CN101550955B - Rotary cylinder using planar end oil film for sealing hydraulic slipring - Google Patents
Rotary cylinder using planar end oil film for sealing hydraulic slipring Download PDFInfo
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- CN101550955B CN101550955B CN2009100719822A CN200910071982A CN101550955B CN 101550955 B CN101550955 B CN 101550955B CN 2009100719822 A CN2009100719822 A CN 2009100719822A CN 200910071982 A CN200910071982 A CN 200910071982A CN 101550955 B CN101550955 B CN 101550955B
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- 238000007789 sealing Methods 0.000 title claims abstract description 20
- 230000008878 coupling Effects 0.000 claims abstract description 4
- 238000010168 coupling process Methods 0.000 claims abstract description 4
- 238000005859 coupling reaction Methods 0.000 claims abstract description 4
- 239000000945 filler Substances 0.000 claims description 15
- 210000004907 gland Anatomy 0.000 claims description 6
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 28
- 210000000078 claw Anatomy 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
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Abstract
A rotary cylinder using a planar end oil film for sealing hydraulic slipring relates to the field of computer numerical control, and aims at the defect of low rotary speed of prior rotary cylinder. One end of shaft according to the invention is connected with a motor through a coupling. The end at the other end of shaft is provided with a cylinder. An opening is provided on the inner end plane of cylinder of shaft. One end of driving pin is matched with the opening on the inner end plane of cylinder of shaft through screw thread fit. The other end of driving pin is matched with an opening on the head end plane of piston through clearance fit. A cylinder cover is sleeved on the piston rod of piston and seals the cylinder of shaft. A spring is sleeved on the piston rod of piston and is supported between the cylinder cover and the end plane connected between the piston rod of piston and the head of piston. The shaft is fixedly connected with the casing through a bearing and a hydraulic slipring. The oil inlet opening of casing is communicated with the oil inlet opening of hydraulic slipspring. The oil outlet opening of hydraulic slipspring is communicated with the oil inlet opening ofcylinder of shaft. The oil outlet opening of cylinder of shaft is communicated with the oil outlet opening of casing. The rotary cylinder according to the invention provides power for a power chuck a nd has the advantages of excellent reliability, simple structure and high rotary speed.
Description
Technical field
The present invention relates to the numerical control machine tool technique field, be specifically related to a kind of angling cylinder of using planar end oil film seal technology, for power chuck provides power.
Background technique
End face seal is a kind of axial seal, claim mechanical end face seal again, be called for short mechanical seal, being the main type of fluid machinery rotation axis seal, is the rotation axis seal of using always, compares with the gland soft packing seal, it is low to have leakage rate, fretting wear is little, long service life, reliable operation, does not need series of advantages such as regular maintenance, has therefore obtained using widely in modern industry generates.
Along with the development of progress of science and technology and production, national economy all departments require mechanical industry that advanced technical equipment constantly is provided, and develop new product variety, to satisfy the needs that national sustained economic development and people's lives improve constantly.Simultaneously, along with the development of tool material and improving constantly of lathe rotating speed, more and more higher requirement has been proposed also chuck.In order to adapt to these demands, domestic urgent need is developed the New Power Chuck of high level, high technology content.
Fig. 4 is a power chuck effect sketch.The clamping action of chuck mainly is made up of gas (liquid) device 30, slide-bar 32, slide block 33 and claw 34 etc.Working principle is for to convert moving axially of chuck piston to three rotations of slide block in its chute by the slide-bar screw mechanism, the tooth that the top of these three slide blocks has local helical tooth and card slide bottom constitutes meshing relation, thereby moves radially clamping work pieces by the rotation drive claw of slide block.Power chuck belongs to universal chuck, is equipped with different power plant (cylinder, oil cylinder or motor), just can form pneumatic chuck, hydraulic chuck or electric chuck.Cylinder or oil cylinder are contained in the machine tool chief axis rear end, with the pull bar or the trombone slide that are through in the spindle hole, the wedge-shaped sleeve in the push-and-pull front-end of spindle chuck body, make three claws move radially cover of wedge formula power chuck simultaneously by the axial advance and retreat of wedge-shaped sleeve.This chuck is swift in motion, and the claw amount of movement is little, is suitable for using in production in enormous quantities.
