Tool for installing so-called press nuts

Details Tool for installing so-called press nuts Tool for installing so-called press nuts

1978-12-08

1980-10-28

Husar, Francis S.

Metal deforming

By use of tool acting during relative rotation between tool...

Tool orbiting or rotating about an axis

72391, B21J 1534

Patent

active

042299608

ABSTRACT:
A tool for the installation of so-called press nuts comprises a draw bar which is axially displaceable in a housing. A draw mandrel having a threaded outer end portion for cooperation with a female thread in said press nut is connected to the outer end of said draw bar, so that the press nut can be secured in a bore of a workpiece by being upset by means of a pulling force from the draw mandrel upon axial displacement of the draw bar into said tool housing. Said draw mandrel is axially unmovably but rotatably connected relative to the draw bar. The rotor of a motor is journalled in the tool housing around the outer end of the draw bar and is drivable in one or the other direction of rotation and is arranged thereby to rotate the draw mandrel thereby to screw same into or out of the press nut before and after the upsetting of same.

REFERENCES:
patent: 2445067 (1948-07-01), Hiler
patent: 2723777 (1955-11-01), Amtsberg
patent: 3181338 (1965-05-01), Zetterlund
patent: 3630427 (1971-12-01), Stokes
patent: 3654292 (1972-04-01), Mead
patent: 3906776 (1975-09-01), Humphreys

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