CN107045176A - Microhardness testers automatic lifting focusing mechanism - Google Patents
Microhardness testers automatic lifting focusing mechanism Download PDFInfo
- Publication number
- CN107045176A CN107045176A CN201710095351.9A CN201710095351A CN107045176A CN 107045176 A CN107045176 A CN 107045176A CN 201710095351 A CN201710095351 A CN 201710095351A CN 107045176 A CN107045176 A CN 107045176A
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- focusing
- lifting
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- automatic lifting
- control
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/28—Systems for automatic generation of focusing signals
- G02B7/36—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/40—Investigating hardness or rebound hardness
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- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The present invention relates to a kind of microhardness testers automatic lifting focusing mechanism, the auto-focusing for realizing microhardness testers, and due to that with clutch and rotation hand wheel, can be switched in the case of automatic mode and manual mode.Under described automatic mode, stepper motor is controlled by automatic lifting focusing controlling mechanism to realize the focusing of automatic, high precision, described manual mode is then according to actual needs, pass through the operation to clutch, allow users to be lifted by the nut of the described feed screw nut pair of the rotation hand wheel control described in control, lifted so as to regulate and control objective table, focused, the present invention has the characteristics of can voluntarily selecting manual mode and automatic mode compared to prior art, and because the automatic lifting focusing controlling mechanism in the present invention has closed loop control mechanism, by the lifting focusing for the definition control whole device that need to be focused, it is very convenient accurate.
Description
Technical field
The present invention relates to material hardness detection field, more particularly to a kind of microhardness testers are hard in metal or nonmetallic materials
The lifting focusing mechanism spent in detection process, specifically refers to a kind of microhardness testers automatic lifting focusing mechanism.
Background technology
Microhardness testers currently used in the market are typically that, using rotation adjustment handwheel, will be carried by elevating screw structure
Thing platform is adjusted to appropriate location, because the object lens magnification used in test process is generally higher, it is therefore desirable to by loading
Test specimen on platform is increased to tripping head about 0.5mm or so height, it is necessary to accurately adjust focusing handwheel to enter optical system
Row adjustment, until reach required focus effect, and easy maloperation generation test specimen and pressure head are touched in focussing process
Hit, and cause the damage of these parts, produce unnecessary loss, focussing process is not only time-consuming all by manually operating in addition
Arduously, and to different users it is difficult to reach that identical tests effect, there is nonrepeatability, often result in focus process figure
The problems such as image sharpness is inadequate, has a strong impact on the precision of hardness test.
A scheme solved the above problems is proposed in patent CN201420491713.8 in the prior art, its feature exists
In：It is fixed with fuselage inner chamber, base on column assembly, column assembly and fixes two line slide rails, line slide rail is provided with
Matching sliding block, sliding block is fixed in machine head assembly, and elevating screw seat, elevating screw seat upper end are fixed with column assembly
Hand wheel shaft is installed, lifting silk is installed in hand wheel shaft left end connection handwheel, hand wheel shaft right-hand member connection little gear, elevating screw seat lower end
Gear wheel is socketed on bar, elevating screw, gear wheel is engaged with little gear, elevating screw upper end spins screw, screw is fixed on silk
On bar connecting seat, screw mandrel connecting seat is fixed on machine head assembly rear end.Above-mentioned patent formula proposes armrest and moves adjusting screw rotation,
Realize that focus process lifts precision, and the precision of focusing can be improved to a certain extent by feed screw nut drive line slide rail.
Also there is following shortcoming in above-mentioned technology：
1st, the focusing of sample is realized using lifting automatic turret head, because microhardness testers are pressurizeed using counterweight mostly
Mode, therefore the construction of capstan head head is relative complex, to realize that the accurate of complex mechanism lifts, will certainly increase installation and adjust
The difficulty of examination process；
2nd, lifting structure described in above-mentioned patent is a kind of cantilevered fashion, therefore in the pressure process of hardness determination, can not
The deformation of stress occurs for the meeting avoided, and the microhardness testers high to required precision are clearly to meet；
3rd, focusing still is realized by the way of regulation screw mandrel manually, therefore can not avoids manually operating the image caused
Unsharp problem.
The content of the invention
The purpose of the present invention is to overcome the shortcoming of above-mentioned prior art can there is provided simpler, the focusing mode of one kind assembling
The microhardness testers automatic lifting focusing mechanism of selection.
To achieve these goals, microhardness testers automatic lifting focusing mechanism of the invention is specific as follows：
The microhardness testers automatic lifting focusing mechanism, it is mainly characterized by, and described device includes built-in automatic liter
Drop focusing controlling mechanism and a lifting Focusing mechanism, wherein described automatic lifting focusing controlling mechanism is in automatic mode
Control drive mechanism automatically adjusts to described lifting Focusing mechanism, so as to realize the automatic lifting focusing of the device, institute
The device stated is additionally provided with user under manual mode, described manual mode and described lifting is controlled by a manual overvide
Focusing mechanism, so that the hand-operated lifting focusing of the device is realized, and described manual mode and automatic mode can pass through a clutch
Device is switched over.
It is preferred that described lifting Focusing mechanism includes secondary synchronous pulley group, turbine and worm, feed screw nut pair and loading
Platform, wherein described objective table is arranged on described feed screw nut pair, the lift band of nut in described feed screw nut pair
Move the lifting of described objective table, and described device passes through the silk described in described driving mechanisms control when being in automatic mode
The lifting of nut in stem nut pair, described device is realized to institute when being in manual mode by described manual overvide
The manual control for the lifting Focusing mechanism stated, so that the lifting of the nut in described feed screw nut pair is controlled, and described hand
Dynamic control device is a rotation hand wheel.
More preferably, described objective table can carry the objective table of the two-dimentional testing stands of X-Y for one, and described feed screw nut pair is
Gapless feed screw nut pair between screw mandrel and nut.
More preferably, described synchronous pulley group includes the first synchronous pulley and the second synchronous pulley, and described first is same
It is tensioned between step belt wheel and the second synchronous pulley by a strainer, and described drive mechanism and described driving machine
Transmission between structure and feed screw nut pair passes through handwheel axle sleeve and the secondary mating connection of turbine and worm to realize, and described handwheel
Axle sleeve is fixedly mounted on the first described synchronous pulley, and the transmission between described rotation hand wheel and feed screw nut pair passes through hand
The secondary mating connection of axle sleeve and turbine and worm is to realize.
It is particularly preferred that described drive mechanism is stepper motor, described stepper motor passes through motor shaft sleeve, deep groove ball bearing
It is fixed on round nut on described strainer, and described motor shaft sleeve is fixedly mounted on the second described synchronous pulley
On.
It is particularly preferred that described clutch is a slipping toothed electromagnetic clutch, and described slipping toothed electromagnetic clutch passes through
Deep groove ball bearing and circlip for hole are arranged on the first described synchronous pulley, and the adhesive of the slipping toothed electromagnetic clutch
The current operator scheme of Determines.
It is preferred that described automatic lifting focusing controlling mechanism includes a closed loop control mechanism, and the closed-loop control machine
The definition for making the image that need to be focused is believed as feedback parameters, and according to the described corresponding control of feedback parameters acquisition
Breath, described drive device is controlled by described control information, so as to control described lifting Focusing mechanism, the device is realized
Auto-focusing.
Using the microhardness testers automatic lifting focusing mechanism in the present invention, controlled due to wherein having automatic lifting to focus
Mechanism, and with drive mechanism and rotation hand wheel, therefore the present invention has two kinds of operator schemes, one kind is according to automatic lifting
Controlling mechanism of focusing carries out the automatic mode of automatic lifting focusing control, and another is to need voluntarily to adjust according to user to be risen
The manual mode of focusing is dropped, and switching is realized by a slipping toothed electromagnetic clutch between automatic mode and manual mode, very
It is simple and convenient.Automatic lifting focusing controlling mechanism in described microhardness testers automatic lifting focusing mechanism includes a closed loop
Controlling mechanism, and the definition of image of the closed loop control mechanism that need to be focused carry out as feedback parameters to the device
Elevating control, whole control process is very simple accurate, and the control accuracy of whole device can be according to feed screw nut pair therein
Precision and the precision of stepper motor be controlled adjustment, user can carry out entering one to control accuracy according to actual conditions
Step selection.
