CN105041761A - Zero adjustment device for servo actuator - Google Patents
Zero adjustment device for servo actuator Download PDFInfo
- Publication number
- CN105041761A CN105041761A CN201510310140.3A CN201510310140A CN105041761A CN 105041761 A CN105041761 A CN 105041761A CN 201510310140 A CN201510310140 A CN 201510310140A CN 105041761 A CN105041761 A CN 105041761A
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- Prior art keywords
- piston rod
- nut
- hollow
- zero
- leader
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a zero adjustment device for a servo actuator. The zero adjustment device comprises a piston rod, a displacement sensor and an adjustment component, wherein the adjustment component comprises a piston rod fixing part, a guide rod nut locking part and a zero adjustment part; outer threads of the hollow piston rod fixing part are connected with inner threads of a locking nut, and then are connected with inner threads of the piston rod, so that the piston rod cannot do lateral rotation; the hollow guide rod nut locking part penetrates through the hollow part of the piston rod fixing part and is arranged in a front-end nut so as to adjust the axial movement of the front-end nut; the zero adjustment part penetrates through the hollow part of the guide rod nut locking part, and one end of the zero adjustment part is arranged in a guide rod nut to adjust the guide rod nut, so that the axial movement of the displacement sensor is further controlled. According to the zero adjustment device disclosed by the invention, during a zero adjustment process, the zero position offset of a product is effectively avoided; the frequency of repeated debugging is reduced; the delivery schedule of the product is accelerated; and the labor cost is reduced.
Description
Technical field
The present invention relates to a kind of servo actuator zeco adjuster, the zero-bit debugging being applicable to servo actuator electric displacement sensor uses.
Background technique
When servo actuator as installed displacement transducer returns to zero, sensor housing is fixed in actuator shell inner hole by joint shaft bearing, and its core assembly is then fixed on the endoporus of piston rod, moves back and forth with piston rod, realizes the measurement to linear displacement.
When servo actuator carries out needing before zero-bit adjustment to pull down locking screw nut and bolt (NAB), carry out zero-bit adjustment work.Now piston rod is in non-locking state, front end nut piston rod in rundown process is in active state, when applying moment, product piston rod can be subject to a lateral force and causes piston rod occurrence positions to offset, and returns to zero and the generation of the problem that easily causes repeatedly zero-bit to adjust in test vibration process in assembling.The case study occurred in electrical null position debug process, it is shorter that the reason that in discovery zeroing process, electrical null position is easily overproof is mainly the mechanical trip of actuator own, and corresponding displacement voltage value large (mechanical displacement and corresponding voltage value can see the following form), so easily cause electrical null position deviation in debug process.
Require that zero value is ± 10mV during servo actuator debugging zero-bit, and as can be seen from above table and debug process, when front end nut is when applying screw-down torque, when corresponding displacement amount change is similarly 0.01mm, the variable quantity of III grade of displacement is 5.45mV, much larger than the 1.5mV of I II change in displacement.
As production debugging personnel, the control size of everyone power in debug process cannot uniform requirement, and slight rotation can cause the change of electrical null position, thus causes complexity in zeroing process different.After product zeroing, in test process due to the slight jitter of jet pipe also or the reason of servovalve self performance all may cause the change of product zero-bit, thus increase zeroing work repeatedly.
Piston rod cannot ensure that in zeroing process its mechanical zero is constant to cause the basic reason of the problems referred to above to be, thus causes the increase of zeroing workload, so design the device that need increase a mechanical zero location by analysis to get final product head it off.
Summary of the invention
The technical problem to be solved in the present invention is: for overcoming the deficiencies in the prior art, proposes a kind of servo actuator zeco adjuster, to reduce product cost of labor.
Technical solution of the present invention:
A kind of servo actuator zeco adjuster, comprise piston rod, displacement transducer and adjusting part, described piston rod is hollow cylindrical configuration, displacement transducer is positioned at piston rod hollow position, its one end afterbody is fixedly connected with piston rod, the other end head is provided with the joint shaft bearing that can make displacement transducer generation lateral rotation, the internal thread of the leader nut be connected with displacement transducer is connected with the outside thread of joint shaft bearing, the outside thread of leader nut is connected with the internal thread of piston rod is supporting, for moving axially of adjusted position displacement sensor; Internal thread for the outside thread with piston rod that control the front end nut that leader nut moves axially is supporting to be connected;
Adjusting part comprises piston rod fixed block, leader nut locking element, zero-bit adjusting element, and the piston rod fixed block outside thread of inner hollow is connected with locking nut internal thread, then is connected with piston rod internal thread, makes piston rod lateral rotation not occur; The leader nut locking element of hollow passes the hollow position of piston rod fixed block and is placed in front end nut, to adjust moving axially of front end nut; Zero-bit adjusting element is through the hollow space of leader nut locking element, and its one end is placed in leader nut for adjusting leader nut, and then the moving axially of command displacement sensor.
When the electrical null position of displacement transducer is in-10 ~+10mV scope, apply 15-25Nm screw-down torque to leader nut locking element, locking front end nut, makes displacement transducer not move axially.
The present invention's advantage is compared with prior art:
(1) the present invention is in zero-bit adjustment process, guarantee the accuracy of product mechanical zero, namely ensure locked piston rod, the order of accuarcy of displacement transducer electrical null position can be ensured at applying screw-down torque, effectively prevent the skew of product null positions, decrease and repeatedly debug number of times, accelerate product delivery progress;
(2) by present invention effectively prevents owing to repeatedly producing, the increasing of retest and process flow arrangement and the cost of labor that causes.
Accompanying drawing explanation
Fig. 1 is displacement transducer scheme of installation of the present invention;
Fig. 2 is package assembly schematic diagram of the present invention;
Fig. 3 is that the present invention splits structural representation.
Embodiment
Describe the present invention below in conjunction with drawings and the specific embodiments.
A kind of servo actuator zeco adjuster, as Fig. 1, shown in 2, comprise piston rod 1, displacement transducer 2 and adjusting part, described piston rod 1 is hollow cylindrical configuration, displacement transducer 2 is positioned at piston rod 1 hollow position, its one end afterbody is fixedly connected with piston rod 1, the other end head is provided with the joint shaft bearing that can make displacement transducer 2 that lateral rotation occurs, the internal thread of leader nut 3 be connected with displacement transducer 2 is connected with the outside thread of joint shaft bearing, the outside thread of leader nut 3 is connected with the internal thread of piston rod 1 is supporting, for moving axially of adjusted position displacement sensor 2, outside thread for controlling the front end nut 4 that leader nut 3 moves axially is connected with the internal thread of piston rod 1 is supporting,
Adjusting part comprises piston rod fixed block 6, leader nut locking element 7, zero-bit adjusting element 8, and piston rod fixed block 6 outside thread of inner hollow is connected with locking nut 5 internal thread, then is connected with piston rod 1 internal thread, makes piston rod 1 lateral rotation not occur; The leader nut locking element 7 of hollow passes the hollow position of piston rod fixed block 6 and is placed in front end nut 4, to adjust moving axially of front end nut 4; Zero-bit adjusting element 8 is through the hollow space of leader nut locking element 7, and its one end is placed in leader nut 3 for adjusting leader nut 3, and then the moving axially of command displacement sensor 2.
In adjustment process, need preferential use piston rod fixed block 6, and tighten locking nut 5 and make it fix locked by piston rod 1, then leader nut locking element 7 and front end nut 4 is utilized to assemble, secondly four square holes of zero-bit adjusting element 8 through leader nut locking element 7 and in guide rod place are docked, regulate zero-bit.When zero-bit is adjusted in-10 ~+10mV scope, because piston rod is in locking state, 20Nm screw-down torque is applied to leader nut locking element 7, make front end nut locked, ensure that displacement transducer no longer moves axially.Finally, remove zero-bit adjusting element 8, leader nut locking element 7 and piston rod fixed block 6 successively, zero-bit adjustment is complete.The assembling of zeco adjuster assembly and fractionation are as shown in Figure 2 and Figure 3.
The unexposed content of the present invention is known to the skilled person general knowledge.
Claims (2)
1. a servo actuator zeco adjuster, it is characterized in that, comprise piston rod (1), displacement transducer (2) and adjusting part, described piston rod (1) is hollow cylindrical configuration, displacement transducer (2) is positioned at piston rod (1) hollow position, its one end afterbody is fixedly connected with piston rod (1), the other end head is provided with the joint shaft bearing that can make displacement transducer (2) that lateral rotation occurs, the internal thread of the leader nut (3) be connected with displacement transducer (2) is connected with the outside thread of joint shaft bearing, the outside thread of leader nut (3) is connected with the internal thread of piston rod (1) is supporting, for moving axially of adjusted position displacement sensor (2), outside thread for controlling the front end nut (4) that leader nut (3) moves axially is connected with the internal thread of piston rod (1) is supporting,
Adjusting part comprises piston rod fixed block (6), leader nut locking element (7), zero-bit adjusting element (8), piston rod fixed block (6) outside thread of inner hollow is connected with locking nut (5) internal thread, be connected with piston rod (1) internal thread again, make piston rod (1) lateral rotation not occur; The leader nut locking element (7) of hollow through piston rod fixed block (6) hollow position and be placed in front end nut (4), to adjust moving axially of front end nut (4); Zero-bit adjusting element (8) is through the hollow space of leader nut locking element (7), its one end is placed in leader nut (3) for adjusting leader nut (3), and then the moving axially of command displacement sensor (2).
