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Home page of Tools and Machines, a brief description of me, the site and
my reasons for creating it. |
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Including tool angles, shear plane, turning, continuous and discontinuous
chips.
Bookmarks on this page:
Discontinuous chips
Continuous chips
Built Up Edge
Tool Wear
Taylor's Tool Life Theory
Chip Formation In Turning
Suggested Reading
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A representation of a planer machine removing metal by the chip formation
process. |
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Showing the chip forming and separating from the parent metal along the
shear plane. |
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Why rake angle is important. |
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Why a rigid machine, tool and tool holder is essential when machining
brittle materials. |
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Including radial, tangential and axial force when turning and effects on
power consumption |
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How the chip formation process is applied to milling a surface |
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How the milling process can produce different effects when the feed
direction relative to the cutter rotation changes. Advantages and
disadvantages. |
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Types of milling cutter described - including End Mills, Slot Drills,
Slab Mills, Shell Mills, Slitting Saws and Face Mills. |
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Tool materials - high speed steel, cobalt alloy, carbon steel, ceramic,
carbides, cubic boron nitride and diamond explained. |
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Insert tool or throw away tip tools explained and described. |
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Titanium nitride / carbide and Aluminium Oxide tool coatings explained. |
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How cutting fluids help in the metal cutting process, how the five main
categories of oils are suitable for cooling, lubricating and flushing in
different cutting conditions and pressures. |
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Lathes - including multi and single spindle automatic and sliding head.
Cross slide, headstock and turret explained and turning from bar when
automatic machining. |
How a Sliding Headstock or Swiss Type Automatic can produce very long,
thin parts. |
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Milling machines - showing layout of table to spindle axis and the axes
of adjustment. |
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Shearing operations using a press tool including piercing, blanking and
cropping and reducing burrs. |
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Modern machine construction concepts ie slant bed, swarf conveyor,
vibration damping helps higher production rates, machine utilisation and
reduced variation in geometric tolerances. |
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How backlash is reduced and accuracy improved by using a ballscrew not a
leadscrew when table movement changes direction. |
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Control and feedback in modern cnc machines. How servo and stepper motors
with linear or rotary encoders and optical gratings provide closed loop
control for very accurate machine control. |
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How to calculate turning feed and speed. Surface speed to spindle rev per
min and worked example. |
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How to calculate milling feed and speed. Surface speed to spindle rev per
min, table feed per rev, tooth loading and feed per min and worked example |
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A worked example of how Taylor's Equation can calculate percentage change
in tool life at different speeds. |
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ISO Carbide Grades in table form from hard to tough. |
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ISO Insert Coding |
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Brief explanation of the laser and water jet machining processes and a
comparison between them. |
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A place where you may leave your comments or constructive criticism |
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Other stuff
Internet Connection
Sharing and mapping a port through it. Instructions for port forwarding
are found aplenty for hardware routers, but not for ICS. I hope this might
be of use. |
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