CN100425399C - Method for installing blind threaded inserts - Google Patents
Method for installing blind threaded inserts Download PDFInfo
- Publication number
- CN100425399C CN100425399C CNB2004800172040A CN200480017204A CN100425399C CN 100425399 C CN100425399 C CN 100425399C CN B2004800172040 A CNB2004800172040 A CN B2004800172040A CN 200480017204 A CN200480017204 A CN 200480017204A CN 100425399 C CN100425399 C CN 100425399C
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- active force
- securing member
- force
- deformation
- distance
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- Blinds (AREA)
Abstract
A spin-pull blind insert tool utilizes a control system that generates a stop signal based on the relationship between the force values and the motion values derived from the action of the tool mandrel. The improved control system utilizes the shape of the force-deformation curve and not just a given pre-set force value or pull distance. Hence, the control system of the present invention does not require any set-up for changes in panel thickness unless the mandrel is also changed to install a different thread size. This control system develops a force-deformation curve as the fastener is being installed. The stop signal is generated when a pre-set deformation point has been exceeded and the shape of the force curve can be characterized by either of two types. For either type, an algorithm is followed which establishes an optimum stopping point for the installation tool regardless of the panel thickness into which the blind rivet is being installed.
Description
Related application, the denomination of invention of submitting in the application and on April 30th, 2003 is correlated with for the 60/466th, No. 410 for the temporary patent application of " tool and method of hidden threaded insert is installed ", so the application requires the priority of this provisional application.
Technical field
The present invention relates to a kind of improved control method that is used to regulate the hand-operated tools operation, specifically, relate to relevant a kind of hand-operated tools control method that distortion is installed with the hidden threaded fastener of clamping plate under compression force that is used for.
Background technology
Hidden threaded fastener is internal thread or externally threaded securing member, and they can be installed into earlier and have in the hole that can only a side enters on the plate, thereby adopts this term of term " hidden ".The major part of these securing members comprises three essential parts: a head, a contractile thin-walled shank in centre and the threaded region in the end.As among Fig. 1,2,3,4 successively shown in, the part of this threaded portion and this shank at first is installed in this panel hole, adopts an instrument by being pulled on the threaded portion this shank to be applied compression stress then in supporting head part.This compression stress makes this shank distortion and distortion outwardly, produces the protuberance that is called as " spherical " thus on the thin slice side relative with this head.So this this threading tool spare that is used to compress shank is removed, and securing member is forever clipped on the plate, and is limited in a direction by head and is limited on the other direction by spherical protuberance.
Can be used for applying compression load at present can be with being divided into two primary categories to shrink instrument that shank was adopted: rotate-screw in and rotate-instrument of pulling out.Two types instrument all adopts an anvil block, is also referred to as nose-bridge frame, and a single mandrel is by wherein stretching out.Its function is to support the head of securing member when pushing insert to this anvil block when axle indentation or rotation.Rotation-screw-in instrument is applied to compression load on the shank to produce desired load by the axle that is threaded into securing member being applied enough moments of torsion.This rotation-screw-in instrument is cheap, in light weight, assembling and use simply thereby normally first-selected.Yet because the compression stress that they may provide is restricted, they can not be used to install the parts that have than heavy wall usually.Rotation-drawer type instrument makes the screw element of cooperation be screwed into suitable position, applies an axial pulling force by the withdrawal axle then.Axle is moved apart by it is rotated in the opposite direction then.This rotation-drawer type instrument is complicated thereby more expensive and than the Heavy Weight of rotation-screw-in instrument.They assemble up difficult and require more maintenance.Although these shortcomings are arranged, rotation-drawer type instrument is adoptable preferably selection for the big compression load of needs with the thick-walled parts that forms spherical protuberance.
Two types instrument all needs to adopt repetition test to carry out installation step consuming time and needs experienced operators.Rotation-screw-in instrument requires center roller length and stalling torque to regulate.Rotation-drawer type instrument requires to carry out the anvil block adjustment and to stroke or pull out the adjustment of pressure with respect to the position of stretching out fully of axle.The assembling of the instrument of above-mentioned any type all will consume a lot of times and need considerable operator's training.In order to improve their operation, two types instrument is given set a distance or is usually included control system for the power of sizing based on being installed to a given moment of torsion or being pulled out to one.In any situation, these boundaries need be determined in the process of assembling before instrument can be used.
