Servo spindle tool turret

Abstract

The servo spindle tool turret 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 spindles rotationally connected with the tool disc are arranged on the bearing seat, the spindles are driven by a tool driving mechanism, the tool disc is driven by a tool changing driving mechanism, and a lower inner fluted disc and a positioning mechanism are installed in the main box body. By means of the structure, when a cutter needs to be replaced, the cutter head can be prevented from moving and being abraded in the frequent cutter replacing process under the cooperation of the cutter replacing driving mechanism, the lower inner fluted disc and the positioning mechanism, and when teeth are abraded under the cooperation of the upper fluted disc, the lower outer fluted disc and the lower inner fluted disc, the cutter head can be prevented from moving and being abraded. And when the main box body is repaired or maintained, only the upper fluted disc, the lower outer fluted disc and the lower inner fluted 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, and particularly to a servo main shaft turret. Background Art

[0002] The turret is a core functional component of a CNC machining center, mainly used for installing tools to achieve functions such as turning and milling. The main structure of the turret includes a main body and a tool disc. The tool disc is provided with a plurality of cooperating main shafts. The tool disc is movably connected to the main body. When the turret switches tools and positions, the tool disc needs to first move along the axial direction of the main body and then rotate around the axis of the main body. After switching, the tool disc also needs to be moved along the axial direction of the main body to the original position to complete the tool switching.

[0003] However, when driving the movement of the tool disc as described above, it is necessary to drive the translation of the entire tool disc. The tool disc is relatively heavy, and since the traditional turret generally fixes the end face between the tool disc and the main body by tooth meshing to ensure the stability after tool switching, during frequent tool changing processes, the teeth on the main body are likely to be worn, and when repairing or maintaining the main body, it will lead to an increase in maintenance costs. Summary of the Invention

[0004] The present invention discloses a servo main shaft turret, mainly solving the problem that the traditional turret needs to lift the tool disc to change tools.

[0005] To achieve the above object, the technical solution of the present invention is realized as follows: The present invention provides a servo main shaft turret, including a main body and a tool disc. The tool disc is rotatably connected to the main body. A bearing seat is arranged in the tool disc, and a plurality of main shafts rotatably connected to the tool disc are arranged on the bearing seat. The main shafts are driven by a tool driving mechanism, and the tool disc is driven by a tool changing driving mechanism. A lower internal gear disc and a positioning mechanism are installed in the main body; The tool changing driving mechanism includes a tool changing motor, a tool changing driving gear, a lower external gear disc, and a connecting platform. The tool changing driving gear is installed at the output end of the tool changing motor. A tool changing driven gear meshing with the tool changing driving gear is arranged on the outer periphery of the lower external gear disc. A plurality of lower external teeth are arranged on the top of the lower external gear disc. The connecting platform is used to connect the lower external gear disc and the tool disc, and a movable groove for accommodating the positioning mechanism is arranged on the connecting platform; The lower internal gear disc is arranged inside the lower external gear disc, and lower internal teeth corresponding to the positions of the lower external teeth are arranged on the top of the lower internal gear disc; The positioning mechanism includes a positioning oil cylinder and an upper gear disc. A plurality of upper teeth cooperating with the lower external teeth and the lower internal teeth are arranged on the upper gear disc. The positioning oil cylinder is used to drive the upper gear disc to move in the movable groove, so that the upper gear disc has a first position and a second position; When the upper tooth disc is in the first position, the upper teeth of the upper tooth disc are simultaneously engaged with the lower outer teeth of the lower outer tooth disc and the lower inner teeth of the lower inner tooth disc. When the upper tooth disc is in the second position, the upper teeth of the upper tooth disc are simultaneously disengaged from the lower outer teeth of the lower outer tooth disc and the lower inner teeth of the lower inner tooth disc.

[0006] In one embodiment, the positioning mechanism further includes a plurality of guide sleeves mounted on the upper tooth disc and a plurality of guide rods mounted on the lower inner tooth disc, and the guide rods are embedded in the guide sleeves.

[0007] In one embodiment, the positioning oil cylinder includes an oil cylinder core and an oil cylinder outer sleeve. The oil cylinder core is installed between the bearing seat and the main box body, the oil cylinder outer sleeve is arranged on the oil cylinder core, and the upper tooth disc is installed on the oil cylinder outer sleeve.

