TPT November 2008

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November 2008 118 ›
Cutting, Sawing & P rofiling T echnology
In order to avoid burr and chips in a saw
cutting mode, it is necessary to use a
sharp-cut thin circle blade. A burr-free
cutting machine with this blade rotates
around the pipe at higher speeds,
avoiding burr and chips. Therefore,
the circle blade in the burr-free cutting
method runs at higher speeds than in
planetary cutting.
The difference between burr-free cutting
and planetary cutting mainly involves
the number of circumferential journeys
around the pipe. There is only one
rotation of the circumference during
planetary cutting, while there are several
circumferential rotations during burr-free
cutting.
Therefore, burr-free cutting is not suitable
for pipe diameter over Ø 250mm. If the
circle blade is changed into a rectangle
sharp-cut blade – enabling directional
cutting – then it can be applied for plastic
profile burr-free cutting.
Foshan Technwell Plastic Machinery
Co Ltd – China
Fax: +86 757 83877735
Email:
Website:
directional round plate saw cutting,
planetary saw cutting and burr-free cutting.
The cutting method is determined by the
diameter of the saw plate. In terms of
directional round plate saw cutting,
the diameter of the saw needs to
be larger in relation to the pipe
diameter and profile width, while
the cut surface is lower quality and
the noise louder. Therefore, this
method is limited and not suitable
for pipe diameters over Ø 250mm.
If the pipe diameter is over Ø
250mm, it is necessary to employ
the planetary saw mode of cutting.
Using a planetary cutting saw,
the saw is round and operates
independently at high speeds.
It works by rotating around the pipe
in one circle, in order to achieve pipe
cutting with a high quality surface
finish, especially suited to pipe
that requires a chamfered end. It
is possible to use this method with
larger diameter pipe, while noise
levels are decreased.
Foshan Technwell Plastic Machinery Co
Ltd, China, is the manufacturer of advanced
cutting devices for plastic pipe and profiles.
A number of methods are employed for
cutting plastic pipe and profile, including
Plastic pipe and profile cutting
 Foshan Technwell offer technology for the cutting of plastic
pipe and profile