CN106289950A - High-speed stretching centering device and method - Google Patents
High-speed stretching centering device and method Download PDFInfo
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- CN106289950A CN106289950A CN201510278863.XA CN201510278863A CN106289950A CN 106289950 A CN106289950 A CN 106289950A CN 201510278863 A CN201510278863 A CN 201510278863A CN 106289950 A CN106289950 A CN 106289950A
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000003068 static effect Effects 0.000 claims abstract description 40
- 238000009864 tensile test Methods 0.000 claims abstract description 8
- 125000006850 spacer group Chemical group 0.000 claims description 33
- 238000012360 testing method Methods 0.000 claims description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 239000004020 conductor Substances 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The device comprises a dynamic centering mechanism and a static centering mechanism, wherein the dynamic centering mechanism is arranged in a cavity of a dynamic clamp, a clamp head hole is formed in the static centering mechanism, a static clamp head is arranged in the clamp head hole, before the centering of a high-speed tensile test is carried out, a static end of a sample is inserted into the static clamp head arranged in the static centering mechanism in advance, and a dynamic end of the sample is inserted into the dynamic centering mechanism in the cavity of the dynamic clamp. Compared with the prior art, the invention has the beneficial effects that: a high-speed stretching centering device and method can simply and quickly realize the synchronous centering of a static end of a high-speed stretching sample before being clamped and a dynamic end which always keeps a free state in a limited space, thereby realizing the high-speed stretching centering; no matter how the width of the sample changes, the quick and accurate centering can be realized.
Description
Technical field
The present invention relates to the high-speed stretch measuring technology of sheet metal, particularly relate to a kind of high-speed stretch centralising device and method.
Background technology
In Research of dynamic mechanical field, due to the powerful promotion by the industry such as automobile, Aero-Space research and development demand, liquid
Pressure servo-type high speed tensile test is increasingly becoming a kind of main research and development means.
In the hydraulic servo high speed tensile test of sheet metal sample, have a kind of sample holder mode be test before clamp in advance
The static end of sample, and the dynamic end of sample is protected in the restricted clearance that lance, dynamic clamp and dynamic clamp cavity etc. surround
Hold free overhang.In process of the test, after the speed of dynamic clamp reaches preset value, clamp the dynamic end of sample again,
And then complete follow-up tension test.
This high-speed stretch sample is generally much longer than static stretch sample, if only static end being carried out centering, dynamic end is subject to
Sample effect of weight is it is difficult to ensure that synchronous centering, thus is difficult to high-precision high-speed stretch centering.And in higher test
Under speed, for guaranteeing that dynamic clamp obtains bigger accelerating travel, sample installation process needs make dynamic clamp along sample
Decline bigger distance so that dynamic end inserts in the cavity of dynamic clamp.Owing to cavity is narrow and small, if accuracy of alignment is the highest, dynamic
State end easily touches dynamic clamp and dynamic clamp cavity and impaired bending when dynamic clamp declines, and ultimately causes test failure,
Even device damage.
Existing sheet material static stretch centralising device cannot touch high-speed stretch sample because of the stop of lance, dynamic clamp etc.
Dynamic end.The most it is not specifically designed for the centering scheme of this high-speed stretch sample dynamic end being positioned at restricted clearance, because of
This can only use the extensive centering mode that range estimation+hands is touched before carrying out this test, it is difficult to ensure that the concordance of test result, simultaneously
Also the most incompatible with the high-precision requirement of dynamic test.
Summary of the invention
It is an object of the invention to provide a kind of high-speed stretch centralising device and method, the static end essence of sample can be made before the test
Really centering, also can make sample keep the dynamic end synchronous centering of free state in restricted clearance, thus realize high-precision height
Speed stretching centering.
For achieving the above object, the present invention realizes by the following technical solutions:
A kind of high-speed stretch centralising device, including dynamic centering body, static centering body, described dynamic centering body is arranged
In the cavity of dynamic clamp, being provided with collet bore on described static centering body, quiet chuck is arranged in collet bore,
Before carrying out high speed tensile test centering, in advance the static end of sample is inserted the quiet chuck being arranged in static centering body
In, the dynamic end of sample inserts in the dynamic centering body of dynamic clamp inside cavity.
