Boring and Milling Table - Home Model Engine Machinist
Boring and Milling Table - Home Model Engine Machinist
Boring and Milling Table - Home Model Engine Machinist
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The drawings below give the dimensions to be used<br />
in machining the adjusting screw <strong>and</strong> its parts<br />
24 T.P.I.<br />
8"<br />
1¾"<br />
.375<br />
½"<br />
WOODRUFF<br />
KEY FOR<br />
BALL CRANK<br />
18 T.P.I.<br />
.219<br />
.500<br />
.875<br />
.812<br />
.375<br />
1" 1"<br />
1"<br />
1"<br />
.375<br />
.625<br />
Left, the completed boring <strong>and</strong> milling table. Above, the base of<br />
the column <strong>and</strong> the sleeve unit with the adjusting screw in place<br />
TAP 3/8 - 24<br />
.187<br />
.687<br />
.875<br />
1½"<br />
TAPER<br />
DRIVE<br />
FIT<br />
.625<br />
was then reversed, <strong>and</strong> 3/8"-24 threads were<br />
cut on the other end, after which the keyway<br />
for the ball-crank h<strong>and</strong>le was cut in<br />
exactly the same manner as that in the<br />
column itself.<br />
All the parts of the adjusting screw are<br />
shown in Fig. 9. Although the ball-crank<br />
h<strong>and</strong>le can be made on the lathe according<br />
to the dimensions given, one from a discarded<br />
machine may be equally suitable.<br />
Figure 10 shows these parts assembled on<br />
the screw, <strong>and</strong> Fig. 11 the steel column <strong>and</strong><br />
the sleeve. The finished accessory is illustrated<br />
in Fig. 12, ready for work.<br />
NOVEMBER, 1941 191