The invention discloses a manufacturing method of a triangular gate of a navigation channel ship lock, and relates to the technical field of manufacturing processes, and the manufacturing method comprises the following steps: S1, selecting a material, and detecting the quality, appearance and size of the
raw material; s2, blanking is conducted, specifically, construction drawings and
technical specifications are familiar, the blanking size precision is controlled, blanking is conducted through a
laser cutting method,
programming is conducted based on a
numerical control laser cutting machine and matched with CAD /
CAM software, and the selected materials are put into the
numerical control laser cutting machine to be
cut; and S3, a jig frame is manufactured, and vertical supporting columns are welded through I-shaped steel and fixed through expansion bolts. In the manufacturing process, the precision is strictly controlled, reasonable
welding deformation control measures are adopted, the good effect is achieved, in the aspect of precision control, the blanking size deviation is controlled within the extremely
small range, the form and location tolerances of part
machining all meet the design requirements, the symmetrical
welding and segmented skip
welding method is adopted, and the
machining precision is greatly improved. And the
welding deformation of the gate leaf is effectively controlled.