40results about How to "Suitable for online measurement" patented technology

The invention discloses a device and a method for measuring coaxiality. The device includes a light source and a beam splitting prism one placed on the light source exit surface. A lens one, a lens two and a beam splitting prism two are sequentially arranged under the beam splitting prism one. A detected axis 1 is arranged below the beam-splitting prism 2, and a plane mirror placed at a 45° angle is arranged on the left side of the beam-splitting prism 2, and a detected axis 2 is arranged below the plane mirror; a CCD detector is arranged above the beam-splitting prism 1, so The CCD detector is electrically connected to the processor, and the processor is electrically connected to the computer. The method includes: 1) building an optical path; 2) calibrating the CCD detector; 3) adjusting the optical path; 4) imaging the reflected light trajectory of the detected axis 1 and axis 2 on the CCD detector and outputting it to the computer through the processor; 5) computer Carry out trajectory fitting and calculate the concentricity value. Its principle is simple, strong implementability, good stability, with the advantages of automation and intelligence, and can realize on-line measurement of coaxiality.

The invention discloses a seamless table tennis ball bounce performance checking and selecting method which is implemented using an inclined surface bounce and collision detection equipment. The method comprises steps of 1) using the inclined surface bounce and collision detection equipment to perform bounce performance calibration and detection of all levels of seamless table tennis balls by level, and obtaining reference calibration areas of all levels of the seamless table tennis balls; 2) writing the reference calibration areas of all levels of the seamless table tennis balls in a processor; and 3) using the inclined surface bounce and collision detection equipment for checking and selecting a to-be-detected seamless table tennis ball. Influences of the falling initial speed of the table tennis ball can be eliminated, errors caused by non-uniform bounce performances of different areas of the spherical surface of the table tennis ball, and real-time online detection can be achieved.

The invention discloses an on-line measuring method of the Poisson ratio of a micro-electromechanical system (MEMS) film based on a resonance frequency method. The method comprises the following steps of: making an annular MEMS film as a testing structure, fixedly supporting the inner boundary of the MEMS film on an anchor zone and enabling the outer boundary of the MEMS film to be free; fixing the anchor zone on a substrate; measuring the resonance frequency of the radial vibration and the transverse vibration of the annular MEMS film; and calculating the Poisson ratio of the MEMS film by using the resonance frequency of the radial vibration and the transverse vibration. In the method, the concrete values of Young modulus, material density and the like of the film are not needed to be known in advance, thereby errors caused by the Young modulus, material density and the like can be avoided, and the precision is improved. Due to the symmetrical structure of the annular film, the fixedsupporting in the anchor zone more approaches to the ideal state. The measuring method belongs to non-contact measurement so that the measuring process can not influence the testing structure, and the repeatability of the measurement can be ensured. The measuring method is suitable for both a conductor and a non-conductor, and the testing structure is simple to make.

The present invention provides a mechanism for rapid measurement of a cartridge receiver outer wall radial difference and an application method thereof. A movable measurement portion employs a linearbearing installed in a measuring body to achieve axial and circumferential motion. The rotation and the radial sliding of the measurement portion in the measuring body solve the stroke problem of measurement of an inner cavity. A fixed measuring rod provided with a sliding measuring rod performs stable and barrier-free sliding on the linear bearing, so that it is ensured that the sliding measuringrod and the fixed measuring rod are located in the same line and unstable factors caused by man-made force application measurement can be eliminated. The measurement effect is high and the measurement data is sensitive, the measurement for the dimensions of the inner portion of the cavity is convenient and rapid, the production efficiency is improved, the application effect is good. The mechanismfor rapid measurement of the cartridge receiver outer wall radial difference and the application method thereof have practical application values, can effectively avoid a problem of interference on measurement caused by parts, and can accurately and rapidly measure the cartridge receiver outer wall radial difference. The measurement method is simple and convenient and rapid in operation. Meter setting is performed on a standard piece when in measurement, detection is performed on a cartridge receiver part to be measured, and the measurement mode is relative measurement to improve the measurement precision and to improve the production efficiency.

The invention relates to a nano-surface interference 3D online measurement method with composite wave and by light scanning and the system thereof. The range depends on the wavelength of the composite wave, and the system has a common path interference structure. The beam with spectral width of 40 nm is color dispersed into two sectored lights with wavelength continuously and uniformly distributed in space by a grating, the two sectored lights are collimated to two parallel lights with transverse misplacement and partial overlapping, and the overlapped part forms a composite wave. The parallel lights of the composite wave passes through a plano-convex focusing lens with a cylindrical surface coated with a semi-transmitting and reflective film, then one half of the lights are reflected to become reference light and the other half of the lights are focused to become light, and then the light is reflected by different measuring points, interfered with the reference light and detected by an array CCD. If the phase variation of the interference signal of each pixel of CCD is measured, then the longitudinal variation at the measuring point can be obtained. The nano-surface 2D measurement is finished by once location; and the nano-surface 3D measurement is finished by transverse scanning of light. The measurement range is 600-1,000 micron, and the resolution is higher than 5 nm. The invention has the advantages of high measurement speed, and low cost; and is suitable for measurement of nano-surface with boss and deep groove.