Patent ID: 8756808
Filing Date: 2014-06-24
Classification: B21C,B21D,B23K,F02B,F04F,Y10T

Abstract:
1. A method for producing a cellular wheel made of metal, having a cylindrical outer sleeve that lies symmetrically with respect to an axis of rotation, a cylindrical inner sleeve that lies concentrically with respect to the outer sleeve, at least one cylindrical intermediate sleeve that is arranged between the outer sleeve and the inner sleeve concentrically with respect to said inner sleeve and said outer sleeve, wherein lamellas that are aligned radially in relation to the axis of rotation are arranged between the outer sleeve and an intermediate sleeve and between the intermediate sleeve and the inner sleeve, as well as in the case of there being more than one intermediate sleeve, between consecutive intermediate sleeves, the method comprising the following steps that are to be executed consecutively: (a1) preparing a first sheet metal strip having two ends and a length that corresponds at least to a length of a circumferential line of the inner sleeve and having a width that corresponds at least to a length of the cellular wheel; (b1) positioning the lamellas at predetermined locations in predetermined quantities on one side of the first sheet metal strip perpendicular to a surface of the first sheet metal strip and perpendicular to a longitudinal direction of the first sheet metal strip and connecting the lamellas to the first sheet metal strip by welding or soldering; (c1) bending the first sheet metal strip provided on one side with the lamellas and connecting the two ends of the first sheet metal strip by welding or soldering to form the inner sleeve; or (a2) preparing a first sheet metal strip having two ends and connecting the two ends of the first sheet metal strip by welding or soldering to form the inner sleeve, or prepare a tubular sleeve as inner sleeve; (b2) positioning the lamellas at predetermined locations in predetermined quantities in axial planes on the outside of the inner sleeve; (c2) connecting the lamellas to the inner sleeve by welding or soldering; (d1) preparing a second sheet metal strip having two ends and a length that corresponds at least to a length of a circumferential line of a first intermediate sleeve and having a width that corresponds at least to the length of the cellular wheel; (e1) positioning the lamellas at predetermined locations in predetermined quantities on one side of the second sheet metal strip perpendicular to a surface of the second sheet metal strip and perpendicular to a longitudinal direction of the second sheet metal strip and connecting the lamellas to the second sheet metal strip by welding or soldering; (f1) bending the second sheet metal strip provided with lamellas on one side and connecting the two ends of the second sheet metal strip by welding or soldering to form the first intermediate sleeve ( (d2) preparing a second sheet metal strip having two ends and connecting the two ends of the second sheet metal strip by welding or soldering to form the first intermediate sleeve, or preparing a tubular sleeve as an intermediate sleeve; (e2) positioning the lamellas at predetermined locations in predetermined quantities in axial planes on an outside of the first intermediate sleeve; (f2) connecting the lamellas to the first intermediate sleeve by welding or soldering; (g) positioning the first intermediate sleeve and connect free ends of the lamellas of the inner sleeve to the first intermediate sleeve by welding or soldering; (h) where applicable, repeating steps (d1)-(f1) or (d2)-(f2) to form at least one further intermediate sleeve and connecting the free ends of the lamellas of the first intermediate sleeve to the second intermediate sleeve, and in the case of there being more than two intermediate sleeves, connecting the free ends of the lamellas of each preceding intermediate sleeve to the subsequent intermediate sleeve by welding or soldering; and (i) positioning a tubular sleeve that is concentric to the intermediate sleeves as the outer sleeve and connecting the free ends of the lamellas of an outermost intermediate sleeve to the outer sleeve by welding or soldering.