CN204387126U - A kind of pre-pressing structure of ball bearing electro spindle - Google Patents
A kind of pre-pressing structure of ball bearing electro spindle Download PDFInfo
- Publication number
- CN204387126U CN204387126U CN201420850477.4U CN201420850477U CN204387126U CN 204387126 U CN204387126 U CN 204387126U CN 201420850477 U CN201420850477 U CN 201420850477U CN 204387126 U CN204387126 U CN 204387126U
- Authority
- CN
- China
- Prior art keywords
- bearing
- end surface
- rotating shaft
- movable part
- pressing structure
- 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.)
- Active
Links
Landscapes
- Mounting Of Bearings Or Others (AREA)
Abstract
A kind of pre-pressing structure of ball bearing electro spindle, comprise bearing support, the cross-under rotating shaft in bearing support and bearing rotating shaft be articulated in bearing support, rotating shaft outer surface offers a circle groove, is provided with shaft block ring in groove, and the part that shaft block ring protrudes from groove forms jut; Rotating shaft outer surface is movably installed with movable part, movable part is provided with the bayonet socket for jut clamping, also offers some tapped holes in movable part, is bolted with the screw for pushing up pressure bearing inner race upper-end surface downwards in tapped hole; Rotating shaft is also provided with one for the step surface of spring bearing inner ring lower end surface, bearing inner race is clamped between screw lower end surface and step surface.The purpose of this utility model is the pre-pressing structure providing a kind of ball bearing electro spindle, makes bearing pre-tightened without the need to separately establishing spring, strengthens spindle operation rigidity.
Description
Technical field
The utility model relates to field of machining, is specifically related to a kind of pre-pressing structure of ball bearing electro spindle.
Background technique
The existing pre-pressing structure applying to ball bearing electro spindle, generally be bearing pre-tightened by the spring be arranged on bearing support, in the course of the work, easily there is the situation that pretension lost efficacy, in addition, be installed on spring in bearing support owing to having elasticity, often make main shaft rigidity inadequate, affect the running accuracy of main shaft.
Model utility content
For the deficiencies in the prior art, the purpose of this utility model is the pre-pressing structure providing a kind of ball bearing electro spindle, makes bearing pre-tightened without the need to separately establishing spring, strengthens spindle operation rigidity.
For achieving the above object, the utility model adopts following technological scheme:
A kind of pre-pressing structure of ball bearing electro spindle, comprise bearing support, the cross-under rotating shaft in bearing support and bearing rotating shaft be articulated in bearing support, rotating shaft outer surface offers a circle groove, is provided with shaft block ring in groove, and the part that shaft block ring protrudes from groove forms jut; Rotating shaft outer surface is movably installed with movable part, movable part is provided with the bayonet socket for jut clamping, also offers some tapped holes in movable part, is bolted with the screw for pushing up pressure bearing inner race upper-end surface downwards in tapped hole; Rotating shaft is also provided with one for the step surface of spring bearing inner ring lower end surface, bearing inner race is clamped between screw lower end surface and step surface.
Preferably, bearing upper end is provided with top downwards and is pressed on the bearing gland of bearing inner race upper-end surface, and screw is resisted against bearing gland upper-end surface.
Preferably, be provided with upper bearing (metal) and lower bearing in bearing support, bearing gland is arranged at the upper-end surface of upper bearing (metal) inner ring.
Preferably, rotating shaft is also arranged with spacer, the upper-end surface forming station terrace of spacer, the lower end surface of spacer is connected to the upper-end surface of lower bearing.
The beneficial effects of the utility model are:
Compared to prior art, the pre-pressing structure of ball bearing electro spindle of the present utility model, simply adopts the cooperation of shaft block ring, movable part and screw, makes bearing pre-tightened, and structure is simple, and fabricating cost is low, and pretensioning effect is good; In addition, the some tapped holes offered in movable part conveniently regulate pretightening force with coordinating of screw, meet actual processing demand.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is A place enlarged diagram in Fig. 1.
Reference character: 10, rotating shaft; 11, shaft block ring; 20, upper bearing (metal); 30, lower bearing; 40, bearing support; 50, bearing gland; 60, spacer; 70, movable part; 71, screw.
Embodiment
Below, by reference to the accompanying drawings and embodiment, the utility model is described further:
The pre-pressing structure of a kind of ball bearing electro spindle as shown in Figure 1-2, comprises bearing support 40, rotating shaft 10, bearing.Rotating shaft 10 cross-under is in bearing support 40, bearing is used for rotating shaft 10 to be articulated in bearing support 40, and rotating shaft 10 outer surface offers a circle groove, is provided with shaft block ring 11 in groove, shaft block ring 11 can strengthen the radial rigidity of rotating shaft, and the part protruding from groove at shaft block ring 11 forms jut; Rotating shaft 10 outer surface is movably installed with movable part 70, movable part 70 is provided with the bayonet socket for jut clamping, and jut moves upward for restraint part 70 herein.Movable part 70 also offers some tapped holes, being bolted with the screw 71 for pushing up pressure bearing inner race upper-end surface downwards in tapped hole, moving upward for preventing bearing inner race.Rotating shaft 10 is also provided with one for the step surface of spring bearing inner ring lower end surface, between the lower end surface that bearing inner race is clamped in screw 71 and step surface, makes whole bearing pre-tightened produce pretension.In practical operation, when being only provided with a bearing, step surface specifically can be the shaft shoulder that is arranged in rotating shaft 10 thus reaches the effect of spring bearing inner ring lower surface; Certainly, when being provided with multiple bearing, the spacer be provided with between bearing also can play the effect of step surface.In addition, regulate by the pretightening force of screw to bearing inner race of the varying number that is spirally connected in the tapped hole that is provided with on movable part in this device, also adjustment screw 71 reaches with the relative position of movable part 70 effect regulating pretightening force simultaneously.
Preferably, bearing upper end is provided with top downwards and is pressed on the bearing gland 50 of bearing inner race upper-end surface, screw 71 is connected to bearing gland 50 upper-end surface, and the setting of bearing gland 50 makes the stressed more even of the upper-end surface of whole bearing inner race, and the pretensioning effect played is better.
Preferably, upper bearing (metal) 20 and lower bearing 30 is provided with in bearing support, bearing gland 50 is arranged at the upper-end surface of upper bearing (metal) 20 inner ring, lower bearing 30 is fixed in bearing support 40 and adopts upper and lower two bearings to make the running effect of main shaft better, in addition, by further sheathed spacer 60 between upper and lower two bearings, the lower end surface step surface being resisted against upper bearing (metal) is formed in the upper-end surface of spacer 60, the lower end surface of spacer 60 is connected to the upper-end surface of lower bearing, certainly, spacer also can strengthen the axial stiffness of upper and lower two bearings, the pretensioning effect of upper and lower two bearings is consistent.
In the present embodiment, after rotating shaft and bearing are in place, then the movable part being bolted with screw is set in rotating shaft, be rotated down screw, when screw is connected to bearing inner race upper-end surface, movable part moves up, when movable part moves up, the bayonet socket that movable part is provided with can with jut clamping, now, movable part is stuck, when continuing rotary screw, screw can be resisted against the upper-end surface of bearing inner race, now whole bearing pre-tightened.
To one skilled in the art, according to technological scheme described above and design, other various corresponding change and deformation can be made, and all these change and deformation all should belong within the protection domain of the utility model claim.
Claims (4)
1. the pre-pressing structure of a ball bearing electro spindle, comprise bearing support, the cross-under rotating shaft in bearing support and bearing rotating shaft be articulated in bearing support, it is characterized in that, rotating shaft outer surface offers a circle groove, be provided with shaft block ring in groove, the part that shaft block ring protrudes from groove forms jut; Rotating shaft outer surface is movably installed with movable part, movable part is provided with the bayonet socket for jut clamping, also offers some tapped holes in movable part, is bolted with the screw for pushing up pressure bearing inner race upper-end surface downwards in tapped hole; Rotating shaft is also provided with one for the step surface of spring bearing inner ring lower end surface, bearing inner race is clamped between screw lower end surface and step surface.
