Turbine blade profile detection method and measurement device
A technology of turbine blades and measuring devices, which is applied in the direction of measuring devices, mechanical measuring devices, and mechanical devices, etc., can solve the problems of low measurement efficiency and achieve the effects of improving measurement efficiency, sufficient data, and improving machining precision
Active Publication Date: 2020-05-19
CHINA HANGFA SOUTH IND CO LTD
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Problems solved by technology
[0005] The invention provides a turbine blade profile detection method and a measuring device to solve the technical problem of low measurement efficiency of the existing detection method
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[0026] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in various ways defined and covered below.
[0027] figure 1 It is a structural block diagram of the method for detecting the profile of a turbine blade in a preferred embodiment of the present invention; figure 2 It is a comparison chart of the measured blade airfoil and the standard airfoil of the preferred embodiment of the present invention; image 3 is a schematic structural view of the measuring device of the preferred embodiment of the present invention.
[0028] Such as figure 1 As shown, the turbine blade profile detection method of the present embodiment includes the following steps: establishing a measurement coordinate system of the measured blade; projecting and amplifying the measurement section of the measured blade; Airfoil Figure 7 is compared and fitted, and the deviation between the me...
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The invention discloses a turbine blade profile detecting method and a measuring device. The turbine blade profile detecting method comprises the following steps that a measuring coordinate system ofa detected blade is established; the measuring section of the detected blade is subjected to projective amplification; the amplified measuring section is compared and fitted with a standard blade profile figure amplified by the same multiples, and the deviation between the blade profile of the detected blade and the standard blade profile is detected; and blade machining parameters are adjusted according to the detected deviation. Through the turbine blade profile detecting method, the measuring section of the detected blade is amplified by detected blade projection equipment to be compared and fitted with the standard blade profile figure amplified by the same multiples, a plurality of blade profile points on the profile line of the measuring section can be selected to be fitted with thestandard blade profile, then the deviation is detected, and thus data is more sufficient; and a measuring path does not need to be planned according to the standard blade profile, and the measuring efficiency is improved.
Description
technical field [0001] The present invention relates to the technical field of blade inspection methods, in particular, to a turbine blade profile inspection method and a measuring device. Background technique [0002] The shape of the new type of aero-engine turbine blade is complex, the curvature of the blade shape changes greatly, the contour accuracy of the blade shape is high, the tolerance requirements of the blade shape and the position of the blade shape and the tooth position are strict. In order to ensure the quality of blades, different stages of blade manufacturing need to be inspected, and the process runs through the entire stage from blank, machining to blade assembly. [0003] It is an important means to ensure the quality of blade manufacturing during blade inspection. By detecting whether there is thickening and thinning in the outline of the blade, it can be judged whether the performance and strength of the blade meet the standard; by detecting the deviat...
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IPC IPC(8): G01B5/20
CPCG01B5/205
Inventor 初文潮易鹏黄文俊王志杰杨秀伟
Owner CHINA HANGFA SOUTH IND CO LTD