Polygon Design Tips

Tip #1
Tip #2
Tip #3
Tip #4
Tip #1

Most often, either three-lobe (P3), or four-lobe(PC4) profile can be used. A few rules determine when to use either of them. P3 is used for most of the fixed connections, and when zero backlash is required, especially for frequently separated connections. A tapered P3 prevents a connection from self-locking, by using a 10 degrees included angle, or steeper tapers. The torque on the tapered profile, also generates an axial separating force. (A fastener or lock nut is required)

Tip #2

Most of the sliding connections use the PC4 profile. However, a P3 connection is acceptable with a low torque and high actuating force, as in hydraulic cylinders, and when sliding occurs under no-load.

Tip #3

PC4 sliding connections require greater force for axial movement under torque load than straight-sided splines. At zero torque load, they perform equally well, and often better than involute splines.

Tip #4

Polygon benefits such as increased strength, smaller space requirements, lighter weight, self-centering characteristics, simplified manufacturing techniques, concentricity, and angular orientation accuracy are maximized, when systems are fully designed around polygons from the outset.

Applications

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    Aerospace Industry

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    Bomb Disposal Robot

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    Compressors

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    Crushers

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    Drill Head Units

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    Dynamometers

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    Envelop Manufacturing Machines

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    Film Manufacturing Machines

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    Food Machinery

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    Gas Turbine Couplings

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    Gear Boxes

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    Stamping Machines

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    Glass Mold Machines

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    Harmonic Drives

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    Hydraulic Cylinders

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    Index Machines

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    Injection Molding Machines

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    Machine Tools

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    Marine Diesel Engines

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    Measuring Machines

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    Mechanical Seals

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    Mill Roll Heads

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    Milling Machines

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    Mining Equipment

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    Multi-Spindle Lathe Gear Systems

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    Oil Drilling

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    Packaging Machinery

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    Plastic Extruding Machines

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    Printing Presses

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    Pumps

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    Rotary Engines

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    Satellite Launchers

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    Steel Rolling Machines

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    Textile Machinery

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    Thread Rolling Machines

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    Tool Holders

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    Transmissions

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    Tube Bending Machines

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    Valve Actuators

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    Variable Speed Drives

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    Water Brakes

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    Winding Machines

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    Wire Drawing Machines

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