Claims
- 1. Apparatus for inserting a generally cylindrical rivet blank in workpieces and for forming heads at opposite ends thereof comprising a pair of coaxial head forming anvils at opposite sides of the workpieces and means for moving said anvils relatively toward each other to form said rivet heads, each of said anvils having a rivet head forming recess therein comprising a flat circular bottom wall of substantially the same diameter as the end of a rivet blank and a flaring side wall for guiding the associated end of said rivet blank into abutment with said bottom wall whereby the rivet blank is accurately positioned and held in coaxial alignment with said head forming anvils.
- 2. Apparatus according to claim 1 wherein said rivet blanks have chamfered ends and wherein the bottom walls of said anvil recesses are of substantially the same diameter as the chamfered end faces of said rivet blanks.
- 3. Apparatus according to claim 2 wherein said flaring side walls of said head forming recesses of said anvils are frusto-conical.
- 4. Apparatus according to claim 1 wherein said flaring side walls of said head forming recesses of said anvils are frusto-conical.
Parent Case Info
This is a division of application Ser. No. 735,388 filed Oct. 26, 1976, now U.S. Pat. No. 4,060,189.
US Referenced Citations (4)
Divisions (1)
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Number |
Date |
Country |
Parent |
735388 |
Oct 1976 |
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