[0008] In one embodiment, the bearing seat is provided with an inwardly concave tool change track corresponding to the position of the main shaft, and one end of the main shaft is provided with a convex block matching the tool change track.

[0009] In one embodiment, a water throwing cover and an end cover are arranged on the main shaft. The water throwing cover is installed on the main shaft, the end cover mounts the main shaft on the tool disc. A water retaining ring groove is arranged on the outer surface of one end of the water throwing cover close to the end cover. A water guiding stepped groove with a gradually decreasing diameter away from the end cover is arranged inside the water throwing 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 water guiding stepped groove, and an inwardly concave water blocking ring groove is arranged at the end of the end cover corresponding to the water throwing cover. The main shaft is provided with a water throwing ring groove corresponding to the reverse thread.

[0010] In one embodiment, a first sealing ring is arranged between the end cover and the tool disc, a second sealing ring is arranged between the water throwing cover and the main shaft, and a dust-proof ring is arranged between the end cover and the main shaft.

[0011] In one embodiment, the tool driving mechanism includes a tool driving motor, a driving pulley mounted on the tool 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 connected by a transmission belt. The output end of the transmission shaft is provided with a coupling. The coupling passes through the bearing seat, and a mating groove matching the convex block of the main shaft is arranged on the coupling.

[0012] In one embodiment, a coolant device is further included. The coolant device includes a plurality of nozzles arranged on the tool disc. Each main shaft corresponds to one nozzle, and the nozzle is connected to a water source through a connecting component.

[0013] In one embodiment, a plurality of connection holes respectively communicating with corresponding nozzles are provided on the cutter head. The connection assembly includes a cylinder, a connection seat is provided at the output end of the cylinder, a connection pipe is provided on the connection seat, a water inlet pipe communicating with the connection pipe is provided on the connection seat, the water inlet pipe is externally connected to a water source, and the cylinder drives the movement of the connection seat to control the connection or disconnection of the connection pipe and the connection hole.

[0014] The advantages or beneficial effects in the above technical solutions at least include: when a tool change is required, through the cooperation of the tool change driving mechanism, the lower internal gear disk and the positioning mechanism, after the positioning oil cylinder of the positioning mechanism drives the upper gear disk to move upward in the movable slot of the connection platform to the second position, the upper teeth of the upper gear disk are simultaneously disengaged from the lower external teeth of the lower external gear disk and the lower internal teeth of the lower internal gear disk, and then the tool change motor of the tool change driving mechanism can be driven to rotate the tool change driving gear. Under the engagement of the tool change driving gear and the tool change driven gear of the lower external gear disk, the lower external gear disk is driven to rotate, and the connection platform and the cutter head are driven to rotate by the lower external gear disk, so as to realize the tool change operation. After the tool change, the positioning oil cylinder drives the upper gear disk to move, and the cooperation of the lower external teeth of the lower external gear disk and the lower internal teeth of the lower internal gear disk with the upper teeth of the upper gear disk can ensure the accuracy of the tool change to ensure that the tool change is in place. Through the cooperation of this structure, the movement of the cutter head during frequent tool changes can be prevented from wearing, and through the cooperation of the upper gear disk, the lower external gear disk and the lower internal gear disk, when the teeth are worn, during the repair or maintenance of the main box body, only the upper gear disk, the lower external gear disk and the lower internal gear disk need to be replaced, reducing the maintenance cost. Description of the Drawings

[0015] The drawings illustrate exemplary embodiments of the present invention and, together with the description, are used to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention, and the drawings are included in this specification and form a part of this specification.

[0016] Figure 1 Shows a schematic diagram of the whole of the present invention; Figure 2 Shows the present invention Figure 1 Schematic cross-section Figure 1 ; Figure 3 Shows the present invention Figure 1 Schematic cross-section Figure 2 ; Figure 4 Shows the present invention Figure 3 Partial schematic diagram; Figure 5 Shows the exploded schematic diagram of the whole of the present invention; Figure 6 Shows a schematic diagram of the cutter head of the present invention; Figure 7Shows a schematic diagram of the tool driving mechanism of the present invention; Figure 8 Shows a schematic diagram of the tool changing driving mechanism of the present invention; Figure 9 Shows a schematic diagram of the coolant device of the present invention.

