8 results about "Radian" patented technology

The invention belongs to the technical field of plate frames for spaceflight, and particularly relates to a roll bending correction method for a quenched sheet n-shaped frame part for spaceflight, which comprises the following steps: S1, quenching in a linear state; s2, quenching deformation is eliminated, and the geometric dimension is corrected; s3, roll bending and roll correction correction and forming correction are carried out; s4, flatly knocking the sunken part and rolling a small radian; and S5, performing pure manual accurate correction, and detecting and correcting the 90-degree angle of each bent angle part to enable the 90-degree angle of each bent angle part to meet the angle tolerance requirement. The problems of low processing efficiency, high cost, high correction difficulty and the like caused by the defects of distortion, warping, verticality inclination and vertical plate arching deformation are effectively eliminated, and meanwhile, the correction efficiency is improved by nearly 10 times.

The invention discloses a method for detecting the radian of a steel pipe. The method comprises the following steps: lofting a section of arc line of the radian of the steel pipe to be measured according to the proportion of 1: 1; connecting two end points of the arc line into a straight line as a chord line; equally dividing the chord line into a plurality of equal parts to obtain each equal division point of the chord line; drawing vertical lines perpendicular to the chord line by taking each equal division point as a starting point, and extending vertexes of all the vertical lines to an arc line; measuring theoretical lengths of all vertical lines; the end points of all the vertical lines are smoothly connected to obtain an arc line with the required radian; a chord line, a vertical line and an arc line are made into a real object as a radian measuring scale by adopting a hard material; the radian of the measuring scale is adjusted out and the radian of the measuring edge is fixed and shaped, then the measuring edge of the radian measuring scale is placed on the inner wall of the steel pipe to be tightly attached to the pipe wall, and whether the radian of the steel pipe and the designed radian meet requirements or not can be known according to the attaching condition and the gap between the measuring edge of the measuring scale and the inner wall of the steel pipe. The method can meet roundness detection of various pipe diameters.

The invention belongs to the technical field of rotor inspection and detection, and discloses a rotor inner hole measuring method and device, and the method comprises the steps: setting an avoiding radian distance of a vertical groove; determining a measuring point outside the avoiding area of the vertical groove; putting a control measuring pin into the inner hole of the rotor for measurement, keeping away from the avoiding area of the vertical groove, and recording an air pressure sudden change position; the middle position between the two annular grooves is determined according to the starting position and the stopping position of each air pressure sudden change; the middle position between every two annular grooves is used as a unified positioning surface for measurement; selecting the maximum calibration device and the minimum calibration device corresponding to the tolerance range to calibrate and calibrate the measuring instrument according to the diameter of the inner hole of the rotor and the tolerance allowable range; and calculating the difference between the theoretical size of the inner diameter of the minimum calibration device and the measured value of the inner diameter of the minimum calibration device. The detection precision of the non-standard equipment rotor inner hole detection device can be improved.

The present application discloses a method for adjusting the line and slope of a shield tunnel, which relates to the field of tunnel engineering technology, including: obtaining the coordinates of the first shield center point and the second shield center point to calculate the arc value between the first shield center point and the second shield center point; obtaining the actual offset between the tunnel center line and the line center line and the limit allowable error value of the plane, and calculating the plane envelope according to the actual offset, the limit allowable error value, the coordinates of the first shield center point and the arc value; obtaining the section mileage value of the longitudinal section, the actual top measuring point elevation, the actual bottom measuring point elevation, the minimum allowable height of the contact network installation and the minimum allowable height of the track structure, and calculating the longitudinal section envelope accordingly; adjusting the line and slope of the shield tunnel based on the plane envelope and the longitudinal section envelope. The present application improves the efficiency of line and slope adjustment by calculating and generating the line plane and the longitudinal section envelope in the CAD drawing, and assisting the line and slope adjustment work with visual graphics.

The invention discloses an SDL parameterization modeling method and system for an arc, and the method comprises the steps: deriving a plurality of parameterization equations through different parameterization methods according to a set unit arc degree, carrying out the normalization processing of the constructed SDL parameterization equations, and obtaining a normalization result, the method comprises the following steps: performing parameter normalization on a unit circle by using different parameterization methods and a plurality of derived parameterization equations to obtain a parameter equation, obtaining an arc construction parameter by using the obtained parameter equation to construct an arc, and calculating a parameter of a point on the arc by using two addition / subtraction operations, sDL parameterization is faster than arc length parameterization and chord length parameterization, the SDL parameterization is global # imgabs0 # continuous, and the application of CAD can be met. Meanwhile, SDL parameterization is closer to arc length parameterization than chord length parameterization. SDL parameterization can be re-parameterized into quadratic rational Bessel representation through appropriate quadratic change, point reversal is carried out by adopting two addition and subtraction operations, and the performance in balancing calculation speed and uniformity is good.

The present application discloses a method, apparatus, device, and storage medium for calculating the movement trajectory of a product. The method includes: obtaining the starting point, ending point, and radius of an arc segment of the product; determining the center of the arc segment and the radian value based on the starting point, ending point, and radius. According to the center of the circle and the radian value, calculate the movement trajectory of the center point of the product, so that under the control of the control mechanism, the center point moves along the movement trajectory. When all points on the arc segment pass through the processing device in sequence, the distance from the processing device is the same. By using the geometric characteristics of the arc segment in the embodiments of the present application, a target arc corresponding to the center point of the product is formed as the movement trajectory of the center point of the product during the processing of the product to be processed. When the product to be processed moves along the calculated movement trajectory under the control of the control mechanism, all points on its arc segment pass through the processing device at equal distances in sequence, thereby improving the processing efficiency and processing accuracy of the arc segment of the product to be processed.

The utility model relates to the technical field of continuous casting machine radian measurement, in particular to a continuous casting machine radian measuring device which comprises a radian measuring frame, the bottom of the radian measuring frame is fixedly connected with a height adjusting seat, and the right side of the radian measuring frame is fixedly provided with a first driving motor through a fixing frame. The output end of the first driving motor is fixedly connected with a threaded supporting rod, the surface of the threaded supporting rod is in threaded connection with a threaded sleeve plate, and the top of the threaded sleeve plate is connected with a limiting assembly. The height of the base is adjusted according to an adjustment scheme generated by analysis of a measurement result to form latest radian data, and the data of the base are finely adjusted again according to a review result, so that the practical tracking effect of measurement alignment and correction and remeasurement of the radian of the continuous casting machine can be realized.

This invention relates to the field of ring rolling mill technology, and particularly to a method and system for controlling the ellipticity of a ring rolling mill based on dynamic ellipticity detection. The method includes: using a laser rangefinder to collect the laser distance at measurement point i of the ring in real time, obtaining the ring wall thickness at measurement point i; using a main roller encoder to obtain the radian coordinates of measurement point i; calculating the outer diameter, inner diameter, and middle diameter of the ring; calculating the ring radius, original reference radius, and effective radius at each measurement point i; calculating the length of the major and minor semi-axis of the ring, and then calculating the ellipticity; determining whether the ellipticity meets the set value; if not, calculating the core roller compensation amount and performing radial compensation; and repeating the above steps until the ring is processed according to a preset diameter increase and height / wall thickness processing program. This invention improves the processing efficiency and forming quality of the ring.