Though rotate-pull out the instrument of type is the better selection that is used for thick-walled parts, and there are some problems in such instrument always.The stroke that the instrument of moving certain distance to must suitably be adjusted them to be installing an insert, and requires the skill of certain level and judgment so that the trip to be set.And in case adjust, the instrument of moving certain distance to can only be installed into insert a kind of grip thickness.Another problem is that the instrument of moving certain force to requires to be provided with power and is large enough to guarantee that all inserts can be mounted but are unlikely to excessive and damage any insert to exert all one's strength.For skill and the judgment that this power requires certain level suitably is set.And, adopt the hydraulic system of a sealing after a certain amount of hydraulic fluid leaks out this system, just can not reach total travel again.If be not found at once, it is not in place that this may cause insert to be installed.Even found at once, in the annex solution hydraulic fluid, will stop work.
Thus in the art with regard to needs provide a kind of be best suited for heavy wall use and can overcome the rotation of prior art-the pull out instrument of type shortcoming, be used to install the improved rotation of hidden threaded fastener-the pull out instrument of type.
Summary of the invention
In order to solve the aforementioned problems in the prior, designed the instrument that is used to install hidden spiral fastener.A kind of rotation-the instrument of pulling out that uses of combining with control system of the present invention adopts the rotation known-the pull out characteristics of type erecting tools, this class instrument has in response to a stop signal, at once stop the afterburning again means of instrument, yet the mode that stop signal is produced differs widely the present invention and prior art.A key concept of the present invention is such notion, and the necessary logicality of any spherical protuberance securing member of promptly suitable installation has only to use by a control system and just can finish.The present invention is based on force value and the relation between the movement value of axle action of deriving from produces a stop signal.This is to utilize the shape of active force-deformation curve and just the predetermined force value of a setting or the distance of pulling through improved control system.Therefore, control system of the present invention without any need for package assembly, unless axle has had change for different thread sizes is installed.
The present technique field all is familiar with, if with a kind of device that can produce the real-time chart of an active force-right-distortion a hidden threaded insert is installed, then those skilled in the art just can observe the shape of developing curve and determine suitable halt reliably.Control system of the present invention is based on the algorithm of the identical logicality that the technical staff adopted of this instrument of manual operation.A kind of force/deformation curves appears in control system of the present invention when securing member is mounted.When the tangent line on the force/deformation curves in this development becomes negative or stops to descend just generation of this stop signal when having surpassed a predetermined deformation point.Some instruments of prior art are equipped with the monitor to active force, distortion.This just make the acceptable scope of setting up a force value or deformation values or determine to be considered the representative suitable installation this active force-deformation curve on a zone become possibility.When so acceptable boundary value was established, the instrument of prior art just may provide a kind of information of mistake, illustrated at this boundary value of halt not to be satisfied and to provide difference.Yet for the instrument of prior art, this actual halt is determined by the moment of torsion that presets, stroke or the active force of instrument all the time.And the present invention general stops installation process according to the shape of active force-deformation curve all the time.The same with the prior art instrument, instrument of the present invention also can given acceptable boundary value and is provided this boundary value of error information declaration not to be satisfied and to provide the details of difference at halt.
When an error message is current, this unit that is affected is determined to be usually and may conform to and separated with further inspection.The present invention can provide a remarkable advantage when mistake or failure condition, have promptly that insert is assembled suitably and the unit does not need the big possibility of reprocessing.This is because control system of the present invention is according to curve shape rather than a given amount of force, therefore can adapt to the minor variations in grip thickness, insert size or insert mechanical properties.These change when may occur in a large amount of different insert of manufacturing or workpiece usually.
Control system of the present invention can provide following function:
1. termly near the slope of active force-deformation curve.
2. calculate force axis intercept termly to the tangent straight line of the point recently on active force-deformation curve.
3. determine a distortion adjustment point.
4. the approximate slope of determining this active force-deformation curve before this distortion adjustment is put whether by positive become negative.
Slope before point is adjusted in distortion by the positive maximum force that is observed before the distortion adjustment point that acquisition is being prescribed in those negative situations that becomes.
6. determine when and become negative after point has been exceeded or stop to reduce adjusting in distortion in the force axis intercept of the tangent straight line of the recent point on active force-deformation curve.
7. become negative or obtain the force value that is observed when stopping to reduce when this force intercept the tangent straight line of the recent point on active force-deformation curve.
8. when observing the active force of a regulation, produce stop signal.
9. obtain the maximum force and the maximum distortion that in a period of time process is installed, are observed
And they and a limited number range are compared and calculate their deviation.
Therefore, a main purpose of the present invention provides a kind of control system that is used for threaded blind insert erecting tools, and it includes the logical program of a spherical then protrude type securing member of suitable installation.Another object of the present invention provides a kind of hidden threaded fastener erecting tools, and it does not need the necessary installation step of instrument with prior art.Another purpose of the present invention is a kind of hidden threaded fastener erecting tools, and it can be installed into the multiple securing member with identical screw thread side multiple clamping size and need not to regulate or change control algolithm.A further object of the present invention provides a kind of a kind of control algolithm that is used for hidden threaded fastener erecting tools, wherein can detect on securing member or the variation of jam.Those skilled in the art that can be well understood to other purpose and advantage of the present invention from the description of following accompanying drawing and preferred embodiment.
Description of drawings
Fig. 1 is the front view that adopts the operating side of an instrument of the present invention, wherein shows the insert of being about to be mounted.
Fig. 2 is the front view that has this instrument that is positioned in the insert on the instrument of aiming at the plate with hole, and wherein plate is that form with profile illustrates, and this insert is about to be installed on this plate.
Fig. 3 is the front view that has been installed into the instrument that the insert in the plate is meshed with this.
Fig. 4 is the front view of the instrument that breaks away from from this insert after installation.
Fig. 5 is the curve map of active force with nine typical hidden threaded insert installation curves-right-distortion, and this curve has covered the scope of grip thickness.
Fig. 6 is the curve map of the active force-right-distortion of two typical hidden threaded insert installation curves; Wherein one is used for that another is the grip thickness that is used near maximum near minimum grip thickness.
Fig. 7 is the flow chart that is used for control tool and determines the algorithm of its halt.
The specific embodiment
Below operating sequence be preferred embodiment of the present invention operation general survey and suppose that tool head is installed on the end of a manipulator.An order of handing instrument that is used for by operator operation is essentially identical.In the preferred embodiment shown in Fig. 1 to 4, to be that the hand-operated tools with similar prior art is the same applied by a hydraulic jack this motive force, and should be understood that control system of the present invention can be applied at present on existing more such instruments.
Now please refer to Fig. 1, insert head rest supporting spare 5 adjustable grounds are attached on the cylinder body of hydraulic jack 1.One threaded mandrel 6 stretches out from supporting member.The order of the operation of this preferred embodiment is to be in by as shown in Figure 1 axle to stretch out state fully and begin.Insert 10 by a device (not shown) supporting is to be in correct radial position, but axially moves apart from axle.Desired first element is that axle is radially rotated the screw thread with engagement insert 10 on desired direction.This instrument axially moves and this axle becomes and the insert screw-threaded engagement thus simultaneously.Result's position display is in Fig. 2.Because the axle screw thread is existing and the insert threaded engagement, this insert moves with instrument when instrument moves.The action of the next one in order as shown in Figure 2, is towards the workpiece Move tool and securing member body 17 is inserted in the hole 18 on the workpiece 19.
Referring now to Fig. 3, after insert was completely enclosed the outer surface 21 of the tight contact workpiece of downside that makes head 20, the action of pulling began.The top of insert head 20 contact the end face 22 of this head rest supporting spare 23 and therefore the counterbored area 24 of insert 10 be compressed.This compression load is out of shape counterbored area outwardly and produces a spherical protrusion 25, and it is buckled in insert on the workpiece.In the art the sensing device of Shu Xiing in the pull operation process to measure active force and distance short blanking time.These measured values are transfused in the control device of having programmed using a control algolithm, and are as described below and shown in Fig. 5 to 7.Determine to have arrived halt when this control algolithm, a signal just sends immediately to stop to apply active force at once again.This control system then or keep screw element with respect to the position of head rest supporting spare or make this screw element turn back to complete extended position.
Next one action in the erection sequence is as shown in Figure 4, makes axle from being broken away from by mounted insert.This finishes in the following manner: simultaneously on desired direction the rotation threaded mandrel to break away from screw thread and to make instrument axially move apart the insert 10 that insert makes instrument break away from fully to be mounted thus.If also do not turn back to its complete extended position, then the instrument suitable axial distance of insert and the axle that will move apart this installation will be returned the position of stretching out fully, to finish erection sequence.
