CN104849208B - A kind of frictional coefficient of fiber test device and its method of testing - Google Patents
A kind of frictional coefficient of fiber test device and its method of testing Download PDFInfo
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- CN104849208B CN104849208B CN201510315562.XA CN201510315562A CN104849208B CN 104849208 B CN104849208 B CN 104849208B CN 201510315562 A CN201510315562 A CN 201510315562A CN 104849208 B CN104849208 B CN 104849208B
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- 239000000835 fiber Substances 0.000 title claims abstract description 75
- 238000012360 testing method Methods 0.000 title claims abstract description 53
- 238000010998 test method Methods 0.000 title claims abstract description 10
- 238000005259 measurement Methods 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000007423 decrease Effects 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 238000005303 weighing Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 238000000418 atomic force spectrum Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000008041 oiling agent Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
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Abstract
The present invention relates to a kind of frictional coefficient of fiber test device and its method of testing.The test device includes friction roller, hook, the first clips, the second clips, the first stepper motor, force snesor, amplifier, the first pulsqe distributor, computer and its input-output equipment.Friction roller can be carried out by said structure and rotate test fibre frictoin.The test device can further comprise the second stepper motor, first gear, synchromesh gear belt, second gear, screw mandrel, spiral shell block, upper limiter, lower limiter, the second pulsqe distributor.Friction roller lifting test fibre frictoin can be also carried out by the additional structure.Apparatus of the present invention and method have the advantages that measuring accuracy height, testing efficiency are high, and can show Fluctuation of Dynamic Friction change curve in real time, automatically analyze frictional force variation size in frictional coefficient of fiber and test process.
Description
Technical field
The invention belongs to fibrous material measuring instrument field, particularly a kind of frictional coefficient of fiber test device and its test
Method.
Background technology
Frictional coefficient of fiber refers to the ratio between two frictional force contacted between surface and the vertical force acted in surface thereof
Value, it is relevant with the roughness of fiber surface, and unrelated with the size of contact area.Frictional coefficient of fiber and textile manufacturing and yarn
Line property relationship is very close.During fiber spun yarn, need to increase the friction between fiber in some cases, such as roller adds
Pressure, Yarn twisting etc.；Other occasions then need to reduce the friction between fiber, and such as chemical fiber oiling agent, fiber channel are bright and clean.
Fibre frictoin characteristic also affects the wearability such as the feel of its manufactured goods, pilling, wear-resisting, crease-resistant.Therefore, study fine
Tie up testing device for friction coefficient and its method of testing is significant.
Sieve get Shi methods (Roeder) being used current fibre friction coefficient testing method, its principle is with certain angle by fiber more
Degree is enclosed on friction roller, and fiber two ends apply equal tension, when reducing fiber one end tension force or pivoting friction roller, due to fibre
There is frictional force in dimension, fiber one end tension force can diminish, and the tension variation be measured by device for measuring force, according to Europe with surface of friction roller
Formula is drawn, calculating obtains frictional coefficient of fiber.Use the principle to test the instrument of frictional coefficient of fiber to rub with Y151 fiber types
Coefficient measuring instrument is representative, and its feature mainly drives friction roller to turn with individual event capacitor-run asynchronous motor and speed-changing gear box
It is dynamic, and weighing scale to test twisting force is borrowed as device for measuring force.The instrument can only set 8 grades of friction roller velocities of rotation by speed-changing gear box,
More velocities of rotation can not be provided, to study influence of the friction roller rotating speed to frictional coefficient of fiber.The instrument device for measuring force is used
Weighing scale to test twisting force, its force value resolution ratio relatively low (0.5 × 10-3CN), force measurement scope is smaller by (250 × 10-3CN), torsion is rotated
Balance handle and artificial range estimation reading are likely to result in operating error, and require higher to the qualification of operating personnel.Cause
This, according to the testing requirement of frictional coefficient of fiber, in the urgent need to a kind of frictional coefficient of fiber of electronic type is tested, force value precision is high
With range is big and friction roller velocity of rotation can by inputting the frictional coefficient of fiber tester that stepper motor frequency is accurately adjusted, with
Improve the test result degree of accuracy and testing efficiency.
The content of the invention
It is an object of the invention to provide a kind of frictional coefficient of fiber test device and its method of testing, mainly solve above-mentioned
The problems of prior art, its measuring accuracy is high, testing efficiency is high, and can show Fluctuation of Dynamic Friction change curve in real time,
Automatically analyze frictional force variation size in frictional coefficient of fiber and test process.
To achieve the above object, the present invention is realized in.
A kind of frictional coefficient of fiber test device, it is characterised in that：It includes friction roller, hook, the first clips, second
Clips, the first stepper motor, force snesor, amplifier, the first pulsqe distributor, computer and its input-output equipment；Its
In：The sample in angle of contact is hung with the friction roller；First clips clamp sample one end, and first clips are by hanging
Hook is connected with force snesor；The force value resolution ratio 0.25 × 10 of the force snesor-3Below cN, force measurement scope 1000 × 10- 3More than cN；The force snesor is further connected by amplifier with computer；Second clips are clamped the sample other end and made
Second clips freely hang over friction roller another side；The first step that the friction roller is controlled by computer by the first pulsqe distributor
Stepper motor driving is rotated.
Described frictional coefficient of fiber test device, it is characterised in that：The device further comprises the second stepper motor,
One gear, synchromesh gear belt, second gear, screw mandrel, spiral shell block, upper limiter, lower limiter, the second pulsqe distributor；Wherein：
The screw mandrel, which is erect, to be set and spiral shell block is set on screw mandrel, spiral shell block connection friction roller；The screw mandrel one end is connected by first gear, together
Walk gear band, the drive mechanism of second gear composition, the drive mechanism controlled by computer by the second pulsqe distributor the
Two stepping motor connection driving；The up and down path of the spiral shell block has upper limiter and lower limiter respectively.
Described frictional coefficient of fiber test device, it is characterised in that：The input-output equipment is display and/or printing
Machine.
A kind of frictional coefficient of fiber method of testing, it is characterised in that：It uses test device as described above, specific steps
Including：
The clips of A first and the second clips clamp the two ends of sample, then sample are hung on friction roller, the first clips
Hang on hook, the second clips freely hang over friction roller another side, now, ride and hang over sample two ends on friction roller by phase
Same tension force effect；
B carries out friction roller and rotates test fibre frictoin：
Computer drives the first stepper motor to drive friction roller to rotate by the first pulsqe distributor, because rubbing action rubs
Wipe roller strap and move sample and moved in surface of friction roller, the first clips weight is slowly loaded on hook, computer receive with
The load signal of the connected force snesor of hook and amplifier, display load-time curve in real time on an output device, to setting
After fixing time, friction roller stops operating；
C computer automatic analysis load-time curves, obtain the frictional force of fiber samples, are calculated according to Euler's formula
Frictional coefficient of fiber.
A kind of frictional coefficient of fiber method of testing, it is characterised in that：It uses test device as described above, specific steps
Including：
The clips of A first and the second clips clamp the two ends of sample, then sample are hung on friction roller, the first clips
Hang on hook, the second clips freely hang over friction roller another side, now, ride hang over sample two ends on friction roller by
Equal tension is acted on；
B1 carries out friction roller lifting test fibre frictoin：
Computer by the second pulsqe distributor drive the second stepper motor rotate, by first gear, synchromesh gear belt,
Second gear, screw mandrel, spiral shell block drive friction roller to be begun to decline at upper limit device, and the first clips weight is slowly loaded into extension
On hook, computer receives the load signal with linking up with the force snesor being connected and amplifier, on an output device during Real-time
Load-time curve is shown, to after setting time or the lower limiter position of arrival, friction roller stopping decline simultaneously rising to initial
Position；
C computer automatic analysis load-time curves, obtain the frictional force of fiber samples, are calculated according to Euler's formula
Frictional coefficient of fiber.
Advantages of the present invention is as follows compared with prior art：
1st, tradition machinery weighing scale to test twisting force force measuring method, instrument force value are replaced using highly sensitive force snesor in apparatus of the present invention
Resolution ratio 0.25 × 10-3Below cN, force measurement scope 1000 × 10-3More than cN；Old-fashioned weighing scale to test twisting force instrument force value resolution ratio
0.5×10-3CN, force measurement scope 250 × 10-3CN, the dynamometry precision and range of apparatus of the present invention are significantly improved, and this is to fibre
Dimension friction small value force measurement accuracy is particularly important.Instrument avoids old-fashioned instrument from rotating torsion day using High Precision Strength Measurement Sensor
The operating error that deuce handle and artificial range estimation reading are likely to result in.
2nd, the fiber friction force measurement of apparatus of the present invention has two ways available, including friction roller rotates test fiber
Friction and friction roller lifting two kinds of fibre frictoin of test, can need to carry out selection setting according to research work.
3rd, apparatus of the present invention can show change in friction force curve in measurement process in real time, and can be calculated test result
Machine is stored, and is easy to all kinds of new fiber materials frictional behaviour Comparative Studies.
4th, the friction roller velocity of rotation of apparatus of the present invention can accurately be adjusted by inputting stepper motor frequency, be conducive to rubbing
Wipe the research that roller velocity of rotation influences on frictional coefficient of fiber.
5th, test of the apparatus of the present invention available for two kinds of different length frictional coefficient of fibers of wool type and cotton, and legacy instrument
It is relatively difficult to 38mm cotton-type short fiber PVvalue testings.
Brief description of the drawings
Fig. 1 is the structural representation of the preferred embodiment of frictional coefficient of fiber test device one of the present invention.
In Fig. 1,1-sample, 2-friction roller, 3-hook, the 4-the first clips, the 5-the second clips, 6-first step
Stepper motor, 7-force snesor, 8-amplifier, the 9-the first stepper motor, 10-first gear, 11-synchromesh gear belt, 12-
Second gear, 13-screw mandrel, 14-spiral shell block, 15-upper limiter, 16-lower limiter, the 17-the first pulsqe distributor, 18-
Second pulsqe distributor, 19-computer, 20-display, 21-printer.
Fig. 2 is the schematic perspective view of apparatus of the present invention casing and guidance panel.
In Fig. 2,22-casing, 221-upper case, 2211-organic glass door, 222-lower case, 2221-potentiometer,
2222-SR, 2223-testing button, 2224-drop button, 2225-stop button, 2226-liter button, 2227-electricity
Source switch.
Embodiment
The present invention is further described below in conjunction with drawings and examples.
Referring to Fig. 1, it is a kind of structural representation of preferred embodiment of frictional coefficient of fiber test device one of the invention.
As shown in the figure：It include friction roller 2, hook the 3, first clips 4, the second clips 5, the first stepper motor 6, force snesor 7,
Amplifier 8, the first pulsqe distributor 17, computer 19 and its input-output equipment；Wherein：Hung with the friction roller 2 in encirclement
The sample 1 at angle；First clips 4 clamp the one end of sample 1, and first clips 4 are connected by hook 3 with force snesor 7；
The force value resolution ratio 0.25 × 10 of the force snesor 7-3Below cN, force measurement scope 1000 × 10-3More than cN；The power is sensed
Device 7 is further connected by amplifier 8 with computer 19；Second clips 4 clamp the other end of sample 1 and make the second clips
4 freely hang over the another side of friction roller 2；The first stepping that the friction roller 2 is controlled by computer 19 by the first pulsqe distributor 17
The driving of motor 6 is rotated.The input-output equipment is display 20 and/or printer 21.
Using test device as described above, specific steps include：
A the first clips 4 and the second clips 5 clamp the two ends of sample 1, then sample 1 are hung on friction roller 2, first
Clips 4 hang over hook 3 on, the second clips 5 freely hang over the another side of friction roller 2, now, ride hang on friction roller 2 examination
The two ends of sample 1 are acted on by equal tension；
B carries out friction roller and rotates test fibre frictoin (standing test event)：
Computer 19 drives the first stepper motor 6 to drive friction roller 2 to rotate by the first pulsqe distributor 17, due to friction
Acting on friction roller 2 drives sample 1 to be moved in surface of friction roller, and the weight of the first clips 4 is slowly loaded on hook 3, calculates
Machine 19 receives the load signal of the force snesor 7 being connected with hook 3 and amplifier 8, and display is negative in real time on an output device
Lotus-time graph, to after setting time, friction roller 2 stops operating；
C computers 19 automatically analyze load-time curve, obtain the frictional force of fiber samples 1, according to Euler's formula meter
Calculate frictional coefficient of fiber.
Euler's formula is as follows：
In formula：f0、f1Tension force, f suffered by fiber two ends on friction roller are hung over to ride0Equal to the load of clips 5；μ is fiber
With the coefficient of friction of surface of friction roller；θ is fiber and the contact angle (Rad) of surface of friction roller；E is natural constant.f1Deng
In f0With f2Difference, wherein, f2Load is measured for device for measuring force.
When fiber and the contact angle θ of surface of friction roller are equal to π, frictional coefficient of fiber μ is：
Further referring to Fig. 1, as the presently preferred embodiments, the device can further comprise the second stepper motor 9, the first tooth
Wheel 10, synchromesh gear belt 11, second gear 12, screw mandrel 13, spiral shell block 14, upper limiter 15, lower limiter 16, the second pulse distribution
Device 18；Wherein：The screw mandrel 13, which is erect, to be set and spiral shell block 14 is set on screw mandrel 13, the spiral shell block 14 connection friction roller 2；The screw mandrel 13
The drive mechanism that one end connection is made up of first gear 10, synchromesh gear belt 11, second gear 12, the drive mechanism is by computer
19 the second stepper motors 9 controlled by the second pulsqe distributor 18, which are connected, to be driven；The up and down path difference of the spiral shell block 14
With upper limiter 15 and lower limiter 16.
Test device as described above, specific steps include：
A the first clips 4 and the second clips 5 clamp the two ends of sample 1, then sample 1 are hung on friction roller 2, first
Clips 4 hang over hook 3 on, the second clips 5 freely hang over the another side of friction roller 2, now, ride hang on friction roller 2 examination
The two ends of sample 1 are acted on by equal tension；
B carries out friction roller and rotates test fibre frictoin
Computer 19 drives the first stepper motor 6 to drive friction roller 2 to rotate by the first pulsqe distributor 17, due to friction
Acting on friction roller 2 drives sample 1 to be moved in surface of friction roller, and the weight of the first clips 4 is slowly loaded on hook 3, calculates
Machine 19 receives the load signal of the force snesor 7 being connected with hook 3 and amplifier 8, and display is negative in real time on an output device
Lotus-time graph, to after setting time, friction roller 2 stops operating；
C computers 19 automatically analyze load-time curve, obtain the frictional force of fiber samples 1, according to Euler's formula meter
Calculate frictional coefficient of fiber.
B1 carries out friction roller lifting test fibre frictoin (optional test event)：
Computer 19 drives the second stepper motor 9 to rotate by the second pulsqe distributor 18, by first gear 10, synchronously
Gear band 11, second gear 12, screw mandrel 13, spiral shell block 14 drive friction roller 2 to be begun to decline at upper limit device 15, the first clips
4 weight are slowly loaded on hook 3, and the load that computer 19 receives with linking up with the force snesor 7 being connected and amplifier 8 is believed
Number, load-time curve is shown during Real-time on an output device, to after setting time or the lower position of limiter 16 of arrival, is rubbed
Roller 2 is wiped to stop declining and rising to initial position；
C computers 19 automatically analyze load-time curve, obtain the frictional force of fiber samples 1, according to Euler's formula meter
Calculate frictional coefficient of fiber.
Fig. 2 is apparatus of the present invention casing and guidance panel, and it acts on the electric member being easy in control test, protection device
Part simultaneously ensures test environment.
In summary be only presently preferred embodiments of the present invention, not for limit the present invention practical range.It is i.e. all
The equivalent changes and modifications made according to the content of scope of the present invention patent, all should be the technology category of the present invention.
Claims (4)
1. a kind of frictional coefficient of fiber test device, it is characterised in that：It includes friction roller (2), hook (3), the first clips
(4), the second clips (5), the first stepper motor (6), force snesor (7), amplifier (8), the first pulsqe distributor (17), meter
Calculation machine (19) and its input-output equipment；Wherein：The sample (1) in angle of contact is hung with the friction roller (2)；First clips
(4) sample (1) one end is clamped, and first clips (4) are connected by linking up with (3) with force snesor (7)；The force snesor
(7) force value resolution ratio 0.25 × 10-3Below cN, force measurement scope 1000 × 10-3More than cN；The force snesor (7) enters one
Step is connected by amplifier (8) with computer (19)；Second clips (5) clamp sample (1) other end and make the second tension force
Folder (5) freely hangs over friction roller (2) another side；The friction roller (2) is controlled by computer (19) by the first pulsqe distributor (17)
The first stepper motor (6) driving of system is rotated；
The device further comprise the second stepper motor (9), first gear (10), synchromesh gear belt (11), second gear (12),
Screw mandrel (13), spiral shell block (14), upper limiter (15), lower limiter (16), the second pulsqe distributor (18)；Wherein：The screw mandrel
(13) erect and set and spiral shell block (14), the spiral shell block (14) connection friction roller (2) are set on screw mandrel (13)；Screw mandrel (13) one end
The drive mechanism being made up of first gear (10), synchromesh gear belt (11), second gear (12) is connected, the drive mechanism is by calculating
The second stepper motor (9) that machine (19) is controlled by the second pulsqe distributor (18), which is connected, to be driven；Spiral shell block (14) live up and down
Dynamic path has upper limiter (15) and lower limiter (16) respectively.
2. frictional coefficient of fiber test device according to claim 1, it is characterised in that：The input-output equipment is display
Device (20) and/or printer (21).
3. a kind of frictional coefficient of fiber method of testing, it is characterised in that：It uses test device as claimed in claim 1, tool
Body step includes：
The clips of A first (4) and the second clips (5) clamp the two ends of sample (1), then sample (1) is hung over friction roller (2)
On, the first clips (4) are hung on hook (3), and the second clips (5) freely hang over friction roller (2) another side, now, ride extension
Sample (1) two ends on friction roller (2) are acted on by equal tension；
B carries out friction roller and rotates test fibre frictoin：
Computer (19) drives the first stepper motor (6) to drive friction roller (2) to rotate by the first pulsqe distributor (17), due to
Rubbing action friction roller (2) drives sample (1) to be moved in surface of friction roller, and the first clips (4) weight is slowly loaded into extension
On hook (3), computer (19) receives the load signal of the force snesor (7) being connected with hook (3) and amplifier (8), defeated
Enter and show load-time curve on output equipment in real time, to after setting time, friction roller (2) stops operating；
C computers (19) automatically analyze load-time curve, obtain the frictional force of fiber samples (1), according to Euler's formula meter
Calculate frictional coefficient of fiber.
4. a kind of frictional coefficient of fiber method of testing, it is characterised in that：It uses test device as claimed in claim 1, tool
Body step includes：
The clips of A first (4) and the second clips (5) clamp the two ends of sample (1), then sample (1) is hung over friction roller (2)
On, the first clips (4) are hung on hook (3), and the second clips (5) freely hang over friction roller (2) another side, now, ride extension
Sample (1) two ends on friction roller (2) are acted on by equal tension；
B1 carries out friction roller lifting test fibre frictoin：
Computer (19) by the second pulsqe distributor (18) drive the second stepper motor (9) rotate, by first gear (10),
Synchromesh gear belt (11), second gear (12), screw mandrel (13), spiral shell block (14) drive friction roller (2) to be opened from upper limiter (15)
Begin to decline, the first clips (4) weight is slowly loaded on hook (3), computer (19) is received with linking up with the power being connected
The load signal of sensor (7) and amplifier (8), shows load-time curve, to setting in real time on input-output equipment
Time is reached behind lower limiter (16) position, and friction roller (2) stops declining and rising to initial position；
C computers (19) automatically analyze load-time curve, obtain the frictional force of fiber samples (1), according to Euler's formula meter
Calculate frictional coefficient of fiber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510315562.XA CN104849208B (en) | 2015-06-10 | 2015-06-10 | A kind of frictional coefficient of fiber test device and its method of testing |
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| CN201510315562.XA CN104849208B (en) | 2015-06-10 | 2015-06-10 | A kind of frictional coefficient of fiber test device and its method of testing |
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| CN104849208B true CN104849208B (en) | 2017-09-05 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6169813B1 (en) * | 2016-06-22 | 2017-07-26 | 一般財団法人カケンテストセンター | Water content dependent friction force measuring device and water content dependent friction force measuring method |
| CN105910982B (en) * | 2016-06-24 | 2018-10-30 | 中国矿业大学 | A method of elevator friction lining friction coefficient is measured based on cambered surface method |
| CN106092797A (en) * | 2016-07-29 | 2016-11-09 | 中国石化仪征化纤有限责任公司 | Monofilament method chopped fiber wear resistance testing device |
| CN106442310A (en) * | 2016-09-30 | 2017-02-22 | 天津工业大学 | Filament and yarn friction coefficient tester |
| CN107727743A (en) * | 2017-10-30 | 2018-02-23 | 上海凯历迪新材料科技股份有限公司 | A kind of dynamic fiber degree of orientation measuring instrument and the method for measuring the dynamic fiber degree of orientation |
| CN108680498A (en) * | 2018-08-10 | 2018-10-19 | 江苏恒神股份有限公司 | A kind of carbon fiber friction coefficient testing device and method |
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