CN105784249A - Measuring device and method for torsion-tension relation of threaded structure - Google Patents
Measuring device and method for torsion-tension relation of threaded structure Download PDFInfo
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- CN105784249A CN105784249A CN201610183179.8A CN201610183179A CN105784249A CN 105784249 A CN105784249 A CN 105784249A CN 201610183179 A CN201610183179 A CN 201610183179A CN 105784249 A CN105784249 A CN 105784249A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/24—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
- G01L5/246—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed using acoustic waves
Abstract
The invention provides a measuring device and method for the torsion-tension relation of a threaded structure, and aims at solving the problem that the torsion-tension relation of a relatively short bolt or a threaded structure of a relatively compact structure cannot be measured via a traditional method. The measuring device applied to a bolt comprises a fixing support, a fixing piece, a torque applying structure, a torque measuring structure and a sound wave axial force measuring instrument; an internal thread test piece which is installed in cooperation with the bolt is arranged in the fixing support; the fixing piece is arranged in the fixing support, and the bolt is inserted with the fixing piece and the connected with the internal thread test piece; the torque applying structure applies a torque on the bolt, so that the bolt is screwed up relative to the internal thread test piece and the fixing piece; the torque measuring structure is connected with the torque applying structure to measure the torque; and the sound wave axial force measuring instrument is fixed at the end surface of a screw of the bolt, and used to measure the pretightening force of the bolt when the bolt is screwed up relative to the internal thread test piece and the fixing piece.
Description
Technical field
The present invention relates to mechanical engineering technical field, particularly a kind of helicitic texture turns round the measurement apparatus and measuring method established unprincipled connection.
Background technology
Threaded is one of most widely used assembly connection mode in electronic product.According to statistics, the threaded fastener on each automobile is up to 4000 to 7000, and threaded assembling work amount also accounts for the 70% of whole assembly operation of motor amount.Threaded fastener, in rundown process, produces the power (this power is called pretightning force) with fastening effect, and relies on frictional force to realize self-locking, thus reaching to keep the purpose of pretightning force owing to material is stretched in inside.Suitable pretightning force is possible not only to promote threaded anti-loosening property, it is ensured that the reliability of mechanical assembly, and can control erection stress size, it is ensured that assembly precision.
But not easily directly measure due to pretightning force and control, Practical Project generally adopting other method indirectly control pretightning force.Conventional method includes: calibrated wrench method, angle method, elongation method and surrender method.Calibrated wrench method controls pretightning force indirectly by controlling screw-down torque.The method has the features such as instrument is simple, flexible operation, cost are low, is therefore widely used in engineering practice；But the unstability due to factors such as coefficient of frictions so that pretightning force dispersion is generally bigger.Therefore, calibrated wrench method measurement pretightning force control accuracy is not high.
Currently in order to pretightning force control accuracy when improving calibrated wrench method assembling, adopt the torsion of the helicitic texture that relatively conventional sampling experiment measures every batch to establish unprincipled connection, then utilize this calibrated wrench method accurately to control the pretightning force of helicitic texture.Tradition as shown in Figure 1 is turned round and is drawn experiment, turn round, by traditional bolt axial force, the axial force sensor 104 drawing sandwiched between the bolt 103 of testing machine and female thread test specimen 101 (nut etc.) and test specimen cushion block 102 measures the pretightning force of bolt, general axial force sensor 104 has certain thickness, test specimen cushion block 102 is also required to certain thickness simultaneously, tightening piece 105 is driven to tight a bolt 103 by motor 107, torque sensor 106 is utilized to measure screw-down torque, this torsion draws bolt 103 length that experimental machine can be measured must be longer, therefore this bolt is turned round and is drawn the experimental machine can not to the comparatively compact helicitic texture measurement of the shorter bolt 103 of length and structure.
In sum, tradition turn round draw experiment measuring there is the problem that the torsion of bolt (bolt arrangement that especially length is longer) being merely able to measure large-size is established unprincipled connection, it is impossible to the torsion of enough bolts that length is shorter and the comparatively compact helicitic texture of structure is established unprincipled connection measurement.
Summary of the invention
The purpose of the embodiment of the present invention is in that to provide a kind of helicitic texture to turn round the measurement apparatus and measuring method established unprincipled connection, with the problem of the bolt solving traditional torsion to draw to be only capable of measuring large-size, measurement of can not the torsion of the comparatively compact helicitic texture of the shorter bolt of length and structure being established unprincipled connection.
To achieve these goals, the measurement apparatus established unprincipled connection turned round by a kind of helicitic texture that the embodiment of the present invention provides, and is applied to bolt, and described helicitic texture is turned round the measurement apparatus established unprincipled connection and included:
Fixed support, coordinates the female thread test specimen installed to be arranged in described fixed support with described bolt；
Fixture, is arranged in described fixed support, wherein, after described bolt plugs described fixture, is connected with described female thread test specimen；
Moment of torsion applies structure, applies structure for described moment of torsion and applies moment of torsion on described bolt, makes described bolt tighten relative to described female thread test specimen and described fixture；
Torque measurement structure, applies structure with described moment of torsion and is connected, be used for detecting described moment of torsion；
Sound wave axle force measuring instrument, is fixed on the end face of screw rod of described bolt, and described sound wave axle force measuring instrument is used for detection when described bolt is tightened relative to described female thread test specimen and described fixture, the pretightning force on described bolt.
Further, described sound wave axle force measuring instrument is ultrasound wave axle force measuring instrument.
Further, described ultrasound wave axle force measuring instrument includes: be arranged on described bolt screw rod end face on piezoelectric ceramic piece；
Sound wave generation/receptor that be connected with described piezoelectric ceramic piece, for described piezoelectric ceramic piece applying voltage signal；And
Be arranged on described bolt screw rod end face on, the temperature sensor of the extruder temperature that detects described bolt and be connected with described temperature sensor, the temperature detector of the temperature value that compares acquisition.
Further, described moment of torsion applying structure includes: the moment of torsion of the bolt head being connected in described bolt applies structure tightening piece；
The torque measurement structure being connected with described tightening piece；
The decelerator being connected with described torque measurement structure；
The motor being connected with described decelerator；Wherein,
Described electric machine rotation, described decelerator is driven to rotate, driving described torque measurement structure, described tightening piece successively and rotate relative to described female thread test specimen with the described bolt of described tightening piece clamping, described torque measurement structure measurement makes the described moment of torsion that described bolt fastens.
Further, described torque measurement structure includes: outer corner measurement mechanism, is connected between described decelerator and torque sensor, for measuring the rotational angle of described tightening piece；
Described torque sensor, is connected between described outer corner measurement mechanism and described tightening piece, for detecting the moment of torsion of described tightening piece.
Further, described fixture includes: cushion block test specimen, is used for plugging described bolt；
Described fixed support, including two installing holes, described cushion block test specimen is fixing in an installing hole of said two installing hole, and described female thread test specimen is assemblied in another installing hole of said two installing hole, and pulls and pushes along the hole wall of another installing hole of said two installing hole.
Further, described sound wave axle force measuring instrument, is fixed on by measuring instrument fixture on the end face of screw rod of described bolt.
Further, described bolt is irony or steel bolt, and described measuring instrument fixture includes: magnet piece, and described sound wave axle force measuring instrument is folded between the end face of screw rod of described magnet piece and described bolt.
Further, described measuring instrument fixture includes: have the fixture block of multiple installing hole, is worn the installing hole of described fixture block by fixture, and sandwiched fixes described sound wave axle force measuring instrument between the end face and described fixture block of the screw rod of described bolt.
The embodiment of the present invention also provides for a kind of measuring method adopting helicitic texture described above to turn round the measurement apparatus established unprincipled connection, wherein, and including:
Female thread test specimen is arranged in fixed support；
After bolt to be detected is plugged fixture, it is connected with described female thread test specimen；
Moment of torsion applies structure and is connected after-applied moment of torsion with described bolt, and described bolt is tightened relative to described female thread test specimen and described fixture；
Obtaining the moment of torsion according to torque measurement structure detection and the pretightning force according to the detection of sound wave axle force measuring instrument, the torsion obtained between described moment of torsion and described pretightning force is established unprincipled connection.
Having the beneficial effect that of the technique scheme of the embodiment of the present invention:
In the scheme of the embodiment of the present invention, logical moment of torsion applies structure and applies moment of torsion at the bolt head of bolt, bolt is made to tighten generation screw-down torque relative to female thread test specimen and fixture, torque measurement structure measurement tights a bolt the screw-down torque applied, and when bolt is tightened relative to female thread test specimen and fixture, sound wave axle force measuring instrument measures the pretightning force on bolt, finally can pass through moment of torsion and pretightning force, it is determined that the proportionate relationship between moment of torsion and pretightning force.And the end face of the screw rod of bolt it is arranged on due to this sound wave axle force measuring instrument, the bar of the screw rod being not take up bolt is long, so can to shorter bolt measurement, thus eliminating the restriction to bolt length of the axial force sensor thickness, it is achieved the measurement established unprincipled connection turned round by the helicitic texture that structure is comparatively compact.
