Hydrotapping power unit

Metal deforming – By application of fluent medium – or energy field – With cutting

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C072S056000, C083S053000, C083S054000, C029S421100

Reexamination Certificate

active

06915672

ABSTRACT:
A hydrotapping power unit is disclosed that is operable to position and hold a hydrotapping tool in a home position adjacent a part while the part is being hydroformed in a die cavity, to then advance the tool to pierce a hole in the hydroformed part while the part remains in the die cavity and under pressure and then continue to advance the tool to inwardly extrude the part about the hole, to then further advance while also rotating the tool so that the tool is fed at a feed rate equal to the thread pitch of the tool to thereby form a thread in the pierced hole, and finally to retract while also rotating the tool but in the reverse direction and at the same feed rate to release the tool from the threaded hole. The power unit performing these operations includes a linearly moveable shaft for holding the tool, a powered device for rotating the shaft, a powered device for linearly moving the shaft, and a lead screw connection between the latter powered device and the shaft having a thread pitch equal to that of the tool.

REFERENCES:
patent: 3919871 (1975-11-01), Andrasev et al.
patent: 5321964 (1994-06-01), Shimanovski et al.
patent: 5398533 (1995-03-01), Shimanovski et al.
patent: 5737952 (1998-04-01), Baumann et al.
patent: 6098437 (2000-08-01), Kocer et al.
patent: 6442820 (2002-09-01), Mason
patent: 6591648 (2003-07-01), Ash et al.
patent: 6681611 (2004-01-01), Haag et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Hydrotapping power unit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydrotapping power unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrotapping power unit will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3415647

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.