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Machining Cutting Tool Tool Bit Helix Rotates

Drilling is a machining process where a cutting tool moves linearly while the workpiece rotates, describing a helical toolpath. Turning generates external surfaces while boring uses the same cutting action to produce internal surfaces like holes. Facing cuts perpendicular surfaces on the rotating workpiece and can be considered a subset of either turning or boring operations.

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Subodh Ranjan
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38 views1 page

Machining Cutting Tool Tool Bit Helix Rotates

Drilling is a machining process where a cutting tool moves linearly while the workpiece rotates, describing a helical toolpath. Turning generates external surfaces while boring uses the same cutting action to produce internal surfaces like holes. Facing cuts perpendicular surfaces on the rotating workpiece and can be considered a subset of either turning or boring operations.

Uploaded by

Subodh Ranjan
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOCX, PDF, TXT or read online on Scribd
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Drilling is a machining process in which a cutting tool, typically a non-rotary tool bit, describes

a helix toolpath by moving more or less linearly while the workpiece rotates. The tool's axes of
movement may be literally a straight line, or they may be along some set of curves or angles, but
they are essentially linear (in the non mathematical sense). Usually the term "turning" is reserved for
the generation of externalsurfaces by this cutting action, whereas this same essential cutting action
when applied to internal surfaces (that is, holes, of one kind or another) is called "boring". Thus the
phrase "turning and boring" categorizes the larger family of (essentially similar) processes known as
lathing. The cutting of faces on the workpiece (that is, surfaces perpendicular to its rotating axis),
whether with a turning or boring tool, is called "facing", and may be lumped into either category as a
subset.

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