MAIN ROTOR BLADE, ADVANTAGEOUS TO PRODUCTION PROCESS, PRICE COMPETITIVENESS, QUALITY AND ENVIRONMENT, FOR HELICOPTER AND MANUFACTURING METHOD THEREOF

摘要

Purpose: a main rotor blades are provided for the helicopter and a manufacturing method of the main rotor blades for helicopter, it can obtain effect, such as the shortening of production process, pass through improvement, quality improvement and the environmental protection of the price competitiveness of sizable difference compared with existing material and manufacturing method. Construction: manufacturing method includes that a piece of sword of a manufacturing process (4) passes through in one forging rate of the first solid-state extrusion; Cutting edge stretches sword and distorts sword to a desired angle, after the both ends of clamping reduction sword are to a stenter stationary jaw (5) and a stenter moving jaw (6) to the process of certain length; The mobile process of stretching, extension twisted blade is rebounded according to the forming process of sword; Torsion angle expected from a manufacturing process main rotor blades by heat treatment checks main rotor blades and finally checks heat treated main rotor blades, after the expected torsion angle for checking the main rotor blades manufactured by stretching process. It can include that a piece of sword of manufacturing process (4) passes through in the first solid-state extrusion forging rate by manufacturing method that formula, which distorts the manufacture of aluminium main rotor blades,; Cutting edge stretches sword and distorts sword to desired angle, after the both ends of clamping reduction sword are to stretcher leveler stationary jaw (5) and stretcher leveler moving jaw (6) to the process of certain length; The mobile process of stretching, extension twisted blade is rebounded according to the forming process of sword; Pass through the manufacturing process main rotor blades torsion angle inspection of heat treatment and manipulates main rotor blades and finally check heat treated main rotor blades after the torsion angle for checking main rotor blades manufacture by stretching process and manipulate torsion angle inspection main rotor blades.