Title:
METHOD AND DEVICE FOR PRODUCING METAL ITEMS FROM METAL BLANKS
Document Type and Number:
WIPO Patent Application WO2001060537
Kind Code:
A3
Abstract:
The invention relates to a method for producing metal items from metal blanks (1). The metal blank is positioned between two roller surfaces of two rollers (5), these roller surfaces being opposed and having means for being rolled out against each other from a starting position to an end position. A negative mold of the metal item to be produced is created with at least one recess in a roller surface. The process of positioning the metal blank in the starting position of the rollers takes place in the area of the recess. The rollers are then rolled out against each other from the starting position to the end position, the metal blank being shaped into the metal item by cold-forming as the rollers roll out; and the formed metal item is removed from the rollers. The invention is characterized in that the recess is configured with a variable depth curve in the directions parallel to a roller axis, at least in a partial area, and in the rolling-out direction of the rollers.
Inventors:
BOGUSLAVSKIJ BORIS (RU)
Application Number:
PCT/DE2001/000661
Publication Date:
April 10, 2003
Filing Date:
February 15, 2001
Export Citation:
Assignee:
KAN TECH GMBH (DE)
BOGUSLAVSKIJ BORIS (RU)
BOGUSLAVSKIJ BORIS (RU)
International Classes:
B21H7/00; B21J9/02; B21K11/02; B21H7/10; B21H9/00; (IPC1-7): B21H7/00; B21J7/18; B21K11/02
Foreign References:
| GB759563A | 1956-10-17 | |||
| US2939350A | 1960-06-07 | |||
| DE363929C | 1922-11-15 | |||
| FR605660A | 1926-05-31 | |||
| GB770192A | 1957-03-20 | |||
| DE2811745A1 | 1978-09-21 | |||
| DE2029621A1 | 1971-12-30 |
Other References:
DATABASE WPI Section PQ Week 199617, Derwent World Patents Index; Class P52, AN 1996-170051 [17], XP002179830
DATABASE WPI Section Ch Week 199619, Derwent World Patents Index; Class M21, AN 1996-186570 [19], XP002179831
RUDIK F Y ET AL: "CHIPLESS WORKING OF MATERIALS. ROLLING KNIFE BLADES", RUSSIAN ENGINEERING RESEARCH, ALLERTON PRESS, NEW YORK, US, vol. 17, no. 7, 1997, pages 33 - 35, XP000773986, ISSN: 1068-798X
DATABASE WPI Section Ch Week 199619, Derwent World Patents Index; Class M21, AN 1996-186570 [19], XP002179831
RUDIK F Y ET AL: "CHIPLESS WORKING OF MATERIALS. ROLLING KNIFE BLADES", RUSSIAN ENGINEERING RESEARCH, ALLERTON PRESS, NEW YORK, US, vol. 17, no. 7, 1997, pages 33 - 35, XP000773986, ISSN: 1068-798X
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