FIELD: machine building.
SUBSTANCE: using one mandrel for obtaining a final shell profile, during the first pass the workpiece is rolled on the mandrel with a full profile of a final shell with a design gap until a certain height of a semi-finished product and obtaining of a part of the final cover profile. On the subsequent passes the obtained part of the profile is rolled with the design gap or with the gap exceeding the design gap up to the following height. Meanwhile the number of passes required for preliminary optimum dissecting of height of the shell profile obtained by rolling is pre-calculated.
EFFECT: accuracy of geometrical sizes of the shell is increased and the surface quality is improved.
1 dwg
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