Stamping die for corrosion-resistant aluminum alloy pipe casting part

The invention is suitable for the technical field of metal stamping, and provides a stamping die for a corrosion-resistant aluminum alloy pipe casting part, the stamping die comprises a stamping assembly and an inner supporting assembly in sliding fit with the stamping assembly, and the stamping assembly comprises a stamping part, two outer supporting parts in sliding fit with the stamping part and an adjusting part fixedly connected to the stamping part; and the inner supporting assembly comprises a sliding part, a moving part in sliding fit with the sliding part, a plurality of inner supporting parts in sliding fit with the moving part and a vertical plate part fixedly installed on the sliding part, the stamping die can achieve inner supporting and outer supporting of the corrosion-resistant aluminum alloy pipe casting part, and in the whole process, only through downward pressing of a hydraulic cylinder, the inner supporting part can be fixed to the inner supporting part, and therefore the corrosion-resist