After cutting, the upper and lower grinding blocks can automatically close under the drive of the electric cylinder, clamp the outer wall of the sound tube which is still rotating, and grind it synchronously to quickly remove the burrs and flash from the tube opening, eliminating the need for subsequent manual deburring process and realizing continuous processing of "cutting-grinding" integration. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings: The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, guided by the teachings of this invention, can select various possible shapes and proportions to implement the invention according to specific circumstances.

[0024] Figure 1 This is a three-dimensional structural diagram of a multi-station composite CNC machining equipment for sound tubes proposed in this invention. Figure 1 ; Figure 2 This is a three-dimensional structural diagram of a multi-station composite CNC machining equipment for sound tubes proposed in this invention. Figure 2 ; Figure 3 This is a schematic diagram of the cutting mechanism structure of a multi-station composite CNC machining equipment for sound tubes proposed in this invention; Figure 4 This invention provides a schematic diagram of a grinding mechanism for a multi-station composite CNC machining equipment for sound tubes. Figure 1 ; Figure 5 This invention provides a schematic diagram of a grinding mechanism for a multi-station composite CNC machining equipment for sound tubes. Figure 2 .

[0025] Figure label: 1. Machine tool; 2. Connecting block; 3. Rotary motor one; 4. Four-jaw chuck; 5. Slide rail one; 6. Stepper motor; 7. Ball screw one; 8. Bearing seat one; 9. Screw nut one; 10. Connecting seat; 11. Support block; 12. Slider one; 13. Housing; 14. Slide groove; 15. Electric cylinder one; 16. Limiting plate; 17. Groove; 18. Rotary motor two; 19. Cutting disc; 20. Reserved opening; 21. Side plate; 22. Electric cylinder two; 23. Connecting plate one; 24. Bearing seat two; 25. Rotating rod one; 26. Upper grinding block; 27. 28. Connecting plate 2; 29. ​​Electric cylinder 3; 30. Connecting plate 3; 31. Bearing seat 3; 32. Rotating rod 2; 33. Lower grinding block; 34. Connecting plate 4; 35. Baffle; 36. Slide rail 2; 37. Fixing plate 1; 38. Slider 2; 39. Fixing plate 2; 40. Rotary motor 3; 41. Gear; 42. Rack; 43. Cable chain; 44. Fixing plate 3; 45. Rotary motor 4; 46. Bearing seat 4; 47. Ball screw 2; 48. Screw nut 2; 49. Fixing plate 4; 50. Servo motor; 51. Milling cutter; 52. Power distribution cabinet. Detailed Implementation

[0026] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0027] In the description of the embodiments of the present invention, it should be noted that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "top," "long," "short," "inner," "outer," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of the present invention and for 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 the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this invention, it should be understood that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component present simultaneously. When a component is considered to be "set" on another component, it can be directly set on the other component or there may be an intermediate component present simultaneously. It should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "installed," and "connected" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0029] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the scope of protection of the present invention.

[0030] See Figure 1-5 This embodiment provides a multi-station composite CNC machining equipment for sound tubes, including a machine tool 1, a connecting block 2 on the machine tool 1, and a four-jaw chuck 4 on the connecting block 2; The machine tool 1 is equipped with a stepper motor 6 and a bearing housing 8. The bearing housing 8 is equipped with a ball screw 7. The output end of the stepper motor 6 is connected to the ball screw 7. The ball screw 7 is equipped with a screw nut 9. The screw nut 9 is equipped with a cutting mechanism and a grinding mechanism. Specifically, the cutting mechanism and the grinding mechanism share the same axial movement module, which is integrated on the connecting seat and achieves precise axial positioning by driving the ball screw through a stepper motor; the drilling and milling drive mechanism is located on the baffle on one side of the machine tool, forming an independent radial machining unit.

[0031] The machine tool 1 is equipped with a baffle 34, a drilling and milling drive mechanism is provided on the baffle 34, a servo motor 49 is provided on the drilling and milling drive mechanism, and a milling cutter 50 is provided on the servo motor 49.

