CN204461917U - Film fatigue strength test instrument - Google Patents
Film fatigue strength test instrument Download PDFInfo
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- CN204461917U CN204461917U CN201520195110.8U CN201520195110U CN204461917U CN 204461917 U CN204461917 U CN 204461917U CN 201520195110 U CN201520195110 U CN 201520195110U CN 204461917 U CN204461917 U CN 204461917U
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Abstract
The utility model discloses film fatigue strength test instrument, comprise machinery and the large module of detection control two; Endplay device and the hinged worktable that makes of worktable is adopted to swing back and forth transmission power in mechanical aspects, in order to ensure the elongation of the measured material in loading process with material and the synchronous of microdisplacement that exert a force, adopt differential screw rod transmission, form stable secondary speed-reducing, thus guarantee microdisplacement; In addition in order to reduce the friction in Movement transmit process, increase work efficiency, employing ball slideway, rolling bearing achieve the goal; Form the highly sensitive pull pressure sensor of employing carry out Real-time Collection load data primarily of detection module, power module, control module, human-computer interaction module four major part in automatically controlled, adopt photoelectric encoder Real-time Collection displacement data, the data collected are transferred to single-chip microcomputer display and form feedback over the display, last formation characteristic curve, intuitively display material family curve automatically.
Description
Technical field
The utility model belongs to material properties test Instrument technology field, relates in particular to a kind of film fatigue strength test instrument.
Background technology
In 2l century, due to the fast development of infotech, biotechnology, the energy, environment, national defense industry etc., propose to upgrade higher requirement to material property.The miniaturization of components and parts, intellectuality, high integration, high-density city and ultrafast transmission technology require that the size of material is more and more less.Aero-Space, novel military equipment and advanced manufacturing technology are to the rushing into extremes of requirement of material property.Therefore, the important topic of the research of new material and the necessarily following scientific research of innovation and development foundation.Membraneous material is that one has across significance of times material, daily life, industry manufacture production have its one seat, especially the macromolecule membrane such as nanometer is due to its special design feature, makes it all have good development prospect as functional material and structured material.In order to better applied film material, primary is the mechanical property will understanding membraneous material, and the best method of the mechanical property of Study of Thin membrane material is tested exactly.During the nearly last ten years, Nanoindentation development is very fast.Present stage, widely used thin film material mechanics performance measurement method uses its impression of electron microscopic observation after adopting pressure head under a certain pressure membraneous material to be carried out to the pressurization of certain hour, more indirectly calculated the Using Nanoindentation of its fatigue data by formula; But its measuring process is more loaded down with trivial details, result is not directly perceived and instrument involves great expense, so can not get applying widely.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of film fatigue strength test instrument, comprises mechanical transmission mechanism and detection control circuit.
Described mechanical transmission mechanism comprises base, lower static housing, upper dynamic casing, stretching platform, workbench.Lower static housing is fixed on base; Upper dynamic casing can translationally be arranged on the top of lower static housing in left and right by slide rail; Stretching platform can translationally be arranged on the top of upper dynamic casing in left and right by slide rail; Workbench is fixed on base.
Lower static housing is provided with the first motor, engaged wheel, driving wheel, leading screw, bearing, ball-screw nut, the first tooth bar, displacement measuring device, and described first motor is arranged on the inside of lower static housing, and the first motor output shaft is fixed with driving wheel; Leading screw is rotatably horizontally fixed on two sidewalls of lower static housing by bearing; Described engaged wheel and ball-screw nut are coaxially arranged on leading screw; Ball-screw nut lower end is fixedly connected with the first tooth bar, and the first tooth bar is connected with displacement measuring device; Engaged wheel is connected with the driving wheel be fixed on the first motor output shaft by driving-belt.
Upper dynamic casing is connected by bolt with ball-screw nut; Upper dynamic box house is provided with the second motor and endplay device, and the bottom of dynamic casing fixed by described second motor; Bent axle, first connecting rod, second connecting rod, joint pin and sector gear is comprised at described endplay device, wherein bent axle second motor is connected, one end of first connecting rod is rotatably connected with bent axle, the other end is rotatably connected with one end of second connecting rod, the other end of second connecting rod is fixed on one end of joint pin, the other end of joint pin is fixedly connected with sector gear, and the centre position of joint pin is provided with axle, and the two ends of axle are fixed on the sidewall of dynamic casing.
Be fixedly installed pulling force sensor above stretching platform, bottom surface is fixedly installed the second tooth bar, the second tooth bar and sector gear toe joint.
Workbench is provided with films test mechanism, described films test mechanism comprises strap, mobile clamping plate and resilience track-type facilities, and described resilience track-type facilities is made up of guide rail baffle, guide rail and spring, and spring coaxial sleeve is embedded in guide rail; Mobile clamping plate are fixed on the guide rail of resilience track-type facilities movably, and mobile clamping plate are connected with pulling force sensor by wire rope; When testing membraneous material, mobile clamping plate can be realized by the synergy of wire rope and spring and moving left and right in guide rail.
The type of belt drive of mechanical transmission mechanism of the present utility model is as follows: the first motor drives engaged wheel by driving-belt, engaged wheel drives leading screw to rotate, leading screw drives ball-screw nut to move, ball-screw nut synchronously drives coupled upper dynamic casing to move left and right on slideway, thus realizes the control of the first motor to the position of upper dynamic casing and stretching platform; Institute's displacement measurement device inside is provided with photoelectric encoder, and it is by the displacement data of the first tooth bar Real-time Collection ball-screw nut.Second motor drive rocker mechanism kinematic, sector gear is by the second rack drives stretching platform bilateral reciprocation.
Described detection control circuit comprises MCU microcontroller, power module, reset circuit, driving stepper motor module, DC motor Driver module, human-computer interaction module, photoelectric encoder module, pulling force sensor module, described power module, reset circuit, driving stepper motor module, DC motor Driver module, human-computer interaction module, photoelectric encoder module, pulling force sensor module are connected with MCU microcontroller, and described power module is also connected with driving stepper motor module, DC motor Driver module.Described driving stepper motor module and DC motor Driver module are respectively used to control step motor and direct current generator, described pulling force sensor module detect pulling force sensor signal, the displacement data of photoelectric encoder module acquires ball-screw nut, the data collected are transferred to MCU microcontroller, MCU microcontroller is analyzed data and is formed feedback over the display by human-computer interaction module, last formation characteristic curve, intuitively display material family curve automatically.
The utility model global design is divided into machinery and the large module of detection control two with the theory of modular design; Endplay device and the hinged worktable that makes of worktable is adopted to swing back and forth transmission power in mechanical aspects, in order to ensure the elongation of the measured material in loading process with material and the synchronous of microdisplacement that exert a force, adopt differential screw rod transmission, and transmit power with deceleration synchronization band, form stable secondary speed-reducing, thus guarantee microdisplacement; In addition in order to reduce the friction in Movement transmit process, increase work efficiency, employing ball slideway, rolling bearing achieve the goal; Form the highly sensitive pull pressure sensor of employing carry out Real-time Collection load data primarily of detection module, power module, control module, human-computer interaction module four major part in automatically controlled, adopt photoelectric encoder Real-time Collection displacement data, the data collected are transferred to single-chip microcomputer display and form feedback over the display, last formation characteristic curve, intuitively display material family curve automatically.The utility model has abandoned the loaded down with trivial details of current experimentation and for guaranteeing the expensive expense that precision is equipped with, man-machine interaction is strong.Relative to the laboratory facilities with effect same, it is little that this mechanical mechanism has occupation of land space, practical function, simple to operate, with low cost, completely by people autonomous carry out controlled motion, be convenient to promote, be applicable to the fatigue limit of the film testing out different magnitude accurately, and can experiment teaching aid be applied to.
Accompanying drawing explanation
Fig. 1 is the structural representation of the mechanical transmission mechanism in the utility model embodiment one.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the structural representation of the mechanical transmission mechanism in the utility model embodiment two.
Fig. 4 is the annexation schematic diagram of detection control circuit of the present utility model.
Fig. 5 is the graph of a relation of power in embodiment and elongation.
Wherein: 1 is stretching platform, 2 is the second tooth bar, 3 is sector gear, 4 is second connecting rod, 5 is first connecting rod, 6 is the second motor, 7 is slide rail, 8 is leading screw, 9 is bearing, 10 is engaged wheel, 11 is driving wheel, 12 is the first motor, 13 is base, 14 is ball-screw nut, 15 is the first tooth bar, 16 is displacement measuring device, 17 is control box, 18 is lower static housing, 19 is workbench, 20 is upper dynamic casing, 21 is strap, 22 is membraneous material, 23 is mobile clamping plate, 24 is guide rail baffle, 25 is wire rope, 26 is pulling force sensor, 27 is bent axle, 28 is bolt, 29 is joint pin, 30 is spring, 31 is guide rail, 32 is the first clamping plate, 32-1 is that the first clamping plate tight a bolt, 33 is the second clamping plate, 33-1 is that the second clamping plate tight a bolt.
Embodiment
The technical solution of the utility model is further illustrated below in conjunction with specific embodiment.
Embodiment one:
See accompanying drawing 1, the film fatigue strength test instrument involved by the utility model comprises mechanical transmission mechanism and detection control circuit.Described mechanical transmission mechanism comprises base 13, lower static housing 18, upper dynamic casing 20, stretching platform 1, workbench 19.Lower static housing 18 is fixed on base 13; Upper dynamic casing 20 can translationally be arranged on the top of lower static housing 18 in left and right by slide rail 7; Stretching platform 1 can translationally be arranged on the top of upper dynamic casing 20 in left and right by slide rail; Workbench 19 is fixed on base 13.
Lower static housing 18 is provided with the first motor 12, engaged wheel 10, driving wheel 11, leading screw 8, bearing 9, ball-screw nut 14, first tooth bar 15, displacement measuring device 16, described first motor 12 is arranged on the inside of lower static housing 18, and the first motor 12 output shaft is fixed with driving wheel 11; Leading screw 8 is rotatably horizontally fixed on two sidewalls of lower static housing 18 by bearing 9; Described engaged wheel 10 and ball-screw nut 14 are coaxially arranged on leading screw 8; Ball-screw nut 14 lower end is fixedly connected with the first tooth bar 15, first tooth bar 15 and is connected with displacement measuring device 16; Engaged wheel 10 is connected with the driving wheel 11 be fixed on the first motor 12 output shaft by driving-belt.
Upper dynamic casing 20 is connected by bolt 28 with ball-screw nut 14; Upper dynamic casing 20 inside is provided with the second motor 6 and endplay device, the bottom of the fixing dynamic casing 20 of described second motor 6; Bent axle 27, first connecting rod 5, second connecting rod 4, joint pin 29 and sector gear 3 is comprised at described endplay device, wherein bent axle 27 second motor is connected, one end of first connecting rod 5 is rotatably connected with bent axle 27, the other end is rotatably connected with one end of second connecting rod 4, the other end of second connecting rod 4 is fixed on one end of joint pin 29, the other end of joint pin 29 is fixedly connected with sector gear 3, and the centre position of joint pin 29 is provided with axle, and the two ends of axle are fixed on the sidewall of dynamic casing 20.
Be fixedly installed pulling force sensor 26 above stretching platform 1, bottom surface is fixedly installed the second tooth bar 2, second tooth bar 2 and sector gear 3 toe joint.
Workbench 19 is provided with films test mechanism, see accompanying drawing 2, described films test mechanism comprises strap 21, mobile clamping plate 23 and resilience track-type facilities, and described resilience track-type facilities is made up of guide rail baffle 24, guide rail 31 and spring 30, and spring 30 coaxial sleeve is embedded in guide rail 31; Mobile clamping plate 23 are fixed on the guide rail 31 of resilience track-type facilities movably, and mobile clamping plate 23 are connected with pulling force sensor 26 by wire rope 25; When testing membraneous material, being stepped up the two ends of membraneous material by strap 21 and mobile clamping plate 23, mobile clamping plate 23 can be realized by the synergy of wire rope 25 and spring 30 and moving left and right in guide rail 31.
Described first motor is direct current generator, and the second motor is stepper motor.
The utility model is also provided with control box 17, and it is arranged on base 13, and described detection control circuit is arranged on control box inside.
Described engaged wheel can also be connected with the driving wheel be fixed on the first motor output shaft by driving-chain.
Described engaged wheel can also directly with the driving wheel phase toe joint be fixed on the first motor output shaft.
The type of belt drive of mechanical transmission mechanism of the present utility model is as follows: the first motor drives engaged wheel by driving-belt, engaged wheel drives leading screw to rotate, leading screw drives ball-screw nut 14 to move, ball-screw nut 14 synchronously drives coupled upper dynamic casing 20 to move left and right on slideway, thus realizes the control of the first motor to the position of upper dynamic casing 20 and stretching platform 1; Institute's displacement measurement device 16 inside is provided with photoelectric encoder, and it is by the displacement data of the first tooth bar 15 Real-time Collection ball-screw nut 14.Second motor 6 drive rocker mechanism kinematic, sector gear 3 drives stretching platform 1 bilateral reciprocation by the second tooth bar 2.
See accompanying drawing 4, described detection control circuit comprises MCU microcontroller, power module, reset circuit, driving stepper motor module, DC motor Driver module, human-computer interaction module, photoelectric encoder module, pulling force sensor module, described power module, reset circuit, driving stepper motor module, DC motor Driver module, human-computer interaction module, photoelectric encoder module, pulling force sensor module are connected with MCU microcontroller, and described power module is also connected with driving stepper motor module, DC motor Driver module.Described driving stepper motor module and DC motor Driver module are respectively used to control step motor and direct current generator, described pulling force sensor module detect pulling force sensor signal, the displacement data of photoelectric encoder module acquires ball-screw nut, the data collected are transferred to MCU microcontroller, MCU microcontroller is analyzed data and is formed feedback over the display by human-computer interaction module, last formation characteristic curve, intuitively display material family curve automatically.
Embodiment two:
As Fig. 3 depicted, the film fatigue strength test instrument involved by the utility model can also have another kind of embodiment, and except following structure is different, its structure is identical with the structure of embodiment one:
Comparative example one, workbench 19 do not comprise the films test mechanism in embodiment one in embodiment two; In the present embodiment, workbench 19 is provided with the first clamping plate 32, and the pulling force sensor 26 on stretching platform 1 is fixedly connected with the second clamping plate 33 by bolt, membraneous material 22 clamps, to carry out the test of fatigue strength to membraneous material respectively by the first clamping plate 32-1 and the second clamping plate 33-1 that tights a bolt that tights a bolt by the first clamping plate 32 and the second clamping plate 33.
Illustrate using method of the present utility model below:
1, machine reset, makes fork be in least significant;
2, vernier caliper measurement sample dimensions is used;
3, clamping test specimen (membraneous material): by trade union college on fixture;
4, pretension test specimen: give stepper motor continuous impulse, makes working portion move backward, until the measured value of pull pressure sensor is greater than zero slightly;
5, give direct current generator a unit-pulse signal, fork is swung back and forth, if if the F10 measured value of pull pressure sensor equals zero in ten seconds, then give to move until reach initial pretightning force after stepper motor pulse makes working portion, and continuation effect under the effect of a pulse of direct current generator; If if the F10 measured value of pull pressure sensor is greater than zero and increases a unit pulse to direct current generator again in ten seconds, continuation acts on ten seconds, so each other iterative cycles, until test specimen fracture;
6, the graph of a relation (as shown in Figure 5) had about power and elongation that the size of displacement that the size of power that detected in real time by the pull pressure sensor that single-chip microcomputer stores of display and photoelectric encoder are detected in real time is formed automatically.
The elongation can finding out test specimen intuitively according to graph of a relation and the ultimate load that can bear, and line strain value can be calculated, be tried to achieve the size of material stress by the size of maximum bearing load and the ratio of area, the elastic membrane amount etc. of test specimen can be calculated by the ratio of stress and strain by the ratio of elongation and original size.
Above exemplary description is done to the utility model; should be noted that; when not departing from core of the present utility model, any simple distortion, amendment or other those skilled in the art can not spend the equivalent replacement of creative work all to fall into protection domain of the present utility model.
Claims (9)
1. a film fatigue strength test instrument, comprises mechanical transmission mechanism and detection control circuit, it is characterized in that: described mechanical transmission mechanism comprises base, lower static housing, upper dynamic casing, stretching platform, workbench, and lower static housing is fixed on base; Upper dynamic casing can translationally be arranged on the top of lower static housing in left and right by slide rail; Stretching platform can translationally be arranged on the top of upper dynamic casing in left and right by slide rail; Workbench is fixed on base;
Described lower static housing is provided with the first motor, engaged wheel, driving wheel, leading screw, bearing, ball-screw nut, the first tooth bar, displacement measuring device, described first motor is arranged on the inside of lower static housing, and the first motor output shaft is fixed with driving wheel; Leading screw is rotatably horizontally fixed on two sidewalls of lower static housing by bearing; Engaged wheel and ball-screw nut are coaxially arranged on leading screw; Ball-screw nut lower end is fixedly connected with the first tooth bar, and the first tooth bar is connected with displacement measuring device; Engaged wheel is connected with the driving wheel be fixed on the first motor output shaft;
Upper dynamic casing is connected with ball-screw nut; Upper dynamic box house is provided with the second motor and endplay device, and the bottom of dynamic casing fixed by described second motor; Bent axle, first connecting rod, second connecting rod, joint pin and sector gear is comprised at described endplay device, wherein bent axle second motor is connected, one end of first connecting rod is rotatably connected with bent axle, the other end is rotatably connected with one end of second connecting rod, the other end of second connecting rod is fixed on one end of joint pin, the other end of joint pin is fixedly connected with sector gear, and the centre position of joint pin is provided with axle, and the two ends of axle are fixed on the sidewall of dynamic casing;
Be fixedly installed pulling force sensor above stretching platform, bottom surface is fixedly installed the second tooth bar, the second tooth bar and sector gear toe joint;
Described detection control circuit comprises MCU microcontroller, power module, reset circuit, driving stepper motor module, DC motor Driver module, human-computer interaction module, photoelectric encoder module, pulling force sensor module, described power module, reset circuit, driving stepper motor module, DC motor Driver module, human-computer interaction module, photoelectric encoder module, pulling force sensor module are connected with MCU microcontroller respectively, and described power module is also connected with driving stepper motor module, DC motor Driver module.
2. film fatigue strength test instrument according to claim 1, it is characterized in that: workbench is provided with films test mechanism, described films test mechanism comprises strap, mobile clamping plate and resilience track-type facilities, described resilience track-type facilities is made up of guide rail baffle, guide rail and spring, and spring coaxial sleeve is embedded in guide rail; Mobile clamping plate are fixed on the guide rail of resilience track-type facilities movably, and mobile clamping plate are connected with pulling force sensor by wire rope.
3. film fatigue strength test instrument according to claim 1, it is characterized in that: workbench is provided with the first clamping plate, and the pulling force sensor on stretching platform is connected with the second Boards wall by bolt, the first clamping plate and the second clamping plate tight a bolt respectively by the first clamping plate and the second clamping plate tight a bolt clamps membraneous material.
4. film fatigue strength test instrument according to claim 1, is characterized in that: above dynamic casing is connected by bolt with ball-screw nut.
5. film fatigue strength test instrument according to claim 1, is characterized in that: film fatigue strength test instrument is also provided with control box, and it is arranged on base.
6. film fatigue strength test instrument according to claim 5, is characterized in that: described detection control circuit is arranged on control box inside.
7. film fatigue strength test instrument according to claim 1, is characterized in that: engaged wheel is connected with the driving wheel be fixed on the first motor output shaft by driving-belt.
8. film fatigue strength test instrument according to claim 1, is characterized in that: engaged wheel is connected with the driving wheel be fixed on the first motor output shaft by driving-chain.
9. film fatigue strength test instrument according to claim 1, is characterized in that: engaged wheel directly with the driving wheel phase toe joint be fixed on the first motor output shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520195110.8U CN204461917U (en) | 2015-04-02 | 2015-04-02 | Film fatigue strength test instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520195110.8U CN204461917U (en) | 2015-04-02 | 2015-04-02 | Film fatigue strength test instrument |
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| Publication Number | Publication Date |
|---|---|
| CN204461917U true CN204461917U (en) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520195110.8U Expired - Fee Related CN204461917U (en) | 2015-04-02 | 2015-04-02 | Film fatigue strength test instrument |
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| CN (1) | CN204461917U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108931365A (en) * | 2018-07-24 | 2018-12-04 | 江苏科技大学 | A kind of space membrane structural testing setup |
| CN110153886A (en) * | 2019-06-26 | 2019-08-23 | 东莞心中心智能机械有限公司 | A kind of automatic pressure sensing device for polishing |
| CN111044398A (en) * | 2019-11-12 | 2020-04-21 | 浙江耀阳新材料科技有限公司 | Film anti-scraping test equipment |
| CN113138118A (en) * | 2021-05-08 | 2021-07-20 | 江西科技学院 | Mechanical property detection device and detection system |
-
2015
- 2015-04-02 CN CN201520195110.8U patent/CN204461917U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108931365A (en) * | 2018-07-24 | 2018-12-04 | 江苏科技大学 | A kind of space membrane structural testing setup |
| CN108931365B (en) * | 2018-07-24 | 2020-03-31 | 江苏科技大学 | Space membrane structure test device |
| CN110153886A (en) * | 2019-06-26 | 2019-08-23 | 东莞心中心智能机械有限公司 | A kind of automatic pressure sensing device for polishing |
| CN111044398A (en) * | 2019-11-12 | 2020-04-21 | 浙江耀阳新材料科技有限公司 | Film anti-scraping test equipment |
| CN111044398B (en) * | 2019-11-12 | 2022-03-25 | 浙江耀阳新材料科技有限公司 | Film anti-scraping test equipment |
| CN113138118A (en) * | 2021-05-08 | 2021-07-20 | 江西科技学院 | Mechanical property detection device and detection system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20170402 |
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| CF01 | Termination of patent right due to non-payment of annual fee |