Fig. 5 is the curve map that contains the active force-right-distortion that is useful on 9 typical curves that hidden threaded insert is installed.From left to right, the insert of these curve TYPs is installed in the plate of thickening gradually.When this panel thickness increased, curve shape changed.Seven maximum points of showing a centre in these curves, active force reduces to be classified as thus A type curve subsequently.Two remaining curves do not have an intermediate maximum thereby are classified as the Type B curve.In the illustrated curve, curve 36 is maximum grip thickness type B curves and curve 35 is minimum grip thickness and type A curve.
Therefore, depend on the thickness of the plate that insert is installed into, observe two kinds of dissimilar force/deformation curves in the installation process.To the control algolithm key is as following mentioned identification in installation process or " type A " curve (being installed on the plate that approaches) or " type B " curve (being installed on the thicker plate).After arriving an initial distortion adjustment point distance, the commit point that is somebody's turn to do " type A " or " type B " occurs, and below is called as " offset distance ".This offset distance is selected to greater than the distance of maximum of points appearance place on minimum grip thickness curve 35 less than the distance of slope increase place on this maximum grip thickness curve 36.Determine that this offset distance requirement at first obtains the experiment historical records with the plate insertion of different-thickness, as shown in Figure 5.
Fig. 6 is a curve map of describing the active force-right-distortion contain two typical curves, and these two curves are to draw in the installation process that is used for usually corresponding to the hidden threaded insert of two kinds of very different grip thickness of the grip thickness curve of the minimum of Fig. 5 and maximum.Be used for having a relative maximum point 29, exceed this maximum point load and reduce spherical protuberance formation gradually at the curve of the insert that is mounted near minimum grip thickness 28.When spherical protuberance formation is finished (Fig. 3), there is a point 30, the tangible slope that has the inwall of the two halves up and down generation of the reaming that forms spherical protuberance by contacting with each other at that point increases.Be used for not having a relative maximum point, but have an obviously point 32 of distortion beginning of representative at another curve of an insert of installing near maximum grip thickness 37.For this curve, load continues to increase when this spherical protuberance forms.Just there is a point 33 when finishing when spherical protuberance forms, on this aspect, has the contact with each other obvious increase of the slope that produces of halves owing to spherical protuberance.
Now please refer to Fig. 6, line 35 is the recent point that are tangential on force deformation type B curve.After the type B curve had been determined, promptly when active force/deformation data did not write down a negative slope by offset distance 34, control system of the present invention was calculated this line termly.When minus force axis intercept of calculated tangent line record, will produce a stop signal at point 41.When this occurs in about 1,600 pound active force.Can notice that by the type B curve in Fig. 6 this is corresponding to a point on this curve that increases rapidly in the load beginning.
Also having another type A curve shown in Fig. 6, it is observed before to be the slope that regularly calculates of the quilt when curve be determined and to be in the arrival offset distance less than zero the time.This representative on curve corresponding to by peak value in the middle of of the intermediate force value of line 43 expression.Motive force proceeds to this load and reaches till the product value that this intermediate force multiply by the coefficient that generation finally stops power.Because test result has shown that this force 45 that fails should be slightly larger than the active force at middle peak value 29 places, is 1,080 pound active force approximately when this situation, so adopt a multiplier coefficients 1.1.
Now please refer to Fig. 7, a kind of control algolithm flow chart shows above-mentioned process.This algorithm has a branch point 37 fixed according to two kinds of above-mentioned curve types.As previously mentioned, curve type be according to the tangent slope that is tangential on a recent point on the curve before distance surpasses default offset distance value whether from determining on the occasion of changing to negative value.If then curve is confirmed as type A and the right side branch 38 of the program that follows logic.If not from one on the occasion of changing to a negative value, then curve is confirmed as the type B curve and the left branch 39 of the program that follows logic to slope before distance surpasses default offset distance.These two logic branches point 40 in the back converge, and it is just identical and only require to monitor active force to exceed this logical program.When reaching this stop signal during by calculated value, active force produced.
