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Title:

Cutting Processes

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Cutting speed refers to the speed at which the tool point of the ... Hypertherm machine plasma torch. Pictured with rack & pinion holder. Laser Cutting. Finale ... – PowerPoint PPT presentation

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Title: Cutting Processes


1
Cutting Processes
  • Material Removal Processes and the Tools Used

Cindy McPeek Elaine White John Freed Bill Nutter
2
Band Saw
Drill Press
Milling Machine
3
(No Transcript)
4
Metal cutting Physics Idealized Chip
FormationBuilt Up EdgeCalculating Speeds and
Feeds
5
Idealized Chip Formation
6
Built Up Edge
7
Calculating Speeds and Feeds Cutting speed refers
to the speed at which the tool point of the
cutter moves with respect to the work measured in
feet per minute. Feed is the rate at which the
work moves into the cutter measured in feed per
tooth revolution. Feeds and speeds affect the
time to finish a cut, tool life, finish of the
machined surface, and power required of the
machine. The cutting speed is mostly determined
by the material to be cut and the material of the
tool. To find the right speed for any task, refer
to the Machinery's Handbook or other reference.
To calculate the proper spindle speed, divide the
desired cutting speed by the circumference of the
tool (or of the part if it is rotating) expressed
in feet. The feed rate depends on the width and
depth of cut, finish desired and many other
variables. To calculate the desired feed setting
from the feed rate, multiply feed per tooth per
revolution by number of teeth and rpm of the
spindle.
8
Cutting Tool Terminology
9
Hypertherm machine plasma torch.Pictured with
rack pinion holder.
10
Laser Cutting
11
Finale
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