CN109612925A - A kind of vertical measuring device and measuring method of prepreg friction coefficient - Google Patents
A kind of vertical measuring device and measuring method of prepreg friction coefficient Download PDFInfo
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- CN109612925A CN109612925A CN201910058927.3A CN201910058927A CN109612925A CN 109612925 A CN109612925 A CN 109612925A CN 201910058927 A CN201910058927 A CN 201910058927A CN 109612925 A CN109612925 A CN 109612925A
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- 238000005259 measurement Methods 0.000 claims description 25
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- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/02—Measuring coefficient of friction between materials
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Abstract
The present invention provides a kind of vertical measuring device and measuring method of prepreg cloth coefficient of friction, which includes support frame, the workbench being set on support frame, pressure module, oriented module and the traction module for connecting support frame.Workbench is for fixing prepreg cloth；Pressure module includes pressure adjusting module and the friction pair for being removably connected to pressure adjusting module, and pressure adjusting module adjusts the secondary pressure size of friction；Oriented module includes the Z-direction sliding equipment that the X that workbench can be made to be slided in the horizontal direction slides pressure module along the vertical direction；Traction module has a vertically moving traction mechanism, for drawing pressure module along Z-direction vertical motion, generates relative motion with the prepreg cloth in dynamic friction pair and workbench.The configuration of the present invention is simple, by fixing prepreg cloth under vertical state, mobile friction plate measures, and increases the stability and diversity of dynamic friction coefficient measurement method.
Description
Technical field
The present invention relates to physics facility fields, measure vertically in particular to a kind of prepreg cloth dynamic friction coefficient
Device and measurement method.
Background technique
The frictional behaviour of material is one of its very important performance, is divided with the property of movement, there is force of sliding friction, rolling
Kinetic force of friction and stiction.Dynamic friction coefficient is when the object being in contact with each other does relative motion between frictional force and normal pressure
Ratio.The measuring device multiplicity of current dynamic friction coefficient, but mostly all it is level measurement device, and structure is complicated, maintenance
It is inconvenient with repairing.The measurement device of current dynamic friction coefficient is usually that workpiece for measurement is put in test plane, is made using external force
Workpiece for measurement carries out relative motion relative to test plane, obtains related experiment parameter with this, and then obtain the friction system of workpiece
Number, measurement method are single；And material is fixed unstable during the motion or is influenced by external force, inevitably will appear curved
Situations such as song, fold, flanging, influences the accuracy of measurement result.
Summary of the invention
The present invention provides a kind of devices, it is intended to which improving existing dynamic friction coefficient measuring device, structure is complicated, measurement side
The problem of single, the fixed shakiness of formula.
The present invention is implemented as follows:
The present invention proposes a kind of vertical measuring device of prepreg cloth coefficient of friction, including support frame, is set to the support
Workbench, pressure module, oriented module on frame and the traction module for connecting support frame as described above, wherein support frame as described above packet
Pedestal and the frame for being fixedly connected on the pedestal are included, the pedestal connects the traction module, and the frame connects the work
Make platform, pressure module and oriented module；The workbench is for fixing the prepreg cloth；The pressure module includes that pressure is adjusted
Module and the friction pair for being removably connected to the pressure adjusting module, the friction it is secondary in measurement process with the workbench
On prepreg cloth abut against to form a rubbing surface, the pressure adjusting module adjusts the secondary size that presses of the friction；The guiding
Module includes that the X that the workbench can be made to be slided in the horizontal direction makes the pressure module along perpendicular to sliding equipment and enough
Histogram is to the Z-direction sliding equipment slided, and the workbench connects the X to sliding equipment, and the pressure module connects institute
State Z-direction sliding equipment；The traction module has a vertically moving traction mechanism, for drawing the pressure module
Along Z-direction vertical motion, the secondary prepreg cloth on the workbench of the friction is driven to generate relative motion.
Further, in preferred embodiments of the present invention, the pressure adjusting module includes fixed frame 11) and be set to
Several elastic components and locking member in the fixed frame, the fixed frame connect the frame, and the elastic component is fixed on described
Fixed frame, with fixed frame friction is secondary to apply elastic force to connecting, the locking member control the decrement of the elastic component with
Adjust the size of the elastic force.
Further, in preferred embodiments of the present invention, the friction is secondary to have one to rub with what the prepreg cloth contacted
Wiping board and fixed plate for connecting with the pressure adjusting module, the friction plate and the fixed plate junction are provided with down
Angle, the friction plate and the area of work ratio are 1:3~1:5.
Further, in preferred embodiments of the present invention, the traction module is a mechanical stretch machine.
Further, in preferred embodiments of the present invention, one end of the pressure module is equipped with a fixed part, the power
The wirerope for learning stretching-machine is connected to the fixed part, vertically moving to draw the pressure module.
Further, in preferred embodiments of the present invention, the workbench and friction pair are by transparent material system
At.
Further, in preferred embodiments of the present invention, clamping element is additionally provided on the workbench, the prepreg cloth is logical
The clamping element is crossed to be fixed on the workbench.
Further, in preferred embodiments of the present invention, the frame is equipped with fixed pin, the pressure adjusting module
On be additionally provided with X to limit plate and Z-direction limit plate, the X is provided with several pin holes on limit plate and Z-direction limit plate, described
Fixed pin is matched with the pin hole, is limited to the pressure adjusting module.
Further, in preferred embodiments of the present invention, the X includes X to sliding equipment to be connected to sliding rail and sliding
X of the X on sliding rail is connected to sliding block, the workbench is fixedly connected on the X to sliding block, the Z-direction sliding equipment packet
The Z-direction sliding block for including Z-direction sliding rail and being slidably connected on the Z-direction sliding rail, the pressure adjusting module are fixedly connected on the Z
To sliding block.
The present invention also proposes a kind of measurement method of prepreg cloth dynamic friction coefficient, and rubbing using foregoing prepreg cloth is
The vertical measuring device of number, comprising the following steps:
Prepreg cloth to be measured is fixed on the workbench by S1；
S2 slides the workbench for being fixed with prepreg cloth and the pressure module along X to sliding equipment and Z-direction respectively
Mechanism moves into test site, and the test site is located at the crossover position of the Z-direction sliding equipment and the X to sliding equipment；
S3 adjusts the pressure module and applies preset positive pressure value N, the fixed workbench to prepreg cloth；
S4, the traction module draw the pressure module along Z-direction vertical motion, drive the friction secondary and the work
Prepreg cloth on platform generates relative motion, keeps the area of friction surface constant in motion process；
S5 measures the tractive force size F during the pressure module uniform motion, and then the dynamic of prepreg cloth is calculated
Coefficient of friction is shown below:
μ k=(F-mg)/N
Wherein, μ k is dynamic friction coefficient；M is the quality of pressure module, kg；G is acceleration of gravity, m/s2；F is traction
Power, N；N is normal pressure, N.
The beneficial effects of the present invention are:
(1) the vertical measuring device for the prepreg cloth dynamic friction coefficient that the present invention obtains by above-mentioned design, structure is simple, makes
Used time has filled up this blank of vertical measurement method, has increased dynamic friction system by testing material under vertical state
The diversity of number measurement method；
(2) present invention is moved by the prepreg cloth to be measured on stationary work-table using traction module traction friction plate,
Preimpregnation cloth holder to be measured can be made more firm, effectively avoid detected materials fixed shakiness, surface folding, pressure during the motion
Influence of the experimental errors such as side to measurement result improves the stability and accuracy of measurement result；
(3) present invention can freely adjust friction pair and high molecular material in a certain range by the pressure adjusting module
The normal pressure size of contact surface, takes multiple measurements material under different normal pressures, is conducive to improve measurement result
Accuracy；The secondary pressure shape of friction and the change freedom degree of area are big, are conducive to study boundary condition to the shadow of friction mechanism
It rings.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of embodiment of the present invention
Attached drawing be briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not to be seen as
It is the restriction to range, it for those of ordinary skill in the art, without creative efforts, can be with root
Other relevant attached drawings are obtained according to these attached drawings.
Fig. 1 is the structural schematic diagram of the vertical measuring device for the prepreg cloth dynamic friction coefficient that the embodiment of the present invention 1 provides；
Fig. 2,3 are that the partial structurtes of vertical measuring device of the prepreg cloth dynamic friction coefficient that the embodiment of the present invention 1 provides are shown
It is intended to (concealing traction module)；
Fig. 4 is the partial enlargement diagram in Fig. 3 at A；
Fig. 5 is the diagrammatic cross-section of pressure module in the embodiment of the present invention 1；
Fig. 6 is the secondary structural schematic diagram that rubs in the embodiment of the present invention 1.
Icon: 1- support frame；11- pedestal；12- frame；13- fixed pin；2- workbench；21- clamping element；3- pressure mould
Block；31- pressure adjusting module；311- fixed frame；312- elastic component；313- locking member；314- fixed part；315-X is to limit plate；
316-Z is to limit plate；317- pin hole；32- friction is secondary；321- friction plate；322- fixed plate；323- chamfering；4- oriented module；
41-X is to sliding equipment；411-X is to sliding rail；412-X is to sliding block；42-Z is to sliding equipment；421-Z is to sliding rail；422-Z is to cunning
Block；5- traction module.
Specific embodiment
To keep the purposes, technical schemes and advantages of embodiment of the present invention clearer, implement below in conjunction with the present invention
The technical solution in embodiment of the present invention is clearly and completely described in attached drawing in mode, it is clear that described reality
The mode of applying is some embodiments of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ability
Domain those of ordinary skill every other embodiment obtained without creative efforts, belongs to the present invention
The range of protection.Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit below and is wanted
The scope of the present invention of protection is sought, but is merely representative of selected embodiment of the invention.Based on the embodiment in the present invention,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts belongs to this
Invent the range of protection.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
The description present invention and simplified description, rather than the equipment of indication or suggestion meaning or element must have a particular orientation, with spy
Fixed orientation construction and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
Embodiment 1
Referring to Fig.1, shown in 2, a kind of vertical measuring device of prepreg cloth coefficient of friction, including support are present embodiments provided
Frame 1, the workbench 2 being set on support frame as described above 1, pressure module 3, oriented module 4 and the traction for connecting support frame as described above 1
Module 5.The present apparatus applies normal pressure to the prepreg cloth on the workbench 2 using pressure module 3, in the effect of traction module 5
Under make the pressure module 3 that relative motion occur with the prepreg cloth, by obtaining relevant parameter, high molecular material is calculated
The size of coefficient of friction.The configuration of the present invention is simple is convenient for R and M, and cost is relatively low, is also beneficial to subsequent temperature conditioning unit
It is added.By the prepreg cloth to be measured on stationary work-table 2, pressure module 3 is drawn using traction module 5 and is moved, can be made
Preimpregnation cloth holder to be measured is more firm, and effectively avoiding detected materials, fixed shakiness, surface folding, flanging etc. are real during the motion
Influence of the error to measurement result is tested, the stability and accuracy of measurement result are improved.
Referring to Fig.1 shown in -3, support frame as described above 1 includes pedestal 11 and the frame 12 for being fixedly connected on the pedestal 11, institute
It states pedestal 11 and connects the traction module 5, the frame 12 connects the workbench 2, pressure module 3 and oriented module 4.It is described
Workbench 2 is for fixing the prepreg cloth.The pressure module 3 includes pressure adjusting module 31 and is removably connected to the pressure
The friction pair 32 of power adjustment module 31, the friction pair 32 abut against in measurement process with the prepreg cloth on the workbench 2
A rubbing surface is formed, the pressure adjusting module 31 adjusts the 32 pressure size of friction pair；The oriented module 4 includes can
The X for sliding the workbench 2 in the horizontal direction make to sliding equipment 41 and enough the pressure module 3 along the vertical direction into
The Z-direction sliding equipment 42 of row sliding, the workbench 2 connect the X to sliding equipment 41, and the pressure module 3 connects the Z
To sliding equipment 42.The traction module 5 has a vertically moving traction mechanism, for drawing the pressure module
3, along Z-direction vertical motion, drive the friction pair 32 to generate relative motion with the prepreg cloth on the workbench 2.In test process
In, the traction module 5 draws the pressure module 3 along the vertical direction with certain speed uniform motion, keeps the friction secondary
32 occur relative motion with the prepreg cloth on the workbench 2, so that material be made to be tested under vertical state, have filled up perpendicular
This blank of straight measurement method, increases the diversity of dynamic friction coefficient measurement method.
Optionally, refering to what is shown in Fig. 1, the traction module 5 is a mechanical stretch machine.The mechanical stretch machine has an edge
The draw beam of vertical direction movement, the draw beam connect the pressure module 3 by a wirerope, for being the pressure mould
Block 3 provides tractive force, to drive the friction plate 321 to rub in pair 32 and the prepreg cloth and relative motion occurs.It can
Choosing, the mechanical stretch machine is equipped with stress strain gauge, can obtain the support by the stress strain gauge
The tractive force size of frame 1.
Optionally, refering to what is shown in Fig. 3, one end of the pressure module 3 is equipped with a fixed part 314, the mechanical stretch machine
Wirerope be connected to the fixed part 314, it is vertically moving to draw the pressure module 3.It is drawn by setting mechanics
The tensile speed of machine is stretched, material can be made to take multiple measurements under different motion speed, is conducive to improve the accurate of measurement result
Property.
Optionally, refering to what is shown in Fig. 1, being additionally provided with clamping element 21 on the workbench 2, the prepreg cloth passes through the clamping
Part 21 is fixed on the workbench 2.Optionally, the clamping element 21 can be frame of section bar, and the prepreg cloth passes through frame of section bar
Compression bar be clamped on the workbench 2, be also possible to other clamping pieces such as fixture, as long as being able to achieve the clamping of material,
Applied to the present invention.
Optionally, with reference to shown in Fig. 1,6, the workbench 2 and friction pair 32 are made of clear material.Transparent
Structure is conducive to observe material in the observation window of the fixed frame 311 in extruding and relative movement using optics rheometer
The variation of middle generation, the influence of phenomena such as probing into fever during fricting movement, abrasion to the variation of material surface pattern, with
It is convenient for further experimental study.Optionally, the transparent material is acrylic board.Acrylic board is at low cost, translucency
It can good, impact resistance and easy to clean.Optionally, other transparent materials such as polystyrene, polycarbonate etc., as long as being able to achieve this hair
Bright application effect, can be applied to the present invention.
Optionally, with reference to shown in Fig. 4,5, the pressure adjusting module 31 includes fixed frame 311 and is set to the fixation
Several elastic components 312 and locking member 313 in frame 311, the fixed frame 311 connect the frame 12, and the elastic component 312 is solid
Due to the fixed frame 311, to apply elastic force to connecting the fixed frame 311 pair 32 that rubs, the locking member 313 controls institute
The decrement of elastic component 312 is stated to adjust the size of the elastic force.Optionally, on the basis without departing from the technology of the present invention thinking
On, other pressure-regulating devices such as pressure-control valve, pressure controller etc. also can be applied to the present invention.
Optionally, with reference to shown in Fig. 4,5, in the present embodiment, the fixed frame 311 is built by several profiled bars,
The profiled bars include several X to bar, Y-direction bar and Z-direction bar, and the X is mutually interconnected to bar, Y-direction bar and Z-direction bar by a connection piece
It connects, forms the fixed frame 311 with frame structure.Several elastic components 312 and locking member 313 are fixed on the fixed frame
The X of 311 bottoms reserves an observation window in the middle part of the fixed frame 311 to bar and/or Z-direction bar.Optionally, the connector
Can be the matched accessory of punching tapping, corner fittings is connected with bolt and nut, right angle or chamfered groove connector etc., the present invention is not done specifically
It limits.
Optionally, with reference to shown in Fig. 4,5, the elastic component 312 is compressed spring, and the compressed spring is fixed on described solid
Determine frame 311, the friction pair 32 connects the fixed frame 311 by the fixed plate 322, and the locking member 313 includes wearing
In bolt, gasket and the locking nut for cooperating the bolt in the compressed spring.The gasket is arranged in the locking
Between nut and the spring, the decrement size of the spring can change by locking nut described in turn, thus to institute
It states friction plate 321 and applies elastic force, the elastic force can be calculated by obtaining the decrement of elastic component 312.Optionally, originally
Locking nut in embodiment includes the first locking nut and the second locking nut, and first locking nut is used for and the spiral shell
Bolt, gasket are matched to be adjusted with the decrement to the compressed spring.The fixed frame 311 is equipped with and the bolt phase
The through-hole of cooperation, the bolt are arranged in the through-hole and are fixed on the fixed frame 311 by second locking nut.
Optionally, the elastic component 312 in the present embodiment is compressed spring, and but not limited to this, other can change pressure
The elastic component 312 of size can be applied to the present invention as long as can achieve the effect that the present embodiment.By adjusting the elastic force
Size, thus it is possible to vary normal pressure size suffered by the high molecular material in a certain range, can allow material it is different just
It is taken multiple measurements under pressure, is conducive to the accuracy for improving measurement result.
Optionally, refering to what is shown in Fig. 6, friction pair 32 has a friction plate 321 contacted with the prepreg cloth and uses
In the fixed plate 322 connecting with the pressure adjusting module 31, the friction plate 321 is arranged with 322 junction of fixed plate
There is chamfering 323, so as to effectively avoid sharpened surface and material from generating scratch-resistant, reduces the accuracy to measurement result.
The friction plate 321 is 1:3~1:5 with 2 area ratio of workbench.So as to easily be carried out more to the friction pair 32
Change, friction pair 32 press shape and area change freedom degree it is big, convenient for investigate in friction pair 32 different shape of rubbing surface and
Influence of the size to friction coefficient measurement result is conducive to study influence of the boundary condition to friction mechanism.
Optionally, with reference to shown in Fig. 3,4, the module 3 that presses in order to prevent is shaken before testing, needs to limit it
Position.The frame 12 is equipped with fixed pin 13, is additionally provided with X to limit plate 315 and Z-direction limit plate on the pressure adjusting module 31
316, the X are provided with several pin holes 317, the fixed pin 13 and the pin on limit plate 315 and Z-direction limit plate 316
Hole 317 matches, and limits to the pressure adjusting module 31.Under non-test mode, by the bolt of fixed pin 13 be inserted into X to
In pin hole 317 on limit plate 315, with limit the pressure module 3 X to freedom degree, the bolt of fixed pin 13 is inserted into Z
In pin hole 317 on limit plate 316, to limit the pressure module 3 in the freedom degree of Z-direction.
Optionally, refering to what is shown in Fig. 1, the X to sliding rail 411 and is slidably connected to the X including X to sliding equipment 41
For X on sliding rail 411 to sliding block 412, the workbench 2 is fixedly connected on the X to sliding block 412, the Z-direction sliding equipment 42
Including Z-direction sliding rail 421 and the Z-direction sliding block 422 being slidably connected on the Z-direction sliding rail 421, the pressure adjusting module 31 is solid
Surely it is connected to the Z-direction sliding block 422.Optionally, other kinds of oriented module 4, such as ball lead screw drive mechanism, rack-and-pinion
Transmission mechanism can also be applied to the present invention.
The present embodiment additionally provides a kind of measurement method of prepreg cloth dynamic friction coefficient, rubs using prepreg cloth as described above
Wipe the vertical measuring device of coefficient, comprising the following steps:
Prepreg cloth to be measured is fixed on the workbench 2 by S1.Optionally, by with clamping element 21 to the prepreg cloth
It is fixed, the clamping element 21 can be frame of section bar, and the prepreg cloth is clamped in the workbench 2 by the compression bar of frame of section bar
On, it is also possible to other elements with clamping function, the present invention is not specifically limited.
S2, by the workbench 2 for being fixed with prepreg cloth and the pressure module 3 respectively along X to sliding equipment 41 and Z-direction
Sliding equipment 42 moves into test site, and the test site is located at the Z-direction sliding equipment 42 and the X to sliding equipment 41
Crossover position.Respectively in the pin hole 317 by the bolt insertion X of fixed pin 13 on limit plate 315 and Z-direction limit plate 316, with limit
The pressure module 3 is made in X to the freedom degree with Z-direction, is occurred to further avoid the pressure module 3 described in measurement process
It shakes.
S3 adjusts the pressure module 3 and applies preset positive pressure value N, the fixed workbench 2 to prepreg cloth.It is optional
, it can be taken multiple measurements by setting different positive pressure values, reduce the measurement error of device, keep measurement result more quasi-
Really.
S4, the traction module 5 draw the pressure module 3 along Z-direction vertical motion, drive the friction secondary 32 with it is described
Prepreg cloth on workbench 2 generates relative motion, keeps the area of friction surface constant in motion process；
S5 measures the tractive force size F during pressure 3 uniform motion of module, and then prepreg cloth is calculated
Dynamic friction coefficient is shown below:
μ k=(F-mg)/N
Wherein, μ k is dynamic friction coefficient；M is the quality of pressure module, kg；G is acceleration of gravity, m/s2；F is traction
Power, N；N is normal pressure, N.Wherein, tractive force F can be obtained by mechanics sensor, and normal pressure N can pass through the elastic component 312
Decrement conversion obtain.
The foregoing is merely the preferred embodiment of the present invention, are not intended to restrict the invention, for this field
For technical staff, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any
Modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of vertical measuring device of prepreg cloth coefficient of friction, which is characterized in that including support frame (1), be set to the branch
Workbench (2), pressure module (3), oriented module (4) on support (1) and the traction module of connection support frame as described above (1)
(5), wherein support frame as described above (1) includes pedestal (11) and the frame (12) for being fixedly connected on the pedestal (11), the pedestal
(11) traction module (5) is connected, the frame (12) connects the workbench (2), pressure module (3) and oriented module
(4)；The workbench (2) is for fixing the prepreg cloth；The pressure module (3) includes pressure adjusting module (31) and removable
Unload be connected to the pressure adjusting module (31) friction it is secondary (32), the friction pair (32) in measurement process with the work
Prepreg cloth on platform (2) abuts against to form a rubbing surface, and the pressure adjusting module (31) adjusts the friction secondary (32) pressure
Size；The oriented module (4) include the workbench (2) can be made to be slided in the horizontal direction X to sliding equipment
(41) and enough the Z-direction sliding equipment (42) for sliding pressure module (3) along the vertical direction, the workbench (2) is even
The X is met to sliding equipment (41), the pressure module (3) connects the Z-direction sliding equipment (42)；The traction module (5)
With a vertically moving traction mechanism, for drawing the pressure module (3) along Z-direction vertical motion, described in drive
The prepreg cloth to rub on secondary (32) and the workbench (2) generates relative motion.
2. the vertical measuring device of prepreg cloth coefficient of friction according to claim 1, which is characterized in that the pressure adjusts mould
Block (31) includes fixed frame (311) and several elastic components (312) and locking member (313) that are set in the fixed frame (311),
The fixed frame (311) connects the frame (12), and the elastic component (312) is fixed on the fixed frame (311), to connection
Fixed frame (311) friction secondary (32) applies elastic force, and the locking member (313) controls the compression of the elastic component (312)
It measures to adjust the size of the elastic force.
3. the vertical measuring device of prepreg cloth coefficient of friction according to claim 1, which is characterized in that the friction is secondary (32)
The friction plate (321) contacted with one with the prepreg cloth and the fixed plate for being connect with the pressure adjusting module (31)
(322), the friction plate (321) and the fixed plate (322) junction are provided with chamfering (323), the friction plate (321) with
Workbench (2) area ratio is 1:3~1:5.
4. the vertical measuring device of prepreg cloth coefficient of friction according to claim 1, which is characterized in that the traction module
It (5) is a mechanical stretch machine.
5. the vertical measuring device of prepreg cloth coefficient of friction according to claim 4, which is characterized in that the pressure module
(3) one end is equipped with a fixed part (314), and the wirerope of the mechanical stretch machine is connected to the fixed part (314), with traction
The pressure module (3) is vertically moving.
6. the vertical measuring device of prepreg cloth coefficient of friction according to claim 1, which is characterized in that the workbench (2)
It is made of clear material with the friction secondary (32).
7. the vertical measuring device of prepreg cloth coefficient of friction according to claim 1, which is characterized in that the workbench (2)
On be additionally provided with clamping element (21), the prepreg cloth is fixed on the workbench (2) by the clamping element (21).
8. the vertical measuring device of prepreg cloth coefficient of friction according to claim 1, which is characterized in that on the frame (12)
Equipped with fixed pin (13), X is additionally provided on the pressure adjusting module (31) to limit plate (315) and Z-direction limit plate (316), institute
X is stated to be provided with several pin holes (317) on limit plate (315) and Z-direction limit plate (316), the fixed pin (13) with it is described
Pin hole (317) matches, and limits to the pressure adjusting module (31).
9. the vertical measuring device of prepreg cloth coefficient of friction according to claim 1, which is characterized in that the X is to skate machine
Structure (41) includes X to sliding rail (411) and is slidably connected to X of the X on sliding rail (411) to sliding block (412), the work
Platform (2) is fixedly connected on the X to sliding block (412), and the Z-direction sliding equipment (42) includes that Z-direction sliding rail (421) and sliding connect
The Z-direction sliding block (422) being connected on the Z-direction sliding rail (421), it is sliding that the pressure adjusting module (31) is fixedly connected on the Z-direction
Block (422).
10. a kind of measurement method of prepreg cloth dynamic friction coefficient, which is characterized in that application is as described in claim any one of 1-9
The vertical measuring device of prepreg cloth coefficient of friction, comprising the following steps:
Prepreg cloth to be measured is fixed on the workbench (2) by S1；
S2, by the workbench (2) for being fixed with prepreg cloth and the pressure module (3) respectively along X to sliding equipment (41) and Z
Test site is moved into sliding equipment (42), the test site is located at the Z-direction sliding equipment (42) and the X to skate machine
The crossover position of structure (41)；
S3 adjusts the pressure module (3) and applies preset positive pressure value N, the fixed workbench (2) to prepreg cloth；
S4, the traction module (5) draw the pressure module (3) along Z-direction vertical motion, drive the friction secondary (32) and institute
It states the prepreg cloth on workbench (2) and generates relative motion, keep the area of friction surface constant in motion process；
S5 measures the tractive force size F during described pressure module (3) uniform motion, and then the dynamic of prepreg cloth is calculated
Coefficient of friction is shown below:
μ k=(F-mg)/N
Wherein, μ k is dynamic friction coefficient；M is the quality of pressure module, kg；G is acceleration of gravity, m/s2；F is tractive force, N；N
For normal pressure, N.
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| CN114459990A (en) * | 2022-01-21 | 2022-05-10 | 国高材高分子材料产业创新中心有限公司 | Friction coefficient testing device |
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