CN101619960A - Coplanarity detection device and coplanarity detection method - Google Patents
Coplanarity detection device and coplanarity detection method Download PDFInfo
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- CN101619960A CN101619960A CN200810068169A CN200810068169A CN101619960A CN 101619960 A CN101619960 A CN 101619960A CN 200810068169 A CN200810068169 A CN 200810068169A CN 200810068169 A CN200810068169 A CN 200810068169A CN 101619960 A CN101619960 A CN 101619960A
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Abstract
The invention provides a coplanarity detection device and a coplanarity detection method. The detection device comprises a base platform, a light source, a signal receiving and converting unit, a processing unit and a display unit, wherein the signal receiving and converting unit is used for receiving an optical signal generated by the light source and converting the received optical signal into a signal receivable for the processing unit; the processing unit is used for processing the signal transmitted by the signal receiving and converting unit; the display unit is used for displaying a processing result of the processing unit; the light source comprises a light source positioning platform arranged on the base platform and a plurality of light emergent parts arranged on the light source positioning platform; the light emergent parts are arranged on the light source positioning platform according to a distributed dimension of a part of a to-be-detected workpiece needing detecting; and the signal receiving and converting unit is arranged relative to the light source to receive light emitted by the light emergent parts, and the light emergent parts are separated from the signal receiving and converting unit by the part of the to-be-detected workpiece which needs detecting and is arranged on the base platform. By adopting the structure, the plurality of light emergent parts can be utilized to detect a plurality of parts on the to-be-detected workpiece needing detecting at the same time, the testing time is extremely short and the efficiency is high.
Description
Technical field
The present invention relates to a kind of coplane degree pick-up unit and coplane degree detection method.
Background technology
Radome is a part indispensable in each class of electronic devices.Whether radome generally is a stamping parts, in manufacture process, need be in the radome leg and carry out the coplane degree detection in the same plane.
The method of manual detection is to place radome to be checked on the one examination criteria platform and make the radome leg and platform is fitted, and then, manually detect gap width between leg and the platform by feeler gauge, thereby whether the coplane degree of judging leg reaches requirement.Because detecting, feeler gauge need artificial each bar leg to detect respectively, so efficient is very low to radome; And, also make workman's eye fatigue easily, cause erroneous judgement and misjudgement, there are very big hidden danger in precision and stability.
Existing coplane degree checkout equipment adopts displacement transducers such as laser scanning, three coordinate measuring machine, detector bar to gather abundant measured point height coordinate usually, fits to a plane with these height values then, judges the coplane degree of radome leg with this.This method need scan whole radome, and detection time is very long, efficient is low, can not be applied to continuously, modern production streamline fast; And laser scanning head and three coordinate measuring machine cost an arm and a leg, and cost is higher.
In addition, the technology of the coplane degree of workpiece appears judging by the distance of CCD (Charge Coupled Device, charge-coupled image sensor) collection measured workpiece and reference field in industry.Yet there is following defective in this technology: 1, expensive CCD and the corresponding data acquisition disposal system of needs is unfavorable for the cost control of enterprise's large-scale production; 2, need record the concrete distance values of workpiece and reference field, relate to data acquisition, processing, judgement several steps, time efficiency is not high; 3, the CCD surface is stained by dust, greasy dirt easily, thereby influences system's operate as normal, and plant maintenance requires very high.
Disclosed a kind of instrument for online measuring coplanarity error of welding leg in the prior art.Described instrument for online measuring coplanarity error of welding leg is made of measurement light source, reflective mirror, photelectric receiver, metering circuit, computing machine and treatment circuit, motor and driving circuit thereof, measurement standard flat board, workbench and power supply.The reflective mirror that measurement light source is installed by the dull and stereotyped center of measurement standard is exported the light source of directional light, and workbench is equipped with photelectric receiver, and photelectric receiver is connected to computing machine by metering circuit, and motor-driven measurement standard flat board rotates on workbench.In use, radome is fallen to being placed on the measurement standard flat board of surveying instrument, the dull and stereotyped applying of the leg of its radome and measurement standard forms coplane.If certain leg torsional deformation of radome, this leg will and other leg coplanes between form the gap.The directional light of surveying instrument produces some signal output by this gap on photelectric receiver, the gap size that on computer screen, can show leg through the conversion of metering circuit and computing machine and treatment circuit, if this gap is overproof amount, the computing machine output alarm signal, by artificial or mechanical arm this radome is fallen as goods rejection, to guarantee the qualification rate of product.