Described dynamic centering body includes centering cone, spacer, clamp clip, support bar, pallet, moves carrying out high-speed stretch
During state centering, centering cone is clipped in the both sides in sample dynamic end cross section, and spacer is horizontally set on the lower section of centering cone, support bar
Being upward through from the lower end of spacer, the lower end of support bar is fixedly connected with the tray, outside the upper end of support bar and dynamic clamp
Interim fixing, between spacer and pallet, it is encased inside the clamp clip no less than.
The overall U-shaped structure of described spacer, bottom inside spacer and edge be respectively arranged with 1/2 circular hole and
One 1/4 circular hole, the diameter of the diameter of two circular holes and two lances is identical, the centre-to-centre spacing of two circular holes and two lances
Centre-to-centre spacing is identical, and during work, two lances are stuck in two circular holes, solid along the both sides of U-shape structure at the upper surface of spacer
Surely there are rectangular sheet, two rectangular sheets to be parallel to the centrage of two circular holes, and arrange for axial symmetry with the centrage of two circular holes,
The length of rectangular sheet is identical with the width of sample.
Described static centering body includes driving mechanism, follower, testing agency, covered wire, operating board, at operating board
The two ends in upper grip hole are symmetrically installed two set followers, hang down in the plane of symmetry quiet chuck work surface of two set followers
Face, the loop bar on two set followers is coaxially disposed, and described driving mechanism is arranged on operating board, the plane of symmetry of driving mechanism
Overlapping with the planes of symmetry of two set followers, one end of covered wire and the loop bar of follower are fixed and are connected, another of covered wire
Holding and be connected through the cylinder on driving mechanism and framework are fixing, the junction point of covered wire and framework is at the plane of symmetry of driving mechanism
On, connect follower isometric with the two of driving mechanism covered wires, testing agency pass through copper conductor respectively with two driven machines
The loop bar of structure connects.
Described driving mechanism includes cylinder, slide block, leading screw, leading screw support, rotation hand wheel, framework, and slide block is placed on operation
On platform, in the upper end of slide block with slide block longitudinal centre line as axis of symmetry, it is symmetrically welded two cylinders, in slide block, is provided with spiral shell
Pit, framework is fixing with operating board to be connected, and leading screw sequentially passes through the screwed hole of the endoporus of framework, slide block, and leading screw is near operation
End side sets up has leading screw support, leading screw support to be fixed on operating board, is provided with rotation hand wheel in the operating side of leading screw.
Described follower includes sleeve, loop bar, felt pad, binding post, retainer ring, and felt pad is fixed on operating board,
Sleeve is fixed on felt pad upper end, and loop bar is arranged on the inside of sleeve, sleeve and loop bar matched in clearance, and retainer ring is fixed on set
Bar is close to one end of quiet chuck, and retainer ring connects covered wire, and binding post is fixed on loop bar.
Use a kind of method that high-speed stretch centralising device carries out centering to high speed tensile test sample, walk including following methods
Rapid:
1) the static end of sample is inserted in the quiet chuck in static centering body collet bore；
2) it is gradually reduced the gap between quiet chuck and sample but guarantees that gap is not equal to zero；
3) make the loop bar in follower near sample, and guarantee that loop bar contacts with each other with sample；
4) dynamic end of sample is inserted in the cavity of dynamic clamp；
5) by the both sides of specimen cross section in the cavity of centering cone insertion dynamic clamp；Insert spacer and make lance be stuck in location
In two circular holes on sheet, and rectangular sheet is made to snap in the gap between two centering cones；
6) support bar connecting pallet in advance is fixed with dynamic clamp；
7) clamp clip is inserted until centering cone is completely fixed in the cavity of dynamic clamp；
8) the static end of fixing sample；
9) take off centralising device, complete high-speed stretch centering.
Compared with prior art, the invention has the beneficial effects as follows:
A kind of high-speed stretch centralising device and method, it is possible to the static end of high-speed stretch sample before realizing quickly and easily being clamped
And in restricted clearance, keep the synchronous centering of the dynamic end of free state all the time, thus realize high-speed stretch centering；No matter
How specimen width changes, and can realize rapid and accurate centering.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention a kind of high-speed stretch centralising device；
In figure: 1, sample；2, dynamic end；3, dynamic centering body；4, static end；5, static centering body；6、
Dynamic clamp；7, centering cone；8, spacer；9, clamp clip；10, lance；11, support bar；12, pallet；13、
Rectangular sheet；14, quiet chuck；15, driving mechanism；16, covered wire；17, follower；18, testing agency；19、
Cylinder；20, operating board；21, slide block；22, leading screw；23, leading screw support；24, rotation hand wheel；25, sleeve；26、
Loop bar；27, felt pad；28, binding post；29, retainer ring；30, framework；31, circuit tester；32, copper conductor.
Detailed description of the invention
Below in conjunction with Figure of description, the present invention is described in detail, it should be noted that the enforcement of the present invention be not limited to
Under embodiment.
As it is shown in figure 1, a kind of high-speed stretch centralising device, including dynamic centering body 3 and static centering body 5, described
Dynamically centering body 3 is arranged in the cavity of dynamic clamp 6, is provided with collet bore on described static centering body 5, quiet
Chuck 14 is arranged in collet bore, before carrying out high speed tensile test centering, is inserted by the static end 4 of sample 1 in advance
Being arranged in the quiet chuck 14 in static centering body 5, the dynamic end 2 of sample 1 inserts dynamic clamp 6 inside cavity
Dynamically in centering body 3.
Described dynamic centering body 3 includes centering cone 7, spacer 8, clamp clip 9, support bar 11, pallet 12, sample 1
When carrying out the dynamic centering of high-speed stretch, centering cone 7 is clipped in the both sides in sample 1 dynamic end 2 cross section, and spacer 8 level sets
Putting the lower section at centering cone 7, the lower end of centering cone 7 is clipped between rectangular sheet 13 and the lance 10 of spacer 8 upper end,
Strut 11 is upward through from the lower end of spacer 8, and the lower end of support bar 11 is fixing with pallet 12 to be connected, support bar 11
The outside of upper end and dynamic clamp 6 cavity is fixed temporarily, is encased inside the folder no less than between spacer 8 and pallet 12
Tight sheet 9.
Centering cone 7 is in polyhedral structure, and surface is smoothed, and including the conical surface and plane, the conical surface is towards dynamic clamp 6
Inside cavities, plane includes being positioned at sample 1 sectional side and 7 side planes are bored in the centering parallel with sample 1 cross section, and with examination
7 bottom surfaces are bored in the vertical centering in sample 1 cross section；
Support bar 11 is cylindrical structure.Pallet 12 is semi-annular structure.
Described spacer 8 thickness is 3mm, overall U-shaped structure, and bottom and edge inside spacer 8 set respectively
Being equipped with 1/2 circular hole and 1/4 circular hole, the diameter of the diameter of two circular holes and two lances 10 is identical, two circular holes
Centre-to-centre spacing identical with the centre-to-centre spacing of two lances 10, be 90mm, during work, two lances 10 are stuck in two circular holes
In, the upper surface at spacer 8 is fixed with rectangular sheet 13 along the both sides of U-shape structure, and two rectangular sheets 13 are parallel to two
The centrage of circular hole, and arrange with the centrage of two circular holes for axial symmetry, the length of rectangular sheet 13 and the width of sample 1
Identical, the width of rectangular sheet 13 is 5mm, and thickness is 2mm.
The shape of clamp clip 9 with to remove the spacer 8 after rectangular sheet 13 identical, thickness specification 0.01mm of clamp clip 9,
0.02mm, 0.03mm,..., until 1mm, each specification clamp clip 9 all has 50.
Described static centering body 5 includes driving mechanism 15, follower 17, testing agency 18, covered wire 16, operation
Platform 20, is symmetrically installed two set followers 17, the symmetry of two set followers 17 at the two ends in operating board 20 upper grip hole
Face is the middle vertical plane of quiet chuck 14 work surface, and the loop bar 26 on two set followers 17 is coaxially disposed, described driving mechanism
15 are arranged on operating board 20, and the plane of symmetry of the plane of symmetry of driving mechanism 15 and two set followers 17 overlaps, covered wire
One end of 16 is fixing with the loop bar 26 of follower 17 to be connected, and the other end of covered wire 16 is through the circle on driving mechanism 15
Cylinder 19 is fixing with framework 30 to be connected, and the junction point of covered wire 16 and framework 30 is on the plane of symmetry of driving mechanism 15, even
Connect follower 17 isometric with the two of driving mechanism 15 covered wires 16, testing agency 18 by copper conductor 32 respectively with
The loop bar 26 of two followers 17 connects.
Covered wire 16 is the inelastic soft insulating line of diameter 3mm.
