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Browse Prior Art Database

Spindle-Graduated Adjustment Device

IP.com Disclosure Number: IPCOM000120401D
Original Publication Date: 1991-Apr-01
Included in the Prior Art Database: 2005-Apr-02
Document File: 4 page(s) / 136K

Publishing Venue

IBM

Related People

Haller, KA: AUTHOR [+2]

Abstract

This device relates to the adjustment of a drill spindle into position.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Spindle-Graduated Adjustment Device

      This device relates to the adjustment of a drill spindle
into position.

      Currently, the Spindles mount to the reference surface at
predetermined positions only.  Final adjustment in the x and y axis
requires a hammer and shims.  To adjust the Spindles parallel to the
reference surface, the mounting bolts have to be loosened so that the
Spindle Mounting Block can be tapped into position using a dial
indicator for positional feedback.  To align the Spindles
perpendicular to the reference surface, the bolts have to be
reloosened and shims driven between the Spindle Mounting Block and
reference surface.  This procedure results in damage to the reference
surface, and the initial (reference) position is lost due to the
shims slipping. Thus, the end result of putting the drill on location
is trial and error.  Not only are these crude adjustments
time-consuming and inaccurate, but they make the drill location
difficult to maintain and they require a full supply of precision
gage blocks for each Spindle.

      The present device allows for graduated incremental adjustments
from a fixed initial (reference) position.  An adjustment in the x or
y axis will be accurate, because the initial position will not be
lost.  Thus, the correction will be right the first time.  A supply
of precision gage blocks for each spindle is not needed, and the only
tool required is a screwdriver.  Infinite positioning of the Spindles
will be possible, as well.  Refer to Fig. A for placement of the x
and y adjusters.

      The y-axis adjustment is illustrated in Fig. B.  Torque is
transmitted through the Flexible Shaft to "Y" Adjust Screw.  The
detent fixed to the Screw is used for positioning resolution.  The
Screw is placed through a spring and threaded into the Slide wedge.
The spring provides the preload to eliminate backlash when reversing
directions.  As the Screw is turned, the Slide Wedge advances, thus
decreasing the distance between the Fixed Wedge attached to the
Spindle Mounting Block and the T-slot fixed to the granite.
Retracting the wedge will increase the distance.  Bolting down the
Spindle Mounting Block again will now change its positi...