A servo spindle turret

Abstract

The application provides a servo main shaft tool tower, which comprises a main box body and a tool disc, the tool disc is rotationally connected to the main box body, a bearing seat is arranged in the tool disc, a plurality of main shafts rotationally connected to the tool disc are arranged on the bearing seat, the main shafts are driven by a tool driving mechanism, the tool disc is driven by a tool changing driving mechanism, and a lower inner gear disc and a positioning mechanism are installed in the main box body. Through the above structure, when the tool needs to be changed, the cooperation of the tool changing driving mechanism, the lower inner gear disc and the positioning mechanism can prevent the tool disc from moving and being abraded during frequent tool changing, and when the teeth are abraded, the cooperation of the upper gear disc, the lower outer gear disc and the lower inner gear disc can prevent the main box body from being maintained or repaired, and only the upper gear disc, the lower outer gear disc and the lower inner gear disc need to be replaced, so that the maintenance cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of turrets, in particular to a servo spindle turret. Background Art

[0002] The tool turret is the core functional component of a CNC machining center, primarily used to mount cutting tools for turning, milling, and other operations. The tool turret's primary structure consists of a main housing and a tool disc. The tool disc is equipped with multiple mating spindles and is flexibly connected to the main housing. To switch tools and position the turret, the tool disc must first move along the main housing's axis before rotating around its axis. After switching, the tool disc must be returned to its original position along the main housing's axis to complete the tool change.

[0003] However, when the above-mentioned drive cutter disc moves, it is necessary to drive the entire cutter disc to move horizontally. The cutter disc is heavy, and because the traditional turret is used to ensure the stability after the tool is switched, the end face between the cutter disc and the main box is generally fixed by tooth engagement. Therefore, during the frequent tool changing process, it is easy to cause the teeth on the main box to wear, and when the main box is repaired or maintained, it will lead to an increase in maintenance costs. Summary of the Invention

[0004] The invention discloses a servo spindle turret, which mainly solves the problem that a traditional turret needs to lift a cutter disc before changing a tool.

[0005] To achieve the above-mentioned purpose, the technical solution of the present invention is implemented as follows:

[0006] The present invention provides a servo spindle turret, comprising a main housing and a cutter disc, wherein the cutter disc is rotatably connected to the main housing, a bearing seat is provided in the cutter disc, a plurality of spindles rotatably connected to the cutter disc are provided on the bearing seat, the spindles are driven by a tool drive mechanism, and the cutter disc is driven by a tool change drive mechanism, and a lower inner gear disc and a positioning mechanism are installed in the main housing;

[0007] The tool-changing drive mechanism includes a tool-changing motor, a tool-changing driving gear, a lower outer gear disc and a connecting platform. The tool-changing driving gear is installed at the output end of the tool-changing motor. The outer periphery of the lower outer gear disc is provided with a tool-changing driven gear meshing with the tool-changing driving gear. The top of the lower outer gear disc is provided with a plurality of lower outer teeth. The connecting platform is used to connect the lower outer gear disc and the cutter disc. The connecting platform is provided with a movable groove for accommodating a positioning mechanism.

[0008] The lower inner gear disc is arranged inside the lower outer gear disc, and the top of the lower inner gear disc is provided with lower inner teeth at a position corresponding to the lower outer teeth;

[0009] The positioning mechanism comprises a positioning oil cylinder and an upper toothed disc, the upper toothed disc is provided with a plurality of upper teeth matched with the lower outer teeth and the lower inner teeth, and the positioning oil cylinder is used to drive the upper toothed disc to move in the movable groove, so that the upper toothed disc has a first position and a second position.

[0010] When the upper toothed disc is in the first position, the upper teeth of the upper toothed disc are engaged with the lower outer teeth of the lower outer toothed disc and the lower inner teeth of the lower inner toothed disc at the same time.

[0011] When the upper toothed disc is in the second position, the upper teeth of the upper toothed disc are disengaged from the lower outer teeth of the lower outer toothed disc and the lower inner teeth of the lower inner toothed disc at the same time.

[0012] In an embodiment, the positioning mechanism further comprises a plurality of guide sleeves mounted on the upper toothed disc and a plurality of guide rods mounted on the lower inner toothed disc, and the guide rods are embedded in the guide sleeves.

[0013] In an embodiment, the positioning oil cylinder comprises a cylinder core and a cylinder outer sleeve, the cylinder core is mounted between the bearing seat and the main box, the cylinder outer sleeve is arranged on the cylinder core, and the upper toothed disc is mounted on the cylinder outer sleeve.

