Device for measuring surfaces macro roughnesses

FIELD: measuring equipment.

SUBSTANCE: device for measuring macro roughnesses surfaces can be used in hydropower control macro roughnesses, taper and deviation from the horizontal plane mirror surfaces disc thrust bearings of hydroelectric. Device for measuring macro roughnesses surfaces, comprising mounted horizontally and in parallel above one another rigid rectangular plates fixed together by vertical uprights disposed on the outer side of each plate at the corners three support adjustable legs installed at the inner side of the bottom plate two sensor inclination angle, the axes sensitivity are mutually perpendicular and parallel to the adjacent side of the plate and fixed by means of removable alignment ring on one of the plates with its outer side magnet, the center of which is located inside the right-angled triangle formed by the three bearing adjustable feet at the median from the vertex of the right angle.

EFFECT: technical result is to increase the accuracy of measurement macro roughnesses by measuring the angular displacement in the coordinate system associated with the survey surface, expanding the functionality of the device.

1 cl, 1 dwg

 



 

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The invention relates to the control of the tilt angles of the object and can be used in their orientation in space

FIELD: measurement equipment.

SUBSTANCE: invention relates to measurement equipment, in particular, to devices for measurement of profile of surfaces of low-modular viscoelastic sheet materials of light industry, namely, man-made and natural leathers, etc. A device to detect profile of materials in deformed condition, comprising a base, a counting unit, a locating element, installed as capable of rotation around its axis, differing by the fact that the locating element is made in the form of a semi-cylinder with a hollow semi-cone and two limiting plates to fix a sample; the device comprises an additional counting unit fixed on the semi-cylinder, to detect bending radius of the investigated sample, arranged in parallel to the semi-cone guide, at the same time the main counting unit is made as combined, capable of displacement along the axis of rotation of the locating element and comprises a strain gauge motion sensor and a digital optical microscope.

EFFECT: device makes it possible to study hidden defects of natural leather and man-made materials, to determine variation of material relief under bending deformation.

2 cl, 1 dwg

FIELD: measurement equipment.

SUBSTANCE: invention relates to measurement equipment, in particular, to facilities for control of relief and surface properties of samples with the help of sclerometers, and may be used to assess variation of surface properties along the scanning path. For this purpose they perform scanning of the controlled surface more than once with different extent of probe approaching to the controlled surface with simultaneous production of data on spatial and power parameters of scanning, and sample parameters are defined using them, which characterise relief and/or properties of the sample surface, extent of probe action at the surface or surface layers of the sample, and also value of residual deformation is defined by difference of produced values of spatial and power parameters. At the same time the first scanning is carried out with a load at the probe, not causing plastic deformation of the surface, and they assess vertical movements of the probe in process of scanning, on the basis of which they build a profilogram of the controlled surface and determine parameters of its roughness, then the probe is returned into the initial position, the probe is inserted into the surface layer for the required depth, reflecting volume properties of the surface layer, due to application of the permanent normal load, and the second scanning is performed, and vertical movements of the probe are assessed, on the basis of which they build the curve of the support surface and assess its characteristics, and also define the distribution of hardness of the surface layer along the scanning path.

EFFECT: expansion of functional capabilities of assessment of surface layer characteristics and production of more correct data reflecting volume properties of surface layers.

2 dwg

FIELD: physics.

SUBSTANCE: roller for measuring flatness defects of a strip has force transducers built into the lateral surface of the roller with formation of measurement sections and coatings for the force transducers which are flush with the surface of the roller. The coatings are surrounded by a gap for movement with formation of a clearance from the force transducers. The measurement sections are closed by one or more metal films adhesively connected to the surface of the roller. Also the measurement roller has an additional shell.

EFFECT: increased strength and wear-resistance of the measurement roller, prevention of shear deformation in coatings which form measurement sections of the roller.

9 cl, 8 dwg

FIELD: physics.

SUBSTANCE: method of controlling surface roughness involves probing the surface with laser radiation and recording photoluminescence intensity using photosensitive devices. The rough surface is covered with a layer of nanoparticles. The detected information feature used is characteristic photoluminescence of these particles, induced by the probing laser radiation. Roughness of the surface is controlled by changing the nature of photoluminescence intensity when the angle between the axis of the probing radiation and the normal to the rough surface is changed.

EFFECT: integral evaluation of roughness, local evaluation of the section of interest and automation of the control process.

7 cl, 6 dwg, 2 tbl

FIELD: measurement technology.

SUBSTANCE: this method is based on the use of coherent electromagnetic radiation. Under this technology optical nonlinearity of the surface with microrelief and reference specimen are created. Measurement of the surface microrelief is made by the analysis of the interferences obtained as a result of interaction between nonlinear optical surface reflected from the microrelief of the giant second harmonic and giant second harmonic reflected from the surface of the reference specimen. Unambiguity of the microrelief altitude measurement is ensured by the analysis of the interferences of the derived part of radiation and radiation reflected from the surface with microrelief. Optical nonlinearity of the surfaces with microrelief and reference specimen can be created by the method of chemical chemical etching of the surfaces or by their covering with metal nanoparticles or semiconductor particles.

EFFECT: improvement of the accuracy and unambiguity of the measurements of the microrelief altitude with sharp drop of altitudes.

3 cl, 2 dwg

FIELD: physics, measurement.

SUBSTANCE: invention may be used for contactless detection of quality in items having medium and low classes of purity. Detection of surface roughness parametres is carried out by digital survey of investigated surface or its area by digital optical device with resolution of at least 3 megapixels at angle of illumination of 15, 45, 75 with normal location of lens to investigated surface. Digital pictures are sent to computer, pictures are processed and analysed on the basis of calculation of statistical criteria of each picture. Mean-square deviation is found between statistical criteria, which is correlated with arithmetical mean deviation of roughness sample Ra. Restoration coefficient k is determined. Electronic model of surface microrelief is built by transformation of picture pixels into three-dimensional coordinates, which are used for calculation of geometric parametres of surface roughness.

EFFECT: higher efficiency of surface roughness parametres measurement.

2 cl, 14 dwg, 8 tbl

FIELD: physics, measurements.

SUBSTANCE: invention is related to the field of metering equipment, namely to measurement of moving surface parametres. Charge of explosive substance is initiated with the help of lens or detonation distributor on surface, which is speeded up by explosion products to velocity that causes glow of shock wave in front of it. Receiver of the same shape closed by screen is installed on motion route. Two or more groups of electro-optical detectors are installed in receiver along normal line to moving surface on different bases from initial position of surface. Surface of screen inverted to electro-optical detectors in process of motion interacts with their ends, besides, at the same time electric and light signals are generated, which are supplied to recorders. Recorders measure time of moving surface approach to the end of every detector. Diversity is defined by difference of times of electric and light signals in every group of detectors.

EFFECT: makes it possible to improve reliability and accuracy of measurements of time intervals in complex expensive experiments.

4 dwg

FIELD: measurement of planeness of strip in reel shaft of hot strip rolling mill.

SUBSTANCE: proposed method includes measurement of planeness in reel shaft of hot rolling mill; reel shaft is provided with movable and immovable strips between pulling device and reel; hot strip is fed to reel through its shaft by means of roller table and pulling roller of pulling device; reel is provided with drum, hold-down rollers and end guides; roller for measurement of planeness is closed in reel shaft turned inside guide strip. Moving roller used for measurement of planeness has working position at which hot strip passes around roller used for measurement of planeness retaining approximately constant wrapping angle α and lowered position; reel shaft is provided with swivel guide strip closing the roller used for measurement of planeness.

EFFECT: enhanced economical efficiency; enhanced protection of roller in lowered position.

15 cl, 9 dwg

The invention relates to measurement devices, and in particular to methods for measuring the shape and movements of the object surface

FIELD: measurement of planeness of strip in reel shaft of hot strip rolling mill.

SUBSTANCE: proposed method includes measurement of planeness in reel shaft of hot rolling mill; reel shaft is provided with movable and immovable strips between pulling device and reel; hot strip is fed to reel through its shaft by means of roller table and pulling roller of pulling device; reel is provided with drum, hold-down rollers and end guides; roller for measurement of planeness is closed in reel shaft turned inside guide strip. Moving roller used for measurement of planeness has working position at which hot strip passes around roller used for measurement of planeness retaining approximately constant wrapping angle α and lowered position; reel shaft is provided with swivel guide strip closing the roller used for measurement of planeness.

EFFECT: enhanced economical efficiency; enhanced protection of roller in lowered position.

15 cl, 9 dwg

FIELD: physics, measurements.

SUBSTANCE: invention is related to the field of metering equipment, namely to measurement of moving surface parametres. Charge of explosive substance is initiated with the help of lens or detonation distributor on surface, which is speeded up by explosion products to velocity that causes glow of shock wave in front of it. Receiver of the same shape closed by screen is installed on motion route. Two or more groups of electro-optical detectors are installed in receiver along normal line to moving surface on different bases from initial position of surface. Surface of screen inverted to electro-optical detectors in process of motion interacts with their ends, besides, at the same time electric and light signals are generated, which are supplied to recorders. Recorders measure time of moving surface approach to the end of every detector. Diversity is defined by difference of times of electric and light signals in every group of detectors.

EFFECT: makes it possible to improve reliability and accuracy of measurements of time intervals in complex expensive experiments.

4 dwg

FIELD: physics, measurement.

SUBSTANCE: invention may be used for contactless detection of quality in items having medium and low classes of purity. Detection of surface roughness parametres is carried out by digital survey of investigated surface or its area by digital optical device with resolution of at least 3 megapixels at angle of illumination of 15, 45, 75 with normal location of lens to investigated surface. Digital pictures are sent to computer, pictures are processed and analysed on the basis of calculation of statistical criteria of each picture. Mean-square deviation is found between statistical criteria, which is correlated with arithmetical mean deviation of roughness sample Ra. Restoration coefficient k is determined. Electronic model of surface microrelief is built by transformation of picture pixels into three-dimensional coordinates, which are used for calculation of geometric parametres of surface roughness.

EFFECT: higher efficiency of surface roughness parametres measurement.

2 cl, 14 dwg, 8 tbl

FIELD: measurement technology.

SUBSTANCE: this method is based on the use of coherent electromagnetic radiation. Under this technology optical nonlinearity of the surface with microrelief and reference specimen are created. Measurement of the surface microrelief is made by the analysis of the interferences obtained as a result of interaction between nonlinear optical surface reflected from the microrelief of the giant second harmonic and giant second harmonic reflected from the surface of the reference specimen. Unambiguity of the microrelief altitude measurement is ensured by the analysis of the interferences of the derived part of radiation and radiation reflected from the surface with microrelief. Optical nonlinearity of the surfaces with microrelief and reference specimen can be created by the method of chemical chemical etching of the surfaces or by their covering with metal nanoparticles or semiconductor particles.

EFFECT: improvement of the accuracy and unambiguity of the measurements of the microrelief altitude with sharp drop of altitudes.

3 cl, 2 dwg

FIELD: physics.

SUBSTANCE: method of controlling surface roughness involves probing the surface with laser radiation and recording photoluminescence intensity using photosensitive devices. The rough surface is covered with a layer of nanoparticles. The detected information feature used is characteristic photoluminescence of these particles, induced by the probing laser radiation. Roughness of the surface is controlled by changing the nature of photoluminescence intensity when the angle between the axis of the probing radiation and the normal to the rough surface is changed.

EFFECT: integral evaluation of roughness, local evaluation of the section of interest and automation of the control process.

7 cl, 6 dwg, 2 tbl

FIELD: physics.

SUBSTANCE: roller for measuring flatness defects of a strip has force transducers built into the lateral surface of the roller with formation of measurement sections and coatings for the force transducers which are flush with the surface of the roller. The coatings are surrounded by a gap for movement with formation of a clearance from the force transducers. The measurement sections are closed by one or more metal films adhesively connected to the surface of the roller. Also the measurement roller has an additional shell.

EFFECT: increased strength and wear-resistance of the measurement roller, prevention of shear deformation in coatings which form measurement sections of the roller.

9 cl, 8 dwg

FIELD: measurement equipment.

SUBSTANCE: invention relates to measurement equipment, in particular, to facilities for control of relief and surface properties of samples with the help of sclerometers, and may be used to assess variation of surface properties along the scanning path. For this purpose they perform scanning of the controlled surface more than once with different extent of probe approaching to the controlled surface with simultaneous production of data on spatial and power parameters of scanning, and sample parameters are defined using them, which characterise relief and/or properties of the sample surface, extent of probe action at the surface or surface layers of the sample, and also value of residual deformation is defined by difference of produced values of spatial and power parameters. At the same time the first scanning is carried out with a load at the probe, not causing plastic deformation of the surface, and they assess vertical movements of the probe in process of scanning, on the basis of which they build a profilogram of the controlled surface and determine parameters of its roughness, then the probe is returned into the initial position, the probe is inserted into the surface layer for the required depth, reflecting volume properties of the surface layer, due to application of the permanent normal load, and the second scanning is performed, and vertical movements of the probe are assessed, on the basis of which they build the curve of the support surface and assess its characteristics, and also define the distribution of hardness of the surface layer along the scanning path.

EFFECT: expansion of functional capabilities of assessment of surface layer characteristics and production of more correct data reflecting volume properties of surface layers.

2 dwg

FIELD: measurement equipment.

SUBSTANCE: invention relates to measurement equipment, in particular, to devices for measurement of profile of surfaces of low-modular viscoelastic sheet materials of light industry, namely, man-made and natural leathers, etc. A device to detect profile of materials in deformed condition, comprising a base, a counting unit, a locating element, installed as capable of rotation around its axis, differing by the fact that the locating element is made in the form of a semi-cylinder with a hollow semi-cone and two limiting plates to fix a sample; the device comprises an additional counting unit fixed on the semi-cylinder, to detect bending radius of the investigated sample, arranged in parallel to the semi-cone guide, at the same time the main counting unit is made as combined, capable of displacement along the axis of rotation of the locating element and comprises a strain gauge motion sensor and a digital optical microscope.

EFFECT: device makes it possible to study hidden defects of natural leather and man-made materials, to determine variation of material relief under bending deformation.

2 cl, 1 dwg

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