CN207548290U - A kind of main shaft assembly - Google Patents
A kind of main shaft assembly Download PDFInfo
- Publication number
- CN207548290U CN207548290U CN201721457881.5U CN201721457881U CN207548290U CN 207548290 U CN207548290 U CN 207548290U CN 201721457881 U CN201721457881 U CN 201721457881U CN 207548290 U CN207548290 U CN 207548290U
- Authority
- CN
- China
- Prior art keywords
- conical bearing
- main shaft
- axis body
- bearing
- axle track
- 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
Links
Abstract
The utility model is related to a kind of main shaft assemblies.A kind of main shaft assembly including pedestal and is arranged on the main shaft and bearing assembly of base interior；The base interior is equipped with axle track, and main shaft includes the axis body being threaded through in axle track and the cover being enclosed in axle track lower port, and the lower end of axis body is connect with cover integral middle；The axis body is located in by bearing assembly in axle track, and bearing assembly includes the upper conical bearing positioned by top chock and the lower conical bearing positioned by step；The upper conical bearing and lower conical bearing are disposed opposite to each other, and lower sealing ring is equipped between the axis body side wall and axle track side wall below lower conical bearing, and butterfly spring is equipped between lower sealing ring and lower conical bearing；Upper sealing ring is equipped with above the upper conical bearing, upper sealing ring is positioned by locking nut.The main shaft assembly can bear the load in axial two directions, and further improve the endurance for axially downwardly load.
Description
Technical field
The utility model is related to a kind of main shaft assemblies.
Background technology
Being constantly progressive and develop with industry, manufacturing industry is for the required precision of numerically-controlled machine tool and the degree of automation requirement
Higher and higher, people need constantly to improve its structure from different mechanisms, so as to meet the requirement of high-precision and automation.Mesh
Forward spindle assembly generally comprises babinet, the main shaft across babinet, is connected between main shaft and babinet by bearing assembly, main shaft and case
It is sealed between body and bearing assembly by sealing ring, positioned at the belt pulley or chain sprocket of front-end of spindle, positioned at rear-end of spindle
Work piece holder mounting portion, the mounting hole on box body mounting base.At present, considered during assembling according to main shaft Impact direction using not
The bearing of same type when main shaft is by radial load and single direction axial load, can be born using taper roll bearing.
But the mechanism is limited for the endurance of axial load, and is easy to damage, therefore needs to be optimized.
Invention content
To solve the above-mentioned problems, the purpose of this utility model is to provide a kind of main shaft assembly, which can hold
By the load in axial two directions, and further improve the endurance for axially downwardly load.
In order to realize above-mentioned purpose, the utility model employs following technical solution：
A kind of main shaft assembly including pedestal and is arranged on the main shaft and bearing assembly of base interior；
The base interior is equipped with axle track, and main shaft includes the axis body being threaded through in axle track and is enclosed in axle track lower port
On cover, the lower end of axis body is connect with cover integral middle；The axis body is located in by bearing assembly in axle track, bearing
Component includes the upper conical bearing positioned by top chock and the lower conical bearing positioned by step and locates
Locating snap ring between upper conical bearing and lower conical bearing；The upper conical bearing and lower conical bearing are disposed opposite to each other, lower circle
Lower sealing ring is equipped between axis body side wall and axle track side wall below cone bearing, butterfly is equipped between lower sealing ring and lower conical bearing
Shape spring；Upper sealing ring is equipped with above the upper conical bearing, upper sealing ring is positioned by locking nut.
Preferably, the locking nut is set on the outside of axis body and is threadedly coupled with the axis body, the ring of upper sealing ring
Body is set on locking nut, and the cap body lower end of locking nut resists upper sealing ring.
Preferably, the pedestal lower face circumferentially disposed locating slot centered on axle track, the upper surface of cover be equipped with
The locating ring that the locating slot is adapted, locating ring centered on axis body circumferentially enclose setting and with cover integrally connected.
Preferably, offering axial passage and radial passage inside the axis body, the middle part of radial passage leads to axial
The lower end in road communicates, and the both ends of radial passage are offered on the side wall of axis body；The both ends of the radial passage are in upper
Between conical bearing and lower conical bearing.
Preferably, the pedestal side wall is equipped with the pressure-releasing hole communicated with axle track, pressure-releasing hole is equipped with pressure release group
Part.
The utility model uses above-mentioned technical proposal, which is related to a kind of main shaft assembly, in the main shaft assembly
Axis body is positioned by upper conical bearing and lower conical bearing, and upper conical bearing and lower conical bearing are disposed opposite to each other to bear
The load in axial two directions；Butterfly spring is equipped between lower sealing ring and lower conical bearing, butterfly spring can make lower cone axis
It holds with the space axially downwardly adjusted, improves endurance of the entire assembly for axially downwardly load.Therefore, the main shaft is total
Into the load in axial two directions can be born, and further improves the endurance for axially downwardly load.
Description of the drawings
Fig. 1 is the structure sectional view of the utility model.
Fig. 2 is the Structure explosion diagram of the utility model.
Specific embodiment
Below in conjunction with the accompanying drawings, the preferred embodiment of the utility model is described in further detail.
A kind of main shaft assembly as illustrated in fig. 1 and 2, including pedestal 1 and the main shaft being arranged on inside pedestal 12 and bearing
Component.The pedestal 1 is internally provided with axle track 11, and main shaft 2 includes the axis body 21 being threaded through in axle track 11 and is enclosed in axle track 11
Cover 22 in lower port, the lower end of axis body 21 are connect with 22 integral middle of cover.The axis body 21 is determined by bearing assembly
In axle track 11, bearing assembly includes the upper conical bearing 32 positioned by top chock 31 and by step 33 for position
The lower conical bearing 34 and the locating snap ring 35 between upper conical bearing 32 and lower conical bearing 34 of positioning.The upper circle
Cone bearing 32 and lower conical bearing 34 are disposed opposite to each other, and are set between 11 side wall of 21 side wall of axis body and axle track of lower 34 lower section of conical bearing
There is lower sealing ring 36, butterfly spring 37 is equipped between lower sealing ring 36 and lower conical bearing 34.32 top of upper conical bearing
Equipped with upper sealing ring 38, upper sealing ring 38 is positioned by locking nut 39.
Further, the locking nut 39 is set in 21 outside of axis body and is threadedly coupled with the axis body 21, upper sealing
The ring body of ring 38 is set on locking nut 39, and the cap body lower end of locking nut 39 resists upper sealing ring 38.
Further, 1 lower face of pedestal circumferentially disposed locating slot 12, upper surface of cover 22 centered on axle track 11
Equipped with the locating ring 23 being adapted with the locating slot 12, locating ring 23 circumferentially encloses setting and and cover centered on axis body 21
22 integrally connecteds.
Further, offer axial passage 24 and radial passage 25 inside the axis body 21, the middle part of radial passage with
The lower end of axial passage communicates, and the both ends of radial passage are offered on the side wall of axis body 21.The both ends of the radial passage
Portion is between upper conical bearing 32 and lower conical bearing 34.
Further, 1 side wall of pedestal is equipped with the pressure-releasing hole communicated with axle track 11, and pressure-releasing hole is discharged equipped with pressure
Component.
The utility model uses above-mentioned technical proposal, which is related to a kind of 2 assembly of main shaft, in 2 assembly of main shaft
Axis body 21 positioned by upper conical bearing 32 and lower conical bearing 34, upper conical bearing 32 and lower conical bearing 34 are disposed opposite to each other
So as to bear the load in axial two directions.Butterfly spring 37, butterfly are equipped between lower sealing ring 36 and lower conical bearing 34
Spring 37 can make lower conical bearing 34 have the space axially downwardly adjusted, improve entire assembly for axially downwardly load
Endurance.Therefore, which can bear the load in axial two directions, and further improve for axially downwardly bearing
The endurance of lotus.
Claims (5)
1. a kind of main shaft assembly, it is characterised in that：Including pedestal and it is arranged on the main shaft and bearing assembly of base interior；
The base interior is equipped with axle track, and main shaft includes the axis body being threaded through in axle track and is enclosed in axle track lower port
Cover, the lower end of axis body are connect with cover integral middle；The axis body is located in by bearing assembly in axle track, bearing assembly
Including the upper conical bearing positioned by top chock and the lower conical bearing positioned by step and in upper
Locating snap ring between conical bearing and lower conical bearing；The upper conical bearing and lower conical bearing are disposed opposite to each other, lower cone axis
It holds and lower sealing ring is equipped between the axis body side wall of lower section and axle track side wall, butterfly bullet is equipped between lower sealing ring and lower conical bearing
Spring；Upper sealing ring is equipped with above the upper conical bearing, upper sealing ring is positioned by locking nut.
2. a kind of main shaft assembly according to claim 1, it is characterised in that：The locking nut is set on the outside of axis body simultaneously
It is threadedly coupled with the axis body, the ring body of upper sealing ring is set on locking nut, and the cap body lower end of locking nut resists close
Seal ring.
3. a kind of main shaft assembly according to claim 2, it is characterised in that：The pedestal lower face is all centered on axle track
To setting locating slot, the upper surface of cover is equipped with the locating ring being adapted with the locating slot, and locating ring is all centered on axis body
To enclose setting and with cover integrally connected.
4. a kind of main shaft assembly according to claims 1 or 2 or 3, it is characterised in that：Axial direction is offered inside the axis body
Channel and radial passage, the middle part of radial passage are communicated with the lower end of axial passage, and the both ends of radial passage offer axis
On the side wall of body；The both ends of the radial passage are between upper conical bearing and lower conical bearing.
5. a kind of main shaft assembly according to claim 1, it is characterised in that：The pedestal side wall is equipped with and is communicated with axle track
Pressure-releasing hole, pressure-releasing hole be equipped with pressure discharge component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721457881.5U CN207548290U (en) | 2017-11-03 | 2017-11-03 | A kind of main shaft assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721457881.5U CN207548290U (en) | 2017-11-03 | 2017-11-03 | A kind of main shaft assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207548290U true CN207548290U (en) | 2018-06-29 |
Family
ID=62681829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721457881.5U Expired - Fee Related CN207548290U (en) | 2017-11-03 | 2017-11-03 | A kind of main shaft assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207548290U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404424A (en) * | 2018-11-07 | 2019-03-01 | 浙江新昌皮尔轴承有限公司 | A kind of Trinity bearing assembling structure |
-
2017
- 2017-11-03 CN CN201721457881.5U patent/CN207548290U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404424A (en) * | 2018-11-07 | 2019-03-01 | 浙江新昌皮尔轴承有限公司 | A kind of Trinity bearing assembling structure |
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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: 20180629 Termination date: 20201103 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |