CN104712626B - Accelerometer pendulum piece set bonding device of expandable mandrel structure - Google Patents
Accelerometer pendulum piece set bonding device of expandable mandrel structure Download PDFInfo
- Publication number
- CN104712626B CN104712626B CN201510092819.XA CN201510092819A CN104712626B CN 104712626 B CN104712626 B CN 104712626B CN 201510092819 A CN201510092819 A CN 201510092819A CN 104712626 B CN104712626 B CN 104712626B
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- seat
- cover
- pendulum
- rise
- screw rod
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- 238000003825 pressing Methods 0.000 claims description 12
- 238000003892 spreading Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 239000003292 glue Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B11/00—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding
Abstract
The invention discloses an accelerometer pendulum piece set bonding device of an expandable mandrel structure. The accelerometer pendulum piece set bonding device comprises a positioning block, two expandable socket sleeves and a screw rod. The positioning block is fixedly arranged on a base of the bonding device. The two socket sleeves are of a cylinder structure and coaxially arranged on a V-shaped groove of the positioning block at an interval. The cylinder walls of the ends close to each other are each provided with a plurality of axial gaps. Coil skeletons are arranged on the peripheries of the ends in a sleeving mode. The inner wall surfaces of the ends are inner conical surfaces, and the inner wall surfaces can be expanded after jacking rods with outer conical ends stretch into the inner wall surfaces through expanded cores. One end of the screw rod is connected with the other end of one of expandable seat sleeves in an abutted mode, and the other end of the screw rod is provided with a handle. The handle drives the screw rod to move. The two end surfaces of the two expandable seat sleeves abut against each other, so that the coil skeletons on the two end surfaces press a pendulum piece arranged on a positioning hole and located between the two end surfaces, and high-coaxiality bonding is achieved. The accelerometer pendulum piece set bonding device is high in bonding accuracy, the positions of the coil skeletons and the pendulum piece are controllable, the coaxiality error is small, the coil skeletons are mounted in the seat sleeves easily, and the pendulum piece set is easy to detach after being bonded.
Description
Technical field
The invention belongs to accelerometer technical field, be specifically related to the adhering device of a kind of accelerometer pendulum group.
Background technology
Accelerometer is a kind of high-precision sensor measuring small acceleration, is the vitals of inertia system, and pendulum group is the core component of accelerometer, and the manufacturing property of pendulum group has material impact to the use of inertia system.
Pendulum group is formed by the skeleton of two winding coils is bonding with being clipped in one of them pendulum, the bonding coil rack on rear both sides and the axiality of pendulum have very important impact to the precision of accelerometer, coaxial accuracy is the highest, then can badly influence the performance parameters such as the resolution after watch core assembles, thus reduce the service precision of product.
At present, two coil racks are respectively fitted in two cover for seat by bonding being usually of pendulum group, and pendulum is placed in the middle of two cover for seat, two, left and right cover for seat and middle pendulum are close together with push rod, thus the coil rack in cover for seat is bonded together with pendulum.But have during this and have influence on bonding rear coil rack and the axiality of pendulum following aspects:
(1) cover for seat can not control with the gap of coil rack, little time big during gap between the two so that the coaxiality error of bonding rear coil rack and pendulum is big, and may affect the dismounting of bonding rear product, improves percent defective.This is because, if gap between the two is big, two, left and right coil rack is the poorest with the axiality of cover for seat, bonding with pendulum after coaxiality error with regard to greatly；If gap is little, after coil rack is bonding, the dismounting from cover for seat is by highly difficult, because typically coil rack overall dimensions is the least (Left and right), material is aluminium alloy, and the wall thickness being wound around coil is the thinnest, and monolateral 0.1mm is yielding；Middle pendulum is quartz glass, thickness 0.8mm, thinnest part only 0.03mm, bonding after removal force can not be big, otherwise pendulum easily ruptures, and scraps.
(2) cover for seat can not accurately control with the coaxial accuracy of pendulum, it is impossible to guarantees pendulum center and cover for seat central coaxial so that the axiality of coil rack and pendulum cannot accurately control.Because coil rack is enclosed within cover for seat, if cover for seat center is big with the coaxiality error at pendulum center, the most bonding rear coil rack is the biggest with the coaxiality error of pendulum.
For these reasons, in the bonding process of pendulum group, it is necessary to control cover for seat reasonable with the gap uniformity of coil rack, and ensure the coaxial accuracy at cover for seat center and pendulum center simultaneously.