Utilize motor-driven measurement standard flat board on workbench, to rotate in the above-mentioned instrument for online measuring coplanarity error of welding leg, thereby utilize the light of single-measurement light source to detect each leg of radome successively to judge whether radome is specification product.Therefore, there are shortcomings such as detection speed is slow, efficient is lower in this instrument for online measuring coplanarity error of welding leg.In addition, this instrument for online measuring coplanarity error of welding leg adopts LASER Light Source, circuit complexity, and cost is higher.
Summary of the invention
The coplane degree pick-up unit that provides a kind of detection efficiency high is provided technical matters to be solved by this invention.
Another technical matters to be solved by this invention is to provide a kind of and adopts above-mentioned coplane degree pick-up unit to carry out the method that coplane degree detects, its detection efficiency height.
For coplane degree pick-up unit of the present invention, above-mentioned technical matters is bright to be realized like this: this coplane degree pick-up unit comprises that base station, light source, signal with reference field receive conversion unit, processing unit and display unit; Described signal receives conversion unit and is used to receive the light signal of light source generation and convert thereof into the receivable signal of processing unit; Described processing unit is used for processing signals and receives the signal that conversion unit transmitted; Described display unit is used for the result of display processing unit; Described light source comprises the light source positioning table be located on the base station and is located at some smooth outgoing portion on the light source positioning table; Described smooth outgoing portion is arranged on the light source positioning table according to the distributed dimension of the part that needs on the workpiece for measurement to detect; Described signal receives conversion unit and light source and is oppositely arranged receiving the light that light outgoing portion sends, and described smooth outgoing portion and signal receive on the workpiece for measurement that is placed between the conversion unit on the base station need detection part separate.
For coplane degree detection method of the present invention, above-mentioned technical matters is realized like this: workpiece for measurement is put into the detection station, the part that needs on the workpiece for measurement to detect is contacted with the reference field of base station, and the part that needs on the workpiece for measurement to detect is received between the conversion elements in light outgoing portion and signal; Signal receives conversion elements the light signal that light source sends is passed to processing unit; By needing the part of detection and the slit corresponding relation between the base station surface on demarcation receiving light power size and the workpiece for measurement, judge the coplane degree that needs the part of detection on the workpiece for measurement.
Compared with prior art, light source in the technique scheme has a plurality of smooth outgoing portion, and each light outgoing portion is arranged on the light source positioning table according to the distributed dimension of the part that needs on the workpiece for measurement to detect, therefore, can utilize a plurality of smooth outgoing portion to detect simultaneously to need on the workpiece for measurement a plurality of parts that detect, test duration is extremely short, and efficient is higher.
Description of drawings
Fig. 1 is base station in the coplane degree pick-up unit of one embodiment of the invention and the schematic perspective view of being located at the subelement on the base station.
Fig. 2 is for being located at the schematic perspective view of the light source on the base station among Fig. 1.
Fig. 3 is a kind of schematic perspective view of metallic shield to be measured.
Fig. 4 is the end enlarged diagram of optical fiber among Fig. 1.
Fig. 5 is the schematic perspective view of fiber orientation cover of the coplane degree pick-up unit of one embodiment of the invention.
Fig. 6 is used for fixing the side schematic view of optical fiber for fiber orientation cover among Fig. 3.
Fig. 7 is used to detect the work synoptic diagram of metallic shield shown in Figure 3 for coplane degree pick-up unit shown in Figure 1.
Fig. 8 is the enlarged diagram of A part among Fig. 7.
