CN103639940A - Fluid plastic thin-wall elastic sleeve clamp with magnetic isolation performance - Google Patents
Fluid plastic thin-wall elastic sleeve clamp with magnetic isolation performance Download PDFInfo
- Publication number
- CN103639940A CN103639940A CN201310699712.2A CN201310699712A CN103639940A CN 103639940 A CN103639940 A CN 103639940A CN 201310699712 A CN201310699712 A CN 201310699712A CN 103639940 A CN103639940 A CN 103639940A
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- China
- Prior art keywords
- clamp body
- water channel
- cooling water
- thin
- bolt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000004033 plastic Substances 0.000 title claims abstract description 20
- 229920003023 plastic Polymers 0.000 title claims abstract description 20
- 238000002955 isolation Methods 0.000 title abstract 5
- 239000012530 fluid Substances 0.000 title abstract 3
- 239000000498 cooling water Substances 0.000 claims abstract description 51
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 11
- 229910000889 permalloy Inorganic materials 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 238000012360 testing method Methods 0.000 abstract description 15
- 230000005389 magnetism Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
Abstract
The invention discloses a fluid plastic thin-wall elastic sleeve clamp with magnetic isolation performance. The clamp comprises a clamp body provided with a non-standard flange, a steel ball, an exhaust bolt, magnetic isolation sleeves and a pressure device consisting of a screw bolt, a sliding column, a sliding column sleeve and a rubber sealing ring, wherein a thin-wall elastic sleeve penetrates in the clamp body; an exhaust port is subjected to contact seal by the steel ball and a taper hole line and pressed by the exhaust bolt; the pressure device is arranged in the non-standard flange; the clamp body is provided with a first cooling water channel, a second cooling water channel, a third cooling water channel, a fourth cooling water channel and a fifth cooling water channel; the clamp body is sleeved with the magnetic isolation sleeves; and liquid plastics are filled between the clamp body and the thin-wall elastic sleeve. The fluid plastic thin-wall elastic sleeve clamp with the magnetic isolation performance is high in centering accuracy and convenient to mount, and clamp force on a test piece during clamping is uniform; magnetism of the clamp can be prevented from disturbing an internal magnetic field of a tester, and a radiator is arranged, so that the clamp can operate in an appropriate temperature range; and the clamp can be applicable to various loading modes, can be applied to other equipment and is good in portability.
Description
Technical field
The present invention relates to a kind of testing machine fixture used, particularly a kind of liquid plastics thin-walled resilient sleeve fixture having every magnetic.
Technical background
It is the trend of future development that multi-load pattern and multiple physical field coupling process combine.At present, the loading of testing machine by certain single load modes such as impression, stretching, bendings to stretching-crooked, stretch-reverse, impression-multi-load mode developments such as bending, because any material and goods all can inevitably be subject to dynamo-electric pyromagnetic multiple physical field coupling or impact in process under arms, what the magnetic field environment that makes environment try (thermocycling) and testing machine required increases, so existing grip of testing machine is applied and is restricted on multi-load pattern and multiple physical field coupling test machine.And the clamping force of fixture is inhomogeneous during due to clamping, can make test specimen produce distortion and then experimental result is exerted an influence.And existing grip of testing machine generally adopts mechanical interlocking, handling difficulties, waste time and energy, efficiency is low, when experiment in enormous quantities, can bring very large labour intensity.
Summary of the invention
The object of this invention is to provide a kind of liquid plastics thin-walled resilient sleeve fixture having every magnetic.
The present invention is by the clamp body with nonstandard of flanges, thin-walled resilient sleeve, turn bolt, traveller, slide rod sleeve, rubber seal, steel ball, exhaust bolt and magnetic shield form, thin-walled resilient sleeve is located in clamp body, turn bolt, traveller, slide rod sleeve and rubber seal form pressue device, turning bolt is connected with clamp body by screw thread pair, the inner side that turns bolt is connected with traveller by hook-like means, traveller is provided with slide rod sleeve outward, two rubber seal on traveller, have been brought up, play sealing function, turn bolt, traveller, slide rod sleeve and rubber seal are arranged in the through hole of the nonstandard of flanges of clamp body, the other end of through hole has exhaust outlet, the outside of exhaust outlet is bellmouth, bellmouth is outward screw, steel ball is arranged in bellmouth, exhaust bolt is screwed onto in screw, exhaust ports is used steel ball and bellmouth line contact sealing, with exhaust bolt, compress, the nonstandard of flanges level of clamp body offers the first cooling water channel and the 3rd cooling water channel, in clamp body cylinder, vertically offer the second cooling water channel of the open annular of three levels, the 4th cooling water channel, the 5th cooling water channel, between clamp body flange water channel and clamp body cylinder water channel, offer four the 6th vertical cooling water channels, the 7th cooling water channel, the 8th cooling water channel and the 9th cooling water channel are communicated with clamp body flange water channel and clamp body cylinder water channel, the nonstandard of flanges of clamp body vertically offers four ring flange through holes, the outer sheathed magnetic shield of clamp body, in clamp body, there is oblique cavity, tiltedly cavity becomes 15 ° of angles with thin-walled resilient sleeve axis, between described clamp body and thin-walled resilient sleeve, be filled with liquid plastics.
