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DIAMETAL
1|09
DIAMETAL CLOSES THE GAP:
ELECTRODES FOR SPECIAL THREADS.
Those doing electrical discharge machining have found hardly any electrodes on the market for fine or special threads. Diametal remedies this situation and satisfies all kinds of customer wishes in this area.
The problem is well-known: electrodes for
standard threads – namely metric thread sizes
from M3 onwards – are available on the market
without any problem: off the shelf and at inex-
pensive prices. But those who want to spark-
erode a HA thread according to DIN58810,
i.e. a thread for bone screws and nuts, have a
bigger problem. To get an electrode for this ap-
plication area is indeed much harder. The over-
whelming majority of providers for standard-
thread electrodes decline to help.
Diametal is the knight in shining armour here:
thanks to its broad-based expertise gained
from the production of grinding tools and its
extensive know-how in the field of grinding
technology, the company can manufacture
tungsten-copper electrodes up to M1.2. Diam-
etal can also fabricate fine threads with every
conceivable pitch, trapezoidal, round and pipe
threads, and other special threads. Anyone
just in the process of inventing a new thread
can also count on us: we’ll make you the cor-
responding electrode! The limits of feasibility
when manufacturing electrodes only lie in the
minimum radii in the internal forms. Therefore,
the feasibility of very small threads has to be
looked at case by case.
As a result, EDM specialists can now offer
their customers special threads as well – with
the help of our electrodes. Diametal is concen-
trating on an important market niche with this
service and is opening up new possibilities for
its customers that they haven’t had before. In
contrast, we are deliberately keeping away
from the mass business of standard threads.
Dear Reader,
Although 2009 is now
history, it will continue
to occupy us for a long
time. It remains in our
memory as the year of big changes.
It is probably only a few of us who have
experienced years like that one, in which
new beginning, reorientation, renounce-
ment and termination have manifested
themselves to such an extent. In the
world of work, many painful decisions
have had to be made and radical mea-
sures have had to be initiated. The impact
of these changes will stay with us for a
longer period of time.
However, despite all the worries and dif-
ficulties last year has caused us, there are
also positive aspects to report: the wealth
of our experience has been enormously
enriched by the changes we have had to
make. And we will undoubtedly profit in
future from what we have learned.
At the end of what has been in many
respects a bleak year, there were already
the first signs of that delicate little
plant «upswing», which it is now our
job to nourish and cultivate. So that it
can properly flourish, we must continue
pragmatically along the path we have
taken and demonstrate a lot of flexibility
in the future.
With this in mind and in this spirit, I wish
you and all of us a successful 2010 – also
as regards the most valuable possession
we have, our health.
Daniel Brügger, CEO Diametal AG
EDITORIAL
Newsletter from DIAMETAL AG · www.diametal.com 1/10
Bone screw thread with
pitch 0.8 mm, spark-eroded
with Diametal electrodes.
Diametal can also grind all possible and
«impossible» types of thread onto your
carbide or ceramic part.
Further info:
Contact: Stefan Rötheli
THE DIAMETAL EXPERT TIP
2 DIAMAIL 1|10
The technology of wheels bonded with syn-
thetic resin is already over half a century old
and it is now technically mature and very so-
phisticated. But there is no reason to do with-
out this technology in future – even when
demands get even higher. This is because
Diametal is constantly developing the resin-
bonded grinding wheels further so as to sat-
isfy the growing demands made by customers
as optimally as possible.
The demands made on the quality of the
inserts are constantly rising – above all as
regards surfaces, chipping and contouring
accuracy. An ideal solution for this set of
problems lies in the resin-bonded grinding
wheels in the versions SPB215/216. They can
be used for most materials in the insert sector
– for carbide, CBN and PCD alike. This opens
up new possibilities for the customer in pro-
duction and in the processes of production:
very good feed rates can still be achieved in
the case of smaller grit sizes – and this can
be achieved with a very good tool life for the
grinding wheels.
ABRASIVES
INSERT GRINDING TOOLS OF THE LATEST GENERATION.Diametal develops tried-and-trusted products and technologies further and adapts them to today's requirements. One example is the company's resin-bonded grinding wheels that meet the highest demands in terms of productivity.
Diametal provides perfected solutions in
the following bonding systems: synthetic
resin, metal, vitrified, metal-vitrified, and
electroplated. In addition, Diametal sup-
ports customers in their process optimisa-
tion with its engineering and consulting
services.
Further info:
Tel. +41 32 344 33 33
Contact: Andreas Dreyer
THE DIAMETAL EXPERT TIP
DIAMETAL 3
Korngrösse SPB215 SPB216
D91-D39 ideal möglich
D30-MD20 Möglich, anwendungsabhängig Möglich, anwendungsabhängig
MD18-MD10 möglich ideal
ABRASIVES
Application example 2
Performance features SPB216
Grinding of a curved line
with the wheel edge
· VCGT160408 fine grain carbide
· Cut volume per insert 70 mm3
· Cycle time 75 s
· Cooling medium water synthetic KSS 5%
· Wheel MD20 100 SPB216 350x10x6
· Wear per insert 0.15 µm
· 40,000 workpieces with 6 mm grinding
wheel rim
· Radius reference value 0.5 mm
The new standard stock pro-
gramme: Diamond and CBN
grinding wheels Version 2010
We’ll send you a copy.
Mail us with your address:
Diagram 1: Conventional grinding wheel Diagram 2: SPB215
Radius with conventional wheels:
No stability of shape
Radius with MD25 SPB215:
Very good stability of shape
The advantages for you at a glance:
1. Large feed rates can be achieved with smaller grit sizes.
2. High dressing intervals and hardly any in-process cleaning required.
3. Long tool life when the correct parameters are applied.
4. Very stable corners in corner-grinding applications.
5. Ceramic, carbide with CBN corner, full CBN and PCD can be ground
with the same wheel.
6. Suitable both for oil or water (emulsion) cooling.
Blank
Already ground
and finished
Secondary surfacePrimary surface
Still to be abraded
Application example 1
Performance features SPB215
NOW AVAILABLE
4 DIAMAIL 1|10
TOOLING /CARBIDES&CERAMICS
THE CONIXS HOB CUTTER SOLVES A LOT OF PROBLEMS.The solution for conical gear teeth from module 0.03 mm onwards is called CONIXS: the new hob cutter from Diametal delivers outstanding results and is extremely efficient and economical.
In collaboration with customers, Diametal
develops optimal solutions for their needs –
such as the new CONIXS hob cutter. Up to
now, the possibilities for the high-quality gear
cutting of bevel gears and pinions in the case
of small modules were somewhat limited. One
possible production process is wire-eroding.
This method is expensive and calls for specific
equipment and tools. For this reason, Diam-
etal is now bringing an alternative tool onto
the market: the CONIXS hob cutter.
Many of Diametal's business partners pos-
sess a conventional gear-cutting machine or
an ultra-modern automatic lathe with a gear-
cutting module. That is why the emphasis has
been placed on a rational and cost-effective
solution during the development of the new
tool. With success! The CONIXS cutter has
recently joined our range of products. Up to
now, this range has comprised hob cutters
for epicyclic and involute teeth. Now the new
hob cutter for conical tooth profiles has joined
their ranks.
The new CONIXS is based on the hob method
and can be manufactured with any kind of
profile (for instance with customised profiles
or standard profiles such as NIHS 20-25, NIHS
2002, DIN 867 etc.). It is available from mod-
ule 0.03 mm onwards and from a diameter of
8 mm onwards.
Depending on the geometry and dimensions
of the profile on the gears/pinions, Diam-
etal determines the optimal number of the
radial teeth (2 to 7). The new product con-
sists of carbide – the carbide grade and any
necessary coating is defined according to the
workpiece. Further features: rake angle in the
centre, logarithmic relief, and both left- and
right-cutting.
DIAMETAL 5
TOOLING /CARBIDES&CERAMICS
The first users of the new CONIXS hob cutter
are extremely satisfied with the result. One
of the reasons is that Diametal also offers its
services and shares its know-how in the de-
velopment of the teeth on the workpiece. If
they want to, customers can pace the entire
development in the hands of Diametal – from
the determination of the profile, over the in-
terplay of the toothing, to the calculation of
the angular impact and other requirements.
The 3D designs in CAD that Diametal provides
its customers with are highly valued. These
construction drawings can be directly adopt-
ed and worked on by the customers' technical
departments. Workpieces produced with this
method always match the 3D designs from
Diametal.
As usual, we are also able to simulate the
meshes and gear tooth contacts in the 3D
models for the CONIXS applications as well.
Try out our services and test our expertise
– we look forward to every challenge!
Tel. +41 32 344 33 33
Contact:
Beatrice Stegmann
MORE INFO
6 DIAMAIL 1|10
INTERNATIONAL
Diametal works successfully for the world-
wide aviation and space travel industry – and
has been doing so for more than two decades.
All employees involved are used to keeping
strictly to predefined processes and carrying
out all aspects of their work with precision.
This is – among others – a stringent demand
made on suppