Shield edge scraper 45-degree die-forged blank combination machining technology

The invention belongs to the technical field of production for edge scrapers of shield tunneling machines and relates to a shield edge scraper 45-degree die-forged blank combination machining technology. The shield edge scraper 45-degree die-forged blank combination machining technology comprises the steps that eight 45-degree die-forged blanks are taken, circle combining datum lines and machininglines of two 45-degree side edges are marked on the workpieces, and the two 45-degree side edges of the workpieces are machined; the eight workpieces are aligned based on the reference circle with the side faces arranged in an abutting mode and placed circularly, and point splicing and welding are carried out; seam allowance surfaces and inner holes of the machined workpieces are bored and milled; positioning lines of assembling holes of each workpiece are marked with the two 45-degree side edges of the single workpiece and the machined reference circle as reference, and the assembling holesare machined; first fixtur