CN107796275A - A kind of flexible display screen torsion characteristic measurement apparatus - Google Patents
A kind of flexible display screen torsion characteristic measurement apparatus Download PDFInfo
- Publication number
- CN107796275A CN107796275A CN201711117618.6A CN201711117618A CN107796275A CN 107796275 A CN107796275 A CN 107796275A CN 201711117618 A CN201711117618 A CN 201711117618A CN 107796275 A CN107796275 A CN 107796275A
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- Prior art keywords
- dial gauge
- fixed
- display screen
- flexible display
- seat
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention discloses a kind of flexible display screen torsion characteristic measurement apparatus, frame is fixedly installed on the upper surface of fixed seat, the upper surface of frame is provided with line slideway, sliding block is slidably arranged in line slideway, upper end of slide block face is fixedly installed slide, slide is fixedly connected with oil cylinder and by hydraulic oil cylinder driving so that slide slides in frame along line slideway；Rotary support is fixed on the upper surface of slide, the upper surface of rotary support is fixed with pinion stand, gear is fixed on pinion stand, motor is arranged on inside pinion stand, motor is connected with pinion stand, upper fixture seat, lower clamp seat, upper clamping ring, lower clamping ring, clamping bar, clutch shaft bearing chamber, clutch shaft bearing, second bearing chamber, second bearing are provided with rotating shaft, location-plate is fixed with clamping bar, flexible display screen is fixed with location-plate.The present invention can quickly be accurately detected the torsion resistance of flexible display screen, improve efficiency and accuracy rate.
Description
Technical field
Of the invention and a kind of flexible display screen torsion characteristic measurement apparatus.
Background technology
At present, flexible LED display screen can be folded easily, small volume, in light weight, convenience in transport and installation, and
And the surfacing of screen body, the luminous uniformity of each LED is good, and image frame is uniform, has obtained extensive utilization.It is general soft
The detection method of property LED display torsion resistance, is all to close up two flake products to be compared by hand, and detection efficiency is low, and
Torsion resistance numerical value can not be quantified, accuracy is also extremely low.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of flexible display screen torsion characteristic measurement apparatus.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
A kind of flexible display screen torsion characteristic measurement apparatus, it is characterised in that：Frame is fixedly installed on the upper end of fixed seat
Face, the upper surface of frame are provided with line slideway, and sliding block is slidably arranged in line slideway, and upper end of slide block face is fixedly installed cunning
Seat, across in frame, slide is fixedly connected and by hydraulic oil cylinder driving slide with oil cylinder so that slide is in frame along line slideway
Slide；Bolt hole is provided with the upper surface of slide, rotary support is bolted on the upper surface of slide, rotary support
Upper surface be fixed with pinion stand, the inside of pinion stand is hollow structure, and gear is fixed on pinion stand, and motor is arranged on gear
Seat is internal, and motor is connected with pinion stand, rotated by motor-driven gear seat, and so as to the rotation of drive gear, gear is consolidated with rotating shaft
Fixed connection, and the rotation of the rotation drive shaft by gear, upper fixture seat, lower clamp seat, upper clamping ring, lower folder are provided with rotating shaft
Circle, clamping bar, clutch shaft bearing chamber, clutch shaft bearing, second bearing chamber, second bearing, are fixed with location-plate on clamping bar, solid on location-plate
Fixed flexible display screen, the torsion resistance of flexible display screen are measured by the first dial gauge and the second dial gauge.
Further, upper fixture seat fixes the outer ring surface for being set in rotating shaft, and lower clamp seat fixes the outer shroud for being set in rotating shaft
Face, clamping ring and lower clamping ring are fixed between upper fixture seat and lower clamp seat, clamping bar is fixed between upper clamping ring and lower clamping ring, on
The upper surface of the lower surface fitting clamping bar of clamping ring, the lower surface of the upper surface fitting clamping bar of lower clamping ring；Upper fixture seat and rotating shaft
There is clutch shaft bearing chamber, clutch shaft bearing chamber is arranged on the top of clamping ring, and clutch shaft bearing is fixedly installed on first axle between outer wall
Intracavitary is held, there is second bearing chamber between lower clamp seat and the outer wall of rotating shaft, second bearing chamber is arranged on the top of lower clamping ring, the
Two bearings are fixedly installed on second bearing intracavitary, and sealing ring is set in the lateral surface of rotating shaft, and sealing ring is arranged on clamping ring and folder
Between bar, the lower surface of sealing ring and the upper surface of lower clamping ring fit.
Further, the end of the clamping bar is fixed with positioning seat, and the passage passed through for guide rod is provided with positioning seat,
Guide rod is arranged in passage and moved up and down along positioning seat, and location-plate is machined with endoporus, and the upper end of guide rod, which is fixed on, determines
In the endoporus of position plate, guide rod is coaxially disposed and is fixedly connected with adjusting screw rod, and adjusting guide rod by adjusting screw rod is positioning
Height in seat.
Further, the quantity of the guide rod is at least 3.
Further, the location-plate fixes flexible display screen, and the side of frame is fixedly installed montant, consolidates on montant
Surely there are the first dial gauge and the second dial gauge, the first dial gauge and the second dial gauge are horizontally disposed with, the first dial gauge and the 200th
Table is divided to be spaced a distance, the centerline of center line and location-plate between the first dial gauge and the second dial gauge is in same
On horizontal line, electrical contact one is provided with the first dial gauge, the second dial gauge is provided with electrical contact two, the first dial gauge
The electrical contact two of the dial gauge of electrical contact one and second extends to direction where location-plate, the electrical contact one of the first dial gauge
Same end face that is close with the electrical contact two of the second dial gauge and being fitted in tested flexible display screen, by being horizontally installed on machine
The torsion resistance of the first dial gauge and the second dial gauge measurement flexible display screen on frame.
Further, when montant of the flexible display screen by side, the electrical contact one and the 200th of the first dial gauge
Divide and second point of the tested flexible display screen of the fitting of electrical contact two of table at first point, observe and record what is shown on the first dial gauge
Number, obtains the first measured value；The number shown on the second dial gauge is observed and recorded, obtains the second measured value, the first measured value and
The torsion resistance that the absolute value of the difference of two measured values is.
Further, the bottom of the slide is provided with a piston company for extending the ear mount stretched out, ear mount and oil cylinder downwards
Connect, oil cylinder laterally sets and is fixed in frame.
Further, it is provided with pad on the inside of the location-plate.
Beneficial effects of the present invention：The present invention along housing slide, is fixed with rotary support, rotation branch using slide on slide
Seat is rotated, the rotation of the rotation drive shaft of gear 7, in rotating shaft by the cooperation of pinion stand and gear by motor-driven gear 7
Upper fixture seat and lower clamp seat are provided with, clamping ring and lower clamping ring, rotating shaft driving are fixed between upper fixture seat and lower clamp seat
Clamping bar between upper clamping ring and lower clamping ring rotates, and clamping bar is flexible by positioning seat and guide rod, and passes through adjusting screw rod, regulation
Position height of the location-plate on clamping bar, flexible display screen is fixed with location-plate, by flexible display screen from the perpendicular of frame side
Bar by when, the first dial gauge and the second dial gauge on montant are measured flexible display screen, and the present invention can form detection life
Producing line, the torsion resistance of flexible display screen can be gone out with quick detection, significantly raising efficiency, and can carries out reading and amount to torsion resistance
Change, improve accuracy rate.
Brief description of the drawings
In order to more clearly illustrate the technical scheme in the embodiment of the present invention, will use below required in embodiment
Accompanying drawing is simply introduced, it should be apparent that, drawings in the following description are only some embodiments described in the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of clamping bar.
Fig. 3 is the structural representation of flexible display screen measurement.
In figure：1- fixed seats, 2- frames, 3- slides, 301- ear mounts, 4- oil cylinders, 401- pistons, 5- rotary supports, 6- teeth
Clamping ring, 13- clamping bars, 14- first under wheel seat, 7- gears, 8- rotating shafts, 9- upper fixtures seat, 10- lower clamps seat, the upper clamping rings of 11-, 12-
Bearing bore, 15- clutch shaft bearings, 16- second bearings chamber, 17- second bearings, 18- sealing rings, 19- positioning seats, 20- guide rods,
21- location-plates, 22- adjusting screw rods, 23- flexible display screens, 24- montants, the dial gauges of 25- first, the dial gauges of 26- second, 27- electricity
Sub- contact one, 28- electrical contacts two, first point of 29-, 30- second points.
Embodiment
Technical scheme will be clearly and completely described by embodiment below.
A kind of flexible display screen torsion characteristic measurement apparatus, including fixed seat 1, frame 2, slide 3, ear mount 301, oil cylinder 4,
Piston 401, rotary support 5, pinion stand 6, gear 7, rotating shaft 8, upper fixture seat 9, lower clamp seat 10, upper clamping ring 11, lower clamping ring 12,
Clamping bar 13, clutch shaft bearing chamber 14, clutch shaft bearing 15, second bearing chamber 16, second bearing 17, sealing ring 18, positioning seat 19, guiding
Bar 20, location-plate 21, adjusting screw rod 22, flexible display screen 23, montant 24, the first dial gauge 25, the second dial gauge 26, electronics touch
First 27, electrical contact 2 28, first: 29 and second point 30.
As shown in figure 1, frame 2 is fixedly installed on the upper surface of fixed seat 1, fixed seat 1 plays a supportive role to frame 2, machine
The upper surface of frame 2 is provided with line slideway, and sliding block is slidably arranged in line slideway, and upper end of slide block face is fixedly installed slide 3,
Across in frame 2, the bottom of slide 3 is provided with one and extends the ear mount 301 stretched out, ear mount 301 and oil cylinder 4 downwards slide 3
Piston 401 connects, and oil cylinder 4 laterally sets and is fixed in frame 2, slide 3 is moved on line slideway by oil cylinder 4.
Bolt hole is provided with the upper surface of slide 3, rotary support 5 is bolted on the upper surface of slide 3, rotation
The upper surface for turning bearing 5 is fixed with pinion stand 6, and the inside of pinion stand 6 is hollow structure, and gear 7 is fixed on pinion stand 6, electricity
Machine is provided in inside pinion stand 6, and motor is connected with pinion stand 6, by the rotation of motor-driven gear seat 6, so as to drive gear 7
Rotation.Gear 7 is fixedly connected with rotating shaft 8, the rotation of the rotation drive shaft 8 of gear 7.
Upper fixture seat 9 fixes the outer ring surface for being set in rotating shaft 8, and lower clamp seat 10 fixes the outer ring surface for being set in rotating shaft 8, on
Clamping ring 11 and lower clamping ring 12 are fixed between clamping fixture seat 9 and lower clamp seat 10, is fixed between upper clamping ring 11 and lower clamping ring 12
Clamping bar 13, the upper surface of the lower surface fitting clamping bar 13 of upper clamping ring 11, the lower surface of the upper surface fitting clamping bar 13 of lower clamping ring 12,
Upper clamping ring 11 coordinates to step up clamping bar 13 with lower clamping ring 12.
There is clutch shaft bearing chamber 14, clutch shaft bearing chamber 14 is arranged on clamping ring 11 between upper fixture seat 9 and the outer wall of rotating shaft 8
Top, clutch shaft bearing 15 is fixedly installed in clutch shaft bearing chamber 14, has second between lower clamp seat 10 and the outer wall of rotating shaft
Bearing bore 16, second bearing chamber 16 are arranged on the top of lower clamping ring 12, and second bearing 17 is fixedly installed in second bearing chamber 16.
Clutch shaft bearing 15 and second bearing 17 can be such that the clamping bar 13 between clamping ring 11 and lower clamping ring 12 8 rotates around the shaft.
Sealing ring 18 is set in the lateral surface of rotating shaft 8, and sealing ring 18 is arranged between clamping ring 11 and clamping bar, sealing ring 18
Lower surface and the upper surface of lower clamping ring 12 fit.
As shown in Fig. 2 the end of clamping bar 13 is fixed with positioning seat 19, it is provided with what is passed through for guide rod 20 in positioning seat 19
Passage, guide rod 20 are arranged in passage and moved up and down along positioning seat 19, and location-plate 21 is machined with endoporus, guide rod 20
Upper end is fixed in the endoporus of location-plate 21, and endoporus is combined into interference fits or small―gap suture cooperation with matching somebody with somebody for guide rod 20, by interior
The cooperation of hole and guide rod 20 is positioned.Guide rod 20 is coaxially disposed and is fixedly connected with adjusting screw rod 22, passes through regulation
Screw rod 22 adjusts height of the guide rod 20 in positioning seat 19, and then adjusts the height of location-plate 21.The quantity of guide rod 20 is extremely
It is less 3, location-plate 21 is more easily adjusted by multiple guide rods 20.
As shown in figure 3, location-plate 21 fixes flexible display screen 23, the inner side of location-plate 21 is provided with pad, to protect
Shield flexible display screen is not scratched.The side of frame 2 is fixedly installed montant 24, and the He of the first dial gauge 25 is fixed with montant 24
Second dial gauge 26, the first dial gauge 25 and the second dial gauge 26 are horizontally disposed, between the first dial gauge 25 and the second dial gauge 26
The centerline of center line between a certain distance, the first dial gauge 25 and the second dial gauge 26 and location-plate 21 is in same
On horizontal line, where the electrical contact 2 28 to location-plate 21 of the dial gauge 26 of electrical contact one 27 and second of the first dial gauge 25
Direction extends.The torsion of flexible display screen is measured by the first dial gauge 25 being horizontally installed in frame 2 and the second dial gauge 26
Curvature.
Slided by slide 3 along line slide rail in frame 2, rotating shaft 8 is slided along line slide rail, passes through the rotation of gear 7
The rotation of drive shaft 8, and then location-plate 21 is along axis of rotation.When montant 24 of the flexible display screen 23 by side, first
The branch of electrical contact 2 28 of the dial gauge 26 of electrical contact one 27 and second of dial gauge 25 is close to tested flexible display screen 23
1: 29 measures with second point 30, the electrical contact 1 of the first dial gauge 25 at 1: 29, observes and records the 100th
Divide on table 25 number shown, obtain the first measured value；The electrical contact 2 28 of second dial gauge 26 measures at second point 30, sees
Examine the number that shows on the second dial gauge 26 of record, obtain the second measured value, the difference of the first measured value and the second measured value it is exhausted
The torsion resistance for being to value.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the design of the present invention
It is defined with scope, on the premise of design concept of the present invention is not departed from, ordinary skill technical staff is to this hair in this area
The all variations and modifications that bright technical scheme is made all should fall into protection scope of the present invention, claimed skill of the invention
Art content, all it is documented in technical requirements book.
Claims (8)
- A kind of 1. flexible display screen torsion characteristic measurement apparatus, it is characterised in that：Frame (2) is fixedly installed on fixed seat (1) Upper surface, the upper surface of frame (2) are provided with line slideway, and sliding block is slidably arranged in line slideway, and upper end of slide block face is fixed Slide (3) is provided with, across in frame (2), slide (3) is fixedly connected and driven by oil cylinder (4) slide (3) with oil cylinder (4), So that slide (3) slides in frame (2) along line slideway；Bolt hole, rotary support are provided with the upper surface of slide (3) (5) it is bolted on the upper surface of slide (3), the upper surface of rotary support (5) is fixed with pinion stand (6), pinion stand (6) inside is hollow structure, and gear (7) is fixed on pinion stand (6), and motor is arranged on pinion stand (6) inside, motor and tooth Wheel seat (6) connects, and is rotated by motor-driven gear seat (6), so as to which the rotation of drive gear (7), gear (7) are solid with rotating shaft (8) Fixed connection, and the rotation of the rotation drive shaft (8) by gear (7), upper fixture seat (9), lower clamp seat are provided with rotating shaft (8) (10), upper clamping ring (11), lower clamping ring (12), clamping bar (13), clutch shaft bearing chamber (14), clutch shaft bearing (15), second bearing chamber (16), second bearing (17), location-plate (21) are fixed with clamping bar (13), location-plate is fixed with flexible display screen on (21) (23), the torsion resistance of flexible display screen (23) is measured by the first dial gauge (25) and the second dial gauge (26).
