Oil cooling mechanism of main shaft cooling plate

Abstract

The invention discloses an oil cooling mechanism of a main shaft cooling plate, which comprises a main shaft box, a first motor plate is arranged on the main shaft box, a second motor plate is arranged on the first motor plate, a main shaft motor is arranged on the second motor plate, and a coupler is arranged at the output end of the main shaft motor. The main shaft and the main shaft box have the advantages that the mounting efficiency is improved while the mounting precision is guaranteed, the problem of precision correction during mounting of the main shaft and the main shaft box is solved, and the heat conduction path is lengthened by the two motor plates, so that the heat conduction time is prolonged, the heat transfer is improved, and the oil inlet, the cooling oil groove and the oil outlet are formed in the second motor plate, so that the heat conduction efficiency is improved. The second motor plate has the function of transferring heat generated by the spindle motor, heat conduction is blocked, meanwhile, heat of the spindle motor is further transferred, thermal deformation of the spindle motor and the spindle is avoided, the precision of the machine tool is kept, and the service life of the machine tool is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of motor plate cooling, and in particular to an oil cooling mechanism of a spindle cooling plate. Background Art

[0002] Spindle motor, also called high-speed motor, refers to an AC motor with a speed of more than 10,000 rpm. It is mainly used in wood, aluminum, stone, hardware, glass, PVC and other industries. It has the advantages of fast speed, small size, light weight, low material consumption, low noise and low vibration, and is increasingly valued and applied in related industries.

[0003] In the past, the spindle motor would generate heat when running at high speed. The motor and the spindle are mechanically connected. Due to the thermal conductivity of metal and the inability of the motor plate between the motor and the spindle to transfer the conducted heat, the heat generated by the motor is conducted through the motor plate and transferred to the spindle head, causing thermal deformation of the spindle head or burning of the spindle, thereby affecting the accuracy of the machine tool. In addition, the traditional connection between the spindle motor and the spindle is connected by a single motor plate, which requires multiple accuracy corrections when installing the spindle motor and the spindle. The installation is inconvenient, and the heat conduction of the single motor plate is fast. Therefore, an oil cooling mechanism of the spindle cooling plate is needed to meet people's needs. Summary of the invention

[0004] The purpose of the present invention is to provide an oil cooling mechanism for a spindle cooling plate to solve the problems in the above background technology that the motor plate cannot transfer the heat generated by the spindle motor and the single motor plate is inconvenient to install and the heat conduction is fast.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an oil cooling mechanism of a spindle cooling plate, comprising a spindle box, a first motor plate is installed on the top of the spindle box, a second motor plate is installed on the top of the first motor plate, a spindle motor is installed on the top of the second motor plate, a coupling is installed on the output end of the spindle motor, a spindle is installed on the coupling, and the spindle is rotatably installed in the spindle box, an oil inlet and an oil outlet are opened on the same side of the second motor plate, a cooling oil groove is opened in the second motor plate, and one end of the cooling oil groove is connected to the The oil inlet is communicated with each other, and the other end of the cooling oil groove is communicated with the oil outlet. A first centering hole is provided at the center of the top end of the spindle box, and a first centering ring is provided at the center of the bottom end of the first motor plate. The first centering ring is adapted in the first centering hole. A first sealing groove is provided at the connection between the bottom end of the first motor plate and the first centering ring. A plurality of first threaded holes are provided at the top end of the spindle box, and a plurality of first through holes are provided on the first motor plate. The same first hexagonal bolt is rotatably installed in each of the first through hole and the first threaded hole.

[0006] Preferably, a plurality of countersunk holes are formed on the top of the first motor plate, and each countersunk hole is communicated with each first through hole respectively.

[0007] Preferably, a mounting hole is provided at the center of the bottom end of the first motor plate, a rubber ring is installed in the mounting hole, and the rubber ring is sleeved on the outer wall of the coupling.

