CN107917122A - A kind of band feedback servo hydraulic drive mechanism - Google Patents
A kind of band feedback servo hydraulic drive mechanism Download PDFInfo
- Publication number
- CN107917122A CN107917122A CN201711382841.3A CN201711382841A CN107917122A CN 107917122 A CN107917122 A CN 107917122A CN 201711382841 A CN201711382841 A CN 201711382841A CN 107917122 A CN107917122 A CN 107917122A
- Authority
- CN
- China
- Prior art keywords
- piston rod
- hydraulic cylinder
- cylinder bucket
- displacement sensor
- hydraulic
- 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.)
- Pending
Links
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
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/28—Means for indicating the position, e.g. end of stroke
- F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT
- F15B15/2838—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT with out using position sensors, e.g. by volume flow measurement or pump speed
-
- 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
- F15B15/202—Externally-operated valves mounted in or on the actuator
Abstract
A kind of band feedback servo hydraulic drive mechanism, by hydraulic cylinder bucket（1）, piston rod（2）, displacement sensor（3）And servo valve（4）Composition, the hydraulic cylinder bucket（1）Both ends are equipped with into, oil return opening, into, oil return hydraulic fluid port and servo valve（4）Connection, it is characterised in that：The hydraulic cylinder bucket（1）Inside is provided with piston rod（2）, piston rod（2）Along hydraulic cylinder bucket（1）Inner wall is made advance, retreat linear motion, displacement sensor（3）One end is fixed on hydraulic cylinder bucket（1）On, the other end is fixed on piston rod（2）On, piston rod（2）It is mobile, it is fixed on piston rod（2）On displacement sensor（3）Mobile terminal can also move, and feed back to control system, realize to piston rod（2）The monitoring of movement position.The present invention, by displacement sensor, is monitored piston rod displacement, realizes closed-loop control, reach very high positioning accuracy and repetitive positioning accuracy.
Description
Technical field
The invention belongs to field of machining, relate in particular to that a kind of aluminum-alloy wheel extrusion stretching forming machine is special to be watched
Take hydraulic drive mechanism.
Background technology
Aluminum-alloy wheel is mostly to cast wheel currently on the market, and casting wheel is because technique is limited to, to ensure to pacify
Quan Xing, the comparison that can only design wheel wall thickness is thick, and to ensure that it is safe and reliable that mechanical strength achievees the purpose that, product is thicker, production
The weight of product is just heavier, causes the oil consumption of automobile higher.Progressively spoke is cast out currently on the market after coming to inner rim portion
Carry out extrusion stretching shaping or forge wheel blanks to carry out wheel rim extrusion stretching shaping production aluminum-alloy wheel, to reach
To ensure safety on the premise of loss of weight effect.This is to spinning wheel mechanism and vehicle wheel in the molding equipment of wheel rim extrusion stretching
Rim applies up to more than 10 tons of extrusion stretching power, and wheel rim forms complex-curved, different shaped by certain straight line and circular arc
The wheel rim shape of number aluminum-alloy wheel is also different, and spinning wheel will be moved according to curve form, be all per task according to
Fixed curve is fed, it is desirable to has very high positioning accuracy and repetitive positioning accuracy, so the driving of driving spinning wheel movement
Mechanism must be the structure of servo PLC technology.
The content of the invention
The present invention provides a kind of servo-hydraulic driving mechanism of band feedback, is equipped with 1 both ends of hydraulic cylinder bucket into, oil return opening
It is connected with servo valve 4,3 one end of displacement sensor is fixed on hydraulic cylinder bucket 1, and the other end is fixed on piston rod 2, can be according to being
System instruction, which is realized, advances, retreats work, and by displacement sensor, displacement is monitored, realizes closed-loop control, reaches non-
Often high positioning accuracy and repetitive positioning accuracy.
The technical solution adopted by the present invention is as follows：A kind of band feedback servo hydraulic drive mechanism, by hydraulic cylinder bucket, piston
Bar, displacement sensor and servo valve composition, the hydraulic cylinder bucket both ends are equipped with into, oil return opening, into, oil return hydraulic fluid port and servo valve
Connection, it is characterised in that：Piston rod is installed inside the hydraulic cylinder bucket, piston rod makees to advance along hydraulic cylinder bucket inner wall,
Linear motion is retreated, displacement sensor one end is fixed on hydraulic cylinder bucket, and the other end is fixed on the piston rod, piston rod movement,
Fixed displacement sensor mobile terminal on the piston rod can also move, and feed back to control system, realize to piston rod movement
The monitoring of position.
The servo valve is equipped with to be flowed into hydraulic cylinder bucket both ends into, the corresponding oilhole of oil return opening, servo valve control
The flow of hydraulic oil in hydraulic cylinder bucket, the displacement and translational speed of control piston bar, realize the positioning accuracy of driving mechanism.
The present invention, by displacement sensor, is monitored piston rod displacement, realizes closed-loop control, reach very high
Positioning accuracy and repetitive positioning accuracy.The distinctive absorption impact capacity of hydraulic system, can effectively absorb aluminum-alloy wheel extruding
Impact force during stretch process, to improve the service life of the presentation quality of product and spinning wheel.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention.
Fig. 2 is the control principle drawing of servo valve 4 and oil inlet and oil return mouth.
Embodiment
Known by Fig. 1, Fig. 2, a kind of servo-hydraulic driving mechanism of band feedback, by hydraulic cylinder bucket 1, piston rod 2, displacement sensing
Device 3 and servo valve 4 form, wherein hydraulic cylinder bucket 1, and both ends have into, oil return opening, are connected into, oil return hydraulic fluid port with servo valve 4, hydraulic pressure
The inside of cylinder bucket 1 installation piston rod 2, piston rod 2 can advance along 1 inner wall of cylinder bucket, retreat straight line, and 3 one end of displacement sensor is fixed
On cylinder bucket 1, the other end is fixed on piston rod 2, when piston rod 2 moves, the displacement sensor 3 that is fixed on piston rod 2
Mobile terminal can also move.Control system is fed back to, so as to fulfill the monitoring to piston motion position.The servo valve 4
It is equipped with and flows into hydraulic oil in hydraulic cylinder bucket 1 into, the corresponding oilhole of oil return opening, the control of servo valve 4 with 1 both ends of hydraulic cylinder bucket
Flow, the displacement and translational speed of control piston bar 2, realize the positioning accuracy of driving mechanism.
Claims (2)
- A kind of 1. band feedback servo hydraulic drive mechanism, by hydraulic cylinder bucket（1）, piston rod（2）, displacement sensor（3）And servo Valve（4）Composition, the hydraulic cylinder bucket（1）Both ends are equipped with into, oil return opening, into, oil return hydraulic fluid port and servo valve（4）Connection, it is special Sign is：The hydraulic cylinder bucket（1）Inside is provided with piston rod（2）, piston rod（2）Along hydraulic cylinder bucket（1）Before inner wall is made Into, retreat linear motion, displacement sensor（3）One end is fixed on hydraulic cylinder bucket（1）On, the other end is fixed on piston rod（2）On, Piston rod（2）It is mobile, it is fixed on piston rod（2）On displacement sensor（3）Mobile terminal can also move, and feed back to control system System, is realized to piston rod（2）The monitoring of movement position.
- 2. a kind of band feedback servo hydraulic drive mechanism according to claim 1, servo valve（4）It is equipped with and hydraulic cylinder bucket （1）Both ends are into, the corresponding oilhole of oil return opening, servo valve（4）Control flows into hydraulic cylinder bucket（1）The flow of interior hydraulic oil, control Piston rod（2）Displacement and translational speed, realize the positioning accuracy of driving mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711382841.3A CN107917122A (en) | 2017-12-20 | 2017-12-20 | A kind of band feedback servo hydraulic drive mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711382841.3A CN107917122A (en) | 2017-12-20 | 2017-12-20 | A kind of band feedback servo hydraulic drive mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107917122A true CN107917122A (en) | 2018-04-17 |
Family
ID=61893776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711382841.3A Pending CN107917122A (en) | 2017-12-20 | 2017-12-20 | A kind of band feedback servo hydraulic drive mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107917122A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2678791Y (en) * | 2003-11-13 | 2005-02-16 | 中国第二重型机械集团公司 | Replacer lifting platform of roll bearing housing |
| CN206368862U (en) * | 2016-12-29 | 2017-08-01 | 天津世仓工业设备有限公司 | A kind of Hydrauservo System of tyre tester |
| CN206386324U (en) * | 2016-12-01 | 2017-08-08 | 哈尔滨通用液压机械制造有限公司 | A kind of fluid pressure drive device servo-cylinder |
| CN207647900U (en) * | 2017-12-20 | 2018-07-24 | 江苏天宏自动化科技有限公司 | A kind of band feedback servo hydraulic drive mechanism |
-
2017
- 2017-12-20 CN CN201711382841.3A patent/CN107917122A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2678791Y (en) * | 2003-11-13 | 2005-02-16 | 中国第二重型机械集团公司 | Replacer lifting platform of roll bearing housing |
| CN206386324U (en) * | 2016-12-01 | 2017-08-08 | 哈尔滨通用液压机械制造有限公司 | A kind of fluid pressure drive device servo-cylinder |
| CN206368862U (en) * | 2016-12-29 | 2017-08-01 | 天津世仓工业设备有限公司 | A kind of Hydrauservo System of tyre tester |
| CN207647900U (en) * | 2017-12-20 | 2018-07-24 | 江苏天宏自动化科技有限公司 | A kind of band feedback servo hydraulic drive mechanism |
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