Machining method for moving blade with tooth-form arc on rhombus face of blade root

Abstract

The invention relates to a machining method for a moving blade with a tooth-form arc on the rhombus face of a blade root. The method includes the steps that blanking is conducted firstly; centering is conducted, a centre hole is drilled in the center point, and a hexagon is formed; a milling machine positions and clamps the blade and the blade crown end through the centre hole in the center of the blade crown end, and the dimension of the blade root to be machined is reserved; the radial face of the blade root is subjected to rough and finish milling, sawteeth on the radial face of the blade root are obtained through machining, and then the two lateral sides of the blade root are subjected to rough and finish milling and detected through a blade root socket gauge and a feeler gauge; central centre holes in the two ends of a blank are positioned and clamped, and the inner cambered surface and the back cambered surface of a steam channel are subjected to rough and finish milling; and the inner arc profile, back arc profile and adapter position of the steam channel are polished, the blade crown is cut in a liner manner, and machining is completed. The method has the beneficial effects that the design is reasonable and ingenious; the blank is centered in advance, the clamping block blade crown is reserved, and preparation is made for subsequent machining, clamping and positioning; the problem that positioning and clamping are difficult without a positioning reference is solved; and in the later machining process, the blade root socket gauge assists in detection, and single-head pliers can be centered and positioned, so that machining precision is improved, and machining efficiency is greatly improved.

Description

technical field

[0001] The invention relates to the field of processing of fan moving blades, in particular to a processing method for a diamond-shaped toothed arc blade root moving blade. Background technique

[0002] In the past, because the root of the wind turbine blade is a sawtooth shape on a rhombus surface, and the small shoulders of each tooth are arc-shaped and symmetrical to the center of the blade, there is no measurement reference for positioning on the outside of the blade, and it is extremely difficult to design and process tooling. Simultaneously, the sawtooth-shaped slope on the rhombus surface of the processed blade root cannot be measured with a meter, so it is difficult to judge whether the processed size is correct or not. Contents of the invention

[0003] In order to solve the above problems, the present invention proposes a rhombus-shaped tooth-shaped circular-arc blade root moving blade processing method. The design of the method is reasonable and ...

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