From present domestic demand to hydraulic power chuck, the hydraulic power chuck that maximum speed surpasses 6000rpm all needs from external import.Main cause is domestic also there be not technology production and the supporting hollow rotating oil cylinder of hydraulic power chuck, also can't resolve the problem of losing of clamping force under the high rotating speed in addition.Sealing in the rotating hydraulic cylinder between fixed component and the rotary component is the bottleneck that limits this technical development, be in the operating mode of high interface slip velocity, high border pressure reduction and high ambient temperature in view of its sealing, common contact-type mechanical end face seal is difficult to be competent at because of high pV value, thereby the sealing at these positions, should adopt the motive sealing form of non-contact type.
Summary of the invention
The present invention is directed to the existing not high shortcoming of angling cylinder rotating speed, and propose a kind of angling cylinder of using planar end oil film for sealing hydraulic slipring.
The angling cylinder of using planar end oil film for sealing hydraulic slipring of the present invention comprises the hydraulic pressure slip ring, cylinder cap, piston, drive pin, axle, spring, bearing and shell, one end of axle is connected with motor by coupling, the end of the other end of axle has cylinder body, the cylinder body interior edge face of axle is provided with the hole, screw-thread fit is adopted in hole on the cylinder body interior edge face of one end of drive pin and axle, Spielpassung is adopted in hole on the other end of drive pin and the piston crown end face, cylinder cap is enclosed within on the piston rod of piston and the cylinder body of seal shaft, spring housing is on the piston rod of piston and be supported between cylinder cap and the piston crown, axle is fixedlyed connected with shell with the hydraulic pressure slip ring by bearing, the filler opening of shell is communicated with the filler opening of hydraulic pressure slip ring, the oil outlet of hydraulic pressure slip ring is communicated with the filler opening of the cylinder body of axle, and the oil outlet of the cylinder body of axle is communicated with the oil outlet of shell; The hydraulic pressure slip ring comprises first parts, second parts, the 3rd parts and the 4th parts; First parts and second parts are fixed together, the 3rd parts and the 4th parts are fixed together, second parts are embedded in the 4th parts, have L shaped through hole on first parts, have the oil-feed ring groove on described first parts and the surface that shell is connected, have the through hole of V-arrangement on second parts, have ring groove on the 3rd parts and the surface that second parts are connected, have the taper ring groove on the 3rd parts and the surface that is connected of axle, have through hole between ring groove and the taper ring groove, the filler opening of shell is communicated with an end of L shaped through hole by the oil-feed ring groove, through hole one end of the V-arrangement on the other end of L shaped through hole and second parts is communicated with, the other end of the through hole of V-arrangement is communicated with ring groove on the 3rd parts, and the taper ring groove on the 3rd parts is communicated with the filler opening of the cylinder body of axle; Slit between first parts and the 4th parts is first slit, and between second parts and the 3rd parts, and the slit that is positioned at the ring groove both sides on the 3rd parts is respectively second slit and the 3rd slit; First slit, second slit and the 3rd slit are in the same plane, and the slit value in described three slits is h.
It is that angling cylinder is joined oil that this device adopts the hydraulic pressure slip ring, adopt flat end face oil film seal technology at the seal face place of hydraulic pressure slip ring, therefore can realize non-contacting seal form, make the Telescopic that under very high rotating speed, to realize piston rod of angling cylinder, friction torque is very little, installation and maintenance is simple, has prolonged working life greatly.Hydraulic gyration cylinder apparatus based on the flat end face oil film seal changes scooter 10000rpm.
Concrete advantage of the present invention mainly shows the following aspects: the major function of hydraulic pressure slip ring is to go in pressure oil or other fluid transmission hydraulic gyration oil cylinder, make the piston rod move left and right, drive voussoir and drive claw, thereby realize radially unclamping and clamping of chuck.And guarantee that energy loss is as far as possible little in this transmittance process.Because the structural feature of itself, it also can carry certain axial force.While hydraulic pressure slip ring itself is a self balancing element still.The oil film face sealing at place, three slits of hydraulic pressure slip ring belongs to the non-contact sealing, compare with common contact-type mechanical seal, prolongation in working life, sealing reliability are improved and operation and maintenance cost decline because of end face has direct solid friction wearing and tearing, thereby economic benefit is obviously improved.The present invention has good reliability, simple in structure, rotating speed advantages of higher.
Description of drawings
Fig. 1 is a structural representation of the present invention; Fig. 2 is the A portion enlarged view of Fig. 1; Fig. 3 is the B portion enlarged view of Fig. 1; Fig. 4 is that power chuck connects and the action schematic representation.
Embodiment
Embodiment one: present embodiment is described in conjunction with Fig. 1, present embodiment is by hydraulic pressure slip ring 2, cylinder cap 6, piston 7, drive pin 11, axle 12, spring 13, bearing 14 and shell are formed, one end of axle 12 is connected with motor by coupling, the end of the other end of axle 12 has cylinder body, the cylinder body interior edge face of axle 12 is provided with the hole, screw-thread fit is adopted in hole on the cylinder body interior edge face of one end of drive pin 11 and axle 12, Spielpassung is adopted in hole on the other end of drive pin 11 and piston 7 head end, cylinder cap 6 is enclosed within on the piston rod of piston 7 and the cylinder body of seal shaft 12, spring 13 is enclosed within on the piston rod of piston 7 and is supported between cylinder cap 6 and piston 7 heads, axle 12 is fixedlyed connected with shell with hydraulic pressure slip ring 2 by bearing 14, the filler opening of shell is communicated with the filler opening of hydraulic pressure slip ring 2, the oil outlet of hydraulic pressure slip ring 2 is communicated with the filler opening a of the cylinder body of axle 12, and the oil outlet b of the cylinder body of axle 12 is communicated with the oil outlet of shell.
The major function of hydraulic pressure slip ring 2 is to go in the cylinder body with pressure oil or other fluid transmission shaft 12, and the cylinder body of axle 12 is the hydraulic gyration oil cylinder, makes the piston rod move left and right of piston 7, and drives piston 7 and axle 12 revolution synchronously.
Embodiment two: in conjunction with Fig. 2 and Fig. 3 present embodiment is described, present embodiment and embodiment one difference are that hydraulic pressure slip ring 2 is made up of first parts 20, second parts 21, the 3rd parts 22 and the 4th parts 23; First parts 20 and second parts 21 are fixed together, the 3rd parts 22 and the 4th parts 23 are fixed together, second parts 21 are embedded in the 4th parts 23, have L shaped through hole c on first parts 20, have oil-feed ring groove 29 on described first parts 20 and the surface that shell is connected, have the through hole d of V-arrangement on second parts 21, have ring groove 24 on the 3rd parts 22 and the surface that second parts 21 are connected, the 3rd parts 22 have taper ring groove 25 with axle on 12 surfaces that are connected, have through hole between ring groove 24 and the taper ring groove 25, the filler opening of shell is communicated with the end of L shaped through hole c by oil-feed ring groove 29, through hole d one end of the V-arrangement on the other end of L shaped through hole c and second parts 21 is communicated with, the other end of the through hole d of V-arrangement is communicated with ring groove 24 on the 3rd parts 22, and the taper ring groove 25 on the 3rd parts 22 is communicated with the filler opening a of the cylinder body of axle 12; The major function of hydraulic pressure slip ring 2 is to go in pressure oil or other fluid transmission hydraulic gyration oil cylinder, to make the piston rod move left and right.And guarantee that energy loss is as far as possible little in this transmittance process.Because the structural feature of itself, it also can carry certain axial force.While hydraulic pressure slip ring itself is a self balancing element still.Other composition is identical with embodiment one with Placement.
Embodiment three: present embodiment is described in conjunction with Fig. 2 and Fig. 3, present embodiment and embodiment one difference are that the slit between first parts 20 and the 4th parts 23 is that the slit of ring groove 24 both sides between first slit, 26, the second parts 21 and the 3rd parts 22 is respectively second slit 27 and the 3rd slit 28; First slit 26, second slit 27 and the 3rd slit 28 are in the same plane, and the slit value in described three slits is h; Pressure oil between first slit 26, second slit 27 and the 3rd slit 28, and the pressure oil in the ring groove 24 sets up pressure plane and pressure area respectively, thus constituted the static pressure controlling mechanism; Pressure oil is transferred to the cylinder body of axle 12 by through hole; First slit 26, second slit 27 and the 3rd slit 28 have constituted three variable restrictor devices, and the automatic adjusting of slit value is realized by the half-bridge loop that these three variable restrictor devices are formed.The sealing at three sealing off gap places of hydraulic pressure slip ring 2 belongs to the flat end face oil film seal, and promptly the rotating ring sealing surfaces of flat end face oil film seal is smooth.Other composition is identical with embodiment one with Placement.
Embodiment four: in conjunction with Fig. 2 and Fig. 3 present embodiment is described, present embodiment and embodiment one difference are that slit value h is 0.01-0.02mm.Other composition is identical with embodiment one with Placement.
Embodiment five: in conjunction with Fig. 1 present embodiment is described, the present embodiment shell is made up of housing 1, bearing support 19, gland 16 and cover plate 3; Gland 16 is installed on the small end face of bearing support 19, and the large end face of bearing support 19 links to each other with an end of housing 1, and the other end of housing 1 is equipped with sealed cover 3.The axially locating of axle 12 is to be finished by the end ring 15 of the housing in the shell 1, bearing support 19, gland 16, bearing 14 and bearing 14.Other composition is identical with embodiment one with Placement.
Embodiment six: in conjunction with Fig. 1 present embodiment is described, present embodiment and embodiment one difference are between cover plate 3 and the housing 1 rubber pad 17 to be installed, and prevent that the hydraulic oil that leaks from flowing out from the side.Other composition is identical with embodiment one with Placement.
Content of the present invention is not limited only to the content of the respective embodiments described above, and the combination of one of them or several embodiments equally also can realize the purpose of inventing.
Claims (4)
1. the angling cylinder of using planar end oil film for sealing hydraulic slipring, it is characterized in that it comprises hydraulic pressure slip ring (2), cylinder cap (6), piston (7), drive pin (11), axle (12), spring (13), bearing (14) and shell, one end of axle (12) is connected with motor by coupling, the end of the other end of axle (12) has cylinder body, the cylinder body interior edge face of axle (12) is provided with the hole, screw-thread fit is adopted in hole on the cylinder body interior edge face of one end of drive pin (11) and axle (12), Spielpassung is adopted in hole on the other end of drive pin (11) and piston (7) head end, cylinder cap (6) is enclosed within on the piston rod of piston (7) and the cylinder body of seal shaft (12), spring (13) is enclosed within on the piston rod of piston (7) and is supported between cylinder cap (6) and piston (7) head, axle (12) is fixedlyed connected with shell with hydraulic pressure slip ring (2) by bearing (14), the filler opening of shell is communicated with the filler opening of hydraulic pressure slip ring (2), the oil outlet of hydraulic pressure slip ring (2) is communicated with the filler opening (a) of the cylinder body of axle (12), and the oil outlet (b) of the cylinder body of axle (12) is communicated with the oil outlet of shell; Hydraulic pressure slip ring (2) comprises first parts (20), second parts (21), the 3rd parts (22) and the 4th parts (23); First parts (20) and second parts (21) are fixed together, the 3rd parts (22) and the 4th parts (23) are fixed together, second parts (21) are embedded in the 4th parts (23), have L shaped through hole (c) on first parts (20), have oil-feed ring groove (29) on described first parts (20) and the surface that shell is connected, have the through hole (d) of V-arrangement on second parts (21), have ring groove (24) on the 3rd parts (22) and the surface that second parts (21) are connected, have taper ring groove (25) on the 3rd parts (22) and the surface that is connected of axle (12), have through hole between ring groove (24) and the taper ring groove (25), the filler opening of shell is communicated with an end of L shaped through hole (c) by oil-feed ring groove (29), through hole (d) end of the V-arrangement on the other end of L shaped through hole (c) and second parts (21) is communicated with, the other end of the through hole of V-arrangement (d) is communicated with ring groove (24) on the 3rd parts (22), and the taper ring groove (25) on the 3rd parts (22) is communicated with the filler opening (a) of the cylinder body of axle (12); Slit between first parts (20) and the 4th parts (23) is first slit (26), between second parts (21) and the 3rd parts (22), and the slit that is positioned at ring groove (24) both sides on the 3rd parts (22) is respectively second slit (27) and the 3rd slit (28); First slit (26), second slit (27) and the 3rd slit (28) are in the same plane, and the slit value in described three slits is h.
