CN101695816A - Low-speed high-torque high-thrust digital electro-hydraulic servo drive device - Google Patents
Low-speed high-torque high-thrust digital electro-hydraulic servo drive device Download PDFInfo
- Publication number
- CN101695816A CN101695816A CN200910070857A CN200910070857A CN101695816A CN 101695816 A CN101695816 A CN 101695816A CN 200910070857 A CN200910070857 A CN 200910070857A CN 200910070857 A CN200910070857 A CN 200910070857A CN 101695816 A CN101695816 A CN 101695816A
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- drive device
- thrust
- workbench
- low
- 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
Images
Abstract
The invention relates to a low-speed high-torque high-thrust digital electro-hydraulic servo drive device. Two hydraulic output ends of a two-way hydraulic pump are connected with a work bench drive device which is connected with a work bench, a first safety valve and a second safety valve are respectively arranged in parallel between the two hydraulic output ends of the two-way hydraulic pump, one hydraulic drive end of the work bench drive device is connected with a first hydraulic control valve and the other hydraulic drive end is connected with a second hydraulic control valve, the other end of the first hydraulic control valve and the other end of the second hydraulic control valve are together connected with an oil-recharging tank, a feedback grating is arranged corresponding to the work bench, and signals received by the signal input end of a servo motor are amplified by an amplifier after control signals sent by a control part are compared with work bench position signals fed back by the feedback grating through a comparer. The invention has the advantages of short transmission chain, small size, little inertia, high transmission precision, high transmission rigidity, good dynamic quality, impaction vibration resistance and lower cost.
Description
Technical field
The invention belongs to a kind of digital electro-hydraulic servo drive device, particularly relate to a kind of driving of Digit Control Machine Tool low-speed big rotational coordinates workpiece turntable or low-speed high-torque high-thrust digital electro-hydraulic servo drive device of low-speed high-thrust rectilinear coordinates of being used for.
Background technology
Nearly 30 years, Digit Control Machine Tool obtained fast-developing and has popularized in China, and the working motion of a Digit Control Machine Tool is by to five-axis linkage machine tools five of two numerically controlled lathe and three CNC milling machine, to the multiaxis development with complex function.Though being used for the rectilinear coordinates of Digit Control Machine Tool, current existing linear electric motors drive, the rotational coordinates that has the high pulling torque torque motor to be used for Digit Control Machine Tool directly drives, but because linear electric motors and torque motor cost an arm and a leg, shortcomings such as power of directly driving and moment deficiency can't be extensive use of.For rectilinear motion, the servomotor that is to use that current employing is more passes through the driving of ball-screw direct connection, when direct connection driving moment deficiency, when rotary inertia does not match, uses cog belt or low back clearance precision gear reductor to slow down.For the continuous rotation and the calibration setting movement of work spindle that needs numerical controlization and cutter spindle, adopt servomotor mostly and pass through the accurate reductor of large speed ratio to drive.When adopting the big retarding ratio speed reducer to drive, because the backlass and the driving error of reductor, greatly reduce transmission accuracy, while is owing to driving-chain is long, and reduced the rigidity of transmission, this will cause machine vibration, the efficient and the quality of influence processing, the life-span that also can reduce cutter and lathe.In addition, when linear drives power reaches tens tons, when the moment that rotation drives reached tens thousand of Nm, the mechanical reduction machine too greatly too remake and can't install, and inertia is too big on kinematics, and the dynamic quality that causes motion is too low and can't use.
Summary of the invention
The present invention provides a kind of driving of Digit Control Machine Tool low-speed big rotational coordinates workpiece turntable or low-speed high-torque high-thrust digital electro-hydraulic servo drive device of low-speed high-thrust rectilinear coordinates of being used for for solving the technical problem that exists in the known technology.。
The technical scheme that the present invention takes for the technical problem that exists in the solution known technology is: a kind of low-speed high-torque high-thrust digital electro-hydraulic servo drive device, include workbench, also be provided with servomotor and by the bidirectional hydraulic pump of driven by servomotor, two hydraulic pressure outputs of described bidirectional hydraulic pump connect Working table driving device, described Working table driving device connects the action that workbench is used to drive workbench, between two hydraulic pressure outputs of bidirectional hydraulic pump, first safety valve and second safety valve also have been arranged in parallel respectively, a hydraulic-driven end of described Working table driving device connects first hydraulic control one-way valve, another hydraulic-driven end connects second hydraulic control one-way valve, the other end of described first hydraulic control one-way valve is connected the repairing fuel tank jointly with the other end of second hydraulic control one-way valve, corresponding workbench also is provided with the feedback grating, the signal that signal input part received of described servomotor is, control part branch control signal of sending and the position signalling that feeds back the workbench that grating fed back after comparator compares, are carried out amplifying signal through amplifier again.
Described Working table driving device is to adopt two-way linear to drive hydraulic cylinder or employing hydraulic motor.
Described workbench is the workbench of two-way linear motion.
Described workbench is the two-way workbench that rotatablely moves.
Described first safety valve is opposite with the flow direction of second safety valve.
Described first hydraulic control one-way valve is opposite with the flow direction of second hydraulic control one-way valve.
Described feedback grating is the linear pattern grating, or round grating.
Advantage and good effect that the present invention has are: low-speed high-torque high-thrust digital electro-hydraulic servo drive device of the present invention has following characteristics:
1, driving-chain is short, and volume is little, and is in light weight, and inertia is little, the transmission accuracy height, and the transmission rigidity height, dynamic quality is good, anti shock and vibration, cost is lower;
2, with pure electric servomotor and hydraulic pump and fluid pressure drive device combination, form digital high-torque high-thrust electro-hydraulic servo drive device, the control high rigidity high thrust high pulling torque convenient and hydraulic actuating mechanism of servomotor is combined, improved the controllability of hydraulic actuating mechanism greatly, enlarged the scope of application of hydraulic gear, be applicable to that Digit Control Machine Tool low-speed big (1～100,000 Nm) rotational coordinates drives and the driving of low-speed high-thrust rectilinear coordinates;
3, compare with the electro-hydraulic servo drive device of traditional use electrohydraulic servo valve, have higher transmission efficiency and the reliability of Geng Gao, energy-conservation and do not generate heat.
Description of drawings
Fig. 1 is the structural representation of first embodiment of the present invention;
Fig. 2 is the structural representation of second embodiment of the present invention.
Label among the figure is respectively:
The 1-workbench; The 2-servomotor; 3-bidirectional hydraulic pump; The 4-Working table driving device; 5-feeds back grating; The 6-comparator; The 7-amplifier; 8-first safety valve; 9-second safety valve; 10-first hydraulic control one-way valve; 11-second hydraulic control one-way valve; 12-repairing fuel tank.
The specific embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, exemplify following examples now, and conjunction with figs. describes in detail of the present invention as follows:
As Fig. 1, shown in Figure 2, low-speed high-torque high-thrust digital electro-hydraulic servo drive device of the present invention, include workbench 1, the bidirectional hydraulic pump 3 that also is provided with servomotor 2 and drives by servomotor 2, two hydraulic pressure outputs of described bidirectional hydraulic pump 3 connect Working table driving device 4, described Working table driving device 4 connects the action that workbench 1 is used to drive workbench 1, also be arranged in parallel first safety valve 8 and second safety valve 9 between two hydraulic pressure outputs of bidirectional hydraulic pump 3 respectively, described first safety valve 8 is opposite with the flow direction of second safety valve 9.Described first safety valve 8 and second safety valve, 9 roles are in the anxious stopping time of servomotor, play the effect of buffering step-down, reduce the damage that causes pipeline because of pressure pulse.A hydraulic-driven end of described Working table driving device 4 connects first hydraulic control one-way valve 10, another hydraulic-driven end connects second hydraulic control one-way valve 11, and the other end of described first hydraulic control one-way valve 10 is connected repairing fuel tank 12 jointly with the other end of second hydraulic control one-way valve 11.Described first hydraulic control one-way valve 10 is opposite with the flow direction of second hydraulic control one-way valve 11.Corresponding workbench 1 also is provided with feedback grating 5, the signal that signal input part received of described servomotor 2 is, the position signalling of the workbench 1 that the control signal that the control part branch is sent and feedback grating 5 are fed back carries out amplifying signal through amplifier 7 again after comparator 6 compares.
Low-speed high-torque high-thrust digital electro-hydraulic servo drive device of the present invention, all adopt servomotor directly to drive the bidirectional hydraulic pump, thereby form the digital electric-hydraulic servopump, when electro-hydraulic servo pump and high thrust hydraulic cylinder formation high-thrust digital electro-hydraulic servo-cylinder, finish the low-speed high-thrust rectilinear coordinates with it and drive; When electro-hydraulic servo pump and high-torque hydraulic motor formation low-speed big digital electric hydraulic servo motor, can be used for the driving of low-speed big rotating shaft.
As shown in Figure 1, described Working table driving device 4 is the hydraulic cylinders that adopt two-way linear to drive, and described workbench 1 is the workbench of two-way linear motion, and described feedback grating 5 is the linear pattern grating
As shown in Figure 2, described Working table driving device 4 is to adopt hydraulic motor, and described workbench 1 is the two-way workbench that rotatablely moves, and described feedback grating 5 is round grating.
The course of work of low-speed high-torque high-thrust digital electro-hydraulic servo drive device of the present invention is, when workbench is worked, the current mobile status signal b of the workbench of control instruction signal a that comparator at first sends computer and grating feedback compares, when the feedback mobile status signal b greater than the control instruction signal a that computer sent, servomotor reverses; When the current mobile status signal b of workbench of feedback less than the control instruction signal a that computer sent, servomotor carries out operate as normal; When the feedback the current mobile status signal b of workbench equal the control instruction signal a that computer sends, servomotor quits work.
Claims (7)
1. low-speed high-torque high-thrust digital electro-hydraulic servo drive device, include workbench (1), it is characterized in that: the bidirectional hydraulic pump (3) that also is provided with servomotor (2) and drives by servomotor (2), two hydraulic pressure outputs of described bidirectional hydraulic pump (3) connect Working table driving device (4), described Working table driving device (4) connects the action that workbench (1) is used to drive workbench (1), first safety valve (8) and second safety valve (9) between two hydraulic pressure outputs of bidirectional hydraulic pump (3), also have been arranged in parallel respectively, a hydraulic-driven end of described Working table driving device (4) connects first hydraulic control one-way valve (10), another hydraulic-driven end connects second hydraulic control one-way valve (11), the other end of described first hydraulic control one-way valve (10) is connected repairing fuel tank (12) jointly with the other end of second hydraulic control one-way valve (11), corresponding workbench (1) also is provided with feedback grating (5), the signal that signal input part received of described servomotor (2) is, the position signalling of the workbench (1) that the control signal that the control part branch is sent and feedback grating (5) are fed back carries out amplifying signal through amplifier (7) again after comparator (6) compares.
2. low-speed high-torque high-thrust digital electro-hydraulic servo drive device according to claim 1 is characterized in that: described Working table driving device (4) is to adopt two-way linear to drive hydraulic cylinder or employing hydraulic motor.
3. low-speed high-torque high-thrust digital electro-hydraulic servo drive device according to claim 1 is characterized in that: described workbench (1) is the workbench of two-way linear motion.
4. low-speed high-torque high-thrust digital electro-hydraulic servo drive device according to claim 1 is characterized in that: described workbench (1) is the two-way workbench that rotatablely moves.
5. low-speed high-torque high-thrust digital electro-hydraulic servo drive device according to claim 1 is characterized in that: described first safety valve (8) is opposite with the flow direction of second safety valve (9).
6. low-speed high-torque high-thrust digital electro-hydraulic servo drive device according to claim 1 is characterized in that: described first hydraulic control one-way valve (10) is opposite with the flow direction of second hydraulic control one-way valve (11).
7. low-speed high-torque high-thrust digital electro-hydraulic servo drive device according to claim 1 is characterized in that: described feedback grating (5) is the linear pattern grating, or round grating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910070857A CN101695816A (en) | 2009-10-19 | 2009-10-19 | Low-speed high-torque high-thrust digital electro-hydraulic servo drive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910070857A CN101695816A (en) | 2009-10-19 | 2009-10-19 | Low-speed high-torque high-thrust digital electro-hydraulic servo drive device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101695816A true CN101695816A (en) | 2010-04-21 |
Family
ID=42140961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910070857A Pending CN101695816A (en) | 2009-10-19 | 2009-10-19 | Low-speed high-torque high-thrust digital electro-hydraulic servo drive device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101695816A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671311A (en) * | 2013-11-21 | 2014-03-26 | 山河智能装备股份有限公司 | Motor energy saving system of open type hydraulic system |
| CN104122034A (en) * | 2013-04-24 | 2014-10-29 | 哈尔滨飞机工业集团有限责任公司 | Helicopter main blade dynamic balancing test bed hydraulic drive system |
| CN108757879A (en) * | 2018-05-25 | 2018-11-06 | 太原理工大学 | A kind of hydraulic-machinery combined driving device |
-
2009
- 2009-10-19 CN CN200910070857A patent/CN101695816A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104122034A (en) * | 2013-04-24 | 2014-10-29 | 哈尔滨飞机工业集团有限责任公司 | Helicopter main blade dynamic balancing test bed hydraulic drive system |
| CN103671311A (en) * | 2013-11-21 | 2014-03-26 | 山河智能装备股份有限公司 | Motor energy saving system of open type hydraulic system |
| CN108757879A (en) * | 2018-05-25 | 2018-11-06 | 太原理工大学 | A kind of hydraulic-machinery combined driving device |
| CN108757879B (en) * | 2018-05-25 | 2021-07-23 | 太原理工大学 | Hydraulic-mechanical composite driving device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101767285B (en) | Mechanical main shaft type AC double-swinging-angle numerical control milling head | |
| CN102500914B (en) | Hydraulic servo control phase friction welding method | |
| CN105291100A (en) | Mechanical arm working at multiple angles | |
| CN201529980U (en) | Multi-freedom-degree rotating device | |
| CN103481069A (en) | Rotary workbench and upright type turning and milling composite machine tool | |
| CN201521512U (en) | Digital electro-hydraulic servo driving device adopting servo motor for direct drive | |
| CN202655913U (en) | Rotary type workbench and vertical type turn milling compound machine tool | |
| CN101695816A (en) | Low-speed high-torque high-thrust digital electro-hydraulic servo drive device | |
| CN201807900U (en) | Double-worm closed loop rotary work table | |
| EP2682231B1 (en) | Reciprocating servo control device for mainshaft of honing machine | |
| CN207806839U (en) | A kind of intersection-line cutting machine of achievable chuck automatic displacement | |
| CN101979202B (en) | Face gear numerical control machining device and machining method | |
| CN202021540U (en) | Linear motor driving device for reciprocating follow-up control of spindle of honing machine | |
| CN102189481B (en) | Honing machine spindle reciprocating follow-up control toothed belt driving device | |
| CN2454054Y (en) | Hydraulic inlet side-guiding-board in front of coiling device | |
| CN106958554A (en) | Direct feedback digital wobble hydraulic cylinder is driven in a kind of | |
| CN102189480B (en) | Reciprocating follow-up control linear motor driving device for main shaft of honing machine | |
| CN103128584A (en) | Locking device of five-shaft rotary head spindle head | |
| CN201807901U (en) | Double-worm precision numerical-controlled rotary operating platform | |
| CN108747505A (en) | Rotational positioning processes clamping device | |
| CN201998043U (en) | Cog belt driving device for controlling reciprocating follow-up of main shaft of honing machine | |
| CN206169720U (en) | Electronic unclamping cylinder and encoder that is used for electronic unclamping cylinder | |
| CN102152135A (en) | Hybrid-drive heavy-load two-degree-of-freedom positioner for hydraulic screw rod | |
| CN202097649U (en) | Drive device for reciprocating servo-actuated control chain of honing machine main shaft | |
| CN101941155A (en) | Double-worm precision numerically controlled rotary table |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100421 |