CN216370180U - Mechanical spindle for small lathe - Google Patents
Mechanical spindle for small lathe Download PDFInfo
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- CN216370180U CN216370180U CN202123220796.6U CN202123220796U CN216370180U CN 216370180 U CN216370180 U CN 216370180U CN 202123220796 U CN202123220796 U CN 202123220796U CN 216370180 U CN216370180 U CN 216370180U
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- heat dissipation
- bearing
- cooling heat
- liquid
- main shaft
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Abstract
The utility model discloses a mechanical spindle for a small lathe, which comprises a spindle, wherein a rear supporting part of the spindle is connected with a first bearing, a front supporting part of the spindle is connected with a second bearing, a third bearing is connected on the spindle and positioned between the first bearing and the second bearing, and the outer sides of the first bearing, the second bearing and the third bearing are connected with a heat dissipation external member together; the heat dissipation external member includes air cooling heat dissipation cover and liquid cooling heat dissipation cover of body coupling, and the liquid cooling heat dissipation cover is located the outside of air cooling heat dissipation cover, has seted up a plurality of air passageway along the axial in the air cooling heat dissipation cover, sets up the liquid passage of useful liquid circulation in the liquid cooling heat dissipation cover, and the outside at the main shaft is put to the air cooling heat dissipation cover, has the clearance between the inner wall of air cooling heat dissipation cover and the main shaft outer wall. This product has realized cooling down bearing and main shaft jointly, has promoted the cooling effect greatly.
Description
Technical Field
The utility model relates to a mechanical spindle, in particular to a mechanical spindle for a small lathe.
Background
The mechanical spindle is a shaft on a machine tool for driving a workpiece or a cutter to rotate. It usually comprises a main shaft, a bearing, a transmission member and the like. In machines mainly used for supporting transmission parts such as gears, pulleys, transmitting motion and torque, such as machine tool spindles; some are used to clamp a workpiece, such as a mandrel. However, the mechanical spindle often encounters a high temperature problem in use, especially, the long-time working temperature of the bearing for supporting the spindle is too high and then is transmitted to the spindle, and how to reduce the working temperature of the bearing and the spindle becomes a key for ensuring the good working state of the mechanical spindle.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the technology, the utility model provides a mechanical spindle for a small lathe.
In order to solve the technical problems, the utility model adopts the technical scheme that: a mechanical spindle for a small lathe comprises a spindle, wherein a rear supporting part of the spindle is connected with a first bearing, a front supporting part of the spindle is connected with a second bearing, a third bearing is connected to the spindle and positioned between the first bearing and the second bearing, and the outer sides of the first bearing, the second bearing and the third bearing are connected with a heat dissipation external member together;
the heat dissipation external member includes air cooling heat dissipation cover and liquid cooling heat dissipation cover of body coupling, and the liquid cooling heat dissipation cover is located the outside of air cooling heat dissipation cover, has seted up a plurality of air passageway along the axial in the air cooling heat dissipation cover, sets up the liquid passage of useful liquid circulation in the liquid cooling heat dissipation cover, and the outside at the main shaft is put to the air cooling heat dissipation cover, has the clearance between the inner wall of air cooling heat dissipation cover and the main shaft outer wall.
Further, the liquid channel is an annular channel or a spiral channel, the heat dissipation external member is provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are both communicated with the liquid channel.
Furthermore, the first bearing and the second bearing adopt inner push hole double-row cylindrical roller bearings, inner rings of the inner push hole double-row cylindrical roller bearings are connected with the main shaft, and outer rings of the inner push hole double-row cylindrical roller bearings are connected with the heat dissipation external member.
Furthermore, the third bearing adopts a thrust ball bearing, and the thrust ball bearing comprises a shaft ring, a steel ball retainer assembly and a seat ring.
Further, the main shaft is including connecting preceding axis body and the back axis body as an organic whole, and the diameter of preceding axis body is greater than the diameter of back axis body, and the junction of preceding axis body and back axis body forms annular boss.
Further, thrust ball bearing's ring is connected with cyclic annular boss, has the clearance between the inside wall of seat circle and the outer wall of back axis body, and the lateral wall of seat circle is connected with the heat dissipation external member.
According to the mechanical spindle for the small lathe, the spindle can rotate in the heat dissipation sleeve by arranging the bearing for bearing radial force and axial force on the spindle, the air-cooling heat dissipation sleeve of the heat dissipation sleeve is wrapped on the periphery of the spindle and transmits heat from the spindle to the liquid-cooling heat dissipation sleeve, the liquid-cooling heat dissipation sleeve is sleeved on the peripheries of the spindle and all bearings, and the heat from the spindle and all bearings is taken away by inputting cooling liquid to an external liquid inlet for circulation and circulating out from a liquid outlet, so that the bearings and the spindle are cooled together, and the cooling effect is greatly improved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural view of a circled portion in fig. 1.
Fig. 3 is a schematic overall structure diagram of a second embodiment of the present invention.
In the figure: 1. a main shaft; 2. a first bearing; 3. a third bearing; 4. air cooling the heat dissipation sleeve; 5. liquid cooling heat dissipation sleeve; 6. a liquid channel; 7. a liquid inlet; 8. a liquid outlet; 9. a second bearing; 10. an air passage; 101. a front axle body; 102. a rear axle body; 103. an annular boss; 301. a shaft ring; 302. a steel ball retainer assembly; 303. a race.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The mechanical spindle for the small lathe shown in fig. 1 and 2 comprises a spindle 1, a first bearing 2 is connected to a rear supporting part of the spindle 1, a second bearing 9 is connected to a front supporting part of the spindle 1, the first bearing 2 and the second bearing 9 are inner push hole double-row cylindrical roller bearings and are used for bearing radial force of the spindle to play a role of radial supporting, a third bearing 3 is connected to the spindle 1 and located between the first bearing 2 and the second bearing 9, the third bearing 3 is a thrust ball bearing and is used for bearing axial force of the spindle to play a role of axial supporting, and the thrust ball bearing comprises a shaft ring 301, a steel ball retainer assembly 302 and a seat ring 303.
The outer sides of the first bearing 2, the second bearing 9 and the third bearing 3 are connected with a heat dissipation external member together; the concrete connection mode is as follows: the inner ring of the push hole double-row cylindrical roller bearing is connected with the main shaft 1, and the outer ring of the push hole double-row cylindrical roller bearing is connected with the heat dissipation external member. The main shaft 1 comprises a front shaft body 101 and a rear shaft body 102 which are connected into a whole, the diameter of the front shaft body 101 is larger than that of the rear shaft body 102, and an annular boss 103 is formed at the joint of the front shaft body 101 and the rear shaft body 102. A shaft ring 301 of the thrust ball bearing is connected with the annular boss 103, a gap is reserved between the inner side wall of the seat ring 303 and the outer wall of the rear shaft body 102, and the outer side wall of the seat ring 303 is connected with a heat dissipation sleeve.
In the first embodiment, the first step is,
as shown in fig. 1, the heat dissipation external member includes air cooling heat dissipation cover 4 and liquid cooling heat dissipation cover 5 of body coupling, liquid cooling heat dissipation cover 5 is located the outside of air cooling heat dissipation cover 4, a plurality of air passage 10 has been seted up along the axial in the air cooling heat dissipation cover 4, air passage 10 is the annular arrangement, air can be with higher speed the heat that the transmission comes from the main shaft in the air passage 10, liquid passage 6 with liquid circulation has been seted up in the liquid cooling heat dissipation cover 5, 4 covers of air cooling heat dissipation cover are put in the outside of main shaft 1, the clearance has between the inner wall of air cooling heat dissipation cover 4 and the main shaft 1 outer wall.
The liquid channel 6 is annular channel in shape, has seted up inlet 7 and liquid outlet 8 on the heat dissipation external member, and inlet 7 and liquid outlet 8 all are linked together with liquid channel 6, during the use, pass through inlet 7.
In the second embodiment, the first embodiment of the method,
as shown in fig. 3, the heat dissipation external member includes air cooling heat dissipation cover 4 and liquid cooling heat dissipation cover 5 of body coupling, liquid cooling heat dissipation cover 5 is located the outside of air cooling heat dissipation cover 4, a plurality of air passage 10 has been seted up along the axial in the air cooling heat dissipation cover 4, air cooling heat dissipation cover 4 is located between No. 2 bearings and No. 3 bearings, the heat that the air transfer came from the main shaft has been in the air passage 10, liquid passage 6 that is used for the coolant liquid circulation has been seted up in the liquid cooling heat dissipation cover 5, 4 covers of air cooling heat dissipation cover and puts the outside at main shaft 1, the clearance has between the inner wall of air cooling heat dissipation cover 4 and the 1 outer wall of main shaft.
In order to increase the heat exchange area of the cooling liquid in the liquid channel 6, the shape of the liquid channel 6 is set to be a spiral channel, a liquid inlet 7 and a liquid outlet 8 are formed in the heat dissipation external member, and the liquid inlet 7 and the liquid outlet 8 are both communicated with the liquid channel 6.
When the cooling device is used, the main shaft can rotate in the cooling sleeve by arranging the bearing which bears the radial force and the axial force on the main shaft, the air-cooling sleeve of the cooling sleeve is wrapped on the periphery of the main shaft and transmits heat from the main shaft to the liquid-cooling sleeve, the liquid-cooling sleeve is sleeved on the peripheries of the main shaft and all bearings, and the heat from the main shaft and all bearings is taken away by inputting cooling liquid to circulate through the external liquid inlet and circulating out from the liquid outlet, so that the bearing and the main shaft are cooled together, and the cooling effect is greatly improved.
The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make variations, modifications, additions or substitutions within the technical scope of the present invention.
Claims (6)
1. A mechanical main shaft for a small lathe is characterized in that: the cooling device comprises a main shaft (1), wherein a first bearing (2) is connected to a rear supporting part of the main shaft (1), a second bearing (9) is connected to a front supporting part of the main shaft (1), a third bearing (3) is connected to the main shaft (1) and is positioned between the first bearing (2) and the second bearing (9), and the outer sides of the first bearing (2), the second bearing (9) and the third bearing (3) are jointly connected with a cooling sleeve;
the heat dissipation external member includes air cooling heat dissipation cover (4) and liquid cooling heat dissipation cover (5) of body coupling, and liquid cooling heat dissipation cover (5) are located the outside of air cooling heat dissipation cover (4), have seted up a plurality of air passage (10) along the axial in air cooling heat dissipation cover (4), offer liquid passage (6) with liquid circulation in liquid cooling heat dissipation cover (5), and the outside at main shaft (1) is put to air cooling heat dissipation cover (4) cover, has the clearance between the inner wall of air cooling heat dissipation cover (4) and main shaft (1) outer wall.
2. The mechanical spindle for a small lathe according to claim 1, wherein: liquid channel (6) shape is ring channel or helical channel, heat dissipation external member is last to have seted up inlet (7) and liquid outlet (8), and inlet (7) and liquid outlet (8) all are linked together with liquid channel (6).
3. The mechanical spindle for a small lathe according to claim 2, wherein: the first bearing (2) and the second bearing (9) adopt inner push hole double-row cylindrical roller bearings, inner rings of the inner push hole double-row cylindrical roller bearings are connected with the main shaft (1), and outer rings of the inner push hole double-row cylindrical roller bearings are connected with the heat dissipation external member.
4. The mechanical spindle for a small lathe according to claim 3, wherein: and the third bearing (3) adopts a thrust ball bearing, and the thrust ball bearing comprises a shaft ring (301), a steel ball retainer assembly (302) and a seat ring (303).
5. The mechanical spindle for a small lathe according to claim 4, wherein: the main shaft (1) comprises a front shaft body (101) and a rear shaft body (102) which are connected into a whole, the diameter of the front shaft body (101) is larger than that of the rear shaft body (102), and an annular boss (103) is formed at the joint of the front shaft body (101) and the rear shaft body (102).
6. The mechanical spindle for a small lathe according to claim 5, wherein: a shaft ring (301) of the thrust ball bearing is connected with an annular boss (103), a gap is reserved between the inner side wall of the seat ring (303) and the outer wall of the rear shaft body (102), and the outer side wall of the seat ring (303) is connected with a heat dissipation sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123220796.6U CN216370180U (en) | 2021-12-21 | 2021-12-21 | Mechanical spindle for small lathe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123220796.6U CN216370180U (en) | 2021-12-21 | 2021-12-21 | Mechanical spindle for small lathe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216370180U true CN216370180U (en) | 2022-04-26 |
Family
ID=81236504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123220796.6U Active CN216370180U (en) | 2021-12-21 | 2021-12-21 | Mechanical spindle for small lathe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216370180U (en) |
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2021
- 2021-12-21 CN CN202123220796.6U patent/CN216370180U/en active Active
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