Design method of molded surface measuring template of large-torsion blade
A technology of twisting blades and design methods, applied in mechanical counters/curvature measurement, etc., can solve problems such as inapplicability, and achieve the effect of reducing theoretical design errors
Active Publication Date: 2021-10-22
WUXI TURBINE BLADE
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Problems solved by technology
[0004]
Aiming at the technical problem that the existing design method of the profile measurement template is not suitable for the design of the profile measurement template of the large torsion blade, the present invention provides a design method of the profile measurement sample of the large torsion blade, which can ensure that the profile The theoretical design error of the measurement template is small, which meets the actual measurement requirements
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[0014] See image 3 , a method for designing a profile measurement template of a large torsion blade of the present invention, specifically, the section profile at a height of 0.5 mm above the measured section of the large torsion blade is defined as the upper section profile, and the upper section profile is image 3 In the profile formed by the dotted line 3 and the dotted line 4 on both sides of point A, the section profile at a height of 0.5 mm below the measured section of the large torsion blade is defined as the lower section profile, and the lower section profile is image 3 In the contour formed by the solid line 5 and the solid line 6 on both sides of point A, the upper cross-sectional contour will intersect the lower cross-sectional contour at point A, and the half of the upper cross-sectional contour (that is, dotted line 4) and half of the lower cross-sectional contour located outside point A will be The profile composed of the section profile (i.e. the solid line...
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Abstract
The invention provides a design method of a molded surface measurement sample plate of a large-torsion blade. The design method can solve the problem that an existing design method of the molded surface measurement sample plate is not suitable for design of the molded surface measurement sample plate of the large-torsion blade. The design method comprises the following steps: defining a section contour at a position 0.5 mm above a measured section of the large-torsion blade as an upper section contour, defining a section contour at a position 0.5 mm below the measured section of the large-torsion blade as a lower section contour, and enabling the upper section contour and the lower section contour to intersect at a point A, defining a contour which is located on the outer side of the point A and composed of a half of the upper section contour and a half of the lower section contour as a theoretical contour of the molded surface measurement sample plate, then offsetting the theoretical contour outwards according to the design envelope amount to obtain an actual contour of the molded surface measurement sample plate, and machining and manufacturing the molded surface measurement sample plate according to the actual contour.
Description
technical field [0001] The invention relates to the field of blade profile detection, in particular to a design method for a profile measurement template of a large torsion blade. Background technique [0002] At present, the commonly used blade profile detection is to use the profile measurement template to perform detection on the profile frame measuring tool. Usually, the design of the profile measurement template adopts a certain amount of outward offset of the theoretical profile line of the measured section of the blade as the design envelope value of the profile measurement template, such as figure 1 As shown, 1 is the theoretical profile of the blade section, and 2 is the profile of the template after offsetting the envelope value. The template measurement surface width w of the profile measurement template 8 is usually designed to be 1 mm, and edges 9 are processed on both sides of the template measurement surface, such as figure 2 shown. During the measurement,...
Claims
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Login to View More IPC IPC(8): G01B5/20
CPCG01B5/20
Inventor 王成富章奇董欣欣王薛礼邹维平滕树新潘利军
Owner WUXI TURBINE BLADE