A Drilling and Scribing Method for Skin Parts

Abstract

The invention relates to a drilling lineation method for a skin part. The method includes the following steps: 1) projecting outer edge lines and central points of all holes of the skin part onto a datum plane in the direction of the datum plane according to sizes, 2) drawing projection points on a steel plate with a thickness of 3-5mm according to a ratio of 1:1, 3) drilling light-transmitting holes at the projection points of all the holes and drilling light-transmitting holes arranged in an evenly-spaced mode at the positions of projection outer edge lines, 4) locating the skin part on a mold and placing the steel plate above the skin part, 5) irradiating above the steel plate with parallel light to make all centers of light spots formed by the light-transmitting holes in the projection outer edge lines located on the outer edges of the skin part, and 6) lining out the centers of the light spots on the skin part with a hatching pen to finish lineation. The drilling lineation method for the skin part improves accuracy and efficiency in hole position lineation of the skin part, improves efficiency in producing the skin part and achieves interchangeability of the skin part.

Description

technical field [0001] The invention relates to a drilling and scribing method for skin parts, which is used for the drilling and scribing method for curved surface skin parts. Background technique [0002] The surface shape of some skin parts on the aircraft is very complicated. During assembly, many holes need to be drilled on the skin. Then drill the holes. When marking the holes, bend the ruler to measure the size, and then mark the center of the holes one by one. Because it is very inconvenient to measure the size on the curved surface, and the measurement error is large, when the number of holes is large, it will cause difficulty in scribing, and the accuracy and efficiency of scribing are very low, which in turn affects the processing quality and efficiency of holes. When drilling multiple skin parts, multiple measurements and markings are required, which greatly reduces the production efficiency of the skin parts, and is not conducive to realizing the interchangeabi...

AI Technical Summary

Problems solved by technology

Because it is very inconvenient to measure the size on the curved surface, and the measurement error is large, when the number of holes is large, it will be difficult to mark the line, and the marking accuracy and efficiency are very low, which will affect the processing quality and efficiency of the hole.

When drilling multiple skin parts, multiple measurements and markings are required, which greatly reduces the production efficiency of the skin parts, and is not conducive to the realization of the interchangeability of the skin parts

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