[0014] In an embodiment, the bearing seat is provided with a concave tool changing track corresponding to the position of the main shaft, and one end of the main shaft is provided with a protrusion matched with the tool changing track.

[0015] In an embodiment, the main shaft is provided with a water throwing cover and an end cover, the water throwing cover is mounted on the main shaft, the end cover mounts the main shaft on the cutter disc, the outer surface of one end of the water throwing cover close to the end cover is provided with a water blocking ring groove, the water throwing cover is provided with a water guiding stepped groove which gradually decreases in diameter away from the end cover, one end of the end cover is embedded in the water guiding stepped groove, the end cover is provided with a reverse thread corresponding to the position of the water guiding stepped groove, the end cover is provided with a concave water blocking ring groove corresponding to the end of the water throwing cover, and the main shaft is provided with a water throwing ring groove corresponding to the position of the reverse thread.

[0016] In an embodiment, a first sealing ring is arranged between the end cover and the cutter disc, a second sealing ring is arranged between the water throwing cover and the main shaft, and a dustproof ring is arranged between the end cover and the main shaft.

[0017] In an embodiment, the cutter driving mechanism comprises a cutter driving motor, a driving pulley mounted on the cutter driving motor, a transmission shaft rotatably connected in the bearing seat, and a driven pulley mounted on the transmission shaft, the driving pulley and the driven pulley are drivingly connected through a transmission belt, the output end of the transmission shaft is provided with a shaft coupling, the shaft coupling passes through the bearing seat, and the shaft coupling is provided with a matching groove matched with the protrusion of the main shaft.

[0018] In one embodiment, a cooling liquid device is further included, which comprises a plurality of nozzles arranged on the cutter head, each of the main shafts corresponding to one nozzle, and the nozzles are connected with a water source through a connecting assembly.

[0019] In one embodiment, a plurality of connecting holes are arranged on the cutter head and communicated with the corresponding nozzles respectively, the connecting assembly comprises a cylinder, an output end of the cylinder is provided with a connecting seat, a connecting pipe is arranged on the connecting seat, a water inlet pipe is arranged on the connecting seat and communicated with the connecting pipe, the water inlet pipe is connected with the water source, and the cylinder drives the movement of the connecting seat to control the communication or disconnection between the connecting pipe and the connecting hole.

[0020] The advantages or beneficial effects of the above technical solution at least include: when the cutter needs to be replaced, the upper gear plate is driven by the positioning cylinder of the positioning mechanism to move upward in the movable groove of the connecting table to the second position, and then the upper gear of the upper gear plate is separated from the lower outer gear of the lower outer gear plate and the lower inner gear of the lower inner gear plate, so that the cutter replacement motor of the cutter replacement driving mechanism drives the rotation of the cutter replacement driving gear, and the lower outer gear plate is driven to rotate, and the connecting table and the cutter head are driven to rotate by the lower outer gear plate, so that the action of replacing the cutter is realized. After the cutter is replaced, the upper gear plate is driven to move by the positioning cylinder, and the lower outer gear of the lower outer gear plate and the lower inner gear of the lower inner gear plate are matched with the upper gear of the upper gear plate, which can ensure the accuracy of the cutter replacement and ensure that the cutter is in place. Through the cooperation of the structure, the wear of the cutter head during frequent cutter replacement can be prevented, and when the teeth are worn, only the upper gear plate, the lower outer gear plate and the lower inner gear plate need to be replaced during maintenance or maintenance of the main box body, thereby reducing the maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings illustrate exemplary embodiments of the present application and together with the general description given above, and the detailed description given below, explain the principles of the application. These drawings are provided as is to provide further understanding of the present application, and are incorporated in and constitute part of this specification.

[0022] Figure 1 A schematic view of the whole application is shown;

[0023] Figure 2 A schematic view of the whole application is shown; Figure 1 Figure 1 ;

[0024] Figure 3 A schematic view of the whole application is shown; Figure 1 Figure 2 ;

[0025] Figure 4 ​​A partial view of the present application is shown. Figure 3

[0026] Figure 5 An exploded view of the present application is shown.

[0027] Figure 6 A schematic view of the cutter head of the present application is shown.

[0028] Figure 7 A schematic view of the cutter driving mechanism of the present application is shown.

[0029] Figure 8 A schematic view of the tool changing driving mechanism of the present application is shown.

[0030] Figure 9 A schematic view of the cooling liquid device of the present application is shown.

[0031] Explanation of reference signs:

[0032] 1. main box body

[0033] 2. cutter head

[0034] 21. connecting hole

[0035] 3. bearing seat

[0036] 31. tool changing track

[0037] 4. main shaft

[0038] 41. protruding block; 42. water throwing cover; 421. water blocking ring groove; 422. water guiding step groove; 43. end cover; 431. reverse thread; 432. water blocking ring groove; 44. first sealing ring; 45. second sealing ring; 46. dustproof ring; 47. water throwing ring groove

[0039] 5. cutter driving mechanism

[0040] 51. cutter driving motor; 52. driving pulley; 53. transmission shaft; 54. driven pulley; 55. transmission belt; 56. shaft coupling; 561. matching groove

[0041] 6. tool changing driving mechanism

[0042] 61. tool changing motor; 62. tool changing driving gear; 63. lower outer toothed disc; 631. tool changing driven gear; 632. lower outer tooth; 64. connecting platform; 641. movable groove

[0043] 7. lower inner toothed disc

[0044] 71. lower inner tooth

[0045] 8. positioning mechanism

[0046] ​81, positioning oil cylinder; 811, oil cylinder core; 812, oil cylinder cover; 82, upper toothed disc; 821, upper tooth; 83, guide sleeve; 84, guide rod;

[0047] 9, cooling liquid device;

[0048] 91, nozzle; 92, connecting assembly; 921, cylinder; 922, connecting seat; 923, connecting pipe; 924, water inlet pipe. DETAILED DESCRIPTION

[0049] Embodiments of the present application will be described in more detail with reference to the drawings. While several embodiments of the application are shown in the drawings, it is understood that the application can be embodied in various forms and should not be interpreted in a limited sense. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It is understood that the drawings are for illustrative purposes and are not intended to limit the scope of the application.

[0050] It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0051] The term "comprising" and its variants are open-ended, and mean "including but not limited to". The term "based on" means "based, at least in part, on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Related definitions are given throughout the detailed description. It should be noted that the concepts mentioned in the present application are merely used for distinguishing different devices, modules or units, and are not intended to limit the functions of the devices, modules or units.

[0052] It should be noted that the terms "one" and "a" are intended to mean "one or more" unless explicitly indicated to the contrary. It should be noted that the terms "first", "second", etc. are used herein to distinguish different devices, modules or units, and are not intended to limit the functions of the devices, modules or units.

[0053] The names of the messages or information exchanged between the devices in the embodiments of the present application are only used for illustrative purposes, and are not intended to limit the scope of the messages or information.

[0054] Reference is made to Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 8The embodiment of the present application provides a servo main shaft tool tower, which comprises a main box body 1 and a tool disc 2, the tool disc 2 is rotationally connected to the main box body 1, a bearing seat 3 is arranged in the tool disc 2, a plurality of main shafts 4 rotationally connected to the tool disc 2 are arranged on the bearing seat 3, the main shafts 4 are driven by a tool driving mechanism 5, the tool disc 2 is driven by a tool changing driving mechanism 6, a lower inner gear disc 7 and a positioning mechanism 8 are installed in the main box body 1;

[0055] The tool changing driving mechanism 6 comprises a tool changing motor 61, a tool changing driving gear 62, a lower outer gear disc 63 and a connecting table 64, the tool changing driving gear 62 is installed on the output end of the tool changing motor 61, a tool changing driven gear 631 meshing with the tool changing driving gear 62 is arranged on the outer periphery of the lower outer gear disc 63, a plurality of lower outer teeth 632 are arranged on the top of the lower outer gear disc 63, the connecting table 64 is used for connecting the lower outer gear disc 63 and the tool disc 2, and a movable groove 641 used for accommodating the positioning mechanism 8 is arranged on the connecting table 64;

[0056] The lower inner gear disc 7 is arranged in the lower outer gear disc 63, and a lower inner tooth 71 is arranged on the top of the lower inner gear disc 7 corresponding to the position of the lower outer tooth 632;

[0057] The positioning mechanism 8 comprises a positioning oil cylinder 81 and an upper gear disc 82, a plurality of upper teeth 821 matched with the lower outer tooth 632 and the lower inner tooth 71 are arranged on the upper gear disc 82, and the positioning oil cylinder 81 is used for driving the upper gear disc 82 to move in the movable groove 641, so that the upper gear disc 82 has a first position and a second position;

[0058] When the upper gear disc 82 is in the first position, the upper teeth 821 of the upper gear disc 82 are simultaneously meshed with the lower outer teeth 632 of the lower outer gear disc 63 and the lower inner teeth 71 of the lower inner gear disc 7;

[0059] When the upper gear disc 82 is in the second position, the upper teeth 821 of the upper gear disc 82 are simultaneously disengaged from the lower outer teeth 632 of the lower outer gear disc 63 and the lower inner teeth 71 of the lower inner gear disc 7.

[0060] With the above structure, when the tool needs to be changed, the positioning cylinder 81 of the positioning mechanism 8 drives the upper gear plate 82 to move upward in the movable groove 641 of the connecting table 64 to the second position, and then the upper teeth 821 of the upper gear plate 82 are simultaneously separated from the lower outer teeth 632 of the lower outer gear plate 63 and the lower inner teeth 71 of the lower inner gear plate 7, so that the tool changing motor 61 of the tool changing drive mechanism 6 drives the tool changing driving gear 62 to rotate, and the lower outer gear plate 63 is driven to rotate under the meshing of the tool changing driving gear 62 and the tool changing driven gear 631 of the lower outer gear plate 63, and the connecting table 64 and the tool disc 2 are rotated by the lower outer gear plate 63, thereby realizing the action of tool changing. After the tool is changed, the upper gear plate 82 is driven by the positioning cylinder 81 to move downward in the movable groove 641 of the connecting table 64 to the first position, and then the lower outer teeth 632 of the lower outer gear plate 63 and the lower inner teeth 71 of the lower inner gear plate 7 are matched with the upper teeth 821 of the upper gear plate 82, which can ensure the accuracy of tool changing and ensure that the tool is in place. Through the cooperation of the structure, the tool disc 2 can be prevented from being worn out during frequent tool changing. Moreover, when the teeth are worn out, only the upper gear plate 82, the lower outer gear plate 63 and the lower inner gear plate 7 need to be replaced during maintenance of the main box 1, thereby reducing maintenance cost.

[0061] In one embodiment, referring to Figure 8 , the positioning mechanism 8 further comprises a plurality of guide sleeves 83 mounted on the upper gear plate 82 and a plurality of guide rods 84 mounted on the lower inner gear plate 7, and the guide rods 84 are embedded in the guide sleeves 83. In actual use, the rotation of the upper gear plate 82 can be limited through the cooperation of the guide rods 84 and the guide sleeves 83.

[0062] The positioning cylinder 81 comprises a cylinder core 811 and a cylinder sleeve 812, the cylinder core 811 is mounted between the bearing seat 3 and the main box 1, and the cylinder sleeve 812 is arranged on the cylinder core 811, and the upper gear plate 82 is mounted on the cylinder sleeve 812. In actual use, when hydraulic oil is injected into the cylinder core 811, the movement of the cylinder sleeve 812 can be driven, so that the movement of the upper gear plate 82 can be controlled to realize the position switching of the first position and the second position of the upper gear plate 82.

[0063] In one embodiment, referring to Figure 2 , Figure 3 and Figure 5 , the bearing seat 3 is provided with an inner recessed tool changing track 31 corresponding to the position of the main shaft 4, and one end of the main shaft 4 is provided with a protrusion 41 matched with the tool changing track 31. In actual use, the main shaft 4 can rotate along the tool changing track 31 when the tool disc 2 rotates through the cooperation of the protrusion 41 and the tool changing track 31.

[0064] In an embodiment, referring to Figure 3 and Figure 4 , the main shaft 4 is provided with a water throwing cover 42 and an end cover 43, the water throwing cover 42 is installed on the main shaft 4, the end cover 43 installs the main shaft 4 on the cutter head 2, the outer surface of the end close to the water throwing cover 42 is provided with a water blocking ring groove 421, the water throwing cover 42 is provided with a water guide stepped groove 422 which gradually decreases in diameter away from the end cover 43, one end of the end cover 43 is embedded in the water guide stepped groove 422, the end cover 43 is provided with a reverse thread 431 corresponding to the position of the water guide stepped groove 422, the end cover 43 is provided with an inner concave water blocking ring groove 432 corresponding to the end of the water throwing cover 42, and the main shaft 4 is provided with a water throwing ring groove 47 corresponding to the position of the reverse thread 431. In actual use, through the cooperation of the water throwing cover 42 and the end cover 43, the water blocking ring groove 421 on the water throwing cover 42 can shield the water entering between the water throwing cover 42 and the end cover 43, through the setting of the water guide stepped groove 422, the water throwing cover 42 can be rotated when the main shaft 4 rotates, so that the water can be thrown out along the direction of the gradually increasing diameter of the water guide stepped groove 422; when the main shaft 4 is in a static state, the water will flow out along the reverse thread 431 and the water blocking ring groove 432 of the end cover 43; in the process of rotating the main shaft 4, through the setting of the water throwing ring groove 47, the water can be thrown to the end cover 43, and then flow along the end cover 43 to the water throwing cover 42, and then thrown out by the water throwing cover 42.