[0032] See Figure 1 and Figure 2 Specifically, the principle of clamping and fixing the wind instrument tube blank to be processed on the four-jaw chuck 4 is as follows: the four-jaw chuck 4 clamps the outer wall of the end of the wind instrument tube blank from four radial directions through four independently adjustable jaws. By adjusting the extension length of each jaw synchronously or individually, the centering and clamping of the workpiece is achieved, ensuring that the axis of the tube blank coincides with the rotation axis of the four-jaw chuck 4, providing a stable positioning reference for subsequent rotation processing.

[0033] It should be noted that the four-jaw chuck 4 is set using conventional technical means in the prior art. Therefore, this embodiment will not describe it in detail, and the accompanying drawings will not be shown in detail.

[0034] See Figure 1 and Figure 2 In this embodiment, the cutting mechanism and the grinding mechanism can perform lateral feed while the workpiece rotates, completing the cutting and grinding of the outer wall. The entire cutting mechanism and grinding mechanism are mounted on a linear motion module driven by a stepper motor. The stepper motor 6 drives the ball screw 7 to rotate, which in turn drives the entire connecting seat 10 and the cutting and grinding mechanisms above it to move along the wind instrument tube blank and align with the position on the tube that needs to be processed.

[0035] The cutting mechanism includes a connecting seat 10, a support block 11 connected to the connecting seat 10, a slider 12 at the bottom of the support block 11, a housing 13 at one end of the support block 11, and a sanding mechanism at the other end of the support block 11. A sliding groove 14 is provided on the housing 13, and a limiting plate 16 is provided between the housing 13 and the sliding groove 14; One end of the housing 13 is provided with an electric cylinder 15, and the output end of the electric cylinder 15 drives the limit plate 16 through the piston rod. The limiting plate 16 is provided with a groove 17 and a rotary motor 18. The output end of the rotary motor 18 is connected to a cutting blade 19, which is located in the groove 17. The machine tool 1 is equipped with a slide rail 5, and a slider 12 slides on the slide rail 5.

[0036] See Figure 3 In this embodiment, when cutting is required, the electric cylinder 15 pushes the limiting plate 16 out, causing the cutting blade 19 to contact the rotating wind instrument tube blank. The rotary motor 18 drives the cutting blade 19 to rotate at high speed, cutting or creating shallow grooves in the tube body of the wind instrument tube blank. The cutting blade is located within the groove 17, resulting in a compact structure.

[0037] The support block 11 has a reserved opening 20.

[0038] The grinding mechanism includes a side plate 21, on which an electric cylinder 22 and a bearing seat 24 are provided. A rotating rod 25 is provided on the bearing seat 24, and an upper grinding block 26 is connected to the rotating rod 25. A connecting plate 27 is connected to the rotating rod 25, and an upper abrasive block 26 is connected to the connecting plate 27; The output end of the electric cylinder 22 is connected to the connecting plate 23 via the piston rod, and the rotating rod 25 is connected to the connecting plate 23.

[0039] The side plate 21 is also equipped with an electric cylinder 28 and a bearing seat 30. The bearing seat 30 is equipped with a rotating rod 31, and a lower grinding block 32 is connected to the rotating rod 31. A connecting plate 4 33 is connected to the rotating rod 2 31, and a lower frosted block 32 is connected to the connecting plate 4 33. The output end of the electric cylinder 28 is connected to the connecting plate 29 via the piston rod, and the rotating rod 31 is connected to the connecting plate 29.

[0040] Both the upper grinding block 26 and the lower grinding block 32 are equipped with grinding teeth.

[0041] Specifically, connecting plate 329, rotating rod 231, and lower frosted block 32 are connected as a single unit; rotating rod 231, connecting plate 43, and lower frosted block 32 are also connected as a single unit.

[0042] Specifically, connecting plate 1 23, rotating rod 1 25, and upper frosted block 26 are connected as a single unit; rotating rod 1 25, connecting plate 27, and upper frosted block 26 are also connected as a single unit.

[0043] See Figure 4 and Figure 5 Specifically, after the cutting is completed, if it is necessary to grind the pipe opening or the outer wall, electric cylinder 22 and electric cylinder 38 respectively push the upper grinding block 26 and the lower grinding block 32 to close together, clamping the outer wall of the rotating wind instrument pipe blank, and grinding the cut part through the grinding teeth to remove burrs.

[0044] Specifically, the grinding process involves the simultaneous activation of electric cylinders 22 and 38: Electric cylinder 22 drives connecting plate 23 via its piston rod, which in turn drives rotating rod 25 to rotate around bearing seat 24, causing the upper grinding block 26 to swing downwards; electric cylinder 38 drives connecting plate 29 via its piston rod, which in turn drives rotating rod 31 to rotate around bearing seat 30, causing the lower grinding block 32 to swing upwards. The upper and lower grinding blocks simultaneously close, clamping the rotating outer wall of the sound tube. The grinding teeth on the surface of the grinding blocks grind the cut area, quickly removing burrs and flash from the tube opening, ensuring a smooth and flat opening. After grinding, the two electric cylinders respectively drive the upper and lower grinding blocks to reset, releasing the workpiece.

[0045] One end of the connecting block 2 is equipped with a rotary motor 3, the output end of the rotary motor 3 is connected to a coupling, and one end of the coupling is connected to a four-jaw chuck 4.

[0046] The drilling and milling drive mechanism includes a slide rail 2 35 and a rack 41. A slider 2 37 slides on the slide rail 2 35. A fixed plate 1 36 is provided on the slider 2 37. A fixed plate 2 38 is connected to the fixed plate 1 36. A rotary motor 39 is connected to the fixed plate 2 38. A gear 40 is connected to the output end of the rotary motor 39. The gear 40 and the rack 41 are meshed and driven. A fixed plate 36 is connected to a fixed plate 43, and a rotary motor 444 and a bearing seat 45 are provided on the fixed plate 343. The output end of the rotary motor 44 is connected to the ball screw 2 46, the ball screw 2 46 is provided with the screw nut 2 47, and the screw nut 2 47 is provided with the fixing plate 48. One end of the ball screw 46 is connected to the bearing housing 45; A servo motor 49 is installed on the fixed plate 48.

[0047] Specifically, the milling cutter 50, positioned on one side of the machine tool baffle 34, is used for drilling and milling flat surfaces. When horizontal movement is required, the rotary motor 39 drives the gear 40 to rotate on the rack 41, causing the fixed plate 36 to move left and right on the slide rail 35 via the slider 37, aligning the milling cutter 50 with the radial direction of the wind instrument tube blank. When vertical feed is required, the rotary motor 44 drives the ball screw 46 to rotate, causing the fixed plate 48 to move up and down via the screw nut 47. During drilling and milling, the servo motor 49, fixed on the fixed plate 48, starts, driving the milling cutter 50 to rotate. At this time, the workpiece spindle four-jaw chuck 4 is in a locked indexing state, the wind instrument tube blank does not rotate, and the milling cutter, in conjunction with horizontal movement and vertical feed, completes the drilling and milling of the sound holes on the side wall of the wind instrument tube blank.

[0048] A drag chain 42 is provided on the baffle 34, and a fixed plate 36 is connected to the drag chain 42. When the entire drilling and milling drive mechanism and the milling cutter 50 on the baffle move, the wires and pipes of the motor are all enclosed in the drag chain 42 to prevent the wires from being worn or tangled due to repeated movement.

[0049] The machine tool 1 is equipped with a power distribution cabinet 51. The electrical control of the entire machine is uniformly completed by the power distribution cabinet 51.

[0050] In this embodiment, all machining operations are uniformly controlled by the CNC numerical control system integrated in the power distribution cabinet 51. This system can complete the start-stop, speed adjustment, motion stroke control, and timing coordination of each motor according to the preset machining program, as well as the clamping, cutting, grinding, drilling and milling processes, to achieve fully automated continuous machining of the sound tube. The CNC system can precisely control the spindle speed and indexing lock of rotary motor 3, the axial feed positioning of stepper motor 6, the cutting feed depth of electric cylinder 15, the grinding opening and closing actions of electric cylinder 22 and electric cylinder 3 28, and the horizontal movement and vertical feed of the milling cutter driven by rotary motor 39 and rotary motor 44, ensuring machining accuracy and product batch consistency.

[0051] It should be noted that the above CNC numerical control methods are all implemented using existing technologies, and will not be described in detail in this embodiment.

[0052] In this embodiment, the specific implementation method includes: clamping and fixing the wind instrument tube blank to be processed on the four-jaw chuck 4 to complete the workpiece positioning. The rotary motor 3 is started, and its output end drives the four-jaw chuck 4 to rotate synchronously through the coupling, thereby driving the tube blank to rotate at a constant speed around its own axis, providing a rotational motion basis for subsequent cutting and grinding processes. The entire cutting mechanism and grinding mechanism are integrated and installed on the same transverse linear motion module, which can move as a whole along the tube axis to align with the processing position. The stepper motor 6 drives the ball screw 7 to rotate, and the ball screw 7 drives the connecting seat 10 to make linear motion through the screw nut 9; the slider 12 below the connecting seat 10 slides along the slide rail 5 on the machine tool 1, providing guidance for the entire movement and ensuring the movement accuracy. Through the control of the stepper motor 6, the cutting blade 19 or the upper grinding block 26 and the lower grinding block 32 can be quickly moved to the part of the tube that needs to be cut, grooved or ground. When the sound tube needs to be cut or shallow grooved, electric cylinder 15 is activated, and its output piston rod pushes the limiting plate 16 forward along the sliding groove 14 on the housing 13, so that the cutting blade 19, installed in the groove 17 of the limiting plate 16, comes close to the rotating sound tube blank. At the same time, rotary motor 18 is activated, driving the cutting blade 19 to rotate at high speed to cut the sound tube body, completing the fixed-length cutting or shallow groove processing at a specified position. The cutting blade 19 is embedded in the groove 17, with a compact structure that prevents cutting debris from flying. After processing is completed, electric cylinder 15 drives the limiting plate 16 and the cutting blade 19 to reset. After the cutting or grooving is completed, there is no need to re-clamp the workpiece, and the process can be directly switched to the grinding process. Electric cylinders 22 and 3 (28) start synchronously: Electric cylinder 22 drives connecting plate 23 to move via piston rod, which in turn drives rotating rod 25 to rotate around bearing seat 24, causing the upper grinding block 26 to swing downward; Electric cylinder 3 (28) drives connecting plate 29 to move via piston rod, which drives rotating rod 31 to rotate around bearing seat 30, causing the lower grinding block 32 to swing upward. The upper and lower grinding blocks close synchronously, clamping the rotating outer wall of the sound tube. The grinding teeth on the surface of the grinding blocks grind the cut area, quickly removing burrs and flash from the tube opening, ensuring a smooth and flat opening. After grinding, the two electric cylinders drive the upper and lower grinding blocks to reset, releasing the workpiece. The milling cutter 50, located on one side of baffle 34, is used to drill and mill the sound holes on the side wall of the sound tube. During this process, the workpiece spindle is in a locked indexing state, and the sound tube blank stops rotating. Rotary motor 39 starts, driving gear 40 to mesh and rotate on rack 41 fixed to baffle 34. This causes fixed plate 36 to move left and right along slide rail 35 via slider 37, aligning milling cutter 50 with the radial machining position of the sound tube blank. Then, rotary motor 44 starts, driving ball screw 46 to rotate. This causes screw nut 47 to move fixed plate 48 vertically, adjusting the feed depth of milling cutter 50. Finally, servo motor 49 starts, driving milling cutter 50 to rotate. With the coordination of horizontal movement and vertical feed, milling cutter 50 completes drilling and planar milling at designated positions on the sidewall of the sound tube.

[0053] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0054] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

Claims

1. A multi-station composite CNC machining equipment for sound tubes, comprising a machine tool (1), characterized in that, The machine tool (1) is provided with a connecting block (2), and the connecting block (2) is provided with a four-jaw chuck (4); The machine tool (1) is equipped with a stepper motor (6) and a bearing seat (8). The bearing seat (8) is equipped with a ball screw (7). The output end of the stepper motor (6) is connected to the ball screw (7). The ball screw (7) is equipped with a screw nut (9). The screw nut (9) is equipped with a cutting mechanism and a grinding mechanism. The machine tool (1) is provided with a baffle (34), the baffle (34) is provided with a drilling and milling drive mechanism, the drilling and milling drive mechanism is provided with a servo motor (49), and the servo motor (49) is provided with a milling cutter (50).