Described driving mechanism 15 includes cylinder 19, slide block 21, leading screw 22, leading screw support 23, rotation hand wheel 24, framework
30, slide block 21 is placed on operating board 20, in the upper end of slide block 21 with slide block longitudinal centre line as axis of symmetry, and balanced welding
Connecing two cylinders 19, be provided with screwed hole in slide block 21, framework 30 is fixing with operating board 20 to be connected, and leading screw 22 is successively
Through endoporus, the screwed hole of slide block 21 of framework 30, leading screw 22 sets up near side, operating side leading screw support 23, silk
Thick stick support 23 is fixed on operating board 20, is provided with rotation hand wheel 24 in the operating side of leading screw 22.
Cylinder 19 is the steel pipe of diameter 4mm.
Cylinder 19 axis of driving mechanism 15 slide block 21 upper end and loop bar 26 axis of follower 17 are in same level
On.
Driving mechanism 15 generally symmetrical structure, the longitudinal centre line of slide block 21, the axis of symmetry of cylinder 19 and leading screw 22
Centrage all fall on the plane of symmetry of driving mechanism 15.
Described follower 17 includes sleeve 25, loop bar 26, felt pad 27, binding post 28, retainer ring 29, insulation
Pad 27 is fixed on operating board 20, and sleeve 25 is fixed on felt pad 27 upper end, and loop bar 26 is arranged on the inside of sleeve 25,
Sleeve 25 and loop bar 26 matched in clearance, retainer ring 29 is fixed on loop bar 26 one end close to quiet chuck 14, retainer ring 29
Connecting covered wire 16, binding post 28 is fixed on the outboard end of loop bar 26.
Retainer ring 29 is welded on the side on loop bar 26 towards driving mechanism 15, and two loop bars 26 are welded and fixed ring 29
Position identical.
Described testing agency 18 includes circuit tester 31, copper conductor 32, and the both positive and negative polarity of circuit tester 31 connects copper conductor 32 respectively.
The other end of copper conductor 32 is connected with the binding post 28 on loop bar 26.
High-speed stretch sheet metal sample 1 thickness 2mm in the present embodiment, retaining part width 25mm, dynamic end 2 is long
Degree 300mm, static end 4 length 100mm.Use a kind of high-speed stretch centralising device that sample 1 is carried out high-speed stretch pair
In method, including following methods step:
1) by when moving on dynamic clamp 6 almost close to lance 10 upper end, the static end 4 of sample 1 is vertically inserted
Enter to unclamp in advance between two quiet chucks 14 of 5mm；
2) such as the 1st) step operation after still can not sample 1 be put between two quiet chucks 14 safety and nondestructive, then will dynamically press from both sides
Have on the crossbeam at 6 places and move, make sample 1 be exactly fitted between two quiet chucks 14；
3) tighten the fastening bolt of quiet chuck 14, make the work surface of quiet chuck 14 less than 1mm but guarantee with sample 1 gap
It is not equal to zero；
4) wire connecting line road is checked, it is ensured that copper conductor 32 is correct with the connection of each mechanism, opens circuit tester 31, pushes electricity
Resistance shelves；
5) pull rotation hand wheel 24 (when leading screw 22 screw thread is right-handed thread, to pull rotation hand wheel 24 counterclockwise, work as leading screw
When 22 screw threads are left hand thread, pull rotation hand wheel 24 clockwise), make slide block 21 drive cylinder 19 to move to sample 1 direction
Dynamic, now covered wire 16 drives two loop bars 26 to move to sample 1 direction under the effect of cylinder 19；
After the loop bar 26 of side touches sample 1, sample 1 can be promoted to another direction, due to two loop bars 26
It is symmetrically arranged for the plane of symmetry with the middle vertical plane of chuck 14 work surface, is therefore all adequately exposed to sample when two loop bars 26
When 1, the static end 4 of sample 1 can automatic centering.
6) when loop bar 26 is fully contacted sample 1, check circuit tester 31 reading immediately, until resistance is zero, then unclamp hands
Wheel 24；
7) make dynamic clamp 6 slowly move down, be unlikely to contact in guiding sample 1 to penetrate the cavity of dynamic clamp 6 dynamic simultaneously
Any position of state fixture 6；
8) if after dynamic clamp 6 is displaced downwardly to limit inferior, sample 1 is still introduced in the cavity of dynamic clamp 6, then move down horizontal stroke
Beam makes dynamic clamp 6 move down and continues to guide the upper surface of sample 1 dynamic end 2 to dynamic end 2 distance from top cavity about
The position of 10mm；
9) 7 opening parts from dynamic clamp 6 cavity side are bored in two centerings of dynamic centering body 3 and insert lance 10 He
Space between sample 1, makes the top of two centering cones 7 upward, and side plane is towards the cross section of sample 1；By spacer 8
It is horizontally inserted lance 10 and sample 1, and makes 1/2 circle on spacer 8 and 1/4 circle be stuck on former and later two lances 10,
Move up and down spacer 8 and centering cone 7 along lance 10, and adjust the direction of two rectangular sheets 13 on spacer 8, make two
Individual rectangular sheet 13 all just snaps in two centerings along its length and bores in the space that 7 side planes are constituted；
Now the dynamic end 2 of sample 1 is by preliminary centering on the basis of the centre-to-centre spacing of lance 10.
