CN202203190U - Hydraulic reciprocating servo control device - Google Patents

Hydraulic reciprocating servo control device Download PDF

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Publication number
CN202203190U
CN202203190U CN 201120077812 CN201120077812U CN202203190U CN 202203190 U CN202203190 U CN 202203190U CN 201120077812 CN201120077812 CN 201120077812 CN 201120077812 U CN201120077812 U CN 201120077812U CN 202203190 U CN202203190 U CN 202203190U
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CN
China
Prior art keywords
hydraulic
links
actuating motor
servo valve
machinery
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Expired - Fee Related
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CN 201120077812
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Chinese (zh)
Inventor
郑金传
张宏军
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Ningxia Yinchuan Dahe CNC Machine Co Ltd
Beijing Research Institute of Auotomation for Machinery Industry Co Ltd
Original Assignee
Ningxia Yinchuan Dahe CNC Machine Co Ltd
Beijing Research Institute of Auotomation for Machinery Industry Co Ltd
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Application filed by Ningxia Yinchuan Dahe CNC Machine Co Ltd, Beijing Research Institute of Auotomation for Machinery Industry Co Ltd filed Critical Ningxia Yinchuan Dahe CNC Machine Co Ltd
Priority to CN 201120077812 priority Critical patent/CN202203190U/en
Application granted granted Critical
Publication of CN202203190U publication Critical patent/CN202203190U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a driving device, particularly to a hydraulic reciprocating servo control device, which includes a hydraulic drive system and a control system, and is characterized in that the hydraulic drive system includes a hydraulic cylinder and a mechanical hydraulic servovalve used for controlling the hydraulic cylinder to perform reciprocating motion; a valve body in the mechanical hydraulic servovalve is fixedly connected with a piston rod in the hydraulic cylinder; one end of a connecting piece is connected with a valve core in the mechanical hydraulic servovalve, and the other end thereof is connected with a reciprocating driving mechanism; and the reciprocating driving mechanism is controlled through a digital control system. The hydraulic reciprocating servo control device provided by the utility model has simple structure, inexpensive price, and convenience for adjustment, operation and maintenance, is applicable to various occasions in need of numerical control and hydraulic drive, particularly has vital significance in improving the manufacture level of domestic internal combustion engines with respect to great improvement on the integral level and market competition of the domestic top grade honing machines after being applied in honing machine tool industry.

Description

The reciprocal servocontrol device of hydraulic pressure
Affiliated technical field
The utility model relates to a kind of hydraulic control device, particularly controls the reciprocal servocontrol device of hydraulic pressure in the oil hydraulic cylinder to-and-fro motion process.
Background technique
Through the hydraulic pressure reversing mechanism that hydraulicdirectional control valve and oil hydraulic cylinder are formed, be to realize one of usual means that to-and-fro motion is comparatively classical, characteristics such as that this device has is simple in structure, control is convenient.But development along with technology; To the hydraulic pressure reversing mechanism require increasingly high; Particularly for the honing machine industry, the core manufacturing technology that the reciprocal numerically controlled technology of plover mill machine main shaft is a plover mill machine, it has determined the class of plover mill machine and the height of honing technique level.
At present; The spindle reciprocating motion of high-grade plover mill machine has been realized numerical control; The controlling method of the switching-over control-driven system of its spindle reciprocating motion oil hydraulic cylinder has two kinds; The electro-hydraulic position closed loop that the first adopts electro-hydraulic servo Proportional valve and main shaft displacement transducer to form through the electrical apparatus interface of electro-hydraulic servo proportional valve controller, realizes the numerical control that the main shaft switching-over drives; It two is to adopt the special-purpose rotary valve of special honing; Convert the main shaft linear reciprocating motion of plover mill machine to valve inner control parts rotatablely move; Guide's control section of valve rotates under motor driving; Put closed loop with the rotation that the main shaft linear reciprocating motion produces through special mechanism's formation whirler liquid level,, realize the numerical control that the main shaft switching-over drives again by the electrical apparatus interface of rotary valve controller.
In above-mentioned two kinds of main shafts switching-over control-driven system; The electro-hydraulic position closed loop control drive system that electro-hydraulic servo Proportional valve and main shaft displacement transducer are formed; Its electro-hydraulic servo Proportional valve is expensive and harsh to service condition; And adopt the switching-over control-driven system of the special-purpose rotary valve of special honing; It need be transformed into the linear motion of main shaft the whirler liquid level that rotatablely moves with complicated and put closed-loop system, and the cost of production of switching-over control-driven system is improved greatly, also make simultaneously system debugging, safeguard very loaded down with trivial details.
Two kinds of switching-over control-driven systems of the spindle reciprocating motion of above-mentioned high-grade plover mill machine are controlled by external grinding machine bed manufacturing enterprise, and the appropriate litigation fees that the switching-over control-driven system is somebody's turn to do in import is high, have seriously restricted the development of the high-grade plover mill machine of China.
Summary of the invention
The purpose of the utility model is the defective that overcomes above-mentioned existing technology; A kind of action that utilizes numerical control device to control mechanical hydraulic efficiency servo-valve is provided; The speed, position, the switching-over that realize oil hydraulic cylinder are controlled; The hydraulic pressure position closed loop that promptly adopts numerical controlled machinery position closed loop and linear mechanical hydraulic efficiency servo-valve to form, the controlled reciprocal servo-actuated numerical control of the reciprocating hydraulic pressure drive unit of speed, position, switching-over of realization oil hydraulic cylinder.
The technological scheme of the utility model: the reciprocal servo-actuated numerical control of a kind of hydraulic pressure drive unit; Comprise hydraulic driving system and control system; It is characterized in that hydraulic driving system comprises the machinery Hydraulic Servo valve that oil hydraulic cylinder and control oil hydraulic cylinder move back and forth; Valve body in the machinery Hydraulic Servo valve is fixedly linked through the piston rod in bindiny mechanism and the oil hydraulic cylinder; One end of link links to each other with spool in the machinery Hydraulic Servo valve, and the other end links to each other with reciprocating drive mechanism, and reciprocating drive mechanism is controlled through numerical control system.
Valve body in the above-mentioned machinery Hydraulic Servo valve is made up of the moving part that is fixedly mounted on the piston rod with the bindiny mechanism that the piston rod in the oil hydraulic cylinder links to each other, and the valve body in moving part and the machinery Hydraulic Servo valve is fixedly linked.
Above-mentioned reciprocating drive mechanism is by actuating motor, the active profile of tooth belt wheel that is installed in the actuating motor output terminal, and the corresponding passive profile of tooth belt wheel of profile of tooth belt wheel and be installed in initiatively the Toothed belt between profile of tooth belt wheel, the passive profile of tooth belt wheel and form initiatively; One end of link links to each other with spool in the machinery Hydraulic Servo valve; The other end is fixed on the Toothed belt, and actuating motor is controlled through control system.
Above-mentioned reciprocating drive mechanism by actuating motor, be installed in the actuating motor output terminal drive sprocket, and drive sprocket corresponding by movable sprocket and be installed in drive sprocket, formed by the chain between the movable sprocket; One end of link links to each other with spool in the machinery Hydraulic Servo valve; The other end is fixed on the chain, and actuating motor is controlled through control system.
Above-mentioned reciprocating drive mechanism by actuating motor, be installed in the leading screw of actuating motor output terminal and form with the nut that leading screw matches; One end of link links to each other with spool in the machinery Hydraulic Servo valve; The other end links to each other with nut, and actuating motor is controlled through control system.
Above-mentioned reciprocating drive mechanism is made up of linear electric motor, and an end of link links to each other with spool in the machinery Hydraulic Servo valve, and the other end links to each other with linearly moving member in the linear electric motor, and linear electric motor are controlled through control system.
The characteristics of the utility model are: 1, the utility model utilizes numerical control device to control the action of mechanical hydraulic efficiency servo-valve; The speed, position, the switching-over that realize oil hydraulic cylinder are controlled; The hydraulic pressure position closed loop that promptly adopts numerical controlled machinery position closed loop and linear mechanical hydraulic efficiency servo-valve to form realizes that speed, position, the switching-over of oil hydraulic cylinder is controlled.
