Split Body

Split Body

Use the Split Body command to divide a solid body or sheet body into multiple bodies using a single face, a set of faces, or a datum plane. You can also create a sketch internal to the command and either extrude or revolve it to create the splitting tool. This command creates an associative Split Body feature that appears in the history of the model. You can update, edit, or delete the feature.

Target body Splitting plane Split Body feature

• When you split a solid body using a face, the face must be large enough to cut through the body completely.
• For help with creating a split body in a CAE workflow, see Split Body overview in the Pre/Post Help.
• In earlier versions of NX, the Split Body command removed all parameters from a solid or sheet body that was split. As of NX 6 this is no longer true. Bodies are no longer automatically de-parameterized when they are split.

Where do I find it?

Application	Modeling
Command	Split Body

Split a solid body using Extrude

1. Choose Home tab→Base group→Split Body .

In the Split Body dialog box, Select Body is active in the Target group. 2. In the graphics window, select one or more target bodies. 3. Under Tool, set the Tool Option list to Extrude. 4. Under Section, use the Sketch Section option to specify the sketch plane and sketch the curves in the Sketch. 5. Under Direction, use the Specify Vector options to specify the direction in which the sketch curves are to be extruded.

Section curves to extrude

Handles to specify the required extrude direction 6. Click OK or Apply to create the Split Body feature.

Split a solid body using Revolve

1. Choose Home tab→Base group→Split Body .

In the Split Body dialog box, Select Body is active in the Target group. 2. Select one or more target bodies. 3. In the dialog box, under Tool, set the Tool Option list to Revolve. 4. Under Section, use the Sketch Section option to specify the sketch plane and sketch the curves in the Sketch. 5. Under Axis, do the following:

Use the Specify Vector options to specify the axis around which to revolve the specified sketch curves. 6. Use the Specify Point options to specify a point on the axis of rotation around which to revolve the specified sketch curves 7. Click OK or Apply to create the Split Body feature.

Split Body options

Target
Select Body
Tool
Tool Option
Section
Appears when Tool Option is set to Extrude or Revolve.
Select Curve
Direction
Appears when Tool Option is set to Extrude.
Specify Vector
Axis
Appears when Tool Option is set to Revolve.
Specify Vector
Specify Point
Settings
Keep Imprinted Edges

Split Body failure conditions

If you are splitting a solid body, the split operation may fail if:

• The face being used to split the body is tangent to the face of the body.
• The face of the body is coincident with any joint of adjacent faces of the splitting sheet body.

Solid body (cylinder) to be split

Shaded face of the splitting sheet and the face of the body to be split are tangent

Joint of the splitting sheet and the face of the body to be split are coincident

Splitting sheet (multifaced)

To resolve this problem, try the following.

• Extract sheets from the solid body.
• Trim the sheets with curves and/or planes.
• Create any necessary caps and sew the sheet bodies into a solid body.