Surface World April 2019 Surface World April 2019 | Page 22

INDUSTRY NEWS
Meister’s custom tailored solution
Meister Abrasives,
represented by Master
Abrasives in the UK and
Ireland, have helped their
customer to improve
productivity with the
potential to produce 500
thousand additional parts
per year using the same
machinery with a customised
grinding solution.
Finishing the contours of a fuel injection
pump cam is a very challenging precision
grinding application. As the cam rotates in
the CNC Grinding machine, the wheel is
continuously driven in and out to maintain
constant contact with the part’s out-of-round
surface. With every half rotation the area of
contact of the wheel on the part varies from
minimal to quite extensive.
Under these conditions, intermittent high
surface area contact, the openness and
porosity of the wheel is critical to minimise
the potential for restricting the flow of coolant
into the contact area to avoid burning and
other quality and throughput issues. Having
a sharp wheel and being able to keep it
sharp is also essential to maintain sustained
levels of high productivity.
In this case study the customer already had a
very efficient grinding process using Meister’s
first generation HPB (high performance bond)
technology. They had 14 grinding machines
performing finish contouring of 7 million parts
per year. Their process had been working well
for them, but they wanted to know if Meister
had subsequently introduced additional
technologies that could make their process
even more economical and productive.
Meister worked with the customer to develop a
customised solution based on its new HPL anti
friction grinding wheels in combination with an
improved hDD hybrid diamond dresser. The
new wheel’s porous HPL antifriction bond can
handle and release more material without
sticking or loading up the wheel. It also helps
reduce friction and heat generated as additional
material is liberated. This made it possible to
incorporate advanced ultra-tough CBN crystals
into the wheel for even more aggressive cutting
while prolonging sharpness and wheel life.
The hDD diamond dressers were also upgraded
with new, tougher diamond crystals. These
sharper antifriction grinding wheels reduced a
15 second grind time by 2 seconds, and parts
per wheel increased from 70,000 to 115,000.
With this customised grinding solution, Meister’s
customer could produce 500 thousand
additional parts per year with the same
equipment, enough to avoid the need to
purchase an additional CNC grinding machine.
There were many other systematic
benefits resulting from the custom
tailored solution. Download the case
study for further details and a complete
overview of the process from the
precision case studies section under
www.master-abrasives.co.uk/
information.aspx.
The Grinding & Polishing Handbook Issue14
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The essential collection for grinding and polishing
information from Equip, which includes the very latest
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