METHOD FOR PREVENTING CUT BURR OF PLATE PARTS

PURPOSE:To prevent the generation of a cut burr and to improve productivity by executing die pressing to the plate blank of after blanking and executing in advance the bevelling of the part to be cut. CONSTITUTION:Blanking is executed via a blanking die 12 on a plate blank 11 to form a plate blank 1...

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Bibliographic Details
Main Authors HARINE MAKOTO, FUJII UKIO, ARAKI KUNIHIKO
Format Patent
LanguageEnglish
Published 01.05.1989
Subjects
BORING
MACHINE TOOLS
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
PUNCHING METAL
TRANSPORTING
TURNING
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Summary:PURPOSE:To prevent the generation of a cut burr and to improve productivity by executing die pressing to the plate blank of after blanking and executing in advance the bevelling of the part to be cut. CONSTITUTION:Blanking is executed via a blanking die 12 on a plate blank 11 to form a plate blank 13 which is subjected to die pressing by a die 15 fur ther. In this case, the projecting piece 14 of the blank 13 is bevelled along the shape of the die 15 at its end edge part 14a. A bevelling part 16 is formed on all of the projecting pieces 14 by the one die pressing of the die 15. When the projecting piece 14 is cut by a cutting tool, the generation of a cut burr is prevented because the bevelling part 16 is already formed on the projecting piece 14. Moreover, the productivity is improved as a deburring work can be omitted.
Bibliography:Application Number: JP19870267911