A turning electric spindle

Abstract

The present invention discloses a turning electric spindle, including a sleeve body, a stator part, and a rotor part. The two ends of the sleeve body are respectively fixedly connected with a front bearing cover and a rear bearing cover. The front bearing cover and the rear bearing cover are penetrated with a through hole for the rotor part to pass through. The end of the rotor part passing through the front bearing cover is a processing end. The processing end is provided with an assembly head for installing a cutter head. The processing end is provided with a protective cover. The edge of the protective cover extends with a driving ring. The front bearing cover is penetrated with an active groove for driving the axial rotation of the rotor part. A change-of-direction transmission assembly is provided between the annular structure of the driving ring passing through the active groove and the rotor part so that the rotation direction of the protective cover is opposite to that of the rotor part. In the turning electric spindle of the present invention, when the rotor part rotates, the protective cover is linked to rotate in the opposite direction, thereby effectively capturing and guiding the chips generated during the turning process, preventing the chips from flying around, and ensuring the safety of the working environment.

Description

Technical Field

[0001] The invention relates to the technical field of electric spindles, in particular to a turning electric spindle. Background Art

[0002] Turning, also known as lathe processing, is a part of mechanical processing, and usually requires the use of an electric spindle. When the turning electric spindle processes the workpiece, it is necessary to install a tool head on the processing end. Turning, milling or grinding the workpiece will generate a large amount of flying chips, which are easily scattered and collide with the operator, affecting the safety of the working environment. Summary of the invention

[0003] The purpose of the present invention is to design a turning electric spindle to solve the deficiencies of the above-mentioned technology. When the rotor rotates, the protective cover rotates in the opposite direction, thereby effectively capturing and guiding the chips generated during the turning process, preventing the chips from flying around, and ensuring the safety of the working environment.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: a turning electric spindle, including a sleeve body, a stator component, and a rotor component, wherein the stator component is fixedly connected in the sleeve body, the rotor component is rotatably inserted in the sleeve body and cooperates with the stator component, and the two ends of the sleeve body are respectively fixedly connected with a front bearing cover and a rear bearing cover, and the front bearing cover and the rear bearing cover are penetrated with a through hole for the rotor component to pass through, the front bearing cover is provided with a front bearing component sleeved on the rotor component, and the rear bearing cover is provided with a rear bearing component sleeved on the rotor component, and the end of the rotor component passing through the front bearing cover is a processing end, and the processing end is provided with an assembly head for installing a cutter head, and the processing end is rotatably sleeved with a protective cover, and a driving ring is extended from the edge of the protective cover, and the front bearing cover is penetrated with an active groove for the drive to rotate circumferentially around the axial direction of the rotor component, and a direction-changing transmission assembly is provided between the annular structure of the driving ring passing through the active groove and the rotor component so that the rotation direction of the protective cover is opposite to the rotation direction of the rotor component.

[0005] Preferably, the direction-changing transmission assembly includes a driving gear, an annular rack segment, and a driven gear arranged between the driving gear and the annular rack segment, the driving gear is sleeved on the rotor member, the annular rack segment is fixedly connected to the inner wall of the annular structure of the driving ring passing through the movable groove and is coaxially arranged with the driving gear, the driven gear is rotatably connected to the inner wall of the front bearing cover, the driving gear is meshed with the driven gear, and the driven gear is meshed with the annular rack segment.

[0006] Preferably, the assembly head comprises a driving sleeve, a plurality of clamping jaws, a push rod, and an elastic member; the end surface of the processing end is provided with a driving groove for inserting each of the clamping jaws; the inner wall of the driving groove is provided with a movable hole for sliding connection of the push rod; the elastic member is arranged between the driving groove and the push rod; the clamping jaws are evenly distributed in a circular array around the axial direction of the push rod; and the driving sleeve is threadedly connected to the outer wall of the processing end;

[0007] When the drive sleeve is screwed close to the processing end, the drive sleeve drives the jaw parts to close inward to form a clamping space for clamping the tool bit. When the drive sleeve is screwed away from the processing end, the push rod drives the jaw parts to extend outward under the action of the elastic member, and the jaw parts spread outward so that the tool bit can be separated from the clamping space.

[0008] Preferably, the end of the push rod is inserted into the clamping space and is provided with an abutment ring, each of the clamping claws abuts against the abutment ring, and both ends of the elastic member abut against the abutment ring and the opposite sides of the driving groove respectively.

[0009] Preferably, the inner wall of the driving groove is formed with a first inner conical surface, and the outer wall of each clamping portion extending into the driving groove is in contact with the first inner conical surface, and the inner wall of the driving sleeve is formed with a second inner conical surface inclined relative to the first inner conical surface, and the outer wall of each clamping portion extending out of the driving groove is in contact with the second inner conical surface.

[0010] Preferably, the driving gear is rotatably connected to the rotor part, and the inner wall of the driving gear is provided with a plurality of uniformly arranged retaining grooves along its circumference, and the inner wall of the movable hole is provided with a travel groove, and the part of the push rod extending into the travel groove is integrally formed with a travel column, and a plug hole passes through the travel groove at a position relative to the driving gear, and a retaining piece is inserted in the plug hole, and the part of the retaining piece extending out of the rotor part is engaged with the corresponding retaining groove, and the outer wall of the travel column is provided with an annular avoidance groove, and the part of the retaining piece inserted into the travel groove is formed with an inclined surface, and the inclined surface is guided and matched with the inner wall of the avoidance groove, and the travel column translates along the length direction of the travel groove to link the retaining piece to extend outward or retract inward relative to the rotor part.

[0011] Preferably, a magnetic ring is embedded in the inner wall of the avoidance groove, the retaining member is made of magnetic material, and the magnetic force between the retaining member and the magnetic ring is suction force.

[0012] Preferably, the protective cover is penetrated by a mounting hole for the processing end to be inserted, a clearance fit is formed between the inner wall of the mounting hole and the outer wall of the processing end, and an auxiliary bearing member sleeved on the processing end is embedded in the inner wall of the mounting hole.

[0013] Preferably, the inner wall of the stator member is provided with a plurality of guide portions distributed in a ring array, and each of the guide portions encloses and forms a guide hole for rotationally connecting the rotor member;

[0014] The outer wall of the stator component is concavely formed with a groove at a position between two adjacent guide parts, and the groove extends axially along the stator component. The inner wall of the sleeve body is convexly formed with a convex strip corresponding to the groove, and the convex strip extends axially along the sleeve body. Each convex strip is respectively inserted into each groove.

[0015] Preferably, the rotor component, the stator component, and the two adjacent guide parts cooperate to form a cooling air duct, the circumferential side wall of the front bearing cover is penetrated by dust-proof ventilation holes, the rear bearing cover is penetrated by first ventilation holes at a position relative to the cooling air duct, the inner wall of the rear bearing cover is provided with a filter screen covering each of the first ventilation holes, the end of the rotor component passing through the rear bearing cover is a driving end, the driving end is provided with a fan blade structure, the rear bearing cover is provided with a cooling cover covering the fan blade structure, and the cooling cover is penetrated by a plurality of second ventilation holes.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention provides a turning electric spindle. When the electric spindle processes a workpiece, a corresponding tool head is installed on an assembly head. The rotor component rotates relative to the stator component to drive the assembly head to rotate, thereby turning the workpiece to be processed. With the cooperation of a direction-changing transmission component, the rotation direction of the protective cover is opposite to the rotation direction of the rotor component. When the rotor component rotates, the protective cover is linked to rotate in the opposite direction, thereby effectively capturing and guiding the chips generated during the turning process, guiding the chips back to the vicinity of the processing end, preventing the chips from flying around, protecting the operator from being harmed by the flying chips, and ensuring the safety of the working environment. In addition, during the turning process, the protective cover rotating in the opposite direction can also guide the cutting fluid to flow to the working area of ​​the tool head, thereby improving the cooling effect, reducing tool head wear, and ensuring the working stability of the electric spindle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a cross-sectional view of the electric spindle in the embodiment Figure 1 ;

[0019] Figure 2 is a cross-sectional view of an assembly head in an embodiment;

[0020] Figure 3 A schematic diagram of the structure of the cooling cover in the embodiment;

[0021] Figure 4 is a cross-sectional view of the electric spindle in the embodiment Figure 2;

[0022] Figure 5 2 is a schematic diagram of the structure of the direction-changing transmission assembly in the embodiment.

[0023] In the figure: 1, sleeve body; 101, convex strip; 2, stator member; 201, guide part; 202, guide hole; 203, groove; 3, rotor member; 301, processing end; 302, driving end; 4, front bearing cover; 401, front bearing member; 402, movable groove; 403, dustproof ventilation hole; 5, rear bearing cover; 501, rear bearing member; 502, first ventilation hole; 6, through hole; 7, driving groove; 701, first inner cone; 8, movable hole; 9, travel groove; 10, jack; 11, assembly head; 111, driving sleeve; 112, clamping claw; 11 3. Push rod; 114. Elastic member; 12. Second inner cone; 13. Abutment ring; 14. Stroke column; 1401. Avoidance groove; 1402. Magnetic ring; 15. Protective cover; 1501. Drive ring; 1502. Mounting hole; 1503. Auxiliary bearing member; 16. Direction-changing transmission assembly; 161. Drive gear; 162. Annular rack segment; 163. Driven gear; 17. Positioning groove; 18. Positioning member; 1801. Inclined surface; 19. Cooling air duct; 20. Clamping space; 21. Fan blade structure; 22. Cooling cover; 2201. Second ventilation hole. DETAILED DESCRIPTION

[0024] The present invention will be further described below by way of embodiments in conjunction with the accompanying drawings.

[0025] refer to Figures 1 to 5 A turning electric spindle comprises a sleeve body 1, a stator part 2 and a rotor part 3. The inner wall of the stator part 2 is provided with a plurality of guide parts 201 distributed in a ring array. The guide parts 201 surround a guide hole 202 for rotationally connecting the rotor part 3. The outer wall of the stator part 2 is concavely formed with a groove 203 at a position between two adjacent guide parts 201. The groove 203 extends axially along the stator part 2. The inner wall of the sleeve body 1 is convexly formed with a convex strip 101 corresponding to the groove 203. The convex strip 101 extends axially along the sleeve body 1. The convex strips 101 are respectively inserted into the grooves 203, so that the stator part 2 is fixedly connected to the sleeve body 1. The rotor part 3 is rotationally inserted into the sleeve body 1 and cooperates with the stator part 2.

[0026] The two ends of the sleeve body 1 are respectively fixedly connected with a front bearing cover 4 and a rear bearing cover 5, and the front bearing cover 4 and the rear bearing cover 5 are penetrated with a through hole 6 for the rotor member 3 to pass through. The front bearing cover 4 is provided with a front bearing member 401 sleeved on the rotor member 3, and the end of the rotor member 3 passing through the front bearing cover 4 is a processing end 301, and the processing end 301 is provided with an assembly head 11 for installing a cutter head, and the assembly head 11 includes a driving sleeve 111, a plurality of clamping claws 112, a push rod 113, and an elastic member 114. The end surface of the processing end 301 is provided with a driving groove 7 for inserting each clamping claw 112, and the inner wall of the driving groove 7 is provided with a movable hole 8 for sliding connection of the push rod 113, and each clamping claw 112 is connected around the push rod 113. The axial direction is evenly distributed in a circular array, the end of the push rod 113 is inserted into the clamping space 20 and is provided with a supporting ring 13, each clamping claw portion 112 is abutted on the supporting ring 13, and the two ends of the elastic member 114 are respectively abutted on the opposite sides of the supporting ring 13 and the driving groove 7, and the inner wall of the driving groove 7 is formed with a first inner conical surface 701, and the outer wall of each clamping claw portion 112 extending into the driving groove 7 is in conflict with the first inner conical surface 701, and the inner wall of the driving sleeve 111 is formed with a second inner conical surface 12 inclined relative to the first inner conical surface 701, and the outer wall of each clamping claw portion 112 extending out of the driving groove 7 is in conflict with the second inner conical surface 12, and the driving sleeve 111 is threadedly connected to the outer wall of the processing end 301.

[0027] When the driving sleeve 111 is screwed close to the processing end 301, the second inner conical surface 12 applies pressure to each clamping claw portion 112 to make it retreat inward. Under the guidance of the first inner conical surface 701, the driving sleeve 111 drives each clamping claw portion 112 to close inward to form a clamping space 20 for clamping the tool head.

[0028] When the driving sleeve 111 is rotated away from the processing end 301 , the push rod 113 drives each clamping claw portion 112 to extend outward under the action of the elastic member 114 . Under the guidance of the first inner cone surface 701 , each clamping claw portion 112 spreads outward so that the tool head can be separated from the clamping space 20 .

[0029] The processing end 301 is rotatably sleeved with a protective cover 15, and the protective cover 15 is penetrated by a mounting hole 1502 for the processing end 301 to be plugged in, and a clearance is formed between the inner wall of the mounting hole 1502 and the outer wall of the processing end 301, and the inner wall of the mounting hole 1502 is embedded with an auxiliary bearing member 1503 sleeved on the processing end 301, so that the rotation of the protective cover 15 relative to the processing end 301 is relatively stable.

[0030] A driving ring 1501 extends from the edge of the protective cover 15, and a movable groove 402 is passed through the front bearing cover 4 for the driving ring 1501 to rotate circumferentially around the axial direction of the rotor part 3. A direction-changing transmission assembly 16 is arranged between the annular structure of the driving ring 1501 passing through the movable groove 402 and the rotor part 3. The direction-changing transmission assembly 16 includes a driving gear 161, an annular rack segment 162, and a driven gear 163 arranged between the driving gear 161 and the annular rack segment 162. The driving gear 161 is sleeved on the rotor part 3, the annular rack segment 162 is fixedly connected to the inner wall of the annular structure of the driving ring 1501 passing through the movable groove 402 and is coaxially arranged with the driving gear 161, the driven gear 163 is rotatably connected to the inner wall of the front bearing cover 4, the driving gear 161 is meshed with the driven gear 163, and the driven gear 163 is meshed with the annular rack segment 162, so that the rotation direction of the protective cover 15 is opposite to the rotation direction of the rotor part 3. Preferably, two driven gears 163 are provided, and the two driven gears 163 are symmetrically arranged with the rotor member 3 as the center.

[0031] When the electric spindle processes a workpiece, a corresponding cutter head is installed on the assembly head 11, and the rotor component 3 rotates relative to the stator component 2 to drive the assembly head 11 to rotate, thereby turning the workpiece to be processed. With the cooperation of the direction-changing transmission assembly 16, the rotation direction of the protective cover 15 is opposite to the rotation direction of the rotor component 3. When the rotor component 3 rotates, the protective cover 15 is linked to rotate in the opposite direction, thereby effectively capturing and guiding the chips generated during the turning process, and guiding the chips back to the vicinity of the processing end 301 to prevent the chips from flying around, protecting the operator from being harmed by the flying chips, and ensuring the safety of the working environment. In the turning process, the operator sprays cutting fluid on the processing end 301 of the electric spindle through an external nozzle, and the reverse rotating protective cover 15 can also guide the cutting fluid to flow to the working area of ​​the cutter head, thereby improving the cooling effect, reducing the wear of the cutter head, and ensuring the working stability of the electric spindle.

[0032] The driving gear 161 is rotatably connected to the rotor member 3. The inner wall of the driving gear 161 is provided with a plurality of evenly spaced positioning grooves 17 along its circumference. The inner wall of the movable hole 8 is provided with a travel groove 9. The portion of the push rod 113 extending into the travel groove 9 is integrally formed with a travel column 14. A plug hole 10 is passed through the travel groove 9 at a position relative to the driving gear 161. A positioning member 18 is inserted into the plug hole 10. The number of the plug holes 10 can be set to be several, and the plurality of plug holes 10 are distributed in a ring array. The outer wall of the travel column 14 is provided with a ring-shaped avoidance groove 1401. The portion of the positioning member 18 inserted into the travel groove 9 is formed with an inclined surface 1801. The inclined surface 1801 cooperates with the inner wall of the avoidance groove 1401. The travel column 14 translates along the length direction of the travel groove 9 and the positioning member 18 is linked to extend outward or retract inward relative to the rotor member 3. Preferably, a magnetic ring 1402 is embedded in the inner wall of the avoidance groove 1401, the retaining member 18 is made of magnetic material, and the magnetic force between the retaining member 18 and the magnetic ring 1402 is suction force.

[0033] When the tool head is installed on the assembly head 11, the operator can unscrew the drive sleeve 111 away from the processing end 301, and the elastic member 114 recovers its deformation to drive the push rod 113 to extend outward and link the clamping claws 112 to spread outward, thereby realizing automatic expansion, so that the tool head can be inserted into the clamping space 20. The travel column 14 moves outward with the push rod 113 to the position corresponding to the avoidance groove 1401 and the positioning member 18. The magnetic ring 1402 absorbs the positioning member 18 and makes it return in the socket 10, thereby releasing the connection between the driving gear 161 and the rotor member 3, so that the protective cover 15 can rotate relative to the processing end 301 without interfering with each other. Afterwards, the operator can put the drive sleeve 111 on the processing end 301 and screw the drive sleeve 111 close to the processing end 301. The second inner cone surface 12 is aligned with each clamping claw 112. The claw portion 112 applies pressure to enable the abutment ring 13 to overcome the inward translation of the elastic member 114. The elastic member 114 shrinks under pressure, and the claw portions 112 close inward to clamp the cutter head so that it is positioned on the processing end 301. The travel column 14 moves inward with the push rod 113 to a position where the avoidance groove 1401 and the retaining member 18 are staggered. Under the guidance of the inclined surface 1801, the retaining member 18 disengages from the inner wall of the avoidance groove 1401 and abuts against the outer wall of the travel column 14, so that the retaining member 18 is pushed up by the travel column 14, and the part of the retaining member 18 extending out of the rotor member 3 is engaged with its corresponding retaining groove 17, completing the connection between the driving gear 161 and the rotor member 3, so that when the driving sleeve 111 drives the processing end 301 to rotate, the protective cover 15 can be linked to rotate in the opposite direction, which is convenient for the operator to confirm that the cutter head is installed in place.

[0034] The rear bearing cover 5 is provided with a rear bearing member 501 sleeved on the rotor member 3. The rotor member 3, the stator member 2, and the two adjacent guide parts 201 cooperate to form a cooling air duct 19. The circumferential side wall of the front bearing cover 4 is penetrated with dustproof ventilation holes 403. The rear bearing cover 5 is penetrated with first ventilation holes 502 at a position relative to the cooling air duct 19. Preferably, the inner wall of the rear bearing cover 5 is provided with a filter screen covering each first ventilation hole 502. The end of the rotor member 3 passing through the rear bearing cover 5 is the driving end 302. The driving end 302 is provided with a fan blade structure 21. The rear bearing cover 5 is provided with A cooling cover 22 is provided for covering the fan blade structure 21, and a plurality of second ventilation holes 2201 are passed through the cooling cover 22. The external air of the electric spindle is connected with the interior of the sleeve body 1 through the second ventilation holes 2201 and the first ventilation holes 502. The fan blade structure 21 rotates with the rotor part 3 to exhaust air from the interior of the sleeve body 1. The heat generated inside the sleeve body 1 is discharged to the outside through the cooling air ducts 19, so as to effectively cool the interior of the electric spindle and prevent dust and other impurities from entering the interior of the electric spindle, thereby making the operation of the electric spindle more stable.

[0035] Of course, the above are only typical examples of the present invention. In addition, the present invention may also have many other specific implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A turning electric spindle, comprising a sleeve body (1), a stator component (2), and a rotor component (3), wherein the stator component (2) is fixedly connected to the sleeve body (1), and the rotor component (3) is rotatably inserted into the sleeve body (1) and cooperates with the stator component (2), characterized in that: The two ends of the sleeve body (1) are respectively fixedly connected with a front bearing cover (4) and a rear bearing cover (5); the front bearing cover (4) and the rear bearing cover (5) are both penetrated with a through hole (6) for the rotor member (3) to pass through; the front bearing cover (4) is provided with a front bearing member (401) sleeved on the rotor member (3); the rear bearing cover (5) is provided with a rear bearing member (501) sleeved on the rotor member (3); the end of the rotor member (3) passing through the front bearing cover (4) is a processing end (301); the processing end (301) is provided with a tool head for mounting. An assembly head (11), the processing end (301) being rotatably sleeved with a protective cover (15), an edge portion of the protective cover (15) being provided with a driving ring (1501), the front bearing cover (4) being penetrated by a movable groove (402) for the driving ring (1501) to rotate circumferentially around the axial direction of the rotor component (3), a direction-changing transmission assembly (16) being provided between an annular structure through which the driving ring (1501) passes through the movable groove (402) and the rotor component (3), so that the rotation direction of the protective cover (15) is opposite to that of the rotor component (3); The direction-changing transmission assembly (16) comprises a driving gear (161), an annular rack segment (162), and a driven gear (163) arranged between the driving gear (161) and the annular rack segment (162); the driving gear (161) is sleeved on the rotor member (3); the annular rack segment (162) is fixedly connected to the inner wall of the annular structure of the driving ring (1501) passing through the movable groove (402) and is coaxially arranged with the driving gear (161); the driven gear (163) is rotatably connected to the inner wall of the front bearing cover (4); the driving gear (161) and the driven gear (163) are meshed with each other, and the driven gear (163) and the annular rack segment (162) are meshed with each other; The assembly head (11) comprises a driving sleeve (111), a plurality of clamping jaws (112), a push rod (113), and an elastic member (114); the end surface of the processing end (301) is provided with a driving groove (7) for the insertion of each of the clamping jaws (112); the inner wall of the driving groove (7) is provided with a movable hole (8) for the sliding connection of the push rod (113); the elastic member (114) is arranged between the driving groove (7) and the push rod (113); the clamping jaws (112) are evenly distributed in a ring array around the axial direction of the push rod (113); and the driving sleeve (111) is threadedly connected to the outer wall of the processing end (301); When the driving sleeve (111) is screwed close to the processing end (301), the driving sleeve (111) drives the clamping claws (112) to close inwardly to form a clamping space (20) for clamping a cutter head; when the driving sleeve (111) is screwed away from the processing end (301), the push rod (113) drives the clamping claws (112) to extend outward under the action of the elastic member (114), and the clamping claws (112) spread outward so that the cutter head can be separated from the clamping space (20); The driving gear (161) is rotatably connected to the rotor member (3); the inner wall of the driving gear (161) is provided with a plurality of evenly spaced retaining grooves (17) along its circumference; the inner wall of the movable hole (8) is provided with a travel groove (9); the portion of the push rod (113) extending into the travel groove (9) is integrally formed with a travel column (14); a plug hole (10) passes through the travel groove (9) at a position relative to the driving gear (161); a retaining member (18) is inserted into the plug hole (10); the retaining member (18) The portion extending out of the rotor member (3) is engaged with the corresponding latching groove (17), the outer wall of the travel column (14) is provided with an annular avoidance groove (1401), the portion of the latching member (18) inserted into the travel groove (9) is formed with an inclined surface (1801), the inclined surface (1801) is guided and matched with the inner wall of the avoidance groove (1401), the travel column (14) is translated along the length direction of the travel groove (9) to link the latching member (18) to extend outward or retract inward relative to the rotor member (3); A magnetic ring (1402) is embedded in the inner wall of the avoidance groove (1401), the retaining member (18) is made of a magnetic material, and the magnetic force between the retaining member (18) and the magnetic ring (1402) is an attractive force.

2. The turning electric spindle according to claim 1, characterized in that: The end of the push rod (113) is inserted into the clamping space (20) and is provided with a support ring (13), each of the clamping claws (112) is in contact with the support ring (13), and both ends of the elastic member (114) are respectively in contact with the support ring (13) and the opposite sides of the driving groove (7).

3. The turning electric spindle according to claim 1, characterized in that: The inner wall of the driving groove (7) is formed with a first inner conical surface (701), and the outer wall of each clamping jaw portion (112) extending into the driving groove (7) is in contact with the first inner conical surface (701). The inner wall of the driving sleeve (111) is formed with a second inner conical surface (12) inclined relative to the first inner conical surface (701), and the outer wall of each clamping jaw portion (112) extending out of the driving groove (7) is in contact with the second inner conical surface (12).

4. The turning electric spindle according to claim 1, characterized in that: The protective cover (15) is penetrated by a mounting hole (1502) for the processing end (301) to be plugged in, and a clearance fit is formed between the inner wall of the mounting hole (1502) and the outer wall of the processing end (301), and an auxiliary bearing member (1503) sleeved on the processing end (301) is embedded in the inner wall of the mounting hole (1502).

5. The turning electric spindle according to claim 1, characterized in that: The inner wall of the stator component (2) is provided with a plurality of guide portions (201) distributed in a ring array, and each of the guide portions (201) is surrounded to form a guide hole (202) for rotationally connecting the rotor component (3); The outer wall of the stator component (2) is formed with a groove (203) inwardly at a position between two adjacent guide portions (201), and the groove (203) extends axially along the stator component (2). The inner wall of the sleeve body (1) is formed with a convex strip (101) corresponding to the groove (203), and the convex strip (101) extends axially along the sleeve body (1), and each convex strip (101) is respectively inserted into each groove (203).

6. The turning electric spindle according to claim 5, characterized in that: The rotor component (3), the stator component (2), and the two adjacent guide parts (201) cooperate to form a cooling air duct (19); the circumferential side wall of the front bearing cover (4) is penetrated with dustproof ventilation holes (403); the rear bearing cover (5) is penetrated with first ventilation holes (502) at a position relative to the cooling air duct (19); the inner wall of the rear bearing cover (5) is provided with a filter screen covering each of the first ventilation holes (502); the end of the rotor component (3) passing through the rear bearing cover (5) is a driving end (302); the driving end (302) is provided with a fan blade structure (21); the rear bearing cover (5) is provided with a cooling cover (22) covering the fan blade structure (21); and the cooling cover (22) is penetrated with a plurality of second ventilation holes (2201).

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