CN203892308U - Servo-motor-direct-driving numerical-control stroke accurately-positioning hydraulic cylinder - Google Patents
Servo-motor-direct-driving numerical-control stroke accurately-positioning hydraulic cylinder Download PDFInfo
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- CN203892308U CN203892308U CN201420336713.0U CN201420336713U CN203892308U CN 203892308 U CN203892308 U CN 203892308U CN 201420336713 U CN201420336713 U CN 201420336713U CN 203892308 U CN203892308 U CN 203892308U
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Abstract
The utility model discloses a servo-motor-direct-driving numerical-control stroke accurately-positioning hydraulic cylinder, and belongs to the field of hydraulic machines. The servo-motor-direct-driving numerical-control stroke accurately-positioning hydraulic cylinder comprises a servo motor, a speed reducer, an input shaft, a cylinder body end cover, an adjustment sleeve, a trapezoid screw, an impacting block and a piston rod. An output shaft of the servo motor is directly inserted into the input end of the speed reducer to be fastened through first screws and a first spring washer. The output end of the speed reducer and a speed reducer installation flange are fastened through second screws and a second spring washer. A speed reducer installation pressing sleeve is installed outside the speed reducer installation flange. The outer circle of a step at the lower end of the speed reducer installation flange is inserted into a spigot in the upper end face of the cylinder body end cover in a matched mode. The speed reducer installation pressing sleeve and the cylinder body end cover are fastened through third screws and a third spring washer. The trapezoid screw and the input shaft are split and axially positioned through two attachment-preventing thrust washers. By means of the servo-motor-direct-driving numerical-control stroke accurately-positioning hydraulic cylinder, the high positioning accuracy and the repeated positioning accuracy can be achieved, the transmission error is small, and the adjustment and maintenance difficulty and cost are low.
Description
Technical field
The invention belongs to hydraulic press field, more particularly, relate to a kind of requirement to the oil hydraulic cylinder on slide block or the pinpoint hydraulic press of mould.
Background technique
Hydraulic press class has accurate positioning requirements as hydraulic drawing press, punching hydraulic press, hydraulic straightening machine, press hydraulic machine, hydraulic extrusion press, pressing hydraulic machine, impression hydraulic press, die spotting hydr aulic presses machine etc.Single-cylinder hydraulic machine (being designed with now nominal pressure 4000kN oil hydraulic cylinder) just can directly adopt actuating motor directly to drive the accurate positioning hydraulic cylinders of data stroke as C type hydraulic single column press, four-column hydraulic press, frame hydraulic press etc.For Multi-cylinder hydraulic press or great tonnage hydraulic machine, if mechanically take necessarily to guarantee synchronisation measures, as mounting guide rail or gear, rack synchronous mechanism or torsion shaft etc., in hydraulic system, adopt synchronizing circuit design, as synchronous valve or series flow control valve etc. are installed, adopt two or many actuating motors directly to drive the accurate positioning hydraulic cylinders of data stroke and also can meet the performance requirement of hydraulic press completely.Other hydraulic machineries, as at hydraulic pressure ring rolls, hydrolic plate bender, multifunction hydraulic plate bending machine, hydraulic pipe bender, hydraulic spinning machine etc., all have broad application prospects.
No matter be single cylinder or Multi-cylinder hydraulic press, slider of hydraulic press or mould location adopt following several method substantially now:
(1) adopt cylinder process terminal location, by changing piston rod and slide block link position, regulate;
(2) adopt the internal or external collision block of oil hydraulic cylinder location, by changing the relative position of slide block and hydraulic cylinder piston, regulate;
(3) design on slide block or mould, installation mechanical positioner location (generally with damping device); Above three kinds of orientation types are referred to as machinery location;
(4) by electrichydraulic control cylinder process terminal, locate, as electro-hydraulic stepping cylinder, servocylinder, digital cylinder, positional cylinder, magnetic piston cylinder etc.;
(5) adopt electro-hydraulic servo (ratio) hydraulic system, grating scale, numerical control system to control, can realize single cylinder or multi-cylinder is accurately located, can reach ± 0.02mm of positioning precision (relevant with ram travel etc.), repetitive positioning accuracy can reach 0.02mm.
