CN220515430U - Double-speed electric spindle - Google Patents
Double-speed electric spindle Download PDFInfo
- Publication number
- CN220515430U CN220515430U CN202322146028.3U CN202322146028U CN220515430U CN 220515430 U CN220515430 U CN 220515430U CN 202322146028 U CN202322146028 U CN 202322146028U CN 220515430 U CN220515430 U CN 220515430U
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- China
- Prior art keywords
- spindle
- box body
- radiating
- periphery
- ventilating box
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- 238000001816 cooling Methods 0.000 claims abstract description 39
- 230000017525 heat dissipation Effects 0.000 claims description 28
- 239000000919 ceramic Substances 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 7
- 238000009423 ventilation Methods 0.000 description 19
- 230000000694 effects Effects 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Auxiliary Devices For Machine Tools (AREA)
- Motor Or Generator Cooling System (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The utility model belongs to the technical field of electric spindles, and particularly relates to a double-speed electric spindle, which comprises a ventilating box body, wherein a spindle is arranged in the ventilating box body, a rotor is arranged at the periphery of the spindle, a stator is arranged at the periphery of the rotor, a first radiating channel is formed between the stator and the ventilating box body, a plurality of first air inlets and first air outlets are respectively formed at two ends of the ventilating box body, a radiating shell is arranged at the periphery of the stator, a plurality of first radiating strips are formed at the periphery of the radiating shell, an air cooling blade is arranged at one periphery of the spindle, the other end of the spindle extends out of the ventilating box body, and a radiating bearing is arranged at the periphery of two ends of the spindle.
Description
Technical Field
The utility model relates to the technical field of motorized spindles, in particular to a double-speed motorized spindle.
Background
Motorized spindles are new technologies that integrate machine tool spindles with spindle motors that have emerged in the field of numerically controlled machine tools in recent years. The main transmission system of the high-speed numerical control machine tool cancels belt wheel transmission and gear transmission. The main shaft of the machine tool is directly driven by an internal motor, so that the length of a main transmission chain of the machine tool is shortened to zero, and zero transmission of the machine tool is realized. The transmission structure of the spindle motor and the machine tool spindle is that the spindle component is relatively independent from the transmission system and the whole structure of the machine tool, so the spindle motor can be made into a spindle unit commonly called an electric spindle.
The structure of the motorized spindle generally comprises a shell-free motor, a spindle, a bearing, a spindle unit shell, a driving module, a cooling device and the like. The rotor of the motor is integrated with the main shaft by a press fit method, and the main shaft is supported by front and rear bearings. The stator of the motor is mounted in the housing of the spindle unit by means of a cooling jacket. The speed change of the spindle is controlled by the spindle drive module, while the temperature rise in the spindle unit is limited by the cooling device. The rear end of the main shaft is provided with a speed measuring and angular displacement measuring sensor, and the inner taper hole and the end face of the front end are used for installing a cutter. Because the electric spindle integrates the motor into the spindle unit, and the rotating speed is very high, a large amount of heat can be generated during operation, so that the temperature rise of the electric spindle is caused, the thermal state characteristic and the dynamic characteristic of the electric spindle are deteriorated, and the normal operation of the electric spindle is affected. Therefore, measures must be taken to control the temperature of the motorized spindle so that it is constant within a certain value.
Disclosure of Invention
The utility model aims to provide a double-speed electric spindle which solves the problem of poor heat dissipation effect through a heat dissipation channel.
The purpose of the utility model is realized in the following way: the double-speed electric spindle comprises a ventilating box body, wherein a spindle is installed in the ventilating box body, a rotor is installed on the periphery of the spindle, a stator is arranged on the periphery of the rotor, a first radiating channel is formed between the stator and the ventilating box body, a plurality of first air inlets and first air outlets are formed in the two ends of the ventilating box body respectively, a radiating shell is installed on the periphery of the stator, a plurality of first radiating strips are formed in the periphery of the radiating shell, an air cooling blade is installed on the periphery of one end of the spindle, the other end of the spindle extends out of the ventilating box body, end covers are installed between the two ends of the spindle and the ventilating box body respectively, and a radiating bearing is installed on the periphery of the two ends of the spindle and located between the spindle and the end covers.
Preferably, the ventilation box body is embedded with the cooling tube, and the cooling tube evenly sets up in the ventilation box body, and the one end of cooling tube stretches out the ventilation box body and is provided with the feed liquor and connects, and the other end of cooling tube stretches out the ventilation box body and is provided with out liquid joint.
Preferably, a filter is arranged at one position of the air inlet.
Preferably, the heat dissipation bearing comprises an outer ring, an inner ring and ceramic balls, wherein the ceramic balls are provided with a plurality of air inlets and are uniformly distributed between the outer ring and the inner ring, a retainer is arranged between the adjacent ceramic balls, an annular cooling cavity is formed in the inner ring, a plurality of second heat dissipation strips are arranged in the annular cooling cavity, the second heat dissipation strips are located on one side close to the ceramic balls, protrusions are arranged on the front side and the back side of the inner ring, a plurality of air inlets are uniformly formed in the surface of one side of each protrusion, the direction of the air inlet ends of the air inlets is opposite to the rotation direction of the bearing, a plurality of air outlets are uniformly formed in the surface of the other side of each protrusion, and the direction of the air outlets is identical to the rotation direction of the bearing.
Preferably, one end of the inner side of the air inlet hole is communicated with the inner part of the annular cooling cavity; one end of the inner side of the air outlet hole is communicated with the inside of the annular cooling cavity.
Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:
in the actual working process, the main shaft drives the air cooling blades to rotate, so that external cold air is sucked from the air inlet hole I, passes through the heat dissipation channel I, drives heat generated by the operation of the electric main shaft, and is discharged from the air outlet hole I, thereby realizing air cooling, having good heat dissipation effect, improving the heat dissipation effect at the two ends of the main shaft by virtue of the design of the heat dissipation bearing, and preventing the bearing from overheating to influence the normal work of the electric main shaft.
Drawings
Fig. 1 is a schematic cross-sectional view of the present utility model.
Fig. 2 is a schematic structural view of a radiating pipe.
Fig. 3 is a schematic cross-sectional structure of a heat dissipating bearing.
Fig. 4 is a schematic diagram of a front structure of the heat dissipating bearing.
Fig. 5 is a schematic diagram of the reverse structure of the heat dissipating bearing.
Reference numerals: 1-a ventilation box body; 2-a main shaft; 3-rotor; 4-stator; 5-a first heat dissipation channel; 6-an air inlet hole I; 7-an air outlet hole I; 8-a heat dissipation shell; 9-a first heat dissipation strip; 10-air cooling blades; 11-end caps; 12-a heat dissipation bearing; 13-radiating pipes; 14-a liquid inlet joint; 15-a liquid outlet joint; 16-an outer ring; 17-inner ring; 18-ceramic balls; 19-a holder; 20-an annular cooling chamber; 21-a second heat dissipation strip; 22-bump;
23-an air inlet hole; 24-air outlet holes.
Detailed Description
The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings.
As shown in fig. 1-5, the double-speed electric spindle 2 comprises a ventilation box body 1, a spindle 2 is installed in the ventilation box body 1, a rotor 3 is installed on the periphery of the spindle 2, a stator 4 is arranged on the periphery of the rotor 3, a first radiating channel 5 is formed between the stator 4 and the ventilation box body 1, a plurality of first air inlets 6 and first air outlets 7 are respectively formed at two ends of the ventilation box body 1, a radiating shell 8 is installed on the periphery of the stator 4, a plurality of first radiating strips 9 are formed on the periphery of the radiating shell 8, an air cooling blade 10 is installed on the periphery of one end of the spindle 2, the other end of the spindle 2 extends out of the ventilation box body 1, an end cover 11 is respectively installed between two ends of the spindle 2 and the ventilation box body 1, a radiating bearing 12 is installed on the periphery of two ends of the spindle 2, and the radiating bearing 12 is located between the spindle 2 and the end cover 11.
In the actual working process, the main shaft 2 drives the air cooling blades 10 to rotate, so that external cold air is sucked from the air inlet hole I6, passes through the heat dissipation channel I5, takes away heat generated by the working of the electric main shaft, and is discharged from the air outlet hole I7, thereby realizing air cooling, having good heat dissipation effect, improving the heat dissipation effect of the two ends of the main shaft 2 and preventing the bearing from overheating to influence the normal working of the electric main shaft through the design of the heat dissipation bearing 12.
In combination with fig. 1 and 2, the ventilation box 1 is embedded to be equipped with cooling tube 13, and cooling tube 13 evenly sets up in ventilation box 1, and ventilation box 1 is provided with feed liquor joint 14 to the one end of cooling tube 13, and ventilation box 1 is provided with out liquid joint 15 to the other end of cooling tube 13, and this technical scheme passes through the design of cooling tube 13 for can let in ventilation box 1 with the coolant liquid through feed liquor joint 14, thereby cool down ventilation box 1, further improve the radiating effect, make the temperature of electric main shaft keep in normal working range.
The first air inlet hole 6 is provided with a filter, so that foreign matters, dust and the like outside can be prevented from entering the ventilation box body 1.
