CN105065364A - Numerical control oval oil cylinder - Google Patents
Numerical control oval oil cylinder Download PDFInfo
- Publication number
- CN105065364A CN105065364A CN201510498074.7A CN201510498074A CN105065364A CN 105065364 A CN105065364 A CN 105065364A CN 201510498074 A CN201510498074 A CN 201510498074A CN 105065364 A CN105065364 A CN 105065364A
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- Prior art keywords
- oval
- cylinder
- leading screw
- oil
- piston
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- 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
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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
-
- 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
Abstract
The invention provides a numerical control oval oil cylinder. A servo motor is arranged at the top end of a valve. A cylinder body is arranged at the bottom end of the valve. The servo motor is connected with the top end of a coupler. The bottom end of the coupler is connected with the top end of a valve element through a valve element lead screw. The bottom end of the valve element is connected with the top end of a lead screw coupler through a valve lead screw. A first oil outlet, a second oil outlet, an oil inlet and an oil returning port are formed between the valve element and the valve lead screw. The first oil outlet and the second oil outlet are formed in the same side of the valve, and the oil inlet and the oil returning port are formed in the other side of the valve. The bottom end of the lead screw coupler is connected with the top end of the bearing. The bottom end of the bearing is connected with the top end of a piston through a piston lead screw and a lead screw nut. An oval piston rod is arranged at the bottom end of the piston and is of a structure with the oval cross section. An oval cylinder opening flange is arranged at the bottom end of the cylinder body. An oval guiding flange is arranged on the outer side of the bottom end of the cylinder body. The numerical control oval oil cylinder has the effects that the position control precision is high, and the movement speed can be set and controlled.
Description
Technical field
The present invention relates to technical field of hydraulic pressure, more particularly, relate to the oval oil cylinder of a kind of numerical control.
Background technique
Oil cylinder and oil hydraulic cylinder, oil hydraulic cylinder is the straight line moving type executive component that the pressure reduction on ouput force and piston effective area and both sides thereof is directly proportional.Hydraulic energy is changed into mechanical energy, does the hydraulic actuator of straight reciprocating motion (or oscillating motion) by oil hydraulic cylinder.Its structure is simple, reliable operation.When realizing to-and-fro motion with it, can speed reducer be removed from, and there is no drive gap, stable movement, therefore be used widely in the hydraulic system of various machinery.The pressure reduction on oil hydraulic cylinder ouput force and piston effective area and both sides thereof is directly proportional; Oil hydraulic cylinder is made up of cylinder barrel and cylinder cap, piston and piston rod, seal arrangement, damping device and venting gas appliance substantially.
Oil hydraulic cylinder is divided into piston-type hydraulic cylinder, pillar oil hydraulic cylinder, telescoping hydraulic cylinder and spiral swing hydranlic pressure jar.Wherein, single-piston-rod hydraulic cylinder only has one end to have piston rod, and oil is imported and exported at its two ends all can lead to pressure oil or oil return, to realize bidirectional-movement, therefore be called double acting cylinder, piston only can unidirectional movement, its motion in the other direction need have been come by external force, but its stroke is general large compared with piston-type hydraulic cylinder; Plunger type cylinder is a kind of single-acting formula oil hydraulic cylinder, can only realize the motion in a direction by hydraulic coupling, plunger backhaul will lean on the deadweight of other external force or plunger, and plunger does not only contact with cylinder sleeve by cylinder sleeve supporting, such cylinder sleeve is very easily processed, therefore be suitable for doing Long travel oil hydraulic cylinder, plunger total pressurized during work, thus it must have enough rigidity, plunger weight is often larger, easily sagging because of deadweight during horizontal positioned, cause Sealing and guiding uneven wear, therefore it vertically uses more favourable; Telescoping hydraulic cylinder has secondary or multi-level piston, the sequential that in telescoping hydraulic cylinder, piston stretches out from big to small, unloaded order of retracting is generally then from small to large, telescopic cylinder can realize longer stroke, and when retracting, length is shorter, and structure is comparatively compact, this kind of oil hydraulic cylinder is usually used on engineering machinery and farm machinery, have multiple piston once moved, when each piston successively moves, its output speed and ouput force are all changes; Spiral swing hydranlic pressure jar is output torque and realizes reciprocating executive component, there is several form such as single blade, double-leaf, spiral swing, blade type formula: stator block is fixed on cylinder body, and blade and rotor link together, according to oil-feed direction, rotor driven is made reciprocally swinging by blade, spiral swing type divides again single-screw to swing and double helix two kinds, present double helix is more conventional, the translate linear motion falling piston in hydraulic cylinder by two screw pairs is the compound motion of straight line motion and spinning motion, thus realizes oscillating motion.
Summary of the invention
Instant invention overcomes deficiency of the prior art, provide the oval oil cylinder of a kind of numerical control.
Object of the present invention is achieved by following technical proposals.
The oval oil cylinder of a kind of numerical control, comprise actuating motor, valve body and cylinder body, described actuating motor is arranged on described valve body top, described cylinder body is arranged on described valve body bottom, described cylinder body adopts cross section to be oval hollow structure, coupling is provided with in described valve body, spool leading screw, spool, valve body leading screw and leading screw coupling, described actuating motor is connected with described coupling top, described coupling bottom is connected with described spool top by described spool leading screw, described spool bottom is connected with described leading screw coupling top by described valve body leading screw, the first oil outlet is provided with between described spool and described valve body leading screw, second oil outlet, filler opening and return opening, described first oil outlet and described second oil outlet are arranged on described valve body the same side, described filler opening and described return opening are arranged on described valve body opposite side, described first oil outlet and described second oil outlet are higher than described filler opening and described return opening, bearing is provided with in described cylinder body, piston leading screw, feed screw nut, piston, oval cylinder mouth flange and oval piston bar, described leading screw coupling bottom is connected with described bearing top, described bearing bottom is connected with described piston tip by described piston leading screw and described feed screw nut, described piston bottom end is arranged on described oval piston bar, described oval piston bar adopts cross section to be oval structure, described oval cylinder mouth flange is arranged on described cylinder body bottom, oval guide flange is also provided with at described cylinder body Basolateral.
The first return line is provided with between described piston leading screw and described cylinder body, described first oil outlet is connected with described first return line by the first pipeline, between described oval piston bar and described cylinder body, be provided with the second return line, described second oil outlet is connected with described second return line by the second pipeline.
Described first oil outlet is connected with described first return line top by the first pipeline, and described second oil outlet is connected with described second return line bottom by the second pipeline.
Described oval cylinder mouth flange is arranged on below described second return line bottom.
Beneficial effect of the present invention is: compared with prior art, and the present invention, owing to being provided with actuating motor, by setting the relevant parameter of actuating motor, thus can set and control the motion speed of this oval numerical control oil cylinder; The setting of actuating motor also makes the positioning control validity of this oval numerical control oil cylinder greatly improve, and by arranging actuating motor, thus controls the position of oil cylinder operation, therefore the positioning control validity of this oval numerical control oil cylinder is greatly enhanced; Oval cylinder mouth flange, the setting of oval piston bar and oval guide flange, so oval piston bar can not rotation, therefore be born with and have very strong steering capability and do not need outer guiding device to lead to it in the oval oil cylinder sky of this numerical control, thus save outer guiding device, save cost, also make the structure of the oval oil cylinder of this numerical control more simple, have structure simple, easy to maintenance, processing cost is low, manufacturing efficiency advantages of higher.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
In figure: 01 is actuating motor, 02 is coupling, and 03 is spool leading screw, and 04 is spool, 05 is valve body, and 06 is valve body leading screw, and 07 is leading screw coupling, 08 is bearing, and 09 is piston leading screw, and 10 is feed screw nut, 11 is piston, and 12 is oval cylinder mouth flange, and 13 is cylinder body, 14 is oval piston bar, and 15 is oval guide flange, and A is the first oil outlet, B is the second oil outlet, and P is filler opening, and T is return opening.
Embodiment
Below by specific embodiment, technological scheme of the present invention is further described.
As shown in Figure 1, wherein, 01 is actuating motor, and 02 is coupling, 03 is spool leading screw, and 04 is spool, and 05 is valve body, and 06 is valve body leading screw, 07 is leading screw coupling, and 08 is bearing, and 09 is piston leading screw, and 10 is feed screw nut, 11 is piston, and 12 is oval cylinder mouth flange, and 13 is cylinder body, 14 is oval piston bar, and 15 is oval guide flange, and A is the first oil outlet, B is the second oil outlet, and P is filler opening, and T is return opening.
Embodiment 1
The oval oil cylinder of a kind of numerical control, comprise actuating motor 01, valve body 05 and cylinder body 13, actuating motor 01 is arranged on valve body 05 top, cylinder body 13 is arranged on valve body 05 bottom, cylinder body 13 adopts cross section to be oval hollow structure, coupling 02 is provided with in valve body 05, spool leading screw 03, spool 04, valve body leading screw 06 and leading screw coupling 07, actuating motor 01 is connected with coupling 02 top, coupling 02 bottom is connected with spool 04 top by spool leading screw 03, spool 04 bottom is connected with leading screw coupling 07 top by valve body leading screw 06, the first oil outlet A is provided with between spool 04 and valve body leading screw 06, second oil outlet B, oil inlet P and oil return inlet T, first oil outlet A and the second oil outlet B is arranged on valve body 05 the same side, oil inlet P and oil return inlet T are arranged on valve body 05 opposite side, first oil outlet A and the second oil outlet B is higher than oil inlet P and oil return inlet T, bearing 08 is provided with in cylinder body 13, piston leading screw 09, feed screw nut 10, piston 11, oval cylinder mouth flange 12 and oval piston bar 14, leading screw coupling 07 bottom is connected with bearing 08 top, bearing 08 bottom is connected with piston 11 top by piston leading screw 09 and feed screw nut 10, piston 11 bottom is arranged on oval piston bar 14, oval piston bar 14 adopts cross section to be oval structure, oval cylinder mouth flange 12 is arranged on cylinder body 13 bottom, oval guide flange 15 is also provided with at cylinder body 13 Basolateral.
The first return line is provided with between piston leading screw 09 and cylinder body 13, first oil outlet A is connected with the first return line by the first pipeline, between oval piston bar 14 and cylinder body 13, be provided with the second return line, the second oil outlet B is connected with the second return line by the second pipeline.
First oil outlet A is connected with the first return line top by the first pipeline, and the second oil outlet B is connected with the second return line bottom by the second pipeline.
Oval cylinder mouth flange 12 is arranged on below the second return line bottom.
Working procedure: after actuating motor 01 receives instruction, be with movable valve plug leading screw 03 to rotate by coupling 02 and promote spool 04 and move, suppose that spool 04 moves up, hydraulic pressure oil is made to be entered into the epicoele of cylinder body 13 through the first oil outlet A by oil inlet P, the fluid of cylinder body 13 cavity of resorption is back in oil return inlet T through the second oil outlet B of spool 04, then piston 11 promotes oval piston bar 14 and moves down, while piston 11 moves down, feed screw nut 10 also moves down thereupon, the movement of feed screw nut 10 forces piston leading screw 09 to rotate, the rotation of piston leading screw 09 is with moving valve leading screw 06 to rotate by by leading screw coupling 07, under the effect of valve body leading screw 06, make valve body 05 also move down, close dead first oil outlet A respectively subsequently, second oil outlet B, the oil circuit of oil inlet P and oil return inlet T, slack on the position making oval piston bar 14 be moved down into required by instruction, when sending to the instruction of actuating motor 01 to be reverse signal, oval piston bar 14 is moved upwards up on the position required by instruction slack, because have oval cylinder mouth flange 12, the existence of oval piston bar 14 and oval guide flange 15, oval piston bar 14 just can not rotation, has very strong steering capability so be born with in the oval oil cylinder sky of numerical control and do not need outer guiding device.
Compared with prior art, owing to being provided with actuating motor, by setting the relevant parameter of actuating motor, thus can set and control the motion speed of this oval numerical control oil cylinder; The setting of actuating motor also makes the positioning control validity of this oval numerical control oil cylinder greatly improve, and by arranging actuating motor, thus controls the position of oil cylinder operation, therefore the positioning control validity of this oval numerical control oil cylinder is greatly enhanced; Oval cylinder mouth flange, the setting of oval piston bar and oval guide flange, so oval piston bar can not rotation, therefore be born with and have very strong steering capability and do not need outer guiding device to lead to it in the oval oil cylinder sky of this numerical control, thus save outer guiding device, save cost, also make the structure of the oval oil cylinder of this numerical control more simple, have structure simple, easy to maintenance, processing cost is low, manufacturing efficiency advantages of higher.
Embodiment 2
The oval oil cylinder of a kind of numerical control, comprise actuating motor 01, valve body 05 and cylinder body 13, actuating motor 01 is arranged on valve body 05 top, cylinder body 13 is arranged on valve body 05 bottom, cylinder body 13 adopts cross section to be oval hollow structure, coupling 02 is provided with in valve body 05, spool leading screw 03, spool 04, valve body leading screw 06 and leading screw coupling 07, actuating motor 01 is connected with coupling 02 top, coupling 02 bottom is connected with spool 04 top by spool leading screw 03, spool 04 bottom is connected with leading screw coupling 07 top by valve body leading screw 06, the first oil outlet A is provided with between spool 04 and valve body leading screw 06, second oil outlet B, oil inlet P and oil return inlet T, first oil outlet A and the second oil outlet B is arranged on valve body 05 the same side, oil inlet P and oil return inlet T are arranged on valve body 05 opposite side, first oil outlet A and the second oil outlet B is higher than oil inlet P and oil return inlet T, bearing 08 is provided with in cylinder body 13, piston leading screw 09, feed screw nut 10, piston 11, oval cylinder mouth flange 12 and oval piston bar 14, leading screw coupling 07 bottom is connected with bearing 08 top, bearing 08 bottom is connected with piston 11 top by piston leading screw 09 and feed screw nut 10, piston 11 bottom is arranged on oval piston bar 14, oval piston bar 14 adopts cross section to be oval structure, oval cylinder mouth flange 12 is arranged on cylinder body 13 bottom, oval guide flange 15 is also provided with at cylinder body 13 Basolateral.
Embodiment 3
The oval oil cylinder of a kind of numerical control, comprise actuating motor 01, valve body 05 and cylinder body 13, actuating motor 01 is arranged on valve body 05 top, cylinder body 13 is arranged on valve body 05 bottom, cylinder body 13 adopts cross section to be oval hollow structure, coupling 02 is provided with in valve body 05, spool leading screw 03, spool 04, valve body leading screw 06 and leading screw coupling 07, actuating motor 01 is connected with coupling 02 top, coupling 02 bottom is connected with spool 04 top by spool leading screw 03, spool 04 bottom is connected with leading screw coupling 07 top by valve body leading screw 06, the first oil outlet A is provided with between spool 04 and valve body leading screw 06, second oil outlet B, oil inlet P and oil return inlet T, first oil outlet A and the second oil outlet B is arranged on valve body 05 the same side, oil inlet P and oil return inlet T are arranged on valve body 05 opposite side, first oil outlet A and the second oil outlet B is higher than oil inlet P and oil return inlet T, bearing 08 is provided with in cylinder body 13, piston leading screw 09, feed screw nut 10, piston 11, oval cylinder mouth flange 12 and oval piston bar 14, leading screw coupling 07 bottom is connected with bearing 08 top, bearing 08 bottom is connected with piston 11 top by piston leading screw 09 and feed screw nut 10, piston 11 bottom is arranged on oval piston bar 14, oval piston bar 14 adopts cross section to be oval structure, oval cylinder mouth flange 12 is arranged on cylinder body 13 bottom, oval guide flange 15 is also provided with at cylinder body 13 Basolateral.
The first return line is provided with between piston leading screw 09 and cylinder body 13, first oil outlet A is connected with the first return line by the first pipeline, between oval piston bar 14 and cylinder body 13, be provided with the second return line, the second oil outlet B is connected with the second return line by the second pipeline.
Embodiment 4
The oval oil cylinder of a kind of numerical control, comprise actuating motor 01, valve body 05 and cylinder body 13, actuating motor 01 is arranged on valve body 05 top, cylinder body 13 is arranged on valve body 05 bottom, cylinder body 13 adopts cross section to be oval hollow structure, coupling 02 is provided with in valve body 05, spool leading screw 03, spool 04, valve body leading screw 06 and leading screw coupling 07, actuating motor 01 is connected with coupling 02 top, coupling 02 bottom is connected with spool 04 top by spool leading screw 03, spool 04 bottom is connected with leading screw coupling 07 top by valve body leading screw 06, the first oil outlet A is provided with between spool 04 and valve body leading screw 06, second oil outlet B, oil inlet P and oil return inlet T, first oil outlet A and the second oil outlet B is arranged on valve body 05 the same side, oil inlet P and oil return inlet T are arranged on valve body 05 opposite side, first oil outlet A and the second oil outlet B is higher than oil inlet P and oil return inlet T, bearing 08 is provided with in cylinder body 13, piston leading screw 09, feed screw nut 10, piston 11, oval cylinder mouth flange 12 and oval piston bar 14, leading screw coupling 07 bottom is connected with bearing 08 top, bearing 08 bottom is connected with piston 11 top by piston leading screw 09 and feed screw nut 10, piston 11 bottom is arranged on oval piston bar 14, oval piston bar 14 adopts cross section to be oval structure, oval cylinder mouth flange 12 is arranged on cylinder body 13 bottom, oval guide flange 15 is also provided with at cylinder body 13 Basolateral.
The first return line is provided with between piston leading screw 09 and cylinder body 13, first oil outlet A is connected with the first return line by the first pipeline, between oval piston bar 14 and cylinder body 13, be provided with the second return line, the second oil outlet B is connected with the second return line by the second pipeline.
First oil outlet A is connected with the first return line top by the first pipeline, and the second oil outlet B is connected with the second return line bottom by the second pipeline.
Above to invention has been detailed description, but described content is only preferred embodiment of the present invention, can not be considered to for limiting practical range of the present invention.All equalizations done according to the present patent application scope change and improve, and all should still belong within patent covering scope of the present invention.
Claims (4)
1. the oval oil cylinder of numerical control, it is characterized in that: comprise actuating motor, valve body and cylinder body, described actuating motor is arranged on described valve body top, described cylinder body is arranged on described valve body bottom, described cylinder body adopts cross section to be oval hollow structure, coupling is provided with in described valve body, spool leading screw, spool, valve body leading screw and leading screw coupling, described actuating motor is connected with described coupling top, described coupling bottom is connected with described spool top by described spool leading screw, described spool bottom is connected with described leading screw coupling top by described valve body leading screw, the first oil outlet is provided with between described spool and described valve body leading screw, second oil outlet, filler opening and return opening, described first oil outlet and described second oil outlet are arranged on described valve body the same side, described filler opening and described return opening are arranged on described valve body opposite side, described first oil outlet and described second oil outlet are higher than described filler opening and described return opening, bearing is provided with in described cylinder body, piston leading screw, feed screw nut, piston, oval cylinder mouth flange and oval piston bar, described leading screw coupling bottom is connected with described bearing top, described bearing bottom is connected with described piston tip by described piston leading screw and described feed screw nut, described piston bottom end is arranged on described oval piston bar, described oval piston bar adopts cross section to be oval structure, described oval cylinder mouth flange is arranged on described cylinder body bottom, oval guide flange is also provided with at described cylinder body Basolateral.
2. the oval oil cylinder of a kind of numerical control according to claim 1, it is characterized in that: between described piston leading screw and described cylinder body, be provided with the first return line, described first oil outlet is connected with described first return line by the first pipeline, between described oval piston bar and described cylinder body, be provided with the second return line, described second oil outlet is connected with described second return line by the second pipeline.
3. the oval oil cylinder of a kind of numerical control according to claim 2, it is characterized in that: described first oil outlet is connected with described first return line top by the first pipeline, described second oil outlet is connected with described second return line bottom by the second pipeline.
4. the oval oil cylinder of a kind of numerical control according to claim 2, is characterized in that: described oval cylinder mouth flange is arranged on below described second return line bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510498074.7A CN105065364B (en) | 2015-08-13 | 2015-08-13 | A kind of numerical control ellipse oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510498074.7A CN105065364B (en) | 2015-08-13 | 2015-08-13 | A kind of numerical control ellipse oil cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105065364A true CN105065364A (en) | 2015-11-18 |
| CN105065364B CN105065364B (en) | 2017-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510498074.7A Active CN105065364B (en) | 2015-08-13 | 2015-08-13 | A kind of numerical control ellipse oil cylinder |
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| Country | Link |
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| CN (1) | CN105065364B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3835945C1 (en) * | 1988-10-21 | 1990-02-01 | Nlw Foerdertechnik Gmbh, 4232 Xanten, De | Telescopic cylinder |
| DE4237852A1 (en) * | 1992-11-10 | 1994-05-11 | Fichtel & Sachs Ag | Hydraulic positioning cylinder for friction clutch of motor vehicle - has motor-stepped control valve integrated into piston for selective connection of working space to pressure source or sink |
| US20050091972A1 (en) * | 2003-10-31 | 2005-05-05 | Redman Kenneth K. | Electrohydraulic actuator |
| CN101008413A (en) * | 2007-01-12 | 2007-08-01 | 路文忠 | Electrohydraulic servo oil cylinder and numerical control machine tool using same |
| CN102287416A (en) * | 2011-09-01 | 2011-12-21 | 无锡市长江液压缸厂 | Numeric hydraulic cylinder |
| CN103075385A (en) * | 2011-10-26 | 2013-05-01 | 北京精密机电控制设备研究所 | Electric servo oil cylinder |
| CN205001280U (en) * | 2015-08-13 | 2016-01-27 | 天津市泉龙工贸有限公司 | Oval hydro -cylinder of numerical control |
-
2015
- 2015-08-13 CN CN201510498074.7A patent/CN105065364B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3835945C1 (en) * | 1988-10-21 | 1990-02-01 | Nlw Foerdertechnik Gmbh, 4232 Xanten, De | Telescopic cylinder |
| DE4237852A1 (en) * | 1992-11-10 | 1994-05-11 | Fichtel & Sachs Ag | Hydraulic positioning cylinder for friction clutch of motor vehicle - has motor-stepped control valve integrated into piston for selective connection of working space to pressure source or sink |
| US20050091972A1 (en) * | 2003-10-31 | 2005-05-05 | Redman Kenneth K. | Electrohydraulic actuator |
| CN101008413A (en) * | 2007-01-12 | 2007-08-01 | 路文忠 | Electrohydraulic servo oil cylinder and numerical control machine tool using same |
| CN102287416A (en) * | 2011-09-01 | 2011-12-21 | 无锡市长江液压缸厂 | Numeric hydraulic cylinder |
| CN103075385A (en) * | 2011-10-26 | 2013-05-01 | 北京精密机电控制设备研究所 | Electric servo oil cylinder |
| CN205001280U (en) * | 2015-08-13 | 2016-01-27 | 天津市泉龙工贸有限公司 | Oval hydro -cylinder of numerical control |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105065364B (en) | 2017-12-26 |
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Effective date of registration: 20190304 Address after: 300000 Changqingke Industrial and Trade Park, Jinnan District, Tianjin 1501J, No. 75 Chongqing Street (Changqing Building) Patentee after: Tianjin Zhengcheng Urban Infrastructure Investment Co., Ltd. Address before: 300000 Yingsheng Road and Hongming Road, Xiying Men Street, Xiqing District, Tianjin Co-patentee before: Zhao Xiaobo Patentee before: Tianjin Quan Long Trade Co., Ltd. |
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