Method and device for control of article shape

FIELD: measuring engineering.

SUBSTANCE: method comprises setting the article to be controlled on the movable traverse gear having two extent of freedom, illuminating the surface of the article by light, receiving the light reflected from the surface of the article with the use of a photodetector, moving the article parallel to the X-axis, determining coordinates of the light spots on the photodetectors of the current values of the heights of the article shape, locking the position of the table, scanning the main section of the article shape, comparing it with the reference one , and determining the quality of the article shape. The main section is scanned by moving the article parallel to the Y-axis, when the traverse gear is in a position determined from the formula proposed. The device comprises unmovable horizontal base, vertical cantilever secured to the base, unit for measuring the article shape mounted on the vertical cantilever, two carriages that define a traverse gear and provided with the individual drives controlled by a computer, and pickup of linear movements. The first carriage moves parallel to the X-axis, and the second carriage is mounted on the first one and moves parallel Y-axis.

EFFECT: improved quality of control.

4 cl, 4 dwg

 

The invention relates to a measuring and control technique, and more particularly to methods and means for measurement and control of the profile of the end sections of the rotating bodies, and can be used for contactless automated inspection and sorting of bellows and other similar axisymmetric products with the wave profile.

When the control profile products using the method of visual assessment, contact and non-contact methods, which can be attributed methods light section and triangulation, shadow projection, interference and raster methods. In cases where it is not possible to directly measure the surface profile, surface make a mold and define the profile settings on the mould [1].

When the control surface profile enough solid materials using the method of "feeling", in which the test surface is sliding probe that monitors the surface profile. Witness the movement of the probe is converted into electrical or optical signals, which is constructed corresponding profilogram (function describing the dependence of the "high" profile from the coordinates of the corresponding point) [2, 3].

The known method of control of the profile of the product, namely, that place controlled product on a flat is m the turntable, move the electric contact probe tip in the direction of the test object, fixed points of electrical contact of the tips with controlled product, form and memorize corresponding electrical signals, stop moving contact of the meter completes the circuit controlled by the product of all the tips, return electric contact meter in its original state, turn table with controlled product at a given angle and repeat the above procedure until such time as the product will not make a complete revolution, compare the generated electrical signals with predetermined reference signals and the comparison result is judged on the profile of the controlled (axisymmetric) products [4].

From the same source [4] it is known a device for controlling the profile of a product containing the rotary table to accommodate controlled articles provided with actuator and sensor of angular displacements, the electric contact meter, made in the form of a clip spring-loaded in the axial direction and electrically insulated from each other tips, the ends of which lie in the same plane on the line in the form of an Archimedean spiral, axial mechanism reporting moving clips and blocks processing and displaying information.

Dan is haunted method and a corresponding device for its implementation based on the determination of removal of the test surface from a given surface. The definition of the distance is performed by direct contact of the meter profile with controlled product. It is known that the contact methods and means of control are characterized by low accuracy and reliability of testing results, low speed (capacity) and reliability, complexity achieve the full automation of control processes.

The closest to the proposed invention the technical essence is a way of controlling the profile of the product, which consists in scanning n cross section profile of the test object, at which place the test object on a movable two-coordinate table, is directed to the surface of the test object of the probing light, take another angular direction on a position-sensitive photodetectors reflected from the test surface, the light beam, move the test object using a two-coordinate table parallel to the X-axis of the coordinate system of a two-coordinate table is determined by measuring the coordinates of the light spots on a position-sensitive photodetector current values of the height profile of the test object, fix the corresponding position coordinates of two table, upon completion of the functional is another profile move controlled product using a two-coordinate table for a given step parallel to the Y axis of the coordinate system of a two-coordinate table and re-scan cross-section profile of the controlled products, compare scanned n cross section profile of the test object with the corresponding predetermined reference sections of the profile and the comparison result is judged on the profile of the controlled products [5].

This method is selected as the prototype is implemented using known from the same source [5] devices for controlling the profile of a product, comprising a fixed horizontal base, which is fixed to the vertical bracket, meter profile products, mounted on a vertical bracket, two carriages, forming a two-dimensional table and is supplied with each actuator is controlled from a personal computer (PC), and a linear displacement sensor whose outputs are connected to the first information input of the PC, to the second information inputs which are connected the outputs of the meter profile of the product, and apparatus for installation of a controlled product, the first carriage is placed on a stationary horizontal base and configured to move parallel to the X-axis of the coordinate system of a two-coordinate table, the second carriage is placed on the first carriage and arranged to move parallel to the Y axis of the coordinate system of a two-coordinate table, snap for mounting the test object placed on vtoro the carriage, while on the surface a stationary horizontal base made grooves for mounting snap-in and snap-in consists of two rails, rigidly fixed on the surface of a stationary horizontal base having longitudinal grooves, which include screws, with which the runners are attached to the screw lugs and the locking Cam, and two screw lugs, mounted in grooves on the surface of a stationary horizontal base, with holes for mounting screws made in the form of a longitudinal through grooves.

The main disadvantage of this method [5] and corresponding device for its implementation [5] is the inability to control the axisymmetric products (ends of the rotation bodies), for which a necessary condition when the control is to build cross section passing through the axis of symmetry [6].

The present invention is empowerment of the method and corresponding device by providing a control axisymmetric products (membranes, diaphragms and other similar products) with the wave profile.

To achieve the technical result of the proposed method of control the profile of the product, which consists in scanning a preliminary cross-sectional profile of the test object, at which place the controlled product is on a movable two-coordinate table direct on the surface of the test object of the probing light, take another angular direction on a position-sensitive photodetectors reflected from the test surface, the light beam, move the test object using a two-coordinate table parallel to the X-axis of the coordinate system of a two-coordinate table is determined by measuring the coordinates of the light spots on a position-sensitive photodetector current values of the height profile of the test object, fix the corresponding position coordinates of a two-coordinate table, scan the basic cross-section profile of the test object, compare it with a preset reference section profile of the product and the comparison result is judged on the profile of the controlled product, and the main scanning cross-section profile carry by moving the test object using a two-coordinate table parallel to the Y axis of the coordinate system of a two-coordinate table with the value of the coordinates of the two-coordinate table equal to

where Δ corresponds to the value with which the function

takes in the range of x1to xnthe minimum value;

xwithand x0respectively p is AdwareDelete and refined values of the coordinates of the symmetry axis of the test object in the coordinate system of a two-coordinate table;

Δ increment the coordinates of the axis of symmetry of the controlled product;

xwith=0,5(x1+xn);

x1and xn- coordinate (abscissa) of the position of the two-coordinate table respectively at the first and last measurements of the elevation profile of a product by scanning its preliminary section;

z(x) is the function describing the scanned pre-section profile of the test object.

In addition, the coordinates of the points of the main cross-section profile of the test object are compared with the corresponding coordinates of the specified reference-sectional profile of the product and the comparison result is judged on the profile of the test object.

Or on the main cross-section profile of the controlled products emit fragments, geometrical parameters which are compared with the geometric parameters of the corresponding fragments of the specified reference-sectional profile of the product and the comparison result is judged on the profile of the test object.

In order to achieve the technical result of the proposed device for controlling the profile of a product, comprising a fixed horizontal base, which is fixed to the vertical bracket, meter profile products, mounted on a vertical bracket, two carriages, forming a two-dimensional table and sabien the e each actuator, controlled from a personal computer (PC), and a linear displacement sensor whose outputs are connected to the first information input of the PC, to the second data outputs of which are connected the outputs of the meter profile products, and accessories for mounting the test object, and the first carriage is placed on a stationary horizontal base and configured to move parallel to the X-axis of the coordinate system of a two-coordinate table, the second carriage is placed on the first carriage and arranged to move parallel to the Y axis of the coordinate system of a two-coordinate table, snap for mounting the test object placed on the second carriage and is made in the form of a clip that enables the installation axis the symmetry of the controlled products parallel to the Z-axis of the coordinate system of a two-coordinate table, with the specified snap-formed from the plate with centering and mounting holes, clamping rings with mutually symmetrical grooves on the inner perimeter, and fixation of the clamping ring, and the plate has a cylindrical groove around the center hole for placement of the test object and the clamping ring.

The main features distinguishing the claimed method from the closest analogue (prototype), are:

- the main scanning cross-section profile of the controlled product;

- implementation of the specified actions by moving the test object using a two-coordinate table parallel to the Y axis of the coordinate system of a two-coordinate table;

the comparison of the obtained main profile with the specified reference cross-section profile of the product, the results of which are judged on the profile of the test object. Scanning of the main section of the profile is carried out by moving the test object using a two-coordinate table parallel to the Y axis of the coordinate system of a two-coordinate table with the value of the coordinates of the two-coordinate table equal to

where Δ corresponds to the value with which the function

takes in the range from x1to xnthe minimum value.

In addition,

- comparison of the coordinates of the main-sectional profile of the test object with the corresponding coordinates of the specified reference-sectional profile of the product, the results of which are judged on the profile of the controlled product;

- selection on the main cross-section profile of the test object fragments, geometrical parameters which are compared with the geometric parameters of the corresponding fragment the specified reference-sectional profile of the product, the results of which are judged on the profile of the test object.

The main features that distinguish the claimed device from the prototype are:

- run tooling for mounting the test object in the form of a clamp that ensures that the symmetry axis of the test object parallel to the Z-axis of the coordinate system of a two-coordinate table;

- presence in this snap-in plate with centering and mounting holes, clamping rings with vsaimnoponimanie grooves on the inner perimeter and fixation of the clamping ring;

- presence in the plate cylindrical grooves around the center hole for placement of the test object and the clamping ring.

The presence of these features in the claimed method and device ensure their compliance with the conditions of patentability of "novelty."

This comparison not only with the prototype, but also with other technical solutions in this and related fields of science and technology showed that the latter does not contain characteristics similar to the characteristics that distinguish the claimed technical solution from the prototype.

A new set of essential features for professionals is not obvious from the prior art, thus ensuring its compliance with the conditions of patentability "inventive step".

Proposed which my invention is illustrated in the drawings, showing:

in figure 1, 2 - structural diagram of the device control profile of the product;

figure 3 - design of tooling for mounting of a controlled product;

figure 4 - graphic materials, full scan (formation) of the profile.

The reference values are axisymmetric products with the wave profile, such as a corrugated membrane and aperture, defined as the cross section passing through the axis of symmetry [6]. Obviously, controlled axisymmetric products also needs to be measured (to form) a section passing through the axis of symmetry, which will be compared against the reference section. And this requires prior setting of one of the coordinate axis of symmetry of such products.

The proposed method is based on the fact that any arbitrary axisymmetric cross-section of the product (not necessarily passing through the axis of symmetry) is a symmetric function, and the axis of symmetry divides it into two equal parts. Analyzing the difference of the quantities characterizing these parts, it is possible with high accuracy to install one of the coordinate axis of symmetry of the product.

The method of control of the profile of the product is carried out in three stages in the following sequence.

A. Scanning (formation) of the preliminary section profile of the test object.

1. RA is meshaut controlled (axisymmetric) product on a movable two-coordinate table with a flat surface (Fig.1-3).

2. Direct on the surface of the test object of the probing light.

3. Take another angular direction on a position-sensitive photodetectors diffuse-reflected from the test surface light emission.

4. Move the test object using a two-coordinate table parallel to the X-axis of the coordinate system of a two-coordinate table (at the constant at ywithtwo-coordinate table in which the generated profile section will pass approximately through the axis of symmetry of the test object, see figure 4).

5. Determined by measuring the coordinates of the light spots on a position-sensitive photodetector current values of the height profile of the test object.

6. Record the corresponding coordinates (x,y) position of the two-coordinate table and thereby receive a preliminary profilogram function z(x) controlled axisymmetric products.

7. In the resulting function z(x) are the coordinates of x1and xnposition two of the table respectively at the first and last measurement of the height profile of the product (figure 4).

8. Determined according to the formula xwith=0,5(x1+xnpreliminary coordinate value of the symmetry axis of the test object.

9. Calculate according to the formula x 0=xwith+Δ the value of the coordinates of the symmetry axis of the test object, where Δ is the value at which the function

takes in the range of x1to xnthe minimum value. B. Scanning (formation) of the main cross-section profile of the test object.

1. Re-perform steps 2-3, carried out with scanning preview-sectional profile of the test object.

2. Move the test object using a two-coordinate table parallel to the Y axis of the coordinate system of a two-coordinate table with the value of the coordinates of the two-coordinate table is equal to x0forming in the above-mentioned basic cross-section profile of the test object z(y).

C. Comparison of the main cross-section profile of the test object with the specified reference section of the profile.

1. Compare the basic cross-section profile of the test object with the specified reference cross-section profile of the product and the comparison result is judged on the profile of the controlled products

2. This comparison can be performed:

(a) by comparing the coordinates of the scanned points of the main cross-section profile of the test object with the corresponding coordinates of the specified reference-sectional profile of the product, the result is which is judged on the profile of the test object.

b) by allocating scanned the main cross-section profile of the test object fragments, geometrical parameters which are compared with the geometric parameters of the corresponding fragments of the specified reference-sectional profile of the product, the results of which are judged on the profile of the test object. As fragments of the main and reference sections of the profile segments can be straight lines, arcs, etc. and as their geometrical parameters: segment - length, angle, etc. for arc - their radius, length, etc.

This procedure is implemented hardware and software by the device described below.

The device comprises (1, 2) stationary horizontal base 1, which is fixed to the vertical bracket 2, meter 3 profile products, rigidly mounted on the vertical bracket 2, the two carriages 4 and 5, forming a two-dimensional table, and is provided with each actuator 6 is controlled from a personal computer (PC) 7, and the sensor 8 linear displacements, the outputs of which are connected to the first information input 9 PC 7, to the second information input 10 which is connected to the outputs 11 meter 3 profile of the product, and snap 12 for mounting the test object 13 (2).

The first carriage 4 is placed on stills is ignom horizontal base 1 and is arranged to move parallel to the X-axis of the coordinate system of a two-coordinate table. The second carriage 5 is placed on the first carriage 4 and is arranged to move parallel to the Y axis of the coordinate system of a two-coordinate table. Snap 12 for mounting the test object 13 is placed on the second carriage 5 and is made in the form of a clamp that ensures that the symmetry axis of the test object 13 parallel to the Z-axis of the coordinate system of a two-coordinate table (1, 2).

Snap-12 (figure 3) is formed from the plate 14 with the Central 15 and fasteners 16 holes of the clamping ring 17 with mutually symmetrical grooves 18 on the inner perimeter and the elements 19 of the fixing of the clamping ring 17 made in the form of flat springs. When this plate 14 has a cylindrical grooves 20 and 21 around the Central hole 15 for placing the test object 13 and the clamping ring 17.

Meter 3 profile of the product (figure 2) contains the source of a narrow light beam, such as laser 22, the multi-element position-sensitive photodetector, for example photolyase 23, a lens 24 mounted with the possibility of a triangulation optical communication photolyase 23 with the laser 22 through the surface of the test object 13, the block selection signal 25 and the scanner 26 and the imaging unit 27 of the code. Information input shaper 27 through the block 25 is connected to the output photolyase 23, and the clock inputs of the formation of the indicator 27 - to the outputs of the block 26 of the scanner, while the outputs of the driver 27 outputs are 11 gauge 3 profile of the product.

Figure 4,panel a shows the trajectory of the laser beam on the test surface 13, respectively, when scanning a preliminary 28 and 29 main sections of the profile, and figure 3,b shows profilogram 30 - function z(x), obtained by scanning a preliminary cross-sectional profile of the test object 13.

The results of information processing in the PC 7 can be issued on the monitor 31 and the printer 32 (Fig 1, 2).

The device operation is based on the triangulation method for measurement by scanning the specified sections of the test object by a laser beam. Scan by automatically moving the product 13 in a predetermined path.

At the first stage of operation of the device is the scanning stage (formation) of the preliminary section - fix-controlled axial-symmetric product 13 by snap 12 on the movable two-coordinate table formed by the carriages 4 and 5. For this test object 13 is installed in the cylindrical groove 20 of the plate 14, the press ring 17 is placed in the groove 21 and is fixed in this position by the elements 19. The plate 14 using the holes 16, fixed to the carriage 5.

Then sent to the surface in a controlled manner what about the product 13 of the probe light emission of the laser 22 and receive from the other angular direction by lens 24 onto a position-sensitive photodetectors line 23 diffuse-reflected from the surface of the light the radiation. While the presence of mutually symmetric grooves 18 of the ring 17 allows the laser beam to reach the peripheral areas of the test object 13.

According to the control signals from the PC 7 start the drive 6 of the carriage 4 moving a two-dimensional table with controlled product 13 parallel to the axis X at constant ywithtwo-coordinate table, at which the laser beam moves along the path 28 (figure 4).

Obviously, to increase the accuracy, it is necessary that the value of ywiththe absolute value was minimal. In other words, the cross section should be located as close as possible to the axis of symmetry of the product 13.

In the process of moving the test object 13 is determined by measuring the coordinates of the light spots on a position-sensitive photodetectors line 23 current values of the height z(x) cross-section of his profile. To do this, produce an electronic scan photolyase 23 using block 26 sweep, and the output signals of the elements photolyase 23 come through the block 25 selection signal to the information input of the shaper 27 code. To another input of the shaper 27 is continuously served heartbeats unit 26 of the scanner.

In accordance with the principle of triangulation, the distance change from 3 meter to the wave surface 13 being is it to change the coordinates of the reflected light spot on photolyase 23 and accordingly the formation of the outputs of the shaper 27 codes values which are proportional to values of z(x). Signals corresponding z(x), with outputs 11 is entered into the memory of the PC 7.

Simultaneously the signals from the outputs of the sensors 8 PC 7 are fixed respective position coordinates of a two-coordinate table.

After the scan is complete (pass) a laser beam across the surface of the test object 13 in the PC 7 is recorded information (smpeg,6) preliminary cross-section profile of the product 13 in the form of profilogram function z(x).

In this function, it is difficult to find the coordinates of the peripheral points of the product 13, which may be calculated coordinate its symmetry axis.

So programmatically in the PC 7 is performed (taking into account [7]) the establishment of the provisional values of xwiththe axis of symmetry of the product 13: xwith=0,5(x1+xn).

A more accurate value of the coordinate (abscissa) axis of symmetry of the product 13 is different from the xwithat some value Δ. The latter can be determined by analyzing the difference of the quantities characterizing the "part" of the function z(x)located on opposite sides of the pre-xwith.

Implementation is also carried out in software in the PC 7 device by finding the interval from x1to xn(at varying values Δ) minimum options and:

Then the updated value of the coordinates of the symmetry axis of the test object 13 will be determined by the formula: x0=xc+Δ.

It is obvious that the value of D varies in the range: Δ≤0,5(xn-x1).

In the second stage of operation of the device is the scanning stage (formation) of the principal section on control signals from the PC 7 start the drive 6 of the carriage 5, the moving two-dimensional table with controlled product 13 parallel to the Y axis at a constant coordinate of x0two-coordinate table. When this laser beam is moved along the trajectory 29 (figure 4,a).

As a result, in the PC 7 device is formed the basic cross-section profile of the test object z(y).

In the third stage of operation of the device programmatically in the PC 7 is a comparison of the main cross-section profile of the test object 13 with the set reference section of the profile.

There are several options for implementing this comparison.

In the first embodiment in the PC 7, the coordinates of the points of the base-sectional profile of the test object are compared with the corresponding coordinates of the specified reference-sectional profile of the product, the results of which are judged on the profile of the test object.

The second option is also software on the primary section p is ofile controlled products emit fragments, geometrical parameters which are compared with the geometric parameters of the corresponding fragments of the specified reference-sectional profile of the product, the results of which are judged on the profile of the test object. As fragments of the main and reference sections of the profile segments can be straight lines, arcs, etc. and as their geometrical parameters: segment - length, angle, etc. for arc - their radius, length, etc.

The choice of comparison is determined by the characteristics of the controlled product and the requirements of the process control.

Set the reference section of the article profile can be formed, for example, in the PC by pre-measurement profile on the same device.

Thus, the proposed set of essential features of the invention allows to extend the capabilities of the method and corresponding device by providing a control profile axisymmetric products (membranes, diaphragms and other similar products).

The proposed method and device for its implementation introduced in one of the enterprises, Chelyabinsk.

SOURCES USED

1. Precision and production control engineering: Guide/ BEA and other pod obshch. Red. Accuta etc. - L: mechanical engineering, 1983, s-352.

3. Devices for non-destructive testing of materials and products. The Handbook. 2 kN. Edited Via. KN. 1. M: mechanical engineering, 1976, p.74-75, Fig. 14.

4. Auth. St. USSR №1670356 Device to control the flatness of the annular surfaces, the IPC5G 01 5/28, BI No. 30, 1991.

5. Certificate of utility model of the Russian Federation No. 5644. Optoelectronic system for measuring the profile molds. IPC6G 01 11/24. BIPM, 1997, No. 12 (prototype).

6. Measurement in industry. Ref. ed. 3 kN. KN. 2. Methods of measurement and instrumentation: Tr/Under the editorship of Proposa P. - 2nd ed., revised and enlarged extra - M.: metallurgy, 1990, s.255-256, is-14.

7. Korn G., Korn T. Handbook of mathematics for scientists and engineers. Definitions. Theorem. The formulas. TRANS. from English./ Under the General Ed. Igirimbabazi. M.: Nauka, 1968, p.54, f-La 2.1-5.

1. The method of control of the profile of the product, which consists in scanning a preliminary cross-sectional profile of the test object, at which place the test object on a movable two-coordinate table, is directed to the surface of the test object of the probing light, take another angular direction on a position-sensitive photodetectors reflected from the surface of the con is controlled products light radiation, move the test object using a two-coordinate table parallel to the axis "X" coordinate system of a two-coordinate table is determined by measuring the coordinates of the light spots on a position-sensitive photodetector current values of the height profile of the test object, fix the corresponding position coordinates of a two-coordinate table, scan the basic cross-section profile of the test object, compare it with a preset reference section profile of the product and the comparison result is judged on the profile of the test object, and scanning of the main section of the profile is carried out by moving the test object using a two-coordinate table parallel to the axis "Y" coordinate system of a two-coordinate table with the value of the coordinates of the two-coordinate table is equal to

x0=xwith+Δ,

where Δ corresponds to the value with which the functiontakes in the range of x1to xnthe minimum value;

xwithand x0accordingly the preliminary and refined values of the coordinates of the symmetry axis of the test object in the coordinate system of a two-coordinate table;

Δ increment the coordinates of the axis of symmetry of the controlled product;

xwith=0,5(x1 +xn),

x1and xncoordinates ([abtsissy]) position two-coordinate table respectively at the first and last measurement of the elevation profile of a product by scanning its preliminary section;

z(x) is the function describing the scanned pre-section profile of the test object.

2. The control method according to claim 1, in which the coordinates of the points of the main cross-section profile of the test object are compared with the corresponding coordinates of the specified reference-sectional profile of the product and the comparison result is judged on the profile of the test object.

3. The control method according to claim 1, in which the main cross-section profile of the controlled products emit fragments, geometrical parameters which are compared with the geometric parameters of the corresponding fragments of the specified reference-sectional profile of the product and the comparison result is judged on the profile of the test object.

4. Device for controlling the profile of a product, comprising a fixed horizontal base, which is fixed to the vertical bracket, meter profile products, mounted on a vertical bracket, two carriages, forming a two-dimensional table and is supplied with each actuator is controlled from a personal computer (PC), and the sensor is inany movements, the outputs of which are connected to the first information input of the PC, to the second data outputs of which are connected the outputs of the meter profile products, and accessories for mounting the test object, and the first carriage is placed on a stationary horizontal base and configured to move parallel to the axis "X" coordinate system of a two-coordinate table, the second carriage is placed on the first carriage and arranged to move parallel to the axis "Y" coordinate system of a two-coordinate table, snap for mounting the test object placed on the second carriage and is made in the form of a clamp that ensures that the symmetry axis of the test object parallel to the axis "Z" coordinate system two table, with the specified snap-formed from the plate with centering and mounting holes, clamping rings with mutually symmetrical grooves on the inner perimeter and fixation of the clamping ring, and the plate has a cylindrical groove around the center hole for placement of the test object and the clamping ring.



 

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2 cl, 1 dwg

FIELD: measuring equipment.

SUBSTANCE: method includes lighting object by collimated parallel beam of coherent monochromatic light, directed at angle of raising of screw surface relatively to object axis, as which object with screw surface is used, receiving optical image of its profile and following processing of received profile of image to perform further calculations of its parameters, while lighting of object is performed concurrently on two portions by collimated parallel beams of coherent monochromatic light, directed at raising angle of screw surface relatively to object axis, while these two beams are positioned symmetrically relatively to longitudinal axis of object and two images of said profile are received, mutual position of separate elements in which does not depend on presence of vibrations and shaking.

EFFECT: higher quality.

1 dwg, 1 ex

FIELD: the invention refers to measuring technique.

SUBSTANCE: the mode of measuring the form of an object includes formation of a light line on the surface of the object with the aid of the light-emitting system lying in the preset cross-section of the object, getting the image of the light line, its processing and definition of the coordinates of the profile of the cross-section of the object. AT that collateral light lines are formed on the surface by turns with the aid of two light-emitting systems illuminating the surface in preset cross-section of the object at different angles in its every point, images of light lines are received. On each of them sites are revealed. A resultant image is compiled out of the images of the indicated sites. According to this resultant image the coordinates of the profile of the cross-section of the object are determined. The arrangement for measuring the form of the object has a light-emitting system optically connected with a photoreceiver and a computing unit. It also has one additional light-emitting system optically connected with a photoreceiver and a commuting unit connected with its input to the computing unit, and with its output - with every light-emitting system. Optical axles of light-emitting system are placed in one plane and located to each other at an angle equal 5-800.

EFFECT: the invention increases accuracy of measuring by way of excluding the distortions of the zone of influence on the results of measuring.

13 cl, 5 dwg

FIELD: measuring instruments.

SUBSTANCE: the interferometer for controlling of the form of prominent, concave spherical and flat surfaces of large-sized optical components has a source of monochromatic radiation, a collimator and an objective, one after another located a beam divider, a flat mirror and an aplanatic meniscus with a reference surface and also an observation branch located behind the beam divider in beam return and a working branch consisting out of a spherical mirror with a compensator which form a focusing system. Depending of the form of a controlled surface focusing of the working branch of the interferometer is executed at replacing the compensator and the basic block of the interferometer which has an illuminating branch. A beam divider, a flat mirror, an aplanatic meniscus and an observation branch relative to a fully stabilized spherical mirror along an optical axis on such a distance at which the beams reflected from the spherical mirror fall on the controlled surface transversely to its surface.

EFFECT: expansion of nomenclature of controlled surfaces, decreasing large-sized dimensions of the interferometer.

2 cl, 3 dwg

FIELD: measuring engineering.

SUBSTANCE: method comprises setting the article to be tested on the working table, moving the nonflatness meter, determining the amplitude of nonflatness, and determining coefficients of nonflatness. The device comprises source of light, multielement photodetector, objective, and computer.

EFFECT: enhanced reliability.

5 cl, 7 dwg

FIELD: measuring arrangements.

SUBSTANCE: device comprises unmovable base provided with the first cantilever, two carriages provided with drives controllable with a computer, pickup of linear movements, arrangement for mounting blade and first measuring channel connected with the computer. The first carriage is mounted on the unmovable base and is made for permitting movement parallel to the X-axis. The first measuring passage is defined by the optoelectronic head and units secured to the unmovable base, third carriage provided with an actuator controlled by a computer and pickup of linear displacements, second measuring channel, first and scone markers of the blade with actuating members controlled by a computer, arrangement setting the blade mounted on the first carriage and made for permitting rigid orientation of the blade in the vertical plane, second and third carriages arranged on the first and second cantilevers, respectively, and made for permitting movement parallel to the Z-axis, first and second markers of the blade, fiber optic heads of the first and second measuring channels arranged on the second and third carriages from the both sides of the study blade. The objectives of the fiber optic heads are mounted for permitting triangulation link of the photodetector with the sourced through the blade surface of the blade to be tested.

EFFECT: enhanced efficiency.

6 cl, 7 dwg

FIELD: railway transport; instrument technology.

SUBSTANCE: proposed wear checking system contains optical receiving projection system and converting-and-calculating unit. It includes also car position pickup and car counter whose outputs are connected to inputs to inputs of converting-ands-calculated unit. Optical receiving projection system consists of sets of stereo modules. Rigid structure of each module includes two CCD television cameras and lighting unit. Outputs of stereomodules are connected to corresponding inputs of converting-and-calculating unit. Stereomodules are rigidly installed relative to each other.

EFFECT: enlarged operating capabilities.

3 cl, 2 dwg

The invention relates to information-measuring technique and can be used for contactless measurement of geometrical parameters of the compressor, turbine blades, molds, moulds and tooling in the manufacture of gas turbine engines (GTE), templates, membranes, machining tool, etc

The invention relates to a geodetic instrument and can be used to control the straightness of suspensions of fuel assemblies for nuclear power plants with RBMK-type reactors

FIELD: railway transport; instrument technology.

SUBSTANCE: proposed wear checking system contains optical receiving projection system and converting-and-calculating unit. It includes also car position pickup and car counter whose outputs are connected to inputs to inputs of converting-ands-calculated unit. Optical receiving projection system consists of sets of stereo modules. Rigid structure of each module includes two CCD television cameras and lighting unit. Outputs of stereomodules are connected to corresponding inputs of converting-and-calculating unit. Stereomodules are rigidly installed relative to each other.

EFFECT: enlarged operating capabilities.

3 cl, 2 dwg

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