The heat dissipation bearing 12 comprises an outer ring 16, an inner ring 17 and ceramic balls 18, wherein the ceramic balls 18 are provided with a plurality of air inlets 23 which are uniformly distributed between the outer ring 16 and the inner ring 17, a retainer 19 is arranged between adjacent ceramic balls 18, an annular cooling cavity 20 is formed in the inner ring 17, a plurality of second heat dissipation strips 21 are arranged in the annular cooling cavity 20, the second heat dissipation strips 21 are positioned on one side close to the ceramic balls 18, therefore, heat generated by the ceramic balls 18 in the rotation process is conducted to the second heat dissipation strips 21, protrusions 22 are arranged on the front surface and the back surface of the inner ring 17, a plurality of air inlets 23 are uniformly formed on one side surface of each protrusion 22, the direction of the air inlet ends of the air inlets 23 is opposite to the rotation direction of the bearing, a plurality of air outlets 24 are uniformly formed on the other side surface of each protrusion 22, and the direction of the air outlet ends of the air outlets 24 is identical to the rotation direction of the bearing.
One end of the inner side of the air inlet hole 23 is communicated with the inside of the annular cooling cavity 20; one end of the inner side of the air outlet hole 24 is communicated with the inside of the annular cooling cavity 20.
In practical application, in the rotation process, the air inlet ends of the air inlet holes 23 on the front face can fully guide in external cooling air to the inside of the annular cooling cavity 20 due to the opposite rotation direction, and then the second heat dissipation strip 21 is subjected to rapid cooling, so that the heat dissipation effect of the heat dissipation bearing 12 is improved, the air outlet ends of the air outlet holes 24 on the other end can rapidly extract air in the annular cooling cavity 20 due to the opposite rotation direction and the influence of pressure difference, the rapid ventilation effect is achieved, and the cooling effect is better.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (5)
1. The double-speed electric spindle is characterized by comprising a ventilating box body (1), wherein a spindle (2) is arranged in the ventilating box body (1), a rotor (3) is arranged on the periphery of the spindle (2), a stator (4) is arranged on the periphery of the rotor (3), a first radiating channel (5) is formed between the stator (4) and the ventilating box body (1), a plurality of first air inlet holes (6) and first air outlet holes (7) are respectively formed in the two ends of the ventilating box body (1), a radiating shell (8) is arranged on the periphery of the stator (4), a plurality of first radiating strips (9) are formed on the periphery of the radiating shell (8), air cooling blades (10) are arranged on the periphery of one end of the spindle (2), the other end of the spindle (2) extends out of the ventilating box body (1), end covers (11) are respectively arranged between the two ends of the spindle (2) and the ventilating box body (1), radiating bearings (12) are arranged on the periphery of the two ends of the spindle (2), and the radiating bearings (12) are arranged between the spindle (2) and the end covers (11).
2. The two-speed motorized spindle of claim 1, wherein: the novel ventilating box is characterized in that radiating pipes (13) are embedded in the ventilating box body (1), the radiating pipes (13) are evenly arranged in the ventilating box body (1), one ends of the radiating pipes (13) extend out of the ventilating box body (1) and are provided with liquid inlet connectors (14), and the other ends of the radiating pipes (13) extend out of the ventilating box body (1) and are provided with liquid outlet connectors (15).
3. The two-speed motorized spindle of claim 1, wherein: a filter is arranged at the first air inlet (6).
4. The two-speed motorized spindle of claim 1, wherein: the heat dissipation bearing (12) comprises an outer ring (16), an inner ring (17) and ceramic balls (18), wherein the ceramic balls (18) are provided with a plurality of air inlets (23) which are uniformly distributed between the outer ring (16) and the inner ring (17), a retainer (19) is arranged between the adjacent ceramic balls (18), an annular cooling cavity (20) is formed in the inner ring (17), a plurality of heat dissipation strips (21) are arranged in the annular cooling cavity (20), the heat dissipation strips (21) are located on one side close to the ceramic balls (18), protrusions (22) are respectively arranged on the front side and the back side of the inner ring (17), the directions of air inlets (23) are opposite to the rotation direction of the bearing, a plurality of air outlets (24) are uniformly formed in the other side surface of the protrusions (22), and the directions of the air outlets (24) are identical to the rotation direction of the bearing.
5. The two-speed motorized spindle of claim 4, wherein: one end of the inner side of the air inlet hole (23) is communicated with the inside of the annular cooling cavity (20); one end of the inner side of the air outlet hole (24) is communicated with the inside of the annular cooling cavity (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322146028.3U CN220515430U (en) | 2023-08-09 | 2023-08-09 | Double-speed electric spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322146028.3U CN220515430U (en) | 2023-08-09 | 2023-08-09 | Double-speed electric spindle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220515430U true CN220515430U (en) | 2024-02-23 |
Family
ID=89927354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322146028.3U Active CN220515430U (en) | 2023-08-09 | 2023-08-09 | Double-speed electric spindle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220515430U (en) |
-
2023
- 2023-08-09 CN CN202322146028.3U patent/CN220515430U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |