CN212371556U - Bushing for pressing end face of three-point contact ball bearing - Google Patents
Bushing for pressing end face of three-point contact ball bearing Download PDFInfo
- Publication number
- CN212371556U CN212371556U CN202020890046.6U CN202020890046U CN212371556U CN 212371556 U CN212371556 U CN 212371556U CN 202020890046 U CN202020890046 U CN 202020890046U CN 212371556 U CN212371556 U CN 212371556U
- Authority
- CN
- China
- Prior art keywords
- bearing
- face
- bush
- bushing
- point contact
- 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
Images
Landscapes
- Rolling Contact Bearings (AREA)
Abstract
The utility model discloses a three point contact ball bearing terminal surface compresses tightly uses bush, bush (1) by erect cover (11) and turn-ups (12) are constituteed, erect cover (11) excircle and bearing hole (2 a) clearance fit, turn-ups (12) cover on bearing end face (2 b) and with bearing end face (2 b) contact. Because pinch roller (3) are pressed on bush (1), bush (1) are pressed on bearing end face (2 b), consequently pinch roller (3) can avoid oil groove (2 c) of bearing end face (2 b) and exert pressure, guarantee that bearing raceway A carries out super precision extrusion in-process, can not appear the drunkenness and influence the machining precision. The beneficial effects of the utility model are that avoided using three-jaw chuck to prop the axle sleeve inner circle and leaded to appearing the condition of circularity error, improved the yield, increased economic benefits.
Description
Technical Field
The utility model relates to a three point contact ball bearing terminal surface compresses tightly uses bush.
Background
The raceway of the ultra-precise three-point contact ball bearing needs to be ultra-precisely processed to reach high precision, so that the requirement on the service life of the bearing can be met. The method is characterized in that the rolling wheel is used for rolling the bearing end face, and the rolling wheel is used for rolling the bearing end face. However, when an oil groove is machined on the end face of the bearing, the oil groove makes the pressing wheel not always press the surface of the workpiece, and the pressing wheel may fall into the oil groove, so that the pressing end face roller of the superfinishing machine cannot be used (as shown in fig. 1), and only the three-jaw chuck is used for supporting the surface of the inner ring of the shaft sleeve to position and clamp the bearing.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned problems in the prior art, the present invention aims to provide a bushing for compressing the end surface of a three-point contact ball bearing.
The technical scheme of the utility model is that: the end face of the three-point contact ball bearing is pressed tightly by a bush, the bush consists of a vertical sleeve and a flange, the excircle of the vertical sleeve is in clearance fit with the inner hole of the bearing, the flange covers the end face of the bearing and is in contact with the end face of the bearing, and a hollow cutter is processed at the right-angle joint of the outer surfaces of the vertical sleeve and the flange. The blank cutter is circular. And an annular groove is processed on the lower surface of the flanging. The section of the annular groove is triangular.
When the pinch roller is pressed on the bushing, the bushing is pressed on the end surface of the bearing, so that the pinch roller can avoid an oil groove on the end surface of the bearing in the rotating and rolling process of the bearing, pressure is applied, and the bearing raceway is guaranteed to be subjected to ultra-precision extrusion without play so as to influence the processing precision.
In addition, a hollow cutter is machined at the right-angle joint of the outer surface of the vertical sleeve and the flanging, the hollow cutter is preferably circular, and when the bushing is under the pressure of the pressing wheel, the hollow cutter can prevent the bushing from being concentrated in stress, so that the flanging is deformed, the pressure on the end surface of the bearing is uneven, and the ultra-precision extrusion precision of the bearing raceway is influenced.
The section of the annular groove at the back of the flanging is triangular. When the flanging is under the pressure of a large pressing wheel, the annular groove can carry out stress unloading, so that the pressure is more uniformly transmitted to the bearing, and the precision of the bearing raceway after extrusion is ensured.
The beneficial effects of the utility model are that avoided using three-jaw chuck to prop the axle sleeve inner circle and lead to appearing the condition of circularity error, can use the pinch roller to compress tightly the bearing, improved the yield, increased economic benefits.
Drawings
FIG. 1 is a schematic structural diagram of a prior art bearing with oil grooves on its end faces when pressed by a pressing wheel;
FIG. 2 is a schematic view of the structure of the three-point contact ball bearing of the present invention in which the bushing for pressing the end face is mounted on the bearing;
fig. 3 is a schematic structural view of the bushing for compressing the end surface of the three-point contact ball bearing of the present invention;
fig. 4 is a partially enlarged view of portion i in fig. 3.
The labels in the figure are: the bearing comprises a bush 1, a blank cutter 1a, an annular groove 1b, a vertical sleeve 11, a flanging 12, a bearing 2, a bearing inner hole 2a, a bearing end face 2b, an oil groove 2c, a pinch roller 3 and a bearing raceway A.
Detailed Description
As shown in figures 2-3, the bushing for compressing the end face of the three-point contact ball bearing comprises a vertical sleeve 11 and a flange 12, wherein the outer circle of the vertical sleeve 11 is in clearance fit with an inner hole 2a of the bearing, and the flange 12 covers the end face 2b of the bearing and is in contact with the end face 2b of the bearing.
The vertical sleeve 11 of the bush is positioned by the inner hole 2a of the bearing, the pressing wheel 3 is pressed on the bush 1, and the flanging 12 of the bush 1 is pressed on the bearing end surface 2b, so that the pressing wheel 3 can avoid the oil groove 2c of the bearing end surface 2b to apply pressure, the bearing roller path A is guaranteed to be subjected to ultra-precision extrusion, and the processing precision is not influenced by play.
In addition, the hollow cutter 1a is machined at the right-angle joint of the outer surfaces of the vertical sleeve 11 and the flanging 12, the hollow cutter 1a is preferably circular, and when the bushing 1 is under the pressure of the pressing wheel 3, the phenomenon that the flanging 12 deforms due to stress concentration and the pressure on the bearing 2 is uneven can be avoided, so that the ultra-precision extrusion precision of the bearing raceway A is influenced.
The ring-shaped groove 1b at the back of the flanging 12 has a triangular section. The annular groove 1b can carry out stress unloading when the flanging is subjected to larger pressure of the pinch roller, so that the pressure is more uniformly transmitted to the bearing 2, and the precision of the bearing raceway A after extrusion is ensured.
The above, only be the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and all the technicians familiar with the technical field are in the technical scope of the present invention, according to the technical scheme of the present invention and the concept of the present invention equivalent replacement or change should be covered within the protection scope of the present invention.
Claims (4)
1. Three point contact ball bearing terminal surface compresses tightly uses bush, its characterized in that: the bushing (1) is composed of a vertical sleeve (11) and a flanging (12), the excircle of the vertical sleeve (11) is in clearance fit with a bearing inner hole (2 a) of the bearing (2), the flanging (12) covers the end face (2 b) of the bearing, and a clearance cutter (1 a) is machined at the right-angle joint of the outer surfaces of the vertical sleeve (11) and the flanging (12).
2. The bushing for compressing the end surface of the three-point contact ball bearing according to claim 1, wherein: the blank cutter (1 a) is circular.
3. The bushing for compressing the end surface of the three-point contact ball bearing according to claim 1, wherein: and an annular groove (1 b) is processed on the lower surface of the flanging (12).
4. The bushing for compressing the end surface of the three-point contact ball bearing according to claim 3, wherein: the section of the annular groove (1 b) is triangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020890046.6U CN212371556U (en) | 2020-05-25 | 2020-05-25 | Bushing for pressing end face of three-point contact ball bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020890046.6U CN212371556U (en) | 2020-05-25 | 2020-05-25 | Bushing for pressing end face of three-point contact ball bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212371556U true CN212371556U (en) | 2021-01-19 |
Family
ID=74178789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020890046.6U Active CN212371556U (en) | 2020-05-25 | 2020-05-25 | Bushing for pressing end face of three-point contact ball bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212371556U (en) |
-
2020
- 2020-05-25 CN CN202020890046.6U patent/CN212371556U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105690197A (en) | Method for grinding inner hole of part on horizontal lathe | |
| CN112247488A (en) | Process for ensuring precision of ring groove of disc seat sleeve nut | |
| CN212371556U (en) | Bushing for pressing end face of three-point contact ball bearing | |
| CN206154012U (en) | Accurate movable center device | |
| CN107511725B (en) | Precise movable center device | |
| CN201483310U (en) | Grinding double-ended chuck mechanism of charging roller of printer | |
| CN210938276U (en) | Centering shaft for supporting bearing inner ring during super-finishing | |
| CN202411915U (en) | Special fixture for processing external diameter surfaces of bearings | |
| CN107457649A (en) | A kind of bearing inner race chuck | |
| CN218517567U (en) | Single-wheel spinning closing-in device suitable for lathe | |
| CN114260738B (en) | High-precision thin-wall type half coupling turning tool and method | |
| CN205587973U (en) | Turning frock of slender axles | |
| CN115255838A (en) | Manufacturing process and method of threading and rolling thread rolling wheel | |
| CN212928554U (en) | Lathe spindle bearing | |
| CN204639645U (en) | Float type frock | |
| CN208514200U (en) | The control valve fine grinding conical surface follows set | |
| CN216326826U (en) | Improved generation tapered roller bearing inner race is mandrel for super smart lathe | |
| CN220944787U (en) | Headstock structure for improving grinding precision of bearing raceway | |
| CN212479888U (en) | Forged rotating shaft | |
| CN221134913U (en) | Radial and axial simultaneous rotation follow rest | |
| CN218598608U (en) | Double-row angular contact ball bearing for silicone oil clutch and processing equipment | |
| CN214921127U (en) | Fixing clamp with internal spline for grinding input gear | |
| CN216421091U (en) | Rearmounted tailstock lathe thimble structure | |
| CN219562660U (en) | Tool for processing high-precision circular ring by using internal and external circular grinding machine | |
| CN209394001U (en) | A kind of Double Tops point positioning mechanism with bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |