CN103671471B - A kind of universal ball joint of locking function - Google Patents

A kind of universal ball joint of locking function Download PDF

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Publication number
CN103671471B
CN103671471B CN201310591327.6A CN201310591327A CN103671471B CN 103671471 B CN103671471 B CN 103671471B CN 201310591327 A CN201310591327 A CN 201310591327A CN 103671471 B CN103671471 B CN 103671471B
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Prior art keywords
deformable bulb
cover plate
take
lever
bulb
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CN103671471A (en
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李华丰
朱振宇
李强
兰一兵
张丽娟
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Beijing Changcheng Institute of Metrology and Measurement AVIC
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Beijing Changcheng Institute of Metrology and Measurement AVIC
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Abstract

The present invention relates to a kind of universal ball joint of locking function, belong to nanometer measurement technical field.The present invention includes fixed base, deformable bulb, piezoelectric micro-displacement actuator, hemisphere cover plate, take-off lever and driver control system; In the driver mounting hole of deformable bulb, piezoelectric micro-displacement actuator is installed, and making the moving direction of piezoelectric micro-displacement actuator consistent with the deformation direction of deformable bulb, deformable bulb is arranged in fixed base and hemisphere cover plate composition spherical hollow space; The rear end of take-off lever is threaded with the tapped hole of deformable bulb through hemisphere cover plate; The datawire of driver control system is through the piezoelectric micro-displacement actuator connection that datawire passing hole and the deformable bulb at take-off lever center are fixed.Universal ball joint of the present invention had both achieved the universal connection of two links, can realize again locking in the operating attitude of special angle.

Description

A kind of universal ball joint of locking function
Technical field
The present invention relates to a kind of universal ball joint of locking function, belong to nanometer measurement technical field.
Background technique
Nanometer measurement technical field, the connection of worktable and actuator is realized by flexible connecting structure.Flexible connecting structure adopts the partial structurtes rigidity reducing connected element, utilizes malformation to realize the connection of worktable and actuator.This Placement is reproducible, and stable performance among a small circle, shortcoming flexibly connects can diminish with the rigidity in linkage structure Vertical direction, namely when the stressed generation minor variations of this Vertical direction upper table, can cause worktable attitudes vibration.This attitudes vibration is unaffordable in nanometer measurement technical field.
In precision mechanical transmission technical field, frequent use universal ball joint is as the connected element of transmission portion, universal ball joint realizes relative movement by the relative sliding of bulb in ball bowl, the effect of universal ball joint can change the spatial relation releasing force mechanisms and force mechanism within the specific limits, thus the required precision reduced mutual alignment between the two, and also there is larger rigidity in the vertical direction.But, slide freely to make bulb ball bowl, inevitably there is matching gap between the two, namely bulb in ball bowl except there is necessary rotation, also there is extra translation, this translation can be born in general application, but in nanometer measurement technical field, is but a problem that must solve.
Summary of the invention
The flexible connecting structure rigidity in vertical direction that the object of the invention is to solve in nanometer measurement technology is little, causes the problem of worktable attitudes vibration, and provides a kind of universal ball joint of locking function.
The object of the invention is to be achieved through the following technical solutions:
The universal ball joint of a kind of locking function of the present invention, comprises fixed base, deformable bulb, piezoelectric micro-displacement actuator, hemisphere cover plate, take-off lever and driver control system;
Fixed base front end has hemi-spherical cavities, and the outer place of this hemi-spherical cavities extends outward connected unit;
The rear end of hemisphere cover plate is the concave spherical surface matched with fixed base hemi-spherical cavities, and the center of hemisphere cover plate has take-off lever passing hole, and the outer place of hemisphere cover plate extends outward connected unit;
Deformable bulb forms by external diameter and fixed base and hemisphere cover plate the processing of sphere that spherical hollow space matches and forms, deformable bulb center has driver mounting hole, the side inwall of the driver mounting hole of deformable bulb outwards has tapped hole, the spheroid place, another both sides of the driver mounting hole of deformable bulb is processed with soft deformation structure, makes deformable bulb threadingly there is amount of deformation in perforate direction in hole;
The center of take-off lever has datawire passing hole, and the rear end sidewall of take-off lever is processed with the thread section matched with deformable bulb upper screwed hole;
In the driver mounting hole of deformable bulb, piezoelectric micro-displacement actuator is installed, and make the moving direction of piezoelectric micro-displacement actuator consistent with the deformation direction of deformable bulb, deformable bulb is arranged in fixed base and hemisphere cover plate composition spherical hollow space, and is fixed between fixed base and hemisphere cover plate by respective connected unit screw; The rear end of take-off lever, through the take-off lever passing hole of hemisphere cover plate, is threaded with the tapped hole of the deformable bulb of its inside cavity; The datawire of driver control system is through the piezoelectric micro-displacement actuator connection that datawire passing hole and the deformable bulb at take-off lever center are fixed.
Working procedure
Deformable bulb forms spherical cavity Spielpassung with fixed base and hemisphere cover plate in a free state, and the take-off lever that deformable bulb front end is connected can be free to slide; When needs lock in certain fixed position, extended by driver control Systematical control piezoelectric micro-displacement actuator, thus making deformable bulb by pressing closer fixed base and hemisphere cover plate composition spherical cavity after soft deformation structural stretch, the operating attitude of the take-off lever that deformable bulb is connected with front end locks.
Beneficial effect
The flexible connecting structure rigidity in vertical direction that universal ball joint of the present invention solves in nanometer measurement technology is little, cause the problem of worktable attitudes vibration, both achieved the universal connection of two links, and can realize again locking in the operating attitude of special angle.The present invention can be widely used in precision mechanical transmission field and nanometer measurement technical field.
Accompanying drawing explanation
Fig. 1 is the structural representation of universal ball joint of the present invention;
Fig. 2 is the structural representation of deformable bulb in universal ball joint of the present invention;
Fig. 3 is universal ball joint free movement state schematic diagram of the present invention;
Fig. 4 is universal ball joint lock state schematic diagram of the present invention;
Wherein, 1-fixed base; 2-deformable bulb; 3-piezoelectric micro-displacement actuator; 4-hemisphere cover plate; 5-take-off lever.
Embodiment
Below in conjunction with drawings and Examples, content of the present invention is described further.
Embodiment
The universal ball joint of a kind of locking function of the present invention, as shown in Figure 1, comprises fixed base 1, deformable bulb 2, piezoelectric micro-displacement actuator 3, hemisphere cover plate 4, take-off lever 5 and driver control system;
Fixed base 1 front end has hemi-spherical cavities, and the outer place of this hemi-spherical cavities extends outward connected unit;
The rear end of hemisphere cover plate 4 is the concave spherical surface matched with fixed base 1 hemi-spherical cavities, and the center of hemisphere cover plate 4 has take-off lever passing hole, and the outer place of hemisphere cover plate 4 extends outward connected unit;
As shown in Figure 2, deformable bulb forms by external diameter and fixed base 1 and hemisphere cover plate 4 the processing of sphere that spherical hollow space matches and forms, deformable bulb center has driver mounting hole, the side inwall of the driver mounting hole of deformable bulb outwards has tapped hole, the spheroid place, another both sides of the driver mounting hole of deformable bulb is processed with the narrow groove of staggered cutting, makes deformable bulb threadingly there is amount of deformation in perforate direction in hole;
The center of take-off lever 5 has datawire passing hole, and the rear end sidewall of take-off lever 5 is processed with the thread section matched with deformable bulb upper screwed hole;
In the driver mounting hole of deformable bulb, piezoelectric micro-displacement actuator 3 is installed, and make the moving direction of piezoelectric micro-displacement actuator 3 consistent with the deformation direction of deformable bulb, deformable bulb is arranged on fixed base 1 and hemisphere cover plate 4 forms in spherical hollow space, and is fixed between fixed base 1 and hemisphere cover plate 4 by respective connected unit screw; The rear end of take-off lever 5, through the take-off lever passing hole of hemisphere cover plate 4, is threaded with the tapped hole of the deformable bulb of its inside cavity; The datawire of driver control system is through piezoelectric micro-displacement actuator 3 connection that datawire passing hole and the deformable bulb at take-off lever 5 center are fixed.
Working procedure
Deformable bulb 3 forms spherical cavity Spielpassung with fixed base 1 and hemisphere cover plate 4 in a free state, and the take-off lever 5 that deformable bulb 3 front end is connected can be free to slide, as shown in Figure 3; When needs lock in certain fixed position, extended by driver control Systematical control piezoelectric micro-displacement actuator 3, thus make deformable bulb 3 by pressing closer fixed base 1 after soft deformation structural stretch and hemisphere cover plate 4 forms spherical cavity, the operating attitude of the take-off lever 5 that deformable bulb 3 is connected with front end locks, as shown in Figure 4.

Claims (2)

1. a universal ball joint for locking function, comprises hemisphere cover plate, take-off lever, and the rear end of hemisphere cover plate is concave spherical surface, and the center of hemisphere cover plate has take-off lever passing hole, it is characterized in that: the outer place of hemisphere cover plate extends outward connected unit;
Described universal ball joint, also comprises fixed base, deformable bulb, piezoelectric micro-displacement actuator and driver control system;
Fixed base front end has hemi-spherical cavities, and the outer place of this hemi-spherical cavities extends outward connected unit;
Deformable bulb forms by external diameter and fixed base and hemisphere cover plate the processing of sphere that spherical hollow space matches and forms, deformable bulb center has driver mounting hole, the side inwall of the driver mounting hole of deformable bulb outwards has tapped hole, the spheroid place, another both sides of the driver mounting hole of deformable bulb is processed with soft deformation structure, makes deformable bulb threadingly there is amount of deformation in perforate direction in hole;
The center of take-off lever has datawire passing hole, and the rear end sidewall of take-off lever is processed with the thread section matched with deformable bulb upper screwed hole;
In the driver mounting hole of deformable bulb, piezoelectric micro-displacement actuator is installed, and make the moving direction of piezoelectric micro-displacement actuator consistent with the deformation direction of deformable bulb, deformable bulb is arranged in fixed base and hemisphere cover plate composition spherical hollow space, and is fixed between fixed base and hemisphere cover plate by respective connected unit screw; The rear end of take-off lever, through the take-off lever passing hole of hemisphere cover plate, is threaded with the tapped hole of the deformable bulb of its inside cavity; The datawire of driver control system is through the piezoelectric micro-displacement actuator connection that datawire passing hole and the deformable bulb at take-off lever center are fixed.
2. the universal ball joint of a kind of locking function as claimed in claim 1, is characterized in that: the soft deformation structure that deformable bulb is processed is the narrow groove of staggered cutting.
CN201310591327.6A 2013-11-20 2013-11-20 A kind of universal ball joint of locking function Active CN103671471B (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110220086B (en) * 2019-06-21 2025-01-07 中山宝益五金塑胶制品有限公司 A combined ball locking structure
CN110595407B (en) * 2019-10-08 2021-01-12 青岛理工大学 A mechanical micro-displacement output platform
CN112894651A (en) * 2021-01-15 2021-06-04 中国第一汽车股份有限公司 Multi-angle positioning and clamping device with double spherical structures

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1417407A (en) * 1971-12-29 1975-12-10 Tokai Trw & Co Pre-loaded ball joint
EP0198933A3 (en) * 1985-04-18 1987-08-19 J.D. Moller Optische Werke Gmbh Load retaining pivot, especially for operation microscopes and suspension therefor
DE102010041330A1 (en) * 2010-09-24 2012-03-29 Dr. Johannes Heidenhain Gmbh Optical position measuring device
CN203037374U (en) * 2012-11-23 2013-07-03 西安金和光学科技有限公司 Optical fiber temperature measuring device for cable connector

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8608398B2 (en) * 2009-06-09 2013-12-17 King Fahd University Of Petroleum And Minerals Spherical joint with internal brake
JP5508789B2 (en) * 2009-08-28 2014-06-04 エイチジーエスティーネザーランドビーブイ Head gimbal assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1417407A (en) * 1971-12-29 1975-12-10 Tokai Trw & Co Pre-loaded ball joint
EP0198933A3 (en) * 1985-04-18 1987-08-19 J.D. Moller Optische Werke Gmbh Load retaining pivot, especially for operation microscopes and suspension therefor
US4834519A (en) * 1985-04-18 1989-05-30 Lorenz Twisselmann Load-locking joint, particularly for surgery microscopes and suspension mount constructed for the same
DE102010041330A1 (en) * 2010-09-24 2012-03-29 Dr. Johannes Heidenhain Gmbh Optical position measuring device
CN203037374U (en) * 2012-11-23 2013-07-03 西安金和光学科技有限公司 Optical fiber temperature measuring device for cable connector

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