2. The multi-station composite CNC machining equipment for sound tubes according to claim 1, characterized in that, The cutting mechanism includes a connecting seat (10), a support block (11) is connected to the connecting seat (10), a slider (12) is provided at the bottom of the support block (11), a housing (13) is provided at one end of the support block (11), and a sanding mechanism is provided at the other end of the support block (11). A sliding groove (14) is provided on the housing (13), and a limiting plate (16) is provided between the housing (13) and the sliding groove (14). One end of the housing (13) is provided with an electric cylinder (15), and the output end of the electric cylinder (15) drives a limit plate (16) through a piston rod. The limiting plate (16) is provided with a groove (17) and a rotary motor (18). The output end of the rotary motor (18) is connected to a cutting blade (19), which is located in the groove (17). The machine tool (1) is provided with a slide rail (5), and a slider (12) slides on the slide rail (5).

3. A multi-station composite CNC machining equipment for sound tubes according to claim 2, characterized in that, The support block (11) is provided with a reserved opening (20).

4. The multi-station composite CNC machining equipment for sound tubes according to claim 1, characterized in that, The grinding mechanism includes a side plate (21), on which an electric cylinder two (22) and a bearing seat two (24) are provided. A rotating rod one (25) is provided on the bearing seat two (24), and an upper grinding block (26) is connected to the rotating rod one (25). A connecting plate 2 (27) is connected to the rotating rod 1 (25), and an upper abrasive block (26) is connected to the connecting plate 2 (27). The output end of the electric cylinder 2 (22) is connected to the connecting plate 1 (23) via the piston rod, and the connecting plate 1 (23) is connected to the rotating rod 1 (25).

5. A multi-station composite CNC machining equipment for sound tubes according to claim 4, characterized in that, The side plate (21) is also provided with an electric cylinder three (28) and a bearing seat three (30). The bearing seat three (30) is provided with a rotating rod two (31), and a lower grinding block (32) is connected to the rotating rod two (31). The rotating rod 2 (31) is connected to the connecting plate 4 (33), and the connecting plate 4 (33) is connected to the lower abrasive block (32). The output end of the electric cylinder three (28) is connected to the connecting plate three (29) via the piston rod, and the connecting plate three (29) is connected to the rotating rod two (31).

6. A multi-station composite CNC machining equipment for sound tubes according to any one of claims 4 or 5, characterized in that, Both the upper grinding block (26) and the lower grinding block (32) are provided with grinding teeth.

7. A multi-station composite CNC machining equipment for sound tubes according to claim 1, characterized in that, One end of the connecting block (2) is provided with a rotary motor (3), the output end of the rotary motor (3) is connected to a coupling, and one end of the coupling is connected to a four-jaw chuck (4).

8. A multi-station composite CNC machining equipment for sound tubes according to claim 1, characterized in that, The drilling and milling drive mechanism includes a slide rail two (35) and a rack (41). The slide rail two (35) has a slider two (37) sliding on it. The slider two (37) has a fixed plate one (36) on it. The fixed plate one (36) is connected to a fixed plate two (38). The fixed plate two (38) is connected to a rotary motor three (39). The output end of the rotary motor three (39) is connected to a gear (40). The gear (40) and the rack (41) are meshed and driven. The fixing plate 1 (36) is connected to the fixing plate 3 (43), and the fixing plate 3 (43) is provided with the rotary motor 4 (44) and the bearing seat 4 (45). The output end of the rotary motor four (44) is connected to the ball screw two (46), the ball screw two (46) is provided with the screw nut two (47), and the screw nut two (47) is provided with the fixing plate four (48). One end of the ball screw 2 (46) is connected to bearing housing 4 (45). A servo motor (49) is provided on the fixed plate four (48).

9. A multi-station composite CNC machining equipment for sound tubes according to claim 1, characterized in that, The baffle (34) is provided with a drag chain (42), and a fixing plate (36) is connected to the drag chain (42).

10. A multi-station composite CNC machining equipment for sound tubes according to claim 1, characterized in that, The machine tool (1) is equipped with a power distribution cabinet (51).

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