CN105041761B - Zero adjustment device for servo actuator - Google Patents
Zero adjustment device for servo actuator Download PDFInfo
- Publication number
- CN105041761B CN105041761B CN201510310140.3A CN201510310140A CN105041761B CN 105041761 B CN105041761 B CN 105041761B CN 201510310140 A CN201510310140 A CN 201510310140A CN 105041761 B CN105041761 B CN 105041761B
- Authority
- CN
- China
- Prior art keywords
- piston rod
- nut
- hollow
- displacement transducer
- leader
- Prior art date
- 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.)
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Classifications
-
- 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
-
- 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
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 zero adjuster, it is adaptable to the zero of servo actuator electric displacement sensor
Position debugging is used.
Background technology
When servo actuator actual installation displacement transducer returns to zero, sensor housing is fixed on start by oscillating bearing
In device shell inner hole, its core assembly is then fixed on the endoporus of piston rod, is moved back and forth with piston rod, is realized to line position
The measurement of shifting.
When servo actuator carry out it is checking for zero before need to pull down locking screw nut and bolt (NAB), carry out checking for zero work.This
When piston rod be in non-locking state, front end nut piston rod in rundown process is active, and produces when torque is applied
Product piston rod can be subject to a side force to cause piston rod generation position to shift, in assembling zeroing and test vibration process
In easily cause repeatedly the generation of checking for zero problem.The case study occurred in Jing electrical null position debugging process, finds to adjust
It is shorter that the reason for electrical null position is easily overproof during zero is mainly actuator mechanical trip itself, and correspondingly displacement voltage value is big
(mechanical displacement and corresponding voltage value can see the table below), so electrical null position deviation is easily caused in debugging process.
Require that zero value is ± 10mV during servo actuator debugging zero-bit, and can be seen by above table and debugging process
Go out, when front end nut is when screw-down torque is applied, when corresponding displacement change is similarly 0.01mm, the variable quantity of III grade of displacement
For 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 debugging process cannot uniform requirement, slight turns
Cause the change of electrical null position by dynamic, so as to cause complexity during returning to zero different.After product zeroing, in test process
In the change of product zero-bit also or may all be caused due to the slight jitter of jet pipe due to servo valve self performance, so as to increase
Plus zeroing work repeatedly.
The basic reason for causing the problems referred to above is that piston rod cannot ensure that its mechanical zero is constant during zeroing, from
And cause the increase of zeroing workload, so Jing analysis designs solve this by need to increasing the device that a mechanical zero is positioned ask
Topic.
The content of the invention
The technical problem to be solved in the present invention is：To overcome the deficiencies in the prior art, a kind of servo actuator zero-bit is proposed
Adjusting apparatus, to reduce product cost of labor.
The technical solution of the present invention：
A kind of servo actuator zero adjuster, including piston rod, displacement transducer and adjusting part, the piston rod
For hollow cylindrical configuration, displacement transducer is located at piston rod hollow position, and its one end afterbody is fixedly connected with piston rod, the other end
Head is provided with the oscillating bearing that can make displacement transducer that lateral rotation occurs, the leader nut being connected with displacement transducer
Female thread is connected with the external screw thread of oscillating bearing, the external screw thread of leader nut and the supporting connection of the female thread of piston rod, for adjusting
The axial movement of whole displacement transducer；In external screw thread and piston rod for the front end nut for controlling leader nut axial movement
The supporting connection of screw thread；
Adjusting part includes piston rod fixture, and leader nut locking member, null adjustment part, the piston rod of inner hollow is consolidated
Determine part external screw thread to be connected with locking nut female thread, then be connected with piston rod female thread, make piston rod that lateral rotation not occur；In
Empty leader nut locking member is placed in front end nut through the hollow position of piston rod fixture, to adjust front end nut
Axial movement；Null adjustment part passes through the hollow space of leader nut locking member, its one end to be used to adjust in being placed in leader nut
Whole leader nut, and then the axial movement of command displacement sensor.
When the electrical null position of displacement transducer is in -10～+10mV scopes, 15-25Nm is applied to leader nut locking member
Screw-down torque, locks front end nut, displacement transducer is not moved axially.
Present invention advantage compared with prior art is：
(1) present invention is during checking for zero, it is to be ensured that the accuracy of product mechanical zero, that is, ensures locked work
Stopper rod, screw-down torque is applied the order of accuarcy of displacement transducer electrical null position can be ensured, effectively prevent product zero-bit position
Skew is put, reducing debug repeatedly number of times, accelerate product delivery progress；
(2) by present invention effectively prevents due to producing repeatedly, retest and process flow arrangement and the people that causes
Work cost increases.
Description of the drawings
Fig. 1 is displacement transducer scheme of installation of the present invention；
Fig. 2 is assembly structure diagram of the present invention；
Fig. 3 is fractionation structural representation of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment describes the present invention.
