1. Purpose of shaping surfaces standing at an angle to each other and stepped surfaces

When shaping surfaces standing at an angle to each other, surfaces are machined which meet at one edge at right angles or inclined to each other.

The size and position of the angle may vary.

Figure 1. Surfaces standing at right angles to each other

Figure 2. Surfaces standing inclined to each other

When shaping stepped surfaces, surfaces are machined which in several steps stand vertically or at an angle to the plane surface.

Figure 3. Stepped surfaces

A combination of both techniques is possible.

During shaping normally big amounts of material are removed by straight-lined cutting and feed movements. Prismatic workpieces are mainly machined.

Angular and stepped surfaces are used as bearing or guiding surfaces.

As with shaping a surface finish of Rz = 20 mm can be reached at best, subsequent techniques such as grinding and scraping are often applied.

What is to be understood by shaping of stepped surfaces?
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Where are angular and stepped surfaces used?
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