You are missing the programming and operating manual which lists the G and M codes. There is a "canned" G code to do helical. Helical means a certain Z distance move while moving in a G17 X and Y circular move and this Z move to be accomplished in a certain amount of degrees of a circle and you can increase or decrease the radius of the circle.
The Bridgeport also supports a G79 which was a very quick and dirty way to do a circle with an arc in and out.
Check with machinemanuals.net to see if he has a programming manual.
George W. |