Above-mentioned the 4th, 5 two kinds are referred to as electric liquid location.In practice, also have machinery location and hydraulic pressure location to adopt simultaneously, especially in some hydraulic press technical specifications, safety specifications or Reliability Assessment Method, require machinery location, hydraulic pressure location use, but emphasis is different.In machinery location, the 1st kind will reach certain positioning precision adjusting difficulty, waste time and energy; The 2nd kind is easy to adjust, simple, but existing structure is designed with critical defect:
(1) for regulating the trapezoidal screw axially locating of collision block inaccurate, and assembling cannot regulate after dispatching from the factory again; (2) trapezoidal screw play back and forth all when the every task of oil hydraulic cylinder, is unfavorable for the maintenance of positioning precision and repetitive positioning accuracy, affects working life; (3) trapezoidal screw one end is speed reducer output shaft, its back and forth play have a strong impact on transmission accuracy and the life-span of speed reducer; (4) when two or more oil hydraulic cylinders are worked together, adopt the input of axle, when machine, locate when overproof, adjust difficulty; (5) this trip location adjusting device transmission chain length, precision is low.
As mentioned above, maintenance and the working life of the 2nd kind of positioning precision and repetitive positioning accuracy, precision all cannot reach accurate positioning requirements; Equally, the 3rd kind has certain potential safety hazard, and precision maintenance difficulty, and on every mold, design, mounting and positioning device (generally with damping device) had both increased design, the manufacture difficulty of mould, had increased again cost.
In sum, hydraulic pressure is located ubiquitous problem, and to be that turbidity test to hydraulic medium, temperature etc. require high, and control section precision is high, price is high, and maintenance difficulty is large.
Summary of the invention
1. the technical problem that will solve
Inaccurate for the trapezoidal screw axially locating existing in prior art, driving error is large, positioning precision is low, sealing effect is undesirable, the problem such as adjust, difficult in maintenance, the invention provides a kind of actuating motor and directly drive the accurate positioning hydraulic cylinders of data stroke, adopt the built-in collision block of oil hydraulic cylinder, trapezoidal screw and input shaft split and by two anti-absorption thrust washer axially locating and distinctive seal arrangement, realize high position precision and repetitive positioning accuracy, oil hydraulic cylinder has been carried out effectively, sealed reliably, and adjustment, maintenance difficulties and cost are low.
2. technological scheme
The purpose of this utility model is achieved through the following technical solutions:
The utility model actuating motor directly drives the accurate positioning hydraulic cylinders of data stroke, comprises cylinder body, actuating motor, speed reducer, input shaft, speed reducer mounting flange, speed reducer installation gland, cylinder end caps, adjusting sleeve, axle sleeve, piston end cap, trapezoidal screw, collision block, piston rod.
Wherein: actuating motor output shaft directly inserts speed reducer input end fastening by screw I and spring washer I, speed reducer output terminal and speed reducer mounting flange are fastening by screw II and spring washer II, speed reducer is installed gland and is installed on outside speed reducer mounting flange, speed reducer mounting flange lower end step cylindrical coordinates insertion with cylinder end caps upper-end surface seam, and speed reducer is installed by gland and cylinder end caps is fastening by screw III and spring washer III.
Input shaft is through cylinder end caps, input shaft upper shaft is connected with speed reducer output terminal, lower end axle is connected with trapezoidal screw upper end hole, input shaft step upper-end surface and anti-absorption thrust washer II lower end abutment, anti-absorption thrust washer II is anchored in cylinder end caps on hole end surface by screw VI, input shaft step lower end surface and trapezoidal screw step upper-end surface against, trapezoidal screw epimere axle is through axle sleeve hole, trapezoidal screw shoulder lower end surface and anti-absorption thrust washer I are fastening by transformation of the way screw and adjusting sleeve against, anti-absorption thrust washer I; Axle sleeve is installed on adjusting sleeve endoporus, and adjusting sleeve is threaded with cylinder end caps and by Cock screw tightening.
