The Tap, Bore, or Ream operation occur last for a Hole feature. If the Hole is tapped, then no Bore operations are possible.
Tap cuts threads in the Hole and is measured in TPI (threads per inch) in inch units or Pitch (millimeters per thread) in metric units. Ensure you set the Max tap spindle RPM attribute on the Drilling tab.
For a tapping operation, the depth is determined as follows:
|
Tool |
Diameter |
Depth |
|
Plug point tap |
Less than 3/8 inch (9.5mm) |
(diameter - 1.1047xPitch)/2 + 4.75xPitch |
|
Plug point tap |
3/8 - 7/16 inches (9.5 - 11 mm) |
4.75xPitch |
|
Plug point tap |
>=7/16 inches (11.1mm) |
4.75xPitch + .2xDiameter |
|
Bottom point tap |
< 7/16 inches (11.1mm) |
1.75xPitch |
|
Bottom point tap |
>= 7/16 inches (11.1mm) |
1.75xPitch + .2xDiameter |
Bore uses a boring bar to position a Hole exactly. Bore and Ream settings are not normally used together.
Ream drills a Hole feature undersized and then reams it to size. The diameter of the drill is between 93% and 97% of the final hole diameter. Bore and Ream settings are not normally used together.