CN104007032B - The standard hardness machine of 2 high-precision force sensors of a kind of employing - Google Patents
The standard hardness machine of 2 high-precision force sensors of a kind of employing Download PDFInfo
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- CN104007032B CN104007032B CN201410268048.0A CN201410268048A CN104007032B CN 104007032 B CN104007032 B CN 104007032B CN 201410268048 A CN201410268048 A CN 201410268048A CN 104007032 B CN104007032 B CN 104007032B
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Abstract
The standard hardness machine of 2 High Precision Strength Measurement Sensors of a kind of employing, overcome existing electric loading high-precision hardness tester and only adopted a power sensor, can not meet the requirement of high-acruracy survey within the scope of compared with wide-range, or need the extremely expensive special sensor of special customization to realize, expensive, and can not meet the problem that 0.1% afterburning accuracy Design requires, feature is below middle cross beam, to be provided with by spring base, spring, support bar fairlead, the limiter mechanism of support bar and sill composition, between support bar fairlead and sill, there is the first gap, lower range power sensor is installed between spring base and pressing head seat, a large amount range force sensor is installed between base frame and workbench, beneficial effect is, can ensure to realize the high-acruracy survey within the scope of gamut on the accurate hardness tester of a station symbol, long-term reliability and the service life of hardness tester work are improved, and reduce manufacturing cost, easy to utilize.
Description
Technical field
The invention belongs to hardness detection technique field, particularly the standard of 2 high-precision force sensors of a kind of employing is hardDegree machine.
Background technology
Existing electric loading high-precision hardness tester only adopts a power sensor. The reheat range that hardness examination criteria requiresWider, for example, Vickers hardness requires from 1Kg to 100Kg, and Rockwell hardness requires from 3Kg to 150Kg, Brinell hardness require from187.5Kg is to 3000Kg. For the confidential height that guarantee test power is measured in such wide region of high-precision standard hardnessPrecision, is difficult to accomplish, reason is that the certainty of measurement of power sensor is the percentage according to full scale with a power sensor(FS%) provide. The standard hardness machine that is applied to hardness number transmission of quantity value is a kind of hardometer higher to dynamometry required precision,Confidential the asking of standard hardness has unified high accuracy within the scope of gamut, and for example Brinell hardness Standard Machine requires at gamut modelIn enclosing, all there is 0.1% afterburning precision (GB/T231.3), adopt an independent power sensor to be just difficult to reach at the low side of rangeTo the afterburning precision of regulation. In order to reach the requirement of such high-acruracy survey within the scope of compared with wide-range, need to determine especiallyThe special sensor that system is extremely expensive is realized, and due to expensive, is difficult to apply. In the prior art, in the face of suchProblem, normally by contract measurement scope, replaces a wide-range hardness with the high-precision hardness tester of two different rangesStandard Machine.
Application number is that 2013202810381 utility model discloses a kind of planer-type Brinell hardness testing arrangement, this dressPut and adopt a power sensor, and a buffer gear is set in the upper end of pressure head assembly, described pressure head assembly comprises hardometerMain shaft, pressure head, the power sensor being connected with hardometer main shaft and the buffer body that is arranged on power sensor upper end, this device is uncommonHope that in fact, the effect of buffer gear is just carried out the speed that applies test force by buffer gear controlled pressure effectivelyControl, avoid producing and impact, size that can not Control experiment power.
The utility model of application number-be 90226136 discloses a kind of double-range power sensor, this double-range power sensorFor the static experiment in rocket engine thrust ground and electronic scale. This double-range power sensor is by the elasticity of two ranges of sizeBody series winding forms overall structure, gapped between small-range elastomer and base, can meet high thrust and low thrust is measured respectivelyRequirement, thereby can meet the higher certainty of measurement of realization in wider range ability. But, in fact, such oneOn two ranges of height of individual power sensor, realize high-acruracy survey simultaneously and be difficult to, such power sensor need to be determined especiallySystem, and expensive, be difficult to realize suitability for industrialized production. Especially by whole one of the elastomer series winding formation of two ranges of sizeBody, all having increased difficulty aspect manufacture, compensation and correction, is also difficult to realize high accuracy with respect to the power sensor of single range,So the certainty of measurement of the related double-range power sensor of this patent can only reach 0.1%. Can not meet 0.1% afterburning precisionDesigning requirement because will meet 0.1% afterburning precision, in afterburner system, the certainty of measurement of power sensor will exceed oneRank, at least will reach 0.03%.
Summary of the invention
Problem to be solved by this invention is, overcomes the deficiencies in the prior art part, and a kind of 2 high-precision forces that adopt are providedThe standard hardness machine of sensor, by connecting 2 high-precision force sensings on the measurement main-shaft axis at the accurate hardness tester of a station symbolDevice is realized high-acruracy survey simultaneously, and is reduced manufacturing cost on two ranges of height, and the industrialization of being convenient to standard hardness machine is rawProduce and apply.
The technical solution used in the present invention comprises base frame, column, guide rail, slide block, entablature, middle cross beam, pressing head seat, pressure headAnd workbench, on described entablature, augmentor being installed, described middle cross beam is a structural member, includes a casing,On the top board of casing, there is a nut seat, on the base plate of casing or top board, be processed with support bar installing hole, at the end of casingPlate lower surface center processed springs seat installing blind is processed with respectively slide block and installs on the left plate of casing and right plateHole, casing is connected with slide block by the slide block installing hole of the left and right sides, and mounting spring seat in spring base installing blind, describedIn spring base installing blind, be also installed with the spring base fairlead that spring base is play the guiding role, below described middle cross beamThe limiter mechanism being made up of spring base, spring, support bar fairlead, support bar and sill is installed, at support bar fairleadAnd between sill, have the first gap, between spring base and middle cross beam, have the second gap, described spring base and sill itBetween lower range power sensor is installed, a large amount range force sensor is installed between described base frame and workbench, described augmentor byServomotor, reductor, shaft coupling, leading screw and screw composition, reductor is arranged on entablature, and the top of reductor is installed and is watchedTake motor, the below of reductor connects leading screw by shaft coupling, and leading screw is connected with screw, and described servomotor is under microcomputer controlWork.
The technical solution used in the present invention comprises base frame, column, guide rail, slide block, entablature, middle cross beam, pressing head seat, pressure headAnd workbench, on described entablature, augmentor being installed, described middle cross beam is a structural member, includes a casing,On the top board of casing, there is a nut seat, on the base plate of casing or top board, be processed with support bar installing hole, at the end of casingPlate lower surface center processed springs seat installing blind is processed with respectively slide block and installs on the left plate of casing and right plateHole, casing is connected with slide block by the slide block installing hole of the left and right sides, and mounting spring seat in spring base installing blind, describedIn spring base installing blind, be also installed with the spring base fairlead that spring base is play the guiding role, below described middle cross beamThe limiter mechanism being made up of spring base, spring, support bar fairlead, support bar and sill is installed, at support bar fairleadAnd between sill, there is the first gap, between spring base and middle cross beam, have the second gap, between described spring base and sillLower range power sensor is installed, between between described pressure head and sill, a large amount range force sensor is installed, described augmentorBe made up of servomotor, reductor, shaft coupling, leading screw and screw, reductor is arranged on entablature, and install the top of reductorServomotor, the below of reductor connects leading screw by shaft coupling, and leading screw is connected with screw, and described servomotor is in microcomputer controlLower work.
Below described nut seat, be provided with an oil storage pool, on the position higher than liquid level on described oil storage pool, be provided with exhaustHole and oil spilling hole.
Compared with prior art, the invention has the beneficial effects as follows:
(1) scleroscopic certainty of measurement depends on the afterburning precision of test force to a great extent, the reinforcing essence of test forceDegree depends primarily on again the certainty of measurement of power sensor, and each power sensor has an applicable measurement category, measures modelEnclose wider, will be lower in the low side certainty of measurement of measurement category because the certainty of measurement of power sensor is according to full scalePercentage (FS%) provides. The present invention adopts the power sensor of 2 different ranges of height, and one of them power sensor is for surveyingAmount range compared with lower part, another power sensor divides for the higher part of measuring range, for each power sensor,Dwindle measurement category, ensured high accuracy, thereby can ensure to realize within the scope of gamut on the accurate hardness tester of a station symbolHigh-acruracy survey, compared with using a double-range power sensor, can realize higher certainty of measurement, and certainty of measurement can reachTo 0.03%, to reach 0.1% thereby meet the afterburning precision about standard hardness machine in hardness test standard (GB/T231.3)Designing requirement. In addition, owing to adopting the power sensor of 2 single ranges, do not need special customization, reduced manufacturing of machineThis, be convenient to realize suitability for industrialized production and apply.
(2), on hardometer, power sensor is need to be installed to measure among the axis system of main shaft, like this, and testPower can accurately be passed through power sensor passes to measuring on pressure head, and measures in axis system at one, if connect 2 differencesThe power sensor of range, in the time applying larger test force, the power sensor of lower range will damage because of overload. The present invention due toAdopt the limiter mechanism being formed by spring, spring base, support bar fairlead, support bar and sill, make lower range power sensorOnly bear the test force in its range ability, higher than the test force of its range ability be by support bar fairlead, sill andPressing head seat is delivered on pressure head; And a large amount range force sensor is only responsible for measuring test more than lower range power transducer rangePower, has so just realized less test force lower range force sensor measuring, larger test force a large amount range force sensorMeasure, thereby realized the high-acruracy survey within the scope of gamut.
(3) the present invention is provided with oil storage pool on middle cross beam, in each measuring process, and all can be by leading screw by oil storage poolInterior lubricating oil takes in screw, plays self-lubricating function, has ensured long-term reliability and the service life of hardness tester work.
(4) the present invention is installed with spring base fairlead in spring base installing blind, can play guiding to spring baseEffect; The corresponding support bar fairlead of installing below support bar installing hole is installed support bar in support bar fairlead simultaneously, canSo that support bar is play the guiding role, owing to adopting two guidance systems of spring base fairlead and support bar fairlead simultaneously, therebyEnsure that limiter mechanism can only move along the axis direction of measuring main shaft, has guaranteed the stability of certainty of measurement and complete machine workAnd reliability.
(5) when the present invention works, servomotor is started working under microcomputer control, drives by reductor and shaft couplingLeading screw rotation, screw promotes middle cross beam and moves down along guide rail by slide block under the effect of leading screw, when pressure head touches to be measuredAfter standard block of hardness, the test force being applied on pressure head increases gradually, and this test force is by pressing head seat, lower range power sensingDevice and spring base are compressed spring, and now, sill and support bar are promoted synchronously to move up by pressing head seat, sillAnd the first gap between support bar fairlead dwindles gradually, the second gap between spring base and middle cross beam also dwindles thereupon,In this process, the suffered test force of pressure head is all by lower range power sensor, and lower range power sensor is to Department of SurveySystem transmits test force signal. In the time that test force value exceedes the full scale value of lower range power sensor, sill and support bar guidingCover contact, the first gap therebetween disappears, and the second gap between spring base and middle cross beam still exists, while continuing reinforcing, logicalThe test force of crossing lower range power sensor no longer increases, and lower range power sensor has been played to limiter effect, thereby protects low amountRange force sensor is not damaged; Now, pass by support bar fairlead higher than the test force of lower range power transducer range scopeBe delivered on sill and pressing head seat and pressure head, like this, just solved the power value restricted problem of lower range power sensor. Add in measurementIn the process of power, total Test power all can be delivered on a large amount range force sensor by workbench, when test force is greater than lower rangeWhen the full scale value of power sensor, test force is detected by a large amount range force sensor, and measuring-signal sends measuring system to.
Brief description of the drawings
Fig. 1 is the structural representation of the specific embodiment of the invention 1;
Fig. 2 is the structural representation of the specific embodiment of the invention 2;
Fig. 3 is limiter of the present invention mechanism partial enlarged drawing;
Fig. 4 is the main pseudosection of middle cross beam of the present invention;
Fig. 5 is the top view of Fig. 4.
In figure:
1. base frame, 2. a large amount range force sensor, 3. sill,
4. column, 5. guide rail, 6. slide block,
7. middle cross beam,
7-1. casing, 7-2. square hole, 7-3. positioning step,
7-4. steam vent, 7-5. oil spilling hole, 7-6. drain oil,
7-7. spring base installing blind, 7-8. support bar installing hole,
7-9. oil storage pool, 7-10. slide block installing hole, 7-11 nut seat,
8. entablature, 9. servomotor, 10. reductor,
11. shaft couplings, 12. leading screws, 13. screws,
14. springs, 15. spring base fairleads, 16. spring bases,
17. lower range power sensors, 18. support bar fairleads,
19. support bars, 20, lower clamp nut, 21. pressing head seats,
22. pressure heads, 23. block of hardness, 24. workbench,
25. high range power sensor installation seats, 26. second gaps,
27. first gaps, 28. sensor connector, 29. tighten nut.