[0065] The end cover 43 and the cutter head 2 are provided with a first sealing ring 44, the water throwing cover 42 and the main shaft 4 are provided with a second sealing ring 45, and the end cover 43 and the main shaft 4 are provided with a dustproof ring 46. Among them, the dustproof ring 46 can be wool felt, which can prevent dust; in actual use, through the setting of the first sealing ring 44 and the second sealing ring 45, the sealing effect between the end cover 43 and the cutter head 2 and between the water throwing cover 42 and the main shaft 4 can be ensured, so as to prevent water from entering the main shaft 4 through the gap between the end cover 43 and the cutter head 2 and between the water throwing cover 42 and the main shaft 4.

[0066] In an embodiment, referring to Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 7The tool driving mechanism 5 comprises a tool driving motor 51, a driving pulley 52 mounted on the tool driving motor 51, a transmission shaft 53 rotatably connected in the bearing seat 3, a driven pulley 54 mounted on the transmission shaft 53, and the driving pulley 52 is in driving connection with the driven pulley 54 through a transmission belt 55. The output end of the transmission shaft 53 is provided with a coupling 56, the coupling 56 passes through the bearing seat 3, and the coupling 56 is provided with a matching groove 561 matched with the protrusion 41 of the main shaft 4. In actual application, through the cooperation of the driving pulley 52, the driven pulley 54 and the transmission belt 55, the power of the tool driving motor 51 can be transmitted to the transmission shaft 53, so that the transmission shaft 53 can drive the rotation of the coupling 56, and the matching groove 561 on the coupling 56 cooperates with the protrusion 41 of the main shaft 4, so that the main shaft 4 can be driven to rotate to drive the corresponding tool to work.

[0067] In one embodiment, referring to Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 and Figure 9 , the cooling liquid device 9 comprises a plurality of nozzles 91 arranged on the cutter head 2, each main shaft 4 corresponds to a nozzle 91, and the nozzle 91 is connected with a water source through a connecting assembly 92. In actual application, through the cooperation of the plurality of nozzles 91 and the connecting assembly 92 of the cooling liquid device 9, the water source can be provided for the nozzles 91, and the water can be sprayed to the tool, so as to realize the cooling effect when the main shaft 4 drives the tool to work.

[0068] The cutter head 2 is provided with a plurality of connecting holes 21 respectively communicated with the corresponding nozzles 91, and the connecting assembly 92 comprises an air cylinder 921, the output end of the air cylinder 921 is provided with a connecting seat 922, the connecting seat 922 is provided with a connecting pipe 923, the connecting seat 922 is provided with a water inlet pipe 924 communicated with the connecting pipe 923, the water inlet pipe 924 is connected with a water source, the air cylinder 921 drives the movement of the connecting seat 922 to control the communication or disconnection of the connecting pipe 923 and the connecting hole 21. In actual application, through the arrangement of the connecting assembly 92, when the tool is replaced, the connecting pipe 923 is driven to move away from the connecting hole 21 by the air cylinder 921, so that the rotation of the cutter head 2 is facilitated, and after the tool replacement is completed, the connecting seat 922 is driven to move, so that the connecting pipe 923 is connected with the connecting hole 21, and the water in the water inlet pipe 924 can enter the nozzle 91 through the connecting pipe 923.

[0069] In the description of the application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0070] Those skilled in the art will understand that the above embodiments are only for the purpose of clearly illustrating the application, and are not intended to limit the scope of the application. Other changes or modifications can be made by those skilled in the art based on the above application, and these changes or modifications are still within the scope of the application.

Claims

1. A servo spindle turret, characterized by, The utility model provides a cutting tool, including main box and cutter head, the cutter head is rotatably connected on main box, be provided with a plurality of main shafts with cutter head rotation connection in the cutter head and be provided with bearing seat, the main shaft is driven by tool driving mechanism, the cutter head is driven by tool changing driving mechanism, install lower inner toothed disc and positioning mechanism in main box, The tool changing driving mechanism includes tool changing motor, tool changing driving gear, lower outer toothed disc and connecting table, the tool changing driving gear is installed to the output of tool changing motor, the outer periphery of lower outer toothed disc is provided with tool changing driven gear and is engaged with tool changing driving gear, the top of lower outer toothed disc is provided with a plurality of lower outer teeth, the connecting table is used to connect lower outer toothed disc and cutter head, the connecting table is provided with movable slot for accommodating positioning mechanism, The lower inner toothed disc is arranged in the lower outer toothed disc, and the top of the lower inner toothed disc is provided with lower inner teeth corresponding to the positions of the lower outer teeth. The positioning mechanism includes a positioning cylinder and an upper toothed disc, the upper toothed disc is provided with a plurality of upper teeth matched with the lower outer teeth and the lower inner teeth, and the positioning cylinder is used to drive the upper toothed disc to move in the movable slot, so that the upper toothed disc has a first position and a second position. When the upper toothed disc is in the first position, the upper teeth of the upper toothed disc are engaged with the lower outer teeth of the lower outer toothed disc and the lower inner teeth of the lower inner toothed disc at the same time. When the upper toothed disc is in the second position, the upper teeth of the upper toothed disc are disengaged from the lower outer teeth of the lower outer toothed disc and the lower inner teeth of the lower inner toothed disc at the same time. The positioning mechanism further includes a plurality of guide sleeves mounted on the upper toothed disc and a plurality of guide rods mounted on the lower inner toothed disc, and the guide rods are embedded in the guide sleeves. The main shaft is provided with a water throwing cover and an end cover, the water throwing cover is installed on the main shaft, the end cover is used to install the main shaft on the cutter head, the outer surface of one end of the water throwing cover close to the end cover is provided with a water blocking ring groove, the water throwing cover is provided with a water guide ladder groove with a gradually decreasing diameter away from the end cover, one end of the end cover is embedded in the water guide ladder groove, the end cover is provided with a reverse thread corresponding to the position of the water guide ladder groove, the end cover is provided with an inner concave water blocking ring groove corresponding to the end of the water throwing cover, and the main shaft is provided with a water throwing ring groove corresponding to the position of the reverse thread. The utility model further includes a cooling liquid device, the cooling liquid device includes a plurality of nozzles arranged on the cutter head, each main shaft corresponds to a nozzle, and the nozzle is connected with a water source through a connecting assembly. The cutter head is provided with a plurality of connecting holes respectively communicated with corresponding nozzles, and the connecting assembly includes an air cylinder, the output end of the air cylinder is provided with a connecting seat, the connecting seat is provided with a connecting pipe, the connecting seat is provided with a water inlet pipe communicated with the connecting pipe, the water inlet pipe is connected with the water source, and the air cylinder drives the movement of the connecting seat to control the communication or disconnection of the connecting pipe and the connecting hole.

2. The servo spindle turret of claim 1, wherein, The positioning cylinder includes a cylinder core and a cylinder sleeve, the cylinder core is installed between the bearing seat and the main box, and the cylinder sleeve is arranged on the cylinder core. The upper toothed disc is installed on the cylinder sleeve.

3. The servo spindle turret according to claim 1, wherein: The bearing seat is provided with a concave tool changing track corresponding to the position of the main shaft, and one end of the main shaft is provided with a protrusion matched with the tool changing track.

4. The servo spindle turret of claim 1 wherein, The first sealing ring is arranged between the end cover and the cutter head, the second sealing ring is arranged between the water throwing cover and the main shaft, and the dustproof ring is arranged between the end cover and the main shaft.

5. The servo spindle turret of claim 1 wherein, The cutter driving mechanism comprises a cutter driving motor, a driving pulley mounted on the cutter driving motor, a transmission shaft rotatably connected in the bearing seat and a driven pulley mounted on the transmission shaft, the driving pulley and the driven pulley are drivingly connected through a transmission belt, a shaft coupling is mounted on the output end of the transmission shaft, the shaft coupling passes through the bearing seat, and a matching groove matched with the protrusion of the main shaft is arranged on the shaft coupling.

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