10) in advance the lower end of two support bars 11 is connected with two pallets 12 respectively, then by before two support bars 11 1
Pass perpendicularly through in the middle part of spacer 8 along lance 10 after one, and by the outside of the upper end of support bar 11 Yu dynamic clamp 6 cavity
Fixing connection；
It is provided with screwed hole on support bar 11, is also provided with screwed hole, support bar in the relevant position, outside of dynamic clamp 6 cavity
11 are bolted to connection with dynamic clamp 6.
11) by 9,5 thickness 0.02mm's of clamp clip of 9,8 thickness 0.05mm of clamp clip of 10 thickness 1mm
Clamp clip 9, and the clamp clip 9 of 2 thickness 0.02mm is horizontally inserted between spacer 8 and pallet 12 successively so that
Spacer 8 and centering cone 7 are move upwardly until centering cone 7 and are stuck in the upper surface of dynamic clamp 6 cavity completely；
Now the dynamic end 2 of sample 1 by final centering and positions.
12) pulling handwheel 24 the most clockwise, the resistance making circuit tester 31 is zero, tightens quiet chuck 14 the most completely simultaneously,
The static end 4 making sample 1 is completely fixed；
13) take off all parts of dynamic centering body 3 successively, complete the high-speed stretch centering of sample 1.
Claims (7)
1. a high-speed stretch centralising device, it is characterised in that include dynamic centering body, static centering body, described
Dynamically centering body is arranged in the cavity of dynamic clamp, is provided with collet bore on described static centering body, and quiet chuck sets
Put in collet bore, before carrying out high speed tensile test centering, the static end of sample is inserted be arranged on static centering in advance
In quiet chuck in mechanism, the dynamic end of sample inserts in the dynamic centering body of dynamic clamp inside cavity.
A kind of high-speed stretch centralising device the most according to claim 1, it is characterised in that: described dynamic centering body
Including centering cone, spacer, clamp clip, support bar, pallet, when carrying out the dynamic centering of high-speed stretch, centering cone is clipped in
The both sides in sample dynamic end cross section, spacer is horizontally set on the lower section of centering cone, and support bar is upwards worn from the lower end of spacer
Crossing, the lower end of support bar is fixedly connected with the tray, and fixes outside the upper end of support bar and dynamic clamp temporarily, spacer with
The clamp clip no less than one it is encased inside between pallet.
A kind of high-speed stretch centralising device the most according to claim 2, it is characterised in that: described spacer is overall in U
Type structure, bottom and edge inside spacer are respectively arranged with 1/2 circular hole and 1/4 circular hole, two circular holes
Diameter and the diameter of two lances identical, the centre-to-centre spacing of two circular holes is identical with the centre-to-centre spacing of two lances, during work, two
Individual lance is stuck in two circular holes, and the upper surface at spacer is fixed with rectangular sheet along the both sides of U-shape structure, two rectangular sheets
It is parallel to the centrage of two circular holes, and arranges for axial symmetry with the centrage of two circular holes, the length of rectangular sheet and sample
Width is identical.
A kind of high-speed stretch centralising device the most according to claim 1, it is characterised in that: described static centering body
Including driving mechanism, follower, testing agency, covered wire, operating board, in the two ends symmetry peace in operating board upper grip hole
Filling two set followers, the plane of symmetry of two set followers is the middle vertical plane of quiet chuck work surface, the set on two set followers
Bar is coaxially disposed, and described driving mechanism is arranged on operating board, the plane of symmetry of driving mechanism and the plane of symmetry of two set followers
Overlapping, one end of covered wire is fixing with the loop bar of follower to be connected, and the other end of covered wire is through the cylinder on driving mechanism
Fixing with framework and be connected, the junction point of covered wire and framework, on the plane of symmetry of driving mechanism, connects follower and mover
Two covered wires of structure are isometric, and testing agency passes through the copper conductor loop bar respectively with two followers and is connected.