Device in the present invention has the following advantages that：
1st, by the way of automatically focusing, corresponding automatic lifting focusing controlling mechanism is coordinated, it is clear using objective lens
The mode of clear degree realizes the Closed loop Control to precision stepper motor, and precision is high, and stability is strong, is suitable for different-thickness and not
The material hardness detection of same type；
2nd, still retain the rotation hand wheel device of manual focusing, the switching of automatic/hand pattern realized by clutch apparatus,
To meet the use requirement under different situations；
3rd, the lifting of objective table is the rotation that feed screw nut pair is driven using high-accuracy worm couple, passes through screw mandrel spiral shell
Female pair realizes the lifting of objective table, and the two-dimentional testing stands of X-Y can be connected on objective table.
Brief description of the drawings
Fig. 1 is the structural representation of the microhardness testers automatic lifting focusing mechanism of the present invention.
Fig. 2 is the schematic three dimensional views of the microhardness testers automatic lifting focusing mechanism of the present invention.
Reference
1 stepper motor
2 synchronous pulley groups
3 slipping toothed electromagnetic clutch
4 rotation hand wheels
5 turbine and worm pairs
6 feed screw nut pairs
7 X-Y two dimension testing stands
8 strainers
9 motor shaft sleeves
10 round nuts
11 circlip for holes
12 deep groove ball bearings
13 handwheel axle sleeves
Embodiment
In order to more clearly describe the technology contents of the present invention, carried out with reference to specific embodiment further
Description.
The microhardness testers automatic lifting focusing mechanism, including built-in automatic lifting focusing controlling mechanism and a lifting pair
Focusing mechanism, wherein described automatic lifting focusing controlling mechanism to control drive mechanism to described lifting in automatic mode
Focusing mechanism automatically adjusts, so as to realize the automatic lifting focusing of the device, described device is additionally provided with manual mode,
User controls described lifting Focusing mechanism by a manual overvide under described manual mode, so as to realize the device
Hand-operated lifting is focused, and described manual mode and automatic mode can be switched over by a clutch.
Described lifting Focusing mechanism includes secondary synchronous pulley group, turbine and worm, feed screw nut pair and objective table, wherein institute
The objective table stated is arranged on described feed screw nut pair, as the load described in the lifting of nut in described feed screw nut pair drives
The lifting of thing platform, and described device when being in automatic mode by the feed screw nut pair described in described driving mechanisms control
Nut lifting, described device realized to described lifting pair when being in manual mode by described manual overvide
The manual control of focusing mechanism, so that the lifting of the nut in described feed screw nut pair is controlled, and described manual overvide
For a rotation hand wheel.
Described objective table is that one can carry the objective table of the two-dimentional testing stands of X-Y, described feed screw nut pair for screw mandrel with
Gapless feed screw nut pair between nut.
Described synchronous pulley group includes the first synchronous pulley and the second synchronous pulley, and described the first synchronous pulley and
It is tensioned between second synchronous pulley by a strainer, and described drive mechanism and described drive mechanism and screw mandrel
Transmission between pair of nut passes through handwheel axle sleeve and the secondary mating connection of turbine and worm to realize, and described handwheel axle sleeve is fixed
On the first described synchronous pulley, transmission between described rotation hand wheel and feed screw nut pair by handwheel axle sleeve and
The secondary mating connection of turbine and worm is to realize.
Described drive mechanism is stepper motor, and described stepper motor passes through motor shaft sleeve, deep groove ball bearing and circle spiral shell
Mother is fixed on described strainer, and described motor shaft sleeve is fixedly mounted on the second described synchronous pulley.
Described clutch is a slipping toothed electromagnetic clutch, and described slipping toothed electromagnetic clutch passes through deep-groove ball axle
Hold and be arranged on circlip for hole on the first described synchronous pulley, and the attracting state of the slipping toothed electromagnetic clutch is determined
Current operator scheme.
Described automatic lifting focusing controlling mechanism includes a closed loop control mechanism, and the closed loop control mechanism is need to enter
The definition of the image of row focusing obtains corresponding control information as feedback parameters, and according to described feedback parameters, by described
The described drive device of control information control, so as to control described lifting Focusing mechanism, realize the auto-focusing of the device.
In a kind of specific embodiment, the device includes high-precision stepper motor 1, synchronous pulley group 2, castellated electromagnetism
Clutch 3, high-precision worm and gear, gapless screw pair, rotation hand wheel 4 and the two-dimentional testing stands 7 of X-Y can be installed
Objective table.High-precision stepper motor 1 is accurately controlled by control software, i.e., described automatic lifting focusing controlling mechanism,
And automatic lifting focusing controlling mechanism carries out feedback regulation according to the measurement signal of the definition of object lens, realizes high-precision close
Ring is controlled；Stepper motor 1 is driven with worm shaft by synchronous pulley group 2, and transmission is eliminated by special timing belt strainer 8
Gap；Retain the axle of rotation hand wheel 4, slipping toothed electromagnetic clutch 3 is provided with the rotary shaft of rotation hand wheel 4, and by the dental inlay
The switching of manual mode and automatic mode is realized in adhesive, the disconnection of formula electromagnetic clutch 3；The lifting of objective table is using unique nothing
The transmission of gap feed screw nut pair 6 realizes to meet the required precision needed for microhardness testers hardness determination, and above structure is had
The combination of effect, realizes full automatic lifting focusing scheme.
Referring to Fig. 1, stepper motor 1 is fixed on and can facilitated by motor shaft sleeve 9 and deep groove ball bearing 12 and round nut 10
Realize in the mechanism that synchronous pulley group 2 is tensioned.First synchronous pulley and the second timing belt are separately mounted to handwheel axle sleeve 13 and electricity
On arbor set 9, slipping toothed electromagnetic clutch 3 is arranged on the first synchronous pulley by deep groove ball bearing 12 and circlip for hole 11
On, slipping toothed electromagnetic clutch 3 is inhaled and can realize the switching of automatic mode and manual mode with separating.Handwheel axle sleeve 13 and snail
Worm couple is connected, and the rotary motion of stepper motor 1 or rotation hand wheel 4 is delivered on gapless screw pair,
Lifting by nut drives the two-dimentional testing stands 7 of the X-Y for being provided with test specimen to rise or fall, so as to realize the lifting focusing of sample.
During work, manual mode and automatic mode can be selected by an operation interface, the operation interface is also based on described
Automatic lifting focusing controlling mechanism, is the interactive interface between a kind of user and device.Described manual mode and automatic mode
Both switchings lean on the adhesive of slipping toothed electromagnetic clutch 3, disconnect realizing：, should when the slipping toothed electromagnetic clutch 3 is separated
Device is in automatic mode, and stepper motor 1 transmits rotary movement to worm gear by the first synchronous pulley and the second synchronous pulley
Worm gear pair 5, so as to realize auto-focusing, and realizes closed-loop control as feedback signal according to the definition of image, can compensate for fortune
Error during dynamic, realizes accurate control；When 3 adhesive of slipping toothed electromagnetic clutch, described device is in manual mould
Formula, stepper motor and the first synchronous pulley and the second synchronous pulley depart from handwheel axle sleeve to be driven, straight by described handwheel axle sleeve
Connect described turbine and worm pair 5 in succession to be driven, the focusing of whole device is carried out manually.
In a particular embodiment, described automatic lifting focusing controlling mechanism, and the closed loop control mechanism is need to carry out pair
The definition of burnt image obtains the measurement signal of pixel resolution as feedback parameters, automatic lifting focusing controlling mechanism,
And the theoretic high picture set in the measurement signal of the pixel resolution obtained and automatic lifting focusing controlling mechanism
Plain picture signal is made comparisons, and by the driver of comparative result data feedback to stepper motor, arteries and veins is sent by described driver
Signal is rushed, the rotation amount of stepper motor 1 is adjusted, the rotation amount of stepper motor 1 directly affects the motion of turbine and worm pair 5, so that
The motion of feed screw nut pair 6 is influenceed, therefore, it is possible to realize automatic focusing, until being adjusted to image definition reaches required effect
Really.
Using the microhardness testers automatic lifting focusing mechanism in the present invention, controlled due to wherein having automatic lifting to focus
Mechanism, and with drive mechanism and rotation hand wheel 4, therefore the present invention has two kinds of operator schemes, one kind is according to automatic lifting
Controlling mechanism of focusing carries out the automatic mode of automatic lifting focusing control, and one kind needs voluntarily to adjust and risen according to user
The manual mode of focusing is dropped, and switching is realized by a slipping toothed electromagnetic clutch 3 between automatic mode and manual mode, very
It is simple and convenient.Automatic lifting focusing controlling mechanism in described microhardness testers automatic lifting focusing mechanism includes a closed loop
Controlling mechanism, and the definition of image of the closed loop control mechanism that need to be focused carry out as feedback parameters to the device
Elevating control, whole control process is very simple accurate, and the control accuracy of whole device can be according to feed screw nut pair 6 therein
Precision and the precision of stepper motor 1 be controlled, user can be carried out to the further of control accuracy according to actual conditions
Selection.
Device in the present invention has the following advantages that：
1st, by the way of automatically focusing, the control software of my company's research and development is coordinated, using objective lens definition
Mode realizes the Closed loop Control to precision stepper motor 1, and precision is high, and stability is strong, is suitable for different-thickness and inhomogeneity
The material hardness detection of type；
2nd, the device of rotation hand wheel 4 of manual focusing is still retained, clutch apparatus realizes the switching of automatic/hand, with full
Use requirement under sufficient different situations；
3rd, the lifting of objective table is the rotation that feed screw nut pair 6 is driven using high-accuracy worm couple, passes through screw mandrel
Pair of nut 6 realizes the lifting of objective table, and the two-dimentional testing stands 7 of X-Y can be connected on objective table.
In this description, the present invention is described with reference to its specific embodiment.But it is clear that can still make
Various modifications and alterations are without departing from the spirit and scope of the present invention.Therefore, specification and drawings are considered as illustrative
And it is nonrestrictive.
Claims (7)
1. a kind of microhardness testers automatic lifting focusing mechanism, it is characterised in that described device includes built-in automatic lifting
Controlling mechanism of focusing and a lifting Focusing mechanism, wherein described automatic lifting focusing controlling mechanism to control in automatic mode
Drive mechanism processed automatically adjusts to described lifting Focusing mechanism, so that the automatic lifting focusing of the device is realized, it is described
Device be additionally provided with user under manual mode, described manual mode and pass through the described lifting pair of manual overvide control
Focusing mechanism, so that the hand-operated lifting focusing of the device is realized, and described manual mode and automatic mode can pass through a clutch
Switch over.
2. microhardness testers automatic lifting focusing mechanism according to claim 1, it is characterised in that described lifting focusing
Mechanism includes secondary synchronous pulley group, turbine and worm, feed screw nut pair and objective table, wherein described objective table is arranged on described
On feed screw nut pair, as the lifting of the objective table described in the lifting of nut in described feed screw nut pair drives, and described dress
Put the lifting by the nut in the feed screw nut pair described in described driving mechanisms control, described dress during in automatic mode
The manual control by described manual overvide realization to described lifting Focusing mechanism during in manual mode is put, so that
The lifting of nut in the described feed screw nut pair of control, and described manual overvide is a rotation hand wheel.
3. microhardness testers automatic lifting focusing mechanism according to claim 2, it is characterised in that described objective table is
One can carry the objective table of the two-dimentional testing stands of X-Y, and described feed screw nut pair is gapless screw mandrel spiral shell between screw mandrel and nut
It is female secondary.
4. microhardness testers automatic lifting focusing mechanism according to claim 2, it is characterised in that described synchronous pulley
Group includes passing through one between the first synchronous pulley and the second synchronous pulley, and the first described synchronous pulley and the second synchronous pulley
Strainer is tensioned, and the described drive mechanism and transmission between described drive mechanism and feed screw nut pair passes through hand
Axle sleeve and the secondary mating connection of turbine and worm are to realize, and described handwheel axle sleeve is fixedly mounted on the first described timing belt
On wheel, transmission between described rotation hand wheel and feed screw nut pair by the secondary mating connection of handwheel axle sleeve and turbine and worm with
Realize.
5. microhardness testers automatic lifting focusing mechanism according to claim 4, it is characterised in that described drive mechanism
For stepper motor, described stepper motor is fixed on described strainer by motor shaft sleeve, deep groove ball bearing and round nut
On, and described motor shaft sleeve is fixedly mounted on the second described synchronous pulley.
6. microhardness testers automatic lifting focusing mechanism according to claim 4, it is characterised in that described clutch is
One slipping toothed electromagnetic clutch, and described slipping toothed electromagnetic clutch is arranged on by deep groove ball bearing and circlip for hole
On the first described synchronous pulley, and the attracting state of the slipping toothed electromagnetic clutch determines current operator scheme.
7. microhardness testers automatic lifting focusing mechanism according to claim 1, it is characterised in that described automatic lifting
Focusing controlling mechanism includes a closed loop control mechanism, and the closed loop control mechanism is made with the definition for the image that need to be focused
For feedback parameters, and corresponding control information is obtained according to described feedback parameters, described drive is controlled by described control information
Dynamic device, so as to control described lifting Focusing mechanism, realizes the auto-focusing of the device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710095351.9A CN107045176A (en) | 2017-02-22 | 2017-02-22 | Microhardness testers automatic lifting focusing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710095351.9A CN107045176A (en) | 2017-02-22 | 2017-02-22 | Microhardness testers automatic lifting focusing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107045176A true CN107045176A (en) | 2017-08-15 |
Family
ID=59544489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710095351.9A Pending CN107045176A (en) | 2017-02-22 | 2017-02-22 | Microhardness testers automatic lifting focusing mechanism |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108445032A (en) * | 2018-03-12 | 2018-08-24 | 上海环钻环保科技股份有限公司 | A kind of heavy metal-polluted soil detection device for space enrironment investigation |
| CN109342179A (en) * | 2018-12-13 | 2019-02-15 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of standard microhardness testers |
| CN109471253A (en) * | 2018-12-13 | 2019-03-15 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of autofocus system of microhardness testers |
| CN110006768A (en) * | 2019-04-24 | 2019-07-12 | 莱州市蔚仪试验器械制造有限公司 | A kind of touch screen digital display Rockwell apparatus |
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| CN204924774U (en) * | 2015-08-04 | 2015-12-30 | 上海尚材试验机有限公司 | A escalator constructs for sclerometer |
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| JP2011220790A (en) * | 2010-04-08 | 2011-11-04 | Mitsutoyo Corp | Hardness testing machine and hardness testing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108445032A (en) * | 2018-03-12 | 2018-08-24 | 上海环钻环保科技股份有限公司 | A kind of heavy metal-polluted soil detection device for space enrironment investigation |
| CN109342179A (en) * | 2018-12-13 | 2019-02-15 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of standard microhardness testers |
| CN109471253A (en) * | 2018-12-13 | 2019-03-15 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of autofocus system of microhardness testers |
| CN109471253B (en) * | 2018-12-13 | 2021-02-26 | 中国航空工业集团公司北京长城计量测试技术研究所 | Automatic focusing system of microhardometer |
| CN109342179B (en) * | 2018-12-13 | 2021-04-06 | 中国航空工业集团公司北京长城计量测试技术研究所 | Standard microhardness tester |
| CN110006768A (en) * | 2019-04-24 | 2019-07-12 | 莱州市蔚仪试验器械制造有限公司 | A kind of touch screen digital display Rockwell apparatus |
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Application publication date: 20170815 |