The key concept that algorithm of the present invention comprised is to producing the importance of mechanical load system with the force axis intercept on the active force deformation curve figure.For a fixed system of giving that loads to generation, this force intercept will never become negative.Yet if after there is certain distortion in first system, one second system is parallel to this first system setting, be used for the new mechanical system that is combined curve a new starting point will be arranged, it is born with respect to the starting point of first system.When forming the spherical protuberance of a hidden threaded fastener, second inwall of going up of this reaming contacts with each other when this process end.This contact is similar to one second system that introduced.For this reason, become that two halves that negative force axis intercept can be used as this spherical protuberance are run into reliable indication together and therefore be the reliably indication that spherical protuberance is finished fully.Above-mentioned preferred embodiment is equally applicable on a handheld tool or the automation Move tool.Other embodiment also is fine and also falls within the scope of the invention, specifically, is other the specific embodiment at the different modes that stretches out drive spindle between state and the halt fully.The embodiment of a prediction in addition measures on the axle or the tensile force on any other part that is connected with it, rather than measures the compression stress on head rest supporting spare as above-mentioned embodiment.
Can understand easily from the description of preferred embodiment that purpose of the present invention can be realized by this preferred embodiment.Instrument with prior art does not need for purposes of the invention to the necessary installation step of different panel thickness.This control algolithm is installed to best point concerning the jam of actual fastener and the sort of specific installation with each securing member.Therefore, this instrument can be fit into multiple clamping with multiple securing member with identical thread size and need not to regulate or change this control algolithm.In addition, can be detected by location in the variation aspect securing member or the grip conditions with respect to the best halt of the presumptive area on active force-deformation curve.
For those skilled in the art from the explanation of aforesaid preferred embodiment obviously objects and advantages of the present invention be implemented.Yet because of being appreciated that that other also can be arranged is all to modification of the present invention and variation, these modification and variation are conspicuous from aforesaid explanation concerning those skilled in the art that, yet the present invention should only be limited by following claim and their legal equivalents.
Claims (4)
1. an operation is used for deformable securing member is installed into the method for an instrument of a plate, may further comprise the steps:
A deformable securing member is inserted a plate by a hole;
This deformable securing member is applied a compression stress so that this securing member is out of shape and is fastened on this plate;
Measure the value of the active force that is applied and the distance of the distortion of the securing member when described active force is applied in;
Active force-deformation curve when drawing active force value and deformation distance graph of a relation and applying active force with generation;
Measure the tangent slope of the recent point of this active force-deformation curve termly;
When negative from just changing to the tangent slope of recent point of determining this active force-deformation curve is;
Termly the deformation distance and a distortion of this securing member are adjusted point apart from comparing, described distortion adjustment point distance is selected to the deformation distance of the securing member that occurs greater than a maximum of points on minimum grip thickness active force-deformation curve, and less than the deformation distance of the securing member of tangent slope increase place of on maximum grip thickness active force-deformation curve, putting;
After the deformation distance of securing member arrives an initial adjustment point distance, before adjusting point, distortion obtains an intermediate force value from just changing to the maximum force that is measured to when bearing by the tangent slope that is recorded in this recent point;
Described intermediate force value be multiply by a coefficient to obtain the power that fails; And, this active force that is applied in stops the active force that this is applied in when this fails power when reaching.
2. an operation is used for the securing member of changeable type is installed into the method for an instrument of a plate, may further comprise the steps:
A deformable securing member is inserted a plate by a hole;
This deformable securing member is applied a compression stress so that this securing member is out of shape and is fastened on this plate;
Measure the value of the active force that is applied and the distance of the distortion of the securing member when described active force is applied in;
Active force-deformation curve when drawing active force value and deformation distance graph of a relation and applying active force with generation;
Measure the tangent slope of the recent point of this active force-deformation curve termly;
When negative from just changing to the tangent slope of recent point of determining this active force-deformation curve is;
Termly the deformation distance and a distortion of this securing member are adjusted point apart from comparing, described distortion adjustment point distance is selected to the deformation distance of the securing member that occurs greater than a maximum of points on minimum grip thickness active force-deformation curve, and less than the deformation distance of the securing member of tangent slope increase place of on maximum grip thickness active force-deformation curve, putting;
After the deformation distance of securing member arrives an initial adjustment point distance, obtain an intermediate force value and write down this active force less than zero the time and when surpassing this distortion adjustment when this intermediate force axis intercept by calculating the force axis intercept that is tangential at the straight line of the recent point on active force-deformation curve termly;
Described intermediate force value be multiply by a coefficient to obtain the power that fails; And, the active force that is applied in stops the active force that this is applied in when this fails power when reaching.
