CN202621942U - Vertical liquid suspension electric spindle - Google Patents
Vertical liquid suspension electric spindle Download PDFInfo
- Publication number
- CN202621942U CN202621942U CN 201220307726 CN201220307726U CN202621942U CN 202621942 U CN202621942 U CN 202621942U CN 201220307726 CN201220307726 CN 201220307726 CN 201220307726 U CN201220307726 U CN 201220307726U CN 202621942 U CN202621942 U CN 202621942U
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- oil
- liquid
- collection chamber
- vertical
- bearing
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Abstract
The utility model discloses a vertical liquid suspension electric spindle which comprises a casing assembly, a vertical spindle, a front liquid bearing and a back liquid bearing. The vertical spindle is installed in the casing assembly through the front liquid bearing and the back liquid bearing, a motor rotor is installed at the back end of the vertical spindle, a motor stator is sleeved outside the motor rotor, the motor stator is fixed in the casing assembly, the casing assembly is provided with a first oil collection cavity communicated with an oil release path of the back liquid bearing and a second oil collection cavity communicated with an oil release path of the front liquid bearing, an oil suction path communicated with the first oil collection cavity and the second oil collection cavity is arranged on the casing assembly, and the oil suction path is externally connected with an oil pump. The vertical liquid suspension electric spindle has the advantages of being capable of timely discharging oil liquid, improving sealing effect and preventing oil liquid leakage.
Description
Technical field
The utility model relates to machining equipment, relates in particular to the vertical liquid electric main shaft that suspends.
Background technology
Machine tool industry is the foundation stone of equipment manufacture and national defense industry.The electricity main shaft is the Core Feature parts that modern Digit Control Machine Tool is realized accurate ultra processing, and it combines machine tool chief axis function and electric motors function together from structure, and speed is high, and precision is high, speed-regulating range width, and capable of fast starting and accurate stopping can be realized control automatically.
Liquid suspension electricity main shaft has the error leveling effect as high-precision electric main shaft during running, than rolling bearing electricity main shaft and magnetic suspension electricity main shaft, liquid suspension electricity spindle rotation accuracy is higher, and the life-span is longer; Than gas suspension electricity base bearing, liquid suspension electricity main shaft loading capability is higher, and rigidity is bigger, thereby in the accurate ultra lathe, has obtained extensive use.
In Precision Machining, many occasions need be used vertical electric main shaft, and such as the workpiece radius of gyration is big sometimes, horizontal placement takes up room greatly, are more suitable in vertical placement; Again such as because the influence of gravity, workpiece or the horizontal placement of electric main shaft cause distortion because of gravity easily, thereby have influenced the form and position tolerances such as dimensional accuracy and perpendicularity etc. of electric main shaft processing work.
If but vertical electric main shaft adopts the liquid suspension form, the leakage of oil problem is difficult to solve.Fluid leaks on the workbench along gap of main reinforcement after perhaps main shaft is shut down in electric main axis rotation process under the effect of gravity easily.
Because existing liquid suspension main shaft does not well address these problems, cause the vertical electric main shaft of liquid suspension on engineering, well not used.
The utility model content
The technical problem that the utility model will solve is the deficiency that overcomes prior art, the vertical liquid that provide a kind of and can in time discharge fluid, improves sealing effectiveness, the prevents oil liquid leakage electric main shaft that suspends.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of vertical liquid electric main shaft that suspends; Comprise housing unit, vertical spindle, preceding liquid-bearing, back liquid-bearing, said vertical spindle is installed in the housing unit through preceding liquid-bearing and back liquid-bearing, and said vertical spindle rear end is equiped with rotor; Said rotor is arranged with motor stator outward; Said motor stator is fixed in the housing unit, and said housing unit is provided with first collection chamber that communicates with the draining oil circuit of back liquid-bearing, and second collection chamber that communicates with the draining oil circuit of preceding liquid-bearing; Said housing unit is provided with the oil pumping oil circuit that is communicated with said first collection chamber and second collection chamber, the external oil well pump of said oil pumping oil circuit.
Said housing unit comprises casing, support, sleeve, drive end bearing bracket and rear end cap; Said support is installed in said casing front end; Said sleeve rear end is passed support and is extended in the casing, and barrel forward end is stretched out support, and said drive end bearing bracket and rear end cap are divided into the rear and front end of sleeve; The annular chamber of said first collection chamber for surrounding by casing, support and sleeve, the annular chamber of said second collection chamber for surrounding by drive end bearing bracket and vertical spindle.
Said oil pumping oil circuit comprises first oil pumping oil circuit that is communicated with said first collection chamber and the second oil pumping oil circuit that is communicated with said second collection chamber.
The said first oil pumping oil circuit comprises first passage of being located on the casing and first flexible pipe of being located in the casing, and said first flexible pipe upper end is communicated with first passage, and the first flexible pipe lower end extends to the bottom of said first collection chamber.
Second flexible pipe that the said second oil pumping oil circuit comprises the second channel be located on the casing, be located at oil pumping passage on the sleeve, be located at the oil pumping hole on the drive end bearing bracket and be communicated with second channel and oil pumping passage; Said oil pumping passage is communicated with said oil pumping hole, and said oil pumping hole is communicated with second collection chamber.
Be formed with the 3rd collection chamber between said sleeve and the vertical spindle, said oil pumping passage is provided with the intercommunicating pore that communicates with the 3rd collection chamber.
Be provided with back-up ring in said second collection chamber, said back-up ring fixed cover is located on the said vertical spindle.
Said back-up ring lower end edge vertical spindle periphery is provided with concave station, and said drive end bearing bracket upper edge vertical spindle periphery is provided with boss, and said boss extends in the said concave station.
Liquid-bearing rear end, said back is provided with the liquid thrust bearing, and the draining oil circuit of said liquid thrust bearing communicates with the draining oil circuit of back thrust bearing.
Be provided with outside framework oil seal between said drive end bearing bracket and the vertical spindle.
Compared with prior art, the advantage of the utility model is:
The vertical liquid of the utility model electric main shaft that suspends; Its housing unit is provided with first collection chamber that communicates with the draining oil circuit of back liquid-bearing; And second collection chamber that communicates with the draining oil circuit of preceding liquid-bearing; Housing unit is provided with the oil pumping oil circuit that is communicated with first collection chamber and second collection chamber, and the external oil well pump of oil pumping oil circuit will be collected from the fluid that the front and back liquid-bearing releases through first collection chamber and second collection chamber; Fluid is in time taken away through the oil pumping oil circuit through oil well pump again; Thereby can prevent that fluid from releasing under the gravity effect, solved the suspend leakage of oil problem of electric main shaft of vertical liquid from the vertical spindle fit-up gap, can promote the suspend development of electric main shaft of vertical liquid.Be provided with back-up ring in second collection chamber, the back-up ring fixed cover is located on the vertical spindle, during the work of electric main shaft, flow to the back-up ring that the fluid on the back-up ring will be rotated at a high speed with vertical spindle along vertical spindle and is thrown on the second collection chamber madial wall; Back-up ring lower end edge vertical spindle periphery is provided with concave station; Drive end bearing bracket upper edge vertical spindle periphery is provided with boss; Boss extends in the concave station, and when electric main shaft stops the rotation, the fluid that flow on the back-up ring along vertical spindle will drip in second collection chamber along the back-up ring lateral wall; Avoid fluid to continue to flow downward, improve sealing effectiveness along vertical spindle.
Description of drawings
Fig. 1 is the main cutaway view of the utility model.
Fig. 2 is the A-A cutaway view of Fig. 1.
Each label is represented among the figure:
1, housing unit; 2, vertical spindle; 3, preceding liquid-bearing; 4, back liquid-bearing; 5, rotor; 6, motor stator; 7, oil well pump; 8, liquid thrust bearing; 9, outside framework oil seal; 10, first collection chamber; 11, casing; 12, support; 13, sleeve; 14, drive end bearing bracket; 15, rear end cap; 16, back-up ring; 20, second collection chamber; 30, the 3rd collection chamber; 101, the first oil pumping oil circuit; 111, first passage; 112, first flexible pipe; 113, second channel; 114, second flexible pipe; 131, oil pumping passage; 132, intercommunicating pore; 141, oil pumping hole; 142, boss; 161, concave station; 201, the second oil pumping oil circuit.
The specific embodiment
A kind of vertical liquid that Fig. 1 and Fig. 2 show the utility model electric main shaft that suspends; Comprise housing unit 1, vertical spindle 2, preceding liquid-bearing 3, back liquid-bearing 4; Vertical spindle 2 is installed in the housing unit 1 through preceding liquid-bearing 3 and back liquid-bearing 4; Vertical spindle 2 rear ends are equiped with rotor 5, are arranged with motor stator 6 outside the rotor 5, and motor stator 6 is fixed in the housing unit 1; Housing unit 1 is provided with first collection chamber 10 that communicates with the draining oil circuit of back liquid-bearing 4; And second collection chamber 20 that communicates with the draining oil circuit of preceding liquid-bearing 3, housing unit 1 is provided with the oil pumping oil circuit that is communicated with first collection chamber 10 and second collection chamber 20, the external oil well pump 7 of oil pumping oil circuit; To collect from the fluid that the front and back liquid-bearing releases through first collection chamber 10 and second collection chamber 20; Fluid is in time taken away through the oil pumping oil circuit through oil well pump 7 again; Thereby can prevent that fluid from releasing under the gravity effect from vertical spindle 2 fit-up gaps; Solve the suspend leakage of oil problem of electric main shaft of vertical liquid, can promote the suspend development of electric main shaft of vertical liquid.
In the present embodiment; Housing unit 1 comprises casing 11, support 12, sleeve 13, drive end bearing bracket 14 and rear end cap 15, and support 12 is installed in casing 11 front ends, and casing 11 rear ends are equiped with bonnet; Sleeve 13 rear ends are passed support 12 and are extended in the casing 11; Sleeve 13 front ends stretch out support 12, and drive end bearing bracket 14 and rear end cap 15 are divided into the rear and front end of sleeve 13, are provided with outside framework oil seal 9 between drive end bearing bracket 14 and the vertical spindle 2; The annular chamber of first collection chamber 10 for surrounding by casing 11, support 12 and sleeve 13, the annular chamber of second collection chamber 20 for surrounding by drive end bearing bracket 14 and vertical spindle 2; The oil circuit of pumping comprises that first oil pumping oil circuit 101 that is communicated with first collection chamber 10 and the second oil pumping oil circuit, 201, the first oil pumping oil circuits 101 that are communicated with second collection chamber 20 and the second oil pumping oil circuit 201 are connected an oil well pump 7 respectively.The first oil pumping oil circuit 101 comprises that first passage of being located on the casing 11 111 and first flexible pipe, 112, the first flexible pipes, 112 upper ends of being located in the casing 11 are communicated with first passage 111, and first flexible pipe, 112 lower ends extend to the bottom of first collection chamber 10; Second flexible pipe 114 that the second oil pumping oil circuit 201 comprises the second channel 113 be located on the casing 11, be located at oil pumping passage 131 on the sleeve 13, be located at the oil pumping hole 141 on the drive end bearing bracket 14 and be communicated with second channel 113 and oil pumping passage 131; Oil pumping passage 131 is communicated with oil pumping hole 141, and oil pumping hole 141 is communicated with second collection chamber 20.Be formed with the 3rd collection chamber 30, the three collection chambers 30 between sleeve 13 and the vertical spindle 2 also in the form of a ring, oil pumping passage 131 is provided with the intercommunicating pore 132 that communicates with the 3rd collection chamber 30.
In the present embodiment; Be provided with back-up ring 16 in second collection chamber 20; Back-up ring 16 fixed covers are located on the vertical spindle 2, and when electric main shaft is worked, the fluid that flow on the back-up ring 16 along vertical spindle 2 will be thrown on second collection chamber, 20 madial walls by the back-up ring 16 that rotates at a high speed with vertical spindle 2; Back-up ring 16 lower end edge vertical spindles 2 peripheries are provided with concave station 161; Drive end bearing bracket 14 upper edge vertical spindles 2 peripheries are provided with boss 142; Boss 142 extends in the concave station 161, and when electric main shaft stops the rotation, the fluid that flow on the back-up ring 16 along vertical spindle 2 will drip in second collection chamber 20 along back-up ring 16 lateral walls; Avoid fluid to continue to flow downward, improve sealing effectiveness along vertical spindle 2.
In the present embodiment, be provided with liquid thrust bearing 8 in liquid-bearing 4 rear ends, back, the draining oil circuit of liquid thrust bearing 8 communicates with the draining oil circuit of back liquid-bearing 4.
The suspend operation principle of electric main shaft of the vertical liquid of the utility model:
When vertical liquid suspends the work of electric main shaft, fluid from casing 11 rear ends before the oil-feed oil circuit gets into respectively liquid-bearing 3, after liquid-bearing 4 and liquid thrust bearing 8.The fluid of liquid-bearing 3 outflow of the gap between liquid-bearing 3 and the vertical spindle 2 in the past vertically before getting into, wherein part converges to second collection chamber 20 from this lower end, gap, and some converges to the 3rd collection chamber 30 from this upper end, gap; The fluid that gets into back liquid-bearing 4 flows out from the gap between back liquid-bearing 4 and the vertical spindle 2 vertically, and wherein part converges to the 3rd collection chamber 30 from this lower end, gap, and some converges to first collection chamber 10 from this upper end, gap; The fluid major part that gets into liquid thrust bearing 8 converges to first collection chamber 10 through the draining oil circuit; The first oil pumping oil circuit 101 is connected an oil well pump 7 respectively with the second oil pumping oil circuit 201; The fluid that gets into first collection chamber 10 is in time drawn back fuel tank by oil well pump 7 through the first oil pumping oil circuit 101, and the fluid that gets in second collection chamber 20 and the 3rd collection chamber 30 is in time drawn back fuel tank by another oil well pump 7 through the second oil pumping oil circuit 201.After the electricity main shaft is shut down; Oil well pump 7 continues oil pumping about 5 minutes, and the oil return with each bearing is extracted in the fuel tank as much as possible, after oil well pump 7 is shut down; Remaining in first collection chamber 10 below vertical spindle 2 have a small amount of fluid; This part fluid is sealed in first collection chamber 10 by the outside framework oil seal 9 between drive end bearing bracket 14 and the vertical spindle 2, avoids oil liquid leakage to vertical spindle 2 belows, in the electric main shaft course of work; Have relative motion between outside framework oil seal 9 and the vertical spindle 2, the mutual match grinding of both sides can make vertical spindle 2 and outside framework oil seal 9 find a suitable seal clearance automatically.
The above-mentioned just preferred embodiment of the utility model is not that the utility model is done any pro forma restriction.Any those of ordinary skill in the art; Under the situation that does not break away from the utility model technical scheme scope; All the technology contents of above-mentioned announcement capable of using is made many possible changes and modification to the utility model technical scheme, or is revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from the utility model technical scheme, all should drop in the scope of the utility model technical scheme protection any simple modification, equivalent variations and modification that above embodiment did according to the utility model technical spirit.
Claims (10)
1. a vertical liquid electric main shaft that suspends; Comprise housing unit (1), vertical spindle (2), preceding liquid-bearing (3), back liquid-bearing (4); Said vertical spindle (2) is installed in the housing unit (1) through preceding liquid-bearing (3) and back liquid-bearing (4); Said vertical spindle (2) rear end is equiped with rotor (5); The outer motor stator (6) that is arranged with of said rotor (5); Said motor stator (6) is fixed in the housing unit (1), it is characterized in that: said housing unit (1) is provided with first collection chamber (10) that communicates with the draining oil circuit of back liquid-bearing (4), and second collection chamber (20) that communicates with the draining oil circuit of preceding liquid-bearing (3); Said housing unit (1) is provided with the oil pumping oil circuit that is communicated with said first collection chamber (10) and second collection chamber (20), the external oil well pump of said oil pumping oil circuit (7).
2. the vertical liquid according to claim 1 electric main shaft that suspends; It is characterized in that: said housing unit (1) comprises casing (11), support (12), sleeve (13), drive end bearing bracket (14) and rear end cap (15); Said support (12) is installed in said casing (11) front end; Said sleeve (13) rear end is passed support (12) and is extended in the casing (11); Sleeve (13) front end stretches out support (12); Said drive end bearing bracket (14) and rear end cap (15) are divided into the rear and front end of sleeve (13), the annular chamber of said first collection chamber (10) for being surrounded by casing (11), support (12) and sleeve (13), the annular chamber of said second collection chamber (20) for being surrounded by drive end bearing bracket (14) and vertical spindle (2).
3. the vertical liquid according to claim 2 electric main shaft that suspends is characterized in that: said oil pumping oil circuit comprises first oil pumping oil circuit (101) that is communicated with said first collection chamber (10) and second oil circuit (201) of pumping that is communicated with said second collection chamber (20).
4. the vertical liquid according to claim 3 electric main shaft that suspends; It is characterized in that: the said first oil pumping oil circuit (101) comprises the first passage of being located on the casing (11) (111) and is located at first flexible pipe (112) in the casing (11); Said first flexible pipe (112) upper end is communicated with first passage (111), and first flexible pipe (112) lower end extends to the bottom of said first collection chamber (10).
5. the vertical liquid according to claim 3 electric main shaft that suspends; It is characterized in that: second flexible pipe (114) that the said second oil pumping oil circuit (201) comprises the second channel (113) be located on the casing (11), be located at oil pumping passage (131) on the sleeve (13), be located at the oil pumping hole (141) on the drive end bearing bracket (14) and be communicated with second channel (113) and oil pumping passage (131); Said oil pumping passage (131) is communicated with said oil pumping hole (141), and said oil pumping hole (141) is communicated with second collection chamber (20).
6. the vertical liquid according to claim 5 electric main shaft that suspends; It is characterized in that: be formed with the 3rd collection chamber (30) between said sleeve (13) and the vertical spindle (2), said oil pumping passage (131) is provided with the intercommunicating pore (132) that communicates with the 3rd collection chamber (30).
7. according to the electric main shaft that suspends of each described vertical liquid in the claim 2 to 6, it is characterized in that: be provided with back-up ring (16) in said second collection chamber (20), said back-up ring (16) fixed cover is located on the said vertical spindle (2).
8. the vertical liquid according to claim 7 electric main shaft that suspends; It is characterized in that: said back-up ring (16) lower end edge vertical spindle (2) periphery is provided with concave station (161); Said drive end bearing bracket (14) upper edge vertical spindle (2) periphery is provided with boss (142), and said boss (142) extends in the said concave station (161).
9. the vertical liquid according to claim 8 electric main shaft that suspends; It is characterized in that: liquid-bearing (4) rear end, said back is provided with liquid thrust bearing (8), and the draining oil circuit of said liquid thrust bearing (8) communicates with the draining oil circuit of back thrust bearing (4).
10. the vertical liquid according to claim 9 electric main shaft that suspends is characterized in that: be provided with outside framework oil seal (9) between said drive end bearing bracket (14) and the vertical spindle (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220307726 CN202621942U (en) | 2012-06-28 | 2012-06-28 | Vertical liquid suspension electric spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220307726 CN202621942U (en) | 2012-06-28 | 2012-06-28 | Vertical liquid suspension electric spindle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202621942U true CN202621942U (en) | 2012-12-26 |
Family
ID=47375185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220307726 Withdrawn - After Issue CN202621942U (en) | 2012-06-28 | 2012-06-28 | Vertical liquid suspension electric spindle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202621942U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102699356A (en) * | 2012-06-28 | 2012-10-03 | 湖南海捷主轴科技有限公司 | Vertical liquid suspension electric spindle |
| CN108372317A (en) * | 2018-04-03 | 2018-08-07 | 台州屹捷数控机床有限公司 | Electro spindle is driven in one kind |
-
2012
- 2012-06-28 CN CN 201220307726 patent/CN202621942U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102699356A (en) * | 2012-06-28 | 2012-10-03 | 湖南海捷主轴科技有限公司 | Vertical liquid suspension electric spindle |
| CN102699356B (en) * | 2012-06-28 | 2014-04-23 | 湖南海捷主轴科技有限公司 | Vertical liquid suspension electric spindle |
| CN108372317A (en) * | 2018-04-03 | 2018-08-07 | 台州屹捷数控机床有限公司 | Electro spindle is driven in one kind |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121226 Effective date of abandoning: 20140423 |
|
| RGAV | Abandon patent right to avoid regrant |