Summary of the invention
Disadvantages described above or Improvement requirement for prior art, the invention provides the accelerometer pendulum group adhering device of a kind of core shaft structure that rises, it is by being optimized improvement to the cover for seat structure for suit coil skeleton, so that cover for seat obtains optimal control with the gap of coil rack and the axiality at cover for seat center and pendulum center, improve the coaxial accuracy of pendulum group bonding back skeleton coil and pendulum.
For achieving the above object, the technical solution adopted in the present invention is as follows:
A kind of accelerometer pendulum group adhering device of the core shaft structure that rises, bonding with the high-axiality of pendulum for realizing shaped framework coil in accelerometer, it is characterised in that this adhering device includes:
Locating piece, it is fixedly installed on the base of adhering device, and this locating piece has the v-depression for location；
Risen cover for seat in tube structure, it is two, coaxial spaced is arranged on the v-depression of described locating piece, multiple axial slits is had on the respective barrel in end that this cover for seat that can rise is close to each other, described coil rack is enclosed within this end outer peripheral face, and this inner wall of end face is internal conical surface, it can stretch into spreading after wherein at the push rod with cylindrical tapered end, thus will be sleeved on the gap tensioners such as described coil rack thereon and fix and ensure central coaxial；And
Screw rod, it can be arranged on the base of adhering device with moving to axial, its one end and one of them cover for seat other end end abutment that can rise, the screw rod other end is provided with the handle for driving screw rod to move, it drives described screw rod to move, thus the relative both ends of the surface of the cover for seat that one of them cover for seat that can rise described can be risen with another mutually push against so that the coil rack in both ends of the surface compresses with being arranged on hole, location and being positioned at pendulum between the two, it is achieved high-axiality bonding.
Improving as the present invention, described push rod cylindrical tapered end is coaxially mated with the cover for seat internal conical surface that can rise.
As the improvement of the present invention, the described cover for seat that rises is pressed on the v-depression of described locating piece by pressing plate.
As the improvement of the present invention, also include assisting sleeve, its be arranged on described one of them can rise between cover for seat and screw rod end, when described screw rod moves by described auxiliary sleeve push against described in can ringfeder cylinder.
As the improvement of the present invention, described in be socketed with the cylindrical of cover for seat end of coil rack for consistent with pendulum excircle dimension so that pendulum and the excircle orientation of cover for seat end accurately and guarantee is coaxial, so that described coil rack and pendulum central coaxial.
As the improvement of the present invention, the axial slits on the respective barrel in end that the described cover for seat that rises is close to each other is circumferentially evenly arranged, and is 3-6 bar so that end circumference barrel is uniformly divided into polylith, preferably gap quantity.
As the improvement of the present invention, the other end relatively in the barrel inwall of the described cover for seat that rises with internal conical surface has screw thread, described push rod be threaded connection the cover for seat that can rise with this be connected and thus relative movement within it to realize tensioner or to unclamp.
As the improvement of the present invention, also include knockout pin, for after bonding completing, pendulum group is ejected from base.
The accelerometer pendulum group adhering device of the risen core shaft structure of the present invention, including base and location mounted thereto, clamping device, position portion is made up of 1 vee-block, 2 cover for seat that can rise, 2 push rods and 2 pressing plates: utilize the mandrel principle that can rise, the cover for seat that can rise left end is threaded hole and internal conical surface, and right-hand member is machined with groove vertically with the interior cylinder of coil rack Internal hole positioning.Push rod is moved in the cover for seat that can rise by helicitic texture, the interior cylinder of the cover for seat that can be risen by the cooperation spreading of taper seat.2 cover for seat that can rise are placed on vee-block, fix with 2 pressing plates respectively, and vee-block is screwed on base；Clamping part includes that (auxiliary sleeve can be cancelled according to the shape of screw rod end face tightening for handle, screw rod and auxiliary sleeve, the cover for seat that can rise can be reliably held out against for cancelling foundation with screw rod end face): screw rod rotates the movement realized in the base by helicitic texture handle, auxiliary sleeve is placed on screw rod end face, promote by screw rod and hold out against the cover for seat that can rise, it is achieved coil rack and pendulum bonding.
The bonded structure of the risen cover for seat of the present invention, its can reduce coil rack and pendulum bonding after coaxiality error, improve pendulum group bonding after coaxial accuracy.
In general, by the contemplated above technical scheme of the present invention compared with prior art, have the advantages that
(1) by arranging two cover for seat that can rise, making coil rack be socketed respectively thereon, utilization can be risen, and by coil rack, coaxially and gap uniformity ground tensioning is fixed in cover for seat mandrel principle, can coaxial coil skeleton and the axiality of cover for seat.
(2) by cover for seat barrel excircle dimension is sized in the same size with pendulum so that pendulum can ensure and being accurately positioned of cover for seat barrel before bonding, thus can ensure the axiality of pendulum and barrel, so realize with coil rack coaxial.
(3) by the coil rack being fixed on all right one way or the other cover for seat end of rising is utilized screw-pressing with the pendulum being positioned between the two, owing to the cover for seat that can rise is arranged at positioning in fast installation groove so that axiality can be ensured with another cover for seat that can rise all the time when one of them cover for seat that can rise moves.
(4) the accelerometer pendulum group adhering device adhesive reinforcement of the risen core shaft structure of the present invention is high, and the position of bonding process coil skeleton and pendulum is controlled, and bonding rear coil rack is little with the coaxiality error of pendulum.Coil rack installation in cover for seat is easy, and the dismounting after pendulum group is bonding is easy, will not scrap because rupturing when the localized reason of coil rack with cover for seat causes pendulum to be dismantled.
Accompanying drawing explanation
Fig. 1 is the structural representation of the accelerometer pendulum group adhering device according to the risen core shaft structure constructed by the embodiment of the present invention；
Fig. 2 is the sectional view of Fig. 1；
Fig. 3 is the structural representation of the risen cover for seat of the accelerometer according to the risen core shaft structure constructed by the embodiment of the present invention；
Fig. 4 is the sectional view of the risen cover for seat in Fig. 3.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.As long as just can be mutually combined additionally, technical characteristic involved in each embodiment of invention described below does not constitutes conflict each other.
Constructed by the embodiment of the present invention the accelerometer pendulum group adhering device of risen core shaft structure, including base and location mounted thereto, clamping device, position portion by 1 vee-block 2 (as locating piece), 2 can rise by 5,2 push rods 3 of cover for seat and 2 pressing plates 6 form.Push rod 3 is moved in the cover for seat 5 that can rise by helicitic texture.2 cover for seat that can rise are put 5 on vee-block, fix with 2 pressing plates 6 respectively, and vee-block 2 is screwed on base.
Clamping part includes handle 11, screw rod 10 and auxiliary sleeve 8, and screw rod 10 rotates, by helicitic texture handle 11, the movement realized in base 1, and auxiliary sleeve 8 is placed on screw rod 10 end face, promotes holding out against the cover for seat 5 that can rise by screw rod 10, it is achieved pendulum group bonding.
As shown in Figure 1 and Figure 2, the cover for seat that can rise 5 and push rod 3 are respectively arranged with 2, and vee-block 2 screw 7 is fixed on base 1, and the cover for seat that can rise 5 is placed on vee-block 2, compresses with pressing plate 6 and screw 7.The cover for seat that can rise is the tube structure of hollow, and wherein for suit coil skeleton on the barrel cylindrical of one end, these two ends of all right one way or the other ringfeder cylinder are oppositely arranged.Can this end internal face of ringfeder cylinder be internal conical surface, wherein towards outer end for taper small end.Circumferentially have multiple axial slits being evenly arranged on the barrel of this end, this end barrel is divided into polylith.
Push rod 3 is threaded connection with the cover for seat 5 that can rise, and the outer conical surface of push rod 3 is mated with the internal conical surface of the cover for seat 5 that can rise.By the cooperation of two conical surfaces by the barrel tensioner of this end, thus can will fix tensioner with being sleeved on the coil rack gap uniformity of this end when push rod 3 is tightened, and ensure the axiality of coil rack and cylinder.
Screw rod 10 and handle 11 are left hand thread engagement, and screw rod 10 for being slidably matched, limits it with pressing plate 9 and screw 7 and rotates, it is achieved screw rod 10 moving in parallel in base 1 in base 1.
Before using, first vee-block 2 screw 7 is fixed on base 1, screw rod 10 is loaded base 1 and is connected with handle 11, with pressing plate 9 and screw 7 by spacing for screw rod 10.Then 2 coil racks are respectively fitted on the interior cylinder of the cover for seat 5 that can rise, by 2 push rods 3 respectively at the left end screwed hole of the cover for seat 5 that can rise, screw in inner hexagon spanner, and by the outer conical surface of push rod 3 and mating of cover for seat 5 internal conical surface that can rise, spreading can rise the interior cylinder of cover for seat 5 right-hand member, it is achieved the cover for seat that can rise 5 is to the reliable tensioner of coil rack and being accurately positioned of center.
Then the risen cover for seat 5 that will be equipped with coil rack is placed on vee-block 2, and wherein 1 cover for seat 5 locating surface with base 1 left side that can rise is by putting down, and is placed on by pendulum in the middle of two coil racks, is pressed on base 1 by 2 pressing plates 6 and screw 7 cover for seat 5 that can rise respectively；
Then rotary handle 11, drive screw rod 10 to move to the left side, 1 cover for seat 5 that can rise withstanding on vee-block 2 with the auxiliary sleeve 8 being enclosed within screw rod 10, thus 2 coil racks and pendulum are clamped, and complete the bonding of pendulum group.
Bonding complete after, the dismounting of pendulum group is the most extremely important, now first rotary handle 11 exits screw rod 10 and auxiliary sleeve 8, with the push rod 3 on the right of spanner back-out, the inner cylinder face elastic reset of the cover for seat 5 that can rise on the right of making, thus unclamp the tensioner to right-hand line ring framework, then dismantle this pressing plate 6 that can rise in cover for seat 5, take out this cover for seat 5 that can rise；Then screw out the push rod 3 on the left side with spanner, make the left side can rise the inner cylinder face elastic reset of cover for seat 5, thus unclamp the tensioner to left side coil rack, i.e. can use hands to take out the most bonding pendulum group completed.For convenience of taking out pendulum group, being designed with knockout pin 4, available knockout pin 4 ejects pendulum group from the left side of base 1.
Inventor experiment proves that, the interior cylinder at cover for seat center is designed as the core shaft structure that can rise, and by cylinder in cover for seat by coil rack endoporus tensioner, thus ensures coil rack center and cover for seat central coaxial；Simultaneously, cover for seat cylindrical is designed as the size as pendulum cylindrical, cover for seat cylindrical and pendulum cylindrical are all placed on same vee-block, the central coaxial of cylinder in cover for seat cylindrical and cover for seat, thus after in ensureing to be enclosed within two cover for seat, the coil rack on cylinder is bonding and pendulum central coaxial.
Those skilled in the art is easy to understand; the foregoing is only presently preferred embodiments of the present invention; not in order to limit the present invention, all any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, should be included within the scope of the present invention.
Claims (8)
1. can rise the accelerometer pendulum group adhering device of core shaft structure, adds for realization
In velometer, shaped framework coil is bonding with the high-axiality of pendulum, it is characterised in that this adhering device
Including:
Locating piece (2), it is fixedly installed on the base (1) of adhering device, this locating piece
(2) v-depression for location is had on；
Risen cover for seat (5) in tube structure, it is two, and coaxial spaced is arranged at described fixed
On the v-depression of position block (2), the respective cylinder in end that this cover for seat (5) that can rise is close to each other
Having multiple axial slits on wall, described coil rack is enclosed within this end outer peripheral face, and this end
Internal face is internal conical surface, and it can stretch at the push rod (3) with cylindrical tapered end and wherein pass through
Rise then spreading, thus will be sleeved on the gap tensioners such as described coil rack thereon and fix and protect
Card central coaxial；And
Screw rod (10), it can be arranged on the base (1) of adhering device with moving to axial,
Its one end and one of them cover for seat (5) other end end abutment that can rise, screw rod (10) another
End is provided with the handle (11) for driving screw rod (10) movement, and it drives described screw rod (10)
Mobile, thus by described one of them can rise cover for seat (5) and another cover for seat (5) phase that can rise
To both ends of the surface mutually push against so that the coil rack in both ends of the surface be arranged on location hole on also
It is positioned at pendulum between the two to compress, it is achieved high-axiality bonding.
The accelerometer pendulum group of a kind of core shaft structure that rises the most according to claim 1
Adhering device, wherein, described push rod (3) cylindrical tapered end and cover for seat (5) internal conical surface that can rise
Coaxial coupling.
The accelerometer pendulum of a kind of core shaft structure that rises the most according to claim 1 and 2
Sheet group adhering device, wherein, it is described fixed that the described cover for seat that rises (5) is pressed in by pressing plate (6)
On the v-depression of position block (2).
The accelerometer pendulum of a kind of core shaft structure that rises the most according to claim 1 and 2
Sheet group adhering device, wherein, also includes assisting sleeve (8), its be arranged on described one of them
Between the cover for seat that can rise (5) and screw rod (10) end, described screw rod (10) passes through time mobile
Described auxiliary sleeve (8) pushes against the described cover for seat (5) that can rise.
The accelerometer pendulum of a kind of core shaft structure that rises the most according to claim 1 and 2
Sheet group adhering device, wherein, described in be socketed with risen cover for seat (5) end of coil rack
Cylindrical is consistent with pendulum excircle dimension, so that the cylindrical of pendulum and cover for seat (5) end of can rising
Accurate positioning also ensures coaxial, so that described coil rack and pendulum central coaxial.
The accelerometer pendulum of a kind of core shaft structure that rises the most according to claim 1 and 2
Sheet group adhering device, wherein, the respective cylinder in end that the described cover for seat that rises (5) is close to each other
Axial slits on wall is circumferentially evenly arranged, so that end circumference barrel is uniformly divided into polylith,
Gap quantity is 3-6 bar.
The accelerometer pendulum of a kind of core shaft structure that rises the most according to claim 1 and 2
Sheet group adhering device, wherein, in relatively having in the barrel inwall of the described cover for seat that rises (5)
The other end of taper seat has screw thread, and described push rod (3) is threaded connection and this seat that can rise
Set (5) connects also thus relative movement within it is to realize tensioner or to unclamp.
The accelerometer pendulum of a kind of core shaft structure that rises the most according to claim 1 and 2
Sheet group adhering device, wherein, also includes knockout pin (4), for after bonding completing, will glue
Pendulum group after connecing ejects from base (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510092819.XA CN104712626B (en) | 2015-02-28 | 2015-02-28 | Accelerometer pendulum piece set bonding device of expandable mandrel structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510092819.XA CN104712626B (en) | 2015-02-28 | 2015-02-28 | Accelerometer pendulum piece set bonding device of expandable mandrel structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104712626A CN104712626A (en) | 2015-06-17 |
| CN104712626B true CN104712626B (en) | 2017-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510092819.XA Active CN104712626B (en) | 2015-02-28 | 2015-02-28 | Accelerometer pendulum piece set bonding device of expandable mandrel structure |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107662088B (en) * | 2016-07-28 | 2019-06-25 | 航天科工惯性技术有限公司 | Accelerometer puts component and assembles localization method |
| CN108214343B (en) * | 2016-12-21 | 2021-04-27 | 航天科工惯性技术有限公司 | Pendulum assembly assembling and positioning device and assembling and positioning method |
| CN106903539B (en) * | 2017-04-12 | 2023-06-27 | 沈机集团昆明机床股份有限公司 | Measuring mandrel for positioning crankshaft hole of engine cylinder body |
| CN108825609B (en) * | 2018-07-06 | 2023-07-25 | 苏州富强科技有限公司 | Assembling system is pasted to pendulum piece subassembly |
| CN108799284A (en) * | 2018-08-09 | 2018-11-13 | 核工业理化工程研究院 | Permanent-magnet bearing adhering fixture |
| CN112692772B (en) * | 2019-10-23 | 2022-08-05 | 航天科工惯性技术有限公司 | Accelerometer movement disassembling device and method |
| CN112122649B (en) * | 2020-09-04 | 2021-09-17 | 湖北三江航天红峰控制有限公司 | Drilling and riveting pin device and method for bevel pinion of motor shaft of speed reducer |
| CN114658736B (en) * | 2020-12-23 | 2023-07-14 | 航天科工惯性技术有限公司 | Adjustable concentric positioning device and assembly method of accelerometer pendulum assembly |
| CN116206894B (en) * | 2023-03-02 | 2023-10-03 | 海安上海交通大学智能装备研究院 | Three-coil tensioning shaft mechanism |
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| JPS59107830A (en) * | 1982-12-10 | 1984-06-22 | Toshiba Corp | Assembling jig |
| NL8701211A (en) * | 1987-05-21 | 1988-12-16 | Philips Nv | ASSEMBLY INCLUDING A FIRST AND A SECOND ELEMENT ATTACHED BY THE USE OF AN ADHESIVE Glue AND A DEVICE EQUIPPED WITH THE ASSEMBLY. |
| DE29617424U1 (en) * | 1996-06-05 | 1996-12-05 | Clausnitzer Werner | Device for applying a label to a compact disc or the like. |
| CN201514529U (en) * | 2009-08-19 | 2010-06-23 | 许振相 | High-precision multifunctional automatic laminating machine |
| CN101639541B (en) * | 2009-09-07 | 2011-11-16 | 北京航天控制仪器研究所 | Accelerometer relative gravity meter |
| CN202185888U (en) * | 2011-08-03 | 2012-04-11 | 新兴重工湖北三六一一机械有限公司 | Device for mounting nylon/rubber sleeves |
| CN202517429U (en) * | 2012-03-01 | 2012-11-07 | 青岛华瑞汽车零部件有限公司 | Automatic core-expanding alignment and spiral press device |
| CN104162872B (en) * | 2014-08-06 | 2016-03-09 | 无锡鹰贝精密轴承有限公司 | Sealing ring Fast Installation machine |
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