3. method as claimed in claim 1 or 2 is characterized in that, described securing member is to be fit to install the securing member of spherical protuberance then.
4. method as claimed in claim 1 or 2, it is characterized in that the step that applies a compression stress comprises and screws in an axle in the hole of described securing member and apply a motive force so that the head of described securing member is carried the head support device of the instrument of this axle by pushing and pressing.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US46641003P | 2003-04-30 | 2003-04-30 | |
| US60/466,410 | 2003-04-30 | ||
| US10/820,775 US6851167B2 (en) | 2003-04-30 | 2004-04-09 | Method for installing blind threaded inserts |
| US10/820,775 | 2004-04-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1809443A CN1809443A (en) | 2006-07-26 |
| CN100425399C true CN100425399C (en) | 2008-10-15 |
Family
ID=36840912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800172040A Expired - Fee Related CN100425399C (en) | 2003-04-30 | 2004-04-12 | Method for installing blind threaded inserts |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100425399C (en) |
| TW (1) | TWI259792B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106541068A (en) * | 2015-09-21 | 2017-03-29 | Vvg彼菲斯蒂冈斯技术两合有限公司 | It is configured to the method and clincher tool of the mandrel of the clincher tool of blind rivet element |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4233721A (en) * | 1979-04-19 | 1980-11-18 | Rockwell International Corporation | Tension control of fasteners |
| CN2132864Y (en) * | 1992-06-20 | 1993-05-12 | 周魁刚 | Self-riveting nut |
| US5526669A (en) * | 1994-05-20 | 1996-06-18 | Hi-Shear Corporation | Computer controlled pull gun system |
| US5813110A (en) * | 1996-02-09 | 1998-09-29 | The Boeing Company | Low-voltage eletromagnetic riveter |
| CN2293500Y (en) * | 1997-02-20 | 1998-10-07 | 林硕能 | Elastic-plastic grasping device of located thermosbottle frame |
| US5956251A (en) * | 1995-06-28 | 1999-09-21 | The Boeing Company | Statistical tolerancing |
| CN2541654Y (en) * | 2002-05-27 | 2003-03-26 | 弼鼎贸易有限公司 | Improved structure of pull nail |
-
2004
- 2004-04-12 CN CNB2004800172040A patent/CN100425399C/en not_active Expired - Fee Related
- 2004-04-26 TW TW93111592A patent/TWI259792B/en not_active IP Right Cessation
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4233721A (en) * | 1979-04-19 | 1980-11-18 | Rockwell International Corporation | Tension control of fasteners |
| CN2132864Y (en) * | 1992-06-20 | 1993-05-12 | 周魁刚 | Self-riveting nut |
| US5526669A (en) * | 1994-05-20 | 1996-06-18 | Hi-Shear Corporation | Computer controlled pull gun system |
| US5956251A (en) * | 1995-06-28 | 1999-09-21 | The Boeing Company | Statistical tolerancing |
| US5813110A (en) * | 1996-02-09 | 1998-09-29 | The Boeing Company | Low-voltage eletromagnetic riveter |
| CN2293500Y (en) * | 1997-02-20 | 1998-10-07 | 林硕能 | Elastic-plastic grasping device of located thermosbottle frame |
| CN2541654Y (en) * | 2002-05-27 | 2003-03-26 | 弼鼎贸易有限公司 | Improved structure of pull nail |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106541068A (en) * | 2015-09-21 | 2017-03-29 | Vvg彼菲斯蒂冈斯技术两合有限公司 | It is configured to the method and clincher tool of the mandrel of the clincher tool of blind rivet element |
| US10252322B2 (en) | 2015-09-21 | 2019-04-09 | Vvg-Befestigungstechnik Gmbh & Co. | Method for configuring a mandrel of a riveting tool for blind rivet elements and riveting tool |
| CN106541068B (en) * | 2015-09-21 | 2019-10-29 | Vvg彼菲斯蒂冈斯技术两合有限公司 | It is configured to the method and clincher tool of the mandrel of the clincher tool of blind rivet element |
Also Published As
| Publication number | Publication date |
|---|---|
| TW200505622A (en) | 2005-02-16 |
| CN1809443A (en) | 2006-07-26 |
| TWI259792B (en) | 2006-08-11 |
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