Detailed description of the invention
Detailed description of the invention 1
As shown in Fig. 1, Fig. 3, Fig. 4 and Fig. 5, the present invention is made up of base frame 1,2 of left and right column 4 and entablature 8 by oneDoor frame, on described entablature 8, be provided with by servomotor 9, reductor 10, shaft coupling 11, leading screw 12 and screw 13 and formAugmentor, wherein, reductor 10 is arranged on entablature 8, servomotor 9, reductor 10 are installed in the top of reductor 10Below connect leading screw 12 by shaft coupling 11, leading screw 12 is connected with screw 13, in the inner side of 2 columns 4 in about door frame respectivelyGuide rail 5 is installed, slide block 6 is installed on guide rail 5, slide block 6 is connected with middle cross beam 7; Described middle cross beam 7 is a Welding StructurePart or cast structure part, middle cross beam 7 has 6 casing 7-1, has a nut seat 7-11, at silk on the top board of casing 7-1Female seat 7-11 below is provided with an oil storage pool 7-9, is provided with steam vent 7-4 and overflows on the position higher than liquid level on oil storage pool 7-9Oilhole 7-5, specifically can be provided with steam vent 7-4 and oil spilling hole 7-5 on the top board of casing 7-1 or on the sidewall of nut seat 7-11,Be provided with drain oil 7-6 in the bottom of oil storage pool 7-9, the top board left and right sides of described casing 7-1 is processed with square hole 7-2, is convenient to peaceDress support bar 19 upper ends tighten nut 29, on the left plate of casing 7-1 and right plate, be processed with respectively slide block installing hole7-10 and positioning step 7-3, be processed with support bar installing hole 7-8 in the base plate left and right sides of casing 7-1, at the end of casing 7-1Plate lower surface center is provided with a spring base installing blind 7-7, the slide block installing hole 7-10 of casing 7-1 by the left and right sides withSlide block 6 connects, and locates by positioning step 7-3, at the upper surface of nut seat 7-11, screw 13 is installed, the interior installation silk of screw 13Thick stick 12, mounting spring seat 16 in spring base installing blind 7-7 is also installed with spring in spring base installing blind 7-7Seat fairlead 15, so that spring base 16 is play the guiding role, below described middle cross beam 7, be provided with by spring base 16, spring 14,The limiter mechanism that support bar fairlead 18, support bar 19 and sill 3 form, mounting spring 14 in spring base 16, at springBetween seat 16 and middle cross beam 7, there is the second gap 26, the corresponding support bar guiding of installing below the support bar installing hole 7-8 of 2 of left and rightCover 18 is installed support bar 19 in support bar fairlead 18, sill 3 is installed and is passed through support in the lower end of 2 support bars 19The lower clamp nut 20 of bar lower end is fixing, has the first gap 27, spring base 16 between support bar fairlead 18 and sill 3There is a center bolt lower end, and this center bolt is connected with lower range power sensor 17, at the centre bore of sill 3, pressure is installedHeadstock 21, pressure head 22 is installed in pressing head seat 21 lower ends, and pressing head seat 21 upper ends are connected with lower range power sensor 17, at spring base16 and sill 3 between lower range power sensor 17 is installed, on the upper surface of base frame 1 and the coaxial position of pressure head 22 by highRange power sensor installation seat 25 is installed a large amount range force sensor 2, in the upper end of a large amount range force sensor 2, workbench is installed24, an a large amount range force sensor 2 is installed between described base frame 1 and workbench 24.
When work, first on workbench 24, place standard block of hardness 23 to be measured, servomotor 9 starts work under microcomputer controlDo, drive leading screw 12 to rotate by reductor 10 and shaft coupling 11, screw 13 promotes middle cross beam 7 under the effect of leading screw 12 to be passed throughSlide block 6 moves down along guide rail 5, when pressure head 22 touches after standard block of hardness 23 to be measured, is applied to the test force on pressure head 22Increase gradually, this test force is compressed spring 14 by pressing head seat 21, lower range power sensor 17 and spring base 16,Now, sill 3 and support bar 19 are promoted synchronously to move up by pressing head seat 21, between sill 3 and support bar fairlead 18The first gap 27 dwindle gradually, the second gap 26 between spring base 16 and middle cross beam 7 also dwindles thereupon, in this processIn, the suffered test force of pressure head 22 is all by lower range power sensor 17, and lower range power sensor 17 passes to measuring systemSend test force signal. In the time that test force value exceedes the full scale value of lower range power sensor 17, sill 3 and support bar fairlead18 contacts, the first gap 27 therebetween disappears, and the second gap 26 between spring base 16 and middle cross beam 7 still exists, and continues to addWhen power, no longer increase by the test force of lower range power sensor 17, lower range power sensor 17 has been played to limiter effect, fromAnd protection lower range power sensor 17 is not damaged; Now, logical higher than the test force of lower range power sensor 17 range abilitiesCross support bar fairlead 18 and be delivered on sill 3 and pressing head seat 21 and pressure head 22, like this, just solved lower range power sensor17 power value restricted problem. In the afterburning process of measurement, total Test power all can be delivered to high range power by workbench 24On sensor 2, in the time that test force is greater than the full scale value of lower range power sensor 17, test force is examined by a large amount range force sensor 2Survey, measuring-signal sends measuring system to.
Detailed description of the invention 2
As shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, identical with detailed description of the invention 1, difference is, workbench 24 is directly installedOn base frame 1, will between described base frame 1 and workbench 24, install a large amount range force sensor 2 change to described pressure head 22 withA large amount range force sensor 2 is installed between sill 3, in order to realize this concrete technical scheme, is installed at the centre bore of sill 3A sensor connector 28, connects a large amount range force sensor 2 by sensor connector 28, connects in a large amount range force sensor 2 lower endsConnect pressing head seat 21, pressure head 22 is installed in pressing head seat 21 lower ends, between pressure head 22 and sill 3, a large amount range force sensor 2 is installed,Can realize the technique effect same with detailed description of the invention 1.
Claims (3)
1. a standard hardness machine that adopts 2 high-precision force sensors, comprises base frame (1), column (4), guide rail (5), slide block(6), entablature (8), middle cross beam (7), pressing head seat (21), pressure head (22) and workbench (24), install described entablature (8) is upperHave augmentor, it is characterized in that, described middle cross beam (7) is a structural member, includes a casing (7-1), at casing (7-1) on top board, there is a nut seat (7-11), on the base plate of casing (7-1) or top board, be processed with support bar installing hole (7-8), at the base plate lower surface center processed springs seat installing blind (7-7) of casing (7-1), at the left plate of casing (7-1) andOn right plate, be processed with respectively slide block installing hole (7-10), the slide block installing hole (7-10) of casing (7-1) by the left and right sides withSlide block (6) connects, and mounting spring seat (16) in spring base installing blind (7-7), in described spring base installing blind (7-7)Also be installed with the spring base fairlead (15) that spring base (16) is play the guiding role, below described middle cross beam (7), installThere is the limiter mechanism being formed by spring base (16), spring (14), support bar fairlead (18), support bar (19) and sill (3),Between support bar fairlead (18) and sill (3), there is the first gap (27), between spring base (16) and middle cross beam (7), haveLower range power sensor (17) is installed, at described base frame in the second gap (26) between described spring base (16) and sill (3)(1) and a large amount range force sensor (2) is installed between workbench (24), described augmentor is by servomotor (9), reductor(10), shaft coupling (11), leading screw (12) and screw (13) composition, it is upper that reductor (10) is arranged on entablature (8), reductor (10)Top install servomotor (9), the below of reductor (10) by shaft coupling (11) connect leading screw (12), leading screw (12) with silkFemale (13) connect, and described servomotor (9) is worked under microcomputer control.
2. a standard hardness machine that adopts 2 high-precision force sensors, comprises base frame (1), column (4), guide rail (5), slide block(6), entablature (8), middle cross beam (7), pressing head seat (21), pressure head (22) and workbench (24), install described entablature (8) is upperHave augmentor, it is characterized in that, described middle cross beam (7) is a structural member, includes a casing (7-1), at casing (7-1) on top board, there is a nut seat (7-11), on the base plate of casing (7-1) or top board, be processed with support bar installing hole (7-8), at the base plate lower surface center processed springs seat installing blind (7-7) of casing (7-1), at the left plate of casing (7-1) andOn right plate, be processed with respectively slide block installing hole (7-10), the slide block installing hole (7-10) of casing (7-1) by the left and right sides withSlide block (6) connects, and mounting spring seat (16) in spring base installing blind (7-7), in described spring base installing blind (7-7)Also be installed with the spring base fairlead (15) that spring base (16) is play the guiding role, below described middle cross beam (7), installThere is the limiter mechanism being formed by spring base (16), spring (14), support bar fairlead (18), support bar (19) and sill (3),Between support bar fairlead (18) and sill (3), there is the first gap (27), between spring base (16) and middle cross beam (7), haveThe second gap (26), installs lower range power sensor (17) between described spring base (16) and sill (3), at described pressure head(22) and a large amount range force sensor (2) is installed between between sill (3), described augmentor is by servomotor (9), reductor(10), shaft coupling (11), leading screw (12) and screw (13) composition, it is upper that reductor (10) is arranged on entablature (8), reductor (10)Top install servomotor (9), the below of reductor (10) by shaft coupling (11) connect leading screw (12), leading screw (12) with silkFemale (13) connect, and described servomotor (9) is worked under microcomputer control.
3. according to the standard hardness machine of 2 high-precision force sensors of a kind of employing described in claim 1 or 2, it is characterized in that,Described nut seat (7-11) below is provided with an oil storage pool (7-9), on the upper position higher than liquid level of described oil storage pool (7-9), establishesThere are steam vent (7-4) and oil spilling hole (7-5).
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| CN201410268048.0A CN104007032B (en) | 2014-06-17 | 2014-06-17 | The standard hardness machine of 2 high-precision force sensors of a kind of employing |
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| CN201410268048.0A CN104007032B (en) | 2014-06-17 | 2014-06-17 | The standard hardness machine of 2 high-precision force sensors of a kind of employing |
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| CN104007032B true CN104007032B (en) | 2016-06-08 |
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| CN106323780A (en) * | 2016-11-04 | 2017-01-11 | 上海奥龙星迪检测设备有限公司 | Machine head moving type Vickers hardness meter |
| CN109323935A (en) * | 2018-11-23 | 2019-02-12 | 中国汽车技术研究中心有限公司 | A kind of protective device and impact device of impact device load transducer |
| CN110411835A (en) * | 2019-08-26 | 2019-11-05 | 广东嘉仪仪器集团有限公司 | A kind of plastic bottle press strength tester with novel sensor protective device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS61260124A (en) * | 1985-05-15 | 1986-11-18 | Tokyo Electric Co Ltd | Multi-range load cell weigher |
| US7284414B2 (en) * | 2004-12-16 | 2007-10-23 | Shaoming Wu | Hardness testing device |
| CN201007701Y (en) * | 2006-12-06 | 2008-01-16 | 莱州华银试验仪器有限公司 | Sclerometer automatic adding/unloading unit |
| CN201322710Y (en) * | 2008-12-22 | 2009-10-07 | 谢让明 | Depth controllable high precision rebound tester |
| CN101660988B (en) * | 2009-09-25 | 2011-06-08 | 上海大学 | Portable on-site Brinell hardness tester |
| CN201780243U (en) * | 2010-09-14 | 2011-03-30 | 郑爱东 | Brinell hardness tester |
| CN103017943A (en) * | 2012-12-10 | 2013-04-03 | 大连博控科技股份有限公司 | Double-range pressure sensing mechanism |
| CN103033428B (en) * | 2012-12-13 | 2014-12-24 | 张天宝 | Digital display Barcol hardness gauge |
| CN203443871U (en) * | 2013-08-28 | 2014-02-19 | 吉林大学 | Free-surface-orientated ultra-precision nanoindentation and nanoscratch processing system |
| CN203929546U (en) * | 2014-06-17 | 2014-11-05 | 沈阳天星试验仪器有限公司 | The standard hardness machine of 2 high-precision force sensors of a kind of employing |
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