CN206470169U - A kind of device for measuring the coefficient of sliding friction - Google Patents
A kind of device for measuring the coefficient of sliding friction Download PDFInfo
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- CN206470169U CN206470169U CN201720124120.1U CN201720124120U CN206470169U CN 206470169 U CN206470169 U CN 206470169U CN 201720124120 U CN201720124120 U CN 201720124120U CN 206470169 U CN206470169 U CN 206470169U
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Abstract
The utility model discloses a kind of device for measuring the coefficient of sliding friction, including appliance stand, described device support is internally provided with device positioning bucket, described device positioning bucket is internally provided with device large chuck, the side of described device large chuck is provided with the small chuck of device, the side of the small chuck of described device is provided with base of the carrier head, and the side of the base of the carrier head is provided with pressure sensor, and the outside of described device positioning bucket is provided with sliding block；The utility model is safe and convenient to use, pressure sensor, base of the carrier head are fixed, this avoid influence of the hydraulic cylinder impulsive force to pressure sensor during each friction test, sliding clamp is slided in positioning bucket, it ensure that the axiality of two rubbing surfaces, pressure sensor and hydraulic cylinder piston rod, it is ensured that the depth of parallelisms of two chuck rubbing surfaces.Base of the carrier head and the small chuck of device have good detachability, are conveniently replaceable the small chuck of different-thickness to measure the galvanized sheet of different-thickness.
Description
Technical field
The utility model belongs to physical and chemical inspection technical field, and in particular to a kind of device of the measurement coefficient of sliding friction.
Background technology
For many years, auto industry is always not only one of pillar industry of industrially developed country's economy, and in some hairs
National auto industry also occupies an important position in exhibition.The auto industry of Chinese fast development needs the cold rolling of a large amount of excellent performances
Serial galvanized sheet.In the cold rolling serial various stamping processes of galvanized sheet, due to bearing normal pressure, frictional force and larger modeling
Property deformation effect, coating would generally ftracture, peel off and efflorescence, scuffing and viscous zinc, and coefficient of friction substantially lead by increase
Shaping problems of crack is caused, and these problems can become with the change of forming temperature, speed, lubricating condition and deformation condition
Change.
Friction behavior is the comprehensive embodiment of the interphase interaction of plate and mould in punching course, directly affects stamping quality
Quality.So far, influence of the friction to sheet metal forming process is known minimum, can only be rubbed with simple Coulumb
Law simplifies the influence of description friction, by constant processing more than coefficient of friction, but coefficient of friction can be with actual punching course
Plate surface pattern, friction condition difference and change.Therefore, the frictional behavior of galvanized sheet has for the punching press of Automobile Plate
There is directive significance.
For deep-draw, the Basic ignition advance angle of ultra-deep punching and high-strength serial cold-rolling galvanization automobile panel products, surface property, plating
Layer characteristic and structure and morphology, coating damage, the coefficient of friction changing rule simulated under stamping different condition, are coated plate
Material amount performance improvement provides reference and foundation, and necessary forming technique related data is provided for sheet material user.
The content of the invention
The purpose of this utility model is to provide a kind of device for measuring the coefficient of sliding friction, to solve above-mentioned background technology
The problem of middle proposition.
To achieve the above object, the utility model provides following technical scheme：A kind of device for measuring the coefficient of sliding friction,
Including appliance stand, described device support is internally provided with device positioning bucket, and described device positioning bucket is internally provided with dress
Large chuck is put, the side of described device large chuck is provided with the small chuck of device, and the side of the small chuck of described device is provided with chuck
Seat, the side of the base of the carrier head is provided with pressure sensor, and the outside of described device positioning bucket is provided with sliding block.
It is preferred that, the junction of the sliding block and device positioning bucket is provided with sliding recess.
It is preferred that, the outside galvanized sheet is fixedly connected by the small chuck of device large chuck and device.
It is preferred that, described device support is hollow trapezoid shape structure.
It is preferred that, it is provided with semi-circular recesses at the position of the both sides corresponding intrument positioning bucket of described device support.
Compared with prior art, the beneficial effects of the utility model are：The utility model is scientific and reasonable for structure, uses safety
Convenient, pressure sensor, base of the carrier head are fixed, this avoid hydraulic cylinder impulsive force during each friction test to pressure sensor
Influence, sliding clamp is slided in positioning bucket, it is ensured that the axiality of two rubbing surfaces, pressure sensor and hydraulic cylinder piston rod,
It also assures that the depth of parallelism of two chuck rubbing surfaces.Base of the carrier head and the small chuck of device have good detachability, are conveniently replaceable not
The small chuck of stack pile is to measure the galvanized sheet of different-thickness.Bottoming hole, the small chuck of device are provided with base of the carrier head and sliding clamp
And have thermometer hole on sliding clamp, be easy to measure different temperatures under galvanized sheet coefficient of friction.There is sample groove in appliance stand center,
Test operation can easily be carried out.Displacement transducer by displacement sensor bracket, L-type frame respectively with appliance stand base and
Cupping machine middle cross beam is connected, and can accurately measure the displacement in friction process.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
In figure：1- devices large chuck, the small chuck of 2- devices, 3- base of the carrier head, 4- appliance stands, 5- pressure sensors, 6- dresses
Put positioning bucket, 7- sliding blocks.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
Referring to Fig. 1, the utility model provides a kind of technical scheme：A kind of device for measuring the coefficient of sliding friction, including
Appliance stand 4, appliance stand 4 is internally provided with device positioning bucket 6, and device positioning bucket 6 is internally provided with device large chuck
1, the side of device large chuck 1 is provided with the small chuck 2 of device, and the side of the small chuck 2 of device is provided with base of the carrier head 3, base of the carrier head 3
Side is provided with pressure sensor 5, and the outside of device positioning bucket 6 is provided with sliding block 7.
The junction of sliding block 7 and device positioning bucket 6 is provided with sliding recess；Outside galvanized sheet passes through the He of device large chuck 1
The small chuck 2 of device is fixedly connected；Appliance stand 4 is hollow trapezoid shape structure；The both sides corresponding intrument positioning bucket 6 of appliance stand 4
Semi-circular recesses are provided with position.
The friction coefficient measuring apparatus of this in the utility model changes on original universal testing machine WDW-100 cupping machines
Make, pulling force, stroke and speed are provided by universal testing machine WDW-100, and pressure is provided by hydraulic system.Galvanized sheet coefficient of friction is real
Test amount unit temp is adjusted by PID expert control systems.
It is that pressure sensor 5, base of the carrier head 3 are fixed in the utility model, this avoid hydraulic cylinder during each friction test
Influence of the impulsive force to pressure sensor, sliding clamp is slided in positioning bucket, it is ensured that two rubbing surfaces, the and of pressure sensor 5
The axiality of hydraulic cylinder piston rod, it is ensured that the depth of parallelisms of two chuck rubbing surfaces.Base of the carrier head 3 and the small chuck 2 of device have good
Good detachability, is conveniently replaceable the small chuck of different-thickness to measure the galvanized sheet of different-thickness.Base of the carrier head 3 and sliding clamp
On be provided with bottoming hole, the small chuck 2 of device and sliding clamp and have thermometer hole, be easy to measure the friction system of galvanized sheet under different temperatures
Number.There is sample groove in the center of appliance stand 4, in that context it may be convenient to carry out test operation.Displacement transducer by displacement sensor bracket,
L-type frame is connected with the base of appliance stand 4 with cupping machine middle cross beam respectively, can accurately measure the position in friction process
Move.
The utility model during friction test, by rubbing device acquisition system gather pressure, pulling force, displacement wink
Duration, and calculate instantaneous coefficient of friction.After friction test terminates, displacement region can will be set by coefficient of friction software
Coefficient of friction average value is obtained.Galvanized sheet coefficient of friction experimental determination device the key technical indexes is as follows：First, pressure regulation model
Enclose：0-4KN；2nd, tension measurement scope：0-10KN；3rd, draw speed adjustable range：0-500mm/min；4th, temperature adjustment model
Enclose：20℃-80℃；（5）Measure galvanized sheet thickness range：0.5-2.1mm.
Appliance stand 4 has been primarily subjected to the pulling force that the pressure and cupping machine of hydraulic cylinder are provided.Open half in support both sides
Circular groove, conveniently can be put into device positioning bucket 6 and be fixed on support.Positioning bucket is the core of friction coefficient measuring apparatus
Point, base of the carrier head 3 is fixed on the right side of positioning bucket, and device large chuck 1 and sliding block 7 can be positioned in the left side of positioning bucket in device
In bucket 6 slidably.Base of the carrier head 3 is mainly the small chuck 2 of fixing device, and sliding block 7 is mainly used to adjust the level of rubbing surface.
Operation principle of the present utility model and use flow：It is real in measuring friction coefficient after the utility model is installed
Test before beginning, first sample is placed in the groove of device positioning bucket 6, then clamp sample with cupping machine lower clamp, open
Hydraulic pump, hydraulic cylinder promotes to the right sliding block 7, applies given pressure to device large chuck 1, make sample specified area by
Given pressure.Pressure by pressure seat can pressure transmission to pressure sensor 5, then from certain speed tensile sample,
Sample is released from chuck.Measuring friction coefficient device data collection system synchronizing gathers pressure tensile displacement, and calculates
Go out the coefficient of friction of given area.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out in the case where not departing from principle of the present utility model and spirit a variety of changes, repaiies
Change, replace and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof.
Claims (5)
1. a kind of device for measuring the coefficient of sliding friction, including appliance stand（4）, it is characterised in that：Described device support（4）'s
It is internally provided with device positioning bucket（6）, described device positioning bucket（6）Be internally provided with device large chuck（1）, described device is big
Chuck（1）Side be provided with the small chuck of device（2）, the small chuck of described device（2）Side be provided with base of the carrier head（3）, it is described
Base of the carrier head（3）Side be provided with pressure sensor（5）, described device positioning bucket（6）Outside be provided with sliding block（7）.
2. a kind of device for measuring the coefficient of sliding friction according to claim 1, it is characterised in that：The sliding block（7）With
Device positioning bucket（6）Junction be provided with sliding recess.
3. a kind of device for measuring the coefficient of sliding friction according to claim 1, it is characterised in that：The outside galvanized sheet
Pass through device large chuck（1）With the small chuck of device（2）It is fixedly connected.
4. a kind of device for measuring the coefficient of sliding friction according to claim 1, it is characterised in that：Described device support
（4）For hollow trapezoid shape structure.
5. a kind of device for measuring the coefficient of sliding friction according to claim 1, it is characterised in that：Described device support
（4）Both sides corresponding intrument positioning bucket（6）Position at be provided with semi-circular recesses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720124120.1U CN206470169U (en) | 2017-02-10 | 2017-02-10 | A kind of device for measuring the coefficient of sliding friction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720124120.1U CN206470169U (en) | 2017-02-10 | 2017-02-10 | A kind of device for measuring the coefficient of sliding friction |
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| CN206470169U true CN206470169U (en) | 2017-09-05 |
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| CN201720124120.1U Active CN206470169U (en) | 2017-02-10 | 2017-02-10 | A kind of device for measuring the coefficient of sliding friction |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677594A (en) * | 2017-09-06 | 2018-02-09 | 武汉钢铁有限公司 | A kind of metal sheet strip coefficient of sliding friction testing machine and method |
| CN110879143A (en) * | 2019-11-29 | 2020-03-13 | 安徽江淮汽车集团股份有限公司 | Gearbox testing device |
| CN113030428A (en) * | 2021-03-11 | 2021-06-25 | 中国人民解放军63921部队 | Device and system for measuring energy release capacity of energetic material |
-
2017
- 2017-02-10 CN CN201720124120.1U patent/CN206470169U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677594A (en) * | 2017-09-06 | 2018-02-09 | 武汉钢铁有限公司 | A kind of metal sheet strip coefficient of sliding friction testing machine and method |
| CN110879143A (en) * | 2019-11-29 | 2020-03-13 | 安徽江淮汽车集团股份有限公司 | Gearbox testing device |
| CN113030428A (en) * | 2021-03-11 | 2021-06-25 | 中国人民解放军63921部队 | Device and system for measuring energy release capacity of energetic material |
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