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US 4,356,717 AGranted
Method and apparatus for forge-shaping sheet members
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsHiromu Okunishi, Hideki Nakaji, Hiroyuki Suwa, Hideaki Sato
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Abstract
A method and apparatus for forge-shaping sheet-shaped members having upper and lower dies for pressing and forge-shaping a sheet-shaped material heated to a quenching temperature or an imperfectly quenching temperature set from a required hardness. The apparatus also includes cooling ducts for quenching the forge-shape material. The material is continuously quenched as it is kept pressed.
Claims8
A method of forge-shaping a brake disk, comprising the steps of:
- heating a starting material to a predetermined temperature for attaining a hardness of 30 to 45 HRC required for said brake disk, said starting material having a flat standard steel plate shape and an initial thickness greater than a final thickness after shaping thereof;
- inserting said heated material as kept heated between upper and lower dies;
- strongly pressing and forge-shaping said material at an annular disk portion and a central hub-fitting portion thereof to remove irregularities thereon and to attain parallelism and flatness thereof, said material being plastically radially deformed during said forge-shaping such that a portion of said material escapes from said annular disk portion and said central hub-fitting portion to an intermediate portion therebetween;
- drawing said intermediate portion of said material between said annular and central forge-shaped portions simultaneously with said forge-shaping;
- and
- continuously quenching said heated material while it is kept strongly pressed between said upper and lower dies.
3 more elements
An apparatus for forge-shaping a brake disk, comprising:
- first upper and lower dies for strongly pressing and forge-shaping an annular disk portion and a central hub-fitting portion of a flat standard steel plate material heated to a predetermined temperature for attaining a hardness of 30 to 45 HRC required for said brake disk such that a portion of said material between said dies escapes from said annular disk portion and said central hub-fitting portion to an intermediate portion therebetween;
- draw-shaping means mechanically and operatively connected with said dies for drawing said intermediate portion of said material between said annular and central forge-shaped portions;
- and
- cooling means for continuously quenching the shaped material while said material is kept strongly pressed between said upper and lower dies.
1 more element
Dependencies are inferred from the claim text.