Cimatron E 7.1 Runner Tutorial

Cimatron E 7.1

Runner Tutorial

Cimatron E 7.1 Runner Tutorial i

Table of Contents

Runner Introduction ............................................................................................................ 1 Sketch.................................................................................................................................. 2

Create Sketch ................................................................................................................... 2 Copy the Sketch............................................................................................................... 4

Runner Body ....................................................................................................................... 5 Local Cross Section ......................................................................................................... 7

Merge ................................................................................................................................ 10 Cut by Runner ................................................................................................................... 10

Cimatron E 7.1 Runner Tutorial 1

Runner Introduction

Runners are channels through which molten material flows from the sprue to the gates to fill a mold cavity. By definition, a runner is created between two plates. It can cut one of the plates or both of them.

This process begins with a user sketch of the runners and ends with the mold being cut by the runners.

2 Runner Tutorial Cimatron E 7.1

Sketch

Create Sketch

Unpack the MD_runner.ctf file.

Open the MD_MD.elt assembly.

From Mold Design guide, click the Runner Design icon and select the Sketcher icon.

Select the plane as indicated in the picture.


The Runner part has been created under the main assembly, and has been automatically activated.

Create the following sketch:


Copy the Sketch

Create an axis defined by the hole indicated by the arrow in the picture shown below.

Copy the sketch as follows: Radial, Counter = 3, Theta=120

You may use a mixture of lines and sketches as input for the runner body.


Runner Body

Select the Runner Bodies icon.

Select the three sketches and exit.

The Runner Cross Section dialog is displayed, as follows:


Select the cross section as indicated in the picture. The numeric fields are now available.

Enter the required size for the cross-section elements, as follows:

Review the resulting runner body (according the parameters you have set).

Note that you can use your own defined cross section by pressing the Other Cross Section button. Then select any 2D -Closed sketch from the display area as the cross section.


Local Cross Section

Set a local cross section. Select the Local Cross-Sections icon in the Feature Guide. Then select the segment and click on the blue cross indicated in the picture.


Set different values to the cross section. Click the Picture button to display the picture of the cross section and its parameters.

Note that the local section is marked with a blue circle while the general section is marked with a blue cross.


Jump back to the previous step. Toggle the Flat End option to the Revolved End option.

Click OK.


Merge

Select the Merge icon to merge the six bodies into one body.

Click OK.

Cut by Runner

Cut the mold components with the runner body.

Select the Cut by Runner icon.

Note that the main assembly is automatically activated.

Select the K20 of the movable side as the object to be cut.


Select the merged runner body as the cutting object

Click OK. Hide the runner body to display the runner on the movable side.

This runner is cut only on the movable side. Note that there may be other runner sections where both sides should be cut.

You may complete the exercise by cutting the sprue bushing and adding gates.

Cimatron E 7.1 Runner Tutorial

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