|
|
This milling attachment is made from heavy sections of aluminum and attaches to the cross slide of a South Bend 9C lathe. A heavy base plate holds the attachment. The compound slide is mounted to the round stock portion of the attachment in the same manner as it mounts to the cross slide. In building this attachment attention must be paid to the travels available relative to the spindle axis.  Conveniently, South Bend has provided two factory drilled and tapped holes in the cross slide for attachments. Clearance must be made on the underside of the attachment base plate for the slightly protruding portion of the cross feed retaining assembly as shown in the below image.  A pair of ears on the back end of the base plate provide for adjustment of the attachment relative and perpendicular to the spindle axis. They contain set screws that also clamp the attachment in place. The left set screw (nearest headstock) is adjusted for alignment and then left alone. The right set screw is loosened and retightened when the attachment is placed in use. This eliminates the need for repeated adjustment of the alignment.  The attachment in use milling slots in aluminum.  Milling a keyway in steel.  |