2. a kind of servo actuator zeco adjuster as claimed in claim 1, it is characterized in that, when the electrical null position of displacement transducer (2) is in-10 ~+10mV scope, 15-25Nm screw-down torque is applied to leader nut locking element (7), locking front end nut (4), makes displacement transducer (2) not move axially.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510310140.3A CN105041761B (en) | 2015-06-08 | 2015-06-08 | Zero adjustment device for servo actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510310140.3A CN105041761B (en) | 2015-06-08 | 2015-06-08 | Zero adjustment device for servo actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105041761A true CN105041761A (en) | 2015-11-11 |
| CN105041761B CN105041761B (en) | 2017-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510310140.3A Active CN105041761B (en) | 2015-06-08 | 2015-06-08 | Zero adjustment device for servo actuator |
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| CN (1) | CN105041761B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546175A (en) * | 2015-12-21 | 2016-05-04 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Connection structure of four-redundancy sensor and servo valve body, and zero position adjustment method |
| CN106524884A (en) * | 2016-09-27 | 2017-03-22 | 北京精密机电控制设备研究所 | Zero adjustment device and zero adjustment method for servo mechanism |
| CN109211165A (en) * | 2018-08-02 | 2019-01-15 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of pressurized strut displacement sensor embedded locking structure |
| CN113251890A (en) * | 2021-05-17 | 2021-08-13 | 北京航天光华电子技术有限公司 | Zero setting device for position of linear actuator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001182718A (en) * | 1999-12-24 | 2001-07-06 | Taiyo Ltd | Sensor position adjusting device for cylinder apparatus |
| CN101586938A (en) * | 2009-04-17 | 2009-11-25 | 北京航空航天大学 | The position adjustments of a kind of capacitive displacement and vibration transducer and locating device |
| WO2012163319A1 (en) * | 2011-05-31 | 2012-12-06 | Schaeffler Technologies AG & Co. KG | Method and apparatus for calibrating a displacement sensor arranged on a cylinder |
| CN203615946U (en) * | 2013-12-10 | 2014-05-28 | 中国航空工业第六一八研究所 | Disassembly-free type sensor zero-setting structure |
| CN104265735A (en) * | 2014-10-16 | 2015-01-07 | 山东同力液压装备有限公司 | Precise-displacement non-contact hydraulic cylinder |
| CN204255320U (en) * | 2014-11-14 | 2015-04-08 | 中国航空工业第六一八研究所 | A kind of zeroing locking mechanism of telescopic linear movement pick-up |
-
2015
- 2015-06-08 CN CN201510310140.3A patent/CN105041761B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001182718A (en) * | 1999-12-24 | 2001-07-06 | Taiyo Ltd | Sensor position adjusting device for cylinder apparatus |
| CN101586938A (en) * | 2009-04-17 | 2009-11-25 | 北京航空航天大学 | The position adjustments of a kind of capacitive displacement and vibration transducer and locating device |
| WO2012163319A1 (en) * | 2011-05-31 | 2012-12-06 | Schaeffler Technologies AG & Co. KG | Method and apparatus for calibrating a displacement sensor arranged on a cylinder |
| CN203615946U (en) * | 2013-12-10 | 2014-05-28 | 中国航空工业第六一八研究所 | Disassembly-free type sensor zero-setting structure |
| CN104265735A (en) * | 2014-10-16 | 2015-01-07 | 山东同力液压装备有限公司 | Precise-displacement non-contact hydraulic cylinder |
| CN204255320U (en) * | 2014-11-14 | 2015-04-08 | 中国航空工业第六一八研究所 | A kind of zeroing locking mechanism of telescopic linear movement pick-up |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546175A (en) * | 2015-12-21 | 2016-05-04 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Connection structure of four-redundancy sensor and servo valve body, and zero position adjustment method |
| CN106524884A (en) * | 2016-09-27 | 2017-03-22 | 北京精密机电控制设备研究所 | Zero adjustment device and zero adjustment method for servo mechanism |
| CN109211165A (en) * | 2018-08-02 | 2019-01-15 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of pressurized strut displacement sensor embedded locking structure |
| CN113251890A (en) * | 2021-05-17 | 2021-08-13 | 北京航天光华电子技术有限公司 | Zero setting device for position of linear actuator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105041761B (en) | 2017-04-19 |
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