Described hook-like means is to be processed into hook structure turning bolt bottom, and projection is processed at traveller top, and the projection of traveller is positioned at the hook structure that turns bolt.
Between described clamp body and thin-walled resilient sleeve, it is interference fit.
Described clamp body material is not magnetic stainless steel.
The material of described magnetic shield is permalloy.
The material of described thin-walled resilient sleeve is 65Mn, and quenching hardness is HRC40～45.
Beneficial effect of the present invention:
1, centering precision is high, easy to loading and unloading, simple in structure, and cost is low, and the clamping force to test specimen during clamping is even.
The magnetic that 2, can prevent fixture itself, to testing machine internal magnetic field generation interference, is provided with heat abstractor and can keeps fixture in suitable temperature range work.
3, this fixture can adapt to multiple load mode, can be applied on other equipment, and transplantability is good.
Accompanying drawing explanation
Fig. 1 is three-dimensional cutaway view of the present invention.
Fig. 2 is perspective exploded view of the present invention.
Fig. 3 is cutaway view of the present invention.
Fig. 4 is that A-A in Fig. 3 is to cutaway view.
Fig. 5 is pressue device schematic perspective view of the present invention.
Fig. 6 is thin-walled resilient sleeve schematic perspective view of the present invention.
Fig. 7 is magnetic shield schematic perspective view of the present invention.
Wherein: 1-clamp body, 2-thin-walled resilient sleeve, 3-turn bolt, 4-traveller, 5-slide rod sleeve, 6-rubber seal, 7-steel ball, 8-exhaust bolt, 9-magnetic shield, the 10-the first cooling water channel, the 11-the second cooling water channel, the 12-the three cooling water channel, 13-nonstandard of flanges, oblique cavity in 14-clamp body, 15-exhaust outlet, 16-bellmouth, 17-ring flange through hole, 18-turn bolt bottom hook structure, 19-traveller top bump structure, 20-clamp body nonstandard of flanges through hole, 21-clamp body screw, the 22-the four cooling water channel, the 23-the five cooling water channel, the 24-the six cooling water channel, the 25-the seven cooling water channel, the 26-the eight cooling water channel, the 27-the nine cooling water channel.
The specific embodiment
Refer to shown in Fig. 1 and Fig. 2, the present embodiment is by the clamp body 1 with nonstandard of flanges 13, thin-walled resilient sleeve 2, turn bolt 3, traveller 4, slide rod sleeve 5, rubber seal 6, steel ball 7, exhaust bolt 8 and magnetic shield 9 form, and thin-walled resilient sleeve 2 is located in clamp body 1, and the shape of thin-walled resilient sleeve 2 as shown in Figure 6, turns bolt 3, traveller 4, slide rod sleeve 5 and rubber seal 6 form pressue device, turn bolt 3 and are connected with clamp body 1 by screw thread pair, and the inner side that turns bolt 3 is connected with traveller 4 by hook-like means, the outer slide rod sleeve 5 that is provided with of traveller 4, on traveller 4, bring up two rubber seal 6, played sealing function, turned bolt 3, traveller 4, slide rod sleeve 5 and rubber seal 6 are arranged in the through hole 20 of the nonstandard of flanges 13 of clamp body 1, as shown in Figure 3 and Figure 4, the other end of through hole 20 has exhaust outlet 15, the outside of exhaust outlet 15 is bellmouth 16, bellmouth 16 is outer is screw 21, and steel ball 7 is arranged in bellmouth 16, and exhaust bolt 8 is screwed onto in screw 21, exhaust outlet 15 places are used steel ball 7 and bellmouth 16 line contact sealings, with exhaust bolt 8, compress, nonstandard of flanges 13 levels of clamp body 1 offer the first cooling water channel 10 and the 3rd cooling water channel 12, in clamp body cylinder, vertically offer the second cooling water channel 11 of the open annular of three levels, the 4th cooling water channel 22, the 5th cooling water channel 23, between clamp body flange water channel and clamp body cylinder water channel, offer four the 6th vertical cooling water channels 24, the 7th cooling water channel 25, the 8th cooling water channel 26 and the 9th cooling water channel 27 are communicated with clamp body flange water channel and clamp body cylinder water channel, the nonstandard of flanges 13 of clamp body 1 vertically offers four ring flange through holes 17, the outer sheathed magnetic shield 9 of clamp body 1, the structure of magnetic shield 9 as shown in Figure 7, in clamp body 1, there is oblique cavity 14, tiltedly cavity 14 becomes 15 ° of angles with thin-walled resilient sleeve 2 axis, between described clamp body 1 and thin-walled resilient sleeve 2, be filled with liquid plastics.
