FIELD: process engineering.
SUBSTANCE: invention relates to metal forming, particularly, to drawing of box part from sheet blank. Semis are drawn sequentially, in job-by-job manner, in dies. At first job, bottom section is produced to comply with box part bottom. At next jobs, inclined wall is formed at semis to extreme depth without breakdown to configuration approximating all jobs to box part configuration. At final job of drawing, semi-finished product results with wall, shape and sizes corresponding to those of box part with trimming allowances.
EFFECT: higher surface precision and quality, decreased quantity of drawing jobs.
12 dwg
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