What is Oblique Cutting? (Its Definition, Examples & More)

Oblique Cutting

What is Oblique Cutting?
Oblique cutting is a type of metal cutting operation in which the cutting edge of the tool is inclined to the direction of tool travel. In simple words, the cutting edge of the tool is at some angle during the machining process.

Oblique cutting is a three dimensional cutting that is used in various metal cutting operations.

Oblique cutting is a widely used metal cutting method because it is more advantageous than orthogonal cutting.

Examples of oblique cutting

Oblique Cutting examples
The cutting edges in drill bit is inclined to the direction of feed

Examples of oblique cutting are listed below.

  1. Drilling
  2. Milling
  3. Reaming
  4. Broaching
  5. Turning

How does Oblique cutting differ from Orthogonal cutting?

Here is a table showing the difference between Orthogonal cutting and Oblique cutting.

Orthogonal cutting Oblique cutting

1). In orthogonal cutting, the cutting edge of the tool is perpendicular to the direction of the feed.

1). In oblique cutting, the cutting edge of the tool is inclined to the direction of the feed.
2). In orthogonal cutting, only 2 components of the cutting force act on the tool during the cutting operation.2). In oblique cutting, 3 components of the cutting force act on the tool during the cutting operation.
3). In orthogonal cutting, the cutting edge is always larger than the width of the cut.3). In oblique cutting, the cutting edge may or may not be larger than the width of the cut.
4). The metal chips flow in the direction perpendicular to the cutting edge.4). The metal chips flow in the direction inclined to the cutting edge.
5). In orthogonal cutting, the flat spiral coils of chips are formed.5). In oblique cutting, the longer chips are formed sideways.
6). The cutting force produced in an orthogonal cutting is distributed in a larger area, which results in smaller heat developed per unit area.6). The cutting force produced in an oblique cutting is distributed in a smaller area, which results in larger heat developed per unit area.
7). Sharp corners are produced on the workpiece by orthogonal cutting operation.7). Small chamfer is formed at the end of the cut by oblique cutting operation.

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