Metal cutting involves removing unwanted material from a workpiece. In orthogonal cutting, the cutting tool edge is perpendicular to the direction of motion, so chip flow is perpendicular to the cutting edge. In oblique cutting, the cutting tool edge is at an angle to the direction of motion, so chip flow is sideways. Orthogonal cutting results in higher heat concentration, shorter tool life, and poorer surface finish than oblique cutting. Oblique cutting is used for most industrial processes like drilling and milling.

1. Orthogonal & Oblique Cutting
Shivam Kumar
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2. What is Metal Cutting?
Metal cutting is the process of producing a job by
removing a layer of unwanted material from a
given workpiece.

3. Orthogonal Cutting
The cutting edge of wedge shaped cutting tool is
perpendicular to the direction of tool motion.

4. Oblique Cutting
The cutting edge of wedge shaped cutting tool
makes an angle except right angle to the direction
of tool motion. This will affect the cutting conditions.

5. Differences
Orthogonal Cutting Oblique Cutting
• Chip flow is in the
direction perpendicular
to cutting edge.
• Chip flow is in sideways
direction.

6. Differences Contd.
• This cutting is also known as
2D cutting because the force
develop during cutting can be
plot on a plane or can be
represent by 2D coordinate.
• It is also known as 3D cutting
because the cutting force
develop during cutting cannot
be represent by 2D coordinate
or used 3D coordinate to
represent.

7. Differences Contd.
• High heat concentration
at cutting region.
• Tool life is shorter as
compared to Oblique
cutting.
• Poor surface finish.
• Used in parting,
grooving, slotting, pipe
cutting
• Less concentration of
heat at cutting region
compared to orthogonal
cutting.
• Tool life is more.
• Better surface finish
• Used in almost all
industrial cutting drilling,
milling, grinding

8. Thank You