CN102557420A - Photoelectric positioning device and method for glass cutting machine - Google Patents
Photoelectric positioning device and method for glass cutting machine Download PDFInfo
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- CN102557420A CN102557420A CN2010106000327A CN201010600032A CN102557420A CN 102557420 A CN102557420 A CN 102557420A CN 2010106000327 A CN2010106000327 A CN 2010106000327A CN 201010600032 A CN201010600032 A CN 201010600032A CN 102557420 A CN102557420 A CN 102557420A
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- glass
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- switching element
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Abstract
The invention provides a photoelectric positioning device for a glass cutting machine. The photoelectric positioning device is characterized by comprising a control unit, a motion control unit, a servo-driven unit, a cutting part, an encoder and a photoelectric switch unit, wherein the control unit is electrically connected with the motion control unit and the encoder respectively; the motion control unit is electrically connected with the servo-driven unit and the photoelectric switch unit respectively; the servo-driven unit is electrically connected with the cutting part; and the photoelectric switch unit is configured at the cutting part. The invention has the benefits that large angle deviation is allowed during glass taking and conveying; the bottoms of glass stop blocks are prevented from being scratched during positioning; when the glass is cut into the shape of a quasi parallelogram, a trapezoid or other irregular pieces, the glass utilization ratio is improved to the utmost extent; and cutting precision reduction caused by sliding of glass during positioning of the stop blocks is avoided.
Description
Technical field
The present invention relates to a kind of locating device and method of glass cutting machine, refer in particular to a kind of photoelectric positioning apparatus and method of glass cutting machine.
Background technology
The glass cutting machine of main flow mostly uses the localized mode of block that glass is positioned cutting in the market; The block Positioning Principle is to block a limit of glass with block; Driving glass with belt moves to the block direction by force; Let glass oneself move positive dirction, confirm the position of glass this edge, calculate the position on another limit then with transmitter.All 90 degree angles between the both sides of this locator meams acquiescence glass; So requiring former sheet glass must be regular rectangle; Not so cutting error will appear on four edges, and block retaining during glass the relatively sliding between feed belt and the glass can cause scuffing to the glass bottom.Revise cutting error and can the dimensional precision with the assurance inner glass be dismissed in the glass outside that have error, but the scuffing problem of glass still can't solve.
Now a lot of original sheet glasses in market be because the rectangle degree can't guarantee the cutting edge of having to, though the cutting edge cutting can guarantee cutting accuracy, have reduced the cutting and sizing rate of original sheet glass and increase cost, increase the cutter number in the time of also can be owing to cutting edge and reduce production efficiency; Locate the requirement that the glass that causes scuffing also can't satisfy high-end customer by block, so the producer of a lot of glass deep processings is very dissatisfied to this; Former of indivedual glass deep-processing factory family expenses without thin paper with glass powder as the interlayer between glass, the glass reference position of on belt, slipping away easily when block is located.Block location drawback highlights and makes it more and more to be not suitable for existing situation, so need a kind of brand-new localization method to solve these problems.In this case, the photoelectricity localization method arises at the historic moment.
Glass cutting machine commonly used as benchmark, forms a rectangular coordinate system with X-direction and Y direction, after this system of coordinates of glass entering, it be exactly a little the point in the system of coordinates, cutting machine can be done cutting action in the arbitrfary point in system of coordinates.Usually glass can get into system of coordinates with positive dirction; So two adjacent limits of glass can be parallel to X and Y axle; Just can cut according to the frame of reference; But if this glass is not the rectangle of standard, or it went cutting significant error will occur according to former reference coordinate with non-positive dirction entering system of coordinates so.
Summary of the invention
In view of the above problems, the object of the present invention is to provide a kind of apparatus and method that can utilize the photoelectricity localization method that the cutter head of glass cutting machine is positioned.
To achieve these goals; The technical scheme that the present invention adopts is; A kind of photoelectric positioning apparatus of glass cutting machine is provided; It is characterized in that; It comprises: control unit, motion control unit, servo drive unit, cutting part, scrambler and photoconductive switching element, said control unit are electrically connected with said motion control unit, said scrambler respectively, are used for transmitting control signal and receiving the signal of said motion control unit and said encoder feedback to said motion control unit and said scrambler; Said motion control unit is electrically connected with said servo drive unit, said photoconductive switching element respectively, is used for sending signal and the signal that receives said photoconductive switching element feedback to said servo drive unit; Said servo drive unit is electrically connected with cutting part, is used to drive cutting part and moves to pre-determined direction; Dispose said photoconductive switching element on the said cutting part, said photoconductive switching element is used for sending and receiving optical signals, and converts the optical signal that receives to electrical signal, and then sends to said motion control unit.
During enforcement, also comprise display unit, said display unit is used to show the correspondence position of cutting part and glass.
During enforcement, said control unit is a cpu, according to the instruction of input the function corresponding unit is sent signal.
During enforcement, said photoconductive switching element comprises LASER Light Source, CMOS or CCD photodetector.
The present invention also provides a kind of photoelectricity localization method of glass cutting machine, and it comprises the steps:
Step 1: detect any three the some A (x in the edge portion on glass through photoconductive switching element
1, y1), B (x
2, y
2), C (x
3, y
3) the position;
Step 2: control unit is carried out the initial point O that following mathematical operation draws glass " coordinate (x
1-x
a, y
3-y
a):
A=y
2-y
1B=x
2-x
1M=x
1-x
3N=y
3-y
1Tg α=a/b; Ctg α=b/a; α is the angle of glass deflection;
Can release: x
a=(y
a-n) * ctg α; x
a=m=y
a* tg α;
Obtain at last:
x
a＝b(b×m-an)/(a×a+b×b)；y
a＝b(b×n+a×m)/(a×a+b×b)；α＝actga/b；
Calculate the angle [alpha] of glass deflection, the initial point O of glass " (x
1-x
a, y
3-y
a) coordinate in positive coordinate system;
Step 3: it is the coordinate in the positive coordinate system with the coordinate conversion in the deflection coordinate system that control unit is carried out following mathematical operation:
When α＞0, x '=x
0* cos α; Y '=x
0* sin α; (x
0, y
0) in the deflection coordinate system more arbitrarily,
X=x '-y
0* sin α; Y=y+y
0* cos α; (x y) is the coordinate of same point in positive coordinate system,
Substitution promptly gets: x=x
0* cos α-y
o* sin α; Y=x
0* sin α+y
0* cos α.
Through above-mentioned computing, arbitrfary point on glass is converted into the point in the positive coordinate system, has therefore accomplished the photoelectricity location of glass cutting machine, and control unit sends instruction and makes the cutting part glass-cutting.
Compared with prior art, beneficial effect of the present invention is: allowing glass to get has bigger angle deviation when sheet transmits; Bottom when avoiding glass block location scratches; The glass of cutting be as the criterion the orthogonal rhomboid, trapezoidal these irregular former the time, can improve the utilization ratio of glass to greatest extent; The cutting accuracy that can avoid block when location glass slides and cause reduces.
Description of drawings
Fig. 1 is the module map of each functional unit of the embodiment of the invention.
Fig. 2 A and Fig. 2 B are the schematic diagram calculations of the embodiment of the invention, extrapolate the principle of system of coordinates being carried out deflection.
Fig. 3 A and Fig. 3 B are the action flow charts of the embodiment of the invention, detailed analysis how confirm the position of glass through three points.
Description of reference numerals: photoelectric positioning apparatus-1; Control unit-11; Motion control unit-12; Servo drive unit-13; Cutting part-14; Scrambler-15; Photoconductive switching element-16; Display unit-17.
Embodiment
As shown in Figure 1; The present invention provides a kind of photoelectric positioning apparatus 1 of glass cutting machine; It comprises: control unit 11, motion control unit 12, servo drive unit 13, cutting part 14, scrambler 15 and photoconductive switching element 16; Said control unit 11 is electrically connected with said motion control unit 12, said scrambler 15 respectively, is used for transmitting control signal with said scrambler 15 and receiving the signal of said motion control unit 12 and said scrambler 15 feedbacks to said motion control unit 12; Said motion control unit 12 is electrically connected with said servo drive unit 13, said photoconductive switching element 16 respectively, is used for sending signals and the signal that receives said photoconductive switching element 16 feedbacks to said servo drive unit 13; Said servo drive unit 13 is electrically connected with cutting part 14, is used to drive cutting part 14 and moves to pre-determined direction; Dispose said photoconductive switching element 16 on the said cutting part 14, said photoconductive switching element 16 is used for sending and receiving optical signals, and converts the optical signal that receives to electrical signal, and then sends to said motion control unit 12.
Said photoelectric positioning apparatus 1 also comprises display unit 17, and said display unit 17 is used to show the correspondence position of cutting part 14 and glass; Said control unit 11 is cpus, according to the instruction of input the function corresponding unit is sent signal; Said photoconductive switching element 16 comprises LASER Light Source, CMOS or CCD photodetector.
