RIEGGER diamond and CBN abrasive pencils and grinding rollers
are grinding tools for internal grinding featuring a high-precision
shank and substrate design as well as a uniform abrasive coating.
Free cutting action can be attained with these grinding tools
even when machining small diameters by using special diamond
or CBN cutting crystals. A high shape accuracy and dimensional
constant of the machined bore can thus be attained together
with an optimal tool life.
Process criteria and application tips
Determination of the diameter of the grinding head:
The arc of contact must be as large as possible.
The following formula has proved to be reliable for calculating
the diameter of the grinding head:
Grinding head Ø D =
Ø of bore to be ground
RIEGGER diamond abrasive pencils and RIEGGER-CBN abrasive
pencils enable a true running accuracy to within several µm.
As a prerequisite for actually achieving this precision in
the grinding result, the corresponding requirements must be
met at the machine end, especially regarding the clamping
elements, and the necessary handling care must be exercised.
The chucking length at the shaft should amount to approx.
0.6 x L.
When performing grinding operations on a jig milling machine
or in moldmaking, extreme abrasive pencil projection lengths
often cannot be avoided. For this reason, we offer you abrasive
pencils specially designed for such work featuring a special
shank made of material with an extremely high E-module.