perm filename TABLE[1,VDS]1 blob sn#089841
filedate 1974-02-25 generic text, type C, neo UTF8
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C00002 00002 Specifications for Hand Eye Table
Specifications for Hand Eye Table
February 23, 1974
by Vic Scheinman
Table size- 5ft wide, 12 ft. long, 36 inches high to top of surface.
Surface Detail- Aluminum plate surface with a hole pattern 30cm. on
center. Holes to be either 3/16 dia. or 1/4 inch dia. suitable for
dowel pin registration of assemblies which may be placed on the top.
The two arms will be placed opposite each other, 44 inches apart, and
31 inches from one end of the table. The two television cameras will also be
mounted on the table- loacted about 44 inches apartalso, and 60 inches from
the opposite end of the table. The laser-scanner will be placed under the table,
with the periscope part comming up thru the center of the table.
The table structure will be a honeycomb type, using single sheets of
3/4 inch thick 5' x12' grade AC Ext. Plywood as the top and bottom
skins. These skins will be backed with a structure made of 2x6 clear
fir webs set on 12 inch centers. Suitable inspection and
access ports will be placed in the bottom skin to enable installation of the arms and
television cameras which require bolting from the bottom side.
The top surface plate will be anodized after punching and reaming. Color
to be decided upon later. Also, the material thickness will be 1/8 inch
plate or sheet type 6061-T6 Aluminum. This will be N-C punched to an
finished dimension which may be about .001 inch oversize to allow for
N-C punching tolerances, which are claimed to be +/- .005 inches, but
in reality may be better, as that includes some allowance for
part alignment, and also is maximum error which could occur. Closely spaced
holes may be expected to have less position error.
The legs of the table will be wood, 4x4 Clear Fir, glued and screwed to
both gussets and a mounting plate, both made of 3/4 inch thick plywood. Six legs will
be used, inset 6 inches from the edges of the table. And equally spaced.
Shimming will be used to level the table once it is in place.
The Aluminum top will be held in place with a few flat head screws placed around
the edges of the plate. Also, all unused dowel pin holes will be covered by
flat head acrews screwed into the T-nuts mounted in the plywood plate from inside the
table. Thus, each hole will have a chamfer for the flat head screws, for
about 1/3 to 1/2
of the plate thickness. The flat head, socket head screws will then countersink
flush with the plate top, providing a smooth, relatively
hole free surface.