Method for generating convexity curve of raceway

The invention discloses a raceway convexity curve generation method. The method comprises the following steps: step 1, establishing a rectangular coordinate system at a peak point of a peak arc; 2, calculating a convexity curve equation of a peak arc; 3, calculating circle center coordinates of the edge arcs; 4, calculating a convexity curve equation of the edge arc; 5, calculating a convexity curve equation of the oil groove arc; and step 6, carrying out equidistant division on the x axis of the rectangular coordinate system mentioned in the step 1 and obtaining the numerical value of the corresponding x, substituting the numerical value of the x into the convexity curve equations in the steps 2, 3 and 4 according to the position of the x, and drawing a raceway convexity curve containing an oil groove arc. The method has the beneficial effects that through the equations, an oil groove arc line is brought into a design range when the convexity curve of the raceway is designed, so that the calculated convexity