Trapezoidal screw is threaded with collision block through piston end cap endoporus, piston rod is threaded with piston end cap and by the tightening of screw V, collision block is installed on piston rod endoporus and is directed to flat key guiding, dive key by screw fastening on piston rod, piston and piston rod are structure as a whole, and cylinder body is installed on piston outside, between cylinder body and piston, by seal arrangement, are sealed, mounting O-shaped rings and back-up ring II between cylinder end caps and cylinder body, and by the tightening of screw IV.
Further, described speed reducer adopts hollow hole input, the accurate planetary speed reducer of hollow hole output low backlash, adopts collet-type locking mechanism, and actuating motor adopts band incremental encoder and break actuating motor.
Further, in the middle of described cylinder end caps, have center hole, input shaft is connected with lower end by cylinder end caps center hole, and by rotating, lattice enclose input shaft, star-like circle, back-up ring III seal.
Further, described input shaft upper shaft and lower end axle have keyway, flat key I is installed in upper shaft keyway and connects speed reducer output terminal hollow hole and input shaft upper shaft, flat key II is installed in the shaft spline of lower end and connects trapezoidal screw upper shaft and input shaft lower end axle, adjusting sleeve has outside thread, outside thread is connected with cylinder end caps screw-internal thread fit, has three groups of 6 relative set screw hole in cylinder end caps, and adjusting sleeve is by any one group two relative Cock screw tightenings.
Further, described piston rod bore design has guide key groove, and dive key is installed on collision block, and collision block and dive key pass through screw fastening.
Further, have turnover oily hydraulic fluid port A, hydraulic fluid port B on described cylinder body, inferior part of the cylinder block endoporus has sealed groove, and back-up ring I, piston rod seal component, support ring I, support ring II, dust seal are installed in groove.
When numerical control system, send an instruction to servo driver, servo driver drives actuating motor output angle is also detected by encoder, through speed reducer, slows down, and the transmission of speed reducer hollow hole output angle is to input shaft upper shaft; The a certain specific instruction of sending for numerical control system, numerical control system memory also can presetly compensate; Actuating motor can forward and backward; While stopping, being braked device braking.
The shaft drive of input shaft lower end is to trapezoidal screw, and an instruction of the corresponding numerical control system of collision block just has the fixed position of a relative cylinder body and can repeat this position, that is numerical control system target setting position and repeatedly setting target location.
When fluid is inputted by hydraulic fluid port B, that is oil hydraulic cylinder rear end topping up, piston rod stretches out, and oil hydraulic cylinder rod end fluid is discharged by hydraulic fluid port A.When hydraulic cylinder process arrives contact collision block upper-end surface, piston end cap lower end surface, hydraulic cylinder process stops, that is cylinder process allocation.
When fluid is inputted by hydraulic fluid port A, that is oil hydraulic cylinder rod end topping up, piston rod is retracted, and oil hydraulic cylinder rear end fluid is discharged by hydraulic fluid port B.When hydraulic cylinder backhaul arrives piston end and covers end face and hit adjusting sleeve lower end surface, hydraulic cylinder backhaul stops.During hydraulic cylinder works, when not arriving piston end and cover end face and hit adjusting sleeve lower end surface, just by the soft spacing control of numerical control system, stopped or having been posted a letter to control by position limit switch stopping the soft spacing limit position of going back control cylinder process of numerical control system.
3. beneficial effect
Than prior art, the utility model has the advantage of:
(1) anti-absorption thrust washer is to trapezoidal screw axially locating, and design, adopted adjusting sleeve to adjust axial location, conformity and the working life of the axial location of each oil hydraulic cylinder when dispatching from the factory have been guaranteed, guaranteed axially locating precision and can after precision is lost, again adjust, recover precision, design, the anti-absorption thrust washer adopting are inventor's patent, the patent No.: 201420038107.0;
(2) the input end axle of trapezoidal screw and its one end disconnects, trapezoidal screw and input shaft are split type, trapezoidal screw is all placed in oil hydraulic cylinder rear end, eliminated the suffered fluid end thrust of trapezoidal screw, trapezoidal screw can not be again play back and forth, improve working life, improved positioning precision;
(3) speed reducer output shaft (hole) is connected with input shaft and is designed to key and connects, and for being slidably matched, speed reducer output terminal axle (hole), without responsive to axial force, has improved transmission accuracy and the working life of speed reducer;
(4) independent design on every oil hydraulic cylinder, a set of stroke location adjusting device has been installed, every oil hydraulic cylinder separately adjustment aim position, and can remember and carry out specific compensation the error of a certain target location of convergence, adopt actuating motor (containing encoder, break) directly to drive planetary speed reducer, make the trip location adjusting device Transmitted chains the shortest, precision is the highest;
(5) piston cylinder adopts exclusive seal arrangement, makes oil hydraulic cylinder size compacter, and sealing system is more reasonable, and sealing effect is better, and the seal arrangement of employing is inventor's patent, the patent No.: 201420029683.9.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram that the utility model actuating motor directly drives the accurate positioning hydraulic cylinders of data stroke.
In figure: 1, dust seal; 2, support ring I; 3, back-up ring I; 4, piston rod seal component; 5, support ring II; 6, hydraulic fluid port A; 7, screw; 8, dive key; 9, collision block; 10, trapezoidal screw; 11, seal arrangement; 12, hydraulic fluid port B; 13, O type circle; 14, back-up ring II; 15, adjusting sleeve; 16, anti-absorption thrust washer I; 17, transformation of the way screw; 18, anti-absorption thrust washer II; 19, screw VI; 20, rotation lattice enclose; 21, star-like circle; 22, back-up ring III; 23, input shaft; 24, speed reducer; 25, screw I; 26, spring washer I; 27, actuating motor; 28, flat key I; 29, speed reducer mounting flange; 30, screw II; 31, spring washer II; 32, screw III; 33, spring washer III; 34, speed reducer is installed gland; 35, flat key II; 36, screw IV; 37, cylinder end caps; 38, axle sleeve; 39, Cock screw; 40, screw V; 41, piston; 42, piston end cap; 43, piston rod; 44, cylinder body.
Embodiment
Below in conjunction with Figure of description and specific embodiment, the utility model is described in detail.
Embodiment 1
By reference to the accompanying drawings 1, the actuating motor of the present embodiment directly drives the accurate positioning hydraulic cylinders of data stroke, comprise cylinder body 44, actuating motor 27, speed reducer 24, input shaft 23, speed reducer mounting flange 29, speed reducer are installed gland 34, cylinder end caps 37, anti-absorption thrust washer II 18, anti-absorption thrust washer I 16, adjusting sleeve 15, axle sleeve 38, piston end cap 42, trapezoidal screw 10, collision block 9, piston rod 43; Standard piece: flat key I 28, flat key II 35, dive key 8, screw 7, transformation of the way screw 17, screw VI19, screw I 25, spring washer I 26, screw II 30, spring washer II 31, screw III 32, spring washer III 33, screw IV 36, Cock screw 39, screw V 40; Sealing: rotation lattice enclose 20, the seal arrangement 11 of star-like circle 21, back-up ring III 22, O shape circle 13, back-up ring II 14, piston cylinder.
Actuating motor 27 output shafts with incremental encoder and break directly insert speed reducer 24 input ends, speed reducer 24 adopts hollow hole input, the accurate planetary speed reducer of hollow hole output low backlash, adopt collet-type locking mechanism, screw I 25 and spring washer I 26 are fastening, speed reducer 24 output terminals and speed reducer mounting flange 29 are fastening by screw II 30 and spring washer II 31, speed reducer is installed gland 34 and is installed on outside speed reducer mounting flange 29, speed reducer mounting flange 29 lower end step cylindricals coordinate insertion with cylinder end caps 37 upper-end surface seams, it is fastening by screw III 32 and spring washer III 33 with cylinder end caps 37 that speed reducer is installed gland 34.
