Stress deformation preventing die for investment casting of a thin-walled part

• Main Author: HU DINGCAN
• Format: Patent
• Language: Chinese; English
• Published: 08.06.2021
• Subjects: CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; FOUNDRY MOULDING; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING

The invention provides a stress deformation preventing die for investment casting of a thin-walled part. The stress deformation preventing die comprises a movable base; two connecting rods are rotationally connected to the right side end face of the left side wall of the movable base, and inner ratchet wheels are arranged at the outer ends of the connecting rods; the outer side end faces of the inner ratchet wheels are connected to transmission gears; the inner ends of the connecting rods are in transmission connection with a transmission rod; swing arms at the two ends of a control rod are connected to lifting supporting legs of a lifting platform; and four lifting supporting legs of the lifting platform make contact with the top end face of the movable base. According to the stress deformation preventing die, two pedals control rotation in one direction respectively, the pedals are treaded to promote a longitudinal rack to move downwards, and the longitudinal rack drives an engaged transmission gear to rota