CN108571943B - A kind of two cylinder axis intersecting angle self-operated measuring unit of contact - Google Patents
A kind of two cylinder axis intersecting angle self-operated measuring unit of contact Download PDFInfo
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- CN108571943B CN108571943B CN201810314944.4A CN201810314944A CN108571943B CN 108571943 B CN108571943 B CN 108571943B CN 201810314944 A CN201810314944 A CN 201810314944A CN 108571943 B CN108571943 B CN 108571943B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
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Abstract
The invention discloses a kind of two cylinder axis intersecting angle self-operated measuring unit of contact, which is made of apparatus platform, detection device, driving device.Apparatus platform plays support, fixed function, and apparatus platform can effectively support detection device and driving device.Place radial Circular gratings, effective automatic measurement and control angular displacement in the marginal portion of apparatus platform circumference guide rail.The device can be suitable for the test specimen of different sizes, and the scope of application is wider, can satisfy different experiment demands.Detection device is capable of the size of real-time monitoring applied force, convenient for studying faying face mechanical characteristic.The device installation method is simple, clear principle, automatically controls, easy to operate.
Description
Technical field
The present invention relates to faying faces to test fields of measurement, and in particular to obtains faying face certain by the measuring device
When contacting with each other under stress condition control and measure Axis Cross angle situation of change more particularly to a kind of contact cylindrical body
Axis Cross angle self-operated measuring unit.
Background technique
Studies have shown that the rigidity of faying face accounts for about the 60%~80% of lathe global stiffness, the contact resistance of faying face in lathe
Buddhist nun accounts for 90% or more that lathe all damps.And how to obtain faying face mechanical characteristic is always research puzzle.In existing combination
In the research of face, researcher is based on respective random rough surface, using processing method, surface roughness size, divides shape and statistics
Etc. parameters faying face is classified and is described, and use Hertzian contact theory method, it is intended to it is special to solve any combination face mechanics
Property experiment or problem analysis.Even if faying face slightly changes contact position in practice, mechanical characteristic can also change, more
Much less difference present in mechanical characteristic between different faying faces.The presence of the phenomenon causes follow-up study difficulty.Especially
It is embodied in, and when follow-up study has differences with previous experiments data, can not replicate the used surface topography of front researcher
Faying face, cause faying face mechanical characteristic experimental result that can not trace and verify.
In practice, often there is regularity and periodically characterization in machining surface, especially in precision machining processes, so
And in existing faying face mechanical characteristics research and underuse these topographical informations.In the rule-based surface topography of the present apparatus
Special cylinder waveform microscopic appearance faying face extracts two cylinder contacts problems, measures in elastic range, vertical direction load
Different impressed pressures, control and measure the situation of change of two cylinder axis intersecting angles, to facilitate two circle of subsequent experimental measurement
The contact gap situation of change of column in the vertical direction.
Summary of the invention
It is short, easy for installation and automatically control, high efficiency, low cost the purpose of the present invention is to provide a kind of manufacturing cycle
Experimental provision manually controls the two cylinder axis angles of the crossing when two cylinders of solution contact with each other under different plus loads
The problem that degree is inconvenient and error is too big.
To achieve the above object, the present invention provides contact cylinder axis intersecting angle self-operated measuring unit, technical side
Case is as follows:
Contact cylinder axis intersecting angle self-operated measuring unit, the device are filled by apparatus platform, detection device, driving
Set composition.Apparatus platform plays support, fixed function, and apparatus platform can effectively support detection device and driving device.Dress
Place radial Circular gratings, effective automatic measurement and control angular displacement in the marginal portion of horizontalization platform circumference guide rail.The device can
Suitable for the test specimen of different sizes, the scope of application is wider, can satisfy different experiment demands.Detection device can be real-time
The size of applied force is monitored, convenient for studying faying face mechanical characteristic.Driving device can be automatically controlled by motor
The circumference of test specimen is mobile, and carriage portion is based on the aluminium alloy plate high, light-weight by intensity, corrosion resistance is good, processing performance is excellent
Raw material are wanted to make, four pulleys of lower part installation run smoothness, and precision is higher.The automatic axis angle for changing two cylinder contacts
Degree, and pass through the size of tuning drive gear and the effect real-time monitoring angle value of Circular gratings.
Compared with prior art, the advantages of the present invention are, the device is based in regular surfaces pattern
Special cylinder waveform microscopic appearance faying face is driven using the gear teeth circle that arc rack and arc guide rail are combined
The arc-shaped guide rail of slide is mounted on gear and motor, test specimen on slide, moves motor driven test specimen, changes two cylinders and connects
The Axis Cross angle of touching, and by the pointer and Circular gratings real-time measurement angular dimension on slide, it is subsequent two cylinder contacts
The measurement in gap provides test basis.The device installation method is simple, clear principle, automatically controls, easy to operate.
Detailed description of the invention
Fig. 1 overall structure of the present invention.
The circumference guide rail structure axonometric drawing of Fig. 2 gear teeth circle driving slide.
The circumference guide rail structure top view of Fig. 3 gear teeth circle driving slide
In figure: 1 is apparatus platform, and 2 be angle Circular gratings, and 3 drive the circumference guide rail of slide for gear teeth circle, and 4 be cunning
Seat, 5 be tuning drive gear, and 6 be motor, and 7 be the test specimen gripping mechanism on slide, and 8 be upper test specimen, and 10 be lower test specimen, and 9 examine for power
Probing head, 11 be lower test specimen gripping mechanism, and 12 be support construction, and 13 be detection device, and 14 be connection structure, and 15 is flat for force
Platform, 16 be counterweight, and 17 be gear ring.
Specific embodiment
Below in conjunction with the attached drawing in present example, the technical solution in present example is carried out clearly and completely
Description.
Refering to fig. 1, the present invention provides a kind of control of faying face contact angle and measuring device: a kind of two cylindrical body of contact
Axis Cross angle self-operated measuring unit, the measuring device include apparatus platform 1, driving device, detection device.
Apparatus platform 1 is equipped with angle Circular gratings 2, lower test specimen gripping mechanism 11 and support construction 12.Support construction 12 is fixed
On the surface of apparatus platform 1, lower test specimen gripping mechanism 11 is mounted between support construction 12, and angle Circular gratings 2 are laid in support knot
On apparatus platform 1 between structure 12, and support construction 12 can adjust height under on the ground according to the accurate size of test specimen.Lower test specimen
10 are mounted in support construction 12 by lower test specimen gripping mechanism 11.
Detection device includes power detection probe 9, and real-time detection apparatus 13, connection structure 14, exert a force platform 15 and counterweight
16.Real-time detection apparatus 13 is mounted on the top center position of support construction 12, and force platform 15 is by connection structure 14 and in fact
When detection device 13 connect；Power detection probe 9 is mounted on the bottom of real-time detection apparatus 13.
Driving device includes the circular orbit 3 of gear teeth circle driving slide, slide 4, tuning drive gear 5, upper test specimen clamping
Device 7, decelerating motor 6.The circular orbit 3 of gear teeth circle driving slide is made of circumference rack gear, gear ring 17 and circumference guide rail,
Decelerating motor 6 is fixed on the slide 4 with idler wheel by ring flange；The side of slide 4 is arranged in tuning drive gear 5；Upper test specimen 8 is logical
Test specimen gripping mechanism 7 is crossed to be fixed on slide 4；
Test specimen 8 is arranged above lower test specimen on cylindrical body, and is spatial vertical laying with lower test specimen, and power detection probe 9 is just
To the crossing center of test specimen 8 on cylindrical body and lower test specimen.
Angle Circular gratings 2 are radial Circular gratings.The Moire fringe photosignal of near sinusoidal can be obtained from angle Circular gratings 2,
Displacement is thus converted by electronics method by the information that amount of digital information, analog information amount, number and simulation combine
Amount, in order to automatic measurement and control angular displacement.Lower test specimen gripping mechanism 11 can test specimen under clamping, and be suitable for multiple rulers
The lower test specimen of very little size.
By increase different quality and quantity counterweight 16 on force platform 15, connection structure 14 is then transferred force to,
And test specimen is transmitted to by power detection probe 9, so that test specimen 8 and lower test specimen is contacted with each other and form contact area, generates power
Learn characteristic.Detection device is capable of the size of real-time monitoring applied force, convenient for studying faying face mechanical characteristic.Lower test specimen card
Tight device 11 can make lower test specimen remain stationary state in upper test specimen motion process.
Slide 4 is that aluminium alloy plate high, light-weight by intensity, that corrosion resistance is good, processing performance is excellent makes for main raw material(s),
Four rolling is installed, two of them are concentric idler wheels, and the other two are eccentric rollers, keep decelerating motor 6 real-time below slide 4
It drives slide 4 to move, and then rotates lower test specimen, the automatic axis angle for changing two cylinder contacts, and pass through tuning drive gear 5 and angle
The size of the effect real-time monitoring angle value of Circular gratings 2.
Two cylinder axis intersecting angle self-operated measuring unit of contact is first had to when in use by upper test specimen 8, lower test specimen
In 10 clampings to upper test specimen gripping mechanism 7, lower test specimen gripping mechanism 11, two sample dimensions can be different, control the dress in fixture
Within the scope of folder.Then opening detecting device 13, motor part 6 etc., rule of thumb reference value selects the weight of suitable size
Code be placed into force platform, then control motor drive slide, circumferentially guide rail moves upper test specimen point by point, tuning drive gear 5 and angle
Circular gratings 2 record the angle value passed by real time, while the size of 13 real-time monitoring of detection device record ambient pressure and detection are visited
The displacement of first 9 decline.To meet requirement of experiment, constantly change the size of power in test specimen elastic range, records angle change feelings
Condition and probe decline displacement.Finally experimental basis is provided for equations.
According to hertz (Hertz) contact theory, it is assumed that the circumference of two cylinder contact levels is an ellipse, and contact surface
On pressure distribution be, the section side of vertically passing contact point directly proportional with the ordinate of the half ellipsoidal surface based on this ellipse
To, that is, assume
P=p0{1-(x/a)2-(y/b)2}1/2
P in formula0It is the pressure intensity Mpa of central point；
A, b is the long axis and minor axis length mm of Contact Ellipse；
P is the suffered gross pressure N of two articles contact.
Wherein
If formula p=p0{1-(x/a)2-(y/b)2}1/2Pressure is reasonably distributed, then can solve
(k1+k2)πap0K (e)=h
In formulaμ is the Poisson's ratio of material, and E is the elasticity modulus of material.K(e),E
(e) for using n/m as the complete elliptic integral of modulus, e is elliptical eccentricity
Above-mentioned K, E, e meet the following conditions
For such contact, contact zone is ellipse, and contact zone pressure is distributed as half of ellipsoid, can be in the hope of after e is determined
The short major semiaxis a of Elliptical Contacts area, b are determined by following formula
In elliptical contact, compression p at elliptical center0It is maximum
In elliptical contact, contact pressure is distributed as
So in the common normal of contact point O away from the quite remote any two points of O point because of compression it is close to each other away from
From for i.e. contact gap
From formula it is found that after known to material, Poisson's ratio, elasticity modulus of material etc. can be obtained by national standard, and K
(e), the parameters such as E (e) and Axis Cross angle are closely bound up.In experimentation, after obtaining the power being loaded on test specimen, only
Accurately Axis Cross angle is measured, correct contact gap can be just solved.
To sum up, it can illustrate that a kind of two cylinder axis intersecting angle self-operated measuring unit of contact of the present invention can facilitate
Two cylinder axis intersecting angle of contact is efficiently controlled and measured, and the contact displacement of subsequent cylinder contacts is solved and is provided
Foundation.
Claims (4)
1. a kind of two cylinder axis intersecting angle self-operated measuring unit of contact, it is characterised in that: the measuring device includes dress
Horizontalization platform (1), driving device and detection device；
Apparatus platform (1) is equipped with angle Circular gratings (2), lower test specimen gripping mechanism (11) and support construction (12)；Support construction
(12) it is fixed on the surface of apparatus platform (1), lower test specimen gripping mechanism (11) is mounted between support construction (12), angle Circular gratings
(2) it is laid on the apparatus platform (1) between support construction (12), and support construction (12) can be according to the accurate size of test specimen
Lower adjustment height on the ground；Lower test specimen (10) is mounted on support construction (12) by lower test specimen gripping mechanism (11)；
Detection device includes power detection probe (9), real-time detection apparatus (13), connection structure (14), force platform (15) and weight
Code (16)；Real-time detection apparatus (13) is mounted on the top center position of support construction (12), and force platform (15) passes through connection
Structure (14) is connect with real-time detection apparatus (13)；Power detection probe (9) is mounted on the bottom of real-time detection apparatus (13)；
Driving device includes circular orbit (3), slide (4), tuning drive gear (5), the upper test specimen card of gear teeth circle driving slide
Tight device (7) and decelerating motor (6)；Gear teeth circle drives the circular orbit (3) of slide by circumference rack gear, gear ring (17) and circle
All guide rail compositions, decelerating motor (6) are fixed on the slide with idler wheel (4) by ring flange；Tuning drive gear (5) is arranged in slide
(4) side；Test specimen (8) is fixed on slide (4) by upper test specimen gripping mechanism (7) on cylindrical body；
Test specimen (8) is arranged above lower test specimen on cylindrical body, and is spatial vertical laying with lower test specimen, and power detection probe (9) is just
To the crossing center of test specimen on cylindrical body (8) and lower test specimen；
Angle Circular gratings (2) are radial Circular gratings；The Moire fringe photosignal of near sinusoidal can be obtained from angle Circular gratings (2),
Displacement is thus converted by electronics method by the information that amount of digital information, analog information amount, number and simulation combine
Amount, in order to automatic measurement and control angular displacement；Lower test specimen gripping mechanism (11) can test specimen under clamping, and be suitable for multiple
The lower test specimen of size；
By increasing different quality and quantity counterweight (16) in force platform (15), connection structure is then transferred force to
(14), it and by power detection probe (9) is transmitted to test specimen, test specimen on cylindrical body (8) and lower test specimen is made to contact with each other and be formed
Contact area generates mechanical characteristic；Detection device is capable of the size of real-time monitoring applied force, convenient for faying face mechanical characteristic into
Row research；Lower test specimen gripping mechanism (11) can make lower test specimen remain stationary state in upper test specimen motion process.
2. two cylinder axis intersecting angle self-operated measuring unit of a kind of contact according to claim 1, feature exist
In: it is main raw material(s) production that slide (4), which is by aluminium alloy plate, is equipped with four rolling below slide (4), two of them are same
Heart idler wheel, the other two are eccentric rollers, make decelerating motor (6) that slide (4) be driven to move in real time, and then rotate lower test specimen, from
The dynamic axis angle for changing two cylinder contacts, and pass through the effect real-time monitoring angle value of tuning drive gear (5) and angle Circular gratings (2)
Size.
3. two cylinder axis intersecting angle self-operated measuring unit of a kind of contact according to claim 1, feature exist
In: two cylinder axis intersecting angle self-operated measuring unit of contact is first had to when in use by test specimen on cylindrical body (8), lower examination
In part (10) clamping to upper test specimen gripping mechanism (7), lower test specimen gripping mechanism (11), two sample dimensions can be different, and control exists
Within the scope of the clamping of fixture；Then real-time detection apparatus (13), decelerating motor (6) are opened, rule of thumb reference value is selected
The counterweight for selecting suitable size is placed into force platform, then control motor drive slide, circumferentially guide rail moves upper test specimen point by point,
Tuning drive gear (5) and angle Circular gratings (2) record the angle value passed by real time, while real-time detection apparatus (13) real-time monitoring records
The displacement of size and power detection probe (9) decline of ambient pressure；To meet requirement of experiment, constantly change in test specimen elastic range
The size of variable force records angle change situation and probe decline displacement；Finally experimental basis is provided for equations.
4. two cylinder axis intersecting angle self-operated measuring unit of a kind of contact according to claim 1, feature exist
In: according to Hertzian contact theory, it is assumed that the circumference of two cylinder contact levels is an ellipse, and the pressure distribution on contact surface
It is, the section direction of vertically passing contact point directly proportional with the ordinate of the half ellipsoidal surface based on this ellipse, that is, assumes
P=p0{1-(x/a)2-(y/b)2}1/2
P in formula0It is the pressure intensity Mpa of central point；
A, b is the long axis and minor axis length mm of Contact Ellipse；
P is the suffered gross pressure N of two articles contact；
Wherein
If formula p=p0{1-(x/a)2-(y/b)2}1/2Pressure is reasonably distributed, then can solve
(k1+k2)πap0K (e)=h
In formulaμ is the Poisson's ratio of material, and E is the elasticity modulus of material；K (e), E (e) are
Using n/m as the complete elliptic integral of modulus, e is elliptical eccentricity
Above-mentioned K (e), E (e), e meet the following conditions
Contact zone is ellipse, and contact zone pressure is distributed as half of ellipsoid, after e is determined, acquires the short length half of Elliptical Contacts area
Axis a, b are determined by following formula
In elliptical contact, compression p at elliptical center0It is maximum
In elliptical contact, contact pressure is distributed as
So distance close to each other because of compression away from the quite remote any two points of O point in the common normal of contact point O
For i.e. contact gap
To sum up, which can conveniently control and measure two cylinder axis intersecting angle of contact, and to subsequent circle
The contact displacement of column contact, which solves, provides foundation.
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| CN201810314944.4A CN108571943B (en) | 2018-04-10 | 2018-04-10 | A kind of two cylinder axis intersecting angle self-operated measuring unit of contact |
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| CN108571943B true CN108571943B (en) | 2019-10-29 |
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| CN109870109B (en) * | 2019-04-15 | 2021-05-04 | 长春理工大学 | Two-dimensional grating displacement sensor measuring device |
| CN112504658B (en) * | 2021-02-04 | 2021-05-25 | 南京航空航天大学 | Axle center track testing system and method based on Doppler laser range finder |
| CN114062180B (en) * | 2021-10-25 | 2023-09-19 | 北京工业大学 | Tangential rigidity measuring device for two crossed parabolic cylinders |
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| JPS58190701A (en) * | 1982-04-30 | 1983-11-07 | Shizuo Hirano | Measuring instrument for crossing angle of sides |
| CN2670902Y (en) * | 2003-12-15 | 2005-01-12 | 西安理工大学 | Rotary kinematic angle displacement precision tester |
| CN101532931A (en) * | 2009-04-17 | 2009-09-16 | 中国科学院武汉岩土力学研究所 | Experimental method of simulating dynamic and static load and device thereof |
| CN102768021A (en) * | 2012-08-01 | 2012-11-07 | 安徽工业大学 | Contact-type cylinder diameter measurement device |
| CN202974240U (en) * | 2012-10-12 | 2013-06-05 | 成都飞机设计研究所 | Rudder clearance measurement device |
| CN106225724A (en) * | 2016-07-29 | 2016-12-14 | 厦门大学 | A kind of circular linkage error measuring means of band angle of revolution feedback function |
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2018
- 2018-04-10 CN CN201810314944.4A patent/CN108571943B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58190701A (en) * | 1982-04-30 | 1983-11-07 | Shizuo Hirano | Measuring instrument for crossing angle of sides |
| CN2670902Y (en) * | 2003-12-15 | 2005-01-12 | 西安理工大学 | Rotary kinematic angle displacement precision tester |
| CN101532931A (en) * | 2009-04-17 | 2009-09-16 | 中国科学院武汉岩土力学研究所 | Experimental method of simulating dynamic and static load and device thereof |
| CN102768021A (en) * | 2012-08-01 | 2012-11-07 | 安徽工业大学 | Contact-type cylinder diameter measurement device |
| CN202974240U (en) * | 2012-10-12 | 2013-06-05 | 成都飞机设计研究所 | Rudder clearance measurement device |
| CN106225724A (en) * | 2016-07-29 | 2016-12-14 | 厦门大学 | A kind of circular linkage error measuring means of band angle of revolution feedback function |
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