CN108489654A - A kind of spin friction weldering frictional interface part positive pressure force measuring device and measurement method - Google Patents
A kind of spin friction weldering frictional interface part positive pressure force measuring device and measurement method Download PDFInfo
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- CN108489654A CN108489654A CN201810522230.2A CN201810522230A CN108489654A CN 108489654 A CN108489654 A CN 108489654A CN 201810522230 A CN201810522230 A CN 201810522230A CN 108489654 A CN108489654 A CN 108489654A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 37
- 238000005070 sampling Methods 0.000 claims abstract description 32
- 230000004069 differentiation Effects 0.000 claims abstract description 13
- 238000005259 measurement Methods 0.000 claims abstract description 12
- 238000003466 welding Methods 0.000 claims description 93
- 238000000034 method Methods 0.000 claims description 37
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- 238000007405 data analysis Methods 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 3
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- 238000002474 experimental method Methods 0.000 description 4
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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
- G01L5/0028—Force sensors associated with force applying means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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Abstract
The invention discloses the measurement methods that frictional interface local dynamic station normal pressure is welded in a kind of spin friction, and technical problem measured directly is difficult to for solving existing frictional interface local dynamic station normal pressure.Technical solution is that mobile terminal welded specimen 3 is fixed as one with sensor 8 by trip bolt 2, fixed pin 7 and sensor base 1, and the power that small diameter is installed on mobile terminal friction of workpiece surface samples contact 5, the active force of acquisition contact end face.Contact is transmitted to " force snesor 8 " by collected power, by " transmission rod 4 " across workpiece, realizes the acquisition of power.Average value of the power on sampling contact face area is taken, as normal pressure of the interface at this.By timely collection, the differentiation of the normal pressure of the point at any time can get.By the way that sampling contact is arranged in interface different location, pressure distribution and its acquisition of Evolving data of entire frictional interface can be completed, solves the problems, such as the direct measurement of frictional interface local dynamic station normal pressure.
Description
Technical field
The invention belongs to material processing parameter measurement field, more particularly to a kind of interface dynamic normal pressure measurement side
Frictional interface local dynamic station positive pressure force measuring method is welded in method, especially a kind of spin friction.
Background technology
Friction welding process parameter mainly has rotary speed and normal pressure, and wherein frictional interface normal pressure is usually with axial upset
Power being evenly distributed to characterize on interface.However, studies have shown that the normal pressure of this " average " processing, welding quality
Control support is limited.It turns out that interface normal pressure is uneven first, secondly nor constant.This normal pressure and its point
Cloth, evolution process are an important factor in order of friction welding joint forming, are related to the accuracy and friction welding (FW) of result of study
The reliability of technology.However, high-tech industry is to frictional qualities and service reliability, more stringent requirements are proposed.Due to the boundary that rubs
It is big that face normal pressure directly measures difficulty, in previous research, only collects entire frictional interface by designing tooling and exists
The statistical average rule that normal pressure changes in welding process；Upsetting process is then borrowed for distribution of the normal pressure on weld interface
The regularity of distribution of median surface pressure, this is a compromise, also proposes challenge to the Joint Reliability of friction welding (FW).
Document " Moneim M E A, Serag S M, Nasser A A, et al.Axial force measurements
for the friction welding of aluminium tubes.Wear,1983,85(3):339-346. " pass through repacking
The clamping device of sample, the sample end in the method that sample mobile terminal end has installed pressure sensor additional has obtained friction welding process
The development law for rectifying pressure can characterize the differentiation of whole normal pressure in friction welding process to a certain extent.The office of the method
Limit is that the normal pressure not to frictional interface in welding process is directly measured, and obtained normal pressure is frictional interface pressure
In the response of sample end under actual working conditions.The normal pressure that sample end is obtained with sensor measurement may be by side
The influence of wall fixture and error.Nor the normal pressure of interface part and the distribution results of normal pressure can be obtained.
" Tian Fengjie, peace is grand, Bruce Lee, and Lv Chong are used for the pressure and torque On-line sampling system of agitating friction weldering for patent
The Liaoning device：CN107138848A, 2017-09-08. " are obtained by way of sensor is arranged on agitating friction weldering handle of a knife
The situation of change of agitating friction weldering process median surface integral pressure can characterize friction during agitating friction weldering to a certain extent
The evolution of interface entirety normal pressure.The limitation of the method is that the normal pressure to frictional interface is not measured directly,
Obtained normal pressure is the pressure statistical result of weld interface entirety, nor can obtain the normal pressure and positive pressure of interface part
The distribution results of power.
Invention content
Present invention solves the technical problem that being：During spin friction weldering, frictional interface local dynamic station normal pressure can not be straight
The technical issues of connecing measurement.
The technical scheme is that：A kind of spin friction weldering frictional interface local dynamic station positive pressure force measuring device, including
Sensor base, mobile terminal welded specimen, transmission rod, power sampling contact and force snesor；The mobile terminal welded specimen is pre-
The cylinder of through-hole processed, and through-bore axis is parallel with mobile terminal welded specimen axis；Power sampling contact is located in through-hole and power is adopted
The contact of sample contact is contacted with transmission rod；Transmission rod one end is stretched into through-hole and samples contact with power, and the other end is passed with power
Sensor contacts；Force snesor is located in sensor base, is consolidated sensor base and mobile terminal welded specimen by fixation kit
It is fixed so that force snesor, transmission rod and power sampling contact are mutually withstood；Power samples round end welded specimen end outside contact
Power is reached force snesor by transmission rod, realizes power sampling by the sampling that frictional interface normal pressure is carried out behind the certain point on face
The acquisition of the normal pressure of the point of contact.
The present invention further technical solution be：The force snesor, transmission rod and power sample contact by fixation kit
And the pre- top process in welding process so that do not generate dislocation when measurement.
The present invention further technical solution be：The fixation kit is screw-nut.
The present invention further technical solution be：Normal pressure at frictional interface one can be obtained at any time in one-shot measurement process
It develops；By the way that sampling contact is arranged in interface different location, the acquisition of the normal pressure Evolving data of entire frictional interface can be completed.
The present invention further technical solution be：The through-hole being provided on the mobile terminal welded specimen, the diameter in hole
It is processed according to the outer diameter of transmission rod and the outer diameter for sampling contact.
The present invention further technical solution be：A kind of spin friction weldering frictional interface local dynamic station positive pressure force measuring device
Measurement method, include the following steps：
Step 1：The assembling of each component；Power acquisition contact is sequentially placed into transmission rod in the welded specimen of mobile terminal and is provided with
Through-hole in, will be fixed in sensor base in the welded specimen of mobile terminal later；Sensor is connected in sensor base, and
It keeps being in close contact with transmission rod；Sensor connects external data acquisition system simultaneously；
Step 2：In the end face same point of round end welded specimen, the weldering under different welding rotating speeds and welding pressure
Connect the acquisition of experiment and frictional interface normal pressure, including following sub-step：
Sub-step one：The mobile terminal welded specimen being fixed as one in step 1 and sensor are placed on to the movement of welding machine
Device and round end welded specimen after setting different welding pressures and different welding rotating speeds, are carried out rotating welding, welded by end
First pre- top is laid a finger on for Cheng Zhong, mobile terminal and round end sample, is then detached, then round end sample starts to rotate, mobile terminal
With certain work speed close to round end, power acquires contact 5 and contacts round end welded specimen sample；
Sub-step two：Power acquisition contact 5 collects power to the point of the contact round end welded specimen of contact, and passes through power transmission
Bar reaches sensor, reaches external data acquisition system by sensor, analyzes power；First in the same rotating speed of setting
Under, the frictional interface dynamic positive pressure force data at 4 exemplary positions of acquisition interface at various pressures；Then change welding to turn
Speed, the frictional interface dynamic positive pressure force data under another rotating speed, different pressures at 4 exemplary positions of acquisition interface；
Step 3：When needing to measure the power of other points of round end welded specimen end face, need to open at the different location of interface
Through-hole, setting sampling contact, you can complete the acquisition of the normal pressure Evolving data of entire frictional interface；
Step 4：After external data acquisition system carries out all acquisitions of point power, data analysis is carried out, obtains spin friction
In welding process, the differentiation of entire frictional interface dynamic normal pressure and the regularity of distribution.
The present invention further technical solution be：Frictional interface normal pressure establishes generation at first by sample outer rim, to center
It expands；Normal pressure develops at any time, first rapid to rise, and then declines, finally eases up in default welding pressure；Difference welding rotating speed
And under the conditions of welding pressure, development law is identical at any time for frictional interface normal pressure, and relative value is pressed with welding rotating speed and welding
Power variation has certain floating；It is developed with weld interval, " U-shaped "-" V-type "-" M types "-is presented in the distribution of frictional interface normal pressure
The development law of " linear type ".
Invention effect
The technical effects of the invention are that：The present apparatus is obtained and is moved at frictional interface different location during spin friction is welded
The distribution of state normal pressure and evolution.By the way that mobile terminal welded specimen is fixed as one with sensor by tooling, together
With working table movement, the real-time acquisition of frictional interface local dynamic station normal pressure is realized.By on mobile terminal friction of workpiece surface
Frictional interface in the power sampling contact acquisition welding process of certain small diameter (about 1/10 or so of specimen finish) is installed
Normal pressure.The influence of radial shear power is eliminated using the clearance fit of fixing tool, power sampling contact, power transmission lever and through-hole.
Collected power is transmitted to " force snesor " by contact by " transmission rod " across workpiece, realizes the acquisition of power.The power is taken to exist
The average value on contact face area is sampled, as normal pressure of the interface at this.At the real-time acquisition in friction welding process
Reason can get the differentiation of the normal pressure of the point at any time.By the way that sampling contact is arranged in interface different location, can complete entirely to rub
Wipe pressure distribution and its acquisition of Evolving data at interface.
Description of the drawings
Fig. 1 is the scheme of installation that apparatus of the present invention measure normal pressure.
Fig. 2 is sample different zones friction circle during spin friction weldering under the collected different welding rotating speeds of the present invention
Face dynamic normal pressure with weld interval Evolving data.Figure (a), (b), (c) are respectively welding pressure 80MPa, weld rotating speed
The collected frictional interface normal pressure development law of 500rpm, 900rpm and 1500rpm institute.
Fig. 3 is sample different zones friction circle during spin friction weldering under the collected different welding pressures of the present invention
Face dynamic positive pressure force data.Figure (a), (b), (c) they are respectively to weld rotating speed 900rpm, welding pressure 60MPa, 80MPa,
Lower collected frictional interface normal pressure development law of 100MPa.
Fig. 4 is sample different zones friction circle during spin friction weldering under the collected different welding rotating speeds of the present invention
Face dynamic normal pressure with weld interval distributed data.It is respectively welding pressure to scheme (a)-(b), (c)-(d), (e)-(f)
80MPa, the collected frictional interface normal pressure regularity of distribution of welding rotating speed 500rpm, 900rpm and 1500rpm institutes.
Fig. 5 is sample different zones friction circle during spin friction weldering under the collected different welding pressures of the present invention
Face dynamic normal pressure with weld interval distributed data.It is respectively to weld rotating speed to scheme (a)-(b), (c)-(d), (e)-(f)
Lower collected frictional interface normal pressure regularity of distribution of 900rpm, welding pressure 60MPa, 80MPa, 100MPa.
In figure, 1- sensor bases, 2- trip bolts, the mobile terminals 3- welded specimen, 4- transmission rods, 5- power acquisition contact,
6- round end welded specimens, 7- fixed pins, 8- force snesors, 9- trip bolts.
Specific implementation mode
Referring to Fig. 1-Fig. 5, for the direct measurement for realizing to frictional interface dynamic normal pressure, the utility model discloses a kind of rotary friction
Wipe the direct measuring device of weldering frictional interface local dynamic station normal pressure and method.A kind of spin friction weldering frictional interface local dynamic station is just
The direct measuring device of pressure is that pressure sensor and mobile terminal welded specimen are fixed as one, and realizes and rubs in welding process
The implementation of interface normal pressure measures.Device is adopted by sensor base 1, trip bolt 2, mobile terminal welded specimen 3, transmission rod 4, power
Sample contact 5, fixed pin 7, pressure sensor 8, trip bolt 9 form.
Mobile terminal welded specimen 3 and sensor 8 are fixed as one by trip bolt 2, fixed pin 7 and sensor base 1
Body installs the power sampling contact 5 of certain small diameter (about 1/10 or so of specimen finish), patch in the workpiece through-hole of mobile terminal
Friction surface is closed, transmission rod is then put into, acquires the normal pressure of frictional interface in welding process.Contact continues collected power
It is transmitted to " force snesor 8 " by " transmission rod 4 " across workpiece, realizes the acquisition of power.Take the power in sampling contact end face face
Average value in product, as normal pressure of the interface at this.Utilize sensor base 1, the fixed function of trip bolt 2, fixed pin 7
And power sampling contact 5, power transmission lever 4 eliminate the influence of radial shear power with the clearance fit of through-hole.Pass through friction welding process
In timely collection, can get the normal pressure differentiation at any time of the point.By being touched in the setting sampling of interface different location
Head can complete pressure distribution and its acquisition of Evolving data of entire frictional interface.
Mobile terminal welded specimen is fixed as one with sensor by tooling, by being installed in the workpiece through-hole of mobile terminal
The power of certain small diameter (about 1/10 or so of specimen finish) samples contact, is bonded friction surface, is then put into transmission rod,
Acquire the normal pressure of frictional interface in welding process.Utilize the clearance fit of fixing tool, power sampling contact, transmission rod and through-hole
Eliminate the influence of radial shear power.Collected power is transmitted to " force snesor " by contact by " transmission rod " across workpiece,
Realize the acquisition of power.Average value of the power on sampling contact face area is taken, as normal pressure of the interface at this.Pass through friction
Timely collection during weldering can get the differentiation of the normal pressure of the point at any time.By being arranged in interface different location
Contact is sampled, pressure distribution and its acquisition of Evolving data of entire frictional interface can be completed.
Frictional interface local dynamic station positive pressure force measuring method during a kind of spin friction weldering carried out using the present apparatus, it is special
Point is to use following steps：
Step 1: the installation of welded specimen and sensor is fixed.Power acquisition contact 5 and transmission rod 4 are received in prefabricated
In the mobile terminal welded specimen of different-diameter through-hole structure.Mobile terminal welded specimen is fixed on sensor base by fixed pin 7
In seat 1.Sensor 8 is fixed in sensor base 1 using trip bolt 9, and keeps being in close contact with transmission rod 4, and will
Sensor is connected to data collecting system.Finally, trip bolt 2 is tightened.Thus welded specimen is fixed as one with sensor.
Step 2: the acquisition of Welding experiment and interface normal pressure.The welded specimen being fixed as one and sensor are placed
It sets common welding parameter according to stainless steel friction-welding technique specification in the mobile terminal of welding machine and is welded, distinguished here
It is 500rpm/min, 900rpm/min, 1500rpm/min to choose welding rotating speed；Welding pressure is respectively 60MPa, 80MPa,
100MPa。
Start to acquire frictional interface positive pressure force data when welding process will start, by compareing with weld interval, i.e.,
It can get the differentiation of the normal pressure of the point at any time.
Step 3: the differentiation of normal pressure at any time at frictional interface one can be obtained in one-shot measurement process；By interface not
Sampling contact is set with position, the acquisition of the normal pressure Evolving data of entire frictional interface can be completed.Different zones are acquired
To data analyze at any time, the data that entire frictional interface pressure is distributed at any time can be obtained.It is adopted using fixing tool, power
The clearance fit of sample contact, transmission rod and through-hole eliminates the influence of radial shear power, obtains friction circle during spin friction weldering
The distribution of face local dynamic station normal pressure and development law.
The installation of step 1, welded specimen and sensor is fixed.
In the mobile terminal welded specimen for being received in different-diameter through-hole structure prefabricated by power acquisition contact 5 and transmission rod 4.
Mobile terminal welded specimen 3 is fixed in sensor base 1 by fixed pin 7.Sensor 8 is fixed on using trip bolt 9
It in sensor base 1, and keeps being in close contact with transmission rod 4, sensor 8 connects external data acquisition system simultaneously.Finally, on
Tight trip bolt 2.Thus welded specimen is fixed as one with sensor.
Step 2, in the end face same point of round end welded specimen, the welding under difference welding rotating speeds and welding pressure are real
Test the acquisition with frictional interface normal pressure, including following sub-step：
Sub-step 1：The mobile terminal welded specimen being fixed as one in step 1 and sensor are placed on to the movement of welding machine
Device and round end welded specimen after setting different welding pressures and different welding rotating speeds, are carried out rotating welding, welded by end
First pre- top is laid a finger on for Cheng Zhong, mobile terminal and round end sample, is then detached, then round end sample starts to rotate, mobile terminal
With certain work speed close to round end, power acquires contact 5 and contacts round end welded specimen sample；
Sub-step 2：Power acquisition contact 5 collects power to the point of the contact round end welded specimen of contact, and passes through power transmission
Bar reaches sensor, reaches external data acquisition system by sensor, analyzes power.First in the same rotating speed of setting
Under, the frictional interface dynamic positive pressure force data at 4 exemplary positions of acquisition interface at various pressures；Then change welding to turn
Speed, the frictional interface dynamic positive pressure force data under another rotating speed, different pressures at 4 exemplary positions of acquisition interface.
Sub-step 3：The acquisition of the Welding experiment and frictional interface normal pressure of difference welding rotating speed.
The welded specimen being fixed as one and sensor are placed on to the mobile terminal of welding machine.Setting welding parameter is welded
It connects.The industrial SUS304 bars of φ 25 are selected, the differentiation rule of frictional interface normal pressure at any time under different welding rotating speeds are studied
Rule.The welding parameter of selection is welding pressure 80MPa, and welding rotating speed is respectively 500rpm, 900rpm, 1500rpm.Booting, into
Row welding, gathered data.It can obtain, frictional interface normal pressure establishes generation at first by sample outer rim, is expanded to center.Normal pressure with
Time-evolution, it is first rapid to rise, then decline, finally eases up in default welding pressure.Maximum normal pressure is big in uphill process
In preset welding pressure.Development law is identical at any time for frictional interface normal pressure under the conditions of different rotating speeds.As rotating speed increases,
Pressure reduces the time required to rising to maximum value.
Sub-step 4：The acquisition of the Welding experiment and frictional interface normal pressure of different welding pressures.
The welded specimen being fixed as one and sensor are placed on to the mobile terminal of welding machine.Setting welding parameter is welded
It connects.The industrial SUS304 bars for selecting φ 25 study the differentiation rule of frictional interface normal pressure at any time under different welding pressures
Rule.The welding parameter of selection is welding rotating speed 900rpm, and welding pressure is respectively 500rpm, 900rpm, 1500rpm.Booting, into
Row welding, gathered data.It can obtain, frictional interface normal pressure establishes generation at first by sample outer rim, is expanded to center.Normal pressure with
Time-evolution, it is first rapid to rise, then decline, finally eases up in default welding pressure.Maximum normal pressure is big in uphill process
In preset welding pressure.Development law is identical at any time for frictional interface normal pressure under different rotating speeds pressure.
Step 3 when needing to measure the power of other points of round end welded specimen end face, needs open-minded at the different location of interface
Hole, setting sampling contact, you can complete the acquisition of the normal pressure Evolving data of entire frictional interface.
After step 4, external data acquisition system carry out all acquisitions of point power, data analysis is carried out, obtains spin friction
In welding process, the differentiation of entire frictional interface dynamic normal pressure and the regularity of distribution.The not same district that will be collected in step 2,3
The frictional interface positive pressure force data in domain is analyzed at any time, can obtain the data that entire frictional interface pressure is distributed at any time.With
Weld interval develops, and the development law of " U-shaped "-" V-type "-" M types "-" linear type " is presented in the distribution of frictional interface normal pressure.
Claims (7)
1. frictional interface local dynamic station positive pressure force measuring device is welded in a kind of spin friction, which is characterized in that including sensor base
(1), mobile terminal welded specimen (3), transmission rod (4), power sampling contact (5) and force snesor (8)；The mobile terminal welded specimen
(3) it is the cylinder of prefabricated through-hole, and through-bore axis is parallel with mobile terminal welded specimen (3) axis；Power sampling contact (5) is located at
In through-hole and the contact of power sampling contact (5) is contacted with transmission rod；Transmission rod (4) one end is stretched into through-hole and samples contact with power
(5) it contacts, the other end is contacted with force snesor (8)；Force snesor (8) is located in sensor base (1), will by fixation kit
Sensor base (1) is fixed with mobile terminal welded specimen (3) so that force snesor (8), transmission rod (4) and power sampling contact (5)
Mutually withstand；Power carries out frictional interface positive pressure after sampling the certain point on contact (5) contact external round end welded specimen end face
Power is reached force snesor (8) by transmission rod (4), realizes the normal pressure for the point that power sampling contact (5) contacts by the sampling of power
Acquisition.
2. frictional interface local dynamic station positive pressure force measuring device is welded in a kind of spin friction as described in claim 1, feature exists
It was pushed up by pre- in fixation kit and welding process in, the force snesor (8), transmission rod (4) and power sampling contact (5)
Journey so that do not generate dislocation when measurement.
3. frictional interface local dynamic station positive pressure force measuring device is welded in a kind of spin friction as described in claim 1, feature exists
In the fixation kit is screw-nut.
4. frictional interface local dynamic station positive pressure force measuring device is welded in a kind of spin friction as described in claim 1, feature exists
In the differentiation of normal pressure at any time at frictional interface one can be obtained in one-shot measurement process；By being adopted in the setting of interface different location
Sample contact can complete the acquisition of the normal pressure Evolving data of entire frictional interface.
5. frictional interface local dynamic station positive pressure force measuring device is welded in a kind of spin friction as described in claim 1, feature exists
In, the through-hole being provided on the mobile terminal welded specimen (3), the diameter in hole is according to the outer diameter of transmission rod and sampling contact
Outer diameter is processed.
6. a kind of measurement for welding frictional interface local dynamic station positive pressure force measuring device based on a kind of spin friction described in claim 1
Method, which is characterized in that include the following steps：
Step 1：The assembling of each component；Power acquisition contact (5) is sequentially placed into the welded specimen of mobile terminal (3) with transmission rod (4)
In the through-hole being provided with, (3) in the welded specimen of mobile terminal are fixed in sensor base (1) later；Sensor (8) is connected in biography
In sensor pedestal (1), and keep being in close contact with transmission rod (4)；Sensor (8) while connecting external data acquisition system；
Step 2：In the end face same point of round end welded specimen, the welding under different welding rotating speeds and welding pressure is real
Test the acquisition with frictional interface normal pressure, including following sub-step：
Sub-step one：The mobile terminal welded specimen being fixed as one in step 1 and sensor are placed on to the mobile terminal of welding machine,
After setting different welding pressures and different welding rotating speeds, device and round end welded specimen are subjected to rotating welding, welding process
In, first pre- top is laid a finger on for mobile terminal and round end sample, is then detached, and then round end sample starts to rotate, mobile terminal examination
With certain work speed close to round end, power acquires contact 5 and contacts round end welded specimen sample；
Sub-step two：Power acquisition contact 5 collects power to the point of the contact round end welded specimen of contact, and is passed by transmission rod
To sensor, external data acquisition system is reached by sensor, power is analyzed；First under the same rotating speed of setting,
Frictional interface dynamic positive pressure force data under different pressures at 4 exemplary positions of acquisition interface；Then change welding rotating speed, another
One rotating speed, the frictional interface dynamic positive pressure force data under different pressures at 4 exemplary positions of acquisition interface；
Step 3：When needing to measure the power of other points of round end welded specimen end face, need to open hole at the different location of interface,
Setting sampling contact, you can complete the acquisition of the normal pressure Evolving data of entire frictional interface；
Step 4：After external data acquisition system carries out all acquisitions of point power, data analysis is carried out, show that spin friction is welded
In the process, the differentiation of entire frictional interface dynamic normal pressure and the regularity of distribution.
7. it is based on frictional interface local dynamic station positive pressure force measuring method during a kind of spin friction weldering described in claim 1,
It is characterized in that, frictional interface normal pressure establishes generation at first by sample outer rim, expanded to center；Normal pressure develops at any time,
It is first rapid to rise, then decline, finally eases up in default welding pressure；Under the conditions of difference welding rotating speed and welding pressure, friction
Development law is identical at any time for interface normal pressure, and relative value has certain floating with welding rotating speed and welding pressure variation；With weldering
Time-evolution is connect, the development law of " U-shaped "-" V-type "-" M types "-" linear type " is presented in the distribution of frictional interface normal pressure.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108788448A (en) * | 2018-09-06 | 2018-11-13 | 上海锢维智能设备有限公司 | A kind of welding equipment and method of motor copper rotor |
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