The formula of described liquid plastics is Corvic 15%, plasticizer DBP 83%, and stabilizing agent calcium stearate 2%, diluent vacuum oil is appropriate.
As shown in Figure 5, described hook-like means is to be processed into hook structure 18 turning bolt 3 bottoms, and projection 19 is processed at traveller 4 tops, and the projection of traveller 4 is positioned at the hook structure 18 that turns bolt 3.
Between described clamp body 1 and thin-walled resilient sleeve 2, it is interference fit.
Described clamp body 1 material is not magnetic stainless steel.
The material of described magnetic shield 9 is permalloy.
The material of described thin-walled resilient sleeve 2 is 65Mn, and quenching hardness is HRC40～45.
The course of work of the present invention and principle are:
Nonstandard of flanges 13 is cast as one with clamp body 1, nonstandard of flanges 13 levels of clamp body 1 offer the first cooling water channel 10 and the 3rd cooling water channel 12, in clamp body cylinder, vertically offer the second cooling water channel 11, the 4th cooling water channel 22, the 5th cooling water channel 23 of the open annular of three levels, between clamp body flange water channel and clamp body cylinder water channel, offer four vertical the 6th cooling water channel 24, the 7th cooling water channel 25, the 8th cooling water channel 26 and the 9th cooling water channels 27 clamp body flange water channel and clamp body cylinder water channel are communicated with.The interior oblique cavity 14 of clamp body 1 becomes 15 ° of angles with thin-walled resilient sleeve axis, and to make up the defect of liquid plastics poor fluidity, bellmouth 16 coordinates and plays sealing function with steel ball 7.Magnetic shield 9 is formed by permalloy system, can reduce clamp body 1 self with the leakage of magnetic, reduce the interference to the magnetic field of testing machine.
The present invention matches with non-standard flange dish corresponding on testing machine by the nonstandard of flanges dish 1 on clamp body 1.During clamping, with torque spanner and six prisms, turn bolt 3, by turning the hook structure 18 of bolt 3 bottoms and the projection at traveller 4 tops 19 structures, drive travellers 4 to do axially-movable, and then extruding liquid plastics, because liquid plastics is incompressible, thereby force radially internal expanding of elastic thin-wall resilient sleeve 2, and test specimen is produced to pressure, thereby make test specimen obtain centering, clamp.When fixture need to dispel the heat, can make cooling water in circulating state by outside water pump and water-supply-pipe, and then play the effect of heat radiation.Clamp body 1 material is that not magnetic stainless steel prevents the magnetic field generation interference that fixture band is magnetic to testing machine, and the magnetic shield 9 outside clamp body 1 can further reduce the impact on magnetic field.When pressure is excessive, exhaust outlet 15 also can play release effect.
