CN109724742A - A method of it is measured for bolt axial force - Google Patents
A method of it is measured for bolt axial force Download PDFInfo
- Publication number
- CN109724742A CN109724742A CN201910035536.XA CN201910035536A CN109724742A CN 109724742 A CN109724742 A CN 109724742A CN 201910035536 A CN201910035536 A CN 201910035536A CN 109724742 A CN109724742 A CN 109724742A
- Authority
- CN
- China
- Prior art keywords
- bolt
- axial force
- calibration
- ultrasonic
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention belongs to threaded fastener experimental technique field, it is related to a kind of method for bolt axial force measurement, comprising the following steps: the calibration curve between 1, the transit-time of ultrasonic increment and axle power of the bolt for calibrating by frock clamp calibration；2, the transit-time of ultrasonic incremental data of practical set bolt is measured in practical set；3, the transit-time of ultrasonic incremental data of practical set bolt is compared with calibration curve, obtains the axle power of practical set bolt.The present invention can avoid damage to connected piece to generate waste, while can guarantee the unification of tightening device when calibration and assembly, avoid systematic error to obtain more accurate test data；In addition it can realize by adjusting the combination of fixture to the calibration of the bolt of different size, connection length, accurate calibration curve is help to obtain to support product design.Structure is simple, easy to assembly, and interchangeability is good, easy to operate.
Description
Technical field
The invention belongs to threaded fastener experimental technique fields, are related to a kind of method for bolt axial force measurement, specifically
Ground is related to a kind of axle power measurement method using ultrasonic propagation time and adjustable connection length calibration tooling.
Background technique
Threaded connection is one of most common connection type between auto parts and components, and the purpose is to make to be connected part holding
Together and external force caused by union piece can be overcome, have many advantages, such as that precision is high, easy to assembly, part dismounting is convenient, because
This, assembling the essence tightened is to control the axial pre tightening force of bolt in range appropriate.From assembly method by torque normal direction
Torque-corner method, yield point method and axle power method development course it is found that the development trend of assembly tool and tightening method be exactly from
The process directly controlled to axle power is indirectly controlled to axle power using torque.
The lower limit of axial pre tightening force is determined by the function of connection structure, which must assure that connected piece in work
Always reliable fitting during making.The upper limit of axial pre tightening force is determined by the intensity of bolt (nut) and connected piece, should
Upper limit value must assure that bolt and connected piece do not destroy during preload and military service.Bolt axial direction Prestress design
Height be that horizontal comprehensive of product design and material technology embodies.
In the design of threaded connection, in addition to carrying out theoretical calculation and software sunykatuib analysis to the stress of connection, using super
Sound wave carries out verification experimental verification to the axle power of bolt and is presently the most common and effective mode, surveys because it can be realized axle power static state
Amount and dynamic are monitored and are widely used in the industrial production.But the important ring of power measurement is clamped using ultrasonic wave
Section is to need to demarcate to obtain average calibration curve same batch experiment bolt before measuring.At present mostly use special equipment into
The horizontal independent calibration of row is demarcated using a part of gasket type sensor and connected part.Both methods is not only grasped
Make that inconvenient, experimentation cost is very high, needs to destroy and is connected part, and there are calibration facilities and practical tightening device disunity to cause
Systematic error problem.By consulting a large amount of data at home and abroad, not yet found in the measurement test of ultrasonic wave clamping force at present, mark
Surely the effective tooling and method of bolt are tested.
A kind of hexagon-headed bolt fastener shaft force checking device, including set are disclosed in patent document 1 (CN1068255790A)
Cylinder, carrying cushion block, sleeve sensors and sensor display.Hexagon-headed bolt fastener shaft force checking device in the invention, knot
Structure is simple, reasonable, adapts to the fastening axle power measurement of different length hexagon-headed bolts；But the invention is confined to hexagon-headed bolt,
And it cannot be used for the alignment measurement of real work occasion.It is disclosed in patent document 2 (202560875U) a kind of for bolt axle
Power measurement fixation device and bolt axial force measuring device, for bolt axial force measurement fixation device include screw head fixing piece and
Screw rod fixing piece.The fixation device that this utility model provides is capable of fixing the screw head and screw rod of bolt, surveys when using stretching-machine etc.
When amount device stretches fixed device, the drawing effect of the bolt in bolt assembling process can be simulated.Measurement dress in the literature
Setting can be using ultrasonic measurement axle power technology, but can not simulate and measure the axle power for being assembled to the bolt of bolt yield point or more.
A kind of dress of measurement high-strength big six-angle spiral auxiliary connection fastening axle power is disclosed in patent document 3 (CN106011520A)
It sets, offers the bottom plate of square hole, the sleeve being installed on bottom plate including center, may be disposed at strain inductance loop on sleeve, right
Claim the foil gauge for being attached on strain inductance loop two sides outer wall and connecting deformeter.Axle power is measured in the literature to need using strain
Piece, it is complicated for operation, and cannot be used for the alignment measurement of real work occasion.
The present invention is mainly a kind of method for bolt axial force measurement.The present invention is based on utilize ultrasonic measurement bolt axle
The principle of power, by using frock clamp, is realized to test spiral shell under the premise of not changing assembly tightening device and tested parts
The calibration and measurement operation of bolt.The present invention can solve test bolt shape in document 1 and be limited to, it is impossible to be used in real work field
Alignment measurement problem；It can be to avoid can not simulate and measure the axle power for being assembled to the bolt of yield point or more in document 2
Problem；It can solve complicated for operation in document 3, it is impossible to be used in the alignment measurement problem in real work place.The present invention has knot
Structure is simple, easy to assembly, interchangeability is good, at low cost, operating method flexible and convenient, the system that can reduce or avoid distinct device are missed
The advantages that difference and saving test specimen, is advantageous to apply the work being threadedly coupled clamping force using ultrasonic measurement
In, be conducive to the promotion of assembling quality.
Summary of the invention
In order to overcome the above problem, the method that the purpose of the present invention is to provide a kind of to measure for testing bolt axial force,
It can avoid damage to connected piece to generate waste, while can guarantee the unification of tightening device when calibration and assembly, avoid
Systematic error is to obtain more accurate test data；It is mutual in addition it can the combination by adjusting gasket, chuck and nut clamp
The calibration for realizing the test bolt to different size, different connection lengths is changed, help to obtain accurate calibration curve to support
Product design.
A method of it is measured for bolt axial force, comprising the following steps:
Step 1: by frock clamp calibrate the bolt of calibration transit-time of ultrasonic increment and axle power it
Between calibration curve；
Step 2: the transit-time of ultrasonic incremental data of practical set bolt is measured in practical set；
Step 3: by the transit-time of ultrasonic incremental data and step of the practical set bolt measured in step 2
Calibration curve in one compares, and obtains the axle power of practical set bolt.
Frock clamp described in technical scheme steps one is made of following six part: adjustment gasket, chuck, nut clip
Tool, support plate, support rod, shape block；
Adjustment gasket is placed in the slot on chuck fixed；Nut clamp setting is in axial force sensor side, axle power sensing
Device is arranged between chuck, support plate；Support rod both ends process screw thread and by the screw thread at both ends respectively with support plate and shape block
Connection.
Adjusting pad on piece processes through-hole in technical solution, and is designed as having 8~25mm different-thickness, 5~15 different holes
The combination of number, 6.6~φ of φ, 26 different pore size.
The groove of the processing of chuck upper surface described in technical solution and adjustment gasket a equivalent width, at center and and axle power
The corresponding position in sensor threads hole processes through-hole, and be designed as having 10~30mm different-thickness, 30~50mm difference groove width,
The combination of the different center bores of 6.6~φ of φ 26.
Chuck described in technical solution is placed on axial force sensor side and is reliably connected using screw or other modes, is used
In carrying and fixed adjusting pad piece a.
Nut clamp side described in technical solution processing with test the consistent groove of nut across flats, center and with
The corresponding position of axial force sensor positioning pin processes through-hole, and is designed as having 25~35mm different-thickness, 10~36mm different
The combination of the different center bores of groove width, 6.6~φ of φ 26.
Nut clamp described in technical solution is placed on the axial force sensor other side and is reliably connected using screw, for solid
Surely it tests nut and transmits clamping force and torque.
Support plate center described in technical solution processes through-hole, processes spiral shell in position corresponding with axial force sensor location hole
Pit is processed and the consistent through-hole of support rod threaded portion on the outside；
The support plate upper surface and axial force sensor are reliably connected by screw；Bottom surface is connect with support rod, for holding
Carry axial force sensor；
The support rod both ends process screw thread and are connect respectively with support plate and shape block by the screw thread at both ends, for carrying
Support plate and component connected to it；
Shape block center machining internal thread hole, and connect by internal thread hole with support rod, for a whole set of tooling to be consolidated
It is scheduled on testing stand or iron floor.
The bolt of calibration described in technical solution is same batch with practical set bolt and both ends are processed as parallel put down
The bolt in face；
The bolt of the calibration connects that be bolted length with practical set identical.
Ultrasonic propagation time increment described in technical solution and the calibration curve of axle power are the bolts of multiple calibration
Ultrasonic propagation time increment and axle power between relation curve polynomial fitting curve.
Compared with prior art the beneficial effects of the present invention are:
(1) structure is simple, easy to assembly, and interchangeability is good, operating method flexible and convenient；
(2) at low cost；
(3) it can reduce or avoid the systematic error of distinct device, save test specimen.
Detailed description of the invention
The present invention will be further described below with reference to the drawings:
Fig. 1 is the bolt calibration installation front view in a kind of method for bolt axial force measurement of the present invention；
Fig. 2 is the bolt calibration installation bottom view in a kind of method for bolt axial force measurement of the present invention；
Fig. 3 is the calibration curve in a kind of method for bolt axial force measurement of the present invention；
In figure:
A is adjustment gasket；B is chuck；C is nut clamp；D is support plate；E is support rod, and f is T-shaped block.
Specific embodiment
The present invention is explained in detail with reference to the accompanying drawing:
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
The present invention is a kind of method for bolt axial force measurement, comprising: the ultrasound of bolt is calibrated by frock clamp
Calibration curve between wave signal propagation time increment and axle power；When measuring the ultrasonic signal propagation of bolt in practical set
Between incremental data；To obtain bolt axial force, data are compared with calibration curve.
The feature of the frock clamp of calibration in the present invention are as follows: by adjustment gasket a, chuck b, nut clamp c, support plate d,
Six parts such as support rod e, shape block f composition.
Through-hole is processed on adjustment gasket a, and is designed as with different-thickness (8~25mm), different hole count (5~15), no
The combination of same aperture (6.6~φ of φ 26)；
With a thickness of the thickness of gasket a, hole count is aperture number on gasket, the two parameters can be any group in range
It closes, aperture is the aperture of institute's aperture, needs to be selected according to the diameter of bolt, otherwise thick bolt wears only gasket.
Adjustment gasket a, which is placed in the slot on chuck b, to be fixed, when for adjusting threaded connection length and as tightening bolt
Supporting surface；
The groove of the processing of the upper surface chuck b and adjustment gasket a equivalent width passes at the center of chuck b groove and with axle power
The corresponding position of sensor threaded hole processes through-hole, and be designed as with different-thickness (10~30mm), different groove widths (30~
50mm), the combination of different center bores (6.6~φ of φ 26)；
Chuck b is placed on axial force sensor side and is reliably connected using screw or other modes, for carrying and fixing
Adjust gasket a；
The side nut clamp c processing with test the consistent groove of nut across flats, nut clamp c groove center and
Position corresponding with axial force sensor positioning pin processes through-hole, and is designed as with different-thickness (25~35mm), different groove widths
The combination of (10~36mm), different center bores (6.6~φ of φ 26)；
When tightening bolt nut be possible to can and bolt rotate together, nut clamp c is just also possible to transfer, on sensor
Nut clamp c is blocked equipped with a positioning pin, dowel hole is in the outer rim of nut clamp c, and positioning pin is primarily to fixed
Fixture prevents clamp movement.
Here thickness, groove width and center bore is the collocation of tri- sizes of nut clamp c, and different-thickness is to protect
Different connection lengths is simulated under conditions of card fixture intensity, because the small bolt of specification can use thinner fixture, and specification
Big bolt is with regard to a bit handy thick fixture, and groove width and aperture will correspond to the diameter of bolt and the opposite side distance of nut, institute
Combination with these sizes be in order to adapt to bolt of different specifications and sizes, just to process a large amount of fixture is able to satisfy different size
The test of bolt；
These three fixtures are that have a respective combination, but when test, once it is determined that the bolt to be tested
After size, center bore has determined that the consistent sleeve clamp in these three apertures is selected to be tested
Nut clamp c is placed on the axial force sensor other side and is reliably connected using screw or other modes, for fixing
Test nut simultaneously transmits clamping force and torque；
The center support plate d processes through-hole, in position corresponding with sensor location hole thread mill drilling, on the outside processing with
The consistent through-hole of support rod e threaded portion；The upper surface support plate d is reliably connected with axial force sensor by screw or other modes
It connects；Bottom surface is connect with support rod e, for carrying sensor；
Axial force sensor is between chuck b, support plate d, when being tested, can rotate when bolt is tightened, these are pressed from both sides
Tight sensor, chuck, fixture require to be mutually permanently connected to set on axial force sensor to keep the stabilization of entire connection structure
Have for fixing the location hole for itself arriving support plate, also is provided with also being provided with for the positioning pin of fixture nut fixture for positioning
The location hole of chuck can be just connected to each other in this way.
The both ends support rod e processing screw thread is simultaneously connect with support plate d and shape block f by the screw thread at both ends respectively, for carrying
Support plate d and component connected to it；
The center shape block f machining internal thread hole, and connect by internal thread hole with support rod, for a whole set of tooling to be fixed on
On testing stand or iron floor.
The bolt of heretofore described calibration and the bolt of practical set are same batch and both ends be processed as it is parallel
The bolt of plane.
The bolt of calibration, refers to the same batch of selection and both ends are processed as plane-parallel bolt, is mounted on calibration folder
Bolt on tool (most comprising adjustment gasket a, chuck b, nut clamp c, support plate d, support rod e, shape block f six)；
Practical set bolt, referring to connected piece all is real vehicle exemplar, and all conditions are all consistent with Product Status, used
Bolt, and from same batch and both ends be processed as in plane-parallel bolt select use.
The bolt connection of heretofore described calibration is identical as the bolt connection of practical set.
The relation curve of heretofore described ultrasonic propagation time increment and axle power is that the ultrasonic wave of multiple bolts passes
Broadcast the polynomial fitting curve of the relation curve between incremental time and bolt axial force.
Bolt cannot be reused after tightening once, therefore cannot be guaranteed the complete phase of bolt state tightened every time
Together, can only with it is a batch of guarantee as far as possible it is identical.
Fitting is carried out curve fitting with least square method.
As shown in FIG. 1 to 3, a kind of to be demarcated for being threadedly coupled test bolt in clamping force work using ultrasonic measurement
Tooling, be made of 6 parts such as adjustment gasket a, chuck b, nut clamp c, support plate d, support rod e, shape block f.
Refering to fig. 1, a is adjustment gasket, for adjusting threaded connection length and as supporting surface when tightening bolt.
B is chuck, is connect with sensor, and fixed adjusting pad piece is used for.
Referring to Fig.2, c is nut clamp, it is connect with sensor, for fixed test nut and transmits clamping force and torque.
D is support plate, is connect with sensor and support rod, for carrying sensor.
E is support rod, is connect with support plate and T-shaped block, for carrying support plate and component connected to it.
F is T-shaped block, is connect with support rod, for a whole set of tooling to be fixed on testing stand or iron floor.
In operation, support rod e threaded one end should be screwed into the internal thread hole of T-shaped block f, and with being inserted into testing stand or iron
It is fixed in plate；And the support rod e other end is threaded into support plate d and reliably tightens fixation；By nut clamp c and card
Disk b by screw or other be reliably connected in the way of be connected on sensor after, sensor is connected on support plate d；It will adjustment
Gasket a is placed in the groove in chuck b；Bolt is penetrated and is tightened with the nut being fixed in nut clamp c, i.e., it is available
Assembly tool realizes the calibration process of test bolt.
The calibration curve between the transit-time of ultrasonic increment of bolt and axle power is calibrated by frock clamp,
Data are compared with calibration curve, obtain reality by the transit-time of ultrasonic incremental data that bolt is measured in practical set
Bolt axial force in the assembly of border.
Embodiment is the characteristics of the present invention is furture elucidated, the limitation present invention is not equal to, for those skilled in the art
The change that member carries out according to the present invention, should all be included in the protection scope of the present invention.
Embodiment
Critical positions connection is needed in product development process to design assembly torque according to axle power or to known assembly
Torque is verified, and by taking the bolt of M10 × 1.5 as an example, carries out the measurement of practical set axle power using the method for the present invention, test includes
Following steps:
1) frock clamp for demarcating bolt is installed, support rod e threaded one end is screwed into the internal thread hole of shape block f
It is interior, and be inserted into testing stand or iron floor fixed；And the support rod e other end is threaded into support plate d and is reliably twisted
It fastens；
By nut clamp c and chuck b by screw or other be reliably connected in the way of be connected on axial force sensor after, by axis
Force snesor is connected on support plate d；
Adjustment gasket a is placed in the groove in chuck b；By bolt penetrate and with the spiral shell that is fixed in nut clamp c
Mother tightens；
2) from same batch and both ends are processed as selecting bolt in plane-parallel bolt, bolt progress surface is added
Work as the bolt of calibration, and sticks ceramic ultrasonic wave patch, is believed so as to subsequent using ultrasonic sensor acquisition ultrasonic wave
Number, the bolt of calibration is tightened using the frock clamp that assembly tool and step 1) are installed, is adopted with ultrasonic sensor
The transit-time of ultrasonic incremental data for collecting the bolt of calibration, with the axle power of the bolt of axial force sensor acquisition calibration
Data, by data preparation at the calibration curve between transit-time of ultrasonic increment and axle power, refering to Fig. 3, horizontal seat in figure
Be designated as the time, unit: nSec (nanometer second), ordinate are axle power, unit: kN (thousand Ns)；
3) from same batch and both ends are processed as selecting bolt in plane-parallel bolt, as practical set bolt,
The transit-time of ultrasonic incremental data of practical set bolt is measured in practical set.
(axis is added in connection system because if to measure bolt axial force in practical set and need to destroy connection status
Force snesor), it will lead to the differences such as connection system stiffness, connection length, the axle power for the bolt surveyed may be with actual product
It is different, so to cancel the axial force sensor in connection system, and ultrasonic sensor is located in bolt head,
It cannot participate in connection system, so will not influence the rigidity of connection system, connection length etc., and ultrasonic sensor can not
The axle power of directly measurement bolt can only receive ultrasonic signal, therefore ultrasonic wave be passed with identical bolt during the calibration process
The time passed and axle power establish connection, when can be transmitted in this way with ultrasonic wave when not having axial force sensor in practical set
Between measured indirectly.
4) the transit-time of ultrasonic incremental data of the practical set bolt in step 3) and step 2) is resulting
Compared with " calibration curve of the transit-time of ultrasonic increment between axle power ", the axle power of practical set bolt is obtained；
Compared with calibration curve of the transit-time of ultrasonic increment between axle power ", it is super to refer to that practical set is measured
Acoustic signals propagation time increment is X, removes on this calibration curve to go for corresponding axis when transit-time of ultrasonic increment is X
Power Y.
It is that axial force sensor is placed in no space and position in product, still because practical set is exactly Product Status
Ultrasonic sensor can be placed in bolt end, therefore find the relationship of ultrasonic wave and axle power by calibration curve, existed in this way
Ultrasonic wave is measured on product just can know that axle power.
5) assembling test measurement axle power is carried out to a batch of bolt using gasket type sensor, by test result and led to
It crosses the data that the present invention measures to compare, as a result such as table 1.
This result demonstrates this method error or precision is in acceptable range.
1 two kinds of measurement method measurement result comparisons of table
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of method for bolt axial force measurement, which comprises the following steps:
Step 1: it is calibrated between the transit-time of ultrasonic increment of the bolt of calibration and axle power by frock clamp
Calibration curve；
Step 2: the transit-time of ultrasonic incremental data of practical set bolt is measured in practical set；
Step 3: will be in the transit-time of ultrasonic incremental data for the practical set bolt that measured in step 2 and step 1
Calibration curve compare, obtain the axle power of practical set bolt.
2. a kind of method for bolt axial force measurement according to claim 1, it is characterised in that:
Frock clamp described in step 1 is made of following six part: adjustment gasket, chuck, nut clamp, support plate, branch
Strut, shape block；
Adjustment gasket is placed in the slot on chuck fixed；Nut clamp is arranged in axial force sensor side, and axial force sensor is set
It sets between chuck, support plate；Support rod both ends processing screw thread is simultaneously connect with support plate and shape block by the screw thread at both ends respectively.
3. a kind of method for bolt axial force measurement according to claim 2, it is characterised in that:
The adjusting pad on piece processes through-hole, and be designed as having 8~25mm different-thickness, 5~15 different hole counts, φ 6.6~
The combination of 26 different pore size of φ.
4. a kind of method for bolt axial force measurement according to claim 2, it is characterised in that:
The groove of chuck upper surface processing and adjustment gasket equivalent width, at center and corresponding with axial force sensor threaded hole
Position process through-hole, and be designed as having 10~30mm different-thickness, 30~50mm difference groove width, 6.6~φ of φ 26 different
The combination of center bore.
5. a kind of method for bolt axial force measurement according to claim 2, it is characterised in that:
The chuck is placed on axial force sensor side and is reliably connected using screw or other modes, for carrying and fixing tune
Whole gasket.
6. a kind of method for bolt axial force measurement according to claim 2, it is characterised in that:
The nut clamp side processing and the test consistent groove of nut across flats, position at center and with axial force sensor
Corresponding position processing through-hole is sold, and is designed as that there is 25~35mm different-thickness, 10~36mm difference groove width, 6.6~φ of φ
The combination of 26 different center bores.
7. a kind of method for bolt axial force measurement according to claim 2, it is characterised in that:
The nut clamp is placed on the axial force sensor other side and is reliably connected using screw, for fixed test nut and is passed
Pass clamping force and torque.
8. a kind of method for bolt axial force measurement according to claim 2, it is characterised in that:
The support plate center processes through-hole, in position corresponding with axial force sensor location hole thread mill drilling, on the outside plus
Work and the consistent through-hole of support rod threaded portion；
The support plate upper surface and axial force sensor are reliably connected by screw；Bottom surface is connect with support rod, is used for carrying axle
Force snesor；
The support rod both ends process screw thread and are connect respectively with support plate and shape block by the screw thread at both ends, for carrying support
Plate and component connected to it；
Shape block center machining internal thread hole, and connect by internal thread hole with support rod, for a whole set of tooling to be fixed on
On testing stand or iron floor.
9. a kind of method for bolt axial force measurement according to claim 1, it is characterised in that:
The bolt and practical set bolt of the calibration are same batch and both ends are processed as plane-parallel bolt；
The bolt of the calibration connects that be bolted length with practical set identical.
10. a kind of method for bolt axial force measurement according to claim 1, it is characterised in that:
When the calibration curve of the ultrasonic propagation time increment and axle power is that the ultrasonic wave of the bolt of multiple calibration is propagated
Between relation curve between increment and axle power polynomial fitting curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910035536.XA CN109724742A (en) | 2019-01-15 | 2019-01-15 | A method of it is measured for bolt axial force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910035536.XA CN109724742A (en) | 2019-01-15 | 2019-01-15 | A method of it is measured for bolt axial force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109724742A true CN109724742A (en) | 2019-05-07 |
Family
ID=66298299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910035536.XA Pending CN109724742A (en) | 2019-01-15 | 2019-01-15 | A method of it is measured for bolt axial force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109724742A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111473897A (en) * | 2020-04-02 | 2020-07-31 | 上海奥达科股份有限公司 | Calibration and correction method for short-tail rivet |
| CN112461429A (en) * | 2020-11-10 | 2021-03-09 | 西南交通大学 | Ultrasonic pretightening force measurement method for low-elasticity-modulus material bolt |
| 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 |
| CN114577394A (en) * | 2022-03-04 | 2022-06-03 | 北京理工大学 | Bolt fastening axial tensile stress detection calibration method and device |
| CN115507989A (en) * | 2022-08-22 | 2022-12-23 | 中国第一汽车股份有限公司 | Device and method for measuring axial force of connecting bolt of steering knuckle and hub bearing |
| EP4206636A4 (en) * | 2020-08-25 | 2024-10-09 | Suzhou Phaserise Technology Co., Ltd. | Method for quick calibration and measurement of axial forces of high-strength bolts by transverse and longitudinal ultrasonic waves |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060526A (en) * | 1990-08-27 | 1992-04-22 | 伊安·E·基布尔怀特 | Ultrasonic load indicator with sensor |
| CN203132829U (en) * | 2013-02-26 | 2013-08-14 | 中国第一汽车股份有限公司 | Crankshaft component bolt assembling test fixing device |
| CN205981525U (en) * | 2016-07-19 | 2017-02-22 | 宝沃汽车（中国）有限公司 | Stud shaft power equipment of tracing to source |
| CN207215330U (en) * | 2017-08-28 | 2018-04-10 | 北京汽车股份有限公司 | Vehicle fastener is fastenedly connected test system |
| CN108572040A (en) * | 2018-04-23 | 2018-09-25 | 北京交通大学 | A detection method, detection system and detection device for axial force of bolts in service |
-
2019
- 2019-01-15 CN CN201910035536.XA patent/CN109724742A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060526A (en) * | 1990-08-27 | 1992-04-22 | 伊安·E·基布尔怀特 | Ultrasonic load indicator with sensor |
| CN203132829U (en) * | 2013-02-26 | 2013-08-14 | 中国第一汽车股份有限公司 | Crankshaft component bolt assembling test fixing device |
| CN205981525U (en) * | 2016-07-19 | 2017-02-22 | 宝沃汽车（中国）有限公司 | Stud shaft power equipment of tracing to source |
| CN207215330U (en) * | 2017-08-28 | 2018-04-10 | 北京汽车股份有限公司 | Vehicle fastener is fastenedly connected test system |
| CN108572040A (en) * | 2018-04-23 | 2018-09-25 | 北京交通大学 | A detection method, detection system and detection device for axial force of bolts in service |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111473897A (en) * | 2020-04-02 | 2020-07-31 | 上海奥达科股份有限公司 | Calibration and correction method for short-tail rivet |
| EP4206636A4 (en) * | 2020-08-25 | 2024-10-09 | Suzhou Phaserise Technology Co., Ltd. | Method for quick calibration and measurement of axial forces of high-strength bolts by transverse and longitudinal ultrasonic waves |
| CN112461429A (en) * | 2020-11-10 | 2021-03-09 | 西南交通大学 | Ultrasonic pretightening force measurement method for low-elasticity-modulus material bolt |
| CN112461429B (en) * | 2020-11-10 | 2022-05-27 | 西南交通大学 | Ultrasonic pretightening force measurement method for low-elasticity-modulus material bolt |
| 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 |
| CN114577394A (en) * | 2022-03-04 | 2022-06-03 | 北京理工大学 | Bolt fastening axial tensile stress detection calibration method and device |
| CN115507989A (en) * | 2022-08-22 | 2022-12-23 | 中国第一汽车股份有限公司 | Device and method for measuring axial force of connecting bolt of steering knuckle and hub bearing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109724742A (en) | A method of it is measured for bolt axial force | |
| CN105014434B (en) | The processing tool of V-type serial diesel engine body sleeve port and processing method | |
| US8490500B2 (en) | Torque coefficient measuring device | |
| CN108760230A (en) | A kind of mounting device and installation method of model in wind tunnel | |
| CN102116696A (en) | Calibrating device of automobile pedal force and travel detector | |
| JPH10510042A (en) | Method and manufacture of axial tension bolt | |
| CN105241358A (en) | Experiment clamp with an angle adjusting function and a height adjusting function | |
| CN207923410U (en) | A kind of mounting device of model in wind tunnel | |
| CN109632471A (en) | A kind of novel pulling force experiment machine fixture | |
| CN110726635A (en) | Coaxiality adjusting system and coaxiality dimension reduction adjusting method based on strain gauge | |
| CN217504579U (en) | Quick proofreading of wheel screw hole is with examining utensil | |
| CN211179396U (en) | Coaxiality Adjustment System Based on Strain Gauge | |
| CN110873620A (en) | A bolt pre-tightening force test and fatigue test device | |
| CN202708519U (en) | Magnetic gauge stand fixing bracket | |
| CN217072073U (en) | A inspection anchor clamps for jumbo size thin wall lopps part | |
| CN105904362A (en) | Self-centering cylinder clamp device | |
| CN207071865U (en) | Frock clamp | |
| CN211179394U (en) | Four-axis centering adjustment system for biaxial tensile testing machine | |
| CN210953204U (en) | Bolt pretightening force test and fatigue test device | |
| CN214542178U (en) | Fixing mechanism and detector with same | |
| CN217560550U (en) | Roundness and concentricity detection device | |
| CN207317778U (en) | Automatic precision measuring device | |
| CN101387486A (en) | Pin hole symmetrical degree testing device | |
| CN210802882U (en) | Adjustable spring calibration tool | |
| CN117433783B (en) | Tapered roller bearing positioning pre-tightening adjustment method and device based on axial rigidity detection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190507 |
|
| RJ01 | Rejection of invention patent application after publication |