A kind of high-speed stretch centralising device the most according to claim 4, it is characterised in that: described driving mechanism includes
Cylinder, slide block, leading screw, leading screw support, rotation hand wheel, framework, slide block is placed on operating board, in the upper end of slide block with
Slide block longitudinal centre line is axis of symmetry, is symmetrically welded two cylinders, is provided with screwed hole in slide block, and framework is solid with operating board
Fixed connection, leading screw sequentially passes through the screwed hole of the endoporus of framework, slide block, and leading screw sets up near side, operating side leading screw support,
Leading screw support is fixed on operating board, is provided with rotation hand wheel in the operating side of leading screw.
A kind of high-speed stretch centralising device the most according to claim 4, it is characterised in that: described follower includes
Sleeve, loop bar, felt pad, binding post, retainer ring, felt pad is fixed on operating board, and sleeve is fixed on felt pad
End, loop bar is arranged on the inside of sleeve, sleeve and loop bar matched in clearance, and retainer ring is fixed on loop bar one end close to quiet chuck,
Retainer ring connects covered wire, and binding post is fixed on loop bar.
7. the high-speed stretch centralising device that a kind uses described in claim 1 carries out the side of centering to high speed tensile test sample
Method, it is characterised in that include following methods step:
1) the static end of sample is inserted in the quiet chuck in static centering body collet bore；
2) it is gradually reduced the gap between quiet chuck and sample but guarantees that gap is not equal to zero；
3) make the loop bar in follower near sample, and guarantee that loop bar contacts with each other with sample；
4) dynamic end of sample is inserted in the cavity of dynamic clamp；
5) by the both sides of specimen cross section in the cavity of centering cone insertion dynamic clamp；Insert spacer and make lance be stuck in location
In two circular holes on sheet, and rectangular sheet is made to snap in the gap between two centering cones；
6) support bar connecting pallet in advance is fixed with dynamic clamp；
7) clamp clip is inserted until centering cone is completely fixed in the cavity of dynamic clamp；
8) the static end of fixing sample；
9) take off centralising device, complete high-speed stretch centering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510278863.XA CN106289950B (en) | 2015-05-27 | 2015-05-27 | High-speed stretching centering device and method |
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| CN201510278863.XA CN106289950B (en) | 2015-05-27 | 2015-05-27 | High-speed stretching centering device and method |
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| CN106289950B CN106289950B (en) | 2023-05-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107727487A (en) * | 2017-11-20 | 2018-02-23 | 北京科技大学 | Material at high temperature Mechanics Performance Testing equipment under a kind of aerothermodynamic coupling environment |
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| FR2722881A1 (en) * | 1994-07-19 | 1996-01-26 | Aerospatiale | Flat sample holding device for high temperature traction testing |
| CN201707256U (en) * | 2010-05-31 | 2011-01-12 | 武汉钢铁(集团)公司 | Sample vertical centering clamp for tensile testing machine |
| KR20120121803A (en) * | 2011-04-27 | 2012-11-06 | 현대제철 주식회사 | Jig for aligning tension sample and tension test apparatus having the same |
| CN202188986U (en) * | 2011-09-08 | 2012-04-11 | 中国石油天然气集团公司管材研究所 | Positioning and centering clamping tool |
| CN103323329A (en) * | 2013-07-08 | 2013-09-25 | 山东大学 | Test method for performing rock direct stretching by using axial centering positioning device |
| CN203616198U (en) * | 2013-12-06 | 2014-05-28 | 中国飞机强度研究所 | Novel test centering device |
| CN203629957U (en) * | 2013-12-09 | 2014-06-04 | 浙江大学 | Tensile test clamp of high-pressure hydrogen environmental material testing machine |
| CN103712851A (en) * | 2013-12-20 | 2014-04-09 | 浙江大学 | High-pressure hydrogen environment fatigue test clamp for material testing machine |
| CN204177664U (en) * | 2014-03-28 | 2015-02-25 | 云南电力试验研究院（集团）有限公司电力研究院 | A kind of aligning device for sheet coupon tension test |
| CN204694541U (en) * | 2015-05-27 | 2015-10-07 | 鞍钢股份有限公司 | High-speed stretching centering device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107727487A (en) * | 2017-11-20 | 2018-02-23 | 北京科技大学 | Material at high temperature Mechanics Performance Testing equipment under a kind of aerothermodynamic coupling environment |
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