[0008] Preferably, a second centering hole is opened at the center of the top end of the first motor plate, the second centering hole is communicated with the mounting hole, and a second centering ring is arranged at the center of the bottom end of the second motor plate, and the second centering ring is adapted in the second centering hole.

[0009] Preferably, a second sealing groove is provided at the connection between the bottom end of the second motor plate and the second centering ring.

[0010] Preferably, a plurality of second threaded holes are formed on the top of the first motor plate, and a plurality of second through holes are formed on the second motor plate, and a same second hexagonal bolt is rotatably installed in each of the second through hole and the second threaded hole.

[0011] Preferably, a cover plate slide groove is opened at the top center of the second motor plate, the cover plate slide groove is communicated with the cooling oil groove, a sealing cover plate is slidably installed in the cover plate slide groove, a first sealing groove is opened on the outer wall of the sealing cover plate, a first sealing ring is arranged in the first sealing groove, a second sealing groove is opened at the bottom end of the cover plate slide groove, and a second sealing ring is arranged in the second sealing groove.

[0012] Preferably, a plurality of third threaded holes are provided on the bottom end of the cover plate slide groove, a plurality of third through holes are provided on the sealing cover plate, and a same conical screw is rotatably installed in each of the third through holes and the third threaded hole.

[0013] Preferably, a plurality of conical countersunk holes are formed on the top of the sealing cover plate, and each conical countersunk hole is respectively communicated with each third through hole.

[0014] Preferably, a plurality of fourth threaded holes are provided on the second motor plate, mounting plates are installed on the outer walls on both sides of the spindle motor, a plurality of fourth through holes are provided on both mounting plates, and the same third hexagonal bolt is rotatably installed in each of the fourth through hole and the fourth threaded hole.

[0015] The beneficial effects of the present invention are:

[0016] The present invention uses the connection method of the first motor plate and the second motor plate at the same time, thereby ensuring the installation accuracy and improving the installation efficiency, solving the problem of precision correction during installation between the spindle and the spindle box, and the two motor plates lengthen the heat conduction path, thereby increasing the heat conduction time, which helps to improve the heat transfer, and through the oil inlet, cooling oil groove and oil outlet opened on the second motor plate, the second motor plate has the function of transferring the heat generated by the spindle motor, blocking the heat conduction and further transferring the heat of the spindle motor itself, solving the thermal deformation of the spindle motor and the spindle, maintaining the accuracy of the machine tool, and increasing the service life of the machine tool.

[0017] In the present invention, by adapting the first centering hole and the first centering ring, the first motor plate is ensured to be concentric with the main shaft when installed on the main shaft box, avoiding the tedious procedures of multiple corrections and installations, and improving the installation efficiency. In addition, by opening the first sealing groove, the first motor plate and the main shaft box are more closely fitted and the horizontality is ensured, which facilitates the subsequent installation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic structural diagram of an oil cooling mechanism of a spindle cooling plate proposed by the present invention;

[0019] Figure 2 A schematic diagram of the cross-sectional structure of a coupling of an oil cooling mechanism of a spindle cooling plate proposed by the present invention;

[0020] Figure 3 This is a schematic diagram of the exploded structure of the connection between the spindle box and the first motor plate of the oil cooling mechanism of the spindle cooling plate proposed by the present invention;

[0021] Figure 4 A schematic cross-sectional structure diagram of the connection between the spindle box and the first motor plate of an oil cooling mechanism of a spindle cooling plate proposed by the present invention;

[0022] Figure 5 A schematic diagram of the exploded structure of the connection between the first motor plate and the second motor plate of the oil cooling mechanism of the spindle cooling plate proposed by the present invention;

[0023] Figure 6 A schematic diagram of a cross-sectional structure of a connection between a first motor plate and a second motor plate of an oil cooling mechanism of a spindle cooling plate proposed by the present invention;

