Summary of the invention
At the problem that prior art exists, the object of the present invention is to provide and a kind ofly need not any anchor clamps, eliminated any external force influence, reduce the solar energy thermal-power-generating catoptron eyeglass curved surface test macro of measuring error sample to be tested.
For achieving the above object, solar energy thermal-power-generating catoptron eyeglass curved surface test macro of the present invention, comprise test cabinet and the curvature measurement equipment that is used to measure lens curve curvature to be measured, the test solution identical with eyeglass proportion to be measured is arranged in the test cabinet, and eyeglass to be measured can be suspended in test with in the solution.
Further, described test cabinet is positioned at the bottom of described test macro.
Further, described curvature measurement equipment be positioned at described test cabinet directly over.
Further, described test cabinet comprises test pool, is provided with picnometer and tested glass supporting bracket in the test pool, and described test solution is housed in the test pool.
Further, described tested glass comprises 7 strong points with supporting bracket, is provided with pressure transducer on each strong point.
Further, described tested glass comprises with supporting bracket and is used to adjust the micromatic setting that described eyeglass to be measured is in the stress balance state.
Further, described curvature measurement equipment is measured the curvature measurement equipment of curvature of curved surface for adopting coordinate method or optical scanning method.
Further, described test macro also comprises transmission and opertaing device, and this transmission and opertaing device are positioned at a side of described test cabinet.
Further, described transmission and opertaing device comprise transmission motor, fixing glass sucker, test fixed pin, system control device, transmitting device firm banking; Described fixing glass all links to each other with motor with transmission with sucker, test fixed pin, system control device; Described eyeglass to be measured links to each other with motor with fixed pin with sucker and test by fixing glass, and system control device is controlled described eyeglass to be measured and transferred to described tested glass with on the supporting bracket.
The curvature measurement that the present invention is directed to bend glass is subjected to the external force effect and the problem of deformation effect measuring accuracy easily, adopted the method for eliminating external force to reach the purpose of accurate measurement, measuring system makes sample to be tested be in the stress balance state by the adjusting to the test cabinet condition, so that the curvature of curved surface that records can comparatively accurately reflect the actual curvature of curved surface.
Embodiment
As described in Fig. 1, Fig. 2, solar energy thermal-power-generating catoptron eyeglass curved surface test macro of the present invention comprises test cabinet 1, curvature measurement equipment 2, transmission and opertaing device 3.Wherein test cabinet 1 is positioned at the bottom of whole test system, for being fixed in the facility on ground, test cabinet 1 comprises test pool 4, be provided with picnometer 5 and tested glass supporting bracket 6 in the test pool 4, test solution is housed in the test pool 4, tested glass comprises equidistant arrangement support bar 7 with supporting bracket 6, is provided with high-precision pressure transducer 8 on the strong point of each support bar 7.Tested glass is used to adjust the micromatic setting (not shown) that eyeglass 9 to be measured is in the stress balance state with also being provided with on the supporting bracket.Test is a higher density solution with solution 12 in the test pool 4, and its proportion is identical with glass specimen proportion to be measured, makes eyeglass 9 to be measured can be suspended in test with in the solution; Curvature measurement equipment 2(such as three coordinate measuring machine, optical scanner etc.) be positioned at test pool 4 directly over, curvature measurement equipment 2 is measured the curvature measurement equipment of curvature of curved surface for adopting coordinate method or optical scanning method.Transmission and opertaing device 3 mainly are to be responsible for bend glass sample to be measured is sent to position to be measured in a side of test pool 4.
Transmission and opertaing device 3 comprise transmission motor 10, fixing glass sucker, test fixed pin, system control equipment 11, transmitting device firm banking; Fixing glass all links to each other with motor 10 with transmission with sucker, test fixed pin, system control equipment.Eyeglass 9 to be measured links to each other with motor 10 with transmission with fixed pin with sucker and test by fixing glass, and system control device is controlled eyeglass 9 to be measured and transferred to tested glass with on the supporting bracket 6.System control equipment 11 control transmission can be operated eyeglass 9 to be measured and move on all directions with the transmission of motor 10, mainly are to move at first in the horizontal direction directly over the test cabinet 1, move to tested glass then in vertical direction with on the supporting bracket 6.Little at moving process requirement rate travel homogeneity height and speed, especially sample is when vertical direction moves on the test cabinet support.
Tested glass in the test pool 4 is fixed on the baseplane, pond with supporting bracket 6, its arrangement mode is as shown in Figure 1: the shortest support bar 7 is positioned at the middle of test pool 4, be that in 7 support bars 7 in the present embodiment the 4th is positioned at the middle of test pool 4, other support bar equidistantly is arranged in its both sides respectively.Be arranged in the liquid level that height the highest support bar in both sides must be lower than pond solution, preferably be positioned at the position of half height of liquid level of solution.The height of each support bar 7 should be done the little adjustment of amplitude, is consistent with the bottom surface of bend glass to guarantee whole serial bracing frame peak, can not produce extra stress.Be connected with high-precision pressure sensor 8 on each support bar, be used to detect the pressure between eyeglass 9 to be measured and support when eyeglass 9 to be measured places on the support, when pressure is 0 or begins to measure when being substantially equal to 0.The used solution of measuring cell requires its proportion consistent with the proportion of glass to be measured in the test cabinet, and its pH value is preferably neutral, can not cause damage and destruction on any performance to glass to be measured.In addition, used solution is preferably chosen nontoxic solution in the measuring cell.
When curvature measurement equipment 2 is coordinate measuring machine, the application scanning measurement pattern converts measurement of curved surface to curved surface features line (as para-curve, hyperbolic curve etc.) measurement, is aided with accurate curvature (under the stress balance situation) numerical value that mathematics manipulation can obtain the curved surface of surveying; When curvature measurement equipment 2 is optical device, obtain corresponding curved surface three-dimensional point cloud by scanning to curved surface, be aided with accurate curvature (under the stress balance situation) numerical value that software processing can obtain sample to be tested.
Transmission and opertaing device 3 are divided into two parts.One is gearing, is aided with fixing glass by transmission with motor 10 and fixes eyeglass 9 to be measured with sucker, and eyeglass 9 to be measured is reached measuring position (shown in Figure 2) at a slow speed, can not produce any damage and destructions to eyeglass to be measured 9 surfaces simultaneously; The 2nd, control device, by transmission is guaranteed that with the control of motor 10 eyeglass 9 to be measured steadily at the uniform velocity transmits, the speed when requirement can be to the size of the used power of fixing eyeglass to be measured 9 and transmission is regulated.
The function of each ingredient:
1, test cabinet 1:
Function one: can pass through size under the situation of the used solution of selected test to the whole proportion of regulating and controlling solution of quantity of solvent.
Function two: the stressing conditions that the fine adjustment function of bracing frame can the auxiliary adjustment sample to be tested, guarantee that sample is in the stress balance situation.
2, curvature measurement equipment 2:
Function: the comparatively accurate curvature values of carrying out to obtain after certain mathematical processing or the software processing bend glass of surveying by the raw data that records.
3, transmission and opertaing device 3:
Function one: fixing sample to be tested and enable steady transmission.
Function two: when sample to be tested enters vertical direction when transmitting, especially enter the transmission behind the solution, can guarantee to be the stress balance state when sample is positioned on the bracing frame to transmit glass to be measured under the small speed to bracing frame.
This test macro two detailed processes in the course of the work
:
1, transport process:
Under the controlling of system control equipment 11; with sucker (the sucker position of drawing glass be glass hits exactly regional) eyeglass 9 to be measured is hung with motor 10 usefulness fixing glass by transmission and to rise to test pool upper limb that is higher than test cabinet and the position that is lower than the measuring equipment lower edge; then level at the uniform velocity be sent to test cabinet directly over; controlling sample afterwards vertically descends; keep less speed; after eyeglass 9 to be measured enters solution; continue to reduce transfer rate; require eyeglass 9 to be measured at the uniform velocity to be sent to tested glass with supporting bracket 6 with speed very slowly; after eyeglass 9 to be measured places; system control equipment 11 control suckers slowly break away from eyeglass 9 to be measured, and the applied external force in the time of should as far as possible avoiding breaking away from the described detach procedure has influence on eyeglass 9 to be measured.
2, test process:
Treat that system control equipment 11 control suckers break away from eyeglass 9 to be measured, and after eyeglass 9 to be measured is stablized, detect on the support bar 7 numerical value of pressure transducer 8 everywhere, if be 0 or be substantially equal to 0, in this case, think that eyeglass 9 to be measured is the stress balance state, can measure this moment to the curvature of eyeglass 9 to be measured; If numerical value is not 0, then corresponding support bar 7 is finely tuned operation, be 0 or be substantially equal to 0 up to sensor values, think that in this case eyeglass 9 to be measured is the stress balance state, can measure the curvature of eyeglass 9 to be measured.After measuring end, pipette the sample that measures by system control equipment 11 control suckers, and carry out the detection of next sample according to described method.
Working contents of the present invention is: the proportion numerical value of at first obtaining eyeglass 9 to be measured, prepare a kind of solution (for example sodium tungstate solution etc.) of identical proportion afterwards by this proportion numerical value, eyeglass 9 to be measured is placed this solution, then solution buoyancy can be offset the influence of eyeglass 9 self gravitations to be measured, can think that eyeglass 9 to be measured is in the situation of not stressing this moment, and the curvature values that obtains in this case is the accurate curvature values of bend glass.
Test is passed through picnometer 5 calibrations with the solution of solution employing with eyeglass 9 identical proportions to be measured, the proportion of solution.What the selection of solution did not have corrosive attack with avirulence, to glass is standard.Generally choose the aqueous metal salt of transition metal acid, it is neutral to guarantee that glass is not had corrosive attack that the pH value of for example sodium tungstate solution, and regulator solution makes it to be.Determine the proportioning of solution according to eyeglass to be measured 9 proportions of knowing in advance.The proportion that picnometer 5 is used for calibrating solution is in the situation of not stressing (buoyancy and gravity balance each other) to guarantee eyeglass 9 to be measured when testing in solution, eyeglass 9 to be measured will be suspended in test with in the solution this moment.The supporting bracket of eyeglass 9 to be measured when tested glass is test with supporting bracket 6, in the present embodiment, be provided with and glass between altogether 7 support bar 7(distribution situations see accompanying drawing), be connected to pressure transducer 8 on the strong point of each support bar 7, tested glass is used to bear the pressure that the gravity because of eyeglass 9 to be measured brings with supporting bracket 6.Require the degree of accuracy of pressure transducer higher, when the numerical value of sensor is 0 or when being infinitely close to 0, think that eyeglass 9 to be measured is in that not stress be the stress balance situation, this moment, the curvature of eyeglass 9 to be measured can be thought the actual curvature of glass.
The measurement pattern that curvature measurement equipment 2 adopts is: by some characteristic curves on the measurement curved surface and according to the quality that the evaluation of tested characteristic curve is reflected curved surface.This kind measurement pattern is simplified to measurement to curve with the measurement of curved surface, eyeglass to be measured 9 as solid, measure the characteristic curve on eyeglass 9 curved surfaces to be measured by coordinate method (method of direct coordinate or polar method etc.), generating method (mechanical generating method or electronics generate etc.), and obtain the accurate curvature values of eyeglass 9 to be measured with this characteristic curve.Usually adopt three coordinate measuring machine application scanning metering system to record the numerical value of curved surface in the practical application.By being carried out certain mathematical processing, the numerical value that measures to obtain accurate curvature values.A kind of measurement pattern in addition is to adopt equipment such as optical scanner that eyeglass to be measured 9 surfaces are measured, and the curved surface three-dimensional point cloud of acquisition sample, construct cad model by surface fitting software (as Imageware etc.) and 3D sculpting software UG etc. afterwards, and obtain the accurate curvature values of sample with this.
Advantage of the present invention is as follows:
1,, and designs corresponding detection system according to described method of testing at not having a kind of efficient ways to propose novel, method of testing accurately to the especially ultra-thin bend glass of bend glass in curvature test at present.
2, when testing, curvature is subject to self gravitation and extraneous test fixture pressure influence at the especially ultra-thin bend glass of bend glass and the situation that causes surf deform to make that test error is bigger, tested sample is positioned over makes state that sample is in stress balance in the identical solution of proportion to eliminate the influence of external force to curved surface, the curved surface of this moment is thought the distortion that does not produce because of the external force effect, and the curvature of measuring under this condition is the actual curvature value of bend glass.Therefore, the present invention can obtain the curvature value of suitable accurate curved face glass.
3, the measurement to thin layer of glass especially ultra-thin glass has proposed a kind of brand-new curvature method of testing, need not any anchor clamps, has eliminated the influence to any external force of sample to be tested, has reduced measuring error.
4, the test to the paired curve of test conversion of curved surface, applied mathematics is handled or simulation softward has been simplified measuring process, also improved the precision of measuring to a certain extent.
5, novel method of testing and integrated testability system design are short and sweet, and practical operation is also comparatively simple.