2, the numerical control device of widely used detection and setting straight-line displacement is as guide's control unit in the employing lathe, and the machinery Hydraulic Servo valve that will have the linear mechanical characteristic is formed the reciprocal numerical control reverse driven gear of brand-new hydraulic system as with moving cell.The numerical controlled machinery position closed loop system that the straight-line displacement of forming through actuating motor, transmission device and oil hydraulic cylinder detects and sets; Control has the tool hydraulic efficiency servo-valve of linear mechanical characteristic as the hydraulic pressure position closed loop system with moving cell, realizes the reciprocal numerical control commutation function of hydraulic system.
Compare with existing high-grade to-and-fro motion numerical control device; The utility model does not need costliness and the electro-hydraulic servo Proportional valve harsh to service condition; And the previous electro-hydraulic position closed loop of order is split into the hydraulic pressure position closed loop of numerical controlled machinery position closed loop and linear machine hydraulic servo composition; The position closed loop that is about to a complicacy splits into two simple relatively position closed loops; The debugging of system is become simply, improved the reliability of system works, reduced user of service's the technical requirements and the composition cost of system.
Compare with the numerical control method that adopts the special-purpose rotary valve of special honing; Owing to just replaced the special-purpose rotary valve of honing with linear mechanical hydraulic efficiency servo-valve commonly used; The linear motion of honing main shaft linear motion direct and spool constitutes the following position closed loop, need the linear motion of main shaft be transformed into to rotatablely move, and does not more need complicated whirler liquid level to put closed loop; Its working principle, driving and feedback system, mechanical structure etc. are fully different; And because the machinery Hydraulic Servo valve is simple in structure, reduced the cost of construction system, and improved the convenience of system maintenance maintenance.
3, adopt the enlarger of the good machinery Hydraulic Servo valve of linear properties in the utility model as mechanical force; Can drive than heavy load; Application area also not only is confined to the reciprocal drive controlling of main shaft of plover mill machine, is applicable to that also other need numerical control and hydraulically powered various occasion.The machinery Hydraulic Servo valve of adapted can be that bilateral guiding valve also can be a four-side.
4, the digital control reverse driven gear of the utility model is under technical specifications such as same position control accuracy and switching-over speed of response; Its price have only import electro-hydraulic servo Proportional valve and special-purpose reversing rotary valve 1/3-1/5; Be position control accuracy simultaneously and the demanding high-grade hydraulic pressure switching-over numerical control drive unit of technical specifications such as switching-over speed of response, provide a kind of simple in structure, control is reliable, cheap, be convenient to adjust, the hydraulic reciprocating movement servo-actuated numerical control drive unit of operation and maintenance.
Description of drawings
Accompanying drawing 1 is the utility model embodiment 1 a structural representation;
Accompanying drawing 2 is the utility model embodiment 2 a structural representation;
Accompanying drawing 3 is the utility model embodiment 3 a structural representation;
Accompanying drawing 4 is the utility model embodiment 4 a structural representation.
Embodiment
Embodiment 1:
As shown in Figure 1; 1 is that digital controller, 2 is that servo driver, 8 is actuating motor, and digital controller, servo driver and actuating motor link to each other through cable, want according to the displacement of oil hydraulic cylinder 10; Set through digital controller, the pressure of hydraulic system is to provide through oil hydraulic pump 9.During work; According to the program that sets; Servo driver sends instruction turns clockwise actuating motor; Through being installed in active profile of tooth belt wheel 7 on the actuating motor output shaft, and the supporting passive profile of tooth belt wheel 3 of profile of tooth belt wheel and be installed in the reciprocating drive mechanism that the Toothed belt between profile of tooth belt wheel, the passive profile of tooth belt wheel 4 initiatively forms and be fixed on the link 5 on the toothed belt initiatively, change rotatablely moving of actuating motor the straight line motion of link 5 into, thereby the spool 14 that drives in the machinery Hydraulic Servo valve that links to each other with link moves down; Connect oil hydraulic cylinder to underpass, the piston rod 11 in the oil hydraulic cylinder is moved down.When piston rod 11 moved down, through connecting the bindiny mechanism 13 of the valve body 12 in piston rod and the machinery Hydraulic Servo valve, the valve body 12 that drives in the machinery Hydraulic Servo valve moved down, and the drive valve body is followed spool and moved down.When moving to desired location; Digital controller sends instruction, through servo driver actuating motor is rotated counterclockwise, and the spool 14 that drives in the machinery Hydraulic Servo valve moves up; Connect the upwards path of oil hydraulic cylinder; Piston rod is moved up, and the drive valve body is followed spool and is moved up, thereby has constituted the reciprocal followup system of the hydraulic pressure of being made up of actuating motor, spool, piston rod, valve body.
Be the stability that guarantees that link 5 moves up and down, link can be installed on the online rail 6.
Embodiment 2:
As shown in Figure 2; On embodiment 1 basis; Become the reciprocating drive mechanism that chain becomes with being installed in the reciprocating drive mechanism that toothed belt is formed on the actuating motor output shaft; Promptly on the actuating motor output shaft, be equipped with drive sprocket 17, and drive sprocket corresponding by movable sprocket 15 and the reciprocating drive mechanism that is installed in drive sprocket, formed by the chain between the movable sprocket 16, an end of link 5 links to each other with spool 14 in the machinery Hydraulic Servo valve, the other end is fixed on the chain.Other parts are identical with embodiment 1.
Embodiment 3:
As shown in Figure 3; On embodiment 1 basis, become the reciprocating drive mechanism that leading screw, nut are formed with being installed in reciprocating drive mechanism that toothed belt on the actuating motor output shaft forms, leading screw 18 promptly is installed on the actuating motor output shaft; Feed screw nut 19 is fixedly linked with link 5; One end of link 5 links to each other with spool in the machinery Hydraulic Servo valve, and the other end links to each other with nut, and other parts are identical with embodiment 1.
Embodiment 4:
As shown in Figure 4; On embodiment 1 basis; Become linear electric motor 20 with being installed in the reciprocating drive mechanism that toothed belt is formed on the actuating motor output shaft; One end of link 5 links to each other with spool in the machinery Hydraulic Servo valve, and the other end links to each other with linearly moving member 21 in the linear electric motor, and linear electric motor are controlled through digital controller 1 and servo driver 2.
Above-mentioned machinery Hydraulic Servo valve is exactly a mechanical hydraulic servo valve of the prior art.

Claims (6)

1. reciprocal servocontrol device of hydraulic pressure; Comprise hydraulic driving system and control system; It is characterized in that hydraulic driving system comprises the machinery Hydraulic Servo valve that oil hydraulic cylinder (10) and control oil hydraulic cylinder move back and forth; Valve body in the machinery Hydraulic Servo valve (12) is fixedly linked through the piston rod in bindiny mechanism and the oil hydraulic cylinder (11); One end of link (5) links to each other with spool (14) in the machinery Hydraulic Servo valve, and the other end links to each other with reciprocating drive mechanism, and reciprocating drive mechanism is controlled through numerical control system.
2. the reciprocal servocontrol device of hydraulic pressure according to claim 1; It is characterized in that the bindiny mechanism that the valve body (12) in the above-mentioned machinery Hydraulic Servo valve links to each other with piston rod (11) in the oil hydraulic cylinder is made up of the moving part (13) that is installed on the piston rod, the valve body in moving part and the machinery Hydraulic Servo valve is fixedly linked.
3. the reciprocal servocontrol device of hydraulic pressure according to claim 1 and 2; It is characterized in that above-mentioned reciprocating drive mechanism is by actuating motor (8), the active profile of tooth belt wheel (7) that is installed in the actuating motor output terminal, and the profile of tooth corresponding passive profile of tooth belt wheel of belt wheel (3) and be installed in initiatively the Toothed belt (4) between profile of tooth belt wheel, the passive profile of tooth belt wheel and form initiatively; One end of link (5) links to each other with spool (14) in the machinery Hydraulic Servo valve; The other end is fixed on the Toothed belt, and actuating motor (8) is controlled through control system.
4. the reciprocal servocontrol device of hydraulic pressure according to claim 1 and 2; It is characterized in that above-mentioned reciprocating drive mechanism by actuating motor (8), be installed in the actuating motor output terminal drive sprocket (18), and drive sprocket corresponding by movable sprocket (16) and be installed in drive sprocket, formed by the chain between the movable sprocket (17); One end of link (5) links to each other with spool (14) in the machinery Hydraulic Servo valve; The other end is fixed on the chain, and actuating motor (8) is controlled through control system.
5. the reciprocal servocontrol device of hydraulic pressure according to claim 1 and 2; It is characterized in that above-mentioned reciprocating drive mechanism by actuating motor (8), be installed in the leading screw (19) of actuating motor output terminal and the nut (20) that matches with leading screw is formed; One end of link (5) links to each other with spool (14) in the machinery Hydraulic Servo valve; The other end links to each other with nut, and actuating motor is controlled through control system.
6. the reciprocal servocontrol device of hydraulic pressure according to claim 1 and 2; It is characterized in that above-mentioned reciprocating drive mechanism is made up of linear electric motor (21); One end of link (5) links to each other with spool (14) in the machinery Hydraulic Servo valve; The other end links to each other with linearly moving member (22) in the linear electric motor, and linear electric motor are controlled through control system.
CN 201120077812 2011-03-23 2011-03-23 Hydraulic reciprocating servo control device Expired - Fee Related CN202203190U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201120077812 CN202203190U (en) 2011-03-23 2011-03-23 Hydraulic reciprocating servo control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201120077812 CN202203190U (en) 2011-03-23 2011-03-23 Hydraulic reciprocating servo control device

Publications (1)

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CN202203190U true CN202203190U (en) 2012-04-25

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Application Number Title Priority Date Filing Date
CN 201120077812 Expired - Fee Related CN202203190U (en) 2011-03-23 2011-03-23 Hydraulic reciprocating servo control device

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102192203A (en) * 2011-03-23 2011-09-21 宁夏银川大河数控机床有限公司 Hydraulic reciprocating follow-up control device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102192203A (en) * 2011-03-23 2011-09-21 宁夏银川大河数控机床有限公司 Hydraulic reciprocating follow-up control device

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120425

Termination date: 20190323

CF01 Termination of patent right due to non-payment of annual fee