CN108331799A - A kind of machine feedback formula single pole symmetrical figure fluid cylinder - Google Patents
A kind of machine feedback formula single pole symmetrical figure fluid cylinder Download PDFInfo
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- CN108331799A CN108331799A CN201810324251.3A CN201810324251A CN108331799A CN 108331799 A CN108331799 A CN 108331799A CN 201810324251 A CN201810324251 A CN 201810324251A CN 108331799 A CN108331799 A CN 108331799A
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- screw
- piston bore
- cylinder
- ball
- spool
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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
- F15B15/088—Characterised by the construction of the motor unit the motor using combined actuation, e.g. electric and fluid actuation
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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
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
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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
- F15B15/1423—Component parts; Constructional details
- F15B15/1476—Special return means
-
- 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
- F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
-
- 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
- F15B15/202—Externally-operated valves mounted in or on the actuator
Abstract
A kind of machine feedback formula single pole symmetrical figure fluid cylinder, including outer cylinder, piston bore, inner cylinder tube, valve body, flange seat, cylinder cap and adapter flange；Stepper motor is fixed on valve body, switching casing is fixed on its motor shaft, spool one end of valve body is inserted into switching casing, the inserting section of spool and switching casing is clearance fit, feather key is fixed on spool, guide key groove is offered on switching casing inner tubal wall, spool only has linear slide degree of freedom relative to switching casing；It is fixed with screw on piston bore, ball-screw is coated in screw, ball-screw relief hole is offered in the cylinder of piston bore, ball-screw is parallel with piston bore；The free end of ball-screw is located in ball-screw relief hole, the driving end hermetically passing flange seat of ball-screw is simultaneously connected by Coupling Shaft with spool, the gap screw-drive mechanism that disappears is installed between Coupling Shaft and spool, the steering of ball-screw and the steering of the motor shaft of stepper motor are opposite always.
Description
Technical field
The invention belongs to digital fluid cylinder technical fields, more particularly to a kind of machine feedback formula single pole symmetrical figure fluid
Cylinder.
Background technology
Fluid cylinder is that one kind realizing linear reciprocation by the way that the pressure energy of fluid (liquid or gas) is converted to mechanical energy
The terminal executive component of movement.Conventional fluid cylinder must be with control valve for fluids (direction valve, pressure valve, flow valve, servo valve etc.)
The utility functions such as position control, speed control or direction controlling could be realized by being combined, but disadvantage is also clearly, not only system
It is complicated, price is high, working service is inconvenient and more demanding to technical staff, and cannot be directly realized by under computer
It is digital control.
Insufficient existing for conventional fluid cylinder in order to solve, all kinds of digital fluid cylinders are researched and developed in succession, and digital fluid cylinder is one
The straight line executive component for kind integrating energy conversion function and control function, within the scope of low and medium frequency, no matter from practical work(
It can go up on still control performance, better than conventional fluid cylinder.
Currently, in the fields such as engineering machinery and large-scale parallel robot, digital fluid cylinder has been applied successfully, and existing
Digital fluid cylinder mainly machine feedback formula is used to control, and be divided into single pole asymmetrical digital fluid cylinder and double rod symmetrical figure
Fluid cylinder.
For double rod symmetrical figure fluid cylinder, since the area of two control chambers is identical, control characteristic is preferable, but
Primal problem is that axial dimension is too big, will be unable to apply in certain occasions.
For single pole asymmetrical digital fluid cylinder, compared with double rod symmetrical figure fluid cylinder, then have work empty
Between small, advantages of simple structure and simple, using also more extensive.Single pole asymmetrical digital fluid cylinder mainly uses Symmetrical Valve and asymmetric
Two kinds of control modes of valve, when using Symmetrical Valve simple in structure come when controlling, then in performance there are distinct disadvantage, due to
The effective active area of two control chambers differs, and is carrying out positive and negative two to when movement, not only dynamic characteristic is asymmetric, and is changing
To when two control chambers pressure also will produce mutation, to cannot achieve high-precision motion control.When using Asymmetry Valve
Come when controlling, there will be processing difficulties and problem of high cost.
Therefore, it is necessary to a kind of machine feedback formula single pole symmetrical figure fluid cylinder is designed, it is size-constrained in axial space
It can also meet using needs in the case of system, while high-precision motion control may be implemented.
Invention content
In view of the problems of the existing technology, the present invention provides a kind of machine feedback formula single pole symmetrical figure fluid cylinder,
It can also meet using needs in the case where axial space is size-constrained processed, while high-precision motion control may be implemented.
To achieve the goals above, the present invention adopts the following technical scheme that：A kind of machine feedback formula single pole symmetrical figure stream
Body cylinder, including outer cylinder, piston bore, inner cylinder tube, valve body, the first hinge ear mount, the second hinge ear mount, first flange seat, the second method
Blue seat, front end housing, back cylinder cover and adapter flange；The outer cylinder is sleeved on piston bore, and piston bore is sleeved on inner cylinder tube
On；The first flange cover for seat is fixedly connected on piston bore and with outer cylinder one end nozzle, and the front end housing is sleeved on work
It is fixedly connected on plug cylinder cylinder and with first flange seat, seal guide sleeve is installed between first flange seat and piston bore；It is described
Back cylinder cover is fixedly connected with outer cylinder other end nozzle, and the second flange seat is fixedly connected with back cylinder cover, second flange seat and valve body
Between be fixedly connected with by adapter flange；The first hinge ear mount is packed in piston bore outer end, piston bore inner end and outer cylinder
Sealing is slidably matched；The second hinge ear mount is packed on valve body；Described inner cylinder tube one end is equipped with piston, and inner cylinder tube passes through work
Plug is slidably matched with piston bore sealing；The inner cylinder tube other end hermetically passing second flange seat, and by adapter flange
Transitional fluid channel in valve body first fluid channel sealing be connected to；The piston cylinder being connected with the first fluid channel
Tube inner chamber is set as piston bore and stretches out driving chamber, and circumferential closing chamber is constituted between piston bore outer surface and outer shell tube inner surface
Room, the circumferential direction closed chamber are set as piston bore retraction driving chamber；The piston bore retraction driving chamber passes through conduit and valve body
Interior second fluid channel sealing connection；The piston bore inner cavity being isolated with the first fluid channel passes through on outer cylinder
Air hole is connected with air.
It is fixed with stepper motor on the valve body, switching casing, the valve body are fixed on the motor shaft of stepper motor
Spool one end be inserted into switching casing in, spool with switching casing inserting section be clearance fit, be fixed with and lead on spool
Xiang Jian, offers guide key groove on switching casing inner tubal wall, and the spool only has linear slide certainly relative to switching casing
By spending.
It is fixed with screw on the piston bore, a ball-screw is coated in screw, in the cylinder of piston bore
Ball-screw relief hole is offered in vivo, ball-screw is parallel with piston bore；Described ball-screw one end is free end, rolling
The free end of ballscrew is located in ball-screw relief hole, and the ball-screw other end is driving end, and the driving end of ball-screw is close
Envelope is connected across second flange seat, and by a Coupling Shaft with the spool other end, is equipped with and disappears between Coupling Shaft and spool
Gap screw-drive mechanism is connected between Coupling Shaft and second flange seat and adapter flange by bearing；The ball-screw turns
Steering to the motor shaft with stepper motor is opposite always.
The gap screw-drive mechanism that disappears includes Change-over frame, trip bolt, transmission main nut, transmission nut, transmission spiral shell
Bar and the gap voussoir that disappears；The Change-over frame is fixedly connected with by trip bolt and Coupling Shaft, transmission main nut, transmission nut and the gap that disappears
Voussoir is packed on Change-over frame, the gap that disappears voussoir be located at transmission main nut and transmission nut between, the gap that disappears voussoir simultaneously with biography
Dynamic main nut and transmission nut stick together；The drive screw connects with transmission main nut and transmission nut thread simultaneously
It connects, drive screw is fixedly connected with spool；By adjusting the radial position for the gap voussoir that disappears, to drive screw and transmission main nut and biography
Drive gap between dynamic pair nut is eliminated.
Beneficial effects of the present invention：
The machine feedback formula single pole symmetrical figure fluid cylinder of the present invention, in the case where axial space is size-constrained processed
It can meet using needs, while high-precision motion control may be implemented.
Description of the drawings
Fig. 1 is a kind of front view of machine feedback formula single pole symmetrical figure fluid cylinder of the present invention；
Fig. 2 is a kind of side view of machine feedback formula single pole symmetrical figure fluid cylinder of the present invention；
Fig. 3 is the portions I enlarged drawing in Fig. 1；
Fig. 4 is the portions II enlarged drawing in Fig. 1；
In figure, 1-outer cylinder, 2-piston bores, 3-inner cylinder tubes, 4-valve bodies, the 5-the first hinge ear mount, the 6-the second hinge
Ear mount, 7-first flange seats, 8-second flange seats, 9-front end housings, 10-back cylinder covers, 11-adapter flanges, 12-sealings are led
To set, 13-pistons, 14-transitional fluid channels, 15-first fluid channels, 16-piston bores stretching driving chamber, 17-is living
Plug cylinder cylinder retraction driving chamber, 18-conduits, 19-second fluid channels, 20-air holes, 21-stepper motors, 22-reducing sleeves
Pipe, 23-spools, 24-feather keys, 25-guide key grooves, 26-screws, 27-ball-screws, 28-Coupling Shafts, 29-axis
It holds, 30-Change-over frames, 31-trip bolts, 32-transmission main nuts, 33-transmission nuts, 34-drive screws, 35-disappear
Gap voussoir, 36-ball-screw relief holes.
Specific implementation mode
The present invention is described in further detail in the following with reference to the drawings and specific embodiments.
As shown in figures 1-4, a kind of machine feedback formula single pole symmetrical figure fluid cylinder, including outer cylinder 1, piston bore 2,
Inner cylinder tube 3, valve body 4, first cut with scissors ear mount 5, second and cut with scissors ear mount 6, first flange seat 7, second flange seat 8, front end housing 9, back cylinder cover
10 and adapter flange 11；The outer cylinder 1 is sleeved on piston bore 2, and piston bore 2 is sleeved on inner cylinder tube 3；Described first
Flange seat 7 is sleeved on piston bore 2 and is fixedly connected with 1 one end nozzle of outer cylinder, and the front end housing 9 is sleeved on piston bore 2
It above and with first flange seat 7 is fixedly connected with, seal guide sleeve 12 is installed between first flange seat 7 and piston bore 2；After described
Cylinder cap 10 is fixedly connected with 1 other end nozzle of outer cylinder, and the second flange seat 8 is fixedly connected with back cylinder cover 10, second flange seat 8 with
It is fixedly connected with by adapter flange 11 between valve body 4；The first hinge ear mount 5 is packed in 2 outer end of piston bore, in piston bore 2
End is slidably matched with the sealing of outer cylinder 1；The second hinge ear mount 6 is packed on valve body 4；3 one end of the inner cylinder tube is equipped with work
Plug 13, inner cylinder tube 3 are slidably matched by piston 13 and the sealing of piston bore 2；3 the second method of other end hermetically passing of the inner cylinder tube
Blue seat 8, and be connected to the sealing of first fluid channel 15 in valve body 4 by the transitional fluid channel 14 on adapter flange 11；With
2 inner cavity of piston bore that the first fluid channel 15 is connected is set as piston bore and stretches out driving chamber 16,2 appearance of piston bore
Circumferential closed chamber is constituted between 1 inner surface of face and outer cylinder, which is set as piston bore retraction driving chamber 17；
The piston bore retraction driving chamber 17 is connected to by conduit 18 with the sealing of second fluid channel 19 in valve body 4；With described
2 inner cavity of piston bore that one fluid channel 15 is isolated is connected by the air hole 20 on outer cylinder 1 with air.
It is fixed with stepper motor 21 on the valve body 4, switching casing 22, institute are fixed on the motor shaft of stepper motor 21
23 one end of spool for stating valve body 4 is inserted into switching casing 22, and the inserting section of spool 23 and switching casing 22 is clearance fit,
Be fixed with feather key 24 on spool 23, guide key groove 25 offered on switching 22 inner tubal wall of casing, the spool 23 relative to
Casing 22 of transferring only has linear slide degree of freedom.
It is fixed with screw 26 on the piston bore 2, a ball-screw 27 is coated in screw 26, in piston cylinder
Ball-screw relief hole 36 is offered in the cylinder of cylinder 2, ball-screw 27 is parallel with piston bore 2；The ball-screw 27
One end is free end, and the free end of ball-screw 27 is located in ball-screw relief hole 36, and 27 other end of ball-screw is driving
End, the driving end hermetically passing second flange seat 8 of ball-screw 27, and pass through a Coupling Shaft 28 and 23 other end phase of spool
Even, the gap screw-drive mechanism that disappears, Coupling Shaft 28 and second flange seat 8 and switching method are installed between Coupling Shaft 28 and spool 23
It is connected by bearing 29 between orchid 11；The steering of the steering of the ball-screw 27 and the motor shaft of stepper motor 21 phase always
Instead.
The gap screw-drive mechanism that disappears includes Change-over frame 30, trip bolt 31, transmission main nut 32, transmission nut
33, drive screw 34 and the gap voussoir 35 that disappears；The Change-over frame 30 is fixedly connected with by trip bolt 31 and Coupling Shaft 28, is driven main spiral shell
Mother 32, transmission nut 33 and the gap voussoir 35 that disappears are packed on Change-over frame 30, the gap that disappears voussoir 35 be located at transmission main nut 32 with
Between transmission nut 33, the gap that disappears voussoir 35 is sticked together with transmission main nut 32 and transmission nut 33 simultaneously；The biography
Dynamic screw rod 34 is threadedly coupled with transmission main nut 32 and transmission nut 33 simultaneously, and drive screw 34 is fixedly connected with spool 23；It is logical
The radial position for adjusting the gap voussoir 35 that disappears is crossed, to the transmission between drive screw 34 and transmission main nut 32 and transmission nut 33
It is eliminated in gap.
Illustrate the one-off process of the present invention below in conjunction with the accompanying drawings：
When needing piston bore 2 to execute extending action, 21 1 pulse signals of stepper motor are given first, make stepper motor
21 motor shaft correspondingly rotates an angle, and by the rotation of motor shaft, synchronous drive switching casing 22 rotates identical angle
Degree will be further driven to spool 23 and drive screw 34 rotate identical angle with the rotation of switching casing 22, in transmission spiral shell
While bar 34 rotates, the transmission main nut 32 and one axis of generation of transmission nut 33 in gap screw-drive mechanism of disappearing can be passed through
To feeding, and by this axial feed of drive screw 34, spool 23 will be made to synchronize and generate one with equidistant axial position
It moves, to make high-pressure fluid enter in first fluid channel 15 in a pulsed fashion, and passes sequentially through transitional fluid channel 14 and interior
Cylinder barrel 3 enters piston bore and stretches out in driving chamber 16, and then drives the protruding corresponding length of piston bore 3；Meanwhile piston
Fluid in cylinder barrel retraction driving chamber 17 will pass sequentially through 19 Returning fluid storage box of conduit 18 and second fluid channel.
During piston bore 3 is protruding, 26 synchronizing moving same distance of screw thereon can be driven, and screw 26
Linear movement translate into 27 rotary motion of ball-screw, the electricity of the direction of rotation of ball-screw 27 and stepper motor 21 at this time
The direction of rotation of arbor on the contrary, and rotational angle it is identical；With the rotation of ball-screw 27, synchronous drive Coupling Shaft 28 is rotated
Same angle, and then the Change-over frame 30 for the gap screw-drive mechanism that disappears is driven to rotate, to realize transmission main nut 32 and transmission
The synchronous rotation of nut 33, the rotation by being driven main nut 32 and transmission nut 33 can make drive screw 34 generate one instead
To axial feed, and by drive screw 34 this reversed axial feed, will make spool 23 synchronize generate one it is same
The reversed axial displacement of distance, to make spool 23 reset, the valve port in valve body 4 is closed, and the pulsatile once of high-pressure fluid supplies
To end, digital fluid cylinder then realizes the stretching of the pulsatile once stepping under machine feedback at this time.
When stepper motor 21 persistently obtains pulse signal, then the piston bore 3 of digital fluid cylinder will be under macrostate
Realize continuous stretching, and the control accuracy of 3 overhang of piston bore can be effectively ensured.
When needing piston bore 2 to execute retracting action, 21 1 pulse signals of stepper motor are given first, make stepper motor
21 motor shaft correspondingly rotates an angle, and the rotational angle is opposite with the steering when execution extending action of piston bore 2；
By the rotation of motor shaft, synchronous drive switching casing 22 rotates identical angle, will be into one with the rotation of switching casing 22
Step band movable valve plug 23 and drive screw 34 rotate identical angle, while drive screw 34 rotates, can pass through the gap spiral that disappears
Transmission main nut 32 and transmission nut 33 in transmission mechanism generate an axial feed, and the axial feed and piston bore
Direction when 2 execution extending action is opposite；By this axial feed of drive screw 34, spool 23 will be made to synchronize and generate one
With equidistant axial displacement, to make high-pressure fluid enter in second fluid channel 19 in a pulsed fashion, and pass through conduit 18
In bouncing back driving chamber 17 into piston bore, and then piston bore 3 is driven inwardly to bounce back corresponding length；Meanwhile piston bore
The fluid stretched out in driving chamber 16 will pass sequentially through 14 Returning fluid storage box of inner cylinder tube 3 and transitional fluid channel.
In 3 inside retraction process of piston bore, 26 synchronizing moving same distance of screw thereon can be driven, and screw 26
Linear movement translate into 27 rotary motion of ball-screw, the electricity of the direction of rotation of ball-screw 27 and stepper motor 21 at this time
The direction of rotation of arbor on the contrary, and rotational angle it is identical；With the rotation of ball-screw 27, synchronous drive Coupling Shaft 28 is rotated
Same angle, and then the Change-over frame 30 for the gap screw-drive mechanism that disappears is driven to rotate, to realize transmission main nut 32 and transmission
The synchronous rotation of nut 33, the rotation by being driven main nut 32 and transmission nut 33 can make drive screw 34 generate one instead
To axial feed, and by drive screw 34 this reversed axial feed, will make spool 23 synchronize generate one it is same
The reversed axial displacement of distance, to make spool 23 reset, the valve port in valve body 4 is closed, and the pulsatile once of high-pressure fluid supplies
To end, digital fluid cylinder then realizes the retraction of the pulsatile once stepping under machine feedback at this time.
When stepper motor 21 persistently obtains pulse signal, then the piston bore 3 of digital fluid cylinder will be under macrostate
Realize continuous retraction, and the control accuracy of 3 amount of recovery of piston bore can be effectively ensured.
In the case where axial space is size-constrained processed, machine feedback formula single pole symmetrical figure fluid cylinder of the invention can
Met using needs with effective.
Scheme in embodiment be not to limit the scope of patent protection of the present invention, it is all without departing from carried out by the present invention etc.
Effect implements or change, is both contained in the scope of the claims of this case.
Claims (4)
1. a kind of machine feedback formula single pole symmetrical figure fluid cylinder, it is characterised in that：Including outer cylinder, piston bore, inner cylinder tube,
Valve body, the first hinge ear mount, the second hinge ear mount, first flange seat, second flange seat, front end housing, back cylinder cover and adapter flange；It is described
Outer cylinder is sleeved on piston bore, and piston bore is sleeved on inner cylinder tube；The first flange cover for seat is on piston bore
And be fixedly connected with outer cylinder one end nozzle, the front end housing is sleeved on piston bore and is fixedly connected with first flange seat,
Seal guide sleeve is installed between one flange seat and piston bore；The back cylinder cover is fixedly connected with outer cylinder other end nozzle, institute
It states second flange seat to be fixedly connected with back cylinder cover, be fixedly connected with by adapter flange between second flange seat and valve body；First hinge
Ear mount is packed in piston bore outer end, and piston bore inner end is slidably matched with outer cylinder sealing；The second hinge ear mount is packed in
On valve body；Described inner cylinder tube one end is equipped with piston, and inner cylinder tube is slidably matched by piston and piston bore sealing；The inner casing
Cylinder other end hermetically passing second flange seat, and it is logical by the transitional fluid channel on adapter flange and the first fluid in valve body
Road sealing connection；The piston bore inner cavity being connected with the first fluid channel is set as piston bore and stretches out driving chamber, piston
Circumferential closed chamber is constituted between cylinder barrel outer surface and outer shell tube inner surface, which is set as piston bore retraction and drives
Dynamic chamber；The piston bore retraction driving chamber is connected to by conduit with the second fluid channel sealing in valve body；With described first
The piston bore inner cavity that fluid channel is isolated is connected by the air hole on outer cylinder with air.
2. a kind of machine feedback formula single pole symmetrical figure fluid cylinder according to claim 1, it is characterised in that：In the valve
It is fixed with stepper motor on body, switching casing is fixed on the motor shaft of stepper motor, spool one end of the valve body is inserted into
It transfers in casing, the inserting section of spool and switching casing is clearance fit, and feather key is fixed on spool, in switching casing
Guide key groove is offered on tube wall, the spool only has linear slide degree of freedom relative to switching casing.
3. a kind of machine feedback formula single pole symmetrical figure fluid cylinder according to claim 2, it is characterised in that：In the work
It is fixed with screw on plug cylinder cylinder, a ball-screw is coated in screw, ball wire is offered in the cylinder of piston bore
Thick stick relief hole, ball-screw are parallel with piston bore；Described ball-screw one end is free end, the free end position of ball-screw
In in ball-screw relief hole, the ball-screw other end is to drive end, the driving end hermetically passing second flange seat of ball-screw,
And be connected with the spool other end by a Coupling Shaft, the gap screw-drive mechanism that disappears is installed between Coupling Shaft and spool, is turned
It is connected by bearing between spindle and second flange seat and adapter flange；The steering of the ball-screw and the motor of stepper motor
The steering of axis is opposite always.
4. a kind of machine feedback formula single pole symmetrical figure fluid cylinder according to claim 3, it is characterised in that：The gap that disappears
Screw-drive mechanism includes Change-over frame, trip bolt, transmission main nut, transmission nut, drive screw and the gap voussoir that disappears；It is described
Change-over frame is fixedly connected with by trip bolt and Coupling Shaft, is driven main nut, transmission nut and the gap voussoir that disappears is packed in switching
On frame, the gap that disappears voussoir is located between transmission main nut and transmission nut, the gap that disappears voussoir simultaneously with transmission main nut and transmission
Nut sticks together；The drive screw is connect with transmission main nut and transmission nut thread simultaneously, drive screw and valve
Core is fixedly connected with；By adjusting the radial position for the gap voussoir that disappears, between drive screw and transmission main nut and transmission nut
Drive gap is eliminated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810324251.3A CN108331799A (en) | 2018-04-12 | 2018-04-12 | A kind of machine feedback formula single pole symmetrical figure fluid cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810324251.3A CN108331799A (en) | 2018-04-12 | 2018-04-12 | A kind of machine feedback formula single pole symmetrical figure fluid cylinder |
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| Publication Number | Publication Date |
|---|---|
| CN108331799A true CN108331799A (en) | 2018-07-27 |
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ID=62932835
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810324251.3A Pending CN108331799A (en) | 2018-04-12 | 2018-04-12 | A kind of machine feedback formula single pole symmetrical figure fluid cylinder |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360838A (en) * | 2020-10-28 | 2021-02-12 | 辽宁工程技术大学 | High-frequency-response, high-precision and low-friction digital fluid cylinder |
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| CN104930014A (en) * | 2015-06-05 | 2015-09-23 | 上海美西为机电设备有限公司 | Digital servo hydraulic cylinder |
| CN106369006A (en) * | 2016-11-14 | 2017-02-01 | 浙江大学舟山海洋研究中心 | Digital servo hydraulic cylinder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112360838A (en) * | 2020-10-28 | 2021-02-12 | 辽宁工程技术大学 | High-frequency-response, high-precision and low-friction digital fluid cylinder |
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Application publication date: 20180727 |