CN101881710A - Location loading material testing machine - Google Patents

Location loading material testing machine Download PDF

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Publication number
CN101881710A
CN101881710A CN 201010190314 CN201010190314A CN101881710A CN 101881710 A CN101881710 A CN 101881710A CN 201010190314 CN201010190314 CN 201010190314 CN 201010190314 A CN201010190314 A CN 201010190314A CN 101881710 A CN101881710 A CN 101881710A
Authority
CN
China
Prior art keywords
location
loading
flange shaft
support
nut
Prior art date
Application number
CN 201010190314
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Chinese (zh)
Other versions
CN101881710B (en
Inventor
冯爱新
聂贵锋
徐传超
卞兆生
孙淮阳
曹宇鹏
王俊伟
周鹏程
Original Assignee
江苏大学
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Publication date
Application filed by 江苏大学 filed Critical 江苏大学
Priority to CN2010101903144A priority Critical patent/CN101881710B/en
Publication of CN101881710A publication Critical patent/CN101881710A/en
Application granted granted Critical
Publication of CN101881710B publication Critical patent/CN101881710B/en

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Abstract

The invention relates to a location loading material testing machine which belongs to the technical field of material test. The location loading material testing machine is characterized in a location loading system; a support stand and a loading support part of the location loading system are respectively positioned at both ends of a fixing base; the loading support part comprises a location loading stand, a flange shaft, an overrunning clutch, a rolling bearing, a groove-shaped nut and two sliding blocks; three guide grooves are arranged on the location loading stand; the sliding blocks are respectively positioned in two keyways of the right external diameter of the groove-shaped nut; the overrunning clutch and the rolling bearing are fixed in the location loading stand in parallel; one end of the flange shaft is fixed by a hexagon nut through threads, and the other end is connected with the groove-shaped nut by threads; the left side of the groove-shaped nut is provided with a groove-shaped cavity; two through holes which are distributed left and right are radially arranged in the groove-shaped cavity; and the positions of the two through holes correspond to the first guide groove and the second guide groove on a loading support stand. The invention can realize a series of tension and compression tests and torsion tests by applying the guide grooves in the horizontal direction and the vertical direction of a location tension-compression-torsion loading stand.

