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How CNC Turning Works
Weimi Hardware Tech. Company | Updated: Oct 19, 2017

How CNC turning works

CNC turning produces parts by "turning" rod material and feeding a cutting tool into the turning material. On a lathe the material to be cut rotates while a cutter is fed into the rotating workpiece. The cutter can be fed at a variety of angles and many tool shapes can be used.

 

Advantages

CNC turning provides an economical way to make parts that are commonly symmetrical about an axis of revolution.

 

Shapes 

Shapes that can be made include a variety of plain, taper, contour, fillet and radius profiles plus threaded surfaces. Although many turned parts use a single axis of revolution, there can be multiple axiis to allow more flexibility (e.g. camshafts). This method of machining can be combined with CNC milling and other processes to make more diverse shapes. Examples of parts made include: Robot PartsShift knobsMotorcycle PartsAuto PartsToy PartsKnobsPulleys, shafts, hubs, bushings, flywheels, etc.

 

Materials 

The following rigid materials are commonly turned: AluminumStainless SteelCopperNylonSteelAcetalPolycarbonateAcrylicBrassPTFETitaniumABSPVC, Bronze, etc.

 

Design Considerations 

  • As  the turning process applies pressure to the material, weak shapes that may flex can be difficult to machine, such as long thin structures. 

  • Turning  generates a cut surface with fine helical feed marks resulting from the rotation of the part and movement of the cutter - consider specifying a      desired surface roughness.

  • Bored holes become difficult when the ratio of the depth to diameter is high.

How to Proceed

We can quote your job using conventional CAD files or you can use our unique free CAD software where you can: design your part quickly and easily, get instant pricing, and order online.

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