Embodiment
In order to make technical matters to be solved by this invention, technical scheme and beneficial effect clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Figure 1 and Figure 2 is the coplane degree pick-up unit of one embodiment of the invention.This coplane degree pick-up unit comprises that base station 100, light source 200, signal receive conversion unit 300, some connectors 420,440, amplifying unit 500, processing unit 600 and display unit 700.It is corresponding with light source 200 that this signal receives conversion unit 300, and signal reception conversion unit 300 is connected with processing unit 600.The concrete structure of this coplane degree pick-up unit is as described below.
This base station 100 is the very high rectangular platform of a flatness, and its upper surface is as the reference field that detects, and its middle part is provided with a roughly rectangular locating slot 120.
This light source 200 comprises to be located at the light source positioning table 210 in the locating slot 120 and to be located at some smooth outgoing portion on the light source positioning table 210.The profile of this light source positioning table 210 and locating slot 120 couplings, thus light source positioning table 210 can be located in the locating slot 120.
In the present embodiment, each light outgoing portion is arranged on the paster type light emitting type 220,230,240 on the light source positioning table 210.These paster type light emitting types 220,230,240 are made up of the paster type light emitting type of three kinds of colors of red, green, blue, its distributed dimension according to the leg 820 (as shown in Figure 3) of workpiece for measurement radome 800 is arranged on the outer peripheral face of light source positioning table 210, and the color of two adjacent paster type light emitting types 220,230,240 is inequality, to avoid signal interference and to crosstalk, has excellent reliability.In addition, these paster type light emitting types 220,230,240 also can be made up of the paster type light emitting type of two kinds of colors, are located on the light source positioning table 210 as long as the paster type light emitting type of different colours intersects.
Because paster type light emitting type has extra small volume, power consumption is little, monochromaticity good (helping improving the precision of measurement), reliability height, long (can reach 100,000 hours), cheap advantages such as (less than one of yuans) of life-span, therefore, adopt paster type light emitting type can effectively reduce the volume of light source 200, the measuring accuracy of the whole device of raising, and can reduce the cost of whole device.
This signal receives conversion unit 300 and is used to receive the light that light source 200 produces, and converts the light that is received to processing unit 600 receivable signals.In the present embodiment, described signal reception conversion unit 300 comprises the some electrooptical devices with above-mentioned paster type light emitting type 220,230,240 corresponding one by one settings, as photoelectric diode, phototriode or electric capacity electrooptical device etc.
In order to make described electrooptical device and above-mentioned paster type light emitting type 220,230,240 corresponding to one by one increasing receiving efficiency and anti-interference better, described signal receives conversion unit 300 and also comprises and be arranged on the base station 100 and the some optical fiber 320 that are connected with described photoelectric conversion device.These optical fiber 320 and above-mentioned paster type light emitting type 220,230,240 corresponding one by one settings, and these paster type light emitting types 220,230,240 are with the distance between the optical fiber 320 is identical accordingly.。
Please refer to Fig. 4, an end that is oppositely arranged in each optical fiber 320 and the above-mentioned paster type light emitting type 220,230,240 is a receiving end 322, and the relative other end then links to each other with an amplifying unit 500 by connector 420,440.Wherein, receiving end 322 is hemispheric structure, is equivalent to install convex lens additional at receiving end 322, can receive more optical information, makes signal more stable.
In addition, can also plate one deck anti-reflection film 324, to improve the receiving efficiency of light at receiving end 322 outside surfaces of hemispheric structure.Wherein, can plate the anti-reflection film 324 of corresponding wavelength according to the light wavelength that every optical fiber 320 receiving ends 322 pairing paster type light emitting types 220,230,240 send at the outside surface of receiving end 322.Therefore, anti-reflection film 324 can be a kind of in the anti-reflection film of three kinds of color wavelength of red, green, blue.
