Machining path coordination method for bilateral ultrasonic rolling of blade surfaces

A machining path coordination method for bilateral ultrasonic rolling of blade surfaces, comprising:

• Step S1, layering a blade to obtain contour curves with shapes of “A” and “n” of blade edges at different heights of a blade model;
• Step S2, determining endpoints of machining paths of the blade;
• Step S3, planning blade thickness and rotation angle, which comprising:
• Step S31, obtaining main direction angle αm of the contour curves;
• Step S32, solving the blade thickness d;
• Step S33, obtaining a rotation angle θ required for blade machining when the contour curve is in the shape of “A”,
• θ
• =
• π
• 2
• -
• α
• m
• ,
• wherein αm is main direction angle of the contour curve;
• Step S34, obtaining a rotation angle required for blade machining when the contour curve is in the shape of “n”;
• the step S34 comprising:
• Step S341, setting most area of blade body is set as a main direction segment, setting area adjacent front and rear edges as a vertical segment and setting area between the main direction segment and the vertical segment as a transition segment;
• Step S342, calculation method of rotation angle for blade machining of the main direction segment is consistent with that of the step S33;
• Step S343, the rotation angle for the blade machining of the vertical segment is zero;
• Step S344, taking two points P and Q from the transition segment, wherein the point P is an end point of the vertical segment and the point Q is a starting point of the main direction segment, if there are m machining points between points P and Q, the blade will rotate with an interval of angle
• θ
• d
• =
• (
• π
• 2
• -
• β
• )
• /
• m
• ,
• wherein β is the main direction angle at the point Q.