CN203176288U - Support structure for support end of ball screw - Google Patents
Support structure for support end of ball screw Download PDFInfo
- Publication number
- CN203176288U CN203176288U CN 201320155576 CN201320155576U CN203176288U CN 203176288 U CN203176288 U CN 203176288U CN 201320155576 CN201320155576 CN 201320155576 CN 201320155576 U CN201320155576 U CN 201320155576U CN 203176288 U CN203176288 U CN 203176288U
- Authority
- CN
- China
- Prior art keywords
- bearing
- ball screw
- angular contact
- ball
- deep groove
- 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.)
- Withdrawn - After Issue
Links
Images
Abstract
The utility model discloses a support structure for the support end of a ball screw. The support structure comprises a tubular support end bearing chamber, wherein a deep groove ball bearing and an angular contact bearing are arranged in the support end bearing chamber, ball screws are arranged in inner holes of the deep groove ball bearing and the angular contact bearing, and locking screw nuts are arranged at the end parts of the ball screws. The support structure for the support end of the ball screw has the advantages that through the organic combination of the deep groove ball bearing and the angular contact bearing, the pre-stretching on the ball screws is realized for counteracting the heat expansion of the ball screws, the support rigidity of the ball screws is high, the transmission precision is high, and the cost is low, and the machine tool manufacturing and maintenance cost is reduced, so better social and economic benefits are realized.
Description
Technical field
The utility model belongs to the machining set-up technical field, relates to a kind of supporting structure of the ball screw support end for machine industry, the supporting structure of a kind of ball screw support end when particularly leading screw needs pre-stretching.
Background technique
At present, the supporting way of known lathe ball screw support end can be summarized as two kinds, a kind of supporting way that matches with angular contact bearing for angular contact bearing, this supporting way is mainly used in the fixed support of ball screw support end, can carry out pre-stretching to offset the thermal stretching of ball screw to ball screw, the support stiffness of ball screw is big, transmission accuracy is high, but the cost of support unit is higher relatively.Another kind is the deep groove ball bearing supporting way, and this supporting way can not carry out pre-stretching to offset the thermal stretching of ball screw to ball screw, and the ball screw support end can be flexible along the leading screw axis, and support stiffness and the transmission accuracy of leading screw are relatively low.
The model utility content
The purpose of this utility model provides a kind of supporting structure of ball screw support end, can make the pre-stretching ball screw to offset the ball screw thermal stretching, and the support stiffness of ball screw is big, the transmission accuracy height, and cost is low.
The technical solution of the utility model is, a kind of supporting structure of ball screw support end, comprise support end bearing chamber cylindraceous, deep groove ball bearing and angular contact bearing are installed in the support end bearing chamber, in deep groove ball bearing and the angular contact bearing endoporus ball screw is installed, the ball screw end is provided with locking nut.
Characteristics of the present utility model also are,
Wherein locking nut is positioned at a side of angular contact bearing, and deep groove ball bearing is positioned at the opposite side of angular contact bearing.
Wherein support end bearing chamber internal surface is provided with the shaft shoulder away from an end of ball screw end, and deep groove ball bearing and angular contact bearing are installed between locking nut and the shaft shoulder.
The beneficial effects of the utility model are, by organic assembling deep groove ball bearing and angular contact ball bearing, realization is carried out pre-stretching to offset the thermal stretching of ball screw to ball screw, the bearing integral supporting structure of the ball screw support end that a kind of cost that the support stiffness of ball screw is big, transmission accuracy is high is low, reduce lathe manufacturing and maintenance cost, thereby realized good social and economic benefit.
Description of drawings
Fig. 1 is the structural representation of the supporting structure of a kind of ball screw support end of the utility model.
Among the figure, 1. ball screw, 2. deep groove ball bearing, 3. angular contact bearing, 4. locking nut, 5. support end bearing chamber, the 6. shaft shoulder.
Embodiment
The utility model provides a kind of supporting structure of ball screw support end, as shown in Figure 1, comprise support end bearing chamber 5 cylindraceous, deep groove ball bearing 2 and angular contact bearing 3 are installed in the support end bearing chamber 5, ball screw 1 is installed in the endoporus of deep groove ball bearing 2 and angular contact bearing 3, and ball screw 1 end is provided with locking nut 4.
Wherein locking nut 4 is positioned at a side of angular contact bearing 3, and deep groove ball bearing 2 is positioned at the opposite side of angular contact bearing 3.Support end bearing chamber 5 internal surfaces are provided with the shaft shoulder 6 away from an end of ball screw 1 end, and deep groove ball bearing 2 and angular contact bearing 3 are installed between locking nut 4 and the shaft shoulder 6.
In Fig. 1, deep groove ball bearing 2, angular contact bearing 3 are packed in the support end bearing chamber 5 successively, and ball screw 1 support end axle journal passes deep groove ball bearing 2, angular contact bearing 3 endoporus successively, do the locking of pre-stretching amount by 4 pairs of ball screws 1 of locking nut.
If ball screw 1 thermal stretching amount is during less than the pre-stretching amount, pretension deep groove ball bearing 2, angular contact bearing 3 are tensioned on the shaft shoulder 6 of support end bearing chamber 5, support effect is the same with the compound mode of " angular contact bearing+angular contact bearing ", and the support stiffness of ball screw 1 is big, transmission accuracy is high.
If ball screw 1 thermal stretching amount is during greater than the pre-stretching amount, deep groove ball bearing 2, angular contact bearing 3 can be vacillated along ball screw 1 axial direction in support end bearing chamber 5, support effect is the same with " deep groove ball bearing ", but configured balls leading screw thermal stretching amount part of the present utility model is offset by the pre-stretching amount, still has the high characteristics of transmission accuracy.
Supporting structure of the present utility model in the support end bearing chamber 5 of ball screw 1 support end, pack into successively a deep groove ball bearing 2 and an angular contact ball bearing 3, by the locking nut 4 on the locking ball screw 1 support end axle journal, radial force is carried near the shaft shoulder 6 on the support end bearing chamber 5 in deep groove ball bearing 2 outer rings; Angular contact bearing 3 near deep groove ball bearing 2 outsides carries axial force by locking nut 4 coupling mechanism forces.The bearing outer ring of the combined support mode of this " deep groove ball bearing+angular contact ball bearing " does not have locking, and when ball screw 1 thermal stretching amount during greater than the pre-stretching amount, this combination can be flexible along ball screw 1 axis.
When being used for the leading screw support, distinguishing feature of the present utility model is:
When 1) ball screw thermal stretching amount is less than the pre-stretching amount, the compound mode of this " deep groove ball bearing+angular contact ball bearing " is behind pretension, deep groove ball bearing and angular contact bearing are tensioned on the shaft shoulder of ball screw support end bearing chamber, the support effect of this compound mode is the same with " angular contact bearing+angular contact bearing ", and the support stiffness of ball screw is big, transmission accuracy is high.
When 2) ball screw thermal stretching amount is greater than the pre-stretching amount, the combined support mode of this " deep groove ball bearing+angular contact ball bearing " can be extended along the ball screw axis, support effect is the same with " deep groove ball bearing ", but the part of the ball screw thermal stretching amount under this compound mode is offset by the pre-stretching amount, and ball screw still has the high characteristics of transmission accuracy.
3) the combined support mode of this " deep groove ball bearing+angular contact ball bearing " owing to substituted an angular contact ball bearing with a deep groove ball bearing, when, transmission accuracy big at the support stiffness that guarantees ball screw is high, makes cost significantly reduce.
The utility model is by organic assembling deep groove ball bearing and angular contact ball bearing, realization is carried out pre-stretching to offset the thermal stretching of ball screw to ball screw, the bearing integral supporting structure of the ball screw support end that a kind of cost that the support stiffness of ball screw is big, transmission accuracy is high is low, reduce lathe manufacturing and maintenance cost, thereby realized good social and economic benefit.
Claims (3)
1. the supporting structure of a ball screw support end, it is characterized in that, comprise support end bearing chamber cylindraceous (5), deep groove ball bearing (2) and angular contact bearing (3) are installed in the support end bearing chamber (5), in deep groove ball bearing (2) and angular contact bearing (3) endoporus ball screw (1) is installed, ball screw (1) end is provided with locking nut (4).
2. the supporting structure of ball screw support end according to claim 1 is characterized in that, described locking nut (4) is positioned at a side of angular contact bearing (3), and deep groove ball bearing (2) is positioned at the opposite side of angular contact bearing (3).
3. the supporting structure of ball screw support end according to claim 2, it is characterized in that, described support end bearing chamber (5) internal surface is provided with the shaft shoulder (6) away from an end of ball screw (1) end, and deep groove ball bearing (2) and angular contact bearing (3) are installed between locking nut (4) and the shaft shoulder (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320155576 CN203176288U (en) | 2013-03-29 | 2013-03-29 | Support structure for support end of ball screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320155576 CN203176288U (en) | 2013-03-29 | 2013-03-29 | Support structure for support end of ball screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203176288U true CN203176288U (en) | 2013-09-04 |
Family
ID=49072988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320155576 Withdrawn - After Issue CN203176288U (en) | 2013-03-29 | 2013-03-29 | Support structure for support end of ball screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203176288U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103158025A (en) * | 2013-03-29 | 2013-06-19 | 西安北村精密机械有限公司 | Bearing combination support structure for rolling ball lead screw support end |
-
2013
- 2013-03-29 CN CN 201320155576 patent/CN203176288U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103158025A (en) * | 2013-03-29 | 2013-06-19 | 西安北村精密机械有限公司 | Bearing combination support structure for rolling ball lead screw support end |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103158025A (en) | Bearing combination support structure for rolling ball lead screw support end | |
| CN202326756U (en) | Upper bearing base sleeve structure for rolling ball high-speed spindle | |
| CN202702011U (en) | Vertical double-end face high-precision grinding machine main shaft | |
| CN202539585U (en) | Mechanism realizing adjustable radial play for lathe spindle | |
| CN203176288U (en) | Support structure for support end of ball screw | |
| CN202343961U (en) | Electric main shaft for lathe | |
| CN102862085A (en) | Ball screw driving structure for numerically-controlled machine tool | |
| CN201824239U (en) | Deep hole grinding motorized spindle | |
| CN202225001U (en) | Adjustable screw rod bearing support device | |
| CN202639355U (en) | Strong running center | |
| CN203092326U (en) | Precision grinding head | |
| CN203067539U (en) | Novel rolling bearing structure | |
| CN202091483U (en) | Gear positioning mechanism | |
| CN101758456A (en) | Vertical dynamic/static piezoelectric main shaft | |
| CN202597477U (en) | Bearing with threads on inner ring and outer ring | |
| CN204339412U (en) | A kind of ball-screw end spring bearing configuration structure of high speed feed axle | |
| CN204321615U (en) | A kind of rotary table with multi-stage speed-reducing Multipoint Drive | |
| CN203030909U (en) | Spring pretension structure for high-speed ball electric spindle bearing | |
| CN103616747A (en) | Optical fiber slip ring structure for coupling transferring of optical fiber | |
| CN202804800U (en) | Gantry screw pretensioning device | |
| CN204308213U (en) | A kind of horizontal Machining centers main axle structure | |
| CN202251660U (en) | Integral flywheel | |
| CN201609868U (en) | Vertical dynamic-static piezoelectric main shaft | |
| CN201774356U (en) | Constant pressure preloading device for main shaft bearings of high-speed built-in motor | |
| CN202176613U (en) | Flange bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130904 Effective date of abandoning: 20160511 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |