CN103245568A - Macromolecular material tensile testing device - Google Patents
Macromolecular material tensile testing device Download PDFInfo
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- CN103245568A CN103245568A CN2013101766901A CN201310176690A CN103245568A CN 103245568 A CN103245568 A CN 103245568A CN 2013101766901 A CN2013101766901 A CN 2013101766901A CN 201310176690 A CN201310176690 A CN 201310176690A CN 103245568 A CN103245568 A CN 103245568A
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Abstract
The invention relates to a macromolecular material tensile testing device. The macromolecular material tensile testing device comprises a bottom plate, a base, a driver, an upright post, a cross beam, a bearing seat, a ball screw, a force transmission fixed part, a pressure sensor, a clamping apparatus, a testing piece, a clamp sleeve and a patch board, and is characterized by further comprising an optical axis rod, a smooth flange plate, an optical axis bracket, a screw flange plate, a tension groove boss, a coupler, a voltage stabilizer and a stepper motor with an encoder, wherein the upright post is of a one-piece box type and is vertically arranged on the base; the driver is a subdividing driver; the stepper motor with the encoder is connected with the bottom end of the ball screw through the coupler; the tail end of the cross beam is connected with the optical axis rod through the mode that the smooth flange plate is sleeved in a hole, the optical axis rod is connected with the optical axis bracket in a sleeve manner, and the optical axis bracket is fixed on the side surface of the upright post. The macromolecular material tensile testing device has obvious advantages of high precision and high reliability, and great reduction of the volume and manufacturing cost of the equipment.
Description
Technical field
The invention belongs to the Material Testing Machine technical field, particularly relate to a kind of macromolecular material tensile test apparatus.
Background technology
In the modern material field, based on the macromolecular material of macromolecular compound, be widely used in fields such as medical research, material selection, capital construction, Aero-Space.Macromolecular material mainly is made of the higher compound of relative molecular mass, comprise rubber, plastics, fiber, coating, adhesive and polymer-based composite etc., it has distinctive molecular structure and performance, easily modification, easily processing, have the unrivaled excellent function of other material, become clothing, food, lodging and transportion--basic necessities of life various aspects indispensable material in modern industry and the social life.Under the more and more popular situation of current material industry, research has great importance at the Material Testing Machine of macromolecular material performance test.
The Sweden SP Research on measuring technique J.P. Hessling researcher of institute is at " mechanical system and signal are handled (Mechanical Systems and Signal Processing) " magazine 2008(22): the testing machine that has proposed to adopt two column design structures in " dynamic calibration of uniaxial material testing machine (Dynamic calibration of uni-axial material testing machines) " literary composition that 451-466 delivers, namely simultaneously provide driving force to testing machine by two columns, to guarantee to have enough driving kinetic energy, but it exists following main not enough: the one, adopted complicated two column design structures, its complex process, the processing charges height; Two is that two columns need provide driving force simultaneously, is difficult to the synchronism of warranty test process, causes the measuring accuracy of test specimen lower; The 3rd, floor area is big, needs bigger installation space; The 4th, two column design structures cause the clamping test specimen only can enter pilot region from two sides, have increased the difficulty of clamping test specimen.
Chinese patent application 97100487.0 discloses a kind of " Material Testing Machine ", this Material Testing Machine mainly is made up of a pair of box-shaped column of vertically setting up, wherein: a pair of screw rod that is arranged in column, another between column and the crossbearer that cooperates with screw rod and two chucks form, when screw rod rotates, the crossbearer motion, can impose tensile load etc. to the test block that is held by chuck, though it has enough driving forces, but also have the following disadvantages: the one, two pillar construction precision are not high, directly have influence on the measuring accuracy of test specimen; The 2nd, two pillar construction floor areas are big, complex structure, device fabrication cost height; The 3rd, but the operating space of two pillar constructions is little, has increased the difficulty of clamping test specimen.
How to overcome the deficiencies in the prior art and become one of emphasis difficult problem that needs to be resolved hurrily in the current Material Testing Machine technical field.
Summary of the invention
The objective of the invention is provides a kind of macromolecular material tensile test apparatus for overcoming the deficiencies in the prior art, and the present invention has the remarkable advantage of high precision and high reliability, and has dwindled the volume of present device widely and reduced manufacturing cost.
A kind of macromolecular material tensile test apparatus that proposes according to the present invention, it comprises that base plate, base, driver, column, crossbeam, bearing seat, ball-screw, power pass fixture, pressure transducer, anchor clamps, test specimen, anchor clamps cover and power board, the top of described ball-screw is fixed on the top cover of column by bearing seat, pressure transducer one end firmly passes fixture and is fixed on the crossbeam, and the other end is threaded with anchor clamps; It is characterized in that also comprising the stepper motor of optical axis bar, smooth ring flange, optical axis support, threaded flange dish, tensioning geosynclinal convex platform, shaft coupling, voltage stabilizer and band scrambler, described column is single box column, is vertically set on the base; Driver is subdivision driver; Optical axis bar, rotatable ball-screw and can rotate the crossbeam that moves up and down with ball-screw and be arranged in the column, crossbeam is provided with two circular holes that run through upper and lower surface, this circular screw that evenly distributes, crossbeam can apply Tensile or Compressive Loading by the clamping test specimen that moves up and down anchor clamps, and optical axis bar ring flange and threaded flange dish are inserted in the circular hole of crossbeam and are fastening with screw; The threaded flange dish is threaded with ball-screw, and is fixed on the crossbeam with screw; The voltage stabilizer power lead is connected with the stepper motor of band scrambler, and the step motor shaft of band scrambler is connected with the ball-screw bottom by shaft coupling; The crossbeam tail end is connected with the optical axis bar by being inserted in smooth ring flange in the hole, optical axis bar and the socket of optical axis support, and the optical axis support is fixed on the column side; Tensioning geosynclinal convex platform is vertically fixed on the base, and be inserted in the smooth circular hole of tensioning geosynclinal convex platform the lower end of ball-screw.The further preferred version of the present invention is: crossbeam and pressure transducer canned paragraph be perpendicular to column, and stretch out outside the column; Subdivision driver encapsulates and is fixed on the inside of base.
Principle of work of the present invention is: the present invention is mainly by the component movement modules such as stepper motor, shaft coupling, feed screw nut and beam clamp of being with scrambler, when driving ball-screw by shaft coupling, the stepper motor of being with scrambler rotates, drive the crossbeam moving linearly by the feed screw nut transmission, and utilize the anchor clamps realization to stretching or the compression of clamping test specimen, wherein adopt the mode of direct connection with the stepper motor of scrambler, omitted the reducer casing part, under the prerequisite that guarantees output torque and stepping accuracy, reduced the influence that backlash, backlash bring like this.Ball guide screw nat is selected in the feed screw nut transmission for use, can improve transmission efficiency like this, reduces the error of the positional precision that causes because of friction.
The present invention compared with prior art its remarkable advantage is: the one, and the scrambler that the present invention adopts stepper motor detects the shift value of crossbeam, convert the corner of the ball-screw that measures to pulse signal simultaneously and send host computer to, obtain the shift value of crossbeam by the relation of conversion ball-screw helical pitch and crosshead displacement, thereby improve test accuracy of the present invention; The 2nd, adopted outside servo-control system and pressure transducer of the present invention to constitute closed-loop control system, realize stable loading speed by degenerative automatic control; The 3rd, adopts pressure sensor of the present invention is measured the dependent variable of clamping test specimen, realizes that by the step motor control system of band scrambler the constant strain rate loads, and it is stable and reliable for performance; The 4th, of the present invention simple and reliable for structure, both dwindled widely present device volume, reduced floor area, reduced the manufacturing cost of present device again.
Description of drawings
Fig. 1 is that the master of a kind of macromolecular material tensile test apparatus of proposing of the present invention looks partial sectional view.
Fig. 2 is that full sectional view is looked on the c-c left side of Fig. 1 of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
In conjunction with Fig. 1 and Fig. 2, a kind of macromolecular material tensile test apparatus that the present invention proposes, it is mainly by base plate (1), base (2), driver (3), column (4), optical axis bar (5), crossbeam (6), smooth ring flange (7), optical axis support (8), bearing seat (9), ball-screw (10), power passes fixture (11), threaded flange dish (12), pressure transducer (13), anchor clamps (14), clamping test specimen (15), boss (16), shaft coupling (17), anchor clamps cover (18), voltage stabilizer (19), stepper motor (20) and the power board (21) of band scrambler are formed.Wherein: described base plate (1) is fixed on the bottom of base (2) with four identical screws, and base (2) is encapsulated; Column (4) is monomer box column, is vertically set on the base (2); Driver (3) is subdivision driver, and subdivision driver is the highest to segment for 30000 steps, and subdivision driver, voltage stabilizer (19) and power board (21) are with the screw encapsulation and be fixed on the inside of base (2); Optical axis bar (5), rotatable ball-screw (10) and can rotate the crossbeam (6) that moves up and down with ball-screw (10) and be arranged in the column (4), crossbeam (6) is provided with two circular holes that run through upper and lower surface, this circular screw that evenly distributes, crossbeam (6) can apply Tensile or Compressive Loading by the clamping test specimen (15) that moves up and down anchor clamps (14), optical axis bar ring flange (7) and threaded flange dish (12) are inserted in the circular hole of crossbeam (6) and are fastening with screw, and crossbeam (6) stretches out outside the column (4) with pressure transducer (13) canned paragraph; The top of ball-screw (10) is fixed on the top cover of column (4) by bearing seat (9), and pressure transducer (13) one ends firmly pass fixture (11) and are fixed on the crossbeam (6), and the other end is threaded with anchor clamps (14), with pressure in the direct acquisition test; Threaded flange dish (12) is threaded with ball-screw (10), and is fixed on the crossbeam (6) with screw; Anchor clamps cover (18) is fixed on the base (2) by screw; Voltage stabilizer (19) power lead is connected with the stepper motor (20) of band scrambler, stepper motor (20) axle of band scrambler is connected with ball-screw (10) bottom by shaft coupling (17), when stepper motor (20) motor message of the given band scrambler in outside, stepper motor (20) rotation of band scrambler also rotates by shaft coupling (17) drive ball-screw (10); Crossbeam (6) tail end is connected with optical axis bar (5) by being inserted in smooth ring flange (7) in the hole, optical axis bar (5) and optical axis support (8) socket, and optical axis support (8) is fixed on column (4) side; Tensioning geosynclinal convex platform (16) is vertically fixed on the base (2), and be inserted in the smooth circular hole of tensioning geosynclinal convex platform (16) lower end of ball-screw (10).
The macromolecular material tensile test apparatus that now with the manufacturability design rules is the 850mm/min loading velocity is example, further specifies the specific embodiment of the present invention:
Design standards of the present invention is the 850mm/min loading velocity, and this loading velocity can be selected in 400 to 850mm/min scopes according to the actual requirements.Because macromolecular material stretcher strain stress is less, system's rate of extension is also slower, under the prerequisite that guarantees output torque, can omit reducer casing like this, reduces physical dimension and saves cost.Simultaneously, do not have auto-lock function because ball-screw rotates, and the auto-lock function of the stepper motor (20) self of band scrambler can remedy this deficiency on the one hand, avoids causing rotating appearance because motor shuts down, and has guaranteed positional precision of the present invention.
The pressure transducer (13) that the present invention adopts is S type LOAD CELLS, and this pressure transducer of weighing is selected the SM6 type for use, and its range is 50kg, the output maximum voltage value is 21mV, after utilizing amplifier to carry out the signal transmitting amplification, output voltage is 5V to the maximum, can be obtained by data collecting card.
The nominal diameter of the ball-screw (10) that the present invention adopts is 17mm, the axle head diameter is 13mm, and the supporting way of determining to be an end fix an end moves about, stiff end is selected the angular contact ball bearing of a pair of anti-dress for use, the end that moves about is selected deep groove ball bearing for use, wherein the angular contact ball bearing model can be selected 7001C/DB for use, and the deep groove ball bearing model can be selected 6211 types for use.
The helical pitch of the ball-screw (10) that the present invention adopts
PhBe 5mm, testing machine maximum load speed is no more than 850mm/min, then the rotating speed with the stepper motor (20) of scrambler is up to 170r/min, and it is the stepper motor of the three-phase hybrid band scrambler of 60BYG350 that the stepper motor (20) of band scrambler can be selected model for use.
The driver (3) of the stepper motor of band scrambler of the present invention (20) can be selected SH-30806N three-phase subdivision driver for use, driver (3) is by DC power supply, 16 kinds of segmentation patterns with maximum 30000 steps/commentaries on classics are optional, and this driver has the function of outage memory.Subdivision driver (3) major function is to receive the pulse signal that motor control card sends, convert thereof into corresponding steering order and come the stepper motor of rotating band scrambler (20) just to change, reverse and stop with the speed of setting, thereby control crossbeam (6) rises, descends and stops.The stepper motor (20) of band scrambler is when rotating, the photoelectric encoder that inside carries catches the anglec of rotation of motor, and send to upper computer outside with the form of pulse, upper computer outside obtains the motor rotational angle indirectly by calculating umber of pulse, also be ball-screw (10) rotational angle, according to rolling accurate leading screw (10) thus helical pitch and the relevant computing formula of displacement calculate the mobile displacement of crossbeam (6).
The present invention has obtained satisfied effect through validation trial.
Claims (3)
1. macromolecular material tensile test apparatus, it comprises that base plate (1), base (2), driver (3), column (4), crossbeam (6), bearing seat (9), ball-screw (10), power pass fixture (11), pressure transducer (13), anchor clamps (14), test specimen (15), anchor clamps cover (18) and power board (21), the top of described ball-screw (10) is fixed on the top cover of column (4) by bearing seat (9), pressure transducer (13) one ends firmly pass fixture (11) and are fixed on the crossbeam (6), and the other end is threaded with anchor clamps (14); It is characterized in that also comprising the stepper motor (20) of optical axis bar (5), smooth ring flange (7), optical axis support (8), threaded flange dish (12), tensioning geosynclinal convex platform (16), shaft coupling (17), voltage stabilizer (19) and band scrambler, described column (4) is single box column, is vertically set on the base (2); Driver (3) is subdivision driver; Optical axis bar (5), rotatable ball-screw (10) and can rotate the crossbeam (6) that moves up and down with ball-screw (10) and be arranged in the column (4), crossbeam (6) is provided with two circular holes that run through upper and lower surface, this circular screw that evenly distributes, crossbeam (6) can apply Tensile or Compressive Loading by the clamping test specimen (15) that moves up and down anchor clamps (14), and optical axis bar ring flange (7) and threaded flange dish (12) are inserted in the circular hole of crossbeam (6) and are fastening with screw; Threaded flange dish (12) is threaded with ball-screw (10), and is fixed on the crossbeam (6) with screw; Voltage stabilizer (19) power lead is connected with the stepper motor (20) of band scrambler, and stepper motor (20) axle of band scrambler is connected with ball-screw (10) bottom by shaft coupling (17); Crossbeam (6) tail end is connected with optical axis bar (5) by being inserted in smooth ring flange (7) in the hole, optical axis bar (5) and optical axis support (8) socket, and optical axis support (8) is fixed on column (4) side; Tensioning geosynclinal convex platform (16) is vertically fixed on the base (2), and be inserted in the smooth circular hole of tensioning geosynclinal convex platform (16) lower end of ball-screw (10).
2. a kind of macromolecular material tensile test apparatus according to claim 1 is characterized in that crossbeam (6) and pressure transducer (13) canned paragraph perpendicular to column (4), and stretches out outside the column (4).
3. a kind of macromolecular material tensile test apparatus according to claim 1 and 2 is characterized in that subdivision driver encapsulates and be fixed on the inside of base (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101766901A CN103245568A (en) | 2013-05-14 | 2013-05-14 | Macromolecular material tensile testing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013101766901A CN103245568A (en) | 2013-05-14 | 2013-05-14 | Macromolecular material tensile testing device |
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| CN103245568A true CN103245568A (en) | 2013-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013101766901A Withdrawn CN103245568A (en) | 2013-05-14 | 2013-05-14 | Macromolecular material tensile testing device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512804A (en) * | 2013-10-18 | 2014-01-15 | 徐州工程学院 | Automatic control method for small-scale tensile testing machine |
| CN104406853A (en) * | 2014-12-02 | 2015-03-11 | 南京理工大学 | Test device suitable for uniaxial tensile test on viscous-elastic material |
| CN106769431A (en) * | 2017-03-06 | 2017-05-31 | 南通市建设工程质量检测站有限公司 | A kind of heat insulated shape bar of aluminum alloy longitudinal shear resistance detection test fixture for building |
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| CN1164025A (en) * | 1996-02-28 | 1997-11-05 | 株式会社岛津制作所 | Material testing machine |
| JPH11108816A (en) * | 1997-09-30 | 1999-04-23 | Ube Ind Ltd | Tension testing device for resin |
| CN101788429A (en) * | 2010-03-11 | 2010-07-28 | 山东中元自动化设备有限公司 | Equipment for testing bending and torsion resisting performances of electrical insulator |
| CN203216806U (en) * | 2013-05-14 | 2013-09-25 | 南京理工大学 | High polymer material tensile testing machine |
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2013
- 2013-05-14 CN CN2013101766901A patent/CN103245568A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1164025A (en) * | 1996-02-28 | 1997-11-05 | 株式会社岛津制作所 | Material testing machine |
| JPH11108816A (en) * | 1997-09-30 | 1999-04-23 | Ube Ind Ltd | Tension testing device for resin |
| CN101788429A (en) * | 2010-03-11 | 2010-07-28 | 山东中元自动化设备有限公司 | Equipment for testing bending and torsion resisting performances of electrical insulator |
| CN203216806U (en) * | 2013-05-14 | 2013-09-25 | 南京理工大学 | High polymer material tensile testing machine |
Non-Patent Citations (1)
| Title |
|---|
| 潘强 等: "步进电机直线定位系统设计及仿真研究", 《计算机仿真》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512804A (en) * | 2013-10-18 | 2014-01-15 | 徐州工程学院 | Automatic control method for small-scale tensile testing machine |
| CN104406853A (en) * | 2014-12-02 | 2015-03-11 | 南京理工大学 | Test device suitable for uniaxial tensile test on viscous-elastic material |
| CN104406853B (en) * | 2014-12-02 | 2017-03-15 | 南京理工大学 | It is applied to the assay device of the uniaxial tensile test of viscoelastic material |
| CN106769431A (en) * | 2017-03-06 | 2017-05-31 | 南通市建设工程质量检测站有限公司 | A kind of heat insulated shape bar of aluminum alloy longitudinal shear resistance detection test fixture for building |
| CN106769431B (en) * | 2017-03-06 | 2023-12-15 | 南通市建设工程质量检测站有限公司 | Longitudinal shearing detection test fixture for heat-insulating aluminum alloy section bar for building |
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Application publication date: 20130814 |