CN108895949B - Device and method for detecting bending degree of plate glass - Google Patents
Device and method for detecting bending degree of plate glass Download PDFInfo
- Publication number
- CN108895949B CN108895949B CN201811178311.1A CN201811178311A CN108895949B CN 108895949 B CN108895949 B CN 108895949B CN 201811178311 A CN201811178311 A CN 201811178311A CN 108895949 B CN108895949 B CN 108895949B
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- 238000005452 bending Methods 0.000 title claims abstract description 43
- 239000005357 flat glass Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000000712 assembly Effects 0.000 claims abstract description 6
- 238000000429 assembly Methods 0.000 claims abstract description 6
- 239000011521 glass Substances 0.000 claims description 46
- 238000001514 detection method Methods 0.000 claims description 25
- 238000005520 cutting process Methods 0.000 claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 15
- 238000003825 pressing Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
Classifications
-
- 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
- G01B5/20—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a device and a method for detecting bending of plate glass. At least two clamp assemblies, it sets up on the guide rail, and every clamp assembly can slide along the guide rail, and every clamp assembly includes slider, first splint group and second splint group. The sliding block is arranged on the guide rail and can slide along the guide rail, and the sliding block is provided with a locking mechanism which can fix the sliding block on the guide rail and can not move; the first clamping plate group is arranged on the top surface of the sliding block and comprises a first rubber pad; the second clamping plate group is arranged on the top surface of the sliding block and comprises a second rubber pad; wherein first rubber pad and second rubber pad set up in opposite directions, are used for pressing from both sides between the two and establish the sample group. The device for detecting the bending degree of the sheet glass has the advantages of convenience in carrying, no limitation of place space, accurate measurement data and high measurement efficiency.
Description
Technical Field
The invention relates to the field of glass production, in particular to a device and a method for detecting the bending of flat glass, which are applied to the rapid detection of the bending of the flat glass and the rapid judgment of the glass quality before the deep processing of the glass.
Background
And cutting two adjacent glass strips on the plate glass by utilizing the principle that the physical characteristics of adjacent areas of the plate glass are consistent or similar, overlapping the upper surfaces of the two glass strips on the upper surface or the lower surface on the lower surface, keeping the two glass strips consistent end to end, and calculating the bending degree by measuring the maximum gap between the two glass strips. The bending degree/flatness/warping degree of the sheet glass is not easy to measure or the measuring precision and efficiency are not high, especially the thin glass with the thickness of 1.0mm-3 mm.
The bending degree is an important index for checking the quality of glass, GB11614 prescribes that the bending degree of the plate glass is not more than 0.2 percent, and the requirements on the flatness of the glass are higher in the fields of high-end coating, mirror making, household appliances, photovoltaics, electronics and the like.
The prior art generally adopts the following measuring means:
Scheme 1: the glass sheet was placed perpendicular to the horizontal plane, the glass surface was abutted against a straightened wire, and the maximum gap between the wire and the glass sheet was measured with a feeler gauge to calculate the glass bending without applying any external force to deform the glass sheet.
Scheme 2: the glass plate is placed perpendicular to the horizontal plane, no external force is applied, a steel ruler with the length of 1000mm is placed randomly along the surface of the glass, and the maximum gap between the ruler and the glass plate is measured by using a feeler gauge to calculate the glass bending degree.
Scheme 3: the glass plate was placed on a horizontal operating table and the maximum gap between the ruler and the glass plate was measured with a feeler gauge to calculate the glass bending.
The existing measurement technology has the following defects:
1. When the wire rope measures the bending degree, the wire rope is easy to deform and displace to generate measurement errors when the feeler gauge contacts the wire rope.
2. The steel ruler and the horizontal operation table top are inconvenient to carry, and the measurement efficiency is low.
3. The bending degree is measured by folding two pieces of glass, the measuring tool is convenient to carry and is not limited by the place space, the folded bow-shaped gap is doubled, and the calculated bending degree value is more accurate.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
Disclosure of Invention
The object of the present invention is to provide a device for detecting the bending of a sheet glass, which is capable of well overcoming the above-mentioned drawbacks of the prior art.
The invention further aims to provide a method for detecting the bending degree of the sheet glass, which has the beneficial effects of simplicity, rapidness and accurate measurement precision.
In order to achieve the above object, the present invention provides a device for detecting bending of a sheet glass, which comprises a guide rail and at least two clamp assemblies. At least two clamp assemblies, it sets up on the guide rail, and every clamp assembly can slide along the guide rail, and every clamp assembly includes slider, first splint group and second splint group. The sliding block is arranged on the guide rail and can slide along the guide rail, and comprises a locking mechanism which can fix the sliding block on the guide rail and can not move; the first clamping plate group is arranged on the top surface of the sliding block and comprises a first rubber pad; the second clamping plate group is arranged on the top surface of the sliding block and comprises a second rubber pad; wherein first rubber pad and second rubber pad set up in opposite directions, are used for pressing from both sides between the two and establish the sample group.
In a preferred embodiment, the first clamping plate set further comprises a first corner, one edge of which is arranged on the top surface of the slider, and the other edge of which is arranged with a first rubber pad.
In a preferred embodiment, the second cleat set further comprises a second corner, a link, a tab, and a spring. One edge of the second bent angle is arranged on the top surface of the sliding block, and the other edge is provided with a through hole; the connecting rod is arranged in the through hole in a penetrating way, and one end of the connecting rod is connected with the second rubber pad; the pull ring is connected with the other end of the connecting rod, and the pull ring and the second rubber pad are respectively positioned at two sides of the through hole; the spring is sleeved on the connecting rod and is positioned between the second rubber pad and the through hole; the pull ring is pulled, and the second rubber pad can overcome the tension of the spring and is far away from the first rubber pad.
In a preferred embodiment, the spring has a pitch diameter smaller than the outer dimension of the second rubber pad but larger than the diameter of the through hole.
In a preferred embodiment, the guide rail has guide grooves on both sides, and the slider further includes a flange, a plurality of steel balls, a retainer, and a seal ring. The flange is matched with the guide groove, and the root of the flange is contacted with the top of the guide groove; the plurality of steel balls are arranged at the root of the flange; a plurality of steel balls are arranged in the retainer; the sealing ring is arranged on the bottom surface of the sliding block and is used for sealing a gap between the flange and the guide groove.
In order to achieve another object, the present invention provides a method for detecting bending of a sheet glass, which uses the above-mentioned detecting device, the detecting method comprising the steps of:
Step one: drawing three cutting lines parallel to each other on a glass sample by using a glass cutting tool;
Step two: cutting out two glass strips with the same specification by using three cutting lines, namely a first sample and a second sample, wherein the first sample and the second sample are respectively provided with a head part, a tail part, an upper surface and a lower surface;
Step three: placing the upper surfaces of the first and second samples in relative overlap or placing the lower surfaces of the first and second samples in relative overlap with the leading portions and trailing portions of the first and second samples aligned to form a sample set;
step four: adjusting the distance between the second rubber pad and the first rubber pad, placing the sample set between the second rubber pad and the first rubber pad, enabling the contact surface of the first sample and the second sample to be perpendicular to the top surface of the sliding block, and enabling the sample set to be firmly clamped between the second rubber pad and the first rubber pad;
Step five: observing and searching a largest arc gap in the middle of the sample group, confirming an arc starting point and an arc ending point of the arc gap, simultaneously moving the first clamping plate group to the arc starting point to clamp, and moving the second clamping plate group to the arc ending point to clamp;
Step six: measuring the maximum gap of the arch gap by using a standard feeler gauge, and measuring the distance between an arch starting point and an arch ending point by using a standard straight ruler, wherein the distance is the arch length;
step seven: calculating a curvature value of the arch gap through a formula c=h/2L, wherein C is the curvature value, h is a value which is 2 times of the arch height, and L is the arch length; and
Step eight: repeating the first step to the seventh step for a plurality of times to obtain a plurality of groups of bending values, wherein the maximum value of the plurality of groups of bending values is the bending of the glass sample.
In a preferred embodiment, the steps one to seven are repeated a minimum of three times.
In a preferred embodiment, the sampling areas on the glass specimen are located at both sides and in the middle of the glass specimen.
Compared with the prior art, the device and the method for detecting the bending degree of the sheet glass have the following beneficial effects: the method for measuring the bending degree is simple and quick, and the measurement precision is 2 times that of the prior art; the detection device is convenient to carry and is not limited by the place space; the detection device can improve the measurement efficiency of the bending degree, and can quickly feed back measurement data to the production line, guide the production line to adjust process parameters in time, and avoid the occurrence of batch unqualified products; meanwhile, the original sheet provided by the customer can quickly acquire the curvature value before processing, and batch quality accidents after processing can be prevented.
Drawings
Fig. 1 is a schematic operation diagram of a detection device according to an embodiment of the present invention.
FIG. 2 is a schematic view of a furniture assembly of a detection device according to an embodiment of the present invention.
Fig. 3 is a schematic view of a first clamping plate set of a detection device according to an embodiment of the present invention.
Fig. 4 is a schematic view of a second clamping plate set of the detection device according to an embodiment of the present invention.
Fig. 5 is a partial schematic view of a second clamping plate set of a detection device according to another embodiment of the present invention.
Fig. 6 is an assembled schematic view of a guide rail and a slider of a detection device according to an embodiment of the present invention.
Fig. 7 is a schematic view of cutting a glass sample according to a detection method according to an embodiment of the present invention.
Fig. 8 is a schematic view of upper and lower surfaces of a glass sample according to a detection method according to an embodiment of the present invention.
Fig. 9 is a schematic diagram illustrating measurement analysis of a detection method according to an embodiment of the present invention.
The main reference numerals illustrate:
1-guide rail, 2-clamp assembly, 21-slider, 211-steel ball, 212-retainer, 213-seal ring, 214-locking mechanism, 22-first cleat set, 221-first bend angle, 222-first rubber pad, 23-second cleat set, 231-second bend angle, 232-second rubber pad, 233-spring, 234-link, 235-tab, 3-first specimen, 4-second specimen, 5-bow start point, 6-bow end point, 10-glass specimen, 101-cut line, 20-specimen set, L-bow length, h-maximum gap, a-head, B-tail, C-bend value, E-upper surface, F-lower surface.
Detailed Description
The following detailed description of embodiments of the invention is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations thereof such as "comprises" or "comprising", etc. will be understood to include the stated element or component without excluding other elements or components.
Fig. 1 to 5 show an operation of a detection device according to an embodiment of the present invention. FIG. 2 is a schematic view of a furniture assembly of a detection device according to an embodiment of the present invention. Fig. 3 is a schematic view of a first clamping plate set of a detection device according to an embodiment of the present invention. Fig. 4 is a schematic view of a second clamping plate set of the detection device according to an embodiment of the present invention. Fig. 5 is a partial schematic view of a second clamping plate set of a detection device according to another embodiment of the present invention. Fig. 6 is an assembled schematic view of a guide rail and a slider of a detection device according to an embodiment of the present invention. A device for detecting bending of a sheet glass according to a preferred embodiment of the present invention includes a guide rail 1 and at least two clamp assemblies 2.
In some embodiments, at least two clamp assemblies 2 are disposed on the rail 1, each clamp assembly 2 being capable of sliding along the rail 1, each clamp assembly 2 including a slider 21, a first clamp plate set 22, and a second clamp plate set 23. The slide block 21 is arranged on the guide rail 1 and can slide along the guide rail 1, and a locking mechanism 214 is arranged on the slide block and can fix the slide block on the guide rail and can not move; the first clamping plate set 22 is arranged on the top surface of the sliding block 21, and the first clamping plate set 22 comprises a first rubber pad 222; the second clamping plate set 23 is arranged on the top surface of the sliding block 21, and the second clamping plate set 23 comprises a second rubber pad 232; the first rubber pad 222 and the second rubber pad 232 are disposed opposite to each other, and are used for sandwiching the sample set 20 therebetween.
Referring to fig. 3, in some embodiments, the first clamping plate set 22 further includes a first corner 221, which is L-shaped when viewed from the side, and has one side disposed on the top surface of the slider 21 and the other side disposed with a first rubber pad 222.
Referring to fig. 4, in some embodiments, the second clamping plate set 23 further includes a second corner 231, a link 234, a tab 235, and a spring 233. The second corner 231 is also L-shaped in side view, one side of the second corner 231 is disposed on the top surface of the slider 21, and the other side has a through hole; the connecting rod 234 is arranged in the through hole in a penetrating way, and one end of the connecting rod 234 is connected with the second rubber pad 232; the pull ring 235 is connected with the other end of the connecting rod 234, and the pull ring 235 and the second rubber pad 232 are respectively positioned at two sides of the through hole; the spring 233 is sleeved on the connecting rod 234 and is positioned between the second rubber pad 232 and the through hole; wherein pulling on the tab 235, the second rubber pad 232 can overcome the tension of the spring 233 away from the first rubber pad 222. The middle diameter of the spring 233 is smaller than the outer dimension of the second rubber pad 232 but larger than the diameter of the through hole, so that the tension of the spring 233 can be ensured to be fully exerted.
In some embodiments, the first corner 221 and the second corner 231 have a connection hole on one side and a threaded hole on the top surface of the slider 21, which may be connected to each other by a screw. In various embodiments, the first corner 221 and the second corner 231 may also be welded directly to the top surface of the slider 21, with the distance between the first rubber pad 222 and the second rubber pad 232 being adjusted by the pull ring 235, the pull rod, and the spring 233.
Referring to fig. 5, in some embodiments, one side of each of the first and second corners 221 and 231 has a long hole, so that the distance between the first and second rubber pads 222 and 232 can be adjusted by adjusting the positions of the first and second corners 221 and 231 on the top surface of the slider 21.
In some embodiments, a rubber layer is further disposed on the top surface of the slider 21 between the first corner 221 and the second corner 231, where the rubber layer is disposed to avoid damage caused by hard contact between the sample set and the top surface of the slider 21.
In some embodiments, the guide rail 1 has guide grooves on both sides, and the slider 21 includes a flange, a plurality of steel balls 211, a retainer 212, and a seal ring 213. The flange is matched with the guide groove, and the root of the flange is contacted with the top of the guide groove; a plurality of steel balls 211 are arranged at the root of the flange; a plurality of steel balls 211 are installed in the holder 212; the sealing ring 213 is disposed on the bottom surface of the slider 21, and is used for sealing the gap between the flange and the guiding groove, so as to prevent the grease from being exposed and dust from entering the gap. The steel ball 211 is arranged between the guide rail 1 and the sliding block 21 mainly for the purpose of enabling the sliding block 21 to move on the guide rail 1 more smoothly and conveniently.
Fig. 7 is a schematic view of cutting a glass sample according to a detection method according to an embodiment of the present invention, as shown in fig. 7 to 9. Fig. 8 is a schematic view of upper and lower surfaces of a glass sample according to a detection method according to an embodiment of the present invention. Fig. 9 is a schematic diagram illustrating measurement analysis of a detection method according to an embodiment of the present invention. According to a preferred embodiment of the present invention, a method for detecting bending of a sheet glass, which uses the above-described detecting device, comprises the steps of:
step one: three cutting lines 101 parallel to each other are drawn on a glass sample 10 by a glass cutting tool;
Step two: cutting two glass strips with the same specification by using three cutting lines 101, namely a first sample 3 and a second sample 4, wherein the first sample 3 and the second sample 4 respectively have a head A and a tail B, an upper surface E and a lower surface F;
Step three: placing the upper surfaces E of the first and second samples 3,4 in relative overlap, or placing the lower surfaces F of the first and second samples 3,4 in relative overlap, and aligning the leading portions a and trailing portions B of the first and second samples 3,4 to form a sample set 20;
Step four: pulling the pull ring 235 to separate the second rubber pad 232 from the first rubber pad 222, placing the sample set 20 between the second rubber pad 232 and the first rubber pad 222, enabling the contact surface of the first sample 3 and the second sample 4 to be perpendicular to the top surface of the sliding block 21, and then loosening the pull ring 235 to ensure that the sample set 20 is firmly clamped between the second rubber pad 232 and the first rubber pad 222;
step five: observing and searching a largest arc gap in the middle of the sample group 20, confirming an arc starting point 5 and an arc ending point 6 of the arc gap, simultaneously moving the first clamping plate group 22 to the arc starting point 5 to clamp, moving the second clamping plate group 23 to the arc ending point 6 to clamp, and simultaneously locking a locking mechanism 214 on the sliding block 21;
step six: measuring the maximum gap h of the arch gap by using a standard feeler gauge, and measuring the distance between the arch starting point 5 and the arch ending point 6 by using a standard straight ruler, wherein the distance is the arch length;
Step seven: calculating a curvature value of the arch gap through a formula c=h/2L, wherein C is the curvature value, h is a value which is 2 times of the arch height, and L is the arch length L; and
Step eight: repeating the steps one to seven for a plurality of times to obtain a plurality of groups of curvature values, and a plurality of groups of curvature values C
The maximum value of (2) is the bending degree of the glass sample 10.
In some embodiments, the number of repeating steps one through seven is typically a minimum of three.
In some embodiments, the sampling areas on the glass coupon 10 are located at both sides and the middle of the glass coupon 10. Thus, accuracy and comprehensiveness of measurement data can be ensured.
Finally, the device and the method for detecting the bending degree of the sheet glass have the following advantages compared with the prior art: the method for measuring the bending degree is simple and quick, and the measurement precision is 2 times that of the prior art; the detection device is convenient to carry and is not limited by the place space; the detection device can improve the measurement efficiency of the bending degree, and can quickly feed back measurement data to the production line, guide the production line to adjust process parameters in time, and avoid the occurrence of batch unqualified products; meanwhile, the original sheet provided by the customer can quickly acquire the curvature value before processing, and batch quality accidents after processing can be prevented.
The foregoing descriptions of specific exemplary embodiments of the present invention are presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application to thereby enable one skilled in the art to make and utilize the invention in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (5)
1. A method for detecting bending of a sheet glass, which measures bending of a sample group by a sheet glass bending detection device, characterized in that the detection device comprises:
A guide rail; and
At least two clamp assemblies disposed on the rail, each clamp assembly being capable of sliding along the rail, each clamp assembly comprising:
a slider disposed on the guide rail and slidable along the guide rail, the slider including a locking mechanism capable of fixing the slider to the guide rail so as not to be movable;
The first clamping plate group is arranged on the top surface of the sliding block and comprises a first rubber pad; and
The second clamping plate group is arranged on the top surface of the sliding block and comprises a second rubber pad;
The first rubber pad and the second rubber pad are arranged in opposite directions, and a sample group is clamped between the first rubber pad and the second rubber pad;
The first clamping plate group further comprises a first bent angle, one edge of the first bent angle is arranged on the top surface of the sliding block, and the other edge of the first bent angle is provided with the first rubber pad;
the second cleat set further comprises:
One edge of the second bent angle is arranged on the top surface of the sliding block, and the other edge of the second bent angle is provided with a through hole;
The connecting rod is arranged in the through hole in a penetrating way, and one end of the connecting rod is connected with the second rubber pad;
The pull ring is connected with the other end of the connecting rod, and the pull ring and the second rubber pad are respectively positioned at two sides of the through hole; and
The spring is sleeved on the connecting rod and is positioned between the second rubber pad and the through hole; the second rubber pad can overcome the tension of the spring and be far away from the first rubber pad by pulling the pull ring;
the method for detecting the bending degree of the plate glass comprises the following steps:
step one: drawing three cutting lines parallel to each other on a glass sample by using a glass cutting tool; step two: cutting two glass strips with the same specification by using the three cutting lines to obtain a first sample and a second sample, wherein the first sample and the second sample are respectively provided with a head part, a tail part, an upper surface and a lower surface;
Step three: placing the upper surfaces of the first and second samples in relative overlap or placing the lower surfaces of the first and second samples in relative overlap and aligning the leading portions and the trailing portions of the first and second samples to form a sample set;
Step four: adjusting the distance between the second rubber pad and the first rubber pad, placing the sample group between the second rubber pad and the first rubber pad, enabling the contact surface of the first sample and the second sample to be perpendicular to the top surface of the sliding block, and enabling the sample group to be firmly clamped between the second rubber pad and the first rubber pad;
Step five: observing and searching a largest arc gap in the middle of the sample group, confirming an arc starting point and an arc ending point of the arc gap, simultaneously moving the first clamping plate group to the arc starting point to clamp, moving the second clamping plate group to the arc ending point to clamp, and simultaneously locking the locking mechanism of the sliding block;
Step six: measuring the maximum gap of the arch gap by using a standard feeler gauge, and measuring the distance between the arch starting point and the arch ending point by using a standard straight ruler, wherein the distance is the arch length;
Step seven: calculating a curvature value of the arch gap through a formula c=h/2L, wherein C is the curvature value, h is a value which is 2 times of the arch height, and L is the arch length; and
Step eight: repeating the first step to the seventh step for a plurality of times to obtain a plurality of groups of bending values, wherein the maximum value of the plurality of groups of bending values is the bending of the glass sample.
2. The method for detecting bending of a sheet glass according to claim 1, wherein the spring has a pitch diameter smaller than the outer dimension of the second rubber pad but larger than the diameter of the through hole.
3. The method for detecting bending of a sheet glass according to claim 1, wherein both sides of the guide rail have guide grooves, and the slider further comprises:
A flange which mates with the channel, the root of the flange contacting the top of the channel;
a plurality of steel balls provided at the root of the flange;
The steel balls are arranged in the retainer; and
And the sealing ring is arranged on the bottom surface of the sliding block and is used for sealing a gap between the flange and the guide groove.
4. The method for detecting bending of a sheet glass according to claim 1, wherein the number of repeating the steps one to seven is at least three.
5. The method for detecting bending of a sheet glass according to claim 1, wherein the sampling areas on the glass specimen are located at both sides and at the middle of the glass specimen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811178311.1A CN108895949B (en) | 2018-10-10 | 2018-10-10 | Device and method for detecting bending degree of plate glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811178311.1A CN108895949B (en) | 2018-10-10 | 2018-10-10 | Device and method for detecting bending degree of plate glass |
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| CN108895949A CN108895949A (en) | 2018-11-27 |
| CN108895949B true CN108895949B (en) | 2024-05-14 |
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| CN201811178311.1A Active CN108895949B (en) | 2018-10-10 | 2018-10-10 | Device and method for detecting bending degree of plate glass |
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| CN110425967A (en) * | 2019-08-29 | 2019-11-08 | 青岛征和工业股份有限公司 | A kind of pin shaft bending degree detecting device |
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| CN108895949A (en) | 2018-11-27 |
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