CN210739147U - Oil-gas lubrication mechanism for front end bearing of main shaft - Google Patents
Oil-gas lubrication mechanism for front end bearing of main shaft Download PDFInfo
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- CN210739147U CN210739147U CN201921667216.8U CN201921667216U CN210739147U CN 210739147 U CN210739147 U CN 210739147U CN 201921667216 U CN201921667216 U CN 201921667216U CN 210739147 U CN210739147 U CN 210739147U
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Abstract
The utility model discloses a main shaft front end bearing oil-gas lubrication mechanism, the main shaft comprises a front bearing seat and a rotor, at least two front bearings are arranged in the front bearing seat, the rotor passes through the front bearings, an inner spacer ring and an outer spacer ring are arranged between two adjacent front bearings, the inner spacer ring is clamped between the inner rings of the two front bearings, the outer spacer ring is clamped between the outer rings of the two front bearings, and a gap is arranged between the inner spacer ring and the outer spacer ring, at least one oil gas injection channel is arranged in the front bearing seat, a first through hole is formed in the outer ring of the front bearing and communicated with the oil gas injection channel, an oil discharge channel is arranged in the front bearing seat, a second through hole is formed in the outer spacer ring and communicated with the oil discharge channel, and oil-gas mixed fluid between the inner spacer ring and the outer spacer ring is guided to the oil discharge channel by the second through hole and is discharged by the oil discharge channel. The utility model discloses can reduce bearing calorific capacity, do not influence machining precision, can increase of service life.
Description
Technical Field
The utility model relates to a main shaft especially relates to a main shaft front end bearing oil-gas lubrication mechanism.
Background
The main shaft is often used for high-speed precision machining, so the requirements on the stability and the reliability of the main shaft in the prior art are high, wherein the lubricating performance of the bearing directly influences the machining precision, the bearing capacity and the like of the main shaft, the conventional main shaft generally adopts a ball bearing, the condition of large heat productivity is easy to occur in the working process of the conventional main shaft, the conventional main shaft is easy to wear and tear, the machining precision and the service life of the main shaft are further influenced, the defects are obviously shown in ultrahigh-speed machining, the stress capable of bearing is small, and the requirement on large-load machining cannot be met.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to prior art not enough, provide a main shaft front end bearing oil-gas lubrication mechanism that can reduce bearing calorific capacity, do not influence machining precision, can increase of service life.
In order to solve the technical problem, the utility model adopts the following technical scheme.
An oil-gas lubrication mechanism for a front end bearing of a main shaft comprises a front bearing seat and a rotor, wherein at least two front bearings are arranged in the front bearing seat, the rotor penetrates through the front bearings, an inner spacer ring and an outer spacer ring are arranged between every two adjacent front bearings, the inner spacer ring is clamped between the inner rings of the two front bearings, the outer spacer ring is clamped between the outer rings of the two front bearings, a gap is arranged between the inner spacer ring and the outer spacer ring, at least one oil-gas injection channel is arranged in the front bearing seat, a first through hole is formed in the outer ring of the front bearing and communicated with the oil-gas injection channel, oil-gas mixed fluid in the oil-gas injection channel is guided to a position between the outer ring and the inner ring of the front bearings through the first through hole, an oil discharge channel is formed in the front bearing seat, and a second through hole is formed in the outer spacer ring, the second through hole is communicated with the oil discharge channel, and the oil-gas mixed fluid between the inner spacer ring and the outer spacer ring is guided to the oil discharge channel by the second through hole and is discharged by the oil discharge channel.
Preferably, 4 oil gas injection channels are formed in the front bearing seat, and the 4 oil gas injection channels are distributed along the circumferential direction of the front bearing seat.
Preferably, the outer side wall of the inner partition ring is formed with an outwardly convex annular outer edge, and the annular outer edge is close to the rear end of the inner partition ring.
Preferably, a slope is formed between the outer side wall of the annular outer edge and the rear end of the inner partition ring.
Preferably, the inner side wall of the outer spacer ring is formed with an annular inner edge protruding inwardly.
Preferably, the annular inner edge is located on a front side of the annular outer edge.
Preferably, an inner annular end of the annular inner edge is formed with a flange protruding backward, so that a groove is formed at a rear end of the annular inner edge, and the second through hole is communicated with the groove.
Preferably, a first oil storage groove is formed in the outer side wall of the outer spacer ring, the first oil storage groove surrounds the outer spacer ring, and the second through hole is communicated with the first oil storage groove.
Preferably, a bearing pressure plate is fixed at the front end of the front bearing seat, and the bearing pressure plate abuts against the outer ring of the front bearing at the foremost end.
Preferably, a second oil storage groove is formed in the rear end face of the bearing pressing plate, faces towards a gap between the front bearing inner ring and the outer ring, and is communicated with the oil discharge channel.
The utility model discloses an among the spindle front end bearing oil-gas lubrication mechanism, produce the gas-liquid diphasic oil-gas mixture fluid with lubricating oil and compressed air mixture, the oil-gas mixture fluid passes through oil-gas injection passageway and pours into again first through-hole between the outer loop of front bearing and the inner ring, discharge by the oil extraction passageway again, simultaneously under the gap effect between the inner spacer ring with outer spacer ring makes a plurality of front bearings in be full of the oil-gas mixture fluid, when the spindle operates, because the physical characteristic of oil and gas is different, after compressed air after the mixture got into the front bearing with lubricating oil, lubricating oil took compressed air as the carrier, even removal and contact bearing lubrication point on the pipeline wall makes the bearing obtain sufficient lubrication, compares prior art, the utility model discloses can effectively reduce the friction between the inside steel ball of bearing and the bearing inner and outer loop, the heating value of the bearing is greatly reduced, so that the machining precision is not affected, the service life of the main shaft can be prolonged, and the application requirement is well met.
Drawings
FIG. 1 is a first cross-sectional view of the oil-gas lubrication mechanism of the front end bearing of the main shaft of the present invention;
FIG. 2 is a second cross-sectional view of the oil-gas lubrication mechanism of the front end bearing of the spindle of the present invention;
FIG. 3 is a third sectional view of the oil-gas lubrication mechanism of the front end bearing of the spindle of the present invention;
FIG. 4 is an enlarged view of portion A of FIG. 3;
FIG. 5 is a block diagram of an outer spacer ring;
FIG. 6 is a block diagram of an inner spacer ring;
FIG. 7 is a block diagram of a bearing retainer plate;
fig. 8 is a cross-sectional view of a bearing pressure plate.
Detailed Description
The present invention will be described in more detail with reference to the accompanying drawings and examples.
The utility model discloses a spindle front end bearing oil-gas lubrication mechanism, as shown in a combined drawing 1-8, the spindle comprises a front bearing seat 1 and a rotor 3, at least two front bearings 2 are arranged in the front bearing seat 1, the rotor 3 passes through the front bearings 2, an inner spacer ring 4 and an outer spacer ring 5 are arranged between two adjacent front bearings 2, the inner spacer ring 4 is clamped between inner rings of the two front bearings 2, the outer spacer ring 5 is clamped between outer rings of the two front bearings 2, a gap 6 is arranged between the inner spacer ring 4 and the outer spacer ring 5, at least one oil-gas injection channel 7 is arranged in the front bearing seat 1, a first through hole 20 is arranged on the outer ring of the front bearing 2, the first through hole 20 is communicated with the oil-gas injection channel 7, and the oil-gas mixed fluid in the oil-gas injection channel 7 is guided to the position between the outer ring and the inner ring of the front bearing 2 by the first through hole 20, an oil discharge channel 9 is formed in the front bearing seat 1, a second through hole 50 is formed in the outer spacer ring 5, the second through hole 50 is communicated with the oil discharge channel 9, and the oil-gas mixed fluid between the inner spacer ring 4 and the outer spacer ring 5 is guided to the oil discharge channel 9 through the second through hole 50 and is discharged from the oil discharge channel 9.
In the above structure, the lubricating oil and the compressed air are mixed to generate the oil-gas mixed fluid of gas phase and liquid phase, the oil-gas mixed fluid is injected through the oil-gas injection channel 7, then enters between the outer ring and the inner ring of the front bearing 2 through the first through hole 20, and is discharged through the oil discharge channel 9, and simultaneously under the action of the gap 6 between the inner ring 4 and the outer ring 5, the plurality of front bearings 2 are filled with the oil-gas mixed fluid, when the main shaft operates, because the physical properties of oil and gas are different, after the mixed compressed air and the lubricating oil enter the front bearing 2, the lubricating oil takes the compressed air as a carrier, and the compressed air uniformly moves on the wall of the pipeline and contacts with the lubricating point of the bearing, so that the bearing is lubricated enough, compared with the prior art, the utility model can effectively reduce the friction between the steel balls inside the bearing and the inner ring and the outer ring of the bearing, and greatly reduce the, therefore, the machining precision is not affected, the service life of the main shaft can be prolonged, and the application requirement is well met.
As a preferred structure, as shown in fig. 1 and 2, 4 oil gas injection channels 7 are formed in the front bearing block 1, and the 4 oil gas injection channels 7 are distributed along the circumferential direction of the front bearing block 1. Based on the structure, the oil-gas mixed fluid enters the front bearing 2 from the periphery, so that the oil-gas mixed fluid is distributed more uniformly in the front bearing 2, and the lubricating effect is better.
Referring to fig. 1 to 4, in the present embodiment, an outer side wall of the inner partition ring 4 is formed with an outwardly protruding annular outer edge 40, and the annular outer edge 40 is close to a rear end of the inner partition ring 4.
In order to guide the oil-gas mixture, in the present embodiment, a slope 41 is formed between the outer side wall of the annular outer edge 40 and the rear end of the inner partition ring 4.
In order to collect and guide the oil-gas mixture fluid between the outer spacer 5 and the inner spacer 4 outwards, in the present embodiment, as shown in fig. 4 to 6, the inner side wall of the outer spacer 5 is formed with an annular inner edge 51 protruding inwards.
Further, the annular inner edge 51 is located on the front side of the annular outer edge 40.
In this embodiment, an inner annular end of the annular inner edge 51 is formed with a flange 52 protruding backward, so that a groove 53 is formed at a rear end of the annular inner edge 51, and the second through hole 50 is communicated with the groove 53.
Based on above-mentioned structure, can play the collection effect to oil-gas mixture fluid for oil-gas mixture fluid can be better by second through-hole 50 carries to oil extraction passageway 9, and then improves oil-gas mixture fluid's circulation ability.
Preferably, a first oil storage groove 54 is formed in an outer side wall of the outer spacer 5, the first oil storage groove 54 surrounds the outer spacer 5, and the second through hole 50 communicates with the first oil storage groove 54. The oil-gas mixed fluid is temporarily stored in the first oil storage tank 54 and then discharged from the oil discharge channel 9, so that the oil-gas mixed fluid has better fluidity and continuity.
As a preferred configuration, as shown in fig. 1, 7 and 8, a bearing pressure plate 10 is fixed to the front end of the front bearing housing 1, and the bearing pressure plate 10 abuts against the outer ring of the front bearing 2 located at the foremost end.
Further, a second oil storage groove 11 is formed in the rear end face of the bearing pressing plate 10, the second oil storage groove 11 faces a gap between the inner ring and the outer ring of the front bearing 2, and the second oil storage groove 11 is communicated with the oil discharge channel 9. The second oil storage tank 11 can collect and guide oil-gas mixed fluid at the front end, so that the oil-gas mixed fluid in the front bearing seat 1 can flow circularly.
The utility model discloses a main shaft front end bearing oil-gas lubrication mechanism, it compares prior art's beneficial effect to lie in, the bearing lubrication mode in the utility model adopts oil-gas lubrication, make the oil-gas mixture produce the gas-liquid diphase body through the oil-gas lubrication system, because the physical characteristic of oil and gas is different, the compressed air after the mixture gets into the pipeline with oil lubricating oil with compressed air as the carrier, even removal injection bearing lubrication point on the pipeline wall, make the main shaft bearing obtain appropriate amount lubrication, the oil demand of this kind of lubrication is very little, make the main shaft have more environmental protection, reduce the friction heating that too much lubrication produced simultaneously, and the compressed air pressure release form that the lubrication point erupted takes place certain change, form lower temperature to the further spray cooling of bearing, can make the main shaft bearing be suitable for and higher speed, oil-gas lubrication's injection point is at rolling spheroid bearing point and lubrication point simultaneously, the main shaft has better rigidity and higher bearing capacity.
The above is only the embodiment of the present invention, and is not intended to limit the present invention, and all modifications, equivalent replacements or improvements made within the technical scope of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. An oil-gas lubrication mechanism for a front end bearing of a main shaft, wherein the main shaft comprises a front bearing seat and a rotor, at least two front bearings are arranged in the front bearing seat, the rotor passes through the front bearings, and the oil-gas lubrication mechanism is characterized in that an inner spacer ring and an outer spacer ring are arranged between two adjacent front bearings, the inner spacer ring is clamped between the inner rings of the two front bearings, the outer spacer ring is clamped between the outer rings of the two front bearings, a gap is arranged between the inner spacer ring and the outer spacer ring, at least one oil-gas injection channel is arranged in the front bearing seat, a first through hole is arranged on the outer ring of the front bearing and communicated with the oil-gas injection channel, oil-gas mixed fluid in the oil-gas injection channel is guided between the outer ring and the inner ring of the front bearings through the first through hole, an oil discharge channel is arranged in the front bearing seat, and a second through hole is formed in the outer spacer ring and communicated with the oil discharge channel, and the oil-gas mixed fluid between the inner spacer ring and the outer spacer ring is guided to the oil discharge channel by virtue of the second through hole and is discharged by the oil discharge channel.
2. The spindle nose bearing oil-air lubrication mechanism of claim 1, wherein 4 oil-air injection channels are formed in the front bearing block, and the 4 oil-air injection channels are distributed along the circumferential direction of the front bearing block.
3. The spindle nose bearing oil-gas lubrication mechanism of claim 1, wherein the outer sidewall of the inner spacer is formed with an outwardly projecting annular outer edge that is proximate to the rear end of the inner spacer.
4. The spindle nose bearing oil-gas lubrication mechanism of claim 3, wherein a chamfer is formed between an outer side wall of the annular outer edge and a rear end of the inner spacer.
5. The spindle nose bearing oil-air lubrication mechanism of claim 3, wherein an inner side wall of the outer spacer ring is formed with an annular inner edge that projects inward.
6. The spindle nose bearing oil-air lubrication mechanism according to claim 5, wherein the annular inner edge is located on a front side of the annular outer edge.
7. The front end bearing oil-gas lubrication mechanism of a main shaft according to claim 6, wherein an inner annular end of the annular inner edge is formed with a flange protruding rearward so that a rear end of the annular inner edge forms a groove, and the second through hole communicates with the groove.
8. The oil-gas lubrication mechanism for the front end bearing of the main shaft according to claim 1, wherein a first oil storage groove is formed in the outer side wall of the outer spacer ring, the first oil storage groove surrounds the outer spacer ring, and the second through hole is communicated with the first oil storage groove.
9. The spindle nose bearing oil-air lubrication mechanism of claim 1, wherein a bearing pressure plate is fixed to a front end of the front bearing housing, the bearing pressure plate abutting against an outer ring of a front bearing located at a foremost end.
10. The oil-gas lubrication mechanism for the front end bearing of the main shaft according to claim 1, wherein a second oil storage groove is formed in the rear end face of the bearing pressure plate, faces the gap between the front bearing inner ring and the outer ring, and is communicated with the oil discharge channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921667216.8U CN210739147U (en) | 2019-10-02 | 2019-10-02 | Oil-gas lubrication mechanism for front end bearing of main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921667216.8U CN210739147U (en) | 2019-10-02 | 2019-10-02 | Oil-gas lubrication mechanism for front end bearing of main shaft |
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| Publication Number | Publication Date |
|---|---|
| CN210739147U true CN210739147U (en) | 2020-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921667216.8U Active CN210739147U (en) | 2019-10-02 | 2019-10-02 | Oil-gas lubrication mechanism for front end bearing of main shaft |
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| CN (1) | CN210739147U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594298A (en) * | 2019-10-02 | 2019-12-20 | 深圳市爱贝科精密机械有限公司 | Oil-gas lubrication mechanism for front end bearing of main shaft |
| CN117515043A (en) * | 2023-10-23 | 2024-02-06 | 广州市昊志机电股份有限公司 | Bearing lubrication structure, high-speed motorized spindle and bearing lubrication method |
-
2019
- 2019-10-02 CN CN201921667216.8U patent/CN210739147U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594298A (en) * | 2019-10-02 | 2019-12-20 | 深圳市爱贝科精密机械有限公司 | Oil-gas lubrication mechanism for front end bearing of main shaft |
| CN117515043A (en) * | 2023-10-23 | 2024-02-06 | 广州市昊志机电股份有限公司 | Bearing lubrication structure, high-speed motorized spindle and bearing lubrication method |
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Address after: 518111 1st and 2nd floors, building A6, silicon valley power intelligent terminal Industrial Park, No.20, Dafu Industrial Zone, Aobei community, Guanlan street, Longhua District, Shenzhen City, Guangdong Province Patentee after: Shenzhen aibeike Precision Industry Co.,Ltd. Address before: 518111 2nd floor, building A6, silicon valley power intelligent terminal Industrial Park, 20 Dafu Industrial Zone, Aobei community, Guanlan street, Longhua New District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN ABIG PRECISION MACHINERY Co.,Ltd. |