2. the angling cylinder of using planar end oil film for sealing hydraulic slipring according to claim 1 is characterized in that slit value h is 0.01-0.02mm.
3. the angling cylinder of using planar end oil film for sealing hydraulic slipring according to claim 1 and 2 is characterized in that shell comprises housing (1), bearing support (19), gland (16) and cover plate (3); Gland (16) is installed on the small end face of bearing support (19), and the large end face of bearing support (19) links to each other with an end of housing (1), and the other end of housing (1) is equipped with the described cover plate (3) of sealing usefulness.
4. the angling cylinder of using planar end oil film for sealing hydraulic slipring according to claim 3 is characterized in that between cover plate (3) and the housing (1) rubber pad (17) being installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100719822A CN101550955B (en) | 2009-05-08 | 2009-05-08 | Rotary cylinder using planar end oil film for sealing hydraulic slipring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100719822A CN101550955B (en) | 2009-05-08 | 2009-05-08 | Rotary cylinder using planar end oil film for sealing hydraulic slipring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101550955A CN101550955A (en) | 2009-10-07 |
| CN101550955B true CN101550955B (en) | 2011-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100719822A Active CN101550955B (en) | 2009-05-08 | 2009-05-08 | Rotary cylinder using planar end oil film for sealing hydraulic slipring |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775281B (en) * | 2013-12-30 | 2016-03-30 | 北京航空航天大学 | Pressure film sealing pendulum leaf motor system |
| CN116352250B (en) * | 2023-05-31 | 2023-08-18 | 苏州西岩机械技术有限公司 | Numerical control friction welding machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1103044A (en) * | 1913-03-08 | 1914-07-14 | William S Harley | Bearing. |
| EP0525371A2 (en) * | 1991-07-20 | 1993-02-03 | SMW-Autoblok Spannsysteme GmbH | Transfer arrangement for a medium |
| CN2169723Y (en) * | 1992-09-28 | 1994-06-22 | 王万孝 | Non rotary high speed through hole motive oil cylinder |
-
2009
- 2009-05-08 CN CN2009100719822A patent/CN101550955B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1103044A (en) * | 1913-03-08 | 1914-07-14 | William S Harley | Bearing. |
| EP0525371A2 (en) * | 1991-07-20 | 1993-02-03 | SMW-Autoblok Spannsysteme GmbH | Transfer arrangement for a medium |
| CN2169723Y (en) * | 1992-09-28 | 1994-06-22 | 王万孝 | Non rotary high speed through hole motive oil cylinder |
Non-Patent Citations (2)
| Title |
|---|
| JP特开平5-174305A 1993.07.13 |
| 姜继海等.基于液压滑环配油的动力卡盘.《机床与液压》.2007,第35卷(第8期),97-100. * |
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| CN101550955A (en) | 2009-10-07 |
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Effective date of registration: 20181227 Address after: 414002 Fourth Floor, Building 2, Xindeng Incubation Building, Yungang Road Military-Civil Integration Industrial Park, Chenglingji New Port District, Yueyang City, Hunan Province Patentee after: Harbin University of Technology Robot (Yueyang) Research Institute Co., Ltd. Address before: 414002 room 538, Yungang Road Customs Service building, Chenglingji new port, Yueyang, Hunan Patentee before: Hakda robotics group Yueyang Co., Ltd. |
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