Fig. 2 A and Fig. 2 B are the schematic diagram calculations of the embodiment of the invention, detailed analysis glass get into the situation in positive coordinate system with certain angle.Fig. 2 A representes that glass gets into system of coordinates with the angular deflection of+α, and Fig. 2 B figure expression glass gets into system of coordinates with the angular deflection of-α.X-O-Y coordinate among Fig. 2 A and Fig. 2 B is a positive coordinate, and during glass cutting, cutting part 14 moves in this system of coordinates; X '-O-Y ' coordinate is a deflection coordinate system, also is and the corresponding system of coordinates of glass that the four edges of glass all is the diaxon that is parallel to this system of coordinates; O ' is a point of glass in Fig. 2, and putting with this is that target is calculated, and deduces to other any points on glass, and it can represent any point on glass.For instance: need to cut an X ' edge lengths along glass be one meter straight line on glass, be starting point with O ', starting point coordinate is (x in deflection coordinate system so
0, y
0), terminal point coordinate is (x
0+ 1, y
0).But cutting part 14 is not familiar with deflection coordinate, only can in positive coordinate, move, so will the point in the deflection coordinate be converted into the point in the positive coordinate.
Can get by Fig. 2 A: when α＞0, x '=x
0* cos α; Y '=x
0* sin α;
Because x=x '-y
0* sin α; Y=y '+y
0* cos α;
Substitution promptly gets: x=x
0* cos α-y
o* sin α; Y=x
0* sin α+y
0* cos α.
When α＜0, see Fig. 2 B, this formula is still general.So on glass anyly be converted into the point of positive coordinate in being by this formula.
Fig. 3 A and Fig. 3 B are the action flow charts of the embodiment of the invention, detailed analysis how confirm the position of glass through three points.Introduced the α among Fig. 2 at Fig. 3 A and Fig. 3 B and how to have got, also had the initial point O of glass " how to be found.Fig. 3 A and Fig. 3 B are respectively the synoptic diagram that gets into the glass cutting platform with the angle of negative bias and positively biased; When glass gets into certain angle; Utilization is installed in the edge portion that said photoconductive switching element 16 on the cutting part 14 is discerned glass: said photoconductive switching element 16 emission bright dippings, and light runs into glass and is reflected, and can judge that cutting part 14 is above glass; Cutting part 14 continuation are moved and are suddenly disappeared up to the light at a time point reflection, can judge that cutting part 14 has moved to the edge portion of glass; Three some A, B, C are scanned the accurate coordinate that draws these three points.Be as the criterion for+α with right figure deflection angle, set coordinate: A (x
1, y
1); B (x
2, y
2); C (x
3, y
3); The initial point O of glass so " coordinate just should be (x
1-x
a, y
3-y
a).
Can get by Fig. 3 B: a=y
2-y
1B=x
2-x
1M=x
1-x
3N=y
3-y
1Tg α=a/b; Ctg α=b/a.
Can release: x
a=(y
a-n) * ctg α; x
a=m=y
a* tg α.
Obtain at last:
x
a＝b(b×m-an)/(a×a+b×b)；y
a＝b(b×n+a×m)/(a×a+b×b)；
α＝actga/b。
Can calculate the angle of glass deflection α like this, the initial point O of glass " coordinate in positive coordinate system.
By top two computation processes, can be with any point on glass, any graphic projection that needs cutting is among positive coordinate system, and cutting part 14 gets final product cutting.The localized method of this glass does not need glass on cutting bed, to move, so avoided the problem that scratches; All course of action and computation process are accomplished by computingmachine automatically, and the fast precision of speed is high; Because A, B seek and calculate deflection angles,, can farthest reduce the waste of glass raw sheet like this at 2 so, only need on minor face slightly that made allowance gets final product even glass rectangle degree has difference slightly on long limit.
More than shown in be merely the preferred embodiments of the present invention, only be illustrative for the purpose of the present invention, and nonrestrictive.Common knowledge personnel understand at this professional skill field tool, in the spirit and scope that claim of the present invention limited, can carry out many changes to it, revise, even the change of equivalence, but all will fall within the scope of protection of the present invention.
Claims (5)
1. the present invention provides a kind of photoelectric positioning apparatus of glass cutting machine; It is characterized in that; It comprises: control unit, motion control unit, servo drive unit, cutting part, scrambler and photoconductive switching element; Said control unit is electrically connected with said motion control unit, said scrambler respectively, is used for transmitting control signal and receiving the signal of said motion control unit and said encoder feedback to said motion control unit and said scrambler; Said motion control unit is electrically connected with said servo drive unit, said photoconductive switching element respectively, is used for sending signal and the signal that receives said photoconductive switching element feedback to said servo drive unit; Said servo drive unit is electrically connected with cutting part, is used to drive cutting part and moves to pre-determined direction; Dispose said photoconductive switching element on the said cutting part, said photoconductive switching element is used for sending and receiving optical signals, and converts the optical signal that receives to electrical signal, and then sends to said motion control unit.
2. the photoelectric positioning apparatus of glass cutting machine as claimed in claim 1 is characterized in that, also comprises display unit, and said display unit is used to show the correspondence position of cutting part and glass.
3. the photoelectric positioning apparatus of glass cutting machine as claimed in claim 1 is characterized in that, said control unit is a cpu, according to the instruction of input the function corresponding unit is sent signal.
4. the photoelectric positioning apparatus of glass cutting machine as claimed in claim 1 is characterized in that, said photoconductive switching element comprises LASER Light Source, CMOS or CCD photodetector.
5. the present invention provides a kind of photoelectricity localization method of glass cutting machine, and it comprises the steps:
Step 1: detect any three the some A (x in the edge portion on glass through photoconductive switching element
1, y1), B (x
2, y
2), C (x
3, y
3) the position;
Step 2: control unit is carried out the initial point O that following mathematical operation draws glass " coordinate (x
1-x
a, y
3-y
a):
A=y
2-y
1B=x
2-x
1M=x
1-x
3N=y
3-y
1Tg α=a/b; Ctg α=b/a; α is the angle of glass deflection;
Can release: x
a=(y
a-n) * ctg α; x
a=m=y
a* tg α;
Obtain at last:
x
a＝b(b×m-an)/(a×a+b×b)；y
a＝b(b×n+a×m)/(a×a+b×b)；α＝actga/b；
Calculate the angle [alpha] of glass deflection, the initial point O of glass " (x
1-x
a, y
3-y
a) coordinate in positive coordinate system;
Step 3: it is the coordinate in the positive coordinate system with the coordinate conversion in the deflection coordinate system that control unit is carried out following mathematical operation:
X '=x
0* cos α; Y '=x
0* sin α; (x
0, y
0) be the arbitrfary point during deflection coordinate is,
X=x '-y
0* sin α; Y=y '+y
0* cos α; (x y) is the coordinate of same point in positive coordinate system,
Substitution promptly gets: x=x
0* cos α-y
o* sin α; Y=x
0* sin α+y
0* cos α.
Through above-mentioned computing, arbitrfary point on glass is converted into the point in the positive coordinate system, has therefore accomplished the photoelectricity location of glass cutting machine, and control unit sends instruction and makes the cutting part glass-cutting.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010600032.7A CN102557420B (en) | 2010-12-22 | 2010-12-22 | Photoelectric positioning device and method for glass cutting machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010600032.7A CN102557420B (en) | 2010-12-22 | 2010-12-22 | Photoelectric positioning device and method for glass cutting machine |
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| Publication Number | Publication Date |
|---|---|
| CN102557420A true CN102557420A (en) | 2012-07-11 |
| CN102557420B CN102557420B (en) | 2014-10-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104428263A (en) * | 2012-07-12 | 2015-03-18 | 坂东机工株式会社 | Scribing method and scribing device |
| CN107053310A (en) * | 2017-04-28 | 2017-08-18 | 武汉科技大学 | A kind of molded fiber plate precise positioning method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201424433Y (en) * | 2009-06-19 | 2010-03-17 | 济南德佳玻璃机器有限公司 | Automatic edge searching positioning system of laser positioning sensor at the edge of glass |
| CN101722709A (en) * | 2009-11-17 | 2010-06-09 | 厦门太豪电子制版有限公司 | Automatic positioning and fault-tolerant safety device of frame roller in digital electronic engraving system |
| CN201962195U (en) * | 2010-12-22 | 2011-09-07 | 洛阳北方玻璃技术股份有限公司 | Photoelectric positioning device of glass cutter |
-
2010
- 2010-12-22 CN CN201010600032.7A patent/CN102557420B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201424433Y (en) * | 2009-06-19 | 2010-03-17 | 济南德佳玻璃机器有限公司 | Automatic edge searching positioning system of laser positioning sensor at the edge of glass |
| CN101722709A (en) * | 2009-11-17 | 2010-06-09 | 厦门太豪电子制版有限公司 | Automatic positioning and fault-tolerant safety device of frame roller in digital electronic engraving system |
| CN201962195U (en) * | 2010-12-22 | 2011-09-07 | 洛阳北方玻璃技术股份有限公司 | Photoelectric positioning device of glass cutter |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104428263A (en) * | 2012-07-12 | 2015-03-18 | 坂东机工株式会社 | Scribing method and scribing device |
| CN107053310A (en) * | 2017-04-28 | 2017-08-18 | 武汉科技大学 | A kind of molded fiber plate precise positioning method |
| CN107053310B (en) * | 2017-04-28 | 2019-03-22 | 武汉科技大学 | A kind of molded fiber plate precise positioning method |
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| Publication number | Publication date |
|---|---|
| CN102557420B (en) | 2014-10-08 |
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