These connectors 420,440 are arranged on the base station 100, and be positioned at locating slot 120 and optical fiber 320 around.In the present embodiment, these connectors 420,440 comprise that a pair of 10 advance 10 and go out the joints of optical fibre 420 and a pair of 5 and advance 5 and go out the joints of optical fibre 440.As shown in Figure 1, this 10 advances 10 and goes out the left and right sides that the joints of optical fibre 420 are positioned at locating slot 120, and this 5 advances 5 and go out the both sides, front and back that the joints of optical fibre 440 are positioned at locating slot 120.The number of choosing and arrange the leg 820 that depends on workpiece for measurement radome 800 and the arrangement situation of connector 420,440.
Wherein, the optical wavelength that each connector 420,440 transmits at every optical fiber 320 is equipped with the bandpass filter (not shown) of corresponding wavelength, as a kind of optical filter.For example, centre wavelength is the green glow bandpass filter of 525nm, passband 500-550nm, average transmittance T＞90%, rejection zone UV-480nm﹠amp; 600-1100nm, average transmittance T＜1%.By bandpass filter is set, can reduce other color interferences of light, further guarantee the reliability of test.
One end of this amplifying unit 500 (as fiber amplifier) links to each other with connector 420,440, and the other end then joins with processing unit 600, and light signal is transformed into electric signal, is transferred to processing unit 600 after the amplification.The fiber amplifier that this amplifying unit 500 can adopt Japanese KEYENCE (Keyemce) company is as models such as FS2-65 (NPN type), FS2-65P (positive-negative-positive) in the FS series fiber amplifier and FS2-60G.
This processing unit 600 can be single-chip microcomputer or computing machine, is used to handle the electric signal that amplifying unit 500 is transmitted, and demonstrates testing result by display unit 700.
This display unit 700 can have the structure of Presentation Function for LCDs etc., demonstrates testing result by modes such as image, sound or its combinations.
Above-mentioned is the concrete structure of the coplane degree pick-up unit of one embodiment of the invention, and for easily optical fiber 320 being fixed on the base station 100, this coplane degree pick-up unit can further comprise a locating cover 900.
As shown in Figure 5 and Figure 6, this locating cover 900 is a roughly rectangular annular plate structure, and its middle part has opening 920, uses for light source positioning table 210 and passes.In other words, this locating cover 900 is set on the light source positioning table 210.This locating cover 900 is provided with some dovetail grooves 940 in order to positioning optical waveguides 320 with the side that base station 100 faces mutually.These dovetail grooves 940 are to form according to optical fiber 320 position distribution situations and optical fiber 320 hearts footpath dimensioned, and its distributing position and paster type light emitting type 220,230,240 are corresponding one by one.The bottom surface of each dovetail groove 940 and two inclined-planes are fixed on optical fiber 320 on the base station 100.Locating cover 900 also plays the effect of protection optical fiber 320 except can fixed fiber 320.
As Fig. 1 and shown in Figure 7, be provided with four pairs of reference columns 140 in base station 100, these reference columns 140 are distributed in the position of four angle correspondences of locating slot 120, and each lays respectively between two connectors 420,440 reference column 140, and locating cover 900 can and be fixed on the base station 100 by these reference column 140 location.Each cooperatively interacts to locating cover 900 one jiao of reference column 140, locating cover 900 is fixed on the base station 100 exactly and the precision that guarantees to detect.
The following describes and adopt above-mentioned coplane degree pick-up unit to carry out the method that coplane degree detects.
When not having radome 800 to be detected, the light that paster type light emitting type 220,230,240 sends is by the receiving end 322 of short distance atmospheric propagation to optical fiber 320, optical energy attenuation seldom at this moment, optical fiber 320 receives most of energy, through amplifying unit 500 light signal is amplified to draw bigger luminous energy reading.
Please refer to Fig. 7 and Fig. 8, during detection, artificial or mechanical arm is put into the detection station with radome to be detected 800, radome 800 legs 820 are contacted with base station 100 upper surfaces down, and receiving end 322 is corresponding one to one with radome 800 legs 820, and promptly conductively-closed cover 800 legs 820 separate between paster type light emitting type 220,230,240 and the corresponding receiving end 322; Because light that paster type light emitting type 220,230,240 sends and 800 legs 820 of the travel path conductively-closed cover between the receiving end 322 intercept, light can only transfer to receiving end 322 from the slit between radome 800 legs 820 and base station 100 surfaces, thereby the luminous energy that optical fiber 320 receives is considerably less, and it is less to amplify the light signal that obtains by amplifying unit 500.By demarcating the slit corresponding relation between receiving light power size and radome 800 legs 820 and base station 100 surfaces, just can judge the coplane degree of radome 800 legs 820.For example, if certain leg 820 torsional deformation of radome 800, gap between this leg 820 and the base station 100 will be greater than the gap between other leg 820 and the base station 100, the light intensity that receiving end 322 herein receives is bigger, gap between receiving light power and leg 820 and the base station 100 is proportional, according to the comparing result of light intensity that receives and pre-set threshold, whether the coplane degree that just can judge workpiece reaches requirement.
Wherein, above-mentioned threshold value can be formulated according to the actual production demand, and the coplane degree requirement for different has different threshold values.With the coplane degree requirement is that 0.1mm is the setting of example explanation threshold value.Coplane degree is that 0.1mm is a criterion, if the coplane degree between each leg 820 of radome to be detected 800 just thinks that less than 0.1mm workpiece is qualified, otherwise is exactly defective.What but in fact real participation was judged is the light intensity magnitude that optical fiber 320 is accepted, and the foundation of judgement is exactly a threshold value, and it is a predetermined light intensity numerical value, the light intensity that optical fiber 320 receives when coplane degree is 0.1mm exactly of its correspondence.That is to say, when the leg 820 of radome 800 to be detected and the gap between the base station 100 are 0.1mm, the light intensity that optical fiber 320 receives.Can process a coplane degree in advance and just in time be the radome 800 of 0.1mm, it is made as the examination criteria piece.During setting threshold, this calibrated bolck is put into the detection station, the light intensity that this moment, optical fiber 320 was accepted is exactly a threshold value, after this every with the coplane degree requirement be 0.1mm radome to be detected 800 all with this threshold ratio.For different coplane degree requirements, can make different calibrated bolcks, for example 0.09mm, 0.08mm or the like just can obtain different threshold values with different calibrated bolcks.In testing process, actual light intensity that records and threshold value are asked poor, if difference, illustrates the light intensity that receives greater than zero greater than threshold value, the leg 820 of radome 800 promptly to be detected and the gap of base station 100 are unacceptable product, otherwise are exactly certified products greater than 0.1mm.
In sum, light source 200 in the foregoing description has a plurality of smooth outgoing portions (being paster type light emitting type 220,230,240), and each light outgoing portion is arranged on the light source positioning table 210 according to the distributed dimension of the part (being leg 820) that needs on the workpiece for measurement to detect, therefore, can utilize a plurality of smooth outgoing portion to detect simultaneously to need on the workpiece for measurement a plurality of parts that detect, test duration is extremely short, and efficient is higher.
In addition, by changing elements such as arrangement mode that light source 200 is a light emitting diode 220,230,240 or density, locating cover 900, connector 420,440, can detect the coplane degree of the workpiece flanging of different shape.In addition, can whether use amplifying unit 500 according to the actual state decision.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1, a kind of coplane degree pick-up unit comprises that base station, light source, signal with reference field receive conversion unit, processing unit and display unit; Described signal receives conversion unit and is used to receive the light signal of light source generation and convert thereof into the receivable signal of described processing unit; Described processing unit is used to handle described signal and receives the signal that conversion unit transmitted; Described display unit is used to show the result of described processing unit; It is characterized in that described light source comprises the light source positioning table be located on the described base station and is located at some smooth outgoing portion on the described light source positioning table; Described smooth outgoing portion is arranged on the described light source positioning table according to the distributed dimension of the part that needs on the workpiece for measurement to detect; Described signal receives conversion unit and light source and is oppositely arranged receiving the light that described smooth outgoing portion sends, and described smooth outgoing portion separates with the part that signal receives need detection on the workpiece for measurement that is placed between the conversion unit on the described base station.
2, coplane degree pick-up unit as claimed in claim 1 is characterized in that, each light outgoing portion is arranged on a paster type light emitting type on the described light source positioning table.
3, coplane degree pick-up unit as claimed in claim 2 is characterized in that, the color difference of described adjacent paster type light emitting type.
4, coplane degree pick-up unit as claimed in claim 1 is characterized in that, described signal reception conversion unit comprises the some electrooptical devices with the corresponding one by one setting of described smooth outgoing portion.
5, coplane degree pick-up unit as claimed in claim 4 is characterized in that, described signal receives conversion unit and comprises the some optical fiber that are arranged on the described base station, described optical fiber and the corresponding one by one setting of light outgoing portion; An end that is oppositely arranged in each optical fiber and the light outgoing portion is a receiving end, and the other end is connected with photoelectric conversion device.
6, coplane degree pick-up unit as claimed in claim 5 is characterized in that, described coplane degree pick-up unit also comprises an amplifying unit; The other end of each optical fiber is connected with processing unit by described amplifying unit.
7, coplane degree pick-up unit as claimed in claim 5 is characterized in that, described receiving end is hemispheric structure.
8, as claim 5 or 7 described coplane degree pick-up units, it is characterized in that, be provided with anti-reflection film in the receiving end outside surface of described optical fiber.
9, coplane degree pick-up unit as claimed in claim 6 is characterized in that, described coplane degree pick-up unit also comprises a connector, and the other end of described optical fiber is connected with described amplifying unit by described connector; Described connector pin is equipped with the bandpass filter of corresponding wavelength to the optical wavelength of every Optical Fiber Transmission.
10, coplane degree pick-up unit as claimed in claim 5, it is characterized in that, described pick-up unit also comprises the locating cover that is set on the described light source positioning table, described locating cover is provided with some dovetail grooves in order to positioning optical waveguides with the side that base station faces mutually, and the distributing position of described dovetail groove and light outgoing portion are corresponding one by one.
11, coplane degree pick-up unit as claimed in claim 10, it is characterized in that, be provided with somely to reference column in described base station, described locating cover is by described reference column location and be fixed on the described base station, and each cooperatively interacts to reference column and locating cover one jiao and locating cover is fixed on base station.
12, a kind of method that adopts coplane degree pick-up unit as claimed in claim 1 to carry out the coplane degree detection, workpiece for measurement is put into the detection station, the part that needs on the workpiece for measurement to detect is contacted with the reference field of base station, and the part that needs on the workpiece for measurement to detect is received between the conversion elements in light outgoing portion and signal; Signal receives conversion elements the light signal that light source sends is passed to processing unit; By needing the part of detection and the slit corresponding relation between the base station surface on demarcation receiving light power size and the workpiece for measurement, judge the coplane degree that needs the part of detection on the workpiece for measurement.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810068169A CN101619960A (en) | 2008-07-01 | 2008-07-01 | Coplanarity detection device and coplanarity detection method |
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| CN200810068169A CN101619960A (en) | 2008-07-01 | 2008-07-01 | Coplanarity detection device and coplanarity detection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102826262A (en) * | 2011-06-17 | 2012-12-19 | 昆山金群力精密模具有限公司 | Automatic detecting and packing equipment |
| WO2013063946A1 (en) * | 2011-10-31 | 2013-05-10 | 西安理工大学 | Apparatus for measuring axis coplanarity of orthogonal rotary shaft having built-in intersection and precision measurement method |
-
2008
- 2008-07-01 CN CN200810068169A patent/CN101619960A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102826262A (en) * | 2011-06-17 | 2012-12-19 | 昆山金群力精密模具有限公司 | Automatic detecting and packing equipment |
| WO2013063946A1 (en) * | 2011-10-31 | 2013-05-10 | 西安理工大学 | Apparatus for measuring axis coplanarity of orthogonal rotary shaft having built-in intersection and precision measurement method |
| US9212906B2 (en) | 2011-10-31 | 2015-12-15 | Xi'an University Of Technology | Device for detecting axis coplanarity of orthogonal rotary shafts having built-in intersection and precision detecting method |
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Application publication date: 20100106 |