Method of manufacture of annular metal articles |
|||||||
申请号 | US71097658 | 申请日 | 1958-01-24 | 公开(公告)号 | US3079682A | 公开(公告)日 | 1963-03-05 |
申请人 | TEXTRON INC; | 发明人 | DUNN BAILEY WILLIAM; | ||||
摘要 | |||||||
权利要求 | 1. THE METHOD OF MAKING AN ANNULAR METAL ARTICLE HAVING A SLEEVE-LIKE BODY WITH A SMOOTH BORE AND AN EXTERNAL RIB OF SHOULDERED FORMATION SYMMETRICALLY DISPOSED BETWEEN RELATIVELY NARROW RIM-LIKE ANNUALR EXTREMITIES, SAID METHOD COMPRISING TRUING A RELATIVELY SHORT PIECE OF ROD STOCK TO PROVIDE A BLANK, THEN INDENTING THE RESPECTIVE SIDE FACES OF THE BLANK IN TWO STEPS WITH INTERVENING TRANSFER OF THE BLANK BETWEEN TWO DIE-AND-PUNCH STATIONS TO REVERSE THE BLANK END FOR END FOR FORMING ANNULAR, AXIALLY PROJECTING RIM-LIKE PROJECTIONS AT THE RESPECTIVE ENDS OF THE BLANK BY EXTRUSION OF THE METAL WITHOUT RADIALLY INCREASING THE SIZE OF THE BLANK, THEN AT A FURTHER DIE-AND-PUNCH STATION COMPRESSING AND SHORTENING THE BLANK WHILE PRESERVING THE RIM-LIKE PROJECTIONS AND FORMING A LATERALLY PROJECTING EXTERNAL RIB ON THE BODY, INTERMEDIATE THE ENDS THEREOF, HAVING A THICKNESS NOTABLY GREATER THAN THAT OF THE RIM-LIKE PROJECTIONS, WHEREBY THERE IS FORMED A SHALLOW WEB IN THE SLEEVE INTERIOR, AND THEN PIERCING THE BLANK AT A FURTHER STATION TO REMOVE SAID WEB. |
||||||
说明书全文 |