Accompanying drawing explanation
The axial force sensor that Fig. 1 is traditional is measured the torsion of pretightning force and is drawn testing machine structure schematic diagram；
The structural representation of measurement apparatus established unprincipled connection turned round by the helicitic texture that Fig. 2 is the embodiment of the present invention；
Fig. 3 is the schematic flow sheet that the measuring method of measurement apparatus established unprincipled connection turned round by the helicitic texture of the embodiment of the present invention.
Description of reference numerals:
101-female thread test specimen, 102-test specimen cushion block, 103-bolt, 104-axial force sensor, 105-tightening piece, 106-torque sensor, 107-motor, 11-bolt, 12-female thread test specimen, 13-cushion block test specimen, 14-sound wave axle force measuring instrument, 15-fixed support, 141-measuring instrument fixture, 21-tightening piece, 22-torque sensor, 23-motor, 24-decelerator, 25-outer corner measurement mechanism.
Detailed description of the invention
For making the technical problem to be solved in the present invention, technical scheme and advantage clearly, it is described in detail below in conjunction with the accompanying drawings and the specific embodiments.
As shown in Figure 2, the measurement apparatus established unprincipled connection turned round by the helicitic texture of the embodiment of the present invention, the bolt 11 (being particularly suited for the shorter bolt of length 11) of major part specification, the measurement apparatus that wherein helicitic texture torsion is established unprincipled connection includes: be provided with the fixed support 15 coordinating the female thread test specimen 12 installed with bolt 11；It is arranged in described fixed support 15, after bolt 11 plugs fixture, the fixture being connected with female thread test specimen 12；Bolt applies moment of torsion, makes the moment of torsion that bolt is tightened relative to female thread test specimen 12 and fixture apply structure；Apply structure with moment of torsion to be connected, for detecting the torque measurement structure of moment of torsion；It is fixed on the end face of screw rod of described bolt 11, for detection when bolt 11 is tightened relative to female thread test specimen 12 and fixture, the sound wave axle force measuring instrument 14 of the pretightning force on bolt 11.
It should be understood that as shown in Figure 2, here female thread test specimen 12 can horizontally slip movement in fixed support 15, but can not rotate in fixed support 15, to ensure that removal can conveniently be dismantled by female thread test specimen 12, can not rotate is prevent female thread test specimen 12 from rotating because bolt 11 rotates, and impact is normal measures.
It can further be stated that: above-mentioned moment of torsion applies structure and is removable installed on bolt 11, is convenient for measuring in process, removing and installing of measured helicitic texture.
In the embodiment of the present invention, apply structure by moment of torsion on the bolt head of described bolt 11, apply moment of torsion, bolt 11 is made to tighten generation screw-down torque relative to female thread test specimen 12 and fixture, torque measurement structure is measured moment of torsion and is applied the moment of torsion of structure, namely measure tight a bolt 11 screw-down torque, and when bolt 11 is tightened relative to female thread test specimen 12 and fixture, sound wave axle force measuring instrument 14 measures the pretightning force on bolt, finally can pass through moment of torsion and pretightning force, it is determined that the proportionate relationship between moment of torsion and pretightning force.And the end face of the screw rod of bolt 11 it is arranged on due to this sound wave axle force measuring instrument 14, the bar of the screw rod being not take up bolt 11 is long, so shorter bolt 11 can be measured, thus eliminating the restriction to bolt 11 length of the axial force sensor thickness, it is achieved the measurement established unprincipled connection turned round by the helicitic texture that structure is comparatively compact.
Preferably, the helicitic texture of the embodiment of the present invention is turned round in the measurement apparatus established unprincipled connection, and described sound wave axle force measuring instrument 14 is ultrasound wave axle force measuring instrument.
In the embodiment of the present invention, ultrasound wave axle force measuring instrument 14 has only to be connected to bolt 11 and carries out the measurement of pretightning force, it is possible to reduce the length requirement to bolt 11.
Preferably, the helicitic texture of the embodiment of the present invention is turned round in the measurement apparatus established unprincipled connection, and described ultrasound wave axle force measuring instrument includes: be arranged on bolt 11 screw rod end face on piezoelectric ceramic piece；
Sound wave generation/receptor that be connected with described piezoelectric ceramic piece, for described piezoelectric ceramic piece applying voltage signal；And
Be arranged on described bolt 11 screw rod end face on, the temperature sensor of the extruder temperature that detects described bolt 11 and be connected with described temperature sensor, the temperature detector of the temperature value that compares acquisition.