- A kind of 2. flexible display screen torsion characteristic measurement apparatus according to claim 1, it is characterised in that：Upper fixture seat (9) the fixed outer ring surface for being set in rotating shaft (8), the fixed outer ring surface for being set in rotating shaft (8) of lower clamp seat (10), upper fixture seat (9) clamping ring (11) and lower clamping ring (12) are fixed between lower clamp seat (10), between upper clamping ring (11) and lower clamping ring (12) It is fixed with clamping bar (13), the upper surface of the lower surface fitting clamping bar (13) of upper clamping ring (11), the upper surface fitting of lower clamping ring (12) The lower surface of clamping bar (13)；There is clutch shaft bearing chamber (14), clutch shaft bearing chamber between upper fixture seat (9) and the outer wall of rotating shaft (8) (14) top of clamping ring (11) is arranged on, clutch shaft bearing (15) is fixedly installed in clutch shaft bearing chamber (14), lower clamp seat (10) there is second bearing chamber (16) between the outer wall of rotating shaft (8), second bearing chamber (16) is arranged on the upper of lower clamping ring (12) Side, second bearing (17) are fixedly installed in second bearing chamber (16), and sealing ring (18) is set in the lateral surface of rotating shaft (8), close Seal (18) is arranged between clamping ring (11) and clamping bar (13), the lower surface of sealing ring (18) and the upper surface of lower clamping ring (12) Fit.
- A kind of 3. flexible display screen torsion characteristic measurement apparatus according to claim 2, it is characterised in that：The clamping bar (13) end is fixed with positioning seat (19), and the passage passed through for guide rod (20), guide rod are provided with positioning seat (19) (20) be arranged in passage and moved up and down along positioning seat (19), location-plate (21) is machined with endoporus, guide rod (20) it is upper End is fixed in the endoporus of location-plate (21), and guide rod (20) is coaxially disposed and is fixedly connected with adjusting screw rod (22), passes through tune Save height of screw rod (22) the regulation guide rod (20) in positioning seat (19).
- A kind of 4. flexible display screen torsion characteristic measurement apparatus according to claim 3, it is characterised in that：The guide rod (20) quantity is at least 3.
- A kind of 5. flexible display screen torsion characteristic measurement apparatus according to claim 1, it is characterised in that：The location-plate (21) flexible display screen (23) is fixed, the side of frame (2) is fixedly installed montant (24), and montant is fixed with first on (24) Dial gauge (25) and the second dial gauge (26), the first dial gauge (25) and the second dial gauge (26) are horizontally disposed, the first dial gauge (25) it is spaced a distance with the second dial gauge (26), the center line between the first dial gauge (25) and the second dial gauge (26) Centerline with location-plate (21) is in same horizontal line, being provided with electrical contact one (27) on the first dial gauge (25), and Two dial gauges (26) are provided with electrical contact two (28), electrical contact one (27) and the second dial gauge of the first dial gauge (25) (26) electrical contact two (28) extends to direction where location-plate (21), the electrical contact one (27) of the first dial gauge (25) and The electrical contact two (28) of second dial gauge (26) is close and is fitted in the same end face of tested flexible display screen (23), passes through horizontal stroke To the torsion resistance for the first dial gauge (25) and the second dial gauge (26) the measurement flexible display screen being arranged in frame (2).
- A kind of 6. flexible display screen torsion characteristic measurement apparatus according to claim 5, it is characterised in that：Work as Flexible Displays When shielding (23) by montant (24) of side, the electrical contact one (27) of the first dial gauge (25) and the electricity of the second dial gauge (26) First point (29) and the second point (30) of the sub- tested flexible display screen (23) of contact two (28) fitting, observe and record the first dial gauge (25) number shown on, the first measured value is obtained；The number shown on the second dial gauge (26) is observed and recorded, obtains the second measurement The torsion resistance that the absolute value of the difference of value, the first measured value and the second measured value is.
- A kind of 7. flexible display screen torsion characteristic measurement apparatus according to claim 1, it is characterised in that：The slide (3) bottom is provided with one and extends the ear mount (301) stretched out downwards, and ear mount (301) is connected with the piston (401) of oil cylinder (4), oil Cylinder (4) laterally sets and is fixed in frame (2).
- A kind of 8. flexible display screen torsion characteristic measurement apparatus according to claim 1, it is characterised in that：The location-plate (21) pad is provided with the inside of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711117618.6A CN107796275B (en) | 2017-11-13 | 2017-11-13 | Flexible display screen distortion characteristic measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711117618.6A CN107796275B (en) | 2017-11-13 | 2017-11-13 | Flexible display screen distortion characteristic measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107796275A true CN107796275A (en) | 2018-03-13 |
| CN107796275B CN107796275B (en) | 2022-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711117618.6A Active CN107796275B (en) | 2017-11-13 | 2017-11-13 | Flexible display screen distortion characteristic measuring device |
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| Country | Link |
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| CN (1) | CN107796275B (en) |
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| US20080289436A1 (en) * | 2004-07-15 | 2008-11-27 | Moventas Oy | Measuring Apparatus in Connection with a Gear |
| CN102114498A (en) * | 2010-12-09 | 2011-07-06 | 苏州塞维拉上吴电梯轨道系统有限公司 | Straightness detection device of semi-automatic T-type guide rail warping straightener |
| CN204064616U (en) * | 2014-07-30 | 2014-12-31 | 苏州弗士达科学仪器有限公司 | A kind of optical characteristic test instrument of multi-usage flat-panel monitor |
| CN106647938A (en) * | 2016-11-14 | 2017-05-10 | 严润达 | Display screen fixing and adjusting device for big data |
| CN106625029A (en) * | 2016-12-27 | 2017-05-10 | 天津市天门进保科技有限公司 | Cutter presetting and measuring device with automatic imaging system |
| CN107063028A (en) * | 2017-04-11 | 2017-08-18 | 曾祥胜 | A kind of brake clutch piece production flatness detecting device |
-
2017
- 2017-11-13 CN CN201711117618.6A patent/CN107796275B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080289436A1 (en) * | 2004-07-15 | 2008-11-27 | Moventas Oy | Measuring Apparatus in Connection with a Gear |
| CN102114498A (en) * | 2010-12-09 | 2011-07-06 | 苏州塞维拉上吴电梯轨道系统有限公司 | Straightness detection device of semi-automatic T-type guide rail warping straightener |
| CN204064616U (en) * | 2014-07-30 | 2014-12-31 | 苏州弗士达科学仪器有限公司 | A kind of optical characteristic test instrument of multi-usage flat-panel monitor |
| CN106647938A (en) * | 2016-11-14 | 2017-05-10 | 严润达 | Display screen fixing and adjusting device for big data |
| CN106625029A (en) * | 2016-12-27 | 2017-05-10 | 天津市天门进保科技有限公司 | Cutter presetting and measuring device with automatic imaging system |
| CN107063028A (en) * | 2017-04-11 | 2017-08-18 | 曾祥胜 | A kind of brake clutch piece production flatness detecting device |
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| Publication number | Publication date |
|---|---|
| CN107796275B (en) | 2022-07-15 |
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Effective date of registration: 20220620 Address after: 310000 No. 258, Xueyuan street, Qiantang District, Hangzhou City, Zhejiang Province Applicant after: China Jiliang University Address before: 314001 room 9-1902, Yao Cheng Plaza, Zhongshan East Road, Nanhu District, Jiaxing, Zhejiang. Applicant before: Li Jianjun |
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