Hollow flower riveting nut machining process

The invention discloses a hollow flower riveting nut machining process. The process comprises the following steps that (1) all dies are installed at corresponding stations of a cold heading machine, and all stamping die stamping bars and a bottom die center are subject to center position timing and...

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Bibliographic Details
Main Author ZHUO HAILONG
Format Patent
LanguageChinese
English
Published 28.07.2017
Subjects
COMBINED OPERATIONS
FORGE FURNACES
FORGING
HAMMERING
MACHINE TOOLS
MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES,RIVETS, BOLTS OR WHEELS
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
METAL-WORKING NOT OTHERWISE PROVIDED FOR
OTHER WORKING OF METAL
PERFORMING OPERATIONS
PRESSING METAL
PUNCHING METAL
RIVETING
TRANSPORTING
UNIVERSAL MACHINE TOOLS
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Summary:The invention discloses a hollow flower riveting nut machining process. The process comprises the following steps that (1) all dies are installed at corresponding stations of a cold heading machine, and all stamping die stamping bars and a bottom die center are subject to center position timing and alignment; (2) a blank is molded; (3) shaping is carried out; (4) upsetting is carried out; (5) a boss is molded; (6) teeth are folded; (7) inversed buckles are molded; (8) through holes are molded; and (9) a semi-finished product obtained after forging is subject to cutting type tapping through a special tapping machine. By means of the product machined through the process, the push and pull force and the twisting force of the product are larger, the pressure needed by product riveting is smaller, the tooth tips are sharper, and the service life of the dies is longer; and as the tooth tips are very sharp, the resistance during nut rotation is larger, middle-tooth-shaped lines are embedded into a metal plate to ach
Bibliography:Application Number: CN2016140408