[0017] Explanation of reference numerals: 1. Main housing; 2. Tool disc; 21. Connecting hole; 3. Bearing housing; 31. Tool changing track; 4. Spindle; 41. Bump; 42. Water throwing cover; 421. Water retaining ring groove; 422. Water guiding stepped groove; 43. End cover; 431. Reverse thread; 432. Water blocking ring groove; 44. First sealing ring; 45. Second sealing ring; 46. Dust-proof ring; 47. Water throwing ring groove. 5. Tool driving mechanism; 51. Tool driving motor; 52. Driving pulley; 53. Transmission shaft; 54. Driven pulley; 55. Transmission belt; 56. Coupling; 561. Fitting groove. 6. Tool changing driving mechanism; 61. Tool changing motor; 62. Tool changing driving gear; 63. Lower outer tooth disc; 631. Tool changing driven gear; 632. Lower outer teeth; 64. Connecting platform; 641. Moving groove. 7. Lower inner tooth disc; 71. Lower inner teeth; 8. Positioning mechanism; 81. Positioning oil cylinder; 811. Oil cylinder core; 812. Oil cylinder outer sleeve; 82. Upper tooth disc; 821. Upper teeth; 83. Guide sleeve; 84. Guide rod. 9. Coolant device; 91. Nozzle; 92. Connecting assembly; 921. Cylinder; 922. Connecting seat; 923. Connecting pipe; 924. Water inlet pipe. Detailed implementation manners

[0018] Embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Although some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not used to limit the protection scope of the present invention.

[0019] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0020] As used herein, the term "comprising" and its variations are open-ended, that is, "including but not limited to". The term "based on" means "at least partially based 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". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts such as "first" and "second" mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0021] It should be noted that the modifications of "one" and "plural" mentioned in the present invention are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly stated in the context, it should be understood as "one or more".

[0022] The names of the messages or information exchanged between multiple devices in the embodiments of the present invention are only for illustrative purposes and are not used to limit the scope of these messages or information.

[0023] See Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 、 Figure 8 , an embodiment of the present invention provides a servo main shaft turret, including a main box body 1 and a tool disc 2. The tool disc 2 is rotatably connected to the main box body 1. A bearing seat 3 is arranged in the tool disc 2. A plurality of main shafts 4 rotatably 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, and the tool disc 2 is driven by a tool changing driving mechanism 6. A lower internal gear disc 7 and a positioning mechanism 8 are installed in the main box body 1; The tool changing driving mechanism 6 includes a tool changing motor 61, a tool changing driving gear 62, a lower external gear disc 63 and a connecting platform 64. The tool changing driving gear 62 is installed at 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 external gear disc 63. A plurality of lower external teeth 632 are arranged on the top of the lower external gear disc 63. The connecting platform 64 is used to connect the lower external gear disc 63 and the tool disc 2. An activity groove 641 for accommodating the positioning mechanism 8 is arranged on the connecting platform 64; The lower internal gear disc 7 is arranged in the lower external gear disc 63. Lower internal teeth 71 are arranged at positions corresponding to the lower external teeth 632 on the top of the lower internal gear disc 7; The positioning mechanism 8 includes a positioning oil cylinder 81 and an upper tooth disc 82. A plurality of upper teeth 821 that cooperate with the lower outer teeth 632 and the lower inner teeth 71 are provided on the upper tooth disc 82. The positioning oil cylinder 81 is used to drive the upper tooth disc 82 to move within the movable slot 641, so that the upper tooth disc 82 has a first position and a second position; When the upper tooth disc 82 is in the first position, the upper teeth 821 of the upper tooth disc 82 are simultaneously engaged with the lower outer teeth 632 of the lower outer tooth disc 63 and the lower inner teeth 71 of the lower inner tooth disc 7; When the upper tooth disc 82 is in the second position, the upper teeth 821 of the upper tooth disc 82 are simultaneously disengaged from the lower outer teeth 632 of the lower outer tooth disc 63 and the lower inner teeth 71 of the lower inner tooth disc 7.

