CN203309043U - Ball screw with adjustable gap - Google Patents
Ball screw with adjustable gap Download PDFInfo
- Publication number
- CN203309043U CN203309043U CN2013202421896U CN201320242189U CN203309043U CN 203309043 U CN203309043 U CN 203309043U CN 2013202421896 U CN2013202421896 U CN 2013202421896U CN 201320242189 U CN201320242189 U CN 201320242189U CN 203309043 U CN203309043 U CN 203309043U
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- bolt
- adjusting nut
- screw
- bearing pin
- nut
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Abstract
The utility model provides a ball screw with an adjustable gap, and belongs to the technical field of screw mechanisms. The problems such as the complex structure of the adjusting gap of an existing ball screw are solved. The ball screw with the adjustable gap comprises a mounting seat, an adjusting nut and a screw, the mounting seat is fixedly connected with a fixing nut, and the screw is in threaded connection with the fixing nut and the adjusting nut. A through hole is formed in the mounting seat, an internal thread of the through hole is connected with a first adjusting bolt, and the axis of the first adjusting bolt is perpendicular to the axis of the screw. One end of the adjusting nut is fixedly connected with a first pin roll, the end portion of the first adjusting bolt abuts against the first pin roll, and a positioning mechanism which enables the adjusting nut to be positioned is arranged between the mounting seat and the adjusting nut. According to the ball screw with the adjustable gap, due to the fact that the simple first adjusting bolt and the first pin roll are used in the mechanism for adjusting the gap, the screw does not need to be dismounted, the adjusting nut can be directly made to rotate by a certain angle through the first adjusting bolt, then the positioning mechanism is used for positioning the adjusting nut, and the structure is simple.
Description
Technical field
The utility model belongs to the screw mechanism technical field, relates to a kind of ball screw, particularly the adjustable ball screw in a kind of gap.
Background technique
Ball screw is the rotation motion of screw rod to be converted into to the straight-line desirable member of nut.Ball screw is comprised of screw rod, nut and ball.Owing to having very little surface friction drag, ball screw is widely used in various industry equipments and precision type instrument.But after long-time the use, due to the wearing and tearing of ball, between nut and screw rod, easily produce gap, affected the service precision of ball screw.
For head it off, people have carried out some improvement.For example its application number of Chinese model utility is that 201220411637.6 patent discloses the secondary lateral clearance adjusting device of a kind of power screw, it comprises and being arranged in planker, set screw nut and adjusting nut with trapezoidal screw composition one secondary power screw pair, set screw nut is fixed on planker by taper pin, the cylindrical of adjusting nut and worm screw form the Worm Wheel System pair, the end of worm screw is connected with setting sleeve, the setting sleeve both ends of the surface form Spielpassung with planker hole end surface and compression end cap respectively, compressing end cap is fixed by screws on planker, protective cover is fixed on to compress on end cap by screw thread and shields.Although this regulating device also is applicable to the adjustment of ball screw intermediate gap, because the cylindrical of its adjusting nut and worm screw form the Worm Wheel System pair, its complex structure, process comparatively loaded down with trivial detailsly, makes its manufacture cost higher.
Summary of the invention
The purpose of this utility model is to have the problems referred to above for existing technology, has proposed a kind of adjustable ball screw in gap simple in structure.
The purpose of this utility model can realize by following technical proposal:
The ball screw that a kind of gap is adjustable, comprise fitting seat, set screw nut, adjusting nut, screw rod and the ball be arranged in described set screw nut and adjusting nut, described fitting seat is connected mutually with described set screw nut, described screw rod all with described set screw nut and adjusting nut screw thread, is connected and described adjusting nut can rotate relative to described set screw nut, on described fitting seat, offer through hole one, described through hole one internal thread is connected with bolt one, it is characterized in that, the axis of described bolt one is perpendicular to the axis of described screw rod, one end of described adjusting nut is fixed with bearing pin one, the inner of described bolt one is resisted against on bearing pin one, between described fitting seat and adjusting nut, be provided with the positioning means that can make the adjusting nut location.
The axis of bearing pin one is parallel with the axis of screw rod, and the axis of bolt one is in the outside of screw rod.Bolt one also available screw replaces.On fitting seat, offer the through hole one that passes and be threaded for bolt one.After ball screw was used longer a period of time, ball produced wearing and tearing, thereby made to produce gap between screw rod and set screw nut, adjusting nut.By rotating bolt one, make adjusting nut rotate certain angle.Owing between screw rod and adjusting nut, matching by worm structure, after adjusting nut turns an angle, make screw rod produce certain axial displacement, thereby eliminate the gap between screw rod, set screw nut and adjusting nut, make again to coordinate comparatively closely between screw rod, set screw nut and adjusting nut.By positioning means, the orientation of adjusting nut is fixed again.Because the mechanism that regulates gap in this ball screw has been used bolt one and bearing pin one, its structure is comparatively simple.
In the adjustable ball screw in above-mentioned gap, described positioning means comprises bolt two and crescent moon sheet, described crescent moon sheet is the semicircle annular and is coaxial setting with described screw rod, described bolt two be arranged in parallel in the same way with bolt one, on described fitting seat, offer through hole two, described bolt two is threaded in described through hole two, described set screw nut offers near an end of adjusting nut the curve bath rotated for the crescent moon sheet, one end of described crescent moon sheet is resisted against a side of bearing pin one, the other end of described crescent moon sheet is resisted against the inner of bolt two.The inner of bolt one or bolt two refers to that end away from bolt head.The crescent moon sheet is arranged on the outside of screw rod, and bolt two and bolt one symmetry are arranged on the both sides of screw rod.On set screw nut, offering two through holes passes for bolt one and bolt two.When adjusting as required bolt one and bolt two, after adjusting nut was turned an angle, the crescent moon sheet was also around the certain angle of the corresponding rotation of its axis, then lock bolt one and bolt two, makes bolt one, bearing pin one, crescent moon sheet and bolt two lean successively.With the crescent moon sheet of bolt two and semicircle annular, by the cooperation of curve bath, locate the orientation of adjusting nut, its structure is comparatively stable.
In the adjustable ball screw in above-mentioned gap, described positioning means comprises bolt two and crescent moon sheet, described crescent moon sheet is the semicircle annular and is coaxial setting with described screw rod, described bolt two be arranged in parallel in the same way with bolt one, on described fitting seat, offer through hole two, described bolt two is threaded in described through hole two, on described fitting seat, offer the curve bath rotated for the crescent moon sheet, one end of described crescent moon sheet is resisted against a side of bearing pin one, and the other end of described crescent moon sheet is resisted against the inner of bolt two.The inner of bolt one or bolt two refers to that end away from head.Bolt two also available screw replaces.The crescent moon sheet is arranged on the outside of screw rod, and bolt two and bolt one symmetry are arranged on the both sides of screw rod.When rotating bolt one and bolt two as required, after adjusting nut was turned an angle, the crescent moon sheet was also around the certain angle of the corresponding rotation of its axis, then lock bolt one and bolt two, makes bolt one, bearing pin one, crescent moon sheet and bolt two lean successively.With the crescent moon sheet of bolt two and semicircle annular, by the cooperation of curve bath, make to locate the orientation of adjusting nut, its structure is comparatively stable.
In the adjustable ball screw in above-mentioned gap, the end that described crescent moon sheet and bearing pin one lean is provided with the groove be complementary with bearing pin one shape.One end of crescent moon sheet arranges groove, makes bearing pin one and crescent moon sheet lean comparatively stable.
In the adjustable ball screw in above-mentioned gap, described crescent moon sheet is provided with the arc convex body away from an end of bearing pin one.In the process of regulating, due to the movement direction of bolt two along its axial adjustment, during the crescent moon sheet the other end mobile, rotate around the axis of screw rod, the inner of bolt two and the crescent moon sheet the other end can produce relative displacement, the other end at the crescent moon sheet arranges the arc convex body, make can be stable between the inner of bolt two and crescent moon sheet lean.
In the adjustable ball screw in above-mentioned gap, described positioning means comprises bolt two and is connected in the bearing pin two on adjusting nut one end, described bolt two be arranged in parallel in the same way with bolt one, on described fitting seat, offer through hole two, described bolt two is threaded in through hole two, and the inner of described bolt two is resisted against on described bearing pin two.Bearing pin two is symmetricly set on the both sides of screw rod with bearing pin one centered by the axis of screw rod.When needs are eliminated the gap of ball screw, adjusting bolt one and bolt two, make adjusting nut rotate certain angle, lock bolt one and bolt two again, make to lean between bolt one and bearing pin one, lean between bearing pin two and bolt two, thereby make the adjusting nut location, eliminated the inner gap produced of ball screw.
