High-performance direct-drive special rotary table

Abstract

This invention discloses a high-performance direct-drive turntable, comprising a body, a motor stator, a motor rotor, a spindle, a first end cover, a second end cover, a turntable disposed outside the first end cover and fixed to the end of the spindle, and a cleaning cover with a circular cross-section for wrapping around the first end cover. A central hole is provided at the center of both the turntable and the spindle. A base is provided at the center of the cleaning cover, and a driven shaft is provided on the base with one end rotatably connected to the base and the other end embedded in the central hole. A locking assembly is provided on the driven shaft for locking into the central hole. A connecting arm is provided on the driven shaft, and a brush portion for cleaning the surface of the first end cover and the turntable is provided on the connecting arm. A vacuum hose is provided on one side of the cleaning cover, with one end communicating with the inside of the cleaning cover. A vacuum fan is connected to the side of the vacuum hose away from the cleaning cover, and an air inlet is provided on the side of the cleaning cover away from the vacuum hose.

Description

Technical Field

[0001] This invention belongs to the field of turntable design technology, and specifically relates to a high-performance direct-drive dedicated turntable. Background Technology

[0002] Direct drive motor, short for direct-drive motor. It mainly refers to a motor that drives a load without requiring a transmission device (such as a drive belt). Direct drive motors are suitable for various turntables, and their main advantages include quiet operation, energy saving, smooth operation, and powerful performance.

[0003] Currently, Chinese patent CN114248122, published on March 29, 2022, discloses an ultra-precision air static pressure servo turntable, including a support body, a rotating body, a braking device, and a torque motor. The rotating body is rotatably mounted in the support body, the stator of the torque motor is fixed on the support body, and the rotor of the torque motor is fixed on the rotating body. The rotating body includes a bushing, a lower floating plate disposed at the lower end of the bushing, and an upper floating plate disposed at the upper end of the bushing. The support body is provided with a first compressed gas passage facing the lower end face of the upper floating plate and through which compressed gas flows, and a second compressed gas passage facing the upper end face of the lower floating plate and through which compressed gas flows. The system includes a third compressed gas passage, oriented towards the outer wall of the bushing and through which compressed gas flows; a braking device, used to abut against the rotating body to limit its rotation; a support body including a main body, an upper axial float, a lower axial float, and a radial float; the upper axial float, lower axial float, and radial float are all fixed to the main body; the upper axial float is located below the upper float, the lower axial float is located above the lower float, and the radial float is sleeved on the outside of the bushing; the third compressed gas passage includes a radial compressed gas channel formed by the outer wall of the radial float and the main body and through which compressed gas flows, and a third throttling orifice connected to the radial compressed gas channel and disposed on the radial float.

[0004] The rotor of the torque motor rotates, which drives the rotor mounting shaft, which in turn drives the upper floating plate to rotate, thus completing the operation of the turntable.

[0005] Direct drive rotary tables are frequently used in the rotary machining process of CNC machine tools to complete the machining of complex curved surfaces. Regular cleaning and maintenance are crucial to ensure the normal operation and extend the service life of the rotary table. During cleaning, first disconnect the rotary table from the external power supply and ensure the equipment is stopped. Then, use a soft brush or a clean blower to remove dust and debris, paying particular attention to the surface and internal crevices of the rotary table. For stubborn dirt, a special cleaning agent can be used, but avoid spraying the cleaning agent directly onto electronic components. After cleaning, wait for the equipment to dry completely before reconnecting the power. This entire process is time-consuming and labor-intensive, making it difficult to complete cleaning and maintenance quickly. Summary of the Invention

[0006] The purpose of this invention is to provide a high-performance direct-drive rotary table, which is beneficial for efficiently and quickly completing the cleaning work around the turntable.

[0007] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a high-performance direct-drive dedicated rotary table, comprising a body, a motor stator fixed inside the body, a motor rotor rotatably connected inside the body, a spindle fixed on the motor rotor, a first end cover fixed on one side of the body and through which the end of the spindle passes, a second end cover fixed on the side of the body away from the first end cover, a turntable disposed outside the first end cover and fixed to the end of the spindle, and further comprising a cleaning cover for wrapping around the first end cover and having a circular cross-section, wherein the center of the turntable and the spindle are both provided with a communicating center. The cleaning cover has a base at its center, a driven shaft with one end rotatably connected to the base and the other end embedded in the center hole, a locking assembly for locking in the center hole, a connecting arm, and a brush for cleaning the first end cap and the surface of the turntable. A vacuum hose with one end communicating with the inside of the cleaning cover is provided on one side of the cleaning cover, a vacuum fan is connected to the side of the vacuum hose away from the cleaning cover, and an air inlet is provided on the side of the cleaning cover away from the vacuum hose.

[0008] By adopting the above technical solution, when it is necessary to clean the circumference of the turntable, the cleaning cover is wrapped around the first end cover. The driven shaft on the base is embedded in the central hole of the turntable, and the driven shaft in the central hole is locked by the locking assembly. Then, the turntable and the vacuum fan are started. The motor rotor drives the spindle, and the spindle drives the turntable to rotate. The turntable can then drive the driven shaft to rotate. The rotation of the driven shaft can drive the connecting arm and the brush part to brush around the turntable, thereby cleaning the surface of the turntable through the brush part. At this time, the vacuum fan provides suction through the vacuum hose and enters the external airflow through the air inlet, thereby sucking away the debris cleaned up in the cleaning cover. Finally, it is possible to complete the cleaning work around the turntable efficiently and quickly.

[0009] A further configuration of the present invention is as follows: the locking assembly includes a first through hole opened at the center of the driven shaft, an internal threaded sleeve disposed on the cleaning cover and communicating with the first through hole, a threaded adjusting shaft threadedly connected to the internal threaded sleeve, a locking shaft integrally disposed at the end of the threaded adjusting shaft and inserted into the first through hole, a plurality of third through holes opened around the first through hole and located at the end of the driven shaft away from the base, a locking block located in the third through hole, an inclined portion opened at the end of the locking block near the first through hole and for the end of the locking shaft to abut against, and a locking rubber block disposed at the end of the locking block away from the inclined portion and for abutting against the inner wall of the central hole.

[0010] By adopting the above technical solution, when the cleaning cover is included on the first end cover and the driven shaft end is embedded in the central hole, the locking shaft is moved toward the first through hole by rotating the threaded adjusting shaft. Then the locking shaft can abut against the inclined surface on the locking block, thereby moving the locking block away from the central hole. Finally, the locking rubber block on the locking block can be pressed against the inner wall of the central hole, thereby completing the locking of the driven shaft in the central hole.

[0011] A further embodiment of the present invention is that the locking assembly further includes a connecting groove formed in the third through hole, a protrusion disposed on one side of the locking block and embedded in the connecting groove, and a reset spring having one end connected to the protrusion and the other end connected to the inner wall of the connecting groove.

[0012] By adopting the above technical solution, after the threaded adjusting shaft is rotated in the opposite direction, the locking shaft can move away from the locking block. At this time, under the elastic restoring force of the return spring, the locking rubber block can be removed from the inner wall of the central hole, thereby releasing the locking state of the driven shaft in the central hole, and finally facilitating the disassembly of the cleaning cover.

[0013] A further provision of the present invention is that: a sleeve is provided on the side wall of the cleaning hood for circumferential rotational connection and axial fixed connection of the end of the vacuum hose; a first connecting rod is provided on the outer wall of the machine body, one end of which is omnidirectionally connected to the outer wall of the machine body; and a second connecting rod is also provided on the outer wall of the machine body, one end of which is hinged to the end of the first connecting rod away from the machine body and the other end of which is omnidirectionally connected to the side wall of the cleaning hood.

[0014] By adopting the above technical solution, the end of the vacuum hose is circumferentially rotatably connected and axially fixedly connected to the sleeve. At the same time, one end of the first connecting rod is omnidirectionally connected to the outer wall of the machine body, while one end of the second connecting rod is hinged to the end of the first connecting rod away from the machine body and the other end is omnidirectionally connected to the side wall of the cleaning cover. At this time, the cleaning cover can be easily removed from the first end cover.

[0015] A further feature of the present invention is that: the ends of the first connecting rod and the second connecting rod are both provided with universal balls, and the outer walls of the body and the cleaning cover are both provided with ball seats corresponding to the positions of the universal balls, and the ball seats are provided with spherical grooves with a superior arc shape for the universal balls to be embedded in.

[0016] By adopting the above technical solution, the first link and the second link are embedded in the spherical groove in the ball seat using a universal ball, thereby completing the universal movable connection between the first link and the machine body, and between the second link and the cleaning cover.

[0017] A further feature of the present invention is that an annular groove is formed on the inner wall of the sleeve, and a positioning ring embedded in the annular groove is provided on the periphery of the end of the vacuum hose.

[0018] By adopting the above technical solution, the vacuum hose uses a positioning ring to be embedded in the annular groove on the inner wall of the sleeve. At this time, the positioning ring can rotate circumferentially in the annular groove, and the axial displacement is positioned by the positioning ring. Finally, the end of the vacuum hose can be circumferentially rotated and axially fixedly connected to the sleeve.

[0019] A further feature of the present invention is that the second end cover is provided with a plurality of heat sinks evenly spaced apart.

[0020] By adopting the above technical solution, when the turntable dissipates heat during operation, the multiple evenly spaced heat sinks on the second end cover can increase their contact with the air, which is beneficial for the overall heat dissipation of the turntable, the stable operation of the turntable, and the performance of the turntable.

[0021] A further feature of the present invention is that: the air inlet includes multiple openings corresponding to multiple heat sink positions; a movable sealing plate for sealing the air inlet is provided on the outer wall of the cleaning cover and on one side of the opening; a connecting plate corresponding to the heat sink position and parallel to the heat sink is provided at one end of the movable sealing plate near the body; the connecting plate passes through the opening and abuts against the upper side of the heat sink; a guide post is provided at one end of the connecting plate away from the movable sealing plate; a guide hole is provided on the cleaning cover for the guide post to pass through; a connecting spring is fitted on the guide post, one end of which abuts against the connecting plate and the other end of which abuts against the inner wall of the cleaning cover; an arc-shaped support rod is provided on the first end cover for the multiple connecting plates to abut against; and a locking sleeve is provided at the center of the second end cover for the driven shaft end to be inserted and locked.

[0022] By adopting the above technical solution, when the turntable is not in operation, the cleaning cover is wrapped around the first end cover and the connecting plate abuts against the support rod. At this time, part of the opening is blocked by the movable sealing plate, so the opening is opened to a smaller extent. This helps to reduce the amount of dust entering the cleaning cover through the opening and helps to keep the turntable clean.

[0023] When the cleaning hood is on the first end cover and cleaning the circumference of the turntable, the connecting plate abuts against the support rod. At this time, part of the opening is blocked by the movable sealing plate, so the opening is opened to a smaller extent. The outside airflow enters the cleaning hood through the open opening, thereby reducing the possibility of the cleaned impurities falling out from the opening. Ultimately, this facilitates the efficient absorption of impurities in the cleaning hood.

[0024] When the cleaning cover is not in use and the turntable is in operation, the cleaning cover is wrapped around the second end cover, and the locking sleeve is inserted into the driven shaft end and locked by the locking assembly. At this time, the connecting plate abuts against the heat sink. Under the action of the heat sink, the connecting plate moves away from the second end cover, so that the opening is opened wider and becomes as wide as the heat sink. When the vacuum fan is started, the airflow enters through the opening, passes over the surface of the heat sink, and is then sucked into the vacuum fan. The increased airflow velocity on the surface of the heat sink can quickly remove heat, which is beneficial to the efficient heat dissipation of the heat sink, the overall heat dissipation of the turntable, the stable operation of the turntable, and the improvement of the turntable's performance.

[0025] A further feature of the present invention is that the connecting plate has a positioning groove for the side of the heat sink to be embedded.

[0026] By adopting the above technical solution, the positioning groove on the connecting plate for embedding the heat sink side can play a positioning role, making it convenient for the heat sink to be aligned with the opening position.

[0027] A further feature of the present invention is that the connecting arm is made of elastic rubber material.

[0028] By adopting the above technical solution, since the connecting arm is made of elastic rubber material, the connecting arm will bend after rotating and touching the guide post, thus avoiding the influence of the guide post on the rotation of the connecting arm.

[0029] The beneficial effects of the present invention are as follows: when the turntable is not in working state, the cleaning cover is wrapped around the first end cover, and at the same time, the threaded adjusting shaft is rotated to lock the driven shaft in the center hole by the locking block, and the connecting plate abuts against the support rod. At this time, part of the opening position is blocked by the movable sealing plate, so the opening is opened to a smaller extent, which can ultimately help reduce the amount of dust entering the cleaning cover through the opening and help keep the turntable clean.

[0030] When the cleaning hood is on the first end cover and the circumference of the turntable needs to be cleaned, the driven shaft is locked in the center hole by rotating the threaded adjusting shaft and using the locking block. Then, the turntable and the vacuum fan are started. The motor rotor drives the spindle, and the spindle drives the turntable to rotate. The turntable then drives the driven shaft to rotate. The rotation of the driven shaft drives the connecting arm and the brush to brush around the turntable, thus cleaning the surface of the turntable through the brush. At this time, the vacuum fan provides suction through the vacuum hose and enters the outside airflow through the air inlet, thereby sucking away the debris that has been cleaned up inside the cleaning hood. This facilitates efficient and fast cleaning of the circumference of the turntable. The connecting plate abuts against the support rod. At this time, part of the opening is blocked by the movable sealing plate, so the opening is opened only slightly. The outside airflow enters the cleaning hood through the open opening, thereby reducing the possibility of the cleaned debris scattering out from the opening. This facilitates efficient suction of the debris inside the cleaning hood.

[0031] When the cleaning cover is not in use and the turntable is in operation, the cleaning cover covers the second end cover, and the locking sleeve is inserted into the driven shaft end. Rotating the threaded adjusting shaft uses the locking block to lock the driven shaft in the locking sleeve. At this time, the connecting plate abuts against the heat sink. Under the action of the heat sink, the connecting plate moves away from the second end cover, increasing the opening width to match the width of the heat sink. When the vacuum cleaner is started, the airflow enters through the opening, passes over the surface of the heat sink, and is then sucked into the vacuum cleaner. The increased airflow velocity on the surface of the heat sink quickly removes heat, which is beneficial for efficient heat dissipation of the heat sink, overall heat dissipation of the turntable, stable operation of the turntable, and improved turntable performance. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure when the cleaning cover is omitted in this invention;

[0034] Figure 2 This is a schematic diagram of the structure of the present invention, in which the cleaning cover is wrapped around one side of the first end cap;

[0035] Figure 3 This is a cross-sectional view of the structure of the present invention, in which the cleaning cover is wrapped around one side of the first end cap;

[0036] Figure 4 This is a cross-sectional view of the cleaning cover in this invention;

[0037] Figure 5 This is an enlarged view of the structure of the second end cap in this invention;

[0038] Figure 6 This is a partially exploded view of the connection relationship between the cleaning cover and the movable sealing plate in this invention;

[0039] Figure 7 This is an enlarged view of the connection relationship between the movable sealing plate, the connecting plate, and the guide post in this invention;

[0040] Figure 8 This is a cross-sectional view of the structure of the present invention, in which the cleaning cover is wrapped around one side of the second end cap.

[0041] In the diagram, 1. Body; 11. Motor stator; 12. Motor rotor; 13. Spindle; 14. First end cover; 141. Support rod; 15. Second end cover; 151. Heat sink; 152. Locking sleeve; 16. Turntable; 161. Center hole; 2. Cleaning cover; 21. Base; 22. Driven shaft; 221. Connecting arm; 222. Brush part; 23. Tube sleeve; 231. Annular groove; 24. Air inlet; 241. Opening; 25. Guide hole; 3. Locking assembly; 31. First through hole; 32. 33. Threaded sleeve; 34. Threaded adjusting shaft; 35. Locking shaft; 36. Third through hole; 37. Locking block; 38. Beveled part; 39. Locking rubber block; 301. Connecting groove; 302. Protrusion; 303. Return spring; 4. Vacuum hose; 41. Vacuum fan; 42. Positioning ring; 5. First connecting rod; 51. Second connecting rod; 52. Universal ball; 6. Ball seat; 61. Spherical groove; 7. Movable sealing plate; 71. Connecting plate; 711. Positioning groove; 72. Guide post; 73. Connecting spring. Detailed Implementation

[0042] The technical solutions in the embodiments will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0043] A high-performance direct-drive dedicated rotary table, as referenced Figure 1 , Figure 2 , Figure 3This high-performance direct-drive turntable includes a body 1, a motor stator 11, a motor rotor 12, a spindle 13, a first end cover 14, a second end cover 15, a turntable 16, and a cleaning cover 2. The motor stator 11 is fixed inside the body 1 by bolts, and the motor rotor 12 is rotatably connected to the inside of the motor stator 11. The spindle 13 is fixed to the motor rotor 12 by bolts, and the first end cover 14 is fixed to one side of the body 1 by bolts. The second end cover 15 is fixed to the side of the body 1 away from the first end cover 14 by bolts. The turntable 16 is fixed to the end of the spindle 13 by bolts. When the motor rotor 12 rotates, it can drive the turntable 16 to rotate. A center hole 161 is provided at the center of both the spindle 13 and the turntable 16.

[0044] Reference Figure 2 , Figure 3 , Figure 4 The cleaning cover 2 is used to wrap around the first end cap 14 and has a circular cross-section. A base 21 is bolted to the center of the cleaning cover 2. A driven shaft 22 is mounted on the base 21, with one end rotatably connected to the base 21 via a bearing and the other end embedded in the central hole 161. The driven shaft 22 is equipped with a locking assembly 3 for locking within the central hole 161. This locking assembly 3 includes a first through hole 31, an internal threaded sleeve 32, a threaded adjusting shaft 33, a locking shaft 34, a third through hole 35, a locking block 36, a beveled portion 37, a locking rubber block 38, a connecting groove 301, a protrusion 302, and a return spring 303. The first through hole 31 is located at the center of the driven shaft 22, and the internal threaded sleeve 32 is integrally mounted on the cleaning cover 2 and communicates with the first through hole 31. The threaded adjusting shaft 33 is threadedly connected to the internal threaded sleeve. Inside the 32, the locking shaft 34 is integrally disposed at the end of the threaded adjusting shaft 33 and passes through the first through hole 31. Multiple third through holes 35 are provided and are evenly spaced around the first through hole 31. The third through hole 35 is located at the end of the driven shaft 22 away from the base 21. The locking block 36 is located inside the third through hole 35. At the same time, the inclined part 37 is provided at the end of the locking block 36 near the first through hole 31 and is used for the end of the locking shaft 34 to abut. The locking rubber block 38 is bonded to the end of the locking block 36 away from the inclined part 37 and is used to press against the inner wall of the central hole 161. The connecting groove 301 is provided on the inner wall of the third through hole 35. The protrusion 302 is integrally disposed on one side of the locking buckle and is embedded in the connecting groove 301. At the same time, one end of the return spring 303 is bonded to the protrusion 302 and the other end is bonded to the inner wall of the connecting groove 301.

[0045] Reference Figure 2 , Figure 3 , Figure 4A connecting arm 221 is bonded to the driven shaft 22. The connecting arm 221 is made of elastic rubber material. A brush part 222 for cleaning the surface of the first end cover 14 and the turntable 16 is bonded to the connecting arm 221. A vacuum suction hose 4 with one end communicating with the inside of the cleaning cover 2 is also provided on one side of the cleaning cover 2. At the same time, a vacuum suction fan 41 is connected to the side of the vacuum suction hose 4 away from the cleaning cover 2. A sleeve 23 is integrally provided on the side wall of the cleaning cover 2 for circumferential rotation and axial fixed connection of the end of the vacuum suction hose 4. An annular groove 231 is opened on the inner wall of the sleeve 23. A positioning ring 42 embedded in the annular groove 231 is integrally provided on the circumferential side of the end of the vacuum suction hose 4.

[0046] Reference Figure 2 The outer wall of the body 1 is also provided with a first connecting rod 5, one end of which is omnidirectionally connected to the outer wall of the body 1. The outer wall of the body 1 is also provided with a second connecting rod 51, one end of which is hinged to the end of the first connecting rod 5 away from the body 1 and the other end of which is omnidirectionally connected to the side wall of the cleaning cover 2. The ends of the first connecting rod 5 and the second connecting rod 51 are both welded with universal balls 52. The outer walls of the body 1 and the cleaning cover 2 are both welded with ball seats 6 corresponding to the positions of the universal balls 52. At the same time, the ball seats 6 are provided with spherical grooves 61 for the universal balls 52 to be inserted. The cross-sectional contour of the spherical grooves 61 is arc-shaped.

[0047] Reference Figure 1 , Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 8 The second end cover 15 is also welded with a plurality of evenly spaced heat sinks 151. An air inlet 24 is provided on the side of the cleaning cover 2 away from the suction hose 4. The air inlet 24 includes a plurality of openings 241 corresponding to the positions of the plurality of heat sinks 151. A movable sealing plate 7 for sealing the air inlet 24 is provided on the outer wall of the cleaning cover 2, located on one side of the openings 241. A connecting plate 71 corresponding to the position of the heat sink 151 and parallel to the heat sink 151 is welded to the end of the movable sealing plate 7 near the body 1. The connecting plate 71 passes through the openings 241 and abuts against the upper side of the heat sink 151. The connecting plate 71 also has a... The heat sink 151 has a positioning groove 711 embedded in its side, and a guide post 72 is welded to the end of the connecting plate 71 away from the movable sealing plate 7. At the same time, the cleaning cover 2 has a guide hole 25 for the guide post 72 to pass through, and a connecting spring 73 is also sleeved on the guide post 72. One end of the connecting spring 73 is pressed against the connecting plate 71 and the other end is pressed against the inner wall of the cleaning cover 2. The first end cover 14 also has an arc-shaped support rod 141 for multiple connecting plates 71 to abut against, and the thickness of the support rod 141 is less than the width of the heat sink 151. At the same time, a locking sleeve 152 is welded to the center of the second end cover 15 for the driven shaft 22 to be inserted and locked.

[0048] Principle: When the turntable is not in operation, the cleaning cover 2 is wrapped around the first end cover 14. At the same time, the threaded adjusting shaft 33 is rotated to lock the driven shaft 22 in the center hole 161 using the locking block 36. The connecting plate 71 abuts against the support rod 141. At this time, part of the opening 241 is blocked by the movable sealing plate 7, so the opening 241 is opened to a smaller extent. This helps to reduce the amount of dust entering the cleaning cover 2 through the opening 241, which helps to keep the circumference of the turntable 16 clean.

[0049] When the cleaning cover 2 is on the first end cover 14 and cleaning of the circumference of the turntable 16 is required, the driven shaft 22 is locked in the center hole 161 by rotating the threaded adjusting shaft 33 using the locking block 36. Then, the turntable and the vacuum blower 41 are started. The motor rotor 12 drives the spindle 13, and the spindle 13 drives the turntable 16 to rotate. The turntable 16 then drives the driven shaft 22 to rotate. The rotation of the driven shaft 22 drives the connecting arm 221 and the brush part 222 to brush around the circumference of the turntable 16, thereby cleaning the surface of the circumference of the turntable 16 through the brush part 222. At this time, the vacuum blower 41 vacuums the dust. The hose 4 provides suction and allows external airflow to enter through the air inlet 24, thereby sucking away the debris cleaned from inside the cleaning hood 2. This facilitates efficient and rapid cleaning of the circumference of the turntable 16. The connecting plate 71 abuts against the support rod 141, at which point part of the opening 241 is blocked by the movable sealing plate 7. Therefore, the opening 241 is opened only slightly, and the external airflow enters the cleaning hood 2 through the open opening 241, thereby reducing the possibility of the cleaned impurities scattering out from the opening 241. This ultimately facilitates efficient suction of impurities inside the cleaning hood 2.

[0050] When the cleaning cover 2 is not in use and the turntable is in operation, the cleaning cover 2 covers the second end cover 15 and the locking sleeve 152 is inserted into the end of the driven shaft 22. The threaded adjusting shaft 33 is rotated to lock the driven shaft 22 in the locking sleeve 152 using the locking block 36. At this time, the connecting plate 71 abuts against the heat sink 151. Under the action of the heat sink 151, the connecting plate 71 moves away from the second end cover 15, so that the opening 241 is opened wider and becomes as wide as the heat sink 151. When the vacuum cleaner 41 is started, the airflow enters from the opening 241 and passes through the surface of the heat sink 151 before being sucked into the vacuum cleaner 41. The increased airflow velocity on the surface of the heat sink 151 can quickly remove heat, which is beneficial to the efficient heat dissipation of the heat sink 151, the overall heat dissipation of the turntable, the stable operation of the turntable, and the performance of the turntable.

Claims

1. A high-performance direct-drive turntable, comprising a body (1), a motor stator (11) fixed inside the body (1), a motor rotor (12) rotatably connected inside the body (1), a spindle (13) fixed on the motor rotor (12), a first end cover (14) fixed on one side of the body (1) and through which the end of the spindle (13) passes, a second end cover (15) fixed on the side of the body (1) away from the first end cover (14), and a turntable (16) disposed outside the first end cover (14) and fixed to the end of the spindle (13), characterized in that: It also includes a cleaning cover (2) with a circular cross-section for wrapping around the first end cap (14). The turntable (16) and the spindle (13) are both provided with a central hole (161) that communicates with each other. A base (21) is provided at the center of the cleaning cover (2). A driven shaft (22) is provided on the base (21) with one end rotatably connected to the base (21) and the other end embedded in the central hole (161). A locking assembly is provided on the driven shaft (22) for locking in the central hole (161). The driven shaft (22) is provided with a connecting arm (221), and the connecting arm (221) is provided with a brush part (222) for cleaning the surface of the first end cover (14) and the turntable (16). A vacuum hose (4) is provided on one side of the cleaning cover (2) and one end of the hose is connected to the inside of the cleaning cover (2). A vacuum fan (41) is connected to the side of the vacuum hose (4) away from the cleaning cover (2). An air inlet (24) is provided on the side of the cleaning cover (2) away from the vacuum hose (4).

2. The high-performance direct-drive rotary table according to claim 1, characterized in that: The locking assembly (3) includes a first through hole (31) at the center of the driven shaft (22), an internal threaded sleeve (32) disposed on the cleaning cover (2) and communicating with the first through hole (31), a threaded adjusting shaft (33) threadedly connected to the internal threaded sleeve (32), a locking shaft (34) integrally disposed at the end of the threaded adjusting shaft (33) and inserted into the first through hole (31), a plurality of third through holes (35) disposed around the first through hole (31) and located at the end of the driven shaft (22) away from the base (21), a locking block (36) located in the third through hole (35), a beveled part (37) disposed at the end of the locking block (36) near the first through hole (31) and for the end of the locking shaft (34) to abut against, and a locking rubber block (38) disposed at the end of the locking block (36) away from the beveled part (37) and for abutting against the inner wall of the central hole (161).

3. The high-performance direct-drive rotary table according to claim 2, characterized in that: The locking assembly (3) further includes a connecting groove (301) opened in the third through hole (35), a protrusion (302) disposed on one side of the locking block (36) and embedded in the connecting groove (301), and a reset spring (303) with one end connected to the protrusion (302) and the other end connected to the inner wall of the connecting groove (301).

4. A high-performance direct-drive rotary table according to claim 1, characterized in that: The cleaning cover (2) is provided with a sleeve (23) for circumferentially rotating and axially fixedly connecting the end of the vacuum hose (4). The outer wall of the body (1) is provided with a first connecting rod (5) that is omnidirectionally connected to the outer wall of the body (1). The outer wall of the body (1) is also provided with a second connecting rod (51) that is hinged at one end of the first connecting rod (5) away from the body (1) and omnidirectionally connected to the side wall of the cleaning cover (2).

5. A high-performance direct-drive rotary table according to claim 4, characterized in that: The ends of the first link (5) and the second link (51) are provided with universal balls (52), and the outer walls of the body (1) and the cleaning cover (2) are provided with ball seats (6) corresponding to the positions of the universal balls (52). The ball seats (6) are provided with spherical grooves (61) with a cross-sectional profile of a superior arc for the universal balls (52) to be embedded in.

6. A high-performance direct-drive rotary table according to claim 4, characterized in that: The sleeve (23) has an annular groove (231) on its inner circumferential side, and the end of the vacuum hose (4) is provided with a positioning ring (42) embedded in the annular groove (231).

7. A high-performance direct-drive rotary table according to claim 4, characterized in that: The second end cover (15) is provided with a plurality of heat sinks (151) evenly spaced.

8. A high-performance direct-drive rotary table according to claim 7, characterized in that: The air inlet (24) includes multiple openings (241) corresponding to the positions of multiple heat sinks (151). A movable sealing plate (7) for sealing the air inlet (24) is provided on the outer wall of the cleaning cover (2) and on one side of the openings (241). A connecting plate (71) corresponding to the position of the heat sink (151) and parallel to the heat sink (151) is provided at one end of the movable sealing plate (7) near the body (1). The connecting plate (71) passes through the openings (241) and is used to abut against the upper side of the heat sink (151). A guide post (72) is provided at one end away from the movable sealing plate (7). A guide hole (25) is provided on the cleaning cover (2) for the guide post (72) to pass through. A connecting spring (73) is fitted on the guide post (72), with one end pressed against the connecting plate (71) and the other end pressed against the inner wall of the cleaning cover (2). A support rod (141) in an arc shape is provided on the first end cover (14) for multiple connecting plates (71) to abut against. A locking sleeve (152) is also provided at the center of the second end cover (15) for the driven shaft (22) end to be inserted and locked.

9. A high-performance direct-drive rotary table according to claim 8, characterized in that: The connecting plate (71) has a positioning groove (711) for the side of the heat sink (151) to be embedded.

10. A high-performance direct-drive rotary table according to claim 8, characterized in that: The connecting arm (221) is made of elastic rubber material.

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