Design method for hook face fillet part marking template

Abstract

The invention relates to a design method for a hook face fillet part marking template. The method comprises the steps that 1, the plane of a bottom web plate of a hook face fillet part is taken as a reference plane, and a bottom surface outer edge contour line projection line a, a fillet top surface outer edge line projection line b, a fillet top surface inner edge line projection line c and an outer side fillet surface hole center projection point D are obtained; 2, a top surface outer edge offset line d is obtained; 3, a normal e, a normal offset line f1 and a normal offset line f2 are obtained; 4, an intersection point F1 of a tangent line g and the normal offset line f1 and an intersection point F2 of the tangent line g and the normal offset line f2 are obtained; 5, a circle D1 and a circle D2 are made through taking the intersection point F1 and the intersection point F2 as the centers of the circles respectively and the diameters of the circle D1 and the circle D2 range from phi 2 mm to phi 50 mm; 6, the bottom surface outer edge contour line projection line a, the normal e, the circle D1 and the circle D2 are only retained; 7, a line a' and a line e' are drawn, a through hole D1' and a through hole D2' are made, and the design of the marking template is completed. The design method for the hook face fillet part marking template is used for improving the machining precision and the machining efficiency of a hook face fillet tack hole of the part, and the machining cost of the part is reduced.

Description

technical field [0001] The invention relates to a design method for a scribing template of curved rib parts, and belongs to the technical field of process equipment. Background technique [0002] Most of the parts on the aircraft have complex shapes. One type of parts has a flat bottom web surface and a curved surface on the side ribs. There are many nail holes on the curved ribs for assembling with other parts. When drilling these For the holes on the curved ribs, it needs to be marked according to the size or drilled with a special drilling jig. When drilling a hole according to the dimension marking, it is necessary to mark the center position of the hole on the surface according to the design dimension, and then drill the hole. Due to the inconvenience of measuring and marking on the curved surface, the machining accuracy and efficiency of the hole are low, and each marking can only complete the processing of one part, and the versatility is poor. When drilling with a ...

AI Technical Summary

Problems solved by technology

Due to the long cycle and high cost of drilling jig design and manufacturing, it affects the production efficiency of parts and increases the manufacturing cost of parts

And when the hole position of the part is changed, it is very inconvenient to repair the drilling jig, and it may even cause the jig to be scrapped because it cannot be repaired

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