A kind of servo actuator zero adjuster, as shown in Figure 1, 2, including piston rod 1, displacement transducer 2 and regulation
Component, the piston rod 1 is hollow cylindrical configuration, and displacement transducer 2 is located at the hollow position of piston rod 1, its one end afterbody and work
Stopper rod 1 is fixedly connected, and another end head is provided with the oscillating bearing that can make displacement transducer 2 that lateral rotation occurs, with displacement
The female thread of leader nut 3 of the connection of sensor 2 is connected with the external screw thread of oscillating bearing, the external screw thread and piston of leader nut 3
The supporting connection of female thread of bar 1, for adjusting the axial movement of displacement transducer 2；For controlling the axial movement of leader nut 3
The external screw thread of front end nut 4 and the supporting connection of female thread of piston rod 1；
Adjusting part includes piston rod fixture 6, leader nut locking member 7, null adjustment part 8, the piston of inner hollow
The external screw thread of bar fixture 6 is connected with the female thread of locking nut 5, then is connected with the female thread of piston rod 1, makes piston rod 1 that side not occur
To rotation；Hollow leader nut locking member 7 is placed in front end nut 4 through the hollow position of piston rod fixture 6, to adjust
The axial movement of whole front end nut 4；Null adjustment part 8 passes through the hollow space of leader nut locking member 7, its one end to be placed in guide rod
It is used to adjust leader nut 3, and then the axial movement of command displacement sensor 2 in 3 in nut.
During regulation, need to preferentially use piston rod fixture 6, and tighten locking nut 5 makes it by the fixing lock of piston rod 1
Extremely, then assembled with front end nut 4 using leader nut locking member 7, secondly null adjustment part 8 is passed through into leader nut locking member
7 and four square holes at guide rod docked, adjust zero-bit.When in the range of checking for zero extremely -10～+10mV, due to piston
Bar is in locking state, and to leader nut locking member 7 20Nm screw-down torques are applied, and makes front end nut locked, it is ensured that displacement sensing
Device is no longer moved axially.Finally, null adjustment part 8, leader nut locking member 7 and piston rod fixture 6 are removed successively, zero
Position adjustment is finished.The assembling and fractionation of zero adjuster component is as shown in Figure 2 and Figure 3.
The undisclosed content of the present invention is known to the skilled person general knowledge.
Claims (2)
1. a kind of servo actuator zero adjuster, it is characterised in that including piston rod (1), displacement transducer (2) and adjust
Component, the piston rod (1) is hollow cylindrical configuration, displacement transducer (2) positioned at piston rod (1) hollow position, its one end with
Piston rod (1) is fixedly connected, and the other end is provided with the oscillating bearing that can make displacement transducer (2) that lateral rotation occurs, with position
The female thread of the leader nut (3) of displacement sensor (2) connection is connected with the external screw thread of oscillating bearing, the outer spiral shell of leader nut (3)
The supporting connection of female thread of stricture of vagina and piston rod (1), for adjusting the axial movement of displacement transducer (2)；For controlling guide rod spiral shell
The external screw thread of the front end nut (4) of female (3) axial movement and the supporting connection of female thread of piston rod (1)；
Adjusting part includes piston rod fixture (6), leader nut locking member (7), null adjustment part (8), the work of inner hollow
Stopper rod fixture (6) external screw thread is connected with locking nut (5) female thread, then is connected with piston rod (1) female thread, makes piston rod
(1) there is no lateral rotation；Hollow leader nut locking member (7) is placed in through the hollow position of piston rod fixture (6)
In front end nut (4), to adjust the axial movement of front end nut (4)；Null adjustment part (8) is through leader nut locking member (7)
Hollow space, its one end be placed in leader nut in (3) be used for adjust leader nut (3), and then command displacement sensor (2)
Axial movement.
2. a kind of servo actuator zero adjuster as claimed in claim 1, it is characterised in that displacement transducer (2)
When electrical null position is in -10～+10mV scopes, 15-25Nm screw-down torques are applied to leader nut locking member (7), before locking
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 CN105041761A (en) | 2015-11-11 |
| CN105041761B true CN105041761B (en) | 2017-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510310140.3A Active CN105041761B (en) | 2015-06-08 | 2015-06-08 | Zero adjustment device for servo actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105041761B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546175B (en) * | 2015-12-21 | 2017-12-05 | 中国航空工业集团公司金城南京机电液压工程研究中心 | The attachment structure and zero-bit adjusting method of a kind of four redundancy sensor and servo valve body |
| 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 |
| CN109211165B (en) * | 2018-08-02 | 2021-03-26 | 中国航空工业集团公司西安飞行自动控制研究所 | Built-in locking structure of actuator cylinder displacement sensor |
| CN113251890B (en) * | 2021-05-17 | 2023-06-06 | 北京航天光华电子技术有限公司 | Position zeroing device for linear actuator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3598493B2 (en) * | 1999-12-24 | 2004-12-08 | 太陽鉄工株式会社 | Sensor position adjusting device for cylinder device |
| DE102012207417A1 (en) * | 2011-05-31 | 2012-12-06 | Schaeffler Technologies AG & Co. KG | Method and device for calibrating a displacement sensor arranged on a cylinder |
-
2015
- 2015-06-08 CN CN201510310140.3A patent/CN105041761B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105041761A (en) | 2015-11-11 |
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