CN206550367U - A kind of machine tool chief axis supporting system - Google Patents
A kind of machine tool chief axis supporting system Download PDFInfo
- Publication number
- CN206550367U CN206550367U CN201720208593.XU CN201720208593U CN206550367U CN 206550367 U CN206550367 U CN 206550367U CN 201720208593 U CN201720208593 U CN 201720208593U CN 206550367 U CN206550367 U CN 206550367U
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- CN
- China
- Prior art keywords
- bearing
- bearing block
- machine tool
- supporting system
- chief axis
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- 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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- Rolling Contact Bearings (AREA)
Abstract
The utility model discloses a kind of machine tool chief axis supporting system, the supporting system includes bearing block and lid is connected to two end caps with opening at bearing block two ends, two angular contact ball bearings have been arranged side by side in the bearing block inner chamber two ends respectively, the main shaft is interference fitted through two end caps and with the bearing, arranged in the same direction with two bearings of one end positioned at bearing block, the bearing reversed arrangement at different ends on bearing block.The machine tool chief axis supporting system that the utility model is provided can bear larger axial force, can also meet main shaft and run at high speed, and be not susceptible to bearing fault, improve the stability of lathe operation.
Description
Technical field
The utility model is related to machine tool chief axis supporting technology field, more particularly to a kind of machine tool chief axis supporting system.
Background technology
Machine tool chief axis is existing in order to meet above-mentioned requirements to generally having high speed rotatory and larger axial load
Generally main shaft is supported using taper roll bearing in technology.However, the roller of taper roll bearing and Internal and external cycle raceway
Contact area is big, and coefficient of friction is big, is generated heat in high speed serious, causes bearing deformation, vibration, abnormal sound, running accuracy decline etc.
Relatively low rotating speed can only be led in problem, therefore actual production（About 3000 revs/min of kinds）To ensure that lathe is normally run.
It can be seen that, prior art could be improved and improve.
The content of the invention
In view of in place of above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of machine tool chief axis supporting system
System, it is intended to which solving generation heat when machine tool chief axis rotates at a high speed in the prior art seriously causes the technical problem of bearing deformation.
In order to achieve the above object, the utility model takes following technical scheme：
A kind of machine tool chief axis supporting system, including bearing block and lid are connected to two of bearing block two ends has opening
End cap, the bearing block inner chamber two ends have been arranged side by side two angular contact ball bearings respectively, the main shaft through two end caps and with
The bearing interference fit, is arranged in the same direction positioned at bearing block with two bearings of one end, the bearing at different ends on bearing block
Reversed arrangement.
In described machine tool chief axis supporting system, the bearing block is provided with spacer simultaneously between two bearings of one end
Mutually compressed by spacer.
In described machine tool chief axis supporting system, each described spacer respectively include be sheathed on interference on main shaft it is interior every
Set and the outer separator being sheathed on interference on bearing block inwall；The inner spacing collar is equal with outer separator width, the thickness of inner spacing collar
It is highly suitable with the leptoprosopy of the inner ring of the angular contact ball bearing, the thickness of outer separator and the outer ring of the angular contact ball bearing
Leptoprosopy is highly suitable.
In described machine tool chief axis supporting system, full of lubrication in the cavity formed between the inner spacing collar and outer separator
Fat.
In described machine tool chief axis supporting system, the main shaft has a shaft shoulder, the shaft shoulder and the position of bearing block one end
Bearing in outside is offseted, and a locking nut is provided with the bearing correspondence bearing block other end.
In described machine tool chief axis supporting system, described two end caps have one along the axially extending positioning of main shaft respectively
Projection, the bearing that two positioning convex are located at outside with two ends on bearing block respectively is abutted.
Beneficial effect：
The utility model provides a kind of machine tool chief axis supporting system, and the utility model is supported there is provided a kind of machine tool chief axis
System, compared with prior art, by the way that two angular contact ball bearings are arranged side by side respectively at bearing block two ends, can bear larger
Axial force, can also meet main shaft and run at high speed, and be not susceptible to bearing fault, improve the stability of lathe operation.
Brief description of the drawings
The structural representation for the machine tool chief axis supporting system that Fig. 1 provides for the utility model.
Fig. 2 is the partial enlarged drawing in S regions in Fig. 1.
Embodiment
The utility model provides a kind of machine tool chief axis supporting system, to make the purpose of this utility model, technical scheme and effect
Fruit is clearer, clear and definite, and the utility model is further described the embodiment that develops simultaneously referring to the drawings.It should be appreciated that this
The specific embodiment of place description only to explain the utility model, is not used to limit the utility model.
Referring to Fig. 1, the utility model provides a kind of machine tool chief axis supporting system.
Described machine tool chief axis supporting system includes bearing block 10 and covers two that are connected to bearing block two ends with opening
End cap 20, the bearing block inner chamber two ends have been arranged side by side two angular contact ball bearings 30 respectively, and the main shaft 90 passes through two
End cap is simultaneously interference fitted with the bearing, is arranged in the same direction with two bearings of one end positioned at bearing block, different on bearing block
It is illustrated that the bearing at different ends is set by the relative mode of inner ring leptoprosopy in the bearing reversed arrangement at end, Fig. 1.Such as Fig. 1 institutes
Show, the inwall of bearing block has two bearings for being located at inner side on the axially extending protuberance 101 of an inside main shaft, bearing block
The two ends of the protuberance are abutted respectively.Because the every one end of bearing block sets two bearings in the same direction, can effectively it bear
The axial force produced during spindle operation.It is small with bearing internal external circle contact area because the rolling element of angular contact ball bearing is spheroid,
Coefficient of friction is low, generates heat relatively low, and steady during high-speed rotation, noise is low.As can be seen here, the lathe master that the utility model is provided
E axle supporting system disclosure satisfy that machine tool chief axis high-speed cruising, and operate steadily, noise it is low, its angular contact under main shaft high-speed cruising
Ball bearing is hardly damaged, deformed, and improves the stability of lathe operation, reduces the frequency of the maintenance down because of main shaft bearing failure
Rate.
Preferably, the angular contact ball bearing is the serial bearings of NSK 7216, and the supporting system is common using the series
The bearing of precision can meet machine spindle speed up to 4000 revs/min, when using the rank of Series P 4 and above dimension accuracy
Bearing can meet machine spindle speed up to 8000-10000 revs/min, and the middle machine tool chief axis speed of service is obvious compared with prior art
Improve.
Further, the bearing block is with being provided with spacer between two bearings of one end and mutually pressed by spacer
Tightly, by setting spacer, phase mutual friction occurs for the bearing bracket stand and the inner ring of adjacent bearing or outer ring that can prevent bearing, i.e.
Eliminate the gap between the gap and two outer rings when same two bearings in one end offset between two inner rings so that two bearings
Coordinate even closer.
Specifically, each described spacer includes the inner spacing collar 402 being sheathed on interference on main shaft and is arranged with interference respectively
In the outer separator 401 on bearing block inwall；The inner spacing collar is equal with outer separator width, the thickness of inner spacing collar and the angular contact
The leptoprosopy of the inner ring of ball bearing is highly suitable, the thickness of outer separator and the leptoprosopy height phase of the outer ring of the angular contact ball bearing
When.That is, any interference or friction occur for retainer of the inner ring with outer ring not with bearing, improve bearing physical life.
Further, lubricating grease is full of in the cavity formed between the inner spacing collar and outer separator, i.e., described cavity is played
Oil storage is acted on, and improves the greasy property of bearing.
Further, a shaft shoulder 901 is machined with main shaft, with one on bearing block in two bearings in outside
Inner ring abut, another being located on bearing block in two bearings in outside is then locked by locking nut 50.Further
, described machine tool chief axis supporting system, described two end caps have one along the axially extending positioning convex of main shaft respectively
201, the outer ring that two positioning convex are located at the bearing in outside with two ends on bearing block respectively is abutted.Compressed by the auxiliary of end cap
Effect so that bearing positioning is more stablized, and further increases stationarity when main shaft runs at high speed.
In summary, the utility model provides a kind of machine tool chief axis supporting system, by distinguishing simultaneously at bearing block two ends
Row sets two angular contact ball bearings, can bear larger axial force, can also meet main shaft and run at high speed, and be not susceptible to
Bearing fault, improves the stability of lathe operation.By setting outer separator and inner spacing collar so that with the bearing fit of one end two
It is even closer, by outer separator and interior
It is understood that for those of ordinary skills, can according to the technical solution of the utility model and
The design of its utility model is subject to equivalent substitution or change, and all these changes or replacement should all belong to appended by the utility model
Scope of the claims.
Claims (6)
1. a kind of machine tool chief axis supporting system, including bearing block and lid are connected to two ends with opening at bearing block two ends
Lid, it is characterised in that two angular contact ball bearings have been arranged side by side in the bearing block inner chamber two ends respectively, the main shaft passes through two
End cap is simultaneously interference fitted with the bearing, is arranged in the same direction with two bearings of one end positioned at bearing block, different on bearing block
The bearing reversed arrangement at end.
2. machine tool chief axis supporting system according to claim 1, it is characterised in that two axles of the bearing block with one end
Spacer is provided between holding and is mutually compressed by spacer.
3. machine tool chief axis supporting system according to claim 2, it is characterised in that each described spacer includes interference respectively
Inner spacing collar that ground is sheathed on main shaft and the outer separator being sheathed on interference on bearing block inwall；The inner spacing collar and outer separator are wide
Degree it is equal, the thickness of inner spacing collar is highly suitable with the leptoprosopy of the inner ring of the angular contact ball bearing, the thickness of outer separator with it is described
The leptoprosopy of the outer ring of angular contact ball bearing is highly suitable.
4. machine tool chief axis supporting system according to claim 3, it is characterised in that shape between the inner spacing collar and outer separator
Into cavity in be full of lubricating grease.
5. machine tool chief axis supporting system according to claim 1, it is characterised in that the main shaft has a shaft shoulder, should
The shaft shoulder and the bearing positioned at outside of bearing block one end are offseted, and a locking is provided with the bearing correspondence bearing block other end
Nut.
6. machine tool chief axis supporting system according to claim 5, it is characterised in that described two end caps have one respectively
Along the axially extending positioning convex of main shaft, the bearing that two positioning convex are located at outside with two ends on bearing block respectively is abutted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720208593.XU CN206550367U (en) | 2017-03-06 | 2017-03-06 | A kind of machine tool chief axis supporting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720208593.XU CN206550367U (en) | 2017-03-06 | 2017-03-06 | A kind of machine tool chief axis supporting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206550367U true CN206550367U (en) | 2017-10-13 |
Family
ID=60363644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720208593.XU Expired - Fee Related CN206550367U (en) | 2017-03-06 | 2017-03-06 | A kind of machine tool chief axis supporting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206550367U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109382948A (en) * | 2018-11-02 | 2019-02-26 | 浙江工业大学 | A kind of arrester housing burr remover and method |
-
2017
- 2017-03-06 CN CN201720208593.XU patent/CN206550367U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109382948A (en) * | 2018-11-02 | 2019-02-26 | 浙江工业大学 | A kind of arrester housing burr remover and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171013 |
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| CF01 | Termination of patent right due to non-payment of annual fee |