CN201154388Y - Rivet installation tool with rivet monitoring circuit - Google Patents

Rivet installation tool with rivet monitoring circuit Download PDF

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Publication number
CN201154388Y
CN201154388Y CN 200590000056 CN200590000056U CN201154388Y CN 201154388 Y CN201154388 Y CN 201154388Y CN 200590000056 CN200590000056 CN 200590000056 CN 200590000056 U CN200590000056 U CN 200590000056U CN 201154388 Y CN201154388 Y CN 201154388Y
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China
Prior art keywords
rivet
setting tool
rivet setting
main body
supervisory circuit
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CN 200590000056
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Chinese (zh)
Inventor
埃马尔·J·奇蒂
布赖恩·M·泰勒
彼得·C·托马斯
丹尼尔·P·维廖蒂
杰弗里·威克斯
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NEUPHIRY CO Ltd
Newfrey LLC
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NEUPHIRY CO Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/28—Control devices specially adapted to riveting machines not restricted to one of the preceding subgroups
    • B21J15/285—Control devices specially adapted to riveting machines not restricted to one of the preceding subgroups for controlling the rivet upset cycle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/02—Riveting procedures
    • B21J15/04—Riveting hollow rivets mechanically
    • B21J15/043—Riveting hollow rivets mechanically by pulling a mandrel

Abstract

The utility model provides a rivet mounting tool with a rivet monitoring circuit; the rivet mounting tool comprises a strain sensor which is connected with the outer surface of the body part of the tool; the strain sensor is arranged near a piston; the strain sensor detects the strain of the body part in the mounting event of the rivet; the rivet mounting tool also comprises a monitoring circuit which is coupled to the strain sensor. The rivet mounting tool can detect the inaccurate mounting of the rivet.

Description

Rivet setting tool with rivet supervisory circuit
The cross reference of related application
The present patent application requires the rights and interests of following U.S. Provisional Application, these U.S. Provisional Applications are 60/587 for the sequence number that proposes on July 14th, 2004,971 application, the sequence number that proposes on September 24th, 2004 is 60/612,772 application, the sequence number that proposes on March 24th, 2004 is 60/555,989 application, the sequence number that proposes on May 3rd, 2004 is 60/567,576 application, the sequence number that proposes on November 5th, 2004 are 60/625,715 application, with the sequence number that proposes on July 19th, 2004 be 60/589,149 application.The content that above-mentioned these applications disclose is included in this through quoting.
Technical field
The present invention relates to a kind of automatic, semi-automatic and manual rivet setting tool that is applicable to, it determines the situation accepted that rivet is installed by adopting microstrain or pressure sensor technology.
Background technology
Mechanical component often uses securing member (being typically tubular rivet) that the mode of one or more parts with permanent structure is fixed together.When operating personnel can't see the blind side of workpiece, such as using rivet that tubular rivet fixedly the time, is preferentially selected by accessory and a hollow box body portion.Also preferred tubular rivet when producing a large amount of assembly is because with respect to screw thread or screwed joint, it can obtain to improve the advantage of assembling speed and productivity.
The defective that tubular rivet is installed in hollow box body portion is, whether blind side installation end that can not visual inspection rivet correctly finishes connection.When adopting the size variation of a large amount of tubular rivets and their diameter and length, all the more so.When assembler does not have experience or rivet arrangement complexity, also this situation can appear.And do not have that correct rivet to be installed or perhaps rivet is not installed at all also be possible.Check assembly not only the expense costliness but also the effect of not having after finishing, in fact can not discern in the specific hole whether adopted suitable rivet in some cases.Another Consideration is to have adopted increasing rivet automatically to place and erecting tools in the modern assembling factory that does not have operating personnel.
The riveted joint monitoring is confined to two kinds of methods in the existing installation process.First method is to adopt hydrostatic sensor, is used for the pressure of survey tool working fluid.This existing method is confined to only be used for test fluid pressure.Second method is to adopt linear arrangement in the load cell of tool housing.This select employed equipment size quite big therefore its application is limited on the spot.In addition, second method typically adopts LVDT to detect the displacement of different moving-members.
Summary of the invention
The purpose of this utility model is to provide a kind of rivet setting tool with rivet supervisory circuit, and it can be surveyed problematic rivet and install.According to the present invention, a kind of rivet setting tool that is suitable for solving this technical problem is provided, this rivet setting tool has monitoring system, it continues to monitor the rivet number of installation process, installation and the correctness of installation, and whether identification rivet body length or applied thickness exist little but unacceptable deviation.And because the quickening of assembling speed, its adopts the complex analyses of rivet installation curve, has almost at once rather than the advantage of unacceptable installation is discerned in long relatively delay.It can monitor other securing member such as tubular rivet nut (POP
Figure Y20059000005600091
Nut), the self-drilling self-tapping screw, perhaps or even professional securing member such as POP
Figure Y20059000005600092
Bolt, but for purpose of the present invention, tubular rivet will be used as the typical fasteners that this monitoring system is used.
In order to overcome the defective of prior art, a kind of rivet monitoring system is provided, this system has the microstrain sensor, the strain in these sensor testing tool parts.These strains that detect are carried out comparison with a plurality of different tolerance limit bands, and these tolerance limit bands are formed near middle strain or the pressure-time curve.Whether several different methods is provided, and the contrast tolerance limit is brought the data of analysis to measure, can accept to determine that a specific rivet is installed.
One side of the present utility model is to provide a kind of rivet setting tool with rivet supervisory circuit, the situation accepted that it is used to that tubular rivet is installed and assesses described installation, described rivet is the type with axle of a frangible tubular body and extension, this axle comprises the bar portion of the described frangible tubular body of the head of an expansion and passing through of extending back from the head, described riveted joint erecting tools comprises: the hydraulically operated blindrivet installation tool, described blindrivet installation tool comprises cast main body, be used to engage the riveted joint assembly and the piston component of motion vertically of the described bar portion of described axle, this piston component is connected with described riveted joint assembly operation ground, drives described axle in response to the compression hydraulic fluid that applies on the described piston component; First sensor, it is coupled to described cast main body and is arranged on around the piston, and hydraulic fluid affacts the pressure of described piston component in the monitoring rivet installation process, and produces relevant therewith output pressure signal; Control circuit, described control circuit has analysis circuit and display circuit, and described analysis circuit is coupled to described first sensor.
One side of the present utility model is to provide a kind of rivet setting tool with rivet supervisory circuit, described rivet setting tool comprises: the strain transducer that links to each other with the outer surface of tool body part, described strain transducer is positioned near the piston, and described strain transducer detects the strain of main part in the rivet Installation Events; Observation circuit, it is coupled to strain transducer.
One side of the present utility model is to provide a kind of rivet setting tool with rivet supervisory circuit, comprising: main body; The fore-end that has adapter and front end shell, this adapter links to each other with main body at the first predetermined torque place, and this front end shell links to each other at the second moment of torsion place with adapter; Attachment, it is provided for rivet is connected to a member; The sensor that links to each other with described main body; Described sensor detects when rivet setting tool activated from front end shell and is delivered to the strain that the active force of main body causes by described adapter in main body, and the signal of this reception and second moment of torsion have nothing to do.
One side of the present utility model is to provide a kind of rivet setting tool with rivet supervisory circuit, and described rivet setting tool comprises: main body, first chamber that this main part limitation is segmented by activatable piston; The attachment that link to each other with described activatable piston; The front end shell that links to each other with described main body; The strain transducer that links to each other with described front end shell; Observation circuit, it is coupled to described sensor.
One side of the present utility model is to provide a kind of rivet setting tool with rivet supervisory circuit, comprising: first parts, and these first parts apply active force to rivet; Second parts, these second parts apply reaction force to rivet; And sensor, these sensors coupled to the second parts, the strain in described second parts that the moment that measurement is formed by reaction force produces.
