CN203830747U - Efficient cooling spindle device - Google Patents
Efficient cooling spindle device Download PDFInfo
- Publication number
- CN203830747U CN203830747U CN201420277218.7U CN201420277218U CN203830747U CN 203830747 U CN203830747 U CN 203830747U CN 201420277218 U CN201420277218 U CN 201420277218U CN 203830747 U CN203830747 U CN 203830747U
- Authority
- CN
- China
- Prior art keywords
- main shaft
- bearing
- cooling
- spindle
- cooling water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Mounting Of Bearings Or Others (AREA)
Abstract
The utility model discloses an efficient cooling spindle device. The efficient cooling spindle device comprises a spindle and a spindle shell, wherein a cooling water jacket is arranged on the inner side of the spindle shell; a cooling channel is formed between the inner side wall of the spindle shell and the outer side wall of the cooling water jacket; a water inlet and a water outlet which are communicated with the cooling channel are formed in the wall thickness of the spindle shell; the front portion of the spindle is connected to the inner wall of the cooling water jacket through a front bearing set; the back portion of the spindle is connected to the inner wall of the cooling water jacket through a back bearing set; the back bearing set comprises a first bearing and a second bearing; the first bearing is close to the back end of the spindle; a gap is formed between the first bearing and the second bearing; the first bearing and the second bearing are elastically connected in the axial direction. The cooling channel is formed between the inner side wall of the spindle shell and the outer side wall of the cooling water jacket, thereby realizing heat exchange of heat produced in the rotating process of the spindle, and lowering the temperatures of the spindle shell and the spindle.
Description
Technical field
The utility model relates to machining center equipment technical field, relates in particular to a kind of main shaft device of high efficiency cooling.
Background technology
The main shaft of machining center is supported by anterior bearing group and rear bearings group, is then installed in main shaft housing.Anterior bearing group and rear bearings group are consisted of a plurality of bearing.Because the number of bearings of anterior bearing group is more than rear bearings group, therefore the caloric value of anterior bearing group is large, and temperature raises fast, causes main shaft thermal expansion and extends to the back-end, thereby affecting main shaft precision and stability.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of main shaft device of high efficiency cooling, large to solve the caloric value of anterior bearing group of prior art, temperature raises fast, causes main shaft thermal expansion elongation to the back-end, thereby affects the problem of main shaft precision and stability.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of main shaft device of high efficiency cooling, comprise main shaft and main shaft housing, described main shaft housing inner side is provided with cooling water jecket, between the madial wall of described main shaft housing and the lateral wall of cooling water jecket, form cooling duct, in the wall thickness of described main shaft housing, be provided with the water inlet and the delivery port that are connected with this cooling duct, described main shaft front portion is connected on the inwall of cooling water jecket by anterior bearing group, described main shaft rear portion is connected on the inwall of cooling water jecket by rear bearings group, described rear bearings group comprises clutch shaft bearing and the second bearing, described clutch shaft bearing is near the rear end of main shaft, between described clutch shaft bearing and the second bearing, be provided with gap, described clutch shaft bearing adopts elasticity to be connected with the second bearing in the axial direction.
Adopt above structure compared with prior art, the utlity model has following advantage: owing to forming cooling duct between the madial wall at main shaft housing and the lateral wall of cooling water jecket, can carry out heat exchange to the heat producing in main shaft rotation process, reduce the temperature of main shaft housing and main shaft, thereby reduce the generation of thermal expansion; Because clutch shaft bearing and the second bearing adopt elasticity in the axial direction, be connected, can eliminate the gap of main shaft and bearing, and bring into play compensating action when main shaft thermal expansion is extended backward, reduce the hot amount of variability of spindle unit, can improve the stability of spindle unit.
As preferably, described cooling duct in the shape of a spiral.
As preferably, between the position, both ends of described cooling water jecket lateral wall and main shaft housing, be provided with sealing ring, the described sealing ring of every one end is arranged with 2 groups in parallel.
As preferably, described the second bearing and main shaft are provided with elastic connecting device in the axial direction, and described elastic connecting device comprises the reed being sheathed on main shaft, and the stacked setting of described reed is also covered with described gap.
As preferably, the both ends of the described main shaft housing bearing gland that is spirally connected respectively.
Accompanying drawing explanation
Fig. 1 is the structural representation of the main shaft device of high efficiency cooling of the present utility model.
Shown in figure: 1, main shaft, 2, main shaft housing, 3, cooling water jecket, 4, cooling duct, 5, water inlet, 6, delivery port, 7, anterior bearing group, 8, rear bearings group, 801, clutch shaft bearing, the 802, second bearing, 9, gap, 10, sealing ring, 11, reed, 12, bearing gland.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present utility model is described in further detail.Following examples are used for illustrating the utility model, but are not used for limiting scope of the present utility model.