Input shaft 23 is through cylinder end caps 37, its upper shaft is connected with speed reducer 24 output terminals, lower end axle is connected with trapezoidal screw 10 upper end holes, input shaft 23 step upper-end surfaces and anti-absorption thrust washer II 18 lower end surfaces against, anti-absorption thrust washer II 18 is anchored on the interior hole end surface of cylinder end caps 37 by screw VI19, input shaft 23 step lower end surfaces and trapezoidal screw 10 step upper-end surfaces against, trapezoidal screw 10 epimeres are through axle sleeve 38 holes, its shoulder lower end surface and anti-absorption thrust washer I 16 against, anti-absorption thrust washer I 16 is fastening with adjusting sleeve 15 by transformation of the way screw 17, axle sleeve 38 is installed on adjusting sleeve 15 endoporus, and adjusting sleeve 15 is threaded with cylinder end caps 37 and by Cock screw 39 tightenings, anti-absorption thrust washer I, II are to trapezoidal screw 10 axially locating, adjusting sleeve 15 is adjusted axial location, conformity and the working life of the axial location of each oil hydraulic cylinder when dispatching from the factory have been guaranteed, guaranteed axially locating precision and can after precision is lost, again adjust, the anti-absorption thrust washer adopting is formerly patent of inventor's portion, the patent No.: 201420038107.0.
Trapezoidal screw 10 is connected through piston end cap 42 endoporus and collision block 9 tapped holes, piston rod 1 is threaded with piston end cap 22 and by the tightening of screw V, collision block 9 is installed on piston rod 43 endoporus, piston rod 43 bore design have guide key groove, dive key 8 is installed on collision block 9, collision block 9 and dive key 8 are fastening by screw 7, piston 41 is structure as a whole with piston rod 43, on cylinder body 44, there is the oily hydraulic fluid port A6 of turnover, hydraulic fluid port B12, cylinder body 44 bottom endoporus have sealed groove, back-up ring I 3 is installed in groove, piston rod seal component 4, support ring I2, support ring II 5, dust seal 1, cylinder body 44 is installed on piston 41 outsides, between cylinder body 44 and piston 41, by seal arrangement 11, (portion that seal arrangement is present inventor is patent formerly, the patent No.: 201420029683.9) sealing, mounting O-shaped rings 13 and back-up ring II 14 between cylinder end caps 37 and cylinder body 44, and by 36 tightenings of screw IV.
In the middle of cylinder end caps 37, have center hole, input shaft 23 is connected with lower end-piece by cylinder end caps 37 center holes.Input shaft 23 by rotation lattice enclose 20, star-like circle 21,22 sealings of back-up ring III.Input shaft 23 upper shafts and lower end axle have keyway, flat key I 28 is installed in upper shaft keyway and connects speed reducer 24 output terminal hollow holes and input shaft 23 upper shafts, flat key II 35 is installed in the shaft spline of lower end and connects trapezoidal screw 10 upper shafts and input shaft 23 lower end axles, adjusting sleeve 15 has outside thread, outside thread is connected with cylinder end caps 37 screw-internal thread fit, in cylinder end caps 37, have three groups of 6 relative set screw hole, adjusting sleeve 15 is by any one group two relative Cock screw 39 tightenings while adjusting (all the other two groups for use) again.
When numerical control system is sent an instruction to servo driver, servo driver drives actuating motor 27 corresponding angle n π of output are also detected by the encoder of actuating motor, through speed reducer 24, slow down, the transmission of speed reducer hollow hole output n π/i angle is to input shaft 23 upper shafts; Input shaft 23 lower end shaft drive are to trapezoidal screw 10, trapezoidal screw 10 rotates transmission and produces axial displacement to collision block 9, collision block 9 just has the displacement of the relative cylinder body 44 of corresponding numerical control system instruction, when break braking, collision block 9 just has the fixed position of the relative cylinder body 44 of corresponding numerical control system instruction, that is numerical control system target setting position.The soft spacing control cylinder backhaul limit position of numerical control system, the soft spacing limit position of going back control cylinder process of numerical control system, numerical control system also can presetly compensate the target location deviation memory of setting.
When fluid is inputted by hydraulic fluid port B12, oil hydraulic cylinder rear end topping up, piston 41 is descending, and piston rod 43 stretches out, and oil hydraulic cylinder rod end fluid is discharged by hydraulic fluid port A6.When hydraulic cylinder process arrives piston end cap 42 contact collision block 9 upper-end surface, lower end surface, hydraulic cylinder process stops, cylinder process allocation.
When fluid is inputted by hydraulic fluid port A6, oil hydraulic cylinder rod end topping up, piston 41 is up, and piston rod 43 is retracted, and oil hydraulic cylinder rear end fluid is discharged by hydraulic fluid port B12.When hydraulic cylinder backhaul arrival piston end cap 42 upper-end surface contact adjustings overlap 15 position, lower end surface, hydraulic cylinder backhaul stops.
Below schematically the invention and mode of execution thereof are described, this description does not have restricted, and shown in accompanying drawing is also one of mode of execution of the invention, and actual structure is not limited to this.So, if those of ordinary skill in the art is enlightened by it, in the situation that not departing from this creation aim, without the creationary mode of structure similar to this technological scheme and the embodiment of designing, all should belong to the protection domain of this patent.
Claims (6)
1. actuating motor directly drives the accurate positioning hydraulic cylinders of data stroke, comprise cylinder body (44), it is characterized in that: also comprise actuating motor (27), speed reducer (24), input shaft (23), speed reducer mounting flange (29), speed reducer installation gland (34), cylinder end caps (37), adjusting sleeve (15), axle sleeve (38), piston end cap (42), trapezoidal screw (10), collision block (9), piston rod (43); wherein: actuating motor (27) output shaft directly inserts speed reducer (24) input end fastening by screw I (25) and spring washer I (26), speed reducer (24) output terminal and speed reducer mounting flange (29) are fastening by screw II (30) and spring washer II (31), speed reducer is installed gland (34) and is installed on outside speed reducer mounting flange (29), speed reducer mounting flange (29) lower end step cylindrical coordinates insertion with cylinder end caps (37) upper-end surface seam, it is fastening by screw III (32) and spring washer III (33) with cylinder end caps (37) that speed reducer is installed gland (34),
Input shaft (23) is through cylinder end caps (37), input shaft (23) upper shaft is connected with speed reducer (24) output terminal, lower end axle is connected with trapezoidal screw (10) upper end hole, input shaft (23) step upper-end surface and anti-absorption thrust washer II (18) lower end abutment, anti-absorption thrust washer II (18) is anchored on the interior hole end surface of cylinder end caps (37) by screw VI (19), input shaft (23) step lower end surface and trapezoidal screw (10) step upper-end surface against, trapezoidal screw (10) epimere axle is through axle sleeve (38) hole, trapezoidal screw (10) shoulder lower end surface and anti-absorption thrust washer I (16) against, anti-absorption thrust washer I (16) is fastening by transformation of the way screw (17) and adjusting sleeve (15), axle sleeve (38) is installed on adjusting sleeve (15) endoporus, adjusting sleeve (15) is threaded with cylinder end caps (37) and by Cock screw (39) tightening,
Trapezoidal screw (10) is threaded with collision block (9) through piston end cap (42) endoporus, piston rod (43) is threaded with piston end cap (42) and by screw V (40) tightening, collision block (9) is installed on piston rod (43) endoporus and is directed to flat key (8) guiding, dive key (8) is fastened on piston rod (43) by screw (7), piston (41) is structure as a whole with piston rod (43), cylinder body (44) is installed on piston (41) outside, between cylinder body (44) and piston (41), by seal arrangement (11), sealed, mounting O-shaped rings (13) and back-up ring II (14) between cylinder end caps (37) and cylinder body (44), and by screw IV (36) tightening.
2. actuating motor according to claim 1 directly drives the accurate positioning hydraulic cylinders of data stroke, it is characterized in that: described speed reducer (24) adopts hollow hole input, the accurate planetary speed reducer of hollow hole output low backlash, adopt collet-type locking mechanism, actuating motor (27) adopts band incremental encoder and break actuating motor.