[0024] Figure 7 This is a schematic diagram of the exploded structure of the connection between the second motor plate and the sealing cover plate of the oil cooling mechanism of the spindle cooling plate proposed by the present invention;

[0025] Figure 8 A schematic cross-sectional structure diagram of the connection between the second motor plate and the sealing cover plate of an oil cooling mechanism of a spindle cooling plate proposed by the present invention;

[0026] Fig. 9 A schematic diagram of the exploded structure of the connection between the second motor plate and the spindle motor of the oil cooling mechanism of the spindle cooling plate proposed by the present invention;

[0027] Fig.10 This is a schematic cross-sectional structure diagram of the connection between the second motor plate and the spindle motor of the oil cooling mechanism of the spindle cooling plate proposed by the present invention.

[0028] In the figure: 1, spindle box; 2, first motor plate; 3, second motor plate; 4, spindle motor; 5, spindle; 6, oil inlet; 7, oil outlet; 8, coupling; 9, cooling oil groove; 10, first centering hole; 11, first threaded hole; 12, countersunk hole; 13, first hexagonal bolt; 14, first centering ring; 15, first sealing groove; 16, first through hole; 17, mounting hole; 18, rubber ring; 19, second centering hole; 20, second threaded hole; 21. Second through hole; 22. Second hexagonal bolt; 23. Second centering ring; 24. Second sealing groove; 25. Cover plate slide groove; 26. Sealing cover plate; 27. Third threaded hole; 28. Third through hole; 29. ​​Tapered screw; 30. Tapered countersunk hole; 31. First sealing groove; 32. First sealing ring; 33. Second sealing groove; 34. Second sealing ring; 35. Fourth threaded hole; 36. Mounting plate; 37. Fourth through hole; 38. Third hexagonal bolt. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] Reference Figure 1-10An oil cooling mechanism of a spindle cooling plate comprises a spindle box 1, a first motor plate 2 is installed on the top of the spindle box 1, a second motor plate 3 is installed on the top of the first motor plate 2, a spindle motor 4 is installed on the top of the second motor plate 3, a coupling 8 is installed on the output end of the spindle motor 4, a spindle 5 is installed on the coupling 8, and the spindle 5 is rotatably installed in the spindle box 1, an oil inlet 6 and an oil outlet 7 are opened on the same side of the second motor plate 3, a cooling oil groove 9 is opened in the second motor plate 3, one end of the cooling oil groove 9 is communicated with the oil inlet 6, and the cooling The other end of the oil groove 9 is connected to the oil outlet 7. A first centering hole 10 is provided at the center of the top of the spindle box 1. A first centering ring 14 is provided at the center of the bottom end of the first motor plate 2. The first centering ring 14 is adapted to be in the first centering hole 10. A first sealing groove 15 is provided at the connection between the bottom end of the first motor plate 2 and the first centering ring 14. A plurality of first threaded holes 11 are provided at the top of the spindle box 1. A plurality of first through holes 16 are provided on the first motor plate 2. The same threaded hole 11 is rotatably installed in each of the first through holes 16 and the first threaded hole 11. The first hexagonal bolt 13 is connected by using the first motor plate 2 and the second motor plate 3 at the same time, thereby ensuring the installation accuracy and improving the installation efficiency, solving the problem of precision correction during installation between the spindle 5 and the spindle box 1, and the two motor plates lengthen the heat conduction path, thereby increasing the heat conduction time, which is helpful to improve the heat transfer, and through the oil inlet 6, cooling oil groove 9 and oil outlet 7 opened on the second motor plate 3, the second motor plate 3 has the function of transferring the heat generated by the spindle motor 4, blocking the heat conduction while further transferring the heat of the spindle motor 4 itself, solving the thermal deformation of the spindle motor 4 and the spindle 5 and maintaining the accuracy of the machine tool, thereby increasing the service life of the machine tool, and through the adaptation of the first centering hole 10 and the first centering ring 14, when the first motor plate 2 is installed in the spindle box 1, it is guaranteed to be concentric with the spindle 5, avoiding the cumbersome procedures of multiple correction and installation, and improving the installation efficiency, and through the opening of the first sealing groove 15, the first motor plate 2 and the spindle box 1 are more closely fitted, and the horizontality is guaranteed, which is convenient for the subsequent installation process.

[0031] Reference Figure 3-4 In the present invention, a plurality of countersunk holes 12 are provided on the top of the first motor plate 2, and each countersunk hole 12 is respectively communicated with each first through hole 16. By opening the countersunk holes 12, the nut of the first hexagonal bolt 13 can be completely accommodated in the countersunk hole 12, and when the first hexagonal bolt 13 is tightened, the top end is lower than the opening of the countersunk hole 12, thereby ensuring the fit and levelness of the second motor plate 3 when it is installed on the first motor plate 2.

[0032] Reference Figure 4In the present invention, a mounting hole 17 is opened at the center of the bottom end of the first motor plate 2, and a rubber ring 18 is installed in the mounting hole 17. The rubber ring 18 is sleeved on the outer wall of the coupling 8. Through the setting of the rubber ring 18, the concentricity of the first motor plate 2 installed on the spindle box 1 is further guaranteed, and the rubber ring 18 limits the swing of the coupling 8 when it is loose, thereby ensuring the concentricity of the coupling 8.

[0033] Reference Figure 5-6 In the present invention, a second centering hole 19 is opened at the center of the top end of the first motor plate 2, and the second centering hole 19 is communicated with the mounting hole 17. A second centering ring 23 is arranged at the center of the bottom end of the second motor plate 3, and the second centering ring 23 is adapted in the second centering hole 19. Through the adaptation of the second centering hole 19 and the second centering ring 23, when the first motor plate 2 is concentrically installed on the spindle box 1, the concentricity of the connection between the second motor plate 3 and the first motor plate 2 is guaranteed, thereby achieving the purpose of concentricity between the second motor plate 3 and the spindle 5.

[0034] Reference Figure 6 In the present invention, a second sealing groove 24 is provided at the connection between the bottom end of the second motor plate 3 and the second centering ring 23. By providing the second sealing groove 24, the second motor plate 3 can be installed on the first motor plate 2 with better fit, ensuring the horizontality of the installation, thereby meeting the concentricity requirement.

[0035] Reference Figure 5-6 In the present invention, a plurality of second threaded holes 20 are provided at the top of the first motor plate 2, and a plurality of second through holes 21 are provided on the second motor plate 3. A second hexagonal bolt 22 is rotatably installed in each of the second through holes 21 and the second threaded hole 20. By cooperating with the plurality of second hexagonal bolts 22, the first motor plate 2 and the second motor plate 3 are connected and fit more tightly, and the installation is convenient, avoiding the problem of reduced concentricity due to repeated installation.

[0036] Reference Figure 7-8 In the present invention, a cover plate slot 25 is provided at the top center of the second motor plate 3, the cover plate slot 25 is communicated with the cooling oil groove 9, a sealing cover plate 26 is slidably installed in the cover plate slot 25, a first sealing groove 31 is provided on the outer wall of the sealing cover plate 26, a first sealing ring 32 is provided in the first sealing groove 31, a second sealing groove 33 is provided at the bottom end of the cover plate slot 25, a second sealing ring 34 is provided in the second sealing groove 33, through the cooperation of the first sealing ring 32, the sealing between the inner wall of the cover plate slot 25 and the outer wall of the sealing cover plate 26 is improved, and the cooling oil is prevented from seeping out of the gap, and through the cooperation of the second sealing ring 34, the sealing between the bottom end of the cover plate slot 25 and the bottom end of the sealing cover plate 26 is effectively improved, and the cooling oil is prevented from seeping out of the gap.

[0037] Reference Figure 7-8 In the present invention, a plurality of third threaded holes 27 are provided on the bottom end of the cover plate slide groove 25, and a plurality of third through holes 28 are provided on the sealing cover plate 26. A same conical screw 29 is rotatably installed in each of the third through holes 28 and the third threaded holes 27. Through the cooperation of the plurality of conical screws 29, the sealing cover plate 26 can be more perfectly fitted on the bottom end of the cover plate slide groove 25, thereby ensuring the sealing of the cooling oil groove 9 and effectively preventing the cooling oil from leaking out of the cooling oil groove 9.

[0038] Reference Figure 7-8 In the present invention, a plurality of conical countersunk holes 30 are provided at the top of the sealing cover plate 26, and each conical countersunk hole 30 is respectively communicated with each third through hole 28. Through the cooperation of the conical countersunk holes 30, the nut end of the conical screw 29 can be completely accommodated in the conical countersunk hole 30, thereby ensuring the levelness of the top of the sealing cover plate 26, and further ensuring the levelness of the spindle motor 4 during installation, and ensuring the concentricity of the output shaft of the spindle motor 4 and the spindle 5.

[0039] Reference Figure 9-10 In the present invention, a plurality of fourth threaded holes 35 are provided on the second motor plate 3, and mounting plates 36 are installed on the outer walls of both sides of the spindle motor 4. A plurality of fourth through holes 37 are provided on the two mounting plates 36, and a third hexagonal bolt 38 is rotatably installed in each of the fourth through holes 37 and the fourth threaded holes 35. Through the cooperation of the plurality of third hexagonal bolts 38, the connection between the spindle motor 4 and the second motor plate 3 is ensured, while the fit is better, the installation is more horizontal, and the concentricity of repeated installation is guaranteed.

[0040] Working principle:

[0041] Place the rubber ring 18 in the mounting hole 17 opened on the first motor plate 2, place the first motor plate 2 on the spindle box 1, and through the adaptation of the first centering hole 10 and the first centering ring 14, the first motor plate 2 can be installed concentrically with the spindle box 1, rotate the first motor plate 2 so that the first through hole 16 and the first threaded hole 11 are concentric, install the first hexagonal bolt 13, tighten the nut into the countersunk hole 12, and through the opening of the first sealing groove 15, the fit between the first motor plate 2 and the spindle box 1 is more precise and more horizontal, and the concentricity is guaranteed. Place the second motor plate 3 on the first motor plate 2, and achieve the purpose of self-centering through the adaptation of the second centering hole 19 and the second centering ring 23, rotate the second motor plate 3 so that the second through hole 21 and the second threaded hole 20 are concentric, and install the second hexagonal bolt 2 2. Tighten the nut. Through the opening of the second sealing groove 24, the horizontality during installation is ensured, thereby improving the concentricity requirement. After placing the first sealing ring 32 in the first sealing groove 31 and the second sealing ring 34 in the second sealing groove 33, the sealing cover plate 26 is placed on the cover plate slide groove 25. Rotate the sealing cover plate 26 to ensure that the third threaded hole 27 is concentric with the third through hole 28, press it to the bottom end of the cover plate slide groove 25, install the tapered screw 29, tighten the nut into the tapered countersunk hole 30, install the coupling 8 at the output end of the spindle motor 4 and insert it into the rubber ring 18, rotate the spindle motor 4 to make the fourth threaded hole 35 concentric with the fourth through hole 37, tighten the third hexagonal bolt 38, connect the coupling 8 to the spindle 5, and then connect the oil inlet 6 and the oil outlet 7 to the oil cooler to complete the overall assembly.

