Feed/Speed tab

You can use the Feed/Speed tab of the Turn Properties dialog to change the feeds and speeds settings for a Turning feature.

Note: When using Turnmilling toolpaths (machining using a rotating endmill), this tab is replaced by two tabs: Turn F/S and Mill Speed.

Spindle Direction — The direction the spindle turns for the selected operation. Select from CW (clockwise) and CCW (counter-clockwise). If you select the option that is not the default, the Override option is selected automatically. Deselect the Override option to return to the default value.

Speed

Constant Surface Speed — Select this option to specify the speed as a constant surface speed.

RPM Range — If your machine has explicit spindle speed ranges, you can set this option.

Surface Speed — Enter the surface speed in SFM (surface feet per minute). FeatureCAM uses the displayed recommended value by default. You can optionally enter a different value and the Override option is automatically selected. If you want to revert back to the recommended value, deselect Override.

Spindle speed — If you want to enter the speed as a single revolution per minute value, deselect Constant Surface Speed and enter the Spindle speed.

Maximum speed — Enter the maximum constant surface speed in RPM. This is the maximum revolutions per minute that the machine can generate. FeatureCAM uses the displayed recommended value by default. You can optionally enter a different value and the Override option is automatically selected. If you want to revert back to the recommended value, deselect Override.

Approach speed — Enter the constant surface speed approach in RPM. This is the initial speed for the operation before it reaches the part. FeatureCAM uses the displayed recommended value by default. You can optionally enter a different value and the Override option is automatically selected. If you want to revert back to the recommended value, deselect Override.

Feeds

The Feeds section is for setting how fast the tool moves through the stock. The default units are IPM (inches per minute) or MMPM (mm per minute). Optionally select Use IPR (inches per revolution) or Use MMPR (mm per revolution) to change the units.

FeatureCAM uses the displayed recommended feed value by default. You can optionally enter a different value and the Override option is automatically selected. If you want to revert back to the recommended value, deselect Override.

Feed from start point or curve — Select this option to use a feed move from the Start point or the end of the Start curve, to the beginning of the toolpath. If you are using a start curve, you have two further options:

• Rapid on curve — Select this option if you want to use a rapid move along the start curve.
• Feed on curve — Select this option if you want to use a feed move along the start curve. Enter the feed rate value(s). You can set the feed move as a single value, or use a comma separator to enter multiple values, for example 200, 100, 50. If you enter multiple values, the feeds are applied to the curve segments in reverse order. so with these values, the last segment has a feed rate of 50, the second last has a feed rate of 100, and any remaining segments have a feed rate of 200. If you do not enter any feed rate values, FeatureCAM uses the default feed rate.