3. actuating motor according to claim 1 directly drives the accurate positioning hydraulic cylinders of data stroke, it is characterized in that: in the middle of described cylinder end caps (37), have center hole, input shaft (23) is connected with lower end by cylinder end caps (37) center hole, and input shaft (23) encloses (20), star-like circle (21), back-up ring III (22) sealing by rotation lattice.
4. according to the actuating motor described in claim 1 or 3, directly drive the accurate positioning hydraulic cylinders of data stroke, it is characterized in that: described input shaft (23) upper shaft and lower end axle have keyway, flat key I (28) is installed in upper shaft keyway and connects speed reducer (24) output terminal hollow hole and input shaft (23) upper shaft, flat key II (35) is installed in the shaft spline of lower end and connects trapezoidal screw (10) upper shaft and input shaft (23) lower end axle, adjusting sleeve (15) has outside thread, outside thread is connected with cylinder end caps (37) screw-internal thread fit, in cylinder end caps (37), there are three groups of 6 relative set screw hole, adjusting sleeve (15) is by any one group two relative Cock screws (39) tightening.
5. actuating motor according to claim 4 directly drives the accurate positioning hydraulic cylinders of data stroke, it is characterized in that: described piston rod (43) bore design has guide key groove, dive key (8) is installed on collision block (9), and collision block (9) and dive key (8) are fastening by screw (7).
6. actuating motor according to claim 2 directly drives the accurate positioning hydraulic cylinders of data stroke, it is characterized in that: on described cylinder body (44), have turnover oily hydraulic fluid port A (6), hydraulic fluid port B (12), cylinder body (44) bottom endoporus has sealed groove, and back-up ring I (3), piston rod seal component (4), support ring I (2), support ring II (5), dust seal (1) are installed in groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420336713.0U CN203892308U (en) | 2014-06-23 | 2014-06-23 | Servo-motor-direct-driving numerical-control stroke accurately-positioning hydraulic cylinder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420336713.0U CN203892308U (en) | 2014-06-23 | 2014-06-23 | Servo-motor-direct-driving numerical-control stroke accurately-positioning hydraulic cylinder |
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| CN203892308U true CN203892308U (en) | 2014-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420336713.0U Expired - Fee Related CN203892308U (en) | 2014-06-23 | 2014-06-23 | Servo-motor-direct-driving numerical-control stroke accurately-positioning hydraulic cylinder |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847750A (en) * | 2015-03-17 | 2015-08-19 | 北京理工大学 | Electro-hydraulic combined type linear actuator |
| CN106678126A (en) * | 2015-11-05 | 2017-05-17 | 常州工学院 | Precisely-located numerical control cylinder and control method thereof |
| CN108953276A (en) * | 2018-09-18 | 2018-12-07 | 江苏钧微动力科技有限公司 | Screw thread inserting type rotation with harmonic wave speed reducing machine is straight to drive electrohydraulic servo valve |
-
2014
- 2014-06-23 CN CN201420336713.0U patent/CN203892308U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847750A (en) * | 2015-03-17 | 2015-08-19 | 北京理工大学 | Electro-hydraulic combined type linear actuator |
| CN104847750B (en) * | 2015-03-17 | 2017-01-18 | 北京理工大学 | Electro-hydraulic combined type linear actuator |
| CN106678126A (en) * | 2015-11-05 | 2017-05-17 | 常州工学院 | Precisely-located numerical control cylinder and control method thereof |
| CN106678126B (en) * | 2015-11-05 | 2018-05-18 | 常州工学院 | One kind can pinpoint numerical control oil cylinder and its control method |
| CN108953276A (en) * | 2018-09-18 | 2018-12-07 | 江苏钧微动力科技有限公司 | Screw thread inserting type rotation with harmonic wave speed reducing machine is straight to drive electrohydraulic servo valve |
| CN108953276B (en) * | 2018-09-18 | 2024-05-10 | 江苏钧微动力科技有限公司 | Screw thread cartridge type rotary direct-drive electrohydraulic servo valve with harmonic speed reducer |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141022 Termination date: 20150623 |
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| EXPY | Termination of patent right or utility model |