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Trudril Pressure Foot Bushing Removal Tool

IP.com Disclosure Number: IPCOM000110956D
Original Publication Date: 1994-Jan-01
Included in the Prior Art Database: 2005-Mar-26
Document File: 4 page(s) / 51K

Publishing Venue

IBM

Related People

Crawford, V: AUTHOR [+2]

Abstract

Disclosed is a device which will eliminate a required 1.5-hour spindle warm-up after following a specific BIM (Built In Maintenance) procedure.

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Trudril Pressure Foot Bushing Removal Tool

      Disclosed is a device which will eliminate a required 1.5-hour
spindle warm-up after following a specific BIM (Built In Maintenance)
procedure.

      The device (Fig. 1) consists of "modified snap" ring plier 1
and specifically designed jaws, as shown in detail in Fig. 2, for the
removal of worn pressure foot bushings on 96/12 Trudril Machines.

      The conventional BIM procedure required spindles be shut off to
remove pressure foot assemblies, remove worn bushings, and then
reassemble the assemblies once again.  With the modified snap ring
pliers and the specially designed jaws, the pressure foot assemblies
are not required to be disassembled.

      The new BIM procedure using the modified snap ring pliers and
specially designed jaws require the spindles to be turned off just
long enough to remove the drills and put dummy drills in the spindles
(scrap drills secured in the colletts with epoxy, with the drill
flute removed).  With the spindles running, the bushings are readily
changed and the machine turned back over to manufacturing with less
impact of loss cycle time due to machine availability.

      Current use of the tool helps insure the pressure foot
assemblies do not get damaged by trying to pry the bushing out with a
screwdriver or reaming the assembly by twisting on the bushing with
pliers.