CN201232737Y - Adjustable pretension type ball screw - Google Patents
Adjustable pretension type ball screw Download PDFInfo
- Publication number
- CN201232737Y CN201232737Y CNU2008201163082U CN200820116308U CN201232737Y CN 201232737 Y CN201232737 Y CN 201232737Y CN U2008201163082 U CNU2008201163082 U CN U2008201163082U CN 200820116308 U CN200820116308 U CN 200820116308U CN 201232737 Y CN201232737 Y CN 201232737Y
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- CN
- China
- Prior art keywords
- adjustable
- tightening
- nut
- ball
- feed screw
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- 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
The utility model relates to an adjustable pre-tightening ballscrew pair which comprises a ballscrew, a lock ring, a shouldered ball nut, roll balls, cylindrical pins, an adjustable pre-tightening gasket, a feed screw nut, a reverser, tightening screws and a positioning key, wherein, the adjustable pre-tightening gasket is arranged between the shouldered ball nut and the feed screw nut; the end face of the shouldered ball nut connected with the adjustable pre-tightening gasket is connected with the corresponding holes of the adjustable pre-tightening gasket through two cylindrical pins phi 3; the adjustable pre-tightening gasket is connected with the ball nut through the positioning key; internal threads 2-M3 are formed on the steps of notches of the adjustable gasket; the tightening screws are screwed into the screw holes of the adjustable pre-tightening gasket. The adjustable pre-tightening gasket is adjusted through rotating the tightening screws and driving the feed screw nut to rotate during the rotation of the positioning key around a feed screw shaft through being pushed. The utility model has the advantages of simple structure, convenient adjustment of pre-tightening force, reliability, long service life and low production cost.
Description
Affiliated technical field
The utility model relates to a kind of ball screw pair of the transmission of rolling, and belongs to the mechanical transmission base components.
Background technique
At present, a kind of ball screw pair of the transmission that is applied to roll, for eliminating this leading screw because of foozle, guarantee the kinematic accuracy and the transmission performance of transmission, between the band shoulder ball nut and feed screw nut of ball screw pair, according to the actual existing error of every ball screw pair, the special configuration tightening cushion is to guarantee that a fixing pretightening force is arranged.In addition, in ball screw pair is used, owing to cause the factors such as variation of pretightening force in the load difference of being born, the use because of the friction-produced wearing and tearing, influence product performance and using effect, the user can only pull down lead screw pair, sends manufactory back to and carries out the pretension adjustment, increases the maintaining time for this reason, increase cost of production, what influence was produced normally carries out.
Summary of the invention
Can not adjust the deficiency of pretightening force voluntarily for overcoming existing ball screw pair, the utility model provides a kind of adjustable prefastening ball screw pair, when the load of this ball screw pair changes or during because of long-term work effect of attrition product precision or usability, applying unit can make ball screw pair return to original precision and usability by adjusting the elasticity of two Cock screws on the adjustable tightening cushion.
The technological scheme that its technology that solves the utility model adopts is: form adjustable prefastening ball screw pair by ball screw, seal ring, band shoulder ball nut, ball, straight pin, adjustable tightening cushion, feed screw nut, commutator, Cock screw, positioning key, seal ring (2) embeds in the seal groove of band shoulder ball nut (3) and ball nut (7), band shoulder ball nut, feed screw nut are threaded with ball screw (1), adjustable tightening cushion (6) is inserted in ball screw, and positioning key (10) embeds in the keyway of ball nut and adjustable tightening cushion.On the circumferential surface of an end face of adjustable tightening cushion, occupy symmetrical φ 3 holes of 8 angles, 15 degree, and on the step of otch, attack the 2--M3 internal thread.End face being with shoulder ball nut and adjustable tightening cushion to join bores 2 corresponding φ 3 holes, links with the corresponding hole of 2 φ 3 straight pins (5), and 2 M3 Cock screws (9) are screwed in the screw of adjustable tightening cushion M3.
The beneficial effects of the utility model are: adjustable tightening cushion exchanges general, has overcome the shortcoming of every necessary match grinding of ball screw pair tightening cushion, has saved manufacturing cost and use cost, and is user-friendly.Have simple in structurely simultaneously, pretightening force is easy to adjust, reliable, long service life, the advantage that cost of production is low.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural drawing of the present utility model
Fig. 2 is the sectional drawing of A--A
1. ball screws among the figure, 2. seal ring, 3. band shoulder ball nut, 4. ball, 5. straight pin, 6. adjustable tightening cushion, 7. feed screw nut, 8. commutator, 9. Cock screw, 10. positioning key.
Embodiment
In Fig. 1 and Fig. 2, band shoulder ball nut is screwed into ball screw, and links with adjustable tightening cushion, two closely in conjunction with the time, aim at 2--φ 3 holes, straight pin inserts and links.And after feed screw nut is screwed into ball screw, aim at two dowel holes, embed positioning key, be embedded in ball (4) and commutator in commutator (8) hole, degree of tightness according to adjustable tightening cushion is rotated Cock screw, promote the positioning key trace and move, positioning key drives the feed screw nut trace and rotates, and realizes the levelling to adjustable tightening cushion pretightening force.When the ball screw pair wearing and tearing strengthen, Cock screw promotes the positioning key trace and moves when reaching the limit of, pull down ball nut, adjustable tightening cushion, again aim at band shoulder ball nut and adjustable tightening cushion 2--φ 3 holes, the insertion straight pin links, and aims at two dowel holes again, embeds positioning key, rotate Cock screw, realize levelling adjustable tightening cushion.
Claims (3)
1, a kind of adjustable prefastening ball screw pair, form by ball screw, seal ring, band shoulder ball nut, ball, straight pin, adjustable tightening cushion, feed screw nut, commutator, Cock screw, positioning key, it is characterized in that: seal ring (2) embeds in the seal groove of band shoulder ball nut (3) and feed screw nut (7), band shoulder ball nut, feed screw nut are connected with ball screw (1), adjustable tightening cushion (6) is inserted in ball screw, positioning key (10) embeds in the keyway of feed screw nut and adjustable pad, connects feed screw nut and adjustable tightening cushion.
2, according to claims 1 described adjustable prefastening ball screw pair, it is characterized in that: on the side face of (6) end face circles of adjustable tightening cushion, be drilled with symmetrical φ 3 holes of 8 angles, 15 degree, and on the step of otch, attack the M3 internal thread, have the wide keyway of 9mm in the centre of tapped hole.
3, according to claims 1 described adjustable prefastening ball screw pair, it is characterized in that: the end face that band shoulder ball nut (3) and adjustable tightening cushion join, be drilled with 2 corresponding φ 3 holes, link with the corresponding hole of 2 φ 3 straight pins (5) with adjustable tightening cushion (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201163082U CN201232737Y (en) | 2008-05-12 | 2008-05-12 | Adjustable pretension type ball screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201163082U CN201232737Y (en) | 2008-05-12 | 2008-05-12 | Adjustable pretension type ball screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201232737Y true CN201232737Y (en) | 2009-05-06 |
Family
ID=40619116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201163082U Expired - Fee Related CN201232737Y (en) | 2008-05-12 | 2008-05-12 | Adjustable pretension type ball screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201232737Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748440A (en) * | 2012-07-03 | 2012-10-24 | 山西模范机械制造有限公司 | Lifting screw rod and nut security device of lost foam forming machine |
| CN103174811A (en) * | 2013-01-22 | 2013-06-26 | 北京工业大学 | Pretightening force fine adjusting type ball screw nut |
-
2008
- 2008-05-12 CN CNU2008201163082U patent/CN201232737Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748440A (en) * | 2012-07-03 | 2012-10-24 | 山西模范机械制造有限公司 | Lifting screw rod and nut security device of lost foam forming machine |
| CN103174811A (en) * | 2013-01-22 | 2013-06-26 | 北京工业大学 | Pretightening force fine adjusting type ball screw nut |
| CN103174811B (en) * | 2013-01-22 | 2016-05-25 | 北京工业大学 | A kind of pretightning force fine adjustment type ball-screw nut |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu Qijian Screw Manufacturing Co., Ltd. Assignor: Qidong Runze Machine Tool Accessories Co.,Ltd. Contract record no.: 2011320000855 Denomination of utility model: Adjustable pretension type ball screw Granted publication date: 20090506 License type: Exclusive License Record date: 20110621 |
|
| 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: 20090506 Termination date: 20160512 |