FIELD: metal processing.
SUBSTANCE: manufacture of complex shaped sheaths. The tubular billet is crimped in the die matrix with the shape of the working surface equal to the shape of the finished shell. A blank with a shaped section is produced. Then, the cylindrical section of the workpiece is rolled on a spinning and rolling machine with deforming rollers. One of the rollers is made with an inclination angle of the front surface, less than the inclination angle of the front surface of the subsequent rollers. Said roller is installed with a gap between its top and the mandrel, which is larger than the gap between the mandrel and the tops of subsequent rollers.
EFFECT: increased dimensional accuracy and quality of the machined surface and the service life of the deforming tool.
9 cl, 2 dwg, 1 ex
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