One side of the present utility model is to provide a kind of rivet setting tool with rivet supervisory circuit, comprising: first parts, these first parts apply active force on along axis toward rivet; Second parts, the active force of this second unit response on rivet applies reaction force, and described second parts are connected to described first parts removedly; And sensor, the characteristic in the 3rd parts that this sensor measurement is caused by reaction force.
One side of the present utility model is to provide a kind of rivet setting tool with rivet supervisory circuit, described rivet has the axle of a frangible tubular body and extension, this axle comprises the bar portion of the described frangible tubular body of the head of an expansion and passing through of extending back from the head, this rivet setting tool comprises: the hydraulically operated blindrivet installation tool, described instrument comprises the riveted joint assembly of the described bar portion that engages described axle, Yun Dong piston component and ring-type are around the housing of described piston vertically, this piston component operatively is connected with described conjugative component, and response applies the compression hydraulic fluid and drives described axle on described piston component; First sensor, the strain in the monitoring rivet installation process middle shell, and produce relevant therewith strain output signal; Second sensor, surveying work fluid affact the hydraulic pressure supply pressure of hydraulically operated blindrivet installation tool; Control circuit, described control circuit are coupled to described first and second sensors.
One side of the present utility model is to provide a kind of rivet setting tool with rivet supervisory circuit, this rivet setting tool comprises: the hydraulically operated rivet setting tool, described instrument comprises main body, the piston component that engages the riveted joint assembly of described rivet and move vertically, this piston component is connected with described riveted joint assembly operation, and response applies the compression hydraulic fluid and drives described rivet on described piston component; First sensor, hydraulic fluid is applied to one of them of pressure, strain or active force on the described piston component in this first sensor monitoring rivet installation process, and produces the first relevant therewith output signal; Second sensor, hydraulic fluid imposes on the supply pressure of hydraulically operated rivet setting tool in this second sensor monitoring rivet installation process, and produces the second relevant therewith output pressure signal; Control circuit, described control circuit are coupled to described first and second sensors.
One side of the present utility model is to provide a kind of rivet setting tool with rivet supervisory circuit, and described instrument comprises: reverse mounted component, thus it applies reaction force installation rivet to rivet; Front end shell is held at least one described parts; Be used to produce the instrument of reaction force; Member is used for connecting and transmitting each reaction force, this reaction force from described active force production part to one of them described parts; Connected system is used to connect described front end shell and described connecting elements; Sensor links to each other with described connecting elements, is used for detecting the variation of the physical parameter of described connecting elements when rivet applied active force; Described sensor is installed to the position of described connecting elements and the variation of connected system has nothing to do, and not influenced by it.
One side of the present utility model is to provide a kind of rivet setting tool with rivet supervisory circuit, and described instrument comprises: first parts, and these first parts apply active force on rivet; Second parts, these second parts are connected to described first parts removedly, and apply reaction force on rivet; And sensor, it is coupled to described second parts, and the strain that produces of the moment that formed by described reaction force of this sensor measurement.
The beneficial effects of the utility model are: this rivet setting tool can be surveyed installing incorrectly of rivet.According to following explanation and after claim in conjunction with the accompanying drawings, other advantage and feature of the present invention can become more obvious.
Description of drawings
From detailed specification and accompanying drawing, can more fully understand the present invention, wherein:
Fig. 1 a and 1b show the cutaway view that the present invention instructs described rivet setting tool;
Fig. 2 a and 2b show the cutaway view that the present invention instructs the rivet setting tool of described replacement;
Fig. 3 shows the cutaway view of the rivet setting tool with pressure sensor of the present invention's instruction;
Fig. 4 a～4c shows in the installation process of rivet the typical strain-time graph by the sensor measurement shown in Fig. 1 and 2;
Fig. 5 shows many curves, and described curve is used to average or sample strain-time graph that the system that sets up uses;
Fig. 6 a and 6b show and are distributed in sample curve shown in Figure 5 tolerance limit passage on every side;
Fig. 7 shows the sample curve that has a pair of tolerance limit square frame shown in Figure 5, and this tolerance limit square frame distributes along the curve ad-hoc location;
Fig. 8 shows a kind of method, and this method has adopted the variance analysis of the rivet installation of comparing with a new rivet installation curve;
Fig. 9 shows the tolerance limit passage that has the tolerance limit square frame, and it is used for comparison curves;
Figure 10 shows and adopts 10% sample curve of ending;
Figure 11 instructs described point and tolerance limit block system according to the present invention;
Figure 12 shows the quality testing that one group of rivet is installed;
Figure 13 a shows the front view of strain transducer among Fig. 1 a-2b;
Figure 13 b shows the pressure sensor shown in Fig. 3.
The specific embodiment
Following description of a preferred embodiment is in fact just exemplary as an example, is used for limiting the present invention, its application and purposes anything but.This system is configured to determine the quality of mounting process and installation results.This system utilizes the rivet erection unit, and this rivet erection unit has first parts, and these parts are configured to apply on securing member installs active force so that securing member to be installed.Be provided with connecting elements, this connecting elements is configured to respond the installation active force and applies reaction force on securing member.Has sensor on the connecting elements, to be used for responding to the variation of the physical parameter that causes by reaction force in the described connecting elements.
First parts apply installation active force vertically on first side of securing member, and second parts resist this installation active force, these second parts apply one substantially with the parallel reaction force of active force is installed.This reaction force is to be produced by the strain of connecting elements.
Sensor is configured to measure the strain of following position, and described position is in the radial distance of being scheduled to apart from above-mentioned axis.As described below, sensor is positioned at a certain position on connecting elements or the supporting member, and this position is responded to the strain that is brought by the moment of described reaction force generation easily.Because the position of sensor, so sensor can be calibrated the variation that is used to indicate physical parameter, these variations can show with comparing data.In addition, because the position of sensor so after the maintenance of routine, for example change after punch die or the punch member, need not calibrating sensors.
According to instruction of the present invention, accompanying drawing 1a and 1b illustrate rivet setting tool 30 and have a rivet installation quality detection system 32, preferentially are used to the tubular rivet with trailer system.Rivet setting tool 30 has housing 31, axle haulage gear 32 and microstrain sensor 33.Sensor 33 links to each other with the surface of rivet setting tool.Sensor 33 is arranged for measuring the microstrain in the parts of rivet setting tool 30 in the rivet Installation Events.Rivet setting tool also is provided with an observation circuit, and it is set for and receives a large amount of training output signals that come from sensor 33.This circuit will be trained the output signal combination, thereby form a row typical data, and define the tolerance limit band about typical data.These tolerance limit bands can be relevant with at least one data point on typical data is arranged, and in time or range of strain.
The front end of this instrument has axle haulage gear 42, and it has comprised front tab 44, front end shell 46 and drawing head adapter 48 usually.Drawing head adapter 48 links to each other with movably traction piston 53 in body shell 54.Body shell 54 defines one and is generally heavy wall casting cylinder 56, and it has surrounded the piston 53 of axle haulage gear 42 annularly.The housing 54 that the longitudinal axis 57 limits has an outer surface 58, inner surface 60 and handle portion 62.Housing body 54 has a surface that specific sensor installation site 64 is arranged, and described sensor installation site preferably casts any position of the outer surface 58 of cylinder 56 along heavy wall.In this, can imagine of top or the side setting of sensor installation site along axle clincher tool 30.Sensor installation site 64 is the inner surface of a machined on the cast housing wall or the qualification groove of outer surface.Alternatively, the metal thickness between inner surface and the outer surface can be a limit value.The microstrain sensor 33 that below will describe preferably is parallel to the longitudinal axis 57 of housing 54 and is provided with, and is set for the physical characteristic that detects main body in the rivet Installation Events.Especially, sensor 33 is set for the detection securing member strain that the moment of formation produces at housing is installed.
The cylinder 56 of the extension of body shell 54 has comprised a hole that is limited to its front end, and the axle haulage gear 43 that is connected to mobile piston 53 is by this hole.Housing 56 inside are moved piston 53 and are subdivided into cup 66 and chamber 68, back.Preferably shown in Fig. 1 b, threaded connector 74 is connected with cast main body 54 with front end shell 46.In this, front end shell 46 engages with body shell 54, touches retaining ring 76 up to front end shell.A handle countersunk or ring chamber 77 are arranged near retaining ring 76.Countersunk 77 can select to be arranged near the sensor installation site 64 or below.The part of cast main body 54 between outer surface 58 and countersunk 77 has the cross-sectional layers of a relative thin, and this thin cross-sectional layers will have the strain of enhancing, and this strain is caused by the active force that threaded connector 74 produces.
Clamp assemblies has comprised that one group places the axle jaw (not shown) in the clamp case 46, links to each other with drawing head adapter 48.In the fitting operation, jaw engages and catches the elongated shaft of tubular rivet 49 axles.
When the rivet installation period began, air-flow entered the cylinder (not shown) of erecting tools, thereby then hydraulic oil is compressed and is pressed into the cup 66 that hole 34 enters housing 54.Because piston links to each other with axle drawing head adapter 48, thereby link to each other with axle haulage gear 42, when hydraulic oil continues to be pressed into cup, brake piston 53 is applied active force it is moved backward, also spur the axle clamp and move backward, fix rivet with the rivet mandrel 50 that links to each other.Hydraulic oil under pressure in chamber 66 injection not only driven power piston 53, and the body shell 54 of rivet setting tool has also been applied the internal pressure that equates.Internal pressure changes described in the rivet installation process, thereby causes the size in the housing 54 that different and small variation are arranged, and therefore produces different strains.
Sensor 33 detects the elasticity microstrain of the different size in these housings 54.Come from collection during the strain data of load measurement equipment, these data are handled based on the controller 70 of programmable microprocessor by one, described controller adopts the relatively change of deformeter of software program, thereby calculates when clamp is mobile between the rivet installation period pressure, strain or stress with respect to the variation of time and distance.Described sensor 33 can be piezoelectric transducer or traditional single or multiple resistance strain gauge equipment.Each rivet all repeats above process, thereby the historical record that can prepare to install and itself and the scope of desired value in the memory cell of setting up and be stored in processor 70 before compared.
Fig. 2 a and 2b show the rivet setting tool 30 ' of a replacement of the present invention's instruction.Rivet setting tool 30 ' adopts one to change front end shell 80 fast, and it allows to check fast that clamp assemblies is to carry out General Maintenance.Described quick replacing front end shell 80 links to each other with the adapter 82 that adopts front end shell nut 84.Adapter 82 links to each other with the threaded connector 85 that cast main body 54 forms.In this, adapter 82 screws in cast main body 54 and touches retaining ring 76 up to it.Preferably shown in Fig. 2 b, handle countersunk 77 is provided with and is adjacent to retaining ring 76.Countersunk 77 selectively be arranged near the sensor installation site 64 or below.Countersunk 77 is used to support sealing shroud 86 and retaining ring 76.Cast main body 54 defines a position between outer surface 58 and countersunk 77, this position has the strain of enhancing, and this strain causes by the stress that threaded connector 74 produces.
Multiple source makes and produces stress in the cast housing.Being anchored on cast main body 54, the first stress S1 by adapter 82 results from the cast main body 54.The second stress S2 is in the rivet fitting operation, and the active force of front end shell 80 affacts adapter 82, then enters by the threaded portion transmission to produce in the cast main body 54.Tertiary stress S3 is that the active force of front end shell 80 between the rivet installation period affacts adapter 82, then by supporting ring 76, passes that handle countersunk 77 is delivered to cast main body 54 and produces.The 4th stress S4 is transferred to cast main body when head traction adapter 82 bump retaining rings 76.
The reaction of axle erecting device 42 causes entering the cast main body 54 that is threaded from the active force of front end shell 80.The active force from front end shell 80 that is transmitted causes the micro-elasticity compression of heavy wall casting cylinder, has caused the interior strain of cylinder wall of cast main body 54.In addition, caused the fluctuation of heavy wall casting cylinder inner periphery strain from the air pressure of the piston of axle haulage gear 42 and the increase in the cylindrical structure.Usually, the combination of these strains can be explained with polynary tensor stress and strain territory.Because the housing 54 of riveting gun is the foundry goods with different-thickness and material behavior, and it is a variable that rivet is installed with regard to active force that applies and time, therefore the rivet that is just undertaken by the active force that applies is installed, and it is infeasible obtaining the change of deformeter resistance measurement value and the accurate dependency relation between the cast main body 54 interior strain and stresses of being correlated with.The mode that links to each other of front end shell and main body makes this problem more complicated, because threaded connector causes the various stress and strains changes that can not estimate in the system.Even so, system 32 described above has adopted the various methods that overcome these results, thereby with these be originally interfering and normally at random signal minimize, and utilize the signal analysis rivet Installation Events of continuous sensor, thereby the demonstration of rivet installation quality be provided.
With reference to figure 2a and 2b, front end shell 80 has covered clamp guidance set 81, and this clamp guidance set links to each other with piston 44 by drawing head adapter 46.Front end shell 18 has also comprised front tab 80, and front tab is fixedly connected on housing, and holds the axle of rivet (not shown).Front end shell nut 34 slidably is arranged on the drawing head adapter 82, and is biased in first direction by spring 188.Spring 188 is between clamp guiding collar 186 and flange 190, and this flange is arranged on the drawing head adapter 192.Support the clamp guide 198 of a plurality of clamp (not shown) to use front end shell nuts 84 to be threaded or frictionally engage in drawing head adapter 46.
Because this screw threaded arrangement can prevent that fragment from entering the screw thread place of clamp guide 198 and drawing head adapter 198.Thereby the quick connection performance of permission clamp guide is kept by clamp guide 198 is easily broken away from from drawing head adapter 46.
Has a ratchet engagement face between clamp guide ring 186 and the clamp guide 198, it is interacted by tooth 202 and tooth 204 and produces, for clamp guide 198 is broken away from drawing head adapters 46, thereby clamp guide ring 186 must overcome that the biasing force of spring 188 breaks away from and the engaging of clamp guide 198.Tooth 192 has an inclined surface, when clamp guide 198 is fixed on the drawing head adapter 46, tooth 202 is contracted go up inclined surface, thereby push down clamp guiding collar 186 to overcome the elastic force of spring 188.When clamp guide 198 was fastened on the drawing head adapter 46, clamp guide 198 and clamp guiding collar 186 formed a ratchet engagement face.Like this, for the rivet that is applicable to various dissimilar and/or sizes or for common cleaning and maintenance, can clamp guide 198 be separated apace and replace by pulling back clamp guiding collar 186 and turning on clamp guide 198.
Below will describe the assembly of front end shell 80 and the clamp guidance set 81 of housing 16 in detail.Clamp guidance set 81 is threadedly connected to the cylindric extension of piston 53.Front end shell 80 is slided on clamp guidance set 81, and surrounds clamp guidance set 81.
Contain front end shell nut 84, this front end shell nut can slide on the outer surface of front end shell 80, so that front end shell 80 keeps in position.Front end shell nut 84 can comprise internal thread part 224, and a grasping surface 226 that is provided with around outer surface is arranged, and described internal thread part 224 engages with the external thread part 220 of recess 216.Utilize grasping surface 226, operating personnel can be threadedly connected to front end shell nut 84 on the housing 16, therefore keep front end shell 80 to be anchored on suitable position.
The quantity that observation circuit 70 is arranged for receiving sensor has the training output signal of statistical significance, and this training output signal comes from the securing member that quantity has statistical significance and installs.Output signals are trained in these observation circuit 70 alignment then, thereby it is right to form one group of output/time predetermined value.Then controller utilizes the training output signal of these alignment, to form one group of sample output-time signal.Observation circuit 70 typically averages the training output signal, thereby it is right to form output/time predetermined value.Observation circuit 70 forms at least about a right tolerance limit band of part output/time value then.
Observation circuit 70 also is provided for receiving the strain output signal that comes from sensor measurement in the rivet installation process.This strain signal and the output/time value of at first aliging is right.By to the predetermined strain of a homogeneous measuring-signal and the most close strain of sample group output/time signal, with this signal alignment.In addition, search measurement strain-time data is determined last local maximum strain value.This last local maximum strain value can align with the last local maximum strain value of this sample output/time signal group.Whether as described below, many analytical methods can be used to this align data, suitable to determine specific rivet installation.Observation circuit 70 is delivered to signal on the indicator then, and this indicator operatively is connected with observation circuit 70, and based on to this strain output valve right/predetermined value right relatively inform the situation accepted that operating personnel install by signal.
With regard to the system shown in Fig. 2 a and the 2b, traction component 81 is set for along the longitudinal axis of instrument active force is imposed on securing member.The reaction force that second parts or front end shell are set to the active force that will apply corresponding to first parts is applied on the securing member.Described sensor is set up in order to detect the strain that the moment that produced by reaction force causes in main body.In this, sensor 33 is set for and detects the strain that departs from the reaction mechanical axis in the main body.Sensor 33 selectively is set for the strain that detects the M.E path of departing from one or more parts, and described one or more parts apply reaction force to securing member.
Can see that front end shell nut 84 links to each other front end shell with adapter.When the adapter pretwist relays into main body, sensor 33 is placed and is set for to detect in the main body by front end shell transfers to the strain that the active force of converter causes, it is irrelevant with the size that acts on the moment of torsion on the front end shell nut 84.
Fig. 3 shows the side view of instructing the rivet setting tool of described adopts pressure sensor according to the present invention.The rivet setting tool 30 that adopts among this embodiment " be similar to the rivet setting tool among Fig. 2, but instrument 30 " adopted a quick-replaceable front end shell 80, it allows to check fast clamp assemblies, realizes General Maintenance.Erecting tools 30 " comprised that a micro pressure sensor 33 ' of being located at usually under venting/solid screw 35, this sensor are set for the hydraulic pressure in the testing tool.
As previously mentioned, the stress that is produced by the compression of different assemblies is introduced in cast housing, by threaded portion, is transferred in the cast main body 54 and (sees Figure 26) successively.These transmission have caused the hydraulic fluid compression, the microstrain of sample before the hydraulic fluid compression has reflected exactly.Reaction force from the axle erecting device active force of front end shell 80 compresses hydraulic fluid in cast main body 54.Described system 32 adopts the diverse ways analysis to be the strain and the pressure signal of randomness usually, thereby the indication of rivet installation quality is provided.
In addition, system can take many different analytical methods to the data that provide.System has worked out a standard to every kind of rivet distribution has been installed, and has " self study " ability that parameter is set for the installation of monitoring rivet.This system can also keep the historical record of installation and be set up as single or organize the comparator of rivet more.
The parts of the monitoring sensor 33 among Fig. 3 are load checkout equipments 230, and this equipment is such as being mounted pressure sensor, load cell or piezoelectric strain instrument, and described equipment is arranged to the slight change that detects hydraulic pressure.The load checkout equipment can be installed in instrument itself, or, if instrument has a remote amplifier or hydraulic loaded source (not shown), be contained on the hydraulic loaded line.In this case, the sensor load is converted into the signal of telecommunication, and it is supplied with the integrator of the analysis package that links to each other with computer processor system.
Observation circuit 70 is set for definition tolerance limit band, and this tolerance limit band is the right function of output predetermined value.In this, the tolerance limit band can be the function of time or the function of strain, and is set for based on the statistical course control method for use and guarantees that the rivet erection joint reaches predetermined detected quality.
The output of system's monitoring sensor 33 in the whole erection incident, and will on curve, set beginning or the zero point that a predetermined reference point shows curve.Here, usually or exemplarily this reference point is placed the position of rising from zero point of beginning of reference curve, thereby being seen fine error on the curve is minimized, this error is by the slight slippage of operation course of work central shaft traction clamp or slide and produce.By the reference point of this position, one group of vertical or pressure or strain tolerance limit are used to provide a tolerance limit band, and rivet installation curve subsequently must be followed this tolerance limit band.Can use these tolerance limit bands according to the experience that obtains, these tolerance limit bands also can draw by the percentage of area under the calculated curve or workload, and it is specially adapted to have the rivet that keeps mandrel head.Fig. 4 a and 4b are end openings rivet and the load-time graph schematic diagram that keeps the mandrel head rivet.Though inessential, preferred localization method is to allow the output signal of sensor 33 ' or 33 can imitate the active force load-time graph that is used for specific installation.Thereby, by this reference curve, can be applied to the end openings rivet and keep the mandrel head rivet about the tolerance limit band of pressure or strain, and can draw curve as shown in the figure.Tolerance limit is applied to maximum the installation in load or the active force, and finishing the drafting of reference curve, the distance or the time of the maximum active force that load or active force and increase be installed or pressure and increase are relevant.
Though for the sake of clarity, the situation of supposing is only to have only a rivet that head is installed, thereby only adopts a monitoring equipment, and a plurality of situations that head is installed that adopt are also arranged.Installed by frame and fixedly the time, will install on the head at each rivet and all be provided with monitoring sensor in this situation especially rivet erecting device.
Each rivet setting tool or a plurality of installation head all have and have relevant device, and this equipment is furnished with the data handling system 70 based on processor.System 70 is as an integrator, and its tissue and processing are from the signal of load checkout equipment, thus the process of being for further processing.Installation has the software kit of particular design algorithm, thereby can handle and comparing data, and these data for example are corresponding to the load of time or distance or force value.For the purpose of diagnosing, can on suitable monitor, show visibly with the form of chart or curve.In addition, this signal can be " red light/green light " or earcon, represents the state of execution cycle.Each rivet repeats above process, therefore can prepare and the historical record and the standard of installing compared.
In principle, system monitoring whole erection curve also compares load or the force value corresponding to time or distance.System in so-called mode of learning, monitor and relatively the many rivets in the practical application install.As shown in Figure 5, install, obtained " on average " curve with respect to the mean value of the coordinate system of displacement or time from pressure or active force by more many tubular rivets.
Mention typical strain or the pressure-time curve shown in Fig. 4 a and the 4b especially, this curve is detected and is obtained by Fig. 1 a～sensor shown in Figure 3 in typical rivet installation process.According to the securing member type of installing, curve may be different, and curve is limited by many different piece C1-C5 usually.When the tooth portion of clamp engages with axle, first or beginning part appear at the C1 place.According to sheet number that is riveted on material together and the space between them, because the trickle slippage of erecting tools clamp and apply the tension of sheet material, the beginning of curve partly often has significant deviation.When rivet body longitudinally shortened under the effect of the installation load that axle applies, the initial deformation of rivet body was clamped together sheet material, and the second portion C2 of curve or parts adjustment member are relevant therewith.The third part C3 of curve is that spindle head enters the rivet body generation.The decline that active force or load are installed is because axle enters the rivet body, and then passes the hole, and the hole has applied less resistance to active force is installed.The 4th portion C 4 of curve, because the rivet installed load is applied to axle and causes, axle enters rivet body and near using near the blind side of workpiece, can not further advance, constantly acting load merges along with the filling in the hole of using workpiece and joint and increases.Constantly acting load increases the breakpoint up to axle.When axle breakpoint fracture, rivet installation, and when allowing axle to push the axle recovery system, produce last portion C 5.
Should be noted that according to the securing member type that adopts or the difference of securing member erection unit, difform curve may occur equally.And, the sensor 33 that rivet monitoring system of the present invention 32 adopts, the strains that produce in the cast main body 54 with rivet setting tool 30 do not rely on to being used for determining to be applied to the active force on the rivet 49 or the desirable mechanism or the replacement mechanism of load.As described below, though the variation of specified quantitative can take place for the part duration of these curves and size, a large amount of deviations of curve represent that fault has appearred in the rivet installation or problem has appearred in member.Distribute because the mean value of system's utilization " good " or acceptable installation historical record is set acceptable average load, the distribution that system produces is relatively independent of the location of cast main body 54 upper sensors 33 or the specific manufacturing environment of cast main body 54.This is the improvement to other system, and described other system utilizes load element and impingement length sensor to explain the impact curve of independent load.
Example shown in Fig. 4 c is a picture group table of rivet body length and axle breaking load rivet installation results when changing to the limit of making tolerance limit.Obviously different with specified rivet body length such as maximum rivet body length with specified axle breaking load G2 with minimum axle breaking load G1.It also is clearly from the change of figure initial position that the slip of the clamp of erecting tools makes curve G7.
Strain is adjusted the distance or the curve of time shows the overlapping and change of shape of outlet.Because the obvious unsettled character of above-mentioned curve, so on these curves, be difficult to determine one or more continuous points.Be difficult to rivet installation and one group of known acceptable installation or average the installation are compared.We notice that for the end openings tubular rivet, above-mentioned installation curve is very representative, and spindle head enters the rivet body, make typical two peak values of curve generation shown in accompanying drawing 4a.Usually these two peak values are called spindle head respectively and enter load and time Pe, Te and axle installation load and time Ps, Ts.
For open-ended tubular rivet curve, a kind of comparative approach is by monitoring the output valve of strain measurement equipment continuously, and these data are installed to distribute with known rivet continuously compares.In order to adapt to the rivet manufacture deviation, tolerance limit is applied in the installation curve, this tolerance limit is typically expressed as one group of banded tolerance limit curve G3.Thereby, for any new tubular rivet of installing, the curve that produces is installed all should be dropped between the banded tolerance limit curve.Though the installation curve practicality because rivet is made tolerance limit normally and workpiece causes the installation curve deviation, therefore is difficult to set the tolerance limit band curve that can hold above-mentioned deviation, and may has to this tolerance limit band curve setting is got non-constant width.Thereby this wide tolerance limit band can accept to understand originally unaccepted installation (as the minute differences of needs identification workpiece grip thickness etc.).
Fig. 4 c shows a kind of method of definite tolerance limit band.The monitoring of this method comes from the active force that tubular rivet subsequently installs or the coordinate system of pressure and time or distance, data and reference curve are contrasted and compares.May there be multiple situation in the installation of tubular rivet, below describes these situations respectively with reference to accompanying drawing 4c:
First kind of situation that rivet is installed is: with regard to the principal length and axle breaking load of rivet, rivet is installed has specified tolerance limit, and installs by refining erecting tools.This situation can be considered to reliable installation, because the riveted joint curve is positioned at any tolerance area of formation.
Second kind of situation that rivet is installed is: with regard to rivet body length and axle breaking load, rivet is installed has Maximum tolerance, and installs by refining erecting tools.This situation also can be considered to reliable installation, because the riveted joint curve is positioned at any tolerance area of formation.
The third situation that rivet is installed is: spindle head is processed into size below the specification, but in others, with regard to the principal length and axle breaking load of rivet, has specified tolerance limit, and install by refining erecting tools.This situation is considered to installation inferior, because the riveted joint curve has departed from the tolerance area of expectation.For example, spindle head from rivet body pull out form chance of installing inferior can be very big.
Thereby can see: joint must meet three independent benchmark just can be considered to reliable installation.At first, the initial part of curve must pass through tolerance area, because the initial job of this part representative riveted joint.The operation of this part is: workpiece sheet material is clamped together, begins and finish the filling in hole.And this part data (is open-ended rivet as rivet) when comprising spindle head and entering rivet body, or, as for keeping the rivet of mandrel head type, the data when roll-down type is installed beginning.Use these benchmark to set up one group of standard about time or active force tolerance limit band.
For generating baseline, generate the rivet installation reference line to be used for the quality of comparison rivet.Machine generates described baseline for each specific rivet and mounting condition at an easy rate.Accompanying drawing 5 shows the curve that quantity has statistical significance, and these curves are that system is with generating preferred mean strain or pressure-time curve.Perhaps, can utilize statistical method whether to determine sample load-time graph, thereby determine whether specific curve can be used for determining the junction curve enough near the junction curve.
In case set up baseline curve, utilized statistical method to set and go up tolerance limit band and following tolerance limit band.Strain that each riveted joint installs or pressure also can be followed the trail of to the data of time by system 32, since determine whether system has formed potential poor quality and installed.In this method that discloses several data analyses, be used for determining whether specific rivet installation is suitable.
Accompanying drawing 6a shows and is distributed in intermediate curve shown in Figure 5 or tolerance limit curve on the sample curve or tolerance limit band.In this system, all parts of intermediate curve all have the tolerance limit band that is defined in their sizes of clearly setting on every side.The strain of each rivet installation of system tracks or pressure determine to the curve of time whether this curve drops on the outside of tolerance limit band then.If riveted joint drops on outside the specific tolerance limit band really, then the operating personnel on production line give the alarm or warn.
Accompanying drawing 6b shows a kind of alternative tolerance limit passage or the tolerance limit band of rivet installation curve.Specifically, should be noted that different tolerance limit height is different along with the part of each curve.For example pick up between plate and rivet body deformation phases, set the tolerance limit band of first value, and between the filling and joint installation period in last hole, adjust the tolerance limit band beginning shown in the curve first.
As shown in Figure 7, a kind of comparative approach of replacement, its be used to discern two coordinate points or even single coordinate points, such as two coordinate points can be axle inlet point (Pe, Te) and axle breaking load point (Ps, Ts), perhaps single coordinate points only is axle breakaway poing (Ps, Ts), and with subsequently installation and these reference points compare.For the normal deviation that occurs in the installation curve that holds generation, the tolerance limit of application time and strain on these reference points has provided the tolerance limit square frame, and the rivet installation curve of An Zhuaning should pass through it subsequently.
Such as, can select with the first tolerance limit square frame equalization be located at first local maximum (Pe, Te) (this first local maximum shows the finishing of filling in initial plate tension hole, and inserts rivet body in this mandrel head) around.The second tolerance limit square frame is centered on the rivet mandrel fracture position.This fracture is limited by the last local maximum of curve usually, and this peaked load is higher than first local maximum.Perhaps, this point can be the maximum strain point that is detected.Curve G4 shows the rivet installation curve of the tolerance limit square frame outside of the approval that drops on first and second positions.Should be noted that several practices may cause rivet to drop on the outside of these tolerance limit square frames, break down such as the size of bank up improperly parts to be riveted, rivet hole, inappropriate manufactured head or rivet setting tool.
Fig. 8 shows a kind of replacement method, and this method has adopted the integral analysis of the rivet installation of comparing with a new rivet installation curve.In this, can calculate specific rivet installation G5 and the difference between the installation curve G6.This is the analysis of an absolute value difference, calculate the difference absolute value between the special time curve, and time constant is used for calculating two areas between the curve.Should be noted in the discussion above that the different piece of strain, can both utilize the also difference between the calculated curve the curve of time or displacement.In this, begin part until the first local peaked data are available from curve.In addition, the area difference between first part and second local maximum may be useful.Preferably, the difference of the area between the last local maximum curve afterwards relevant with the rivet fracture is not calculated by system.Deviation in load-time graph after the last local maximum often increases exponentially, and can not whether good judgement contribution information be installed to specific rivet in fact.This is because post-rift pressure of rivet or strain can not characterize good rivet installation.We can imagine the various different integration methods of employing, comprise pixel counts method or Rieman Sums analytical method, but are not limited to this.
Fig. 9 shows an intermediate curve, and the joint fixed point on this curve has been used the tolerance limit passage, has used the tolerance limit square frame at the axle breakaway poing place of this curve.The first of load-time graph that a specific rivet is installed and the first of intermediate curve compare.Install in order to finish a good rivet, processor detects the rivet installation curve, and itself and tolerance limit band are carried out comparison, and curve should fall into predetermined tolerance limit band.If the specific load-time data of a specific rivet installation drops on the first tolerance limit band or tolerance limit square frame outside, be recorded as inferior an installation, and send vision and audible alarm to the user.
Therefore can see, a typical reference chart, its will have the vertical line of a tolerance limit square frame, around the largest spindle shaft breaking load point along 80%+/-dT and+/-linear window between the dZ and initial curve used the tolerance area that tolerance limit produces.Shall also be noted that initial point curve C on every side 1Beginning part (being called " 10% amputation ") all ignore at any figure or in calculating, this is because the curve of the formation of the low load of experience instruction and time/displacement has presented " noise " or irregular form.This ascribes deviation to, and for example initial clamp clamps, against the rivet flange of the front-end element of instrument with may be the deviation that the slight ventilation of erecting tools self produces.
Figure 10 is the standard time-load curve with rivet installation of 10% amputation.As previously mentioned, the beginning of rivet Installation Events partly is highly non-linear incident, and it has produced many tangible noises.By in analysis, clipping the 10% initial part of curve, it can be produced more accurately analyze.Determine the setting of the random point of 10% amputation based on the historical record of former installation, and can adjust this random point accordingly.This barrier portion can be to be in several milliseconds of stages, such as, from the zero point of initial curve.
Figure 11 shows that presents is called a little and the analytical method of square frame.Reference or the averaged curve described before this system combines.Determined the directed force F of the last local maximum of sign axle fracture BAnd time T BNumerical value.The proportionality coefficient K that abstriction power is multiplied by less than 1.0 calculates directed force F then S1Then system determines directed force F on reference curve or the averaged curve S1The position, and determine the time value T of the position of the data relevant with active force 1System-computed reference time T then R, it equals T B-T 1Then the tolerance limit square frame is located at F as previously mentioned BAnd T BOn every side.
The same with all former samples, when identifying that new rivet is installed, initial elder generation of system is with the alignment of data of object data set and intermediate curve or datum curve, this realizes by following manner, that is: alignd the zero point of above-mentioned data set, perhaps make such as second local maximum or the last such further feature alignment of local maximum, perhaps make the appearance alignment first time (see figure 10) of strain value.In case alignment of data just determines whether the data relevant with the axle fracture drop in the tolerance limit square frame, if data drop on this tolerance limit square frame outside, then starts and reports to the police.
System determines the directed force F of the last local maximum relevant with object data then bAnd time T bDirected force F bMultiply by proportionality coefficient K to determine directed force F S2For relevant directed force F S2, time T 2Be T P, this T PBe determined and deducted and obtain T from the relevant time of rivet mandrel fracture fTime T fWith time T FRelatively, determine whether it is in scheduled time tolerance limit T TIn.If T FIn the tolerance limit band, the rivet installation is acceptable so.Should be noted that proportionality coefficient K can be about 0.05～about 0.6, that more special is is about 0.15～about 0.45, the most special is about 0.2.
Accompanying drawing 12 illustrates the tracking quality of one group of securing member.Such as seen from Fig., be provided with a pair of tolerance limit band, and when a specific rivet does not satisfy specific quality measured values or calculated value, have indication.When the rivet of scheduled volume breaks down continuously, system alert and notifying operation personnel will determine whether to have used many new securing members, perhaps great change has appearred in the function of equipment or the material of processing, thereby may need to recalibrate or system for varying.
Above-mentioned comparative approach has adopted the mode of the manufacturing tolerance limit of stochastic transformation rivet and workpiece.But in practice, make batch last tolerance limit that tolerance band can occur or tolerance limit down for one, when the new-type manufacturing processing of appearance or production equipment were readjusted, last tolerance limit or time tolerance limit varied to other the limit then.Thereby may batch determine one group of installation curve of single batch of rivet by specific manufacturing.The curve that forms can illustrate one group of numerical value, this group numerical response the size and the intensity of that particular process batch.But described batch may have the tolerance limit that departs from averaged curve.For example this batch may relate to maximum length and minimum breaking load, and averaged curve can be reacted this trend.Thereby other a collection of rivet may be minimum length and maximum breaking load under a kind of production environment, thereby it drops on the outside of some tolerance limit bands of benchmark rivet, especially these tolerance limit bands be set under the very near situation of primitive curve, all the more so.Therefore except above-mentioned widening, may also need further to widen curve, to hold the deviation of a plurality of original learning curve.Thereby, set to such an extent that the tolerance limit band of non-constant width has increased and holds inferior install or rivet is processed the chance of inappropriate deviation.
The another one trouble also may occur, promptly have the rivet that keeps axle, spindle head does not enter the situation (seeing Fig. 3 c) that rivet body causes when mounted.The characteristic of spindle head inlet point is no longer obvious, and demonstrates and carry out the more difficult of installation curve, when the curve trend is very similar, is clear that particularly any tolerance limit band all may have been covered rivet inferior and install.
Figure 13 a illustrates the sensor 33 that is provided for measuring microstrain.Adopt little deviation of sensor 33 testing tool housings.Can measure the described little deviation in the housing in the power tool housing of a standard or front end shell or on the hydraulic tool housing in long-range reinforcement.The output of sensing data is stored in the memory and by using outer computer 70 that it is fetched.Analyze data point and obtain chart.Selectively, the data that derive from computer also can produce the statistical process control information that is used for application-specific.
System 1a～2b is depicted as sensor 33a, and this sensor is a flat microstrain sensor usually, and its frequency range is 0.5～100,000HZ.Sensor element is formed by piezoelectric, and its case material is preferably the titanium of band oxygen sealing.
In addition, according to instruction of the present invention, a kind of method that securing member is installed with erecting tools has been proposed.This method comprises the first step: define one group of sample strain/time data.The strain of the rivet installation process that sensing is assessed.Strain-the time data of sensing is alignd with above-mentioned one group of sample strain/time data according to the time.Strain is peaked the axle breakaway poing of the strain/time data of measurement to occur being used for distinguishing.The breaking strain value and the predetermined expectation breakaway poing strain value of this measurement are compared, strain/time signal and the sample strain/time signal of measuring compared.
About these two kinds of data of strain/time data of sample strain/time data and measurement, can form curve or waveform based on these group data in the time-domain.Can search for the predetermined characteristic of these waveforms, these features are used for align data.As above-mentioned, this can be the highest detected strain, predetermined strain, perhaps can be additional features, and for example this feature can be first local maximum greater than given strain value.
When monitoring the installation of tubular rivet, in the rivet installation process, the axial strain in the monitoring rivet setting tool cast main body is to form one group of relevant microstrain signal.For suitable time value of each these microstrain signal allocation, to form a row strain/time data.The beginning of rivet installation procedure and the end of this operation are defined.Perhaps, can select to use the peak strain relevant to define with the fracture of axle.Determine the total time of riveted joint Installation Events, and itself and predetermined desired value are compared.In addition, system can utilize the breaking load of axle to determine whether this load has dropped within the strain predetermined value predetermined tolerance limit band on every side, and described strain predetermined value characterizes the axle fracture.
For forming sample strain/time data, obtain the training strain measurement signal that quantity has statistical significance, and make these data combinations, to be formed with typical curve.According to typical curve definition tolerance limit band, this typical curve is represented the predeterminated level of joint quality.
When described system was set up supply pressure in order to monitor portion rivet installation procedure, system was suitable for a proportionality coefficient in strain or the time data at least one, and this proportionality coefficient is the function of supply pressure.About this point, defined one group of function relevant with the supply pressure of variation.These functions have been transformed into one group of strain or the pressure translation data to the time with strain-time data.Obviously, doing analysis, can change sample time-strain data or tolerance limit band corresponding to the change of supply pressure equally with before determining whether the rivet installation can be accepted.
Figure 13 b shows the pressure sensor shown in the accompanying drawing 3.This sensor is preferably the mechanical type pressure drag silicon pressure sensor that is installed in the stainless steel casing.An example of sensor 33 ' can obtain from the overstable IC sensor of 87n type (IC Sensors Model 87nUltrastable).
In the rivet manufacture process, the tolerance limit of rivet body length and axle breaking load may change to the other end from an end of tolerance limit band.This is that the operation deviation causes and since conversion make equipment, the raw material that adopt different batches or the tool of production is changed to another size from the product of certain size product.Correspondingly, respectively a more narrow tolerance limit band is used for the end openings rivet and keeps the mandrel head rivet, rather than the tolerance limit band of Nominal Width is imposed on each curve.Consequently, having only rivet near specified rivet body length, operation thickness and axle breaking load just will be selected as is good installation.
But when adopting other production that the rivet of minimum rivet body length of having of manufacturing and minimum axle breaking load is set, then the distribution of described curve will or even be lower than the first and second tolerance limit band places in the bottom of the first and second tolerance limit bands.Computer processor will be discerned this newtype, suppose to install to be considered to acceptable, and then computer will be reset mean value and use the tolerance limit benchmark around this new mean value.Computer will store the averaged curve data at initial stage.
But, when the mode that adopts conversion manufacturing parameter once more make have the rivet of maximum rivet body length and largest spindle shaft breaking load the time, after the predetermined frequency of failure, the distribution of curve produces a certain tolerance band.Suppose to install to be considered to acceptable, computer processor will be discerned this new type again, and computer processor then will reset mean value, and be applied in this new mean value tolerance limit benchmark.Computer will store the averaged curve data at initial stage once more.
Thereby if used a collection of hybrid working spare with different tolerance limits, then computer processor can be selected the nominal reference curve or than harmonic curve or higher curve, and installation more subsequently.If rivet is installed the outside of dropping on these three reference curves, this installation will be considered to fail.
System will in have preference pattern, in case remove old rivet, operating personnel can reset and repeat to install, but each stage of incident will be recorded, and form the part of the quality of guaranteeing particular job.In second kind of system of suggestion was provided with, as described below, the self study program was used in suggestion, with it as a series-operation.Can see, be used to form the tolerance limit band, in the 80% completed work that X and Y location application are selected in the tolerance limit of datum curve with for the vertical reference line of determining X and Y, all be optional.
Figure 14 shows and is used for showing that the rivet installation process shows the strain-time diagram of the influence of supply pressure change.Curve C 1 is supply pressure strain-time graph from sensor 33 when being in pressure P 1 value.Curve C 2 is supply pressure strain-time graphs from sensor 33 when being in pressure P 2 values.The same as can be seen, have duration that lasts longer than the rivet Installation Events that curve C 1 describes of rivet Installation Events that the curve C 2 of supply pressure P2 describes.The rivet installation process that these two curves are described has characterized the rivet that can accept quality and has installed.Pressure sensor 37 is set for and detects the trickle change of supply pressure in the initial time in the rivet Installation Events, and it has provided output valve, uses for processor 70.Processor 70 is applied to a columns certificate that is characterized by time and strain from strain transducer 33 with proportionality coefficient, thereby so that data normalization forms as the columns certificate that C3 described, this proportionality coefficient is the function of supply pressure.Can imagine, first proportionality coefficient S1 can be applied to the measured value of strain or active force, and/or second proportionality coefficient S2 can be applied to the measured value of time.About this point, as discussed above the same, change earlier according to before analyzing at this columns.
Alternative dispensing means is, we envision, with the system of utilization linear pressure to the measurement data utility function, be used in the securing member erection unit, this securing member erection unit utilization signal that the pressure sensor of working fluid pressure obtains from testing tool, or the signal that obtains from the force sensors of the active force of detection effect on securing member.About this point, any detection data of gathering according to the time all can realize detecting the conversion of data.In this manner, this system is set for the fixing affirmation of management securing member, and this confirms and drive wire pressure independent, and then irrelevant with the speed of force transmittal member in the instrument.
In case data that the advantage of the system that the front is mentioned has been systematic collection, they are exactly fully flexibly.They distribute and the operation distribution by relatively installing, and provide each rivet correct thorough assurance of installing.They can provide each rivet all to be installed on the information of correct hole and correct grip thickness.Whether they can monitor the number that rivet is installed, and can differentiate rivet and discharge.They can be by relatively entering the installation distribution of load and the time of relatively experiencing, the wearing and tearing that clamp is installed with monitoring tool up to axle.This system also can conveniently provide about the factory management data of construction rate, production efficiency and with rivet consumption and automatic rivet order system again and couple together.And they can link to each other with full-automatic rivet setting tool, thus the assurance that provides assembling to finish according to plan.
According to following detailed description, other application of the present invention also can become obvious.Should know: though above-mentioned detailed description and concrete example have been represented the preferred embodiments of the present invention, these describe in detail and concrete example is just done and illustrated usefulness, and it is not used for limiting the scope of the invention.
We also envision and can be applied to many aspects of the present invention on the riveting equipment of other type.Though many advantages for example of the present invention possibly can't realize that this system can be used for the self-tapping type rivet.In addition, this system can be used for fixing polytype securing member, and for example it can be installed multipart securing member, solid securing member, pincers and goes into formula securing member or stud bolt.Specification of the present invention is only being done demonstration usefulness in nature, thereby, do not break away from the distortion of purport of the present invention, all drop on of the present invention meaning within the scope.These distortion are not considered to break away from thought of the present invention and scope.

Claims (38)

1. rivet setting tool with rivet supervisory circuit, it is used to install tubular rivet, described rivet is the type with axle of a frangible tubular body and extension, this axle comprises the bar portion of the described frangible tubular body of the head of an expansion and passing through of extending back from the head, and it is characterized in that described riveted joint erecting tools comprises:
The hydraulically operated blindrivet installation tool, described blindrivet installation tool comprises main body, engage the riveted joint assembly and the piston component of motion vertically of the described bar portion of described axle, this piston component is connected with described riveted joint assembly operation ground, drives described axle in response to the compression hydraulic fluid that applies on the described piston component;
The strain transducer that links to each other with main body;
Control circuit, described control circuit has analysis circuit and display circuit, and described analysis circuit is coupled to described strain transducer.
2. the rivet setting tool with rivet supervisory circuit is characterized in that, described strain transducer links to each other with the outer surface of described main body, and described main body is positioned near the piston; Described rivet setting tool comprises:
Observation circuit, it is coupled to described strain transducer.
3. the rivet setting tool with rivet supervisory circuit according to claim 2 is characterized in that this main body comprises front end shell, and this front end shell links to each other with described strain transducer.
4. the rivet setting tool with rivet supervisory circuit according to claim 2, it is characterized in that described rivet setting tool comprises front end shell, this front end shell links to each other with this main body by the coupling part, the adjacent layout with this coupling part of described strain transducer.
5. the rivet setting tool with rivet supervisory circuit according to claim 2, it is characterized in that described rivet setting tool comprises quick-replaceable front end, this front end has an adapter and front end shell, described adapter and this main body are fixedly linked, and this front end is connected with described adapter removedly.
6. the rivet setting tool with rivet supervisory circuit according to claim 5 is characterized in that arranging described strain transducer on described main body, near described adapter.
7. the rivet setting tool with rivet supervisory circuit according to claim 5, it is characterized in that this adapter between the rivet installation period between described front end shell and described main body.
8. the rivet setting tool with rivet supervisory circuit according to claim 5 is characterized in that described rivet setting tool comprises a screw element, itself and being threadedly engaged with of forming on described adapter surface.
9. the rivet setting tool with rivet supervisory circuit according to claim 5, the countersunk that it is characterized in that described main part limitation, the position of described strain transducer is in abutting connection with this countersunk.
10. rivet setting tool with rivet supervisory circuit is characterized in that described rivet setting tool comprises:
Main body;
The fore-end that has adapter and front end shell, this adapter links to each other with described main body at the first predetermined torque place, and this front end shell links to each other at the second moment of torsion place with described adapter;
Attachment, it is coupled to rivet off and on;
Strain transducer links to each other with described main body.
11. the rivet setting tool with rivet supervisory circuit according to claim 10 is characterized in that described rivet setting tool comprises front end nut, this front end nut is connected described front end shell and adapter.
12. the rivet setting tool with rivet supervisory circuit according to claim 10 is characterized in that described rivet setting tool comprises observation circuit, this observation circuit is electrically coupled to described strain transducer.
13. the rivet setting tool with rivet supervisory circuit according to claim 10 is characterized in that described adapter and described main body are by being threaded.
14. the rivet setting tool with rivet supervisory circuit according to claim 10 is characterized in that hole of described main part limitation, described strain transducer is adjacent to this hole and arranges.
15. the rivet setting tool with rivet supervisory circuit according to claim 10, a pair of chamber by piston mobile segmentation that it is characterized in that described main part limitation, described piston mobile links to each other with described bonding part.
16. the rivet setting tool with rivet supervisory circuit according to claim 10 is characterized in that described main body comprises the cast metal part.
17. the rivet setting tool with rivet supervisory circuit is characterized in that described rivet setting tool comprises:
Main body, first chamber that this main part limitation is segmented by activatable piston;
The attachment that link to each other with described activatable piston;
The front end shell that links to each other with described main body;
The strain transducer that links to each other with described main body;
Observation circuit, it is coupled to described strain transducer.
18. the rivet setting tool with rivet supervisory circuit according to claim 17 is characterized in that, described front end shell and this main body are by being threaded.
19. the rivet setting tool with rivet supervisory circuit according to claim 17 is characterized in that, described main part limitation a ring-type countersunk, described sensor is adjacent to described ring-type countersunk and locatees.
20. the rivet setting tool with rivet supervisory circuit according to claim 17, it is characterized in that, described rivet setting tool comprise the front end shell nut and with the adapter of described main body by being threaded, described front end shell nut keeps described front end shell and described adapter to link together.
21. the rivet setting tool with rivet supervisory circuit according to claim 20 is characterized in that, described strain transducer is the strain piezometer.
22. the rivet setting tool with rivet supervisory circuit according to claim 21 is characterized in that, described main part limitation second chamber, and described strain piezometer places in second chamber.
23. the rivet setting tool with rivet supervisory circuit according to claim 20 is characterized in that described strain transducer is a hydrostatic sensor, it monitors the pressure of fluid in first chamber.
24. the rivet setting tool with rivet supervisory circuit according to claim 17 is characterized in that described strain transducer is for detecting the strain transducer of axial strain.
25. the rivet setting tool with rivet supervisory circuit according to claim 17 is characterized in that described rivet setting tool comprises the rivet the accepted installation indicator that operatively is connected with described observation circuit.
26. the rivet setting tool with rivet supervisory circuit according to claim 24 is characterized in that this strain transducer is the microstrain sensor.
27. the rivet setting tool with rivet supervisory circuit is characterized in that described rivet setting tool comprises:
First pressure that is coupled to rivet applies parts;
Has the main body that second pressure that is coupled to rivet applies parts; With
Strain transducer, this strain transducer is connected to described main body.
28. the rivet setting tool with rivet supervisory circuit according to claim 27 is characterized in that described strain transducer is positioned to leave the position that described second pressure applies parts first radial distance.
29. rivet setting tool with rivet supervisory circuit, described rivet has the axle of a frangible tubular body and extension, this axle comprises the bar portion of the described frangible tubular body of the head of an expansion and passing through of extending back from the head, and it is characterized in that this rivet setting tool comprises:
The hydraulically operated blindrivet installation tool, described blindrivet installation tool comprises the piston component of riveted joint assembly, motion vertically of the described bar portion that engages described axle and the ring-type main body around described piston, this piston component operatively is connected with described conjugative component, and response applies the compression hydraulic fluid and drives described axle on described piston component;
Be coupled to the strain transducer of described main body;
Pressure sensor, the working fluid of its described hydraulic operation blindrivet installation tool that is coupled;
Control circuit, described control circuit are coupled to described strain transducer and described pressure sensor.
30. the rivet setting tool with rivet supervisory circuit according to claim 29 is characterized in that this rivet setting tool comprises can accept to install indicator that it operatively is connected with described control circuit.
31. the rivet setting tool with rivet supervisory circuit according to claim 29 is characterized in that described strain transducer is the microstrain sensor.
32. the rivet setting tool with rivet supervisory circuit according to claim 29 is characterized in that described control circuit comprises integrator, comparator that links to each other with described integrator and the programmable storage that links to each other with described comparator.
33. the rivet setting tool with rivet supervisory circuit according to claim 29 is characterized in that described main body is a cast construction.
34. the rivet setting tool with rivet supervisory circuit according to claim 33 is characterized in that described strain transducer is positioned on the outer surface of described cast construction.
35. the rivet setting tool with rivet supervisory circuit according to claim 33, the installation site of sensor that it is characterized in that described main part limitation, the described main body under the sensor installation site has predetermined thickness.
36. the rivet setting tool with rivet supervisory circuit is characterized in that described rivet setting tool comprises:
Be coupled to the main body that rivet is installed the reverse mounted component of rivet thereby have;
Front end shell is held at least one described parts;
Connected system is arranged between described front end shell and the connecting elements;
Strain transducer links to each other with described main body.
37. the rivet setting tool with rivet supervisory circuit according to claim 36 is characterized in that described rivet setting tool comprises first press member, it is coupled to first side of rivet.
38. the rivet setting tool with rivet supervisory circuit according to claim 34 is characterized in that described rivet setting tool comprises that an active force produces instrument.
CN 200590000056 2004-03-24 2005-03-22 Rivet installation tool with rivet monitoring circuit Expired - Lifetime CN201154388Y (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US55598904P 2004-03-24 2004-03-24
US60/555,989 2004-03-24
US60/567,576 2004-05-03
US60/587,971 2004-07-14
US60/589,149 2004-07-19
US60/612,772 2004-09-24
US60/625,715 2004-11-05

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102227288B (en) * 2008-11-28 2013-10-09 雷诺股份公司 Device for crimping element to be crimped on part
CN104428081A (en) * 2012-03-06 2015-03-18 Tkr特殊工具有限公司 Tool connection
CN105382172A (en) * 2015-12-15 2016-03-09 眉山南车紧固件科技有限公司 Intelligent riveting monitoring method and system
CN105643243A (en) * 2014-11-24 2016-06-08 博尔霍夫.奥塔陆股份有限公司 System and method for crimping a fastening component on a support
CN106493280A (en) * 2015-09-08 2017-03-15 Vvg彼菲斯蒂冈斯技术两合有限公司 Method for setting up hand rivet rifle
CN107063657A (en) * 2017-03-02 2017-08-18 上海交通大学 A kind of aircraft pneumatic riveting operational qualification decision maker and decision method
CN109773232A (en) * 2011-07-15 2019-05-21 波音公司 The method and system that processing procedure quality controls during boring-filling out component

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102227288B (en) * 2008-11-28 2013-10-09 雷诺股份公司 Device for crimping element to be crimped on part
CN109773232A (en) * 2011-07-15 2019-05-21 波音公司 The method and system that processing procedure quality controls during boring-filling out component
CN104428081A (en) * 2012-03-06 2015-03-18 Tkr特殊工具有限公司 Tool connection
US9796014B2 (en) 2012-03-06 2017-10-24 Tkr Spezialwerkzeuge Gmbh Tool connection
CN104428081B (en) * 2012-03-06 2018-11-09 Tkr特殊工具有限公司 Tool connects
CN105643243A (en) * 2014-11-24 2016-06-08 博尔霍夫.奥塔陆股份有限公司 System and method for crimping a fastening component on a support
CN106493280A (en) * 2015-09-08 2017-03-15 Vvg彼菲斯蒂冈斯技术两合有限公司 Method for setting up hand rivet rifle
CN105382172A (en) * 2015-12-15 2016-03-09 眉山南车紧固件科技有限公司 Intelligent riveting monitoring method and system
CN107063657A (en) * 2017-03-02 2017-08-18 上海交通大学 A kind of aircraft pneumatic riveting operational qualification decision maker and decision method

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