[0042] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An oil cooling mechanism for a spindle cooling plate, comprising a spindle box (1), characterized in that: The spindle box (1) is mounted with a first motor plate (2), the first motor plate (2) is mounted with a second motor plate (3), the second motor plate (3) is mounted with a spindle motor (4), a coupling (8) is mounted on the output end of the spindle motor (4), a spindle (5) is mounted on the coupling (8), and the spindle (5) is rotatably mounted in the spindle box (1), an oil inlet (6) and an oil outlet (7) are provided on the same side of the second motor plate (3), a cooling oil groove (9) is provided in the second motor plate (3), one end of the cooling oil groove (9) is communicated with the oil inlet (6), and the other end of the cooling oil groove (9) is connected with the oil outlet (7). The spindle box (1) is connected to the oil outlet (7), the top end of the spindle box (1) is provided with a first centering hole (10), the bottom end of the first motor plate (2) is provided with a first centering ring (14), the first centering ring (14) is adapted in the first centering hole (10), the connection between the bottom end of the first motor plate (2) and the first centering ring (14) is provided with a first sealing groove (15), the top end of the spindle box (1) is provided with a first threaded hole (11), the first motor plate (2) is provided with a first through hole (16), and a first hexagonal bolt (13) is rotatably installed in the first through hole (16) and the first threaded hole (11).

2. The oil cooling mechanism of the spindle cooling plate according to claim 1, characterized in that: The first motor plate (2) is provided with a countersunk hole (12), and the countersunk hole (12) is communicated with the first through hole (16).

3. The oil cooling mechanism of the spindle cooling plate according to claim 1, characterized in that: A mounting hole (17) is provided at the bottom end of the first motor plate (2), a rubber ring (18) is installed in the mounting hole (17), and the rubber ring (18) is sleeved on the outer wall of the coupling (8).

4. The oil cooling mechanism of the spindle cooling plate according to claim 1, characterized in that: A second centering hole (19) is provided at the top end of the first motor plate (2), and the second centering hole (19) is communicated with the mounting hole (17). A second centering ring (23) is provided at the bottom end of the second motor plate (3), and the second centering ring (23) is adapted to fit in the second centering hole (19).

5. The oil cooling mechanism of the spindle cooling plate according to claim 1, characterized in that: A second sealing groove (24) is provided at the connection between the bottom end of the second motor plate (3) and the second centering ring (23).

6. The oil cooling mechanism of the spindle cooling plate according to claim 1, characterized in that: A second threaded hole (20) is provided at the top of the first motor plate (2), a second through hole (21) is provided on the second motor plate (3), and a second hexagonal bolt (22) is rotatably installed in the second through hole (21) and the second threaded hole (20).

7. The oil cooling mechanism of the spindle cooling plate according to claim 1, characterized in that: The second motor plate (3) is provided with a cover plate slide groove (25), the cover plate slide groove (25) is communicated with the cooling oil groove (9), a sealing cover plate (26) is slidably installed in the cover plate slide groove (25), a first sealing groove (31) is provided on the outer wall of the sealing cover plate (26), a first sealing ring (32) is arranged in the first sealing groove (31), a second sealing groove (33) is provided at the bottom end of the cover plate slide groove (25), and a second sealing ring (34) is arranged in the second sealing groove (33).

8. The oil cooling mechanism of the spindle cooling plate according to claim 7, characterized in that: A third threaded hole (27) is provided at the bottom end of the cover plate slide groove (25), a third through hole (28) is provided on the sealing cover plate (26), and a conical screw (29) is rotatably installed in the third through hole (28) and the third threaded hole (27).

9. The oil cooling mechanism of the spindle cooling plate according to claim 7, characterized in that: A conical countersunk hole (30) is provided at the top end of the sealing cover plate (26), and the conical countersunk hole (30) is communicated with the third through hole (28).

10. The oil cooling mechanism of the spindle cooling plate according to claim 1, characterized in that: A fourth threaded hole (35) is provided on the second motor plate (3), a mounting plate (36) is installed on the outer walls of both sides of the spindle motor (4), a fourth through hole (37) is provided on the mounting plate (36), and a third hexagonal bolt (38) is rotatably installed in the fourth through hole (37) and the fourth threaded hole (35).

Images