CN104007032A - Standard hardness machine with two high-precision force sensors - Google Patents

Standard hardness machine with two high-precision force sensors Download PDF

Info

Publication number
CN104007032A
CN104007032A CN201410268048.0A CN201410268048A CN104007032A CN 104007032 A CN104007032 A CN 104007032A CN 201410268048 A CN201410268048 A CN 201410268048A CN 104007032 A CN104007032 A CN 104007032A
Authority
CN
China
Prior art keywords
support bar
range
sill
precision
standard hardness
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201410268048.0A
Other languages
Chinese (zh)
Other versions
CN104007032B (en
Inventor
张凤林
赵凤营
刘丽萍
王作元
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenyang Tianxing Test Instrument Co.,Ltd.
Original Assignee
TX TESTING INSTRUMENTS Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TX TESTING INSTRUMENTS Co filed Critical TX TESTING INSTRUMENTS Co
Priority to CN201410268048.0A priority Critical patent/CN104007032B/en
Publication of CN104007032A publication Critical patent/CN104007032A/en
Application granted granted Critical
Publication of CN104007032B publication Critical patent/CN104007032B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

Provided is a standard hardness machine with two high-precision force sensors. The problems that only one force sensor is used in an existing electric loading high-precision sclerometer, the requirement for high-precision measuring in a wide range cannot be met, or the requirement is met by specially customizing a special sensor which is very expensive, the price is high, and the designing requirement for force exerting precision of 0.1% cannot be met are solved. The standard hardness machine is characterized in that a force limiting mechanism composed of a spring base, a spring, a supporting rod guiding sleeve, a supporting rod and a lower horizontal beam is arranged below a middle horizontal beam, a first gap is arranged between the supporting rod guiding sleeve and the lower horizontal beam, a low-range force sensor is arranged between the spring base and a pressing head base, and a high-range force sensor is arranged between a bottom table and a workbench. The standard hardness machine has the advantages that the fact that high-precision measuring in the whole range can be achieved on the standard hardness machine can be guaranteed, the long-time reliability of hardness machine working is improved, service life is prolonged, manufacturing cost is lowered, and application and promotion are convenient.

Description

The standard hardness machine of 2 high-precision force sensors of a kind of employing
Technical field
The invention belongs to hardness detection technique field, particularly the standard hardness machine of 2 high-precision force sensors of a kind of employing.
Background technology
Existing electric loading high-precision hardness tester only adopts a power sensor.The reheat range that hardness examination criteria requires is wider, and for example, Vickers hardness requires from 1Kg to 100Kg, and Rockwell's hardness requires from 3Kg to 150Kg, and Brinell hardness requires from 187.5Kg to 3000Kg.For the confidential high precision that warranty test power is measured in such wide region of high-precision standard hardness, with a power sensor, be difficult to accomplish, reason is that the measuring accuracy of power sensor is that number percent (FS%) according to full scale provides.The standard hardness machine that is applied to hardness number transmission of quantity value is a kind of sclerometer higher to dynamometry accuracy requirement, confidential the asking of standard hardness has unified high precision within the scope of gamut, for example Brinell hardness Standard Machine requires within the scope of gamut, all to have 0.1% afterburning precision (GB/T231.3), adopts an independent power sensor at the low side of range, to be just difficult to reach 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 the extremely expensive special sensor of special customization to realize, due to expensive, be difficult to apply.In the prior art, in the face of such problem, normally, by contract measurement scope, with the high-precision hardness tester of two different ranges, replace a wide-range hardness standard machine.
Application number is that 2013202810381 utility model discloses a kind of planer-type Brinell hardness proving installation, this device adopts a power sensor, and a buffer gear is set in the upper end of pressure head assembly, described pressure head assembly comprises sclerometer main shaft, pressure head, the power sensor being connected with sclerometer main shaft and the buffer body that is arranged on power sensor upper end, this device wishes to pass through buffer gear controlled pressure effectively, in fact, the effect of buffer gear is just controlled applying the speed of test force, avoid produce impacting size that can not Control experiment power.
The utility model of application number-be 90226136 discloses a kind of double-range power sensor, and this double-range power sensor is for the static experiment in rocket engine thrust ground and electronic scales.This double-range power sensor forms one-piece construction by the elastic body series winding of two ranges of size, gapped between small-range elastic body and base, the requirement that high thrust and low thrust are measured respectively can be met, thereby the higher measuring accuracy of realization in wider range ability can be met.But, in fact, on two ranges of height of such power sensor, to realize high-acruracy survey simultaneously and be difficult to, such power sensor needs special customization, and expensive, is difficult to realize suitability for industrialized production.Especially the elastic body series winding of two ranges of size is formed to an integral body, power sensor with respect to single range is all increasing difficulty aspect manufacture, compensation and correction, also the measuring accuracy of the double-range power sensor that this patent is related is difficult to realize high precision, so can only reach 0.1%.Can not meet the designing requirement of 0.1% afterburning precision, because will meet 0.1% afterburning precision, in afterburner system, the measuring accuracy of power sensor will exceed a rank, at least will reach 0.03%.
Summary of the invention
Problem to be solved by this invention is, overcome the deficiencies in the prior art part, the standard hardness machine of 2 high-precision force sensors of a kind of employing is provided, by connecting 2 high-precision force sensors on the measurement main-shaft axis at the accurate hardness tester of a station symbol, on two ranges of height, realize high-acruracy survey simultaneously, and reduce manufacturing cost, be convenient to the suitability for industrialized production of standard hardness machine and apply.
The technical solution used in the present invention comprises base frame, column, entablature, middle cross beam, pressing head seat, pressure head and worktable, on described entablature, augmentor is installed, the limiter mechanism being comprised of spring base, spring, support bar orienting sleeve, support bar and sill is installed below described middle cross beam, between support bar orienting sleeve and sill, there is the first gap, lower range power sensor is installed between described spring base and sill, an a large amount range force sensor is installed between described base frame and worktable.
The technical solution used in the present invention comprises base frame, column, entablature, middle cross beam, pressing head seat, pressure head and worktable, on described entablature, augmentor is installed, the limiter mechanism being comprised of spring base, spring, support bar orienting sleeve, support bar and sill is installed below described middle cross beam, between support bar orienting sleeve and sill, there is the first gap, a lower range power sensor is installed between described spring base and sill, between between described pressure head and sill, an a large amount range force sensor is installed.
Described middle cross beam is a structural member, comprises a casing, has a nut seat on the top board of casing, is processed with support bar mounting hole, at the base plate center of casing processed springs seat installing blind on the base plate of casing or top board.
In described spring base installing blind, be installed with spring base orienting sleeve.
In described nut seat side, be provided with an oil storage pool.
On position higher than liquid level on described oil storage pool, be provided with vent port and oil spilling hole.
Compared with prior art, the invention has the beneficial effects as follows:
(1) scleroscopic measuring accuracy depends on the afterburning precision of test force to a great extent, the afterburning precision of test force depends primarily on again the measuring accuracy of power sensor, and each power sensor has an applicable measurement range, measurement range is wider, low side measuring accuracy in measurement range will be lower, because the measuring accuracy of power sensor is number percent (FS%) according to full scale, provides.The present invention adopts the power sensor of 2 different ranges of height, one of them power sensor for measure range compared with lower part, another power sensor divides for measuring the higher part of range, for each power sensor, dwindled measurement range, guaranteed high precision, thereby can guarantee to realize the high-acruracy survey within the scope of gamut on the accurate hardness tester of a station symbol, compare with a double-range power sensor of use, can realize higher measuring accuracy, measuring accuracy can reach 0.03%, thereby meet the afterburning precision about standard hardness machine in hardness test standard (GB/T231.3) and will reach 0.1% designing requirement.In addition, owing to adopting the power sensor of 2 single ranges, do not need special customization, reduced the manufacturing cost of machine, be convenient to realize suitability for industrialized production and apply.
(2) on sclerometer, power sensor is need to be installed among the axis system of measuring main shaft, like this, test force can accurately pass through power sensor passes to measuring on pressure head, and measure in axis system at one, if connect the power sensor of 2 different ranges, when applying larger test force, the power sensor of lower range will damage because of overload.The present invention is owing to adopting the limiter mechanism being comprised of spring, spring base, support bar orienting sleeve, support bar and sill, make lower range power sensor only bear the test force in its range ability, higher than the test force of its range ability, by support bar orienting sleeve, sill and pressing head seat, be delivered on pressure head; And a large amount range force sensor is only responsible for measuring test force more than lower range power transducer range, so just realized less test force lower range force sensor measuring, larger test force high range force sensor measuring, thus 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, all can the lubricating oil in oil storage pool be taken in screw by leading screw, plays self-lubricating function, has guaranteed long-term reliability and the serviceable life of hardness tester work.
(4) the present invention is installed with spring base orienting sleeve in spring base installing blind, can play the guiding role to spring base; Below support bar mounting hole, correspondence is installed support bar orienting sleeve simultaneously, in support bar orienting sleeve, support bar is installed, can play the guiding role to support bar, owing to adopting two guidance systems of spring base orienting sleeve and support bar orienting sleeve simultaneously, thereby guaranteed that limiter mechanism can only move along the axis direction of measuring main shaft, has guaranteed stability and the reliability of measuring accuracy and complete machine work.
Accompanying drawing explanation
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;
The main pseudosection of middle cross beam of the present invention on Fig. 4;
Fig. 5 is the vertical 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. vent port, 7-5. oil spilling hole, 7-6. oil drain hole,
7-7. spring base installing blind, 7-8. support bar mounting hole,
7-9. oil storage pool, 7-10. slide block mounting hole, 7-11 nut seat,
8. entablature, 9. servomotor, 10. reductor,
11. shaft couplings, 12. leading screws, 13. screws,
14. springs, 15. spring base orienting sleeves, 16. spring bases,
17. lower range power sensors, 18. support bar orienting sleeves,
19. support bars, 20, lower clamp nut, 21. pressing head seats,
22. pressure heads, 23. block of hardness, 24. worktable,
25. high range power sensor installation seats, 26. second gaps,
27. first gaps, 28. sensor connector, 29. tighten nut.
Embodiment
Embodiment 1
?as Fig. 1, Fig. 3, shown in Fig. 4 and Fig. 5, the present invention has one by base frame 1, the door frame that 2 of left and right column 4 and entablature 8 form, on described entablature 8, be provided with by servomotor 9, reductor 10, shaft coupling 11, the augmentor that leading screw 12 and screw 13 form, wherein, reductor 10 is arranged on entablature 8, servomotor 9 is installed in the top of reductor 10, the below of reductor 10 connects leading screw 12 by shaft coupling 11, leading screw 12 is connected with screw 13, inner side at 2 columns 4 in door frame left and right is separately installed with guide rail 5, 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 structural element or cast structure part, middle cross beam 7 has 6 casing 7-1, on the top board of casing 7-1, there is a nut seat 7-11, below nut seat 7-11, be provided with an oil storage pool 7-9, on position higher than liquid level on oil storage pool 7-9, be provided with vent port 7-4 and oil spilling hole 7-5, specifically can on the top board of casing 7-1 or on the sidewall of nut seat 7-11, be provided with vent port 7-4 and oil spilling hole 7-5, in the bottom of oil storage pool 7-9, be provided with oil drain hole 7-6, the top board left and right sides of described casing 7-1 is processed with square hole 7-2, what be convenient to install support bar 19 upper ends tightens nut 29, on the left plate of casing 7-1 and right plate, be processed with respectively slide block mounting hole 7-10 and positioning step 7-3, in the base plate left and right sides of casing 7-1, be processed with support bar mounting hole 7-8, in the base plate lower surface center of casing 7-1, be provided with a spring base installing blind 7-7, casing 7-1 is connected with slide block 6 by the slide block mounting hole 7-10 of the left and right sides, and locate by positioning step 7-3, upper surface at nut seat 7-11 is installed screw 13, the interior installation leading screw 12 of screw 13, mounting spring seat 16 in spring base installing blind 7-7, in spring base installing blind 7-7, be also installed with spring base orienting sleeve 15, so that spring base 16 is play the guiding role, in spring base 16, mounting spring 14, between spring base 16 and middle cross beam 7, there is the second gap 26, the corresponding support bar orienting sleeve 18 of installing below the support bar mounting hole 7-8 of 2 of left and right, support bar 19 is installed in support bar orienting sleeve 18, sill 3 fixing by the lower clamp nut 20 of support bar lower end is installed in the lower end of 2 support bars 19, between support bar orienting sleeve 18 and sill 3, there is the first gap 27, there is a center bolt lower end of spring base 16, this center bolt is connected with lower range power sensor 17, center pit at sill 3 is provided with pressing head seat 21, pressure head 22 is installed in pressing head seat 21 lower ends, pressing head seat 21 upper ends are connected with lower range power sensor 17, lower range power sensor 17 is installed between spring base 16 and sill 3, on the upper surface of base frame 1 and the coaxial position of pressure head 22, by high range power sensor installation seat 25, a large amount range force sensors 2 are installed, in the upper end of a large amount range force sensor 2, worktable 24 is installed, an a large amount range force sensor 2 is installed between described base frame 1 and worktable 24.
During work, first on worktable 24, place standard block of hardness 23 to be measured, servomotor 9 is started working under microcomputer is controlled, by reductor 10 and shaft coupling 11, drive leading screw 12 rotations, screw 13 promotes middle cross beam 7 and moves down along guide rail 5 by slide block 6 under the effect of leading screw 12, when pressure head 22 touches after standard block of hardness 23 to be measured, the test force being applied on pressure head 22 increases gradually, this test force is by pressing head seat 21, lower range power sensor 17, and spring base 16 is compressed spring 14, now, sill 3 and support bar 19 are promoted synchronously to move up by pressing head seat 21, the first gap 27 between sill 3 and support bar orienting sleeve 18 dwindles gradually, the second gap 26 between spring base 16 and middle cross beam 7 also dwindles thereupon, in this process, the suffered test force of pressure head 22 is all by lower range power sensor 17, lower range power sensor 17 transmits test force signal to measuring system.When test force value surpasses the full scale value of lower range power sensor 17, sill 3 contacts with support bar orienting sleeve 18, the first gap 27 therebetween disappears, the second gap 26 between spring base 16 and middle cross beam 7 still exists, while continuing reinforcing, test force by lower range power sensor 17 no longer increases, and lower range power sensor 17 has been played to limiter effect, thereby protection lower range power sensor 17 is not damaged; Now, higher than the test force of lower range power sensor 17 range abilities, by support bar orienting sleeve 18, be delivered on sill 3 and pressing head seat 21 and pressure head 22, like this, just solved the power value restricted problem of lower range power sensor 17.In measuring afterburning process, total Test power all can be delivered on a large amount range force sensor 2 by worktable 24, when test force is greater than the full scale value of lower range power sensor 17, test force is detected by a large amount range force sensor 2, and measuring-signal sends measuring system to.
Embodiment 2
As Fig. 2, Fig. 3, shown in Fig. 4 and Fig. 5, identical with embodiment 1, difference is, worktable 24 is directly installed on base frame 1, to change between described pressure head 22 and sill 3 a large amount range force sensor 2 is installed a large amount range force sensor 2 is installed between described base frame 1 and worktable 24, in order to realize this concrete technical scheme, center pit at sill 3 is installed a sensor connector 28, by sensor connector 28, connect a large amount range force sensor 2, in a large amount range force sensor 2 lower ends, connect 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 embodiment 1.

Claims (6)

1. a standard hardness machine that adopts 2 high-precision force sensors, comprise base frame (1), column (4), entablature (8), middle cross beam (7), pressing head seat (21), pressure head (22) and worktable (24), on described entablature (8), augmentor is installed, it is characterized in that, below described middle cross beam (7), be provided with by spring base (16), spring (14), support bar orienting sleeve (18), the limiter mechanism that support bar (19) and sill (3) form, between support bar orienting sleeve (18) and sill (3), there is the first gap (27), between described spring base (16) and sill (3), lower range power sensor (17) is installed, between described base frame (1) and worktable (24), a large amount range force sensor (2) is installed.
2. a standard hardness machine that adopts 2 high-precision force sensors, comprise base frame (1), column (4), entablature (8), middle cross beam (7), pressing head seat (21), pressure head (22) and worktable (24), on described entablature (8), augmentor is installed, it is characterized in that, below described middle cross beam (7), be provided with by spring base (16), spring (14), support bar orienting sleeve (18), the limiter mechanism that support bar (19) and sill (3) form, between support bar orienting sleeve (18) and sill (3), there is the first gap (27), between described spring base (16) and sill (3), lower range power sensor (17) is installed, between between described pressure head (22) and sill (3), a large amount range force sensor (2) is installed.
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 middle cross beam (7) is a structural member, comprise a casing (7-1), on the top board of casing (7-1), there is a nut seat (7-11), on the base plate of casing (7-1) or top board, be processed with support bar mounting hole (7-8), at the base plate center of casing (7-1) processed springs seat installing blind (7-7).
4. the standard hardness machine of 2 high-precision force sensors of a kind of employing according to claim 3, is characterized in that, is installed with spring base orienting sleeve (15) in described spring base installing blind (7-7).
5. the standard hardness machine of 2 high-precision force sensors of a kind of employing according to claim 3, is characterized in that, in described nut seat (7-11) below, is provided with an oil storage pool (7-9).
6. the standard hardness machine of 2 high-precision force sensors of a kind of employing according to claim 5, is characterized in that, on the upper position higher than liquid level of described oil storage pool (7-9), is provided with vent port (7-4) and oil spilling hole (7-5).
CN201410268048.0A 2014-06-17 2014-06-17 The standard hardness machine of 2 high-precision force sensors of a kind of employing Active CN104007032B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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

Publications (2)

Publication Number Publication Date
CN104007032A true CN104007032A (en) 2014-08-27
CN104007032B CN104007032B (en) 2016-06-08

Family

ID=51367789

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410268048.0A Active CN104007032B (en) 2014-06-17 2014-06-17 The standard hardness machine of 2 high-precision force sensors of a kind of employing

Country Status (1)

Country Link
CN (1) CN104007032B (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4660667A (en) * 1985-05-15 1987-04-28 Tokyo Electric Co. Ltd. Multi-range load cell scales
CN1789962A (en) * 2004-12-16 2006-06-21 吴绍明 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
CN101660988A (en) * 2009-09-25 2010-03-03 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
CN103033428A (en) * 2012-12-13 2013-04-10 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

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4660667A (en) * 1985-05-15 1987-04-28 Tokyo Electric Co. Ltd. Multi-range load cell scales
CN1789962A (en) * 2004-12-16 2006-06-21 吴绍明 Hardness testing device
US20060130566A1 (en) * 2004-12-16 2006-06-22 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
CN101660988A (en) * 2009-09-25 2010-03-03 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
CN103033428A (en) * 2012-12-13 2013-04-10 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

Also Published As

Publication number Publication date
CN104007032B (en) 2016-06-08

Similar Documents

Publication Publication Date Title
CN100529703C (en) Six-dimension force sensor calibration device
CN103954262A (en) Device for measuring radial deformation of cylindrical test piece
CN103376192A (en) Spring detection device
CN201446459U (en) Fast tool setting gauge of machining center
CN203949656U (en) A kind of cylinder specimen radial deformation measurement mechanism
CN203929546U (en) The standard hardness machine of 2 high-precision force sensors of a kind of employing
CN203940948U (en) High-precision intelligent pressure criteria device
CN202281673U (en) Diaphragm spring pressure calibrating and measuring apparatus
CN203929494U (en) A kind of for scleroscopic power sensor limiter mechanism
CN201752853U (en) Vertical light path adjusting device for laser interferometer of NC (numerical control) machine tool
CN202145156U (en) Mechanical type rotator static balance imbalance detection device
CN201844897U (en) Digital 0.1-level tension and compression integrated standard dynamometer
CN203534767U (en) Pressure sensor calibration device
CN104634508A (en) Pressure sensor calibration device
CN104007032A (en) Standard hardness machine with two high-precision force sensors
CN103680641B (en) A kind of precisely locating platform based on compliant structure six degree of freedom
US9551639B2 (en) Device and method for measuring true triaxial creep of geotechnical engineering test block
CN104807592A (en) Electric cylinder loading overlapping type force standard machine
CN107505071A (en) Moment of friction detection means for ball screw assembly,
CN201653642U (en) Calibration device for miniature pressure sensor
CN112050744A (en) Bearing assembly height dimension detecting instrument
CN202692932U (en) Bearing direction detection device
CN105043282B (en) A kind of fiber grating shear strain sensor
CN204007580U (en) Steering column phasing degree testing agency
CN201909611U (en) Measuring device for axiality of step-hole-structure cylinder barrel

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model
CP03 "change of name, title or address"

Address after: No. 17-1 Wensu street, Hunnan District, Shenyang City, Liaoning Province

Patentee after: Shenyang Tianxing Test Instrument Co.,Ltd.

Address before: 110015 No.35, Changqing street, Shenhe District, Shenyang City, Liaoning Province

Patentee before: SHENYANG TIANXING TESTING INSTRUMENTS Co.,Ltd.

CP03 "change of name, title or address"