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A naturally-rounded edge (below, left) is formed when wire is rolled flat in a rolling mill. The natural rounded edge is not a perfect arc radius but can be approximated by a radius which is greater than half the thickness of the wire.

A corner radius (below, left) is defined as any configuration between a radius and chamfer. The measurement of a corner radius is the distance from the blend point on one surface to the extension of the other surface. The established level of corner radius measurement accuracy requires that the measured value be rounded to the nearest .0005″ (.0127 mm).

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In this month’s blog, we will explain the differences between and advantages of different types of 5-Axis work holding technology to help you make the right choice.

When a shop acquires its first 5-Axis machining center, there is a lot of new information to be learned, from new and more complex programming techniques to choosing the right work holding device. These machines can tilt, rotate and position parts in ways that were not possible before, allowing you to machine five sides of a workpiece in a single setup.

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Selecting the right work holding device is crucial for the success of your 5-Axis machining. For more information on each type of work holding device and its benefits, or for help selecting the right one for your shop, contact us.

This design permits many movements at the same time to make smooth or intricate designs, and it has many benefits such as:

A crown radius (below, right) is a round edge of a specified radius of curvature rolled into the edge of the wire. The crown radius can be rolled into any or all sides of the wire.

Conventional CNC machining centers operate on three axes for movement: the X-, Y- and Z-axes. In a , two of these three axes rotate, adding an A- and B-axis, as you can see represented in the picture below.

Square, rectangular or flat wire can be produced with a variety of standard edge conditions. Equally, wire can be produced with special edge conditions. The edge conditions are usually defined as a “radius” or a “radius of curvature.” The actual measurement of this specified parameter is dependent on the edge and finish wire shape. (ASTM B250.)

A square edge (below, right) is where the edge of the wire has been rolled flat to be square to the width of the material. Squared-edge flat wire will have a corner radius dimension that can be specified. Squared-edge flat wire generally accords tighter tolerances on the width dimension as compared to a natural edge.