9 results about "Curve design" patented technology

The present application relates to the gradual formation and the same profile combination tenon and slot cutter blade shape space curve parameterization design method, including the following steps: step one, shooting tenon and slot image; Step two, tenon and slot shape curve is discrete; Step three, calculate control point and fit approximation curve; Step four, the same profile cutter tooth space curve design: step five, gradual formation type cutter tooth space curve design; Step six, tenon and slot broach cutter tooth space curve output. The present application reduces the difficulty of tenon and slot broaching cutter space curve parameterization design; The parameterization of the cutter blade space curve realizes the unity of parameter selection, improves the stability of the broach design, and proposes the transition boundary and method of the gradual formation and the same profile combination, solves the problem of difficult to determine the gradual formation and the same profile transition method, reduces the design difficulty; At the same time, the parameterization design solves the long cycle and low efficiency problem of the traditional design method, improves the design efficiency of the broach, and reduces the cost of broach design and manufacturing.

The application discloses a single fulcrum flexible wall nozzle profile curve design method. The method comprises the following steps: obtaining design parameters and a target profile curve of a single fulcrum flexible wall nozzle; determining initial values of support rod parameters according to the design parameters; writing a profile curve calculation program by using MAPLE software, inputting the design parameters and the initial values of the support rod parameters into the profile curve calculation program, and calculating the profile curve; subtracting the target profile curve from the profile curve to obtain a profile curve deviation; when the profile curve deviation is greater than a maximum profile curve deviation, adjusting the numerical values of the support rod parameters according to the profile curve deviation, repeatedly performing iterative calculation by using the MAPLE software, and obtaining the profile curve deviation between the profile curve and the target profile curve being less than the maximum profile curve deviation until the profile curve is obtained. The application does not use a finite element modeling simulation process, has the advantage of short design period, and guarantees the solving precision through elliptic integral solving derived according to the Euler-Bernoulli beam large deformation theory.

The invention provides a wave generator cam curve design method, device and equipment and a storage medium, and the method comprises the steps: loading a true circle radius and cam deformation, and guaranteeing that the true circle length is consistent with the perimeter of an improved curve; constructing a tangent polar coordinate equation of the improved curve based on Fourier expansion, wherein the equation comprises a group of Fourier coefficients; according to the equation, the deformation amount, the extreme value angle corresponding to the extreme value of the curvature variable amount and the curvature ratio, candidate parameters and candidate polar diameters are determined under the condition that a first constraint condition is met; calculating a difference value between the candidate polar radius and a standard ellipse polar radius, wherein the standard ellipse and the improved curve have the same semi-major axis and perimeter; and finally, determining the target polar radius and the contour parameters of the improved curve by combining the polar radius difference, the corresponding polar angle and a second constraint condition.

This application provides a method, apparatus, device, and storage medium for designing a wave generator cam curve. The method includes: loading the radius of a true circle and the deformation of the cam to ensure that the circumference of the true circle is consistent with the circumference of the modified curve; constructing the tangent polar coordinate equation of the modified curve based on Fourier expansion, the equation containing a set of Fourier coefficients; determining candidate parameters and candidate polar diameters under the condition of satisfying a first constraint, based on the equation, the deformation, the extreme angles corresponding to the extreme values ​​of the curvature change, and the curvature ratio; calculating the difference between the candidate polar diameter and the standard ellipse polar diameter, the standard ellipse and the modified curve having the same semi-major axis and circumference; and finally, determining the target polar diameter and the contour parameters of the modified curve by combining the polar diameter difference, the corresponding polar angle, and the second constraint.

The invention provides a volute curve design method and system, electronic equipment and intelligent kitchen equipment. The volute curve design method comprises the steps that n auxiliary volute curves with the expansion degree larger than that of an initial volute curve are generated based on the starting point of the initial volute curve; determining two end points of a curve section to be modified in the initial volute curve; fitting points on the curves of the auxiliary volutes are determined according to the two end points and the circle center of the fan; and fitting the fitting point and the two end points to generate a fitting curve segment, and replacing the curve segment to be modified with the fitting curve segment. According to the method, under the condition that the initial volute curve of the fan is determined, correction is carried out as far as possible on the basis of the initial volute curve, the corrected volute curve keeps the original curve characteristics on the basis of the initial volute curve, the opening degree of the volute curve is increased, and therefore the space of an air duct is increased, and good aerodynamic performance is achieved.

The application discloses a variable cross-sectional area distribution based circulating circle design method, which comprises the following steps: obtaining a given circulating circle outer ring; designing a circulating circle flow cross-sectional area distribution curve by using a Bezier curve, taking the flow cross-sectional area at an inlet as a standard, and taking the flow cross-sectional area at other positions as a relative cross-sectional area to obtain a circulating circle flow cross-sectional area distribution result; establishing a polar coordinate system and a rectangular coordinate system; and solving the inner ring coordinates of the circulating circle in the rectangular coordinate system according to the circulating circle flow cross-sectional area distribution result, and drawing an inner ring curve. The design method adopts a mode of fixing the circulating circle outer ring and changing the cross-sectional area distribution to design the inner ring, simultaneously realizes the circulating circle design with adjustable flow cross-sectional area distribution by using the Bezier curve, can separately design the circulating circle cross-sectional area distribution of different impellers, and realizes the variable cross-sectional area distribution design of the variable torque circulating circle.

This invention provides a method and design for the alignment of high-speed maglev turnouts, including determining the angle constraint between adjacent turnout beams based on the geometric relationship constraints of the track; constructing a straight-line approximation curve design using the standard stator unit length as a constraint; constructing a curve-to-straight-broken-line alignment design using circular curve segments; verifying the parameters of the designed transition curve and circular curve using at least the angle constraint between adjacent turnout beams; solving all parameters of the transition-circular-broken-line turnout alignment after verification; verifying the mechanical performance of the turnout alignment using static stress-deformation, dynamic analysis models, and modal analysis models; and selecting the optimal alignment parameters for the optimal turnout alignment while meeting the mechanical performance requirements. This invention solves the problem that existing turnout alignments are insufficient to meet the needs of practical engineering for turnouts with different levels of lateral passing speed.

The invention discloses a wind power output curve optimization method which comprises the following steps: designing an envelope model based on a generated theoretical wind power output curve, performing piecewise function change on the envelope model according to power change to obtain a minimum value envelope function and a maximum value envelope function, and setting three random working conditions according to the actual operation condition of a fan, different times and time are set for the three working conditions, and different time periods are intercepted through a random algorithm to obtain a final output curve. The method mainly pays attention to increase of medium-low wind speed width and abnormal value scatter simulation, so that a theoretical processing curve is close to the actual value.

Provided is a groove bottom curve design optimization method for an overflow brick, including: S1: obtaining a standard output of the overflow brick based on design parameters; S2: obtaining an initial groove bottom curve of the overflow brick based on the design parameters and the standard output; S3: obtaining a groove bottom curve of the overflow brick through straight line correction of the initial groove bottom curve based on a length of a splitting block; S4: obtaining an extreme thickness difference of a formed glass substrate through overflow simulation based on the groove bottom curve and the design parameters; and S5: when the extreme thickness difference is smaller than or equal to a preset threshold, processing the overflow brick using the groove bottom curve and the design parameters; and when the extreme thickness difference is greater than the preset threshold, adjusting the design parameters and repeating steps S1 to S4.