Brake shoe formed of sheet metal and method of producing the same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Mar 27, 2003
app pub date -
Nov 14, 2002
filing date -
May 15, 2000
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The present invention provides a brake shoe formed of sheet metal and allowing a brake lining to be firmly bonded, and a method of simply and inexpensively producing the brake shoe. The brake shoe is comprised of a shoe rim 11 formed in a cylinder having a circumference partially notched and an outer surface with a brake lining 10 bonded thereto, a pair of shoe ribs 12 extending from a vicinity of an inner, axially center circumference of shoe rim 11 radially inward toward each other, and an attachment plate 13 extending between paired ribs 12 radially inward, wherein shoe rim 11 has an outer surface knurled 14. The brake shoe is produced by: cleaving and spreading an outer peripheral portion of a metallic, disk-shaped blank 20 in a direction of a thickness of the sheet metal to form an intermediate, rolled product having a short cylindrical portion 33 and a web 34 extending radially inward from a vicinity of an inner, axially center circumference of cylindrical portion 33; subsequently pressing a knurling barrel 39 against an outer circumferential surface of cylindrical portion 33 to knurl 14 the outer circumferential surface of cylindrical portion 33; and punching the intermediate, rolled product to obtain brake shoe 1, shaped as described above.
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