In the adjustable ball screw in above-mentioned gap, described bearing pin one and/or bearing pin two are the integral type structure with described adjusting nut.The structure of integral type, make bearing pin one and/or bearing pin two more solid and reliable with the Placement of set screw nut like this.
In the adjustable ball screw in above-mentioned gap, described fitting seat offers near an end of adjusting nut the groove be complementary with adjusting nut, and described adjusting nut partly stretches in fitting seat.Adjusting nut partly stretches in fitting seat, makes the parts be used to regulating gap all be in fitting seat inside, pollutes thereby make these parts not be subject to external environment condition, comparatively flexible in the process of regulating.
In the adjustable ball screw in above-mentioned gap, described set screw nut and described fitting seat are the integral type structure.Structure at the inner directly processing of fitting seat set screw nut, make the assembling of this ball screw more for convenience.In addition, in the middle of set screw nut and fitting seat were split-type structural, when producing and install, owing to there being at least two tolerances, its precision was not high, has affected the use of ball screw.But set screw nut and fitting seat are set to integral structure, eliminated unnecessary error, make installation precision higher.
In the adjustable ball screw in above-mentioned gap, on described fitting seat, offer several tapped holes and/or oil hole.The devices such as supporting plate directly are arranged on fitting seat by fastening piece, and on the devices such as supporting plate, offer through hole, make adjustment means pass the device such as supporting plate and directly bolt one and bolt two are adjusted, thereby its gap adjustment more for convenience when using this ball screw.Set up oil hole, make this ball screw be convenient to oiling.
Compared with prior art, in the adjustable ball screw in this gap, because the mechanism that regulates gap in this ball screw has been used simple bolt one and bearing pin one, bearing pin one is connected in an end of adjusting nut, by bolt one, make adjusting nut rotate certain angle, re-use positioning means and make the adjusting nut location, its structure is comparatively simple.In addition, set screw nut and fitting seat are made of one to the formula structure, its precision is higher.
The accompanying drawing explanation
Fig. 1 is the explosive view of the adjustable ball screw in this gap;
Fig. 2 is the perspective view after the adjustable ball screw assembling in this gap;
Fig. 3 is the partial structurtes schematic diagram of the adjustable ball screw in this gap;
Fig. 4 is another partial structurtes schematic diagram of the adjustable ball screw in this gap;
Fig. 5 is the perspective view of the crescent moon sheet in the adjustable ball screw in this gap.
In figure, 1, screw rod; 2, set screw nut; 3, fitting seat; 4, bolt one; 5, bearing pin one; 6a, bolt two; 6b, crescent moon sheet; 7, adjusting nut; 8, ball.
Embodiment
Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
The ball screw that a kind of gap is adjustable, comprise fitting seat 3, adjusting nut 7 and screw rod 1.In fitting seat 3, be fixed with set screw nut 2, on it, offer several be used to tapped hole and/or the oil hole of the device such as supporting plate are installed.As another kind of scheme, in the structure of the interior direct processing set screw nut 2 of fitting seat 3, make fitting seat 3 and set screw nut 2 be the integral type structure.Fitting seat 3 offers near an end of adjusting nut 7 groove be complementary with adjusting nut 7, makes adjusting nut 7 parts stretch in fitting seat 3.Adjusting nut 7 can rotate relative to set screw nut 2, thus the gap of adjustment roll ballscrew.
Screw rod 1 passes fitting seat 3, set screw nut 2 and adjusting nut 7, and screw rod 1 all is threaded with set screw nut and adjusting nut, is provided with ball 8 at set screw nut and adjusting nut inside.Fitting seat 3 upsides are offered through hole one, and through hole one internal thread is connected with bolt 1.Bolt 1 can replace with screw.The axis of bolt 1 is perpendicular to the axis of screw rod 1 and be in the outside of screw rod 1, one end of adjusting nut 7 is fixed with the bearing pin 1 be arranged in parallel with screw rod 1, the inner of bolt 1 is resisted against on bearing pin 1, between fitting seat 3 and adjusting nut 7, is provided with the positioning means that can make adjusting nut 7 location.As another scheme, bearing pin 1 is the integral type structure with adjusting nut 7.
