CN209557498U - A kind of integrated bearing assembly of Miniature ball lead screw - Google Patents
A kind of integrated bearing assembly of Miniature ball lead screw Download PDFInfo
- Publication number
- CN209557498U CN209557498U CN201821970962.XU CN201821970962U CN209557498U CN 209557498 U CN209557498 U CN 209557498U CN 201821970962 U CN201821970962 U CN 201821970962U CN 209557498 U CN209557498 U CN 209557498U
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- Prior art keywords
- lead screw
- screw
- bearing
- ball
- inner race
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Abstract
The utility model relates to a kind of Miniature ball lead screws to integrate bearing assembly, including screw (101) and lead screw (102), screw (101) rotary motion is changed into lead screw (102) linear motion for rolling element with lead screw steel ball (106) between screw (101) and lead screw (102), it is characterized by also including bearings, the bearing includes bearing outer ring (104) and bearing inner race, and the bearing inner race and the screw (101) become one part.The utility model bearing inner race and screw are integrated, and compared with prior art bearing is interference fitted indentation screw, axial displacement occurs for bearing inner race when ball-screw subtask is not present, to improve the service life and precision of ball screw assembly,.
Description
Technical field
The utility model relates to a kind of bearings, integrate bearing assembly more particularly, to a kind of Miniature ball lead screw.
Background technique
Ball screw assembly, has obtained extensively in major manufacturing at present since its transmission efficiency is high, transmission invertibity
General application, it is inseparable with our life.But with progress of the epoch, the development of science and technology, traditional ball wire
Thick stick pair is no longer satisfied all demands.
There are following technical problems in conjunction with bearing for traditional ball screw assembly:
(1) when the screw rod of conventional ball lead screw pair is connect with bearing inner race, there are bearing inner races when ball-screw subtask
Axial displacement occurs, to influence the service life and precision of ball screw assembly,.
(2) conventional ball lead screw pair itself does not have self-locking function.
(3) conventional ball lead screw pair be easy to cause steel-ball collision and making an uproar for generating due to ball return and screw clearance fit
Mail topic.As shown in Figure 1, conventional ball lead screw ball return and screw are separate types, ball return 301 is put into 302 in screw slot,
Steel ball is set to do shuttling movement inside screw, due to being separate device, there are steps for two components, this is ball screw assembly noise
One of main reason.
Therefore the growth requirement to adapt to high-performance ball screw assembly, it is necessary to develop a kind of novel ball screw assembly,.
Utility model content
The technical issues of the utility model devises a kind of integrated bearing assembly of Miniature ball lead screw, solves is: (1) passing
When the screw rod of system ball screw assembly, is connect with bearing inner race, there are bearing inner races when ball-screw subtask, and axial displacement occurs,
To influence the service life and precision of ball screw assembly,.(2) conventional ball lead screw pair itself does not have self-locking function.
(3) conventional ball lead screw pair is due to ball return and screw clearance fit, be easy to cause steel-ball collision and the noise problem that generates.
In order to solve above-mentioned technical problem, the utility model uses following scheme:
A kind of integrated bearing assembly of Miniature ball lead screw, including screw (101) and lead screw (102), in screw (101) and silk
Screw (101) rotary motion is changed into lead screw (102) linear motion for rolling element with lead screw steel ball (106) between thick stick (102),
It is characterized in that: further including bearing, the bearing includes bearing outer ring (104) and bearing inner race, the bearing inner race and the silk
Female (101) become one part.
Further, bearing steel ball (108) and sealing ring are equipped between the bearing outer ring (104) and the bearing inner race
(107), the bearing steel ball (108) by retainer (105) be fixed on the bearing outer ring (104) and the bearing inner race it
Between.
Further, locating snap ring (103) are installed in the lead screw (102) end, by the locating snap ring (103) stop from
And realize the limit of lead screw (102) linear motion.
Further, the locating snap ring (103) and the lead screw (102) carry out biplane limit cooperation: the lead screw (102)
End is axially equipped with the first plane, and lead screw (102) end is along being radially provided with the second plane；The locating snap ring
(103) cooperation of axial inner wall plane and first plane is limited, the longitudinal end plane of the locating snap ring (103) with
The cooperation of second plane is limited.
Further, the circular sliding slopes portion between the locating snap ring (103) and the lead screw (102) is interference fit.
Further, lead screw keyway (201) are equipped in the end of screw rod (102), silk is prevented by the lead screw keyway (201)
Thick stick (102) rotation, to realize lead screw straight-line.
Further, the return of serve mechanism (303) of screw rod (102) and screw (101) are integrated, and screw rod (102) surface is formed
One curve (304), return of serve mechanism (303) and the curve (304) form the space curve of return of serve mechanism (303),
To reduce the noise of ball screw assembly, the fluency of ball screw assembly, is improved.
The Miniature ball lead screw integrates bearing assembly compared with existing Miniature ball lead screw integrates bearing assembly, has following
The utility model has the advantages that
(1) the utility model bearing inner race and screw are integrated, compared with prior art bearing is interference fitted indentation screw, no
There are bearing inner races when ball-screw subtask, and axial displacement occurs, to improve the service life and essence of ball screw assembly,
Degree.
(2) the utility model plays the braking function of ball screw assembly, by locating snap ring, and locating snap ring and lead screw shaft used
Cooperation of being full of prevents locating snap ring because torque generates rotation, using double flat when locating snap ring and screw collision generation torque by plane
Face and double stop reduce stop Zernike annular polynomial and concentrate, and prevent stress from concentrating and damaging.
(3) the utility model is that screw rotation driving is converted into lead screw straight-line, to prevent from driving silk because screw rotates
Thick stick rotation prevents lead screw from rotating, to realize lead screw straight-line by lead screw keyway.
(4) the utility model the utility model uses special processing process: ball return is integrated with screw, to reduce
The noise of ball screw assembly, the fluency for improving ball screw assembly,.
Detailed description of the invention
Fig. 1: position view is arranged in ball return in the prior art；
Fig. 2: the utility model Miniature ball lead screw integrates the axial sectional view of bearing assembly；
Fig. 3: the utility model Miniature ball lead screw integrates the axially outer schematic diagram of bearing assembly；
Fig. 4: the utility model Miniature ball lead screw integrates the radial component schematic diagram of bearing assembly；
Fig. 5: position view is arranged in the mechanism that returns serve in the utility model；
Fig. 6: the track schematic diagram for the mechanism that returns serve in the utility model.
Description of symbols:
101- screw；102- lead screw；103- locating snap ring；104- bearing outer ring；105- retainer；106- lead screw steel ball；
107- sealing ring；108- bearing steel ball；201- lead screw keyway；301- ball return；In 302- screw slot；303- return of serve mechanism；
304- curve.
Specific embodiment
Below with reference to Fig. 2 to Fig. 6, the utility model is described further:
As shown in figs 2-4, a kind of Miniature ball lead screw integrates bearing assembly, including screw 101 and lead screw 102, in silk
The straight line that 101 rotary motion of screw is changed into lead screw 102 is transported for rolling element with lead screw steel ball 106 between mother 101 and lead screw 102
It is dynamic.It further include bearing, bearing includes bearing outer ring 104 and bearing inner race, and bearing is equipped between bearing outer ring 104 and bearing inner race
Steel ball 108 and sealing ring 107, bearing steel ball 108 are fixed between bearing outer ring 104 and bearing inner race by retainer 105.Axis
It holds inner ring and screw 101 becomes one part.Above-mentioned bearing inner race and screw are integrated, are interference fitted and are pressed into prior art bearing
Screw is compared, and axial displacement occurs for bearing inner race when ball-screw subtask is not present, to improve making for ball screw assembly,
With service life and precision.
It is equipped with lead screw keyway 201 in the end of screw rod 102, prevents lead screw 102 from rotating by lead screw keyway 201, thus real
Existing lead screw straight-line.
Locating snap ring 103 is installed in 102 end of lead screw, realizes that lead screw 102 moves along a straight line by 103 stop of locating snap ring
Limit.Locating snap ring 103 and lead screw 102 carry out biplane limit and cooperate: 102 end of lead screw is axially equipped with the first plane,
102 end of lead screw is along being radially provided with the second plane；The axial inner wall plane of the locating snap ring 103 and the cooperation of the first plane carry out
Limit, longitudinal end plane and the cooperation of the second plane of locating snap ring 103 are limited.Circle between locating snap ring 103 and lead screw 102
Arc interconnecting piece is interference fit.
The braking function of ball screw assembly, is played above by locating snap ring, locating snap ring and lead screw shaft, which use, to be interference fitted, when
It when locating snap ring is with screw collision generation torque, prevents locating snap ring because torque generates rotation by plane, is stopped using biplane with double
The dynamic stop Zernike annular polynomial that reduces is concentrated, and prevents stress from concentrating and damaging.
As shown in Figure 5 to Figure 6, the return of serve mechanism 303 of screw rod 102 and screw 101 are integrated, and 102 surface of screw rod is formed
One curve 304, the mechanism 303 that returns serve and curve 304 form the space curve of a return of serve mechanism 303, to reduce ball wire
The noise of thick stick pair, improves the fluency of ball screw assembly,.
It can be seen that the utility model makes ball return and screw integral type using special processing process, with traditional mechanism
Comparison, the utility model return of serve mechanism 303 keeps the fluency of ball screw assembly, more preferable, and reduces making an uproar for ball screw assembly,
Sound.The return of serve mechanism path of ball screw assembly, is a space curve, and in conjunction with Fig. 5 and Fig. 6, you can get it that a space curve is
For the space tracking for the mechanism that returns serve.
Illustrative description has been carried out to the utility model above in conjunction with attached drawing, it is clear that the realization of the utility model not by
The limitation of aforesaid way, if the method concept of the utility model and the various improvement of technical solution progress are used, or without
It improves and the conception and technical scheme of the utility model is directly applied into other occasions, in the protection scope of the utility model
It is interior.
Claims (7)
1. a kind of Miniature ball lead screw integrates bearing assembly, including screw (101) and lead screw (102), in screw (101) and lead screw
(102) screw (101) rotary motion is changed into lead screw (102) linear motion for rolling element with lead screw steel ball (106) between, it is special
Sign is: further including bearing, the bearing includes bearing outer ring (104) and bearing inner race, the bearing inner race and the screw
(101) become one part.
2. Miniature ball lead screw integrates bearing assembly according to claim 1, it is characterised in that: the bearing outer ring (104)
Bearing steel ball (108) and sealing ring (107) are equipped between the bearing inner race, the bearing steel ball (108) passes through retainer
(105) it is fixed between the bearing outer ring (104) and the bearing inner race.
3. Miniature ball lead screw according to claim 1 or claim 2 integrates bearing assembly, it is characterised in that: in the lead screw (102)
End is equipped with locating snap ring (103), and the limit of lead screw (102) linear motion is realized by the locating snap ring (103) stop.
4. according to claim 3 Miniature ball lead screw integrate bearing assembly, it is characterised in that: the locating snap ring (103) with
The lead screw (102) carries out biplane limit cooperation: lead screw (102) end is axially equipped with the first plane, the silk
Thick stick (102) end is along being radially provided with the second plane；The axial inner wall plane of the locating snap ring (103) is matched with first plane
Conjunction is limited, and longitudinal end plane and the cooperation of the second plane of the locating snap ring (103) are limited.
5. according to claim 4 Miniature ball lead screw integrate bearing assembly, it is characterised in that: the locating snap ring (103) with
Circular sliding slopes portion between the lead screw (102) is interference fit.
6. Miniature ball lead screw described in any one of -2 integrates bearing assembly according to claim 1, it is characterised in that: in lead screw
(102) end is equipped with lead screw keyway (201), prevents lead screw (102) from rotating by the lead screw keyway (201), to realize
Lead screw straight-line.
7. Miniature ball lead screw described in any one of -2 integrates bearing assembly according to claim 1, it is characterised in that: lead screw
(102) return of serve mechanism (303) and screw (101) is integrated, and lead screw (102) surface forms a curve (304), the return of serve
Mechanism (303) and the curve (304) form the space curve of return of serve mechanism (303), to reduce ball screw assembly,
Noise, improve the fluency of ball screw assembly,.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821970962.XU CN209557498U (en) | 2018-11-27 | 2018-11-27 | A kind of integrated bearing assembly of Miniature ball lead screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821970962.XU CN209557498U (en) | 2018-11-27 | 2018-11-27 | A kind of integrated bearing assembly of Miniature ball lead screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209557498U true CN209557498U (en) | 2019-10-29 |
Family
ID=68299487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821970962.XU Active CN209557498U (en) | 2018-11-27 | 2018-11-27 | A kind of integrated bearing assembly of Miniature ball lead screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209557498U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611453A (en) * | 2018-11-27 | 2019-04-12 | 慈兴集团有限公司 | A kind of integrated bearing assembly of Miniature ball lead screw |
-
2018
- 2018-11-27 CN CN201821970962.XU patent/CN209557498U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611453A (en) * | 2018-11-27 | 2019-04-12 | 慈兴集团有限公司 | A kind of integrated bearing assembly of Miniature ball lead screw |
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