CN103016584A - Steel ball type spiral limiter - Google Patents
Steel ball type spiral limiter Download PDFInfo
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- CN103016584A CN103016584A CN2012105803036A CN201210580303A CN103016584A CN 103016584 A CN103016584 A CN 103016584A CN 2012105803036 A CN2012105803036 A CN 2012105803036A CN 201210580303 A CN201210580303 A CN 201210580303A CN 103016584 A CN103016584 A CN 103016584A
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- guiding groove
- steel ball
- groove
- screw rod
- spiral
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Abstract
A steel ball type spiral limiter belongs to the technical field of mechanical fastening, and comprises a screw rod, a steel ball, a guiding groove and a base, wherein a spiral groove with a circular arc-shaped section is formed in the screw rod; a groove with a circular arc-shaped section is formed in the guiding groove; the steel ball is assembled between the screw rod and the guiding groove; and the guiding groove is fixed on the base. When the screw rod is rotated, the steel ball moves up and down in the guiding groove along with the rotation of the screw rod, and when the steel ball is moved to the upper end and the lower end of the groove of the guiding groove respectively, that is, the maximum angle and the minimal angle of the limiter are reached, so that the limiting effect is achieved. The rotating angle or the rotating number of turns of the steel ball type spiral arresting gear is determined by the groove length of the guiding groove.
Description
Technical field
The present invention relates to precision optical machinery Motion Technology field, in precision optical machinery, the motion of some component if surpassed the scope of regulation, can cause damage or the work imbalance of precision optical machinery.For the movement limit of these parts within the limits prescribed, can adopt this technology.
Background technique
When design boat-carrying satellite reception platform, require the azimuth rotation angular region at 0～680 °.
For straight line motion or the corner rotational parts less than 360 °, can adopt simple structure to realize.If the corner of rotational parts is greater than 360 °, for its limit rotation within certain corner, must adopt the revolution bridle of complicated structure.The revolution bridle has spiral bridle, packing ring bridle, Gear-tappet Restraint ' Programming and worm gear bridle.
The structure of common spiral bridle as shown in Figure 1, chief component is that screw rod 1-1, nut 1-2 and two stop ring 1-3 form.Have groove on the nut 1-2, guide plate 1-4 is embedded in the groove, so nut 1-2 can only can not rotate in movement.Stop ring 1-3 is packed on the axle of screw rod 1-1 and screw rod rotates together.Two end faces of nut and stop ring respectively have a tooth.When bolt rotary, nut is done straight line motion.In case when collide in the side of the side of stop ring double wedge and nut double wedge, screw rod just can not be rotated further again, reaches the restraint effect.The relative packing ring bridle of spiral bridle, Gear-tappet Restraint ' Programming and worm gear bridle are simple in structure, and easily obtain higher precision.It can limit turn over number or minute revolution.But it is larger to rub.
In boat-carrying satellite reception platform scheme, the azimuth axis load is maximum, should reduce as far as possible the friction factor between parts, so the spiral bridle is improved, in the situation that keep characteristics simple in structure, reduces as far as possible friction factor.Originally guide plate move mode in groove is to slide, and now move mode is become means of rolling, reduces friction factor, it is identical with the steel ball cross section that the screw flight cross section changes into, be that the screw spiral trough sectional shape is circular arc, nut changes steel ball into, and guide plate changes the guiding groove that sectional shape is circular arc into.In all kinds of technical data, not yet find the spiral bridle that slide type is changed into means of rolling.
Summary of the invention
The present invention seeks to reduce friction factor realizing that the bridle function satisfies under the prerequisite of service condition, make the bridle structure simpler.Ball type spiral bridle structural drawing as shown in Figure 2.
Ball type spiral bridle is characterized in that being comprised of spiral groove type screw rod, steel ball, guiding groove, base; Be shaped with the spiral chute that the cross section is circular arc on the spiral groove type screw rod, be processed with the groove that the cross section is circular arc on the guiding groove, steel ball is assemblied between screw rod and the guiding groove, and guiding groove is fixed on the base.
Guiding groove length equates with the number of turns that bridle rotates with the ratio of the spiral chute pitch of screw rod.
When bolt rotary, steel ball is along with the rotation of screw rod moves up and down in guiding groove, and steel ball reaches the minimum and maximum angle of bridle when moving on to respectively the groove upper and lower end of guiding groove, reach the restraint effect.The present invention needn't be strict with the length of screw spiral trough, only the slot length of guiding groove is strictly determined to get final product, and guiding groove is easy to processing than screw rod.
Description of drawings
Fig. 1 is common spiral bridle structure.
Fig. 2 is that the A-A of Fig. 1 is to view.
Fig. 3 is ball type spiral bridle structure.
Fig. 4 is the plan view of Fig. 3.
Fig. 5 is the screw-rod structure schematic diagram.
Fig. 6 is the guide groove structure schematic diagram.
Fig. 7 is that the B-B of Fig. 6 is to view.
Embodiment
Shown in Fig. 3-7, ball type spiral bridle is comprised of screw rod 1, steel ball 2, guiding groove 3, base 4.Pearl is assemblied between screw rod and the guiding groove.Be processed with the spiral chute that the cross section is circular arc on the screw rod 1, be processed with the groove that the cross section is circular arc on the guiding groove 3, steel ball 2 is assemblied between screw rod and the guiding groove, and guiding groove is fixed on the base 4.Steel ball is along with the rotation of screw rod moves up and down in guiding groove, and steel ball reaches the minimum and maximum angle of bridle when moving on to respectively the groove upper and lower end of guiding groove, reach the restraint effect.The angle that ball type spiral bridle rotates or the number of turns are definite by the slot length of guiding groove, and slot length (removing diameter of the steel ball) is exactly the number of turns that bridle rotates with the ratio of the spiral chute pitch of screw rod.
The processing of screw spiral trough is adopted profile cutting tool processing, the optional coarse grade of spiral chute length tolerance.The groove of guiding groove adopts profile cutting tool to be easy to processing, and length can accurately guarantee, tolerance determines with the bridle limit accuracy, and the groove precision is by the profile cutting tool determine precision.Guiding groove is fixed on the base will enough rigidity, guarantees that screw rod can not cause larger kinematic error when motion, and guiding groove guarantees centering with screw rod fixedly the time at base, with capable of reducing friction resistance.
According to above requirement, the ball type spiral bridle that manufactures and designs has satisfied the angle of revolution requirement of boat-carrying satellite reception platform azimuth axis, and surface friction drag is less.
Claims (2)
1. ball type spiral bridle is characterized in that being comprised of spiral groove type screw rod (1), steel ball (2), guiding groove (3), base (4); Be shaped with the spiral chute that the cross section is circular arc on the spiral groove type screw rod (1), be processed with the groove that the cross section is circular arc on the guiding groove (3), steel ball (2) is assemblied between screw rod and the guiding groove (3), and guiding groove (3) is fixed on the base 4.
2. ball type spiral bridle according to claim 1 is characterized in that guiding groove (3) length equates with the number of turns that bridle rotates with the ratio of the spiral chute pitch of screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210580303.6A CN103016584B (en) | 2012-12-28 | 2012-12-28 | Steel ball type spiral limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210580303.6A CN103016584B (en) | 2012-12-28 | 2012-12-28 | Steel ball type spiral limiter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103016584A true CN103016584A (en) | 2013-04-03 |
| CN103016584B CN103016584B (en) | 2016-02-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210580303.6A Active CN103016584B (en) | 2012-12-28 | 2012-12-28 | Steel ball type spiral limiter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103016584B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016029472A1 (en) * | 2014-08-29 | 2016-03-03 | 深圳市大疆创新科技有限公司 | Rotation limiting device |
| US11459822B2 (en) | 2019-02-12 | 2022-10-04 | Hunter Douglas Inc. | Tilt-control assembly for use with an operating mechanism in an architectural-structure covering |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11141644A (en) * | 1997-11-13 | 1999-05-25 | Thk Co Ltd | Limited stroke ball screw device |
| CN2469248Y (en) * | 2001-03-27 | 2002-01-02 | 高航 | Self position limited type bearing ball screw rod pair |
| CN201193690Y (en) * | 2008-04-07 | 2009-02-11 | 全球滚珠科技股份有限公司 | Ball screw rod device |
| CN101532557A (en) * | 2008-03-13 | 2009-09-16 | 全球滚珠科技股份有限公司 | Ball screw device |
| CN202392065U (en) * | 2011-12-16 | 2012-08-22 | 西安凤城精密机械有限公司 | Nut ball screw assembly |
| CN203098705U (en) * | 2012-12-28 | 2013-07-31 | 陕西航天导航设备有限公司 | Steel ball type spiral limiter |
-
2012
- 2012-12-28 CN CN201210580303.6A patent/CN103016584B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11141644A (en) * | 1997-11-13 | 1999-05-25 | Thk Co Ltd | Limited stroke ball screw device |
| CN2469248Y (en) * | 2001-03-27 | 2002-01-02 | 高航 | Self position limited type bearing ball screw rod pair |
| CN101532557A (en) * | 2008-03-13 | 2009-09-16 | 全球滚珠科技股份有限公司 | Ball screw device |
| CN201193690Y (en) * | 2008-04-07 | 2009-02-11 | 全球滚珠科技股份有限公司 | Ball screw rod device |
| CN202392065U (en) * | 2011-12-16 | 2012-08-22 | 西安凤城精密机械有限公司 | Nut ball screw assembly |
| CN203098705U (en) * | 2012-12-28 | 2013-07-31 | 陕西航天导航设备有限公司 | Steel ball type spiral limiter |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016029472A1 (en) * | 2014-08-29 | 2016-03-03 | 深圳市大疆创新科技有限公司 | Rotation limiting device |
| CN105517649A (en) * | 2014-08-29 | 2016-04-20 | 深圳市大疆创新科技有限公司 | Rotation limiting device |
| CN105517649B (en) * | 2014-08-29 | 2018-05-11 | 深圳市大疆灵眸科技有限公司 | Rotating limit device |
| US10209733B2 (en) | 2014-08-29 | 2019-02-19 | Sz Dji Osmo Technology Co., Ltd. | Rotation limiting device |
| US11459822B2 (en) | 2019-02-12 | 2022-10-04 | Hunter Douglas Inc. | Tilt-control assembly for use with an operating mechanism in an architectural-structure covering |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103016584B (en) | 2016-02-03 |
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Effective date of registration: 20161010 Address after: 430056 hi tech park, Wuhan economic and Technological Development Zone, Hubei Patentee after: China Aerospace Times Electronics Co., Ltd. Address before: Baoji City, Shaanxi Province, 721006 West Road Weibin District No. 43 Patentee before: Shaanxi Aerospace Navigation Equipment Co., Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20171213 Address after: 721006 Baoji hi tech Development Zone, new town, science and technology, Shaanxi Patentee after: Shaanxi aerospace navigation equipment Co., Ltd. Address before: 430056 hi tech park, Wuhan economic and Technological Development Zone, Hubei Patentee before: China Aerospace Times Electronics Co., Ltd. |