In the embodiment of the present invention, a voltage signal is applied by the piezoelectric ceramic piece being pointed on screw rod one end of bolt 11, piezoelectric ceramic piece is made to produce an acoustic signals, acoustic signals is utilized to measure the first length not applying the bolt 11 that pretightning force is tightened, then acoustic signals is utilized to measure the second length applying the bolt 11 that pretightning force is tightened, difference according to the second length, the first length, the change of the spiro rod length of the bolt 11 that variations in temperature causes, and corresponding coefficient of elasticity, calculate the pretightning force obtaining bolt 11.
It should be understood that the first concrete length and the second measurement of length be tight a bolt 11 time, detect the transmitting of sound wave generation/receptor by ultrasound wave axle force measuring instrument and receive ultrasonic interval, measuring the length of bolt 11.
In the embodiment of the present invention, ultrasound wave axle force measuring instrument is used to measure the size of pretightning force in real time, need not additionally installing axial force sensor, cushion block test specimen 13 just can according to the design accordingly of the carrying out of actual helicitic texture and processing simultaneously so that measurement result is more pressed close to real torsion and established unprincipled connection.
In the embodiment of the present invention, when bolt 11 rotates, utilize measuring instrument fixture to fix sound wave axle force measuring instrument 14, make sound wave axle force measuring instrument 14 can accurately measure pretightning force.
The helicitic texture of the embodiment of the present invention is turned round in the measurement apparatus established unprincipled connection, and described moment of torsion applies structure and includes: the motor 23 that the decelerator 24 that the torque measurement structure that the tightening piece 21 being connected on the bolt head of bolt 11 is connected with tightening piece 21 is connected with torque measurement structure is connected with decelerator 24；Wherein, described motor 23 rotates, driving described decelerator 24 to rotate, drive described torque measurement structure, tightening piece 21 and the bolt 11 with tightening piece 21 clamping to rotate relative to female thread test specimen 12 successively, torque measurement structure measurement makes the described moment of torsion that bolt 11 fastens.
It should be understood that described tightening piece 21 is provided with the structure that the bolt head with described bolt 11 coordinates, facilitates cooperating of tightening piece 21 and bolt 11, complete the installation of tightening of bolt 11, and then accurately measure screw-down torque.
Here decelerator 24 may be used for reducing motor 23 rotating speed, motor 23 moment of torsion transmitting simultaneously and amplifying.
It can further be stated that, this tightening piece 21 is removably connected on the bolt head of bolt 11, the installation being not only convenient for measuring in process measured bolt 11 and dismounting, and be also beneficial to regulate tightening piece 21 and be connected with bolt 11, improve the accuracy that moment of torsion applies the force of structure.
The helicitic texture of the embodiment of the present invention is turned round in the measurement apparatus established unprincipled connection, and described torque measurement structure includes: be connected between described decelerator 24 and torque sensor 22, for measuring the outer corner measurement mechanism 25 of the rotational angle of described tightening piece；Described torque sensor, is connected between outer corner measurement mechanism 25 and tightening piece 21, for detecting the moment of torsion of tightening piece 21.
It should be noted that described outer corner measurement mechanism 25 can be angular encoder, to facilitate the measurement to corner.
It can further be stated that: this outer corner measurement mechanism 25 can be separately provided, it is also possible to is wholely set with torque sensor 22, any mode that can realize record bolt 11 rotational angle, belongs to the protection domain of the embodiment of the present invention, and differ a citing at this.
In the embodiment of the present invention, pretightning force measurement is carried out by the ultrasound wave axle force measuring instrument 14 being arranged on the screw rod end face of bolt 11, simultaneously by torque sensor 22 measure tight a bolt 11 screw-down torque, also utilize outer corner measurement mechanism to measure the rotational angle of tightening piece 21, and then the torsion calculating screw thread is established unprincipled connection.
The helicitic texture of the embodiment of the present invention is turned round in the measurement apparatus established unprincipled connection, and described fixture includes: be arranged at the cushion block test specimen 13 between the bolt head of female thread test specimen 12 and bolt 11, and bolt 11 plugs cushion block test specimen 13；And include the fixed support 15 of two installing holes, cushion block test specimen 13 be fixedly mounted in an installing hole of two installing holes fixing in, this female thread test specimen 12 is assemblied in another installing hole of two installing holes, and pulls and pushes along the hole wall of another installing hole of two installing holes.
It should be understood that this female thread test specimen 12 can be nut, it is used for coordinating with bolt 11.This cushion block test specimen 13 can be backing metal, and the metal being used for simulating in actual condition is by casting die, and any metal that can realize in simulation actual thread structure operating mode, by the backing metal of casting die, belongs to the protection domain of the embodiment of the present invention.
It can further be stated that: above-mentioned fixed support 15 can also be integral support, it is also possible to be the second fixed support being separated into the first fixed support and the fixing cushion block test specimen 13 installing female thread test specimen 12.As in figure 2 it is shown, female thread test specimen 12 is assemblied in right side fixed support (that is, the first fixed support of fixed support 15), and support bracket fastened hole wall pulls and pushes along right side, but will not rotate by support bracket fastened hole wall along described right side.All can conveniently realize the installation of bolt 11, and fixed support 15 size is relevant with cushion block test specimen 13, any size that can realize female thread test specimen 12 and the fixing fixed support 15 of cushion block test specimen 13, belong to the protection domain of the embodiment of the present invention.
Also, it should be noted as in figure 2 it is shown, this first fixed support and the second fixed support all can horizontally slip along same axle, it is simple to the connection of tightening piece 21 and bolt 11 head and disengaging, it is simple to the installation of bolt 11 and female thread test specimen 12.
Preferably, the helicitic texture of the embodiment of the present invention is turned round in the measurement apparatus established unprincipled connection, and described sound wave axle force measuring instrument 14 is fixed on by measuring instrument fixture 141 on the end face of screw rod of described bolt 11.
The embodiment of the present invention, makes sound wave axle force measuring instrument 14 position fix by measuring instrument fixture 141, it is prevented that in measurement process, sound wave axle force measuring instrument 14 rocks and affects the accuracy of measurement data.
Preferably, the helicitic texture of the embodiment of the present invention is turned round in the measurement apparatus established unprincipled connection, this bolt 11 is irony and/or steel bolt 11, and described measuring instrument fixture 141 includes: magnet piece, and sound wave axle force measuring instrument 14 is folded between the end face of screw rod of magnet piece and bolt 11.
In the embodiment of the present invention, utilize the material behavior of bolt 11 itself, by magnet piece sandwiched sound wave axle force measuring instrument 14, fix sound wave axle force measuring instrument 14, the simple in construction of such measuring instrument fixture, be also convenient for user trial operation.
Preferably, the helicitic texture of the embodiment of the present invention is turned round in the measurement apparatus established unprincipled connection, described measuring instrument fixture 141 includes: have the fixture block of multiple installing hole, worn the installing hole of this fixture block by fixture, sandwiched fixes this sound wave axle force measuring instrument 14 between the end face and this fixture block of the screw rod of this bolt 11.Wherein, this fixture can be the connectors such as screw, to facilitate connection.
In the embodiment of the present invention, when bolt 11 non-metallic material, it is necessary to by the fixture block of other auxiliary, sound wave axle force measuring instrument 14 is fixed on the screw rod end face of bolt 11, prevent sound wave axle force measuring instrument 14 to rock and the situation that affects measurement, improve the accuracy measured.
It should be noted that the measurement apparatus established unprincipled connection turned round by above-mentioned helicitic texture, it is applied to helicitic texture and turns round the measuring machine established unprincipled connection.
As it is shown on figure 3, the embodiment of the present invention also provides for a kind of adopting helicitic texture described above to turn round the measuring method of measurement apparatus established unprincipled connection, wherein, including:
Step 31, is arranged at female thread test specimen 12 in fixed support 15.
Step 32, after bolt 11 to be detected is plugged fixture, is connected with female thread test specimen 12.
Step 33, moment of torsion applies structure and is connected after-applied moment of torsion with bolt 11, and bolt 11 is tightened relative to female thread test specimen 12 and fixture；
Step 34, obtains the moment of torsion according to torque measurement structure detection and the pretightning force according to the detection of sound wave axle force measuring instrument 14, and the torsion obtained between described moment of torsion and described pretightning force is established unprincipled connection.
It should be understood that in step 34 here, by the moment of torsion obtained and pretightning force, it is possible to use electronic equipment calculates the torsion obtained between moment of torsion and pretightning force and establishes unprincipled connection, and so can accurately obtain torsion and establish unprincipled connection.Wherein, electronic equipment may refer to mobile phone, computer or computer, does not enumerate at this.
In the embodiment of the present invention, apply structure by moment of torsion on the bolt head of described bolt 11, apply moment of torsion, bolt 11 is made to tighten generation screw-down torque relative to female thread test specimen 12 and fixture, torque measurement structure is measured moment of torsion and is applied the moment of torsion of structure, namely measure tight a bolt 11 screw-down torque, and when bolt 11 is tightened relative to female thread test specimen 12 and fixture, sound wave axle force measuring instrument 14 measures the pretightning force on bolt, finally can pass through moment of torsion and pretightning force, it is determined that the proportionate relationship between moment of torsion and pretightning force.And the end face of the screw rod of bolt 11 it is arranged on due to this sound wave axle force measuring instrument 14, the bar of the screw rod being not take up bolt 11 is long, so shorter bolt 11 can be measured, thus eliminating the restriction to bolt 11 length of the axial force sensor thickness, it is achieved the measurement established unprincipled connection turned round by the helicitic texture that structure is comparatively compact.
Utilize Fig. 2 that whole installation is performed process description as follows: first to distinguish moving fixing support 15 (concrete, first fixed support is moved right, the second fixed support is driven to move right, now it is fitted without measuring instrument fixture 141, sound wave axle force measuring instrument 14 and cushion block test specimen 13), then suitable on clamping cushion block test specimen 13 and female thread test specimen 12；Then bolt 11 was plugged cushion block test specimen 13, manually tighted a bolt 11, and stopped tightening before producing pretightning force；Subsequently, use measuring instrument fixture 141 by sound wave axle force measuring instrument 14 clamping on the end face of the screw rod of bolt 11；Subsequently, it is moved to the left fixed support 15 (concrete, first fixed support is moved to the left, the second fixed support, cushion block test specimen 13, bolt 11, female thread test specimen 12, measuring instrument fixture 141 and sound wave axle force measuring instrument 14 is driven to be moved to the left) so that the bolt head of bolt 11 is directed at tightening piece 21 and is connected with tightening piece 21；Finally start motor 23, tightening piece 21 is utilized to tight a bolt 11 (utilizing pretightning force to fasten bolt 11), realizing measuring in real time screw-down torque and the pretightning force of bolt 11, draw the pretightning force variation relation curve with screw-down torque, the torsion obtaining bolt 11 is established unprincipled connection.Being typically in measuring when obtaining measurement result, pretightning force is proportional relation with the variation relation of screw-down torque.
Accordingly, owing to the measuring method of the measurement apparatus established unprincipled connection turned round by the helicitic texture described above that adopts of the embodiment of the present invention, it is applied to helicitic texture and turns round the measurement apparatus established unprincipled connection, therefore above-mentioned helicitic texture is turned round the embodiment of the described measuring method realizing the measurement apparatus that embodiment is all established unprincipled connection suitable in this employing helicitic texture torsion described above of the measurement apparatus established unprincipled connection, and also can reach identical technique effect.
The above is the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from principle of the present invention; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. the measurement apparatus established unprincipled connection turned round by helicitic texture, is applied to bolt (11), it is characterised in that described helicitic texture is turned round the measurement apparatus established unprincipled connection and included:
Fixed support (15), coordinates the female thread test specimen (12) installed to be arranged in described fixed support (15) with described bolt (11)；
Fixture, is arranged in described fixed support (15), wherein, after described bolt (11) plugs described fixture, is connected with described female thread test specimen (12)；
Moment of torsion applies structure, applies structure for described moment of torsion and applies moment of torsion on described bolt (11), makes described bolt (11) tighten relative to described female thread test specimen (12) and described fixture；
Torque measurement structure, applies structure with described moment of torsion and is connected, be used for detecting described moment of torsion；
Sound wave axle force measuring instrument (14), it is fixed on the end face of screw rod of described bolt (11), described sound wave axle force measuring instrument (14) is used for detection when described bolt (11) is tightened relative to described female thread test specimen (12) and described fixture, the pretightning force on described bolt (11).
2. the measurement apparatus established unprincipled connection turned round by helicitic texture as claimed in claim 1, it is characterised in that
Described sound wave axle force measuring instrument (14) is ultrasound wave axle force measuring instrument.
3. the measurement apparatus established unprincipled connection turned round by helicitic texture as claimed in claim 2, it is characterised in that
Described ultrasound wave axle force measuring instrument (14) including: be arranged on described bolt (11) screw rod end face on piezoelectric ceramic piece；
Sound wave generation/receptor that be connected with described piezoelectric ceramic piece, for described piezoelectric ceramic piece applying voltage signal；And
Be arranged on described bolt (11) screw rod end face on, the temperature sensor of the extruder temperature that detects described bolt (11) and be connected with described temperature sensor, the temperature detector of the temperature value that compares acquisition.
4. the measurement apparatus established unprincipled connection turned round by the helicitic texture as described in any one of claims 1 to 3, it is characterised in that
Described moment of torsion applies structure and includes: the moment of torsion of the bolt head being connected in described bolt (11) applies structure tightening piece (21)；
The torque measurement structure being connected with described tightening piece (21)；
The decelerator (24) being connected with described torque measurement structure；
The motor (23) being connected with described decelerator (24)；Wherein,
Described motor (23) rotates, described decelerator (24) is driven to rotate, driving described torque measurement structure, described tightening piece (21) successively and rotate relative to described female thread test specimen (12) with the described bolt (11) of described tightening piece (21) clamping, described torque measurement structure measurement makes the described moment of torsion that described bolt (11) fastens.
5. the measurement apparatus established unprincipled connection turned round by helicitic texture as claimed in claim 4, it is characterised in that
Described torque measurement structure includes: outer corner measurement mechanism (25), is connected between described decelerator (24) and torque sensor (22), is used for measuring the rotational angle of described tightening piece (21)；
Described torque sensor (22), is connected between described outer corner measurement mechanism (25) and described tightening piece (21), is used for detecting the moment of torsion of described tightening piece (21).
6. the measurement apparatus established unprincipled connection turned round by the helicitic texture as described in any one of claims 1 to 3, it is characterised in that
Described fixture includes: cushion block test specimen (13), is used for plugging described bolt；
Described fixed support (15), including two installing holes, described cushion block test specimen (13) is fixing in an installing hole of said two installing hole, described female thread test specimen (12) is assemblied in another installing hole of said two installing hole, and pulls and pushes along the hole wall of another installing hole of said two installing hole.
7. the measurement apparatus established unprincipled connection turned round by the helicitic texture as described in any one of claims 1 to 3, it is characterized in that, described sound wave axle force measuring instrument (14), is fixed on by measuring instrument fixture (141) on the end face of screw rod of described bolt (11).
8. the measurement apparatus established unprincipled connection turned round by helicitic texture as claimed in claim 7, it is characterised in that
Described bolt (11) is irony or steel bolt, described measuring instrument fixture (141) including: magnet piece, and described sound wave axle force measuring instrument (14) is folded between the end face of screw rod of described magnet piece and described bolt (11).
9. the measurement apparatus established unprincipled connection turned round by helicitic texture as claimed in claim 7, it is characterised in that
Described measuring instrument fixture (141) including: has the fixture block of multiple installing hole, worn the installing hole of described fixture block by fixture, sandwiched fixes described sound wave axle force measuring instrument (14) between the end face and described fixture block of the screw rod of described bolt (11).
10. the measuring method of the measurement apparatus that the helicitic texture torsion that a kind adopts as described in any one of claim 1 to 9 is established unprincipled connection, it is characterised in that including:
Female thread test specimen (12) is arranged in fixed support (15)；
After bolt (11) to be detected is plugged fixture, it is connected with described female thread test specimen (12)；
Moment of torsion applies structure and is connected after-applied moment of torsion with described bolt (11), and described bolt (11) is tightened relative to described female thread test specimen (12) and described fixture；
Obtaining the moment of torsion according to torque measurement structure detection and the pretightning force detected according to sound wave axle force measuring instrument (14), the torsion obtained between described moment of torsion and described pretightning force is established unprincipled connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610183179.8A CN105784249B (en) | 2016-03-28 | 2016-03-28 | A kind of measuring device and measuring method that helicitic texture torsion is established unprincipled connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610183179.8A CN105784249B (en) | 2016-03-28 | 2016-03-28 | A kind of measuring device and measuring method that helicitic texture torsion is established unprincipled connection |
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| Publication Number | Publication Date |
|---|---|
| CN105784249A true CN105784249A (en) | 2016-07-20 |
| CN105784249B CN105784249B (en) | 2019-01-29 |
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| CN201610183179.8A Active CN105784249B (en) | 2016-03-28 | 2016-03-28 | A kind of measuring device and measuring method that helicitic texture torsion is established unprincipled connection |
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| CN107314895A (en) * | 2017-07-05 | 2017-11-03 | 深圳市樊溪电子有限公司 | The rotation detection device and detection method of a kind of wind-powered electricity generation structure stud |
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| CN108151947A (en) * | 2017-12-26 | 2018-06-12 | 北京理工大学 | The caliberating device and scaling method of a kind of pretightning force and elongation |
| CN108458825A (en) * | 2018-02-28 | 2018-08-28 | 易克威系统株式会社 | The axial force and friction torque measuring device of screw and the measurement method for utilizing the device |
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| CN106706281A (en) * | 2016-09-28 | 2017-05-24 | 温州冶金机械测试研究所 | Detecting instrument used for detecting reasonable assembly torque of fastener and testing method |
| CN107314895A (en) * | 2017-07-05 | 2017-11-03 | 深圳市樊溪电子有限公司 | The rotation detection device and detection method of a kind of wind-powered electricity generation structure stud |
| CN107314895B (en) * | 2017-07-05 | 2018-10-09 | 福州市长乐区三互信息科技有限公司 | A kind of rotation detection device and detection method of wind-powered electricity generation structure stud |
| CN107957310A (en) * | 2017-11-20 | 2018-04-24 | 上海宏予测试仪器有限公司 | A kind of measuring device for oil connection threaded fastener |
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| CN108151947A (en) * | 2017-12-26 | 2018-06-12 | 北京理工大学 | The caliberating device and scaling method of a kind of pretightning force and elongation |
| WO2019153138A1 (en) * | 2018-02-07 | 2019-08-15 | 大连理工大学 | Real-time high-precision bolt preload detection method and system employing piezoelectric ultrasonic chip |
| US11131579B2 (en) | 2018-02-07 | 2021-09-28 | Dalian University Of Technology | Piezoelectric patch-based real-time and high-precision bolt preload detection method and system |
| CN108458825A (en) * | 2018-02-28 | 2018-08-28 | 易克威系统株式会社 | The axial force and friction torque measuring device of screw and the measurement method for utilizing the device |
| CN109341928B (en) * | 2018-12-12 | 2023-09-05 | 江苏徐工工程机械研究院有限公司 | Bolt pretightening force measuring device and method |
| CN109341928A (en) * | 2018-12-12 | 2019-02-15 | 江苏徐工工程机械研究院有限公司 | Tools for bolts ' pretension force measuring device and method |
| CN109443737A (en) * | 2018-12-24 | 2019-03-08 | 上海天檀电子科技有限公司 | A kind of torque test device |
| CN109854875A (en) * | 2019-01-07 | 2019-06-07 | 中国工程物理研究院总体工程研究所 | Sensor pre-pressing structure based on external pressure mode |
| CN109820568A (en) * | 2019-02-19 | 2019-05-31 | 深圳市世格赛思医疗科技有限公司 | A kind of pretightning force applying method, the apparatus and system of piezoelectric ceramic ultrasonic transducer |
| CN111912559A (en) * | 2019-05-10 | 2020-11-10 | 现代自动车株式会社 | Device and method for measuring axial force of bolt |
| CN110285913A (en) * | 2019-07-19 | 2019-09-27 | 青岛四方庞巴迪铁路运输设备有限公司 | Bolt capable of detecting axial force of bolt and detection method thereof |
| CN110926931A (en) * | 2019-12-25 | 2020-03-27 | 中国航空工业集团公司西安飞机设计研究所 | Torsion-tension relation measuring device and method for airplane hinge structure |
| CN110926931B (en) * | 2019-12-25 | 2023-01-13 | 中国航空工业集团公司西安飞机设计研究所 | Torsion-tension relation measuring device and method for airplane hinge structure |
| CN112227208A (en) * | 2020-09-23 | 2021-01-15 | 中铁大桥局集团有限公司 | Monitoring and forecasting method for construction period and operation period of suspension bridge cable clamp screw |
| CN112763167A (en) * | 2020-12-31 | 2021-05-07 | 上海奥达科股份有限公司 | Method for confirming rigidity of bolt connected piece |
| CN113188706A (en) * | 2021-04-15 | 2021-07-30 | 一汽奔腾轿车有限公司 | Device and method for measuring torque angle of knob |
| CN113533082A (en) * | 2021-06-17 | 2021-10-22 | 东南大学 | Torque coefficient measuring device and torque coefficient measuring method |
| CN113654704A (en) * | 2021-08-17 | 2021-11-16 | 山西平阳重工机械有限责任公司 | Method for testing relation between pretightening force and torque of threaded fastener |
| CN116818306A (en) * | 2023-07-11 | 2023-09-29 | 长春仟邦测试设备有限公司 | Pipe joint torsion-pull relation and friction coefficient measuring method |
| CN116818306B (en) * | 2023-07-11 | 2024-03-15 | 长春仟邦测试设备有限公司 | Pipe joint torsion-pull relation and friction coefficient measuring method |
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