How to Create a Parting Line and Surface

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How to create a parting line and surface

A parting line in moldmaking is the place where two or more parts of the mold meet. At

times, either because the mold halves do not meet with enough precision or because

injection pressure is high, material will creep into the space between the molds. This

document will show you how to make a simple parting line and surface in XOR.

Process

1. The application can extract a parting line from a mesh. Click the Ref. Polyline

command. Select a mesh and a plane or vector which will be the direction that the

molds opens and set the method to “Parting”. Click the Ok button and then the

application automatically finds polyline which is the most outside of the mesh.

2. Draw a spline that covers the mesh in the Sketch mode

Extrude it using the Surface Extrude command (Insert > Surface > Extrude) as

shown in the image below.

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3. Select the Polyline to convert it as a spline in the 3D Sketch mode and click the OK

button.

4. Project the spline onto the extrusion surface using the “Project” command (Tool >

3D Sketch Tools > Project) in the 3D Sketch mode as shown in the image below.

Note

You must check the Project Duplicated Curve option. If you check this option,

copied curve will be projected and you can use the remaining spline in the later

process.

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5. Creates a surface using the “Surface Loft” command (Insert > Surface > Loft) as

shown in the image below.

You can get a parting surface as shown in the image.

6. To change the surface to mesh, use the “Convert body” command (Tools > Mesh

Tools > Convert Body).

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7. Copy & Paste the parting surface (mesh1) and you can see the mesh data in the

Left Feature Tree.

8. To make a single mesh, use the Combine command (Add In > Combine). You can

see the combined mesh data in the left Feature Tree.

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The result of the completed parting surface will be as shown in the below image.