Identifying collisions

00:08

You can use the Simulate tool to identify collisions that would occur during machining.

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For this video, open the file Turning Simulation Collisions.f3d.

00:21

Here, a part has been provided with series of toolpaths that fully machine the part.

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In the Browser, select Setup1.

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Then, on the Toolbar, Manufacture workspace, Turning tab, Actions panel, click Simulate.

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The Simulate dialog displays.

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On the Simulation Player Timeline, look closely at the red marks

00:49

—these represent collisions in the simulation.

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When you hover your cursor over each mark,

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a tooltip displays with a description of each collision.

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On the Simulation Player, click Play, and notice that,

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during the simulation, the tool turns red on each collision.

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As the Timeline approaches another collision,

01:12

use the feedrate slider to slow down the animation.

01:17

In the canvas, notice that the tool turns red for a moment as it moves back up the flange.

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Hover the cursor over the red mark and a tooltip displays with the title “Collision 13”.

01:31

The description reads, “Holder collides with stock”.

01:35

In the Simulate dialog, scroll down and, under Stock,

01:40

enable the checkbox next to Stop on collision.

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On the Simulation Player, click Go to beginning of toolpath.

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Then, click Play.

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Now, when you rerun the simulation and come to a collision,

01:57

the simulation stops at the location of the collision.

02:02

In the Simulate dialog, click Close.

02:06

In the Browser, under Setup1, right-click the T1 Profile Roughing operation

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and, from the shortcut menu, select Edit.

02:17

The Profile Roughing dialog displays.

02:20

Open the Passes tab, and, under Passes, in the Maximum Depth of Cut field,

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type “.13” to step down the cut a couple thousandths of an inch.

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Click OK.

02:35

In the Browser, under Setup1,

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notice the warning next to the Groove operation since it relies on rest machining.

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Right-click it, and from the shortcut menu, click Generate.

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Click Setup1 and, from the Toolbar, click Simulate.

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In the Timeline, you can see that most of the collisions have disappeared.

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Since you have Stop on collision turned on, the Simulation Player stops on the problem area.

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In the canvas, if you zoom in on the part,

03:12

the simulation shows you that the tool is grooving everything out of the part,

03:17

but, when it gets to the flange to go back up, it is hitting the tool holder as it is going up the wall.

03:24

From this result, you know that you must make an adjustment to the direction of the grooving operation.

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In the Simulation dialog, click Close.

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In the Browser, under Setup1, right-click the Groove operation and click Edit.

03:42

A Groove dialog opens.

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Open the Passes tab and expand the UpDown Direction drop-down.

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Select Only down.

03:53

This is so that the tool cannot pull up against the wall.

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Click OK.

04:00

Click Setup1, and from the Toolbar, click Simulate.

04:05

This time, you can see that there are no collisions on the Timeline.