Servo powered turret for vertical CNC machine tools

Abstract

The invention discloses a servo-powered turret of a vertical composite CNC machine tool, and relates to the technical field of CNC machine tools; in order to solve the problem; specifically includes a fixed disk fixed to the machine tool, a knife seat rotatably connected to the outside of the fixed disk, and a motor fixed to the side wall of the fixed disk by bolts, wherein the outer wall of the knife seat is rotatably connected with a plurality of spindles, and the ends of the spindles are fixed with tools; the output shaft of the motor is connected with a transmission shaft through a coupling, and the outer wall of the transmission shaft is only axially slidably connected with a bevel gear 2, and the outer wall of the spindle is only axially slidably connected with a sleeve. The present invention sets a clutch switching component, which utilizes the "clutch" principle to realize cutting and switching non-simultaneous drive in a single drive state, and at the same time, ingeniously utilizes the magnetic attraction of an electromagnet and a permanent magnet and the circuit connection relationship between the electromagnet and the motor, and combines the different motor powers in the cutting state and the switching state to realize automatic adaptive switching.

Description

Technical Field

[0001] The invention relates to the technical field of numerical control machine tools, in particular to a servo power turret of a vertical compound numerical control machine tool. Background Art

[0002] CNC machine tools are mainly composed of a tool magazine, a turret, a fixture base with multi-axis motion, and a drive part. The turret is used to switch processing tools, and thus, in conjunction with the fixture base, it can achieve multi-functional operation requirements under one clamping.

[0003] In the prior art, such as the Chinese patent publication number CN215315782U, a Y-axis servo-powered turret is disclosed, including a column, a tool disc mechanism and a servo drive mechanism, wherein the servo drive mechanism can drive the tool disc mechanism to rise and fall along the column, and square rails passing through the top and bottom ends of the column are respectively provided on both sides of the column, and the tool disc mechanism includes an integrated workbench and a tool disc, a spindle servo motor and a transfer servo motor arranged on the integrated workbench, and the spindle servo motor and the transfer servo motor are connected to the tool disc, and the integrated workbench adopts a side-mounted type, and guide rail pressure plates that can be embedded in the square rails and slide along the square rails are fixed on both sides of the integrated workbench, and the servo drive mechanism is connected to the integrated workbench and can drive it to rise and fall along the column.

[0004] The above patent has the following shortcomings: the turntable and the spindle drive are controlled by dual motors, which results in two sets of power sources and transmission systems, making the entire turret larger in size and less compact in structure.

[0005] To this end, the present invention proposes a servo-powered turret for a vertical composite CNC machine tool. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a servo-powered turret for a vertical composite CNC machine tool.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] The servo-powered turret of a vertical composite CNC machine tool comprises a fixed plate fixed to the machine tool, a tool holder rotatably connected to the outer side of the fixed plate, and a motor fixed to the end face of the fixed plate by bolts.

[0009] The outer wall of the tool holder is rotatably connected to a plurality of spindles, and the ends of the spindles are fixed with tools;

[0010] The output shaft of the motor is connected to a transmission shaft through a coupling, the outer wall of the transmission shaft is connected to a second bevel gear in an axially slidable manner only, the outer wall of the main shaft is connected to a sleeve in an axially slidable manner only, a first bevel gear that can mesh with the second bevel gear is fixed to the end of the sleeve, and a position switching component for limiting the position of the sleeve is provided on the inner end surface of the fixed plate, and a clutch switching component is provided on the side wall of the second bevel gear;

[0011] The clutch switching assembly includes a pawl 1 fixed to the two end surfaces of the bevel gear and a pawl 2 fixed to the inner side wall of the knife seat, and the pawl 1 and the pawl 2 can engage with each other;

[0012] The clutch switching assembly also includes a permanent magnet fixed to the second bevel gear through a connecting cylinder and an electromagnet fixed to the inner end surface of the fixed disk, and the electromagnet is arranged opposite to the permanent magnet;

[0013] The inner wall of the knife seat is rotatably connected with a transition plate, the end surface of the transition plate is buckled with a spring 1, and the other end of the spring 1 is buckled with the end surface of the bevel gear 2;

[0014] The electromagnet and the motor are connected in series in the same circuit.

