CN204175898U - A kind of insertion tubular type ball screw pair - Google Patents
A kind of insertion tubular type ball screw pair Download PDFInfo
- Publication number
- CN204175898U CN204175898U CN201420361844.4U CN201420361844U CN204175898U CN 204175898 U CN204175898 U CN 204175898U CN 201420361844 U CN201420361844 U CN 201420361844U CN 204175898 U CN204175898 U CN 204175898U
- Authority
- CN
- China
- Prior art keywords
- ball
- intubate
- screw
- lead
- steel ball
- 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
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Abstract
A kind of insertion tubular type ball screw pair that the utility model provides, comprise and lead ball intubate and ball nut, lead ball intubate and connect front tongue by connecting tube and rear tongue forms, tongue makes a kind of and pipe fitting that steel ball circular movement direction tangent identical with the helix angle direction of screw channel screw thread.Ball nut has one to parallel plane with axis, be shaped with steel ball in the plane to enter and lead ball intubate or from leading tangent hole, and steel ball circular movement direction identical with screw channel thread helix angular direction when ball intubate enters ball nut, leading ball intubate inserts in the hole of ball nut, composition steel ball circulation transmission.The utility model avoids the impact caused because of turning in steel ball movement process and severs and lead ball intubate tongue and make the danger that lead screw pair is stuck, scrap, reduce noise, improve the precision stability of leading screw, achieve ball screw pair high-precision, at a high speed and high stability.
Description
Art
The utility model relates to a kind of Novel cannula ball screw pair, belongs to ball screw pair manufacturing technology field.
Background technique
For guaranteeing that intubate ball screw pair normally works, being usually equipped with in its ball nut outside and leading ball intubate, the ball in ball screw pair realizes the shuttling movement of steel ball on internal whorl track by leading ball intubate.Existing ball intubate tongue of leading adopts to install and Placement perpendicular to ball nut axial direction, there are two turning percussion movement during this mode steel ball motion, one be steel ball from ball nut screw channel enter lead ball intubate tongue time, turn to leading ball intubate perpendicular to ball nut axis by spiral motion direction; Another is turned to leading ball intubate perpendicular to ball nut axis by circular movement direction.Equally, steel ball turns to spiral motion direction and tangent direction from leading when ball intubate enters ball nut by perpendicular to ball nut axial direction, and helical pitch is more greatly that helix angle is larger, and turning is larger.Large pitch high-speed ball screw pair because of the large turning of helix angle larger, steel ball elliptical gear is large, badly influences ball screw pair motion noise, running precision and working life.
Summary of the invention
For overcoming the deficiencies in the prior art, the purpose of this utility model is to provide a kind of insertion tubular type ball screw pair, when leading ball intubate tongue and inserting ball nut, helix angle direction and the steel ball circular movement direction of its installation and screw channel screw thread are tangent, make steel ball from ball nut enter lead ball intubate or from lead ball intubate enter ball nut time without turning, avoid steel ball to lead ball intubate and ball nut impact, reduce noise, improve precision stability significantly.
The technical solution adopted in the utility model is:
A kind of insertion tubular type ball screw pair, comprise and lead ball intubate and ball nut, it is characterized in that: described ball intubate of leading connects front tongue by connecting tube and rear tongue forms, described front tongue makes a kind of with steel ball circular movement direction tangent pipe fitting identical with the helix angle direction of screw channel screw thread, described rear tongue makes when steel ball enters ball nut body and pipe fitting that the helix angle direction of screw channel screw thread is tangent with steel ball circular movement direction in opposite directions, described ball nut has one to parallel plane with axis, be shaped with steel ball in the plane to enter and lead ball intubate or from leading tangent hole, and steel ball circular movement direction identical with screw channel thread helix angular direction when ball intubate enters ball nut, leading ball intubate inserts in the hole of ball nut, composition steel ball circulation transmission.
The beneficial effects of the utility model are: avoid the impact caused because of turning in steel ball movement process and sever and lead ball intubate tongue and make the danger that lead screw pair is stuck, scrap, reduce noise, improve the precision stability of leading screw, achieve ball screw pair high-precision, at a high speed and high stability.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described.
Fig. 1 is structural drawing of the present utility model, and Fig. 2 is the structural drawing of leading ball intubate, and Fig. 3 leads ball intubate and the tangent sectional drawing of helix angle, and Fig. 4 leads the tangent sectional drawing of ball intubate and circular movement direction.
In the drawings, 1. ball screw, 2. ball nut, 3. lead ball intubate, 4. steel ball, tongue 5., tongue, 7. connecting tube 6..
Embodiment
A plane of processing and axis being parallel on the nut body of ball nut 2, aim at screw thread screw channel on this plane and process an aperture and that respectively with thread helix angular direction identical and circular movement direction tangent jack identical with front tongue 5, another screw channel is reprocessed aperture and respectively with helix angle direction identical with circular movement direction tangent jack identical with rear tongue 6.Be connected connecting tube 7, front tongue 5 and rear tongue 6 composition by helix angle direction with the requirement in circular movement direction and lead ball intubate 3, in ball nut, load steel ball 4 and ball screw 1, lead ball intubate 3 and insert in the jack of ball nut 2, namely complete product manufacturing.
Claims (2)
1. an insertion tubular type ball screw pair, comprise and lead ball intubate and ball nut, it is characterized in that: described ball intubate of leading connects front tongue by connecting tube and rear tongue forms, described ball nut has one to parallel plane with axis, is shaped with steel ball in the plane and enters and lead ball intubate or from leading tangent hole, and steel ball circular movement direction identical with screw channel thread helix angular direction when ball intubate enters ball nut.
2. a kind of insertion tubular type ball screw pair according to claim 1, it is characterized in that: described front tongue makes the tangent pipe fitting in a kind of and steel ball circular movement direction identical with the helix angle direction of screw channel screw thread, described rear tongue makes with steel ball circular movement direction tangent pipe fitting identical with the helix angle direction of screw channel screw thread when steel ball enters ball nut body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420361844.4U CN204175898U (en) | 2014-06-29 | 2014-06-29 | A kind of insertion tubular type ball screw pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420361844.4U CN204175898U (en) | 2014-06-29 | 2014-06-29 | A kind of insertion tubular type ball screw pair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204175898U true CN204175898U (en) | 2015-02-25 |
Family
ID=52564709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420361844.4U Expired - Fee Related CN204175898U (en) | 2014-06-29 | 2014-06-29 | A kind of insertion tubular type ball screw pair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204175898U (en) |
-
2014
- 2014-06-29 CN CN201420361844.4U patent/CN204175898U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150225 Termination date: 20170629 |