A kind of main shaft device of high efficiency cooling, comprise main shaft 1 and main shaft housing 2, described main shaft housing 2 inner sides are provided with cooling water jecket 3, between the lateral wall of the madial wall of described main shaft housing 2 and cooling water jecket 3, form cooling duct 4, in the wall thickness of described main shaft housing 2, be provided with the water inlet 5 and the delivery port 6 that are connected with this cooling duct 4, described main shaft 1 front portion is connected on the inwall of cooling water jecket 3 by anterior bearing group 7, described main shaft 1 rear portion is connected on the inwall of cooling water jecket 3 by rear bearings group 8, described rear bearings group 8 comprises clutch shaft bearing 801 and the second bearing 802, described clutch shaft bearing 801 is near the rear end of main shaft 1, between described clutch shaft bearing 801 and the second bearing 802, be provided with gap 9, described clutch shaft bearing 801 adopts elasticity to be connected with the second bearing 802 in the axial direction.
Described cooling duct 4 in the shape of a spiral.
Between the position, both ends of described cooling water jecket 3 lateral walls and main shaft housing 2, be provided with sealing ring 10, the described sealing ring 10 of every one end is arranged with 2 groups in parallel.
Described the second bearing 802 is provided with elastic connecting device in the axial direction with main shaft 1, and described elastic connecting device comprises the reed 10 being sheathed on main shaft 1, and the stacked setting of described reed 10 is also covered with described gap 9.
The both ends of described main shaft housing 2 bearing gland 12 that is spirally connected respectively.
After main shaft thermal expansion, main shaft extends to the back-end, the gap smaller between clutch shaft bearing and the second bearing, after the cooling retraction of main shaft, gap between clutch shaft bearing and the second bearing resets by reed, and reed has played good supporting role, prevents the play of clutch shaft bearing and the second bearing.
The utlity model has following advantage: owing to forming cooling duct between the madial wall at main shaft housing and the lateral wall of cooling water jecket, can carry out heat exchange to the heat producing in main shaft rotation process, reduce the temperature of main shaft housing and main shaft, thereby reduce the generation of thermal expansion; Because clutch shaft bearing and the second bearing adopt elasticity in the axial direction, be connected, can eliminate the gap of main shaft and bearing, and bring into play compensating action when main shaft thermal expansion is extended backward, reduce the hot amount of variability of spindle unit, can improve the stability of spindle unit.
The above is only preferred embodiment of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (5)
1. the main shaft device of a high efficiency cooling, it is characterized in that: comprise main shaft (1) and main shaft housing (2), described main shaft housing (2) inner side is provided with cooling water jecket (3), between the lateral wall of the madial wall of described main shaft housing (2) and cooling water jecket (3), form cooling duct (4), in the wall thickness of described main shaft housing (2), be provided with the water inlet (5) and the delivery port (6) that are connected with this cooling duct (4), described main shaft (1) is anterior to be connected on the inwall of cooling water jecket (3) by anterior bearing group (7), described main shaft (1) rear portion is connected on the inwall of cooling water jecket (3) by rear bearings group (8), described rear bearings group (8) comprises clutch shaft bearing (801) and the second bearing (802), described clutch shaft bearing (801) is near the rear end of main shaft (1), between described clutch shaft bearing (801) and the second bearing (802), be provided with gap (9), described clutch shaft bearing (801) adopts elasticity to be connected with the second bearing (802) in the axial direction.
2. the main shaft device of high efficiency cooling according to claim 1, is characterized in that: described cooling duct (4) in the shape of a spiral.
3. the main shaft device of high efficiency cooling according to claim 2, it is characterized in that: between the position, both ends of described cooling water jecket (3) lateral wall and main shaft housing (2), be provided with sealing ring (10), the described sealing ring (10) of every one end is arranged with 2 groups in parallel.
4. the main shaft device of high efficiency cooling according to claim 1, it is characterized in that: described the second bearing (802) is provided with elastic connecting device in the axial direction with main shaft (1), described elastic connecting device comprises the reed (10) being sheathed on main shaft (1), and the stacked setting of described reed (10) is also covered with described gap (9).
5. the main shaft device of high efficiency cooling according to claim 4, is characterized in that: the both ends of described main shaft housing (2) bearing gland (12) that is spirally connected respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420277218.7U CN203830747U (en) | 2014-05-27 | 2014-05-27 | Efficient cooling spindle device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420277218.7U CN203830747U (en) | 2014-05-27 | 2014-05-27 | Efficient cooling spindle device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203830747U true CN203830747U (en) | 2014-09-17 |
Family
ID=51508636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420277218.7U Expired - Fee Related CN203830747U (en) | 2014-05-27 | 2014-05-27 | Efficient cooling spindle device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203830747U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438726A (en) * | 2016-09-28 | 2017-02-22 | 重庆圣巴巴拉实业有限公司 | Rotary bending tester hub clamping device capable of cooling bearing |
| CN110325752A (en) * | 2017-03-30 | 2019-10-11 | 株式会社牧野铣床制作所 | Main shaft device |
-
2014
- 2014-05-27 CN CN201420277218.7U patent/CN203830747U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438726A (en) * | 2016-09-28 | 2017-02-22 | 重庆圣巴巴拉实业有限公司 | Rotary bending tester hub clamping device capable of cooling bearing |
| CN110325752A (en) * | 2017-03-30 | 2019-10-11 | 株式会社牧野铣床制作所 | Main shaft device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20150527 |
|
| EXPY | Termination of patent right or utility model |