2. the pre-pressing structure of ball bearing electro spindle as claimed in claim 1, is characterized in that, bearing upper end is provided with top downwards and is pressed on the bearing gland of bearing inner race upper-end surface, and screw is resisted against bearing gland upper-end surface.
3. the pre-pressing structure of ball bearing electro spindle as claimed in claim 2, it is characterized in that, be provided with upper bearing (metal) and lower bearing in bearing support, bearing gland is arranged at the upper-end surface of upper bearing (metal) inner ring.
4. the pre-pressing structure of ball bearing electro spindle as claimed in claim 3, it is characterized in that, rotating shaft is also arranged with spacer, the upper-end surface forming station terrace of spacer, the lower end surface of spacer is connected to the upper-end surface of lower bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420850477.4U CN204387126U (en) | 2014-12-26 | 2014-12-26 | A kind of pre-pressing structure of ball bearing electro spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420850477.4U CN204387126U (en) | 2014-12-26 | 2014-12-26 | A kind of pre-pressing structure of ball bearing electro spindle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204387126U true CN204387126U (en) | 2015-06-10 |
Family
ID=53359849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420850477.4U Active CN204387126U (en) | 2014-12-26 | 2014-12-26 | A kind of pre-pressing structure of ball bearing electro spindle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204387126U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159661A (en) * | 2019-04-16 | 2019-08-23 | 深圳市速腾聚创科技有限公司 | The bearing pre-tightening structure of mechanical laser radar |
-
2014
- 2014-12-26 CN CN201420850477.4U patent/CN204387126U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159661A (en) * | 2019-04-16 | 2019-08-23 | 深圳市速腾聚创科技有限公司 | The bearing pre-tightening structure of mechanical laser radar |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204387128U (en) | Bearing pre-tightening structure | |
| CN204486588U (en) | A kind of punching machine mold with guide device | |
| CN203696522U (en) | Clamp fixture for bearing inner race machining | |
| AU2015101348A4 (en) | A bearing pressing device | |
| CN106078269A (en) | Thin slice clamping tool | |
| CN204387126U (en) | A kind of pre-pressing structure of ball bearing electro spindle | |
| CN205117988U (en) | Zanjon ball and tapered roller combination bearing | |
| CN203680136U (en) | Bearing inner ring clamp tool | |
| CN105666401A (en) | Portable O-shaped rubber ring installation tool | |
| CN203316743U (en) | Live center capable of performing axial motion | |
| CN203031238U (en) | Thruster | |
| CN203993760U (en) | Confined space bush press-fit device | |
| CN104290060A (en) | Small space socket head cap screw mounting and dismounting tool | |
| CN203144006U (en) | Mechanical jack | |
| CN203948492U (en) | A kind of stop ring assembly mould of bearing with locating snap ring | |
| CN204339332U (en) | Inclined borehole frock | |
| CN104550491A (en) | Die guide post | |
| CN204381420U (en) | A kind of Novel pull rod pre-pressing structure | |
| CN204082943U (en) | A kind of Separated type spring Die for pressing cap of pressing bearing dust cover | |
| CN204108835U (en) | A kind of trimmer of ball bearing outer ring raceway groove grinding machine is from prior-warning device | |
| CN103692246A (en) | Four-hole tapping rotary table for crankshafts | |
| CN204025893U (en) | A kind of Novel steel ball normal valve | |
| CN204025378U (en) | A kind of spherical bearing holder assembly | |
| CN204300148U (en) | A kind of axle sleeve type whirligig | |
| CN204533249U (en) | Internal connecting type rotating shaft |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |