Create Dynamic Gear Connections in Creo 6, 7, 8

Victor Mitov

Create Dynamic Gear Connections

?Creo Parametric

?PTC University

Summary

In Creo Parametric, you can simulate a gear ratio using the Dynamic Gear connection. With a Dynamic Gear connection, you can run a dynamic analysis, a force balance, or static analysis.

A Dynamic gear-pair utilizes manufacturing tooth angles to determine motion properties, including pitch diameter, pressure angle, helix angle, bevel angle, and screw angles. These properties are used to compute motion and kinematic and dynamic analyses. A Dynamic analysis can calculate reaction forces based on the tooth geometry at the location where the pitch diameters meet.

There are four types of Dynamic Gear connections.

Spur – Two cylinders that roll against each other where the pitch circle diameters meet.

Bevel – Two cones that roll against each other where the pitch circle diameters meet.

Worm – Two cylinders that slide against each other where the pitch circle diameters meet.

Rack and Pinion – A cylinder that rolls on the pitch surface of the rack.

Видео урок

Tutorial Tasks

TASK 1

Create a Spur gear connection.

1. Disable all Datum Display.
2. In the ribbon, select the?Applications?tab.
3. Click?Mechanism?from the Motion group.
4. Click?Gears?from the Connections group.

• Select?Spur?as the Type.

1. Select the pin joint on the smaller gear.

• Type?100?for the Diameter and press ENTER.

1. Select the?Gear 2?tab in the Gear Pair Definition dialog box.

• Select the pin joint on the larger gear.

1. Select the?Properties?tab.

• Type?–20?for the Helix Angle and press ENTER.
• Click?OK.

1. Press CTRL+ALT and drag either gear.

• Click?Close?from the Quick Access toolbar.

Note

You can also click?Drag Components?to drag connected components.

• Figure 1

TASK 2

Create a Bevel gear connection.

TASK 3

Examine the Rack and pinion and Worm gear connections.

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