[0015] Preferably: the position switching assembly includes a cam groove opened on the end surface of the fixed disk and a rotating ring rotatably connected to the outer wall of the sleeve, the side wall of the rotating ring is rotatably connected to a rotating wheel through a connecting shaft, and the rotating wheel is rollingly connected to the inner wall of the cam groove.

[0016] Furthermore: the cam groove is provided with a concave portion at the processing position.

[0017] On the basis of the above scheme: the inner wall of the tool holder located at the tool is fixedly embedded with a spray pipe facing the tool, and a rotary opening and closing valve is fixed to the other end of the spray pipe. All the rotary opening and closing valves are connected to the same connecting pipe, and a fluid driving mechanism is provided at the inlet of the connecting pipe.

[0018] A better solution in the above-mentioned solution is: the fluid driving mechanism includes a hose fixed to the tool holder through a bracket and a plurality of squeezing rollers rotatably connected to the two outer side walls of the bevel gear, the squeezing rollers contact and squeeze the hose, one end of the hose is connected to the inlet of the connecting pipe, and the other end of the hose is connected to the connecting pipe.

[0019] As a further solution of the present invention: the connecting pipe is fixedly inserted and passes through the end face of the tool holder, the outer wall of the tool holder located at the connecting pipe is fixed with a limiting protrusion, the outer wall of the limiting protrusion is rotatably connected with a transition ring, the end face of the transition ring is provided with a liquid inlet hole, and the liquid inlet hole is connected to the cutting fluid storage tank through a pipeline.

[0020] At the same time, a rack is fixed to the side wall of the sleeve, and teeth engaging with the rack are arranged on the valve stem of the rotary opening and closing valve.

[0021] As a preferred embodiment of the present invention: the fixed disk is radially slidably connected with a block and a magnetic slide rod, and the inner wall of the fixed disk is rotatably connected with a lever, both sides of the lever are provided with strip grooves, and the block and the magnetic slide rod are movably limited and matched in the two strip grooves through limiting columns.

[0022] At the same time, the clamping block and the knife seat are provided with teeth that can bite into each other at the clamping block.

[0023] As a more preferred solution of the present invention: the end of the magnetic sliding rod is connected to the inner wall of the fixed disk through a second spring.

[0024] The beneficial effects of the present invention are:

[0025] 1. The present invention, by setting a clutch switching component, uses the "clutch" principle to realize non-simultaneous driving of cutting and switching in a single driving state. At the same time, it cleverly utilizes the magnetic attraction between the electromagnet and the permanent magnet and the circuit connection relationship between the electromagnet and the motor, combined with the different motor powers in the cutting state and the switching state, to achieve automatic adaptive switching.

[0026] 2. The present invention, by setting the position switching component as a combination of a cam groove and a rotating wheel, can control the meshing state of bevel gear 1 and bevel gear 2 on the one hand, and on the other hand, by controlling the cam groove and the rotating wheel, the bevel gear 1 located at the processing station can be automatically meshed and the bevel gear 1 at the other stations can be automatically disengaged, thereby realizing automatic control of power combination and switching, without the need for a separate power source and logic control.

[0027] 3. The present invention, by providing components such as a liquid spray pipe and a fluid drive mechanism, can spray cutting fluid during processing, thereby highly integrating the cooling mechanism and further increasing the compactness of the structure of the entire CNC machine tool. At the same time, the fluid drive mechanism uses an extrusion roller and a hose to achieve fluid drive, and the extrusion roller is driven by a second bevel gear, so that the supply power of the cutting fluid can be integrated into the motor, further saving the power source layout, while also ensuring the synchronization of the work of each part.

[0028] 4. The present invention, based on the use of a rotary opening and closing valve to control on and off, sets the rotary opening and closing valve to a rotary opening and closing control, and combines the meshing state of bevel gear one and bevel gear two to be controlled by a sleeve, so that when bevel gear one and bevel gear two are meshed, the rotary opening and closing valve automatically opens, thereby realizing the automatic control of multi-channel parallel on and off.

[0029] 5. The present invention, by providing components such as a clamping block and a magnetic slide bar, can ensure reliable engagement of the fixed disk and the tool holder during cutting operations, thereby ensuring the reliability of cutting. On the other hand, the control of engagement and separation is consistent with the state of the motor, thereby simplifying the power arrangement and control logic. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the servo-powered turret of the vertical compound CNC machine tool proposed by the present invention;

[0031] Figure 2 A schematic diagram of the internal structure of the servo-powered turret of the vertical composite CNC machine tool proposed by the present invention;

[0032] Figure 3 It is a schematic cross-sectional structure diagram of the servo-powered turret of the vertical compound CNC machine tool proposed by the present invention;

[0033] Figure 4 This is a schematic diagram of the structure of a position switching component of a servo-powered turret of a vertical composite CNC machine tool proposed by the present invention;

[0034] Figure 5 This is a schematic diagram of the installation position structure of the liquid spray pipe, the rotary opening and closing valve, and the connecting pipe of the servo power turret of the vertical composite CNC machine tool proposed by the present invention;

[0035] Figure 6 A schematic diagram of the rack structure of the servo-powered turret of the vertical composite CNC machine tool proposed by the present invention;

[0036] Figure 7 This is a schematic diagram of the structure of the fluid drive mechanism of the servo-powered turret of the vertical composite CNC machine tool proposed by the present invention;

[0037] Figure 8 This is a schematic diagram of the transition ring and the limiting protrusion structure of the servo power turret of the vertical composite CNC machine tool proposed by the present invention;

[0038] Fig. 9 This is a schematic diagram of the block magnetic suction slide bar and structure of the servo power turret of the vertical compound CNC machine tool proposed by the present invention.

[0039] In the figure: 1. motor; 2. fixed plate; 3. spindle; 4. tool; 5. tool holder; 6. clutch switching assembly; 7. sleeve; 8. position switching assembly; 9. bevel gear 1; 10. bevel gear 2; 11. transmission shaft; 12. electromagnet; 13. connecting cylinder; 14. permanent magnet; 15. pawl 1; 16. pawl 2; 17. transition plate; 18. spring 1; 19. concave part; 20. swivel; 21 , connecting shaft; 22, rotating wheel; 23, cam groove; 24, fluid driving mechanism; 25, spray pipe; 26, rotary opening and closing valve; 27, connecting pipe; 28, rack; 29, extrusion roller; 30, hose; 31, connecting pipe; 32, transition ring; 33, limiting protrusion; 34, liquid inlet hole; 35, block; 36, lever; 37, magnetic sliding rod; 38, spring 2; 39, limiting column; 40, strip groove. DETAILED DESCRIPTION

[0040] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0041] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0042] Example 1: A servo powered turret of a vertical composite CNC machine tool, such as Figure 1-Figure 9 As shown, it includes a fixed plate 2 fixed to the machine tool, a tool holder 5 rotatably connected to the outside of the fixed plate 2, and a motor 1 fixed to the end face of the fixed plate 2 by bolts, the outer wall of the tool holder 5 is rotatably connected to multiple spindles 3, and the end of the spindle 3 is fixed with a tool 4.

[0043] The output shaft of the motor 1 is connected to a transmission shaft 11 through a coupling, and the outer wall of the transmission shaft 11 is connected to a bevel gear 10 in an axially slidable manner only, and the outer wall of the main shaft 3 is connected to a sleeve 7 in an axially slidable manner only, and a bevel gear 9 that can mesh with the bevel gear 10 is fixed to the end of the sleeve 7, and a position switching component 8 for limiting the position of the sleeve 7 is provided on the inner end surface of the fixed plate 2, and a clutch switching component 6 is provided on the side wall of the bevel gear 10.

[0044] The clutch switching assembly 6 includes a pawl 15 fixed to the end surface of the bevel gear 2 10 and a pawl 2 16 fixed to the inner wall of the knife seat 5 , and the pawl 15 and the pawl 2 16 can engage with each other.

[0045] The clutch switching assembly 6 also includes a permanent magnet 14 fixed to the bevel gear 2 10 via a connecting tube 13 and an electromagnet 12 fixed to the inner end surface of the fixed disk 2 , and the electromagnet 12 is arranged opposite to the permanent magnet 14 .

[0046] The inner wall of the knife seat 5 is rotatably connected with a transition plate 17 , the end surface of the transition plate 17 is buckled with a spring 18 , and the other end of the spring 18 is buckled with the end surface of the bevel gear 2 10 .

[0047] Furthermore, the electromagnet 12 and the motor 1 are connected in series in the same circuit.

[0048] Since the cutting power required in the actual cutting state is large, while the power required in the switching state is relatively small, based on this, when the device needs to switch states, the input power of the motor 1 is small, and the internal current is small, so that the field strength of the electromagnet 12 is small, and its magnetic attraction to the permanent magnet 14 is smaller than the pulling force of the spring 18 on the bevel gear 2 10, so that the pawl 15 and the pawl 2 16 are engaged, and at this time the bevel gear 2 10 and the bevel gear 1 9 are offset and not engaged with each other in the vertical plane. When the motor 1 is started, it can drive the transmission shaft 11 to rotate, thereby driving the bevel gear 2 10 to rotate, and then the engagement of the pawl 15 and the pawl 2 16 drives the rotation of the bevel gear 2. The fixed disk 2 rotates to achieve switching. After switching, when in cutting operation, the motor 1 inputs a large power. At this time, the magnetic attraction of the electromagnet 12 to the permanent magnet 14 is greater than the pulling force of the spring 18, and the ratchet 15 is separated from the ratchet 16. At this time, the bevel gear 2 10 and the bevel gear 1 9 are in a meshing vertical plane, and at the same time, the sleeve 7 located in the working state direction will be limited by the sleeve 78 and move to the inner circumference, so that the bevel gear 1 9 is meshed with the bevel gear 2 10. At this time, when the motor 1 is started, the bevel gear 2 10 can be driven to rotate through the transmission shaft 11, thereby driving the sleeve 7 to rotate through the bevel gear 1 9, and then driving the tool 4 to rotate through the spindle 3 to operate.

[0049] This device, by setting up a clutch switching component 6, uses the "clutch" principle to realize non-simultaneous driving of cutting and switching in a single driving state. At the same time, it cleverly uses the magnetic attraction between the electromagnet 12 and the permanent magnet 14 and the circuit connection relationship between the electromagnet 12 and the motor 1, combined with the different powers of the motor 1 in the cutting state and the switching state, to achieve automatic adaptive switching.

[0050] In order to solve the position control problem; Figure 4 As shown, the position switching assembly 8 includes a cam groove 23 opened on the end face of the fixed disk 2 and a rotating ring 20 rotatably connected to the outer wall of the sleeve 7, the side wall of the rotating ring 20 is rotatably connected to a rotating wheel 22 through a connecting shaft 21, the rotating wheel 22 is rollingly connected to the inner wall of the cam groove 23, and the cam groove 23 is provided with a concave portion 19 at the processing position.

[0051] When the sleeve 7 rotates to the processing position, the rotating wheel 22 is limited by the concave portion 19 and moves inward.

[0052] The device, by setting the position switching component 8 as a combination of a cam groove 23 and a rotating wheel 22, can control the meshing state of bevel gear 1 9 and bevel gear 2 10 on the one hand, and on the other hand, by controlling the cam groove 23 and the rotating wheel 22, the bevel gear 1 9 located at the processing station can be automatically meshed and the bevel gear 1 9 at the other stations can be automatically disengaged, thereby realizing automatic control of power combination and switching without the need for a separate power source and logic control.

[0053] In order to solve the problem of cutting fluid supply; Figure 5 As shown, the inner wall of the tool holder 5 located at the tool 4 is fixedly embedded with a spray pipe 25 facing the tool 4, and the other end of the spray pipe 25 is fixed with a rotary opening and closing valve 26. All of the rotary opening and closing valves 26 are connected to the same connecting pipe 27, and a fluid driving mechanism 24 is provided at the inlet of the connecting pipe 27.

[0054] The fluid drive mechanism 24 includes a hose 30 fixed to the tool holder 5 through a bracket and a plurality of squeezing rollers 29 rotatably connected to the outer wall of the bevel gear 2 10. The squeezing rollers 29 contact and squeeze the hose 30. One end of the hose 30 is connected to the inlet of the connecting pipe 27, and the other end of the hose 30 is connected to a connecting pipe 31.

[0055] The connecting tube 31 is fixedly inserted and penetrates the end face of the tool holder 5. The outer wall of the tool holder 5 located at the connecting tube 31 is fixed with a limiting protrusion 33. The outer wall of the limiting protrusion 33 is rotatably connected with a transition ring 32. The end face of the transition ring 32 is provided with a liquid inlet hole 34. The transition ring 32 can be fixed to the fixed plate 2 by a fixing frame, and the liquid inlet hole 34 is connected to the cutting fluid storage tank through a pipeline.

[0056] The rotary on-off valve 26 located at the processing station is in an open state. At this time, when the bevel gear 210 rotates rapidly, the squeezing roller 29 will also rotate relative to the hose 30, thereby squeezing the hose 30, squeezing the cutting fluid in the hose 30 into the connecting pipe 27, and then transporting it to the spray pipe 25 through the rotary on-off valve 26 for spraying. Subsequently, the squeezed hose 30 rebounds to generate negative pressure, and then the negative pressure is transmitted to the inner cavity of the transition ring 32 and the limiting protrusion 33 through the connecting pipe 31, and then the cutting fluid is sucked in through the pipeline for replenishment.

[0057] The device, by providing components such as a liquid spray pipe 25 and a fluid drive mechanism 24, can spray cutting fluid during processing, thereby highly integrating the cooling mechanism and further increasing the compactness of the entire CNC machine tool. At the same time, the fluid drive mechanism 24 uses an extrusion roller 29 and a hose 30 to achieve fluid drive, and the extrusion roller 29 is driven by a bevel gear 10, so that the supply power of the cutting fluid can be integrated into the motor 1, further saving the power source layout, and also ensuring the synchronization of the work of each part.

[0058] In order to further simplify the control problem; Figure 6 As shown, a rack 28 is fixed to the side wall of the sleeve 7, and teeth engaging with the rack 28 are provided on the valve stem of the rotary on-off valve 26.

[0059] When the sleeve 7 moves so that the bevel gear 1 9 at the processing station meshes with the bevel gear 2 10, the rack 28 will also move with the sleeve 7, thereby driving the valve stem of the rotary on-off valve 26 to rotate, so that the rotary on-off valve 26 changes from a closed state to an open state, and the other rotary on-off valves 26 are in a relational state.

[0060] The present device, on the basis of using the rotary on-off valve 26 to control the on-off, sets the rotary on-off valve 26 to be a rotary on-off control, and controls the meshing state of the bevel gear 1 9 and the bevel gear 2 10 by the sleeve 7, so that when the bevel gear 1 9 and the bevel gear 2 10 are meshed, the rotary on-off valve 26 is automatically opened, thereby realizing the automatic control of multi-channel parallel on-off.

[0061] When the present embodiment is in use, when the state needs to be switched, the input power of the motor 1 is small, and the internal current is small, so that the field strength of the electromagnet 12 is small, and the magnetic attraction force of the electromagnet 12 on the permanent magnet 14 is smaller than the pulling force of the spring 18 on the bevel gear 2 10, so that the pawl 15 and the pawl 2 16 are meshed, and at this time the bevel gear 2 10 and the bevel gear 1 9 are dislocated and do not mesh with each other on the vertical plane. When the motor 1 is started, the transmission shaft 11 can be driven to rotate, thereby driving the bevel gear 2 10 to rotate, and then the pawl 15 and the pawl 2 16 are meshed. The engagement of 6 drives the fixed disk 2 to rotate to realize switching. After switching, when in cutting operation, the motor 1 inputs a large power. At this time, the magnetic attraction of the electromagnet 12 to the permanent magnet 14 is greater than the pulling force of the spring 18, and the ratchet 15 is separated from the ratchet 16. At this time, the bevel gear 2 10 and the bevel gear 1 9 are in the meshing vertical plane, and at the same time, the sleeve 7 located in the working state direction will be limited by the sleeve 78 and move to the inner circumference, so that the bevel gear 1 9 is meshed with the bevel gear 2 10. At this time, when the motor 1 is started, it can be The transmission shaft 11 drives the bevel gear 2 10 to rotate, thereby driving the sleeve 7 to rotate through the bevel gear 1 9, and then driving the tool 4 to rotate through the main shaft 3 to perform the operation. When the sleeve 7 rotates to the processing position, the wheel 22 will be limited by the concave part 19 and move inward. When the sleeve 7 moves so that the bevel gear 1 9 located at the processing station is meshed with the bevel gear 2 10, the rack 28 will also move with the sleeve 7, thereby driving the valve stem of the rotary on-off valve 26 to rotate, so that the rotary on-off valve 26 is changed from a closed state to an open state, and the rest of the rotary on-off valves 2 6 is in a relational state, and the rotary on-off valve 26 located at the processing station is in an open state. At this time, when the bevel gear 210 rotates rapidly, the squeezing roller 29 will also rotate relative to the hose 30, thereby squeezing the hose 30, squeezing the cutting fluid in the hose 30 into the connecting pipe 27, and then transporting it to the spray pipe 25 through the rotary on-off valve 26 for spraying. Subsequently, the squeezed hose 30 rebounds to generate negative pressure, and then the negative pressure is transmitted to the inner cavity of the transition ring 32 and the limiting protrusion 33 through the connecting pipe 31, and then the cutting fluid is sucked in through the pipeline for replenishment.

[0062] Example 2: Fig. 9 As shown, in order to solve the locking problem; this embodiment makes the following improvements on the basis of embodiment 1: the fixed disk 2 is radially slidably connected with a block 35 and a magnetic slide rod 37, and the inner wall of the fixed disk 2 is rotatably connected with a lever 36, and both sides of the lever 36 are provided with strip grooves 40, and the block 35 and the magnetic slide rod 37 are movably limited and matched with the two strip grooves 40 through the limit column 39.

[0063] The clamping block 35 and the knife seat 5 are provided with teeth that can engage with each other at the clamping block 35 .

[0064] The end of the magnetic sliding rod 37 is connected to the inner wall of the fixed plate 2 through a second spring 38 .

[0065] When this embodiment is in use, when it is in the cutting operation state, the power of the motor 1 is relatively large, and the field strength of the electromagnet 12 is also relatively large, so that the magnetic attraction slide 37 is adsorbed inward, and then the block 35 is engaged with the inner wall of the tool holder 5 through the lever 36, so that the fixed disk 2 and the tool holder 5 are fixed. When it is in the switching operation, the magnetic attraction force on the magnetic attraction slide 37 is relatively small, and it is moved outward by the elastic force of the spring 2 38, so that the block 35 is separated from the tool holder 5.

[0066] This device, by providing components such as a clamping block 35 and a magnetic slide bar 37, can ensure that the fixed disk 2 and the tool holder 5 are reliably engaged during the cutting operation to ensure the reliability of the cutting. On the other hand, the control of the engagement and separation is consistent with the state of the motor 1, which simplifies the power arrangement and control logic.

[0067] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A servo-powered turret for a vertical composite CNC machine tool, comprising a fixed plate (2) fixed to the machine tool, a tool holder (5) rotatably connected to the outer side of the fixed plate (2), and a motor (1) fixed to the end surface of the fixed plate (2) by bolts, characterized in that: The outer wall of the tool holder (5) is rotatably connected to a plurality of main shafts (3), and a tool (4) is fixed to the end of the main shaft (3); The output shaft of the motor (1) is connected to a transmission shaft (11) via a coupling, the outer wall of the transmission shaft (11) is connected to a bevel gear (10) in an axially slidable manner only, the outer wall of the main shaft (3) is connected to a sleeve (7) in an axially slidable manner only, a bevel gear (9) that can mesh with the bevel gear (10) is fixed to the end of the sleeve (7), and a position switching component (8) for limiting the position of the sleeve (7) is provided on the inner end surface of the fixed plate (2), and a clutch switching component (6) is provided on the side wall of the bevel gear (10); The clutch switching assembly (6) comprises a pawl 1 (15) fixed to the end surface of the bevel gear 2 (10) and a pawl 2 (16) fixed to the inner wall of the knife seat (5), and the pawl 1 (15) and the pawl 2 (16) can engage with each other; The clutch switching assembly (6) further comprises a permanent magnet (14) fixed to the bevel gear 2 (10) via a connecting tube (13) and an electromagnet (12) fixed to the inner end surface of the fixed disk (2), wherein the electromagnet (12) and the permanent magnet (14) are arranged opposite to each other; The inner wall of the knife seat (5) is rotatably connected to a transition plate (17), the end surface of the transition plate (17) is buckled with a spring 1 (18), and the other end of the spring 1 (18) is buckled with the end surface of the bevel gear 2 (10); Furthermore, the electromagnet (12) and the motor (1) are connected in series to the same circuit.

2. The servo-powered turret of the vertical composite CNC machine tool according to claim 1, characterized in that: The position switching assembly (8) comprises a cam groove (23) formed on the end surface of the fixed disk (2) and a rotating ring (20) rotatably connected to the outer wall of the sleeve (7); the side wall of the rotating ring (20) is rotatably connected to a rotating wheel (22) via a connecting shaft (21); and the rotating wheel (22) is rollingly connected to the inner wall of the cam groove (23).

3. The servo-powered turret of the vertical composite CNC machine tool according to claim 2, characterized in that: The cam groove (23) is provided with a concave portion (19) at the processing position.

4. The servo-powered turret of the vertical composite CNC machine tool according to claim 2, characterized in that: A liquid spray pipe (25) facing the cutter (4) is fixedly embedded in the inner wall of the cutter seat (5) at the cutter (4), a rotary on-off valve (26) is fixed to the other end of the liquid spray pipe (25), all the rotary on-off valves (26) are connected to the same connecting pipe (27), and a fluid driving mechanism (24) is provided at the inlet of the connecting pipe (27).

5. The servo-powered turret of the vertical composite CNC machine tool according to claim 4, characterized in that: The fluid drive mechanism (24) comprises a hose (30) fixed to the knife seat (5) via a bracket and a plurality of squeezing rollers (29) rotatably connected to the outer wall of the second bevel gear (10), the squeezing rollers (29) contacting and squeezing the hose (30), one end of the hose (30) being connected to the inlet of the connecting pipe (27), and the other end of the hose (30) being connected to a connecting pipe (31).

6. The servo-powered turret of the vertical composite CNC machine tool according to claim 5, characterized in that: The connecting pipe (31) is fixedly plugged into and penetrates the end face of the tool holder (5); a limiting protrusion (33) is fixedly disposed on the outer wall of the tool holder (5) at the connecting pipe (31); a transition ring (32) is rotatably connected to the outer wall of the limiting protrusion (33); a liquid inlet hole (34) is formed on the end face of the transition ring (32); and the liquid inlet hole (34) is connected to a cutting fluid storage tank via a pipeline.

7. The servo-powered turret of the vertical composite CNC machine tool according to claim 6, characterized in that: A rack (28) is fixed to the side wall of the sleeve (7), and teeth engaging with the rack (28) are provided on the valve stem of the rotary on-off valve (26).

8. The servo-powered turret of the vertical composite CNC machine tool according to claim 1, characterized in that: The fixing disk (2) is slidably connected to a clamping block (35) and a magnetic sliding rod (37) in the radial direction, and the inner wall of the fixing disk (2) is rotatably connected to a lever (36), both sides of the lever (36) are provided with strip grooves (40), and the clamping block (35) and the magnetic sliding rod (37) are movably limited and matched in the two strip grooves (40) through limiting columns (39).

9. The servo-powered turret of the vertical composite CNC machine tool according to claim 8, characterized in that: The clamping block (35) and the knife seat (5) are provided with teeth that can engage with each other, with the clamping block (35) being provided with teeth that can engage with each other.

10. The servo-powered turret of the vertical composite CNC machine tool according to claim 9, characterized in that: The end of the magnetic sliding rod (37) is connected to the inner wall of the fixed disk (2) via a second spring (38).

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