Claims (6)
1. the liquid plastics thin-walled resilient sleeve fixture having every magnetic, it is characterized in that: be by the clamp body with nonstandard of flanges (13) (1), thin-walled resilient sleeve (2), turn bolt (3), traveller (4), slide rod sleeve (5), rubber seal (6), steel ball (7), exhaust bolt (8) and magnetic shield (9) form, thin-walled resilient sleeve (2) is located in clamp body (1), turn bolt (3), traveller (4), slide rod sleeve (5) and rubber seal (6) form pressue device, turning bolt (3) is connected with clamp body (1) by screw thread pair, the inner side that turns bolt (3) is connected with traveller (4) by hook-like means, the outer slide rod sleeve (5) that is provided with of traveller (4), two rubber seal (6) on traveller (4), have been brought up, play sealing function, turn bolt (3), traveller (4), slide rod sleeve (5) and rubber seal (6) are arranged in the through hole (20) of the nonstandard of flanges (13) of clamp body (1), the other end of through hole (20) has exhaust outlet (15), the outside of exhaust outlet (15) is bellmouth (16), bellmouth (16) is outer is screw (21), steel ball (7) is arranged in bellmouth (16), exhaust bolt (8) is screwed onto in screw (21), exhaust outlet (15) locates to use steel ball (7) and bellmouth (16) line contact sealing, with exhaust bolt (8), compress, nonstandard of flanges (13) level of clamp body (1) offers the first cooling water channel (10) and the 3rd cooling water channel (12), in clamp body cylinder, vertically offer second cooling water channel (11) of the open annular of three levels, the 4th cooling water channel (22), the 5th cooling water channel (23), between clamp body flange water channel and clamp body cylinder water channel, offer four the 6th vertical cooling water channels (24), the 7th cooling water channel (25), the 8th cooling water channel (26) and the 9th cooling water channel (27) are communicated with clamp body flange water channel and clamp body cylinder water channel, the nonstandard of flanges (13) of clamp body (1) vertically offers four ring flange through holes (17), the outer sheathed magnetic shield (9) of clamp body (1), in clamp body (1), there is oblique cavity (14), tiltedly cavity (14) becomes 15 ° of angles with thin-walled resilient sleeve (2) axis, between described clamp body (1) and thin-walled resilient sleeve (2), be filled with liquid plastics.
2. a kind of liquid plastics thin-walled resilient sleeve fixture having every magnetic according to claim 1, it is characterized in that: described hook-like means is to be processed into hook structure (18) turning bolt (3) bottom, projection (19) is processed at traveller (4) top, and the projection of traveller (4) is positioned at the hook structure (18) that turns bolt (3).
3. a kind of liquid plastics thin-walled resilient sleeve fixture having every magnetic according to claim 1, is characterized in that: between described clamp body (1) and thin-walled resilient sleeve (2), be interference fit.
4. a kind of liquid plastics thin-walled resilient sleeve fixture having every magnetic according to claim 1, is characterized in that: described clamp body (1) material is not magnetic stainless steel.
5. a kind of liquid plastics thin-walled resilient sleeve fixture having every magnetic according to claim 1, is characterized in that: the material of described magnetic shield (9) is permalloy.
6. a kind of liquid plastics thin-walled resilient sleeve fixture having every magnetic according to claim 1, is characterized in that: the material of described thin-walled resilient sleeve (2) is 65Mn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310699712.2A CN103639940B (en) | 2013-12-19 | 2013-12-19 | Fluid plastic thin-wall elastic sleeve clamp with magnetic isolation performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310699712.2A CN103639940B (en) | 2013-12-19 | 2013-12-19 | Fluid plastic thin-wall elastic sleeve clamp with magnetic isolation performance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103639940A true CN103639940A (en) | 2014-03-19 |
| CN103639940B CN103639940B (en) | 2015-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310699712.2A Expired - Fee Related CN103639940B (en) | 2013-12-19 | 2013-12-19 | Fluid plastic thin-wall elastic sleeve clamp with magnetic isolation performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103639940B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106679569A (en) * | 2017-02-21 | 2017-05-17 | 成都飞机工业（集团）有限责任公司 | Visual measuring adapter for hole axis |
| CN109372875A (en) * | 2018-11-20 | 2019-02-22 | 中国航发贵州黎阳航空动力有限公司 | A kind of big pressure nut of micro- torque |
| CN109443911A (en) * | 2018-12-14 | 2019-03-08 | 东莞理工学院 | One kind micro travel test fixture used in stable state high-intensity magnetic field |
| CN113977499A (en) * | 2021-12-23 | 2022-01-28 | 沈阳华天航空机械有限公司 | Cabin cover air tightness test clamp |
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|---|---|---|---|---|
| US4018429A (en) * | 1976-04-29 | 1977-04-19 | Jury Pavlovich Alafuzov | Vertical multiple-spindle machine |
| FR2335303A1 (en) * | 1975-12-20 | 1977-07-15 | Blumle Rudi | DEVICE FOR THE PRECISE ASSEMBLY OF BLANKETS TO BE MACHINED, AND METHOD FOR THE MANUFACTURE OF THIS DEVICE |
| DE3301178A1 (en) * | 1983-01-15 | 1984-07-19 | Rudi 7000 Stuttgart Blümle | METHOD FOR PRODUCING A MASTER PLATE AND THE MASTER PLATE THEREFORE PRODUCED WITH FITTING HOLES ARRANGED IN PRESET COORDINATE DISTANCES |
| CN201287270Y (en) * | 2008-10-31 | 2009-08-12 | 中国北车集团大连机车研究所有限公司 | Mandrel body for lathe work of pressure booster primary shaft |
| CN202207910U (en) * | 2011-09-06 | 2012-05-02 | 滨州盟威斯林格缸套有限公司 | Special liquid plastic clamp for thin-walled environment-friendly cylinder sleeve |
| CN202399028U (en) * | 2011-11-21 | 2012-08-29 | 徐州市恒基伟业建材发展有限公司 | Clamping tool for cylindrical workpiece |
| CN202752871U (en) * | 2012-08-24 | 2013-02-27 | 浙江虎鼎机械制造有限公司 | Liquidity plastic clamping mould of numerically controlled lathe and used for sleeve production |
| CN103121170A (en) * | 2011-11-21 | 2013-05-29 | 徐州市恒基伟业建材发展有限公司 | Clamping tool for cylinder-type workpiece |
| CN203712542U (en) * | 2013-12-19 | 2014-07-16 | 吉林大学 | Magnetic separating liquid plastic thin-walled elastic sleeve fixture |
-
2013
- 2013-12-19 CN CN201310699712.2A patent/CN103639940B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2335303A1 (en) * | 1975-12-20 | 1977-07-15 | Blumle Rudi | DEVICE FOR THE PRECISE ASSEMBLY OF BLANKETS TO BE MACHINED, AND METHOD FOR THE MANUFACTURE OF THIS DEVICE |
| US4018429A (en) * | 1976-04-29 | 1977-04-19 | Jury Pavlovich Alafuzov | Vertical multiple-spindle machine |
| DE3301178A1 (en) * | 1983-01-15 | 1984-07-19 | Rudi 7000 Stuttgart Blümle | METHOD FOR PRODUCING A MASTER PLATE AND THE MASTER PLATE THEREFORE PRODUCED WITH FITTING HOLES ARRANGED IN PRESET COORDINATE DISTANCES |
| CN201287270Y (en) * | 2008-10-31 | 2009-08-12 | 中国北车集团大连机车研究所有限公司 | Mandrel body for lathe work of pressure booster primary shaft |
| CN202207910U (en) * | 2011-09-06 | 2012-05-02 | 滨州盟威斯林格缸套有限公司 | Special liquid plastic clamp for thin-walled environment-friendly cylinder sleeve |
| CN202399028U (en) * | 2011-11-21 | 2012-08-29 | 徐州市恒基伟业建材发展有限公司 | Clamping tool for cylindrical workpiece |
| CN103121170A (en) * | 2011-11-21 | 2013-05-29 | 徐州市恒基伟业建材发展有限公司 | Clamping tool for cylinder-type workpiece |
| CN202752871U (en) * | 2012-08-24 | 2013-02-27 | 浙江虎鼎机械制造有限公司 | Liquidity plastic clamping mould of numerically controlled lathe and used for sleeve production |
| CN203712542U (en) * | 2013-12-19 | 2014-07-16 | 吉林大学 | Magnetic separating liquid plastic thin-walled elastic sleeve fixture |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106679569A (en) * | 2017-02-21 | 2017-05-17 | 成都飞机工业（集团）有限责任公司 | Visual measuring adapter for hole axis |
| CN109372875A (en) * | 2018-11-20 | 2019-02-22 | 中国航发贵州黎阳航空动力有限公司 | A kind of big pressure nut of micro- torque |
| CN109443911A (en) * | 2018-12-14 | 2019-03-08 | 东莞理工学院 | One kind micro travel test fixture used in stable state high-intensity magnetic field |
| CN113977499A (en) * | 2021-12-23 | 2022-01-28 | 沈阳华天航空机械有限公司 | Cabin cover air tightness test clamp |
| CN113977499B (en) * | 2021-12-23 | 2022-04-05 | 沈阳华天航空机械有限公司 | Cabin cover air tightness test clamp |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103639940B (en) | 2015-06-17 |
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Granted publication date: 20150617 |