Grinding wheel electric main shaft with in-circulation cooling water channel

Abstract

The application discloses a grinding wheel electric main shaft with an in-circuit circulating cooling water channel, relates to the field of motor water cooling, and comprises a shell, a stator and a rotor, the two ends of the rotor are provided with a plurality of rotating parts, the outer wall of the rotating part is fixed on the shell, a water inlet hole and a water outlet hole are arranged at one end of the rotor, a plurality of water cooling cavities which are communicated with the water inlet hole and the water outlet hole are arranged in the rotor along the length direction of the rotor, a sealing ring is arranged on the outer wall of the rotor, the side wall of the sealing ring is abutted on the rotating part, a communication cavity is formed on the side of the sealing ring close to the rotor, and a plurality of guide holes for communicating the water cooling cavities and the communication cavity are arranged on the rotor. The application can better radiate the motor, reduce the temperature of the whole motor, reduce the deviation of the motor, and improve the precision of the motor use.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of motor water cooling, in particular to a grinding wheel electric spindle with internal circulation cooling water channel. BACKGROUND

[0002] The current gear machining process includes forging, normalizing, turning, gear machining, heat treatment, finishing and inspection, etc. The finishing is to polish the surface of the gear by driving the grinding wheel with the motor. During the polishing process, the driving motor needs to work continuously, which generates a large amount of heat.

[0003] In the prior art, a water-cooled motor includes a motor body composed of a shell, a stator and a rotor, a water injection seat is rotatably connected to the motor body, a water inlet cavity is formed in the center of the water cooling seat, an annular water outlet cavity is formed on the side, a plurality of water cooling cavities are formed in the shell along the length direction, the water cooling cavities are arranged in U shape, one end of the water cooling cavity is connected with the water inlet cavity, and the other end is connected with the water outlet cavity. The cold water enters the water cooling cavity from the water inlet cavity and is discharged from the water outlet cavity, so that the heat generated by the positioning and rotation of the rotor can be dissipated, and the deformation of the motor caused by the heat can be reduced.

[0004] In view of the above prior art, the existing water cooling cavity only cools the shell of the motor. In the motor with high precision requirement, bearings are arranged at both ends of the rotor to assist in positioning the rotor. In use, the bearings generate a large amount of heat and need to be cooled. In order to better cool the motor, reduce the temperature of the motor as a whole, reduce the deviation of the motor, and improve the precision of the motor in use, a grinding wheel electric spindle with internal circulation cooling water channel is provided. SUMMARY

[0005] In order to better cool the motor, reduce the temperature of the motor as a whole, reduce the deviation of the motor, and improve the precision of the motor in use, the present application provides a grinding wheel electric spindle with internal circulation cooling water channel.

[0006] The grinding wheel electric spindle with internal circulation cooling water channel provided by the present application adopts the following technical scheme:

[0007] The grinding wheel electric spindle with internal circulation cooling water channel provided by the present application adopts the following technical scheme:

[0008] By adopting the technical scheme, when working, the cold water enters the rotor through the water inlet hole, and the water cooling cavity can cool the rotation to reduce the temperature between the stator and the rotor; and the cold water is injected into the communication cavity through the guide hole, so that the temperature of the sealing ring can be reduced, the temperature of the rotating part can be directly reduced through direct conduction of the temperature of the article, the motor can be better cooled, the overall temperature of the motor can be reduced, the motor can be prevented from deviating, and the precision of the motor in use can be improved.

[0009] Preferably, the end of the shell close to the water inlet hole is fixed with a connecting seat, a drainage cavity communicating with the drainage hole is formed in the side wall of the connecting seat, and a water inlet cavity communicating with the water inlet hole is formed in the center of the connecting seat.

[0010] By adopting the technical scheme, the fixed connecting seat can be more conveniently and stably connected with the water inlet hole and the drainage hole, and the convenience of water inlet and drainage connection is improved.

[0011] Preferably, the water inlet hole comprises an axial water hole, a radial water hole communicating with the water cooling cavity is formed in the inner wall of the axial water hole; the drainage hole comprises a plurality of first water holes formed on the side of the axial water hole, a spacing seat is installed on the rotor, a second water cavity is formed between the spacing seat and the rotor, and a third water hole for connecting the drainage cavity and the second water cavity is formed in the spacing seat.

[0012] Preferably, a limiting clamping groove is formed in the side of the rotor close to the water inlet hole, and the rotating part is clamped and fixed in the limiting clamping groove.

[0013] By adopting the technical scheme, the limiting clamping groove can be more convenient for clamping and fixing the rotating part, improve the firmness of the rotating part, and be formed on the side close to the water inlet hole, so that the radial force received by the shaft is reduced compared with the other side of the shaft, the bearing pressure of the shaft part is reduced, the strength of the shaft part can be met, and the temperature of the motor can be reduced.

[0014] Preferably, a plurality of sealing strips are arranged on the side of the sealing ring close to the rotor, and the plurality of sealing strips are arranged on both sides of the communication cavity.

[0015] By adopting the technical scheme, the sealing strips can better reduce the liquid of the liquid, ensure the waterproofness of the internal environment of the motorized spindle, and improve the stability of the motorized spindle in use.

[0016] Preferably, the sealing ring is arranged between the two rotating members, and positioning rings are arranged on both sides of the sealing ring; positioning grooves are arranged on the sidewalls of the rotating members and are inserted into the positioning rings; and the communication cavity is formed by the two rotating members and the sealing ring.

[0017] By using the above technical scheme, the positioning ring and the positioning groove are matched to lock the two rotating members and the sealing ring, improve the stability of the rotating members and the sealing ring, and cooperate with the open communication cavity to enable the water cooling liquid to directly act on the rotating members, better ensure the cooling effect of the rotating members, reduce the temperature of the motor as a whole, reduce the deviation of the motor, and improve the precision of the motor.

[0018] Preferably, a guide convex ring is arranged on the side of the sealing ring close to the rotor, the guide convex ring is arc-shaped in cross section, and different guide holes connected to the water inlet hole and the water outlet hole are arranged close to the two rotating members, respectively.

[0019] By using the above technical scheme, the height of the connecting cavity can be changed by using the arc-shaped arrangement, the guide hole water inlet and the guide hole water outlet are arranged close to the two rotating members, respectively, the liquid can be better filled in the entire communication cavity, and the contact surface between the water cooling liquid and the communication cavity can be increased, so that the temperature of the sealing ring can be better reduced, and the cooling effect of the rotating member can be improved.

[0020] Preferably, a plurality of transverse holes are arranged in the rotating member along the length direction of the rotating member, a locking ring is arranged on the side of the rotating member away from the sealing ring, and a communication transverse cavity for communicating the plurality of transverse holes is arranged on the side of the locking ring close to the rotating member.

[0021] By using the above technical scheme, when the rotating member is cooled, the water cooling liquid can better act on the rotating member through the transverse hole, and the cooling effect of the rotating member can be improved.

[0022] Preferably, the guide hole is inclined in the radial direction, and the transverse hole is composed of a plurality of groups of circular holes with different inclined directions.

[0023] By using the above technical scheme, when in use, the inclined guide hole can make the water cooling liquid rotate in the communication cavity, so that the liquid can flow into the communication transverse cavity in the transverse hole opposite to the flow direction of the liquid, and then the liquid is discharged by another group, so that the circulation of the water cooling liquid is more convenient.

[0024] Preferably, guide inclined grooves are symmetrically arranged on the side of the guide convex ring close to the rotor, and the guide inclined grooves are inclined in the direction close to the rotating member.

[0025] By adopting the above technical solution, during the rotation of the water-cooled liquid, the guide groove can make the liquid flow closer to the horizontal hole, so that the water-cooled liquid can be injected into the horizontal hole more conveniently. Furthermore, the guide groove can increase the contact area of ​​the water-cooled liquid, better reduce the temperature of the sealing ring, and improve the cooling effect of the rotating parts.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. During operation, the rotation and positioning work together to rotate. Cold water enters the rotor through the water inlet hole, which, together with the water cooling chamber, cools the rotation and reduces the temperature between the stator and rotor. In addition, cold water is injected into the connecting cavity through the guide hole, which can reduce the temperature of the sealing ring. Through the direct conduction of the temperature of the material, the temperature of the rotating parts can be reduced more directly, thereby better dissipating heat from the motor, reducing the overall temperature of the motor, reducing motor misalignment, and improving the accuracy of motor use.

[0028] 2. The addition of a limiting slot facilitates the locking and fixing of rotating parts, improving their stability. Furthermore, having the slot on the side near the water inlet reduces the radial force on the shaft compared to the other side, lowering the load on the shaft and ensuring sufficient strength for its operation. On the other hand, the limiting slot also reduces the rotor's thickness, allowing the low temperature inside the water-cooling pipes to be more easily conducted to the rotating parts, thus better reducing the overall motor temperature, minimizing motor misalignment, and improving the accuracy of motor operation.

[0029] 3. The use of a positioning ring and positioning groove allows the two rotating parts to be locked to the sealing ring, improving the stability of the rotating parts and sealing ring. Combined with the open connecting cavity, the water-cooling liquid can act more directly on the rotating parts, better ensuring the cooling effect of the rotating parts, reducing the overall temperature of the motor, reducing motor misalignment, and improving the accuracy of motor use. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of a grinding wheel electric spindle with an internal circulating cooling water channel according to Embodiment 1 of this application;

[0031] Figure 2 for Figure 1 Enlarged schematic diagram of part B;

[0032] Figure 3 for Figure 1 An enlarged schematic diagram of part A in the middle;

[0033] Figure 4 This is a schematic diagram illustrating the drainage hole structure, as shown in Embodiment 1 of this application.

[0034] Figure 5 for Figure 4 An enlarged schematic diagram of section C;

[0035] Figure 6 This is a schematic diagram illustrating the sealing ring structure, as shown in Embodiment 2 of this application.

[0036] Figure 7 This is a schematic diagram illustrating the transverse hole structure in Embodiment 3 of this application;

[0037] Reference numerals: 1. Outer shell; 2. Stator; 3. Rotor; 4. Connecting seat; 5. Water inlet seat; 6. Water-cooled cavity; 7. Radial water hole; 8. Shaft water hole; 9. Water inlet cavity; 10. Sealing ring; 11. Limiting groove; 12. Rotating component; 13. Connecting cavity; 14. Guide hole; 16. First water hole; 17. Second water cavity; 18. Third water hole; 20. Drainage cavity; 22. Positioning ring; 23. Positioning groove; 24. Horizontal hole; 25. Water inlet hole; 26. Drainage hole; 27. Spacer seat; 28. Sealing strip; 29. ​​Guide protrusion ring; 30. Locking ring; 31. Connecting horizontal cavity; 32. Guide inclined groove. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1 - Figure 7 This application will be described in further detail.

[0039] This application discloses a grinding wheel electric spindle with an internal circulating cooling water channel.

[0040] Example 1

[0041] Reference Figure 1The utility model provides a grinding wheel electric main shaft with in-circulation cooling water channel, including shell 1, stator 2 and rotor 3, both ends of rotor 3 are fixed with two rotators 12, rotator 12 is rotary bearing, and the outer wall of rotator 12 is fixed on shell 1, so that rotor 3 can rotate more smoothly. One end of rotor 3 is provided with water inlet hole 25 and drain hole 26, and drain hole 26 is arranged on the circumferential side of water inlet hole 25. A plurality of water cooling cavities 6 are arranged in rotor 3 along the length direction of rotor 3 and are communicated with water inlet hole and drain hole respectively. The outer wall of rotor 3 is fixed with a sealing ring 10, the sealing ring 10 is installed between the two rotators 12, and the side wall of the sealing ring 10 abuts against the rotator 12, so that the heat can be better transferred. The side of the sealing ring 10 close to the rotor 3 is formed with a communication cavity 13, and a plurality of guide holes 14 for communicating the water cooling cavities 6 and the communication cavity 13 are arranged on the rotor 3, and the guide holes 14 are cylindrical holes arranged along the radial direction of the rotor 3. The rotor 3 rotates with the stator 2, cold water enters the rotor 3 through the water inlet hole 25, and the water cooling cavities 6 can cool the rotor 3, thereby reducing the temperature between the stator 2 and the rotor 3; and the cold water is injected into the communication cavity 13 through the guide hole 14, thereby reducing the temperature of the sealing ring 10, and the temperature of the rotator 12 can be directly reduced through direct conduction of the object temperature, so that the motor can be better cooled, the overall temperature of the motor is reduced, the motor deviation is reduced, and the precision of the motor use is improved.

