To Set Up a Retract Sphere

Click $image\ebx_-219831740.gif$ next to the Surface text box in Retract group box, located on the General tabbed page of the Operation Setup dialog box, or select Retract from the SEQ SETUP menu.

The Retract Selection dialog box opens.

Select the Sphere option in the Retract Selection dialog box.
By default, the sphere center is either the Machine or the NC Sequence coordinate system (depending on whether you define retract at the operation or the NC sequence level). To specify a different center, use one of the following options in the drop-down list in the Set Sphere Center group box:

Default—Use the default center, that is, the Machine coordinate system if you define retract at the operation level, or the NC Sequence coordinate system if you define retract at the NC sequence level.
Select Csys—Select a coordinate system.
Create Csys—Create a coordinate system.
Select Datum Point—Select a datum point.
Create Datum Point—Create a datum point.

The system displays the name of the coordinate system or datum point that is the current center of the sphere at the bottom of the Set Sphere Center group box. It also shows, in parentheses, the name of the model that the coordinate system or datum point belongs to.

There are two ways to specify the sphere radius:

Select the Sphere Radius option and type the radius value in the text box to the right.
Select the Offset From Datum Point option. This activates the Set Offset Reference group box with the following options in the drop-down list:

Default—Use the sphere center as the offset reference.

Select Point—Select a datum point to be used as the offset reference.

Create Point—Create a datum point to be used as the offset reference.

The system displays the name of the reference datum point, with the model name in parentheses, at the bottom of the Set Offset Reference group box. Type the offset value with respect to this datum point in the text box below the Offset From Datum Point option.