Using an extrusion tap to form threads on Aluminium T Slot Extrusions
Автор: GAP Engineering T-Slot Aluminium
Загружено: 2020-01-23
Просмотров: 9929
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The most commonly accepted method of creating a threaded hole is to use a cutting tap
However, you can often produce better threads using a forming or extrusion tap.
The main differences between cutting and forming taps can be summarised as follows
• No material is removed during thread forming instead the material is displaced to form the thread.
• The thread formed has a smoother burnished finish.
• The threads produced are stronger.
• Thread forming taps are better suited for use in holes that are interrupted by longitudinal slots such as the ones commonly found in some Aluminium T Slot Extrusions.
• Actual thread sizes are usually closer to gauge limits
• The life expectancy of the tool is usually 20 times longer for an extrusion tap.
• Higher spindle speeds used with extrusion taps translate into higher productivity when cutting threads.
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