Description

Location loading material testing machine
Technical field
The invention belongs to metal material experimental technique field, the Material Testing Machine that particularly provides a kind of simple in structure, multiple functional location to load.
Background technology
Along with the development of industrial technology, more and more higher to the various mechanical property requirements of material, when this just requires material accurately tested.Also improved application performance to Material Testing Machine.Strong and the detection property reliability height of simple in structure, multiple functional, rig-site utilization becomes people Material Testing Machine is proposed new requirement.
Present existing technology has State Intellectual Property Office's Granted publication number: CN200982938Y, patent name: a kind of spring tension and compression testing machine; Granted publication number: CN200986512Y, patent name: spring tension and compression testing machine; With State Intellectual Property Office's publication number: CN101042322A, patent name: a kind of constant Loading tension-compression test machine.These technology can only be carried out independent tension and compression test all at some specific areas and particular aspects design, and therefore using also has certain limitation.
And the equipment that comes into operation at present mainly contains counterweight formula constant load cupping machine (or system controlled by computer material stretch test machine or universal testing machine) and proving ring (or spring assembly).The former tests accurately, but equipment is relatively more expensive and occupation of land is big, carries and lay not to be very convenient; The latter is simple in structure, price is low, be fit to bulge test, but the precision of device is low, and needs large-scale record equipment secondary load, record data, inconvenient operation automatically.
The locator material testing machine of this patent design can overcome these shortcomings, not only can carry out independent tension and compression test and twisting test, also can draw simultaneously to turn round or press and turn round composite test.Load mode is more flexible, but can load also manual loading automatically, and record data bring great convenience to data processing automatically.
Summary of the invention
The object of the present invention is to provide a kind of multifunctional material testing machine that loads by the location, solved shortcomings such as the expense of equipment operation and maintenance in the past costliness, floor area are big, the present invention realizes a kind ofly manually loading also can load automatically simple in structure, floor area is little (about 60 * 30 * 25), gather automatically and the multi-functional locator material testing machine of record data.
This device is made up of control system, detection system, location loading system (twisting tension and compression) three parts.
Control system is to pass through software systems controlled motion control card by industrial computer, makes fortune power control fabrication drive stepping motor and rotates drive flange shaft realization motion control behind shaft coupling.
Detection system is made up of STSS-1 ess-strain module, load sensor, GGD19-LVDT displacement transducer, obtain the ess-strain signal by the sensor that loads the position during location test, load sensor sends the ess-strain signal to STSS-1 ess-strain module then; Obtain displacement signal by the GGD19-LVDT displacement transducer, realize that the location detects the variation of ess-strain in real time.
The location loading system is made up of firm banking, support pedestal and loading support section, and support pedestal and loading support section lay respectively at the two ends of firm banking.The support pedestal top is provided with trip bolt, and effect is that test specimen is applied fixing hinged location, and the support pedestal top is provided with pin-and-hole, is used for fixing test specimen; Loading support section is made up of location loading support, flange shaft, overrunning clutch, rolling bearing, grooved nut and two slide blocks.The location loads support and is fixed on the firm banking, the location loads on the support three gathering sills, first gathering sill is that the vertical degree of freedom of restriction realizes the tension and compression effect, second gathering sill is that the limit levels degree of freedom realizes twisting action, and the effect of the 3rd gathering sill is the move left and right of regulating the slide block in the channel nut keyway by the 3rd gathering sill.Two slide blocks lay respectively in two keyways of channel nut right part external diameter, and overrunning clutch and rolling bearing are fixed on the location side by side and load the support the inside, and wherein overrunning clutch is positioned at the outside of rolling bearing.The flange shaft two ends are threaded, left end shaft shoulder place has two and the corresponding keyway of channel nut keyway, after in slide block moves to the flange shaft keyway, channel nut is rotated with flange shaft, flange shaft one end is fixed with hexagonal nut by screw thread, the other end is connected with channel nut by screw thread, and flange shaft is fixed in location loading support circular cavity centerline by the hexagonal nut of overrunning clutch, rolling bearing and end.Grooved nut right side becomes thread connection with flange shaft, and the left side is the flute profile cavity, radially is distributed with two through holes on the flute profile cavity, and the position of through hole is corresponding with first and second gathering sills on loading support pedestal on two.In tension and compression when test, put into grooved nut cavity with test specimen, passes on first gathering sill on the location loading support, the grooved nut and corresponding through hole of first gathering sill and test specimen with second straight pin.Control system drives the stepping motor rotation and drive the flange shaft rotation behind shaft coupling, and flange shaft and grooved nut form the screw thread motion, promptly converts the location tension and compression load test of the rectilinear motion realization of grooved nut to test specimen to by rotatablely moving of flange shaft.Pass the location with the three cylindrical pin and load through hole and the test specimen corresponding on second gathering sill on the support, the grooved nut with second gathering sill.After two slide blocks move in the flange shaft keyway, circumferentially fixing flange shaft and grooved nut, make flange shaft and channel nut not have relative motion, one common peripheral loads the rotation of support circular cavity center line around the location, realize the location twisting test to test specimen.