[0024] With the above structure, when a tool change is required, under the cooperation of the tool change driving mechanism 6, the lower inner tooth disc 7 and the positioning mechanism 8, the positioning oil cylinder 81 of the positioning mechanism 8 drives the upper tooth disc 82 to move upward in the movable slot 641 of the connecting table 64 to the second position, so that the upper teeth 821 of the upper tooth disc 82 are simultaneously disengaged from the lower outer teeth 632 of the lower outer tooth disc 63 and the lower inner teeth 71 of the lower inner tooth disc 7. Then, the tool change motor 61 of the tool change driving mechanism 6 can be used to drive the tool change driving gear 62 to rotate. Under the engagement of the tool change driving gear 62 and the tool change driven gear 631 of the lower outer tooth disc 63, the lower outer tooth disc 63 is driven to rotate, and the connecting table 64 and the tool disc 2 are driven to rotate by the lower outer tooth disc 63, thus realizing the tool change action. After the tool change, the positioning oil cylinder 81 drives the upper tooth disc 82 to move downward in the movable slot 641 of the connecting table 64 to the first position. Through the cooperation of the lower outer teeth 632 of the lower outer tooth disc 63 and the lower inner teeth 71 of the lower inner tooth disc 7 with the upper teeth 821 of the upper tooth disc 82, the accuracy of the tool change can be ensured to ensure that the tool change is in place. Through the cooperation of this structure, the movement of the tool disc 2 during frequent tool changes can be prevented from wearing. Moreover, through the cooperation of the upper tooth disc 82, the lower outer tooth disc 63 and the lower inner tooth disc 7, when the teeth are worn, during the repair or maintenance of the main housing 1, only the upper tooth disc 82, the lower outer tooth disc 63 and the lower inner tooth disc 7 need to be replaced, reducing the maintenance cost.

[0025] In one embodiment, referring to Figure 8 , the positioning mechanism 8 further includes a plurality of guide sleeves 83 mounted on the upper tooth disc 82 and a plurality of guide rods 84 mounted on the lower inner tooth disc 7. The guide rods 84 are inserted into the guide sleeves 83. In actual use, through the cooperation of the guide rods 84 and the guide sleeves 83, the rotation of the upper tooth disc 82 can be restricted.

[0026] The positioning oil cylinder 81 includes an oil cylinder core 811 and an oil cylinder outer sleeve 812. The oil cylinder core 811 is installed between the bearing block 3 and the main box body 1, the oil cylinder outer sleeve 812 is arranged on the oil cylinder core 811, and the upper tooth disc 82 is installed on the oil cylinder outer sleeve 812. In actual use, with the cooperation of the oil cylinder core 811 and the oil cylinder outer sleeve 812, when hydraulic oil is injected into the oil cylinder core 811, the movement of the oil cylinder outer sleeve 812 can be driven, so as to control the movement of the upper tooth disc 82, and the position switching between the first position and the second position of the upper tooth disc 82 can be realized.

[0027] In one embodiment, referring to Figure 2 、 Figure 3 and Figure 5 , the bearing block 3 is provided with an inwardly concave tool change track 31 corresponding to the position of the main shaft 4, and one end of the main shaft 4 is provided with a convex block 41 matching the tool change track 31. In actual use, with the cooperation of the convex block 41 and the tool change track 31, when the tool disc 2 rotates, the main shaft 4 can be made to rotate along the tool change track 31.

[0028] In one embodiment, referring to Figure 3 and Figure 4 , a water throwing cover 42 and an end cover 43 are arranged on the main shaft 4. The water throwing cover 42 is installed on the main shaft 4, the end cover 43 installs the main shaft 4 on the tool disc 2. A water retaining ring groove 421 is arranged on the outer surface of one end of the water throwing cover 42 close to the end cover 43. A water guiding stepped groove 422 with a gradually decreasing diameter away from the end cover 43 is arranged inside the water throwing cover 42. One end of the end cover 43 is embedded in the water guiding stepped groove 422. An anti-thread 431 is arranged on the end cover 43 corresponding to the water guiding stepped groove 422. A water blocking ring groove 432 is arranged on the end cover 43 corresponding to the end of the water throwing cover 42. A water throwing ring groove 47 is arranged on the main shaft 4 corresponding to the anti-thread 431. In actual use, with 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 block the water entering between the water throwing cover 42 and the end cover 43. With the arrangement of the water guiding stepped groove 422, when the main shaft 4 rotates, the water throwing cover 42 can be driven to rotate, so that the water can be thrown out along the direction of the gradually increasing diameter of the water guiding stepped groove 422; when the main shaft 4 is in a static state, the water will flow out along the anti-thread 431 and the water blocking ring groove 432 of the end cover 43; during the rotation of the main shaft 4, with the arrangement of the water throwing ring groove 47, the water can be thrown towards the end cover 43, and the water can flow along the end cover 43 to the water throwing cover 42 and then be thrown out by the water throwing cover 42.

[0029] A first sealing ring 44 is provided between the end cover 43 and the cutter head 2, a second sealing ring 45 is provided between the water throwing cover 42 and the main shaft 4, and a dust-proof ring 46 is provided between the end cover 43 and the main shaft 4. Among them, the dust-proof ring 46 can be made of wool felt to play a role in dust prevention; in actual use, through the settings of the first sealing ring 44 and the second sealing ring 45, the sealing effects 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 gaps between the end cover 43 and the cutter head 2 and between the water throwing cover 42 and the main shaft 4.

[0030] In one embodiment, referring to Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 7 , the tool driving mechanism 5 includes a tool driving motor 51, a driving pulley 52 mounted on the tool driving motor 51, a transmission shaft 53 rotatably connected to the bearing block 3, and a driven pulley 54 mounted on the transmission shaft 53. The driving pulley 52 and the driven pulley 54 are drivingly connected by 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 block 3, and a mating groove 561 matching the convex block 41 of the main shaft 4 is provided on the coupling 56. In actual use, 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 with the cooperation of the mating groove 561 on the coupling 56 and the convex block 41 of the main shaft 4, the main shaft 4 can be driven to rotate to drive the corresponding tool to work.

[0031] In one embodiment, referring to Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 9 , it further includes a coolant device 9. The coolant device 9 includes a plurality of nozzles 91 provided on the cutter head 2. Each main shaft 4 corresponds to one nozzle 91. The nozzle 91 is connected to a water source through a connection assembly 92. In actual use, through the cooperation of the plurality of nozzles 91 and the connection assembly 92 of the coolant device 9, a water source can be provided for the nozzle 91 to spray water onto the tool, so as to play a role in cooling when the main shaft 4 drives the tool for processing.

[0032] A plurality of connecting holes 21 respectively communicating with corresponding nozzles 91 are provided on the cutter head 2. The connecting assembly 92 includes a cylinder 921. A connecting seat 922 is provided at the output end of the cylinder 921. A connecting pipe 923 is provided on the connecting seat 922. A water inlet pipe 924 communicating with the connecting pipe 923 is provided on the connecting seat 922. The water inlet pipe 924 is externally connected to a water source. The cylinder 921 drives the movement of the connecting seat 922 to control the connection or disconnection between the connecting pipe 923 and the connecting hole 21. In actual application, with the arrangement of the connecting assembly 92, when changing the cutter, the cylinder 921 drives the movement of the connecting seat 922 to separate the connecting pipe 923 from the connecting hole 21, which facilitates the rotation of the cutter head 2. After the cutter change is completed, the connecting seat 922 can be driven to move so that the connecting pipe 923 is connected to the connecting hole 21, enabling the water in the water inlet pipe 924 to enter the nozzle 91 through the connecting pipe 923.

[0033] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0034] Those skilled in the art should understand that the above embodiments are only for clearly explaining the present invention, rather than limiting the scope of the present invention. For those skilled in the art, other changes or modifications can be made based on the above invention, and these changes or modifications are still within the scope of the present invention.

Claims

1. A servo main shaft turret, characterized in that It includes a main housing and a cutter head. The cutter head is rotatably connected to the main housing. A bearing seat is provided in the cutter head. A plurality of main shafts rotatably connected to the cutter head are provided on the bearing seat. The main shafts are driven by a tool driving mechanism, and the cutter head is driven by a tool changing driving mechanism. A lower internal gear disc and a positioning mechanism are installed in the main housing; The tool changing driving mechanism includes a tool changing motor, a tool changing driving gear, a lower external gear disc and a connecting platform. The tool changing driving gear is installed at the output end of the tool changing motor. A tool changing driven gear meshing with the tool changing driving gear is provided on the outer periphery of the lower external gear disc. A plurality of lower external teeth are provided on the top of the lower external gear disc. The connecting platform is used to connect the lower external gear disc and the cutter head. An activity groove for accommodating the positioning mechanism is provided on the connecting platform; The lower internal gear disc is arranged inside the lower external gear disc. Lower internal teeth are provided at positions corresponding to the lower external teeth on the top of the lower internal gear disc; The positioning mechanism includes a positioning oil cylinder and an upper gear disc. A plurality of upper teeth matching with the lower external teeth and the lower internal teeth are provided on the upper gear disc. The positioning oil cylinder is used to drive the upper gear disc to move in the activity groove so that the upper gear disc has a first position and a second position; When the upper gear disc is in the first position, the upper teeth of the upper gear disc are simultaneously meshed with the lower external teeth of the lower external gear disc and the lower internal teeth of the lower internal gear disc; When the upper gear disc is in the second position, the upper teeth of the upper gear disc are simultaneously disengaged from the lower external teeth of the lower external gear disc and the lower internal teeth of the lower internal gear disc.

2. The servo main shaft turret according to claim 1, wherein The positioning mechanism further includes a plurality of guide sleeves installed on the upper gear disc and a plurality of guide rods installed on the lower internal gear disc. The guide rods are embedded in the guide sleeves.

3. The servo spindle turret according to claim 1, characterized in that, The positioning oil cylinder includes an oil cylinder core and an oil cylinder outer sleeve. The oil cylinder core is installed between the bearing seat and the main housing. The oil cylinder outer sleeve is arranged on the oil cylinder core. The upper gear disc is installed on the oil cylinder outer sleeve.

4. The servo main shaft turret according to claim 1, characterized in that, An inwardly concave tool changing track is provided at a position of the bearing seat corresponding to the main shaft. A convex block matching with the tool changing track is provided at one end of the main shaft.

5. The servo main shaft turret according to claim 1, wherein A water throwing cover and an end cover are provided on the main shaft. The water throwing cover is installed on the main shaft. The end cover installs the main shaft on the cutter head. A water retaining ring groove is provided on the outer surface of one end of the water throwing cover close to the end cover. A water guiding stepped groove with a diameter gradually decreasing away from the end cover is provided inside the water throwing cover. One end of the end cover is embedded in the water guiding stepped groove. Reverse thread is provided at a position of the end cover corresponding to the water guiding stepped groove. An inwardly concave water blocking ring groove is provided at the end of the end cover corresponding to the water throwing cover. A water throwing ring groove is provided at a position of the main shaft corresponding to the reverse thread.

6. The servo main shaft turret according to claim 5, wherein, A first sealing ring is provided between the end cover and the cutter head. A second sealing ring is provided between the water throwing cover and the main shaft. A dust-proof ring is provided between the end cover and the main shaft.

7. The servo main shaft turret according to claim 4, characterized in that The tool driving mechanism includes a tool driving motor, a driving pulley installed on the tool driving motor, a transmission shaft rotatably connected in the bearing seat, and a driven pulley installed on the transmission shaft. The driving pulley and the driven pulley are connected by a transmission belt. A coupling is installed at the output end of the transmission shaft. The coupling passes through the bearing seat. A mating groove matching with the convex block of the main shaft is provided on the coupling.

8. The servo spindle turret according to claim 1, wherein, It further includes a coolant device, and the coolant device includes a plurality of nozzles arranged on the cutter head. Each spindle corresponds to one nozzle, and the nozzle is connected to a water source through a connection assembly.

9. The servo main shaft turret according to claim 8, characterized in that, A plurality of connection holes respectively communicating with the corresponding nozzles are arranged on the cutter head. The connection assembly includes a cylinder. A connection seat is arranged at the output end of the cylinder. A connecting pipe is arranged on the connection seat. A water inlet pipe communicating with the connecting pipe is arranged on the connection seat. The water inlet pipe is externally connected to a water source. The cylinder drives the movement of the connection seat to control the connecting pipe to communicate with or disconnect from the connection hole.

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