Positioning means comprises bolt two 6a, is with screw rod 1 the crescent moon sheet 6b that the semicircle annular coaxially is set.Crescent moon sheet 6b is arranged on the outside of screw rod 1, bolt two 6a and bolt one 4 cocurrent and parallel settings, fitting seat 3 upsides offer through hole two and pass and be threaded for bolt two 6a, and set screw nut 2 offers near an end of adjusting nut 7 curve bath rotated for crescent moon sheet 6b.As another kind of scheme, curve bath is opened on fitting seat.
On set screw nut 2, offer through hole one and through hole two confession bolts 1 and bolt two 6a and pass, the end of crescent moon sheet 6b is resisted against the inner of bolt 1 by bearing pin 1, and the other end of crescent moon sheet 6b is resisted against the inner of bolt two 6a.The end that crescent moon sheet 6b and bearing pin 1 lean is provided with the groove be complementary with bearing pin one 5 shapes.Crescent moon sheet 6b is provided with the arc convex body with screw rod 1 away from an end of bearing pin 1.The concrete shape of this arc convex body is the cylindricality convex body parallel with screw axis.
Now the working procedure of the present embodiment is described below:
When this ball screw is used through long-time, when the generation gap need to be eliminated, unclamp bolt one 4 bolt two 6a, now, adjusting nut 7 can rotate around its axis in interstice coverage, and crescent moon sheet 6b also turns an angle along curve bath.After adjusting nut 7 was turned an angle, lock bolt 1 and bolt two 6a, leant bolt 1, bearing pin 1, crescent moon sheet 6b and bolt two 6a successively, completes the adjusting of ball screw internal void.
As another kind of scheme, positioning means comprises bolt two 6a and is connected in the bearing pin two on adjusting nut 7 one ends, bolt two 6a and bolt one 4 cocurrent and parallel settings, offer through hole two and pass and be threaded for bolt two 6a on fitting seat 3, the inner of bolt two 6a is resisted against on bearing pin two.Bearing pin two is symmetricly set on the both sides of screw rod 1 with bearing pin 1 centered by the axis of screw rod 1, with it corresponding bolt two 6a and bolt 1 both sides that are symmetricly set on screw rod.As another scheme, bearing pin 1 and/or bearing pin two are the integral type structure with adjusting nut 7.
When using this ball screw, the devices such as supporting plate directly can be arranged on fitting seat 3 by fastening piece, and on the devices such as supporting plate, offer through hole, make adjustment means pass the device such as supporting plate and directly bolt 1 and bolt two 6a are adjusted, thereby its gap adjustment more for convenience when using this ball screw.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has more been used the terms such as screw rod 1, set screw nut 2, fitting seat 3, bolt 1, bearing pin 1, bolt two 6a, crescent moon sheet 6b, adjusting nut 7, do not get rid of the possibility of using other term.Using these terms is only in order to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.
Claims (10)
1. ball screw that gap is adjustable, comprise fitting seat (3), set screw nut (2), adjusting nut (7), screw rod (1) and be arranged on described set screw nut (2) and adjusting nut (7) in ball (8), described fitting seat (3) is connected mutually with described set screw nut (2), described screw rod (1) all with described set screw nut (2) and adjusting nut (7) screw thread, is connected and described adjusting nut (7) can rotate relative to described set screw nut (2), described fitting seat offers through hole one on (3), described through hole one internal thread is connected with bolt one (4), it is characterized in that, the axis of described bolt one (4) is perpendicular to the axis of described screw rod (1), one end of described adjusting nut (7) is fixed with bearing pin one (5), the inner of described bolt one (4) is resisted against on bearing pin one (5), between described fitting seat (3) and adjusting nut (7), be provided with the positioning means that can make adjusting nut (7) location.
2. the adjustable ball screw in gap according to claim 1, it is characterized in that, described positioning means comprises bolt two (6a) and crescent moon sheet (6b), described crescent moon sheet (6b) is the semicircle annular and is coaxial setting with described screw rod (1), described bolt two (6a) and bolt one (4) cocurrent and parallel setting, described fitting seat offers through hole two on (3), described bolt two (6a) is threaded in described through hole two, described set screw nut (2) offers near an end of adjusting nut (7) curve bath rotated for crescent moon sheet (6b), one end of described crescent moon sheet (6b) is resisted against a side of bearing pin one (5), the other end of described crescent moon sheet (6b) is resisted against the inner of bolt two (6a).
3. the adjustable ball screw in gap according to claim 1, described positioning means comprises bolt two (6a) and crescent moon sheet (6b), described crescent moon sheet (6b) is the semicircle annular and is coaxial setting with described screw rod (1), described bolt two (6a) and bolt one (4) cocurrent and parallel setting, described fitting seat offers through hole two on (3), described bolt two (6a) is threaded in described through hole two, on described fitting seat (3), offer the curve bath rotated for crescent moon sheet (6b), one end of described crescent moon sheet (6b) is resisted against a side of bearing pin one (5), the other end of described crescent moon sheet (6b) is resisted against the inner of bolt two (6a).
4. according to the adjustable ball screw in the described gap of claim 2 or 3, it is characterized in that, described crescent moon sheet (6b) is provided with the end that bearing pin one (5) leans the groove be complementary with bearing pin one (5) shape.
5. according to the adjustable ball screw in the described gap of claim 2 or 3, it is characterized in that, described crescent moon sheet (6b) is provided with the arc convex body away from an end of bearing pin one (5).
6. the adjustable ball screw in gap according to claim 1, it is characterized in that, described positioning means comprises bolt two (6a) and is connected in the bearing pin two on adjusting nut (7) one ends, described bolt two (6a) and bolt one (4) cocurrent and parallel setting, described fitting seat offers through hole two on (3), described bolt two (6a) is threaded in through hole two, and the inner of described bolt two (6a) is resisted against on described bearing pin two.
7. the adjustable ball screw in gap according to claim 6, is characterized in that, described bearing pin one (5) and/or bearing pin two are the integral type structure with described adjusting nut (7).
8. according to claim 1 or 2 or 3 or the 6 or 7 adjustable ball screws in described gap, it is characterized in that, described fitting seat (3) offers near an end of adjusting nut (7) groove be complementary with adjusting nut (7), and described adjusting nut (7) part stretches in fitting seat (3).
9. according to claim 1 or 2 or 3 or the 6 or 7 adjustable ball screws in described gap, it is characterized in that, described set screw nut (2) and described fitting seat (3) are the integral type structure.
10. according to claim 1 or 2 or 3 or the 6 or 7 adjustable ball screws in described gap, it is characterized in that, described fitting seat offers several tapped holes and/or oil hole on (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202421896U CN203309043U (en) | 2013-05-06 | 2013-05-06 | Ball screw with adjustable gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202421896U CN203309043U (en) | 2013-05-06 | 2013-05-06 | Ball screw with adjustable gap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203309043U true CN203309043U (en) | 2013-11-27 |
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ID=49615256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202421896U Expired - Lifetime CN203309043U (en) | 2013-05-06 | 2013-05-06 | Ball screw with adjustable gap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203309043U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575548A (en) * | 2017-09-22 | 2018-01-12 | 长治清华机械厂 | Servo control mechanism corner precise adjusting device |
| CN108571569A (en) * | 2018-06-06 | 2018-09-25 | 河南森源电气股份有限公司 | The chassis vehicle and leadscrew-nut mechanism of breaker |
| CN109838526A (en) * | 2019-04-11 | 2019-06-04 | 陕西理工大学 | A kind of micro- backlash eliminating equipment of bolt and nut pair |
-
2013
- 2013-05-06 CN CN2013202421896U patent/CN203309043U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575548A (en) * | 2017-09-22 | 2018-01-12 | 长治清华机械厂 | Servo control mechanism corner precise adjusting device |
| CN107575548B (en) * | 2017-09-22 | 2023-09-29 | 长治清华机械厂 | Servo mechanism corner accurate adjustment device |
| CN108571569A (en) * | 2018-06-06 | 2018-09-25 | 河南森源电气股份有限公司 | The chassis vehicle and leadscrew-nut mechanism of breaker |
| CN108571569B (en) * | 2018-06-06 | 2023-11-21 | 河南森源电气股份有限公司 | Chassis carriage and screw nut mechanism of circuit breaker |
| CN109838526A (en) * | 2019-04-11 | 2019-06-04 | 陕西理工大学 | A kind of micro- backlash eliminating equipment of bolt and nut pair |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131127 |
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| CX01 | Expiry of patent term |