[0042] The end of the shell 1 close to the water inlet hole 25 is bolted with a connecting seat 4, the connecting seat 4 is bolted with a water inlet seat 5, the connecting seat 4 is provided with a drain cavity 20 communicated with the drain hole 26, and the center of the water inlet seat 5 is provided with a water inlet cavity 9 communicated with the water inlet hole 25. The water inlet hole 25 includes an axial water hole 8, and the inner wall of the axial water hole 8 is provided with a radial water hole 7 communicated with the water cooling cavity 6 along the radial direction; the drain hole 26 includes a plurality of first water holes 16 arranged on the circumferential side of the axial water hole 8, a spacer seat 27 is arranged on the rotor 3, a second water cavity 17 is formed between the spacer seat 27 and the rotor 3, and the spacer seat 27 is provided with a third water hole 18 for communicating the drain cavity 20 and the second water cavity 17. Thus, the liquid can flow out of the rotating rotor 3 more conveniently.

[0043] The side of the rotor 3 close to the drain hole 26 is provided with a limiting clamping groove 11, the limiting clamping groove 11 is coaxially arranged with the rotor 3, and the rotator 12 is clamped and fixed in the limiting clamping groove 11. By arranging the limiting clamping groove 11, on the one hand, the thickness of the rotor 3 can be reduced, the low temperature in the water cooling pipe can be more conveniently conducted to the rotator 12, the overall temperature of the motor can be better reduced, the motor deviation can be reduced, and the precision of the motor use can be improved; on the other hand, the rotator 12 can be more conveniently clamped and fixed, the firmness of the rotator 12 can be improved, and the limiting clamping groove 11 is arranged on the side close to the water inlet hole 25, compared with the other side of the rotating shaft, the radial force received by the rotating shaft is reduced, the bearing pressure of the rotating shaft part is reduced, the strength of the rotating shaft part can be satisfied, and the precision of the motor use can be improved.

[0044] The sealing ring 10 is fixed with a plurality of sealing strips 28 close to one side of the rotor 3, and the sealing strips 28 are fixed on both sides of the communication cavity 13, so that the sealing performance in the electric spindle can be better ensured, and the stability of the electric spindle in use can be improved.

[0045] The implementation principle of the embodiment of the electric spindle with the in-circulation cooling water channel is that, in work, the water cooling liquid flows through the water cooling cavity 6 through the water inlet hole 25 to cool the rotor 3, and then flows into the communication cavity 13 through the guide hole 14 to cool the rotating member 12, so that the temperature of the electric spindle can be reduced, the temperature of the rotating member 12 can be more directly reduced, the motor can be better cooled, the overall temperature of the motor can be reduced, the motor can be prevented from deviating, and the precision of the motor in use can be improved.

[0046] Embodiment 2

[0047] With reference to Figure 6 The difference between the embodiment and the embodiment 1 is that the sealing ring 10 is installed between the two rotating members 12, the sealing ring 10 is integrally formed with the positioning ring 22 on both sides, the positioning groove 23 that is inserted and matched with the positioning ring 22 is formed on the side wall of the rotating member 12, and the communication cavity 13 is formed by the side walls of the two rotating members 12 and the outer wall of the sealing ring 10.

[0048] The sealing ring 10 is fixed with the guide convex ring 29 close to one side of the rotating member, and the guide convex ring 29 is arc-shaped in cross section. The different guide holes 14 connected with the water inlet hole 25 and the water outlet hole 26 are arranged close to the two rotating members 12, respectively.

[0049] The implementation principle of the embodiment 2 is that, in work, the water connected with the guide hole connected with the water inlet hole 25 changes the height of the connecting cavity, and the water cooling liquid can more fully fill the entire communication cavity 13 along the axial direction, so that the contact area between the water cooling liquid and the communication cavity 13 can be increased, the temperature of the sealing ring 10 can be better reduced, and the cooling effect of the rotating member 12 can be improved.

[0050] Embodiment 3

[0051] With reference to Figure 7 The difference between the embodiment and the embodiment 1 is that a plurality of horizontal holes 24 are formed in the rotating member 12 along the length direction, the locking ring 30 is fixed on the side of the rotating member 12 away from the sealing ring 10, the locking ring 30 is annular, the communication horizontal cavity 31 for communicating the plurality of horizontal holes 24 is formed on the side of the locking ring 30 close to the rotating member 12, so that the water cooling liquid can better reduce the temperature of the rotating member 12. The guide hole 14 is obliquely formed along the radial direction, the horizontal hole 24 is composed of a plurality of groups of circular holes with different oblique directions, two groups of the horizontal holes 24 have the same oblique direction as the guide hole 14, and the other two groups of the horizontal holes 24 have the opposite oblique direction as the guide hole 14.

[0052] The guiding inclined groove 32 is symmetrically arranged on one side of the guiding convex ring 29 close to the rotor 3 and is inclined to be arranged along the direction close to the rotating member 12.

[0053] The implementation principle of the embodiment 2 is that: in operation, the inclined guide hole 14 can make the water cooling liquid rotate in the communication cavity 13, so that the liquid can flow into the communication horizontal cavity 31 in the horizontal hole 24 opposite to the liquid flow direction, and then be discharged by another group of liquid, so as to more facilitate the circulation of the water cooling liquid, and the guiding inclined groove 32 can make the liquid flow close to the horizontal hole 24, so that the water cooling liquid can be more conveniently injected into the horizontal hole 24, and the guiding inclined groove 32 can increase the contact area of the water cooling liquid, better reduce the temperature of the sealing ring 10, and improve the cooling effect of the rotating member 12.

[0054] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application, so: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A grinding wheel electric spindle with in-circuit cooling water channel, characterized in that: The utility model provides a water-cooled motor, including shell (1), stator (2) and rotor (3), the rotor (3) both ends are provided with a plurality of rotating parts (12), the rotating part (12) outer wall is fixed on the shell (1), the rotor (3) one end is provided with water inlet hole (25) and drain hole (26), the rotor (3) inside along its length direction is provided with a plurality of water cooling cavity (6) respectively with water inlet hole (25) and water outlet hole is linked together, the rotor (3) outer wall is provided with sealing ring (10), the sealing ring (10) side wall is butt joint on the rotating part (12), the sealing ring (10) is close to the one side of rotor (3) and is formed with the communicating chamber (13), the rotor (3) is provided with a plurality of for the water cooling cavity (6) with the communicating chamber (13) of the guide hole (14) of intercommunication, the sealing ring (10) is arranged between two rotating parts (12), the sealing ring (10) both sides are provided with the locating ring (22), the rotating part (12) side wall is provided with the locating groove (23) of the locating ring (22) plug-in cooperation, the communicating chamber (13) is formed by two rotating parts (12) with the sealing ring (10), the sealing ring (10) is close to the one side of rotor (3) and is provided with guide convex ring (29), the guide convex ring (29) cross section is arc, and the different guide hole (14) of water inlet hole (25) and drain hole (26) connection is close to the opening of two rotating parts (12) respectively, the rotating part (12) along its length direction is provided with a plurality of transverse holes (24), the rotating part (12) is away from the one side of sealing ring (10) and is provided with locking ring (30), the locking ring (30) is close to the one side of rotating part (12) and is provided with the communicating transverse chamber (31) for intercommunication of a plurality of transverse holes (24), the guide hole (14) is inclined and is provided along the radial direction, and the transverse hole (24) is formed by a plurality of groups of inclined direction different round holes, the guide convex ring (29) is close to the one side of rotor (3) and is provided with guide inclined slot (32) symmetrically, and the guide inclined slot (32) is inclined and is provided along the direction close to the rotating part (12).

2. The electrospindle with in-circulation cooling water channel of the grinding wheel according to claim 1, characterized in that: The shell (1) is close to the one end of water inlet hole (25) and is fixed with the connecting seat (4), the connecting seat (4) side wall is provided with the drainage cavity (20) of water outlet hole (26) intercommunication, and the connecting seat (4) center is provided with the water inlet cavity (9) of water inlet hole (25) intercommunication.

3. The electrospindle with an in-circulation cooling water channel of the grinding wheel according to claim 2, characterized in that: The water inlet hole (25) includes the axial water hole (8), and the inner wall of the axial water hole (8) is provided with a radial water hole (7) in communication with the water cooling cavity (6); the drain hole (26) includes a plurality of first water holes (16) provided on the circumferential side of the axial water hole; the rotor (3) is provided with a spacing seat (27); the spacing seat (27) and the rotor (3) are formed with a second water cavity (17); and the spacing seat (27) is provided with a third water hole (18) for intercommunication between the drainage cavity (20) and the second water cavity (17).

4. The electrospindle with in-circulation cooling water channel of the grinding wheel according to claim 1, characterized in that: The rotor (3) is provided with a limiting clamping groove (11) on one side close to the water inlet hole (25), and the rotating part (12) is clamped and fixed in the limiting clamping groove (11).

5. The electrospindle with in-circulation cooling water channel of the grinding wheel according to claim 1, characterized in that: The sealing ring (10) is provided with a plurality of sealing strips (28) on one side close to the rotor (3), and the plurality of sealing strips (28) are arranged on both sides of the communication cavity (13).

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