The present invention has compared following advantage with existing Material Testing Machine:
1, testing machine simple in structure, take up room little, equipment principle is simply clear, compact equipment, cost performance height.
2, creationaryly realized the location test of Material Testing Machine, both can manual loading also can load automatically, taked and record data the accuracy of the data of mentioning greatly automatically test specimen.Solved the irrealizable problem of existing testing machine.
3, the level on the utilization of the invention location twisting tension and compression loading support and the gathering sill of vertical both direction can be realized a series of tension and compression test and twisting test.
Description of drawings
The structured flowchart and the description of drawings of specific embodiments of the invention are as follows:
Fig. 1 Material Testing Machine one-piece construction figure
Fig. 2 locatees loading system (cross sectional plan view)
Fig. 3 locatees and loads support (outward appearance front view)
Fig. 4 flange shaft front view
Fig. 5 flange shaft side view
1, industrial computer; 2, motion control card; 3, stepping motor; 4, STSS-1 ess-strain module; 5, shaft coupling; 6, overrunning clutch; 7, rolling bearing; 8, grooved nut; 9, the location loads support; 10, GGD19-LVDT stretching displacement sensor; 11, GGD19-LVDT torsional displacement sensor; 12, first load sensor; 13, second load sensor; 14, trip bolt; 15, parallels; 16, support pedestal; 17, firm banking; 18, first straight pin; 19, test specimen; 20, second straight pin; 21, three cylindrical pin; 22, screw; 23, slide block (2); 24, hexagonal nut; 25, flange shaft; 26, manual loading rod.27, first gathering sill; 28, second gathering sill; 29, the 3rd gathering sill.
Specific embodiments
Described the present invention locatees loading system (cross sectional plan view), Fig. 3 by Fig. 1 Material Testing Machine one-piece construction figure, Fig. 2 and locatees and load support (outward appearance front view), Fig. 4 flange shaft front view and Fig. 5 flange shaft side view and form.Its load mode is divided into automatic control loaded and two kinds of manual control loaded.
The concrete function implementation of proprietary material testing machine of the present invention is as follows:
One, control system: pass through the required realization parameter value of input on the corresponding program interface of industrial computer 1 when loading automatically, send control signal by software to motion control card 2 then, 3 rotations of motion control card 2 processing control information rear drive stepping motors, stepping motor 3 drives flange shaft 25 through shaft coupling 5 and rotates, realize loading automatically, directly decide manual loading rod 26 during manual loading and drive flange shaft 25 rotations, realize manual loading with the manpower rotation.
Two, detection system: the specific implementation of detection system is by GGD19-LVDT stretching displacement sensor 10, GGD19-LVDT torsional displacement sensor 11, STSS-1 ess-strain module 4, first load sensor 12, second load sensor 13 is formed, can pass through first load sensor 12 during loading, second load sensor 13 obtains the ess-strain signal, first load sensor 12 then, second load sensor 13 sends the ess-strain signal to STSS-1 ess-strain module 5, and the ess-strain module by signal is handled ess-strain is realized demonstrating in real time in the back on industrial computer 1 variation.GGD19-LVDT stretching displacement sensor 10, GGD19-LVDT torsional displacement sensor 11 can detect the test specimen change in displacement after the loading, send signal to industrial computer 1 and realize showing in real time change in displacement.
Three, the location loads system: during the tension and compression test, grooved nut 8 and flange shaft 25 move forward and backward by driving grooved nut 8 with being threaded of grooved nut 8, realize the tension and compression to test specimen 19.Test specimen 19, grooved nut 8, location are loaded support 9 and connect together by second gathering sill 28 with three cylindrical pin 21.The other end of test specimen 19 is placed on the support pedestal 16, with first straight pin 18 by the fixing test specimen 19 of pin-and-hole, simultaneously with the degree of freedom of fastening bolt 14 extruding parallels 15 restriction test specimens 19.When flange shaft 25 is rotated, move forward and backward, realize tension and compression test test specimen because the axial restraint effect of hexagonal nut 24 makes flange shaft 25 drive grooved nut 8.It has utilized the irreversible characteristic of overrunning clutch, realizes keeping the constant of loaded load in the process of the test.
During twisting test, after in slide block 23 moves to the flange shaft keyway, channel nut 8 is rotated with flange shaft 25, the rotation of flange shaft 25 drives grooved nut 8 and rotates, and by first gathering sill 27 end of test specimen 19 and grooved nut 8 are connected together with second straight pin 20, the other end of test specimen 19 is placed on the support pedestal 16, with first straight pin 18 by the fixing test specimen 19 of pin-and-hole, simultaneously with the degree of freedom of fastening bolt 14 extruding parallels 15 restriction test specimens 19.Flange shaft 25 drives test specimen 19 by grooved nut 8 and rotates, and realizes reversing test specimen.Because the restriction of overrunning clutch 6 makes flange shaft 25 unidirectionally to rotate, the backward rotation of flange shaft 25 when preventing to carry out twisting test realizes the twisting test to test specimen.It has utilized the irreversible characteristic of overrunning clutch, realizes keeping the constant of loaded load in the process of the test.
More than if experiment drives grooved nuts 8 motion together will realize manual loading the time as long as rotation manual loading bar 26 drives flange shaft 25, can realize special tests such as a series of twisting tension and compression.

Claims (3)

1. a location loading material testing machine is made up of control system, detection system, location loading system three parts; Control system is to pass through software systems controlled motion control card (2) by industrial computer (1), makes fortune power control fabrication (2) drive stepping motor (3) and rotates drive flange shaft (25) realization motion control behind shaft coupling (5); Detection system is made up of STSS-1 ess-strain module (4), GGD19-LVDT stretching displacement sensor (10), GGD19-LVDT torsional displacement sensor (11), first load sensor (12), second load sensor (13), obtain the ess-strain signal by the sensor that loads the position during location test, send first load sensor (12), second load sensor (13) ess-strain signal to STSS-1 ess-strain module (4) then; Obtain displacement signal by GGD19-LVDT displacement transducer (10), realize that the location detects the variation of ess-strain in real time; It is characterized in that: the location loading system is made up of firm banking (17), support pedestal (16) and loading support section (I), and support pedestal (16) and loading support section (I) lay respectively at the two ends of firm banking (17); Support pedestal (16) top is provided with trip bolt (14), and effect is that test specimen (19) is applied fixing hinged location, and support pedestal (16) middle part is provided with pin-and-hole, is used for fixing test specimen (19); Loading support section (I) is made up of location loading support (9), flange shaft (25), overrunning clutch (6), rolling bearing (7), grooved nut (8) and two slide blocks (23); The location loads support (9) and is fixed on the firm banking (17), the location loads on the support (9) three gathering sills, first gathering sill (27) is that the vertical degree of freedom of restriction realizes the tension and compression effect, second gathering sill (28) is that the limit levels degree of freedom realizes twisting action, and the 3rd gathering sill (29) effect is the move left and right by the 3rd gathering sill (29) regulating tank inner slide (23); Overrunning clutch (6) and rolling bearing (7) are fixed on the location side by side and load support (9) the inside, wherein overrunning clutch (6) is positioned at the outside of rolling bearing (7), flange shaft (25) two ends are threaded, left end shaft shoulder place has two and the corresponding keyway of channel nut (8) keyway, after in slide block (23) moves to flange shaft (25) keyway, channel nut (8) and flange shaft (25) circumferentially are fixed together and rotate, flange shaft (25) one ends are fixing with hexagonal nut (24) by screw thread, the other end is connected with channel nut (8) by screw thread, and flange shaft (25) is by overrunning clutch (6), the hexagonal nut (24) of rolling bearing (7) and end loads support (9) circular cavity centerline in the location and fixes; Grooved nut (8) right side becomes thread connection with flange shaft (25), the left side is the flute profile cavity, radially be distributed with two through holes on the flute profile cavity, the position of through hole is corresponding with first gathering sill (27) and second gathering sill (28) on loading support pedestal on two.
2. the described new material testing machine of claim 1 is characterized in that: flange shaft (25) is that the centre of gyration rotates with rolling bearing (7) and overrunning clutch (6) in the loading system of described location; The location loading system is utilized the irreversible characteristic of overrunning clutch (6), realizes keeping the constant of loaded load in the process of the test.
3. the using method of the described location loading material testing machine of claim 1, it is characterized in that: during the tension and compression test, test specimen (19) is put into grooved nut (8) cavity, go up and corresponding through hole of first gathering sill (27) and test specimen (19) with first gathering sill (27), grooved nut (8) that second straight pin (20) passes on the location loading support (9); Control system drives stepping motor (3) and rotates drive flange shaft (25) rotation behind shaft coupling (5), flange shaft (25) forms the screw thread motion with grooved nut (8), promptly converts the location tension and compression load test of the rectilinear motion realization of grooved nut (8) to test specimen (19) to by rotatablely moving of flange shaft (25); During twisting test, go up and corresponding through hole of second gathering sill (28) and test specimen with second gathering sill (28), grooved nut (8) that three cylindrical pin (21) passes on the location loading support (9); After in two slide blocks (23) move to flange shaft (25) keyway, circumferentially fixing flange shaft (25) and grooved nut (8), make flange shaft (25) and the no relative motion of channel nut (8), one common peripheral loads the rotation of support (9) circular cavity center line around the location, realize the location twisting test to test specimen (19).
CN2010101903144A 2010-06-02 2010-06-02 Location loading material testing machine CN101881710B (en)

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Application Number Priority Date Filing Date Title
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CN101881710B CN101881710B (en) 2012-11-07

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Cited By (39)

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CN102174945A (en) * 2011-01-29 2011-09-07 东北大学 Mechanical driving device with output displacement and torsion
CN102288484A (en) * 2011-05-12 2011-12-21 通标标准技术服务(上海)有限公司 Performance testing method and performance testing device for plastic spiral cove
CN104297046A (en) * 2014-10-08 2015-01-21 中国矿业大学 Device and method for multi-axis fretting fatigue test of steel wire
CN104359773A (en) * 2014-10-24 2015-02-18 同济大学 Tensile fatigue and torsional fatigue testing machine for automobile parts
CN105372127A (en) * 2014-08-22 2016-03-02 郑全山 Tension-compression and torsion composite loading testing machine
CN105445123A (en) * 2015-11-13 2016-03-30 宁波星箭航天机械有限公司 Twist test device for high-pressure rubber hose
CN105865926A (en) * 2016-06-24 2016-08-17 王秀芬 Loading device for workpiece rigidity test and utilization method of loading device
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CN102174945A (en) * 2011-01-29 2011-09-07 东北大学 Mechanical driving device with output displacement and torsion
CN102288484A (en) * 2011-05-12 2011-12-21 通标标准技术服务(上海)有限公司 Performance testing method and performance testing device for plastic spiral cove
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CN106198211A (en) * 2016-06-24 2016-12-07 王秀芬 A kind of material stiffness test dust-proof charger and using method thereof
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CN106198183A (en) * 2016-06-24 2016-12-07 林开笔 A kind of environment-friendly type workpiece test charger and using method thereof
CN106198188A (en) * 2016-06-24 2016-12-07 王秀芬 A kind of antiwear charger and using method thereof
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CN105865926A (en) * 2016-06-24 2016-08-17 王秀芬 Loading device for workpiece rigidity test and utilization method of loading device
CN106198212A (en) * 2016-06-24 2016-12-07 林清 The charging assembly of a kind of workpiece test and using method thereof
CN106198186A (en) * 2016-06-24 2016-12-07 王秀芬 A kind of material stiffness test loading equipemtn and using method thereof
CN106198176A (en) * 2016-06-24 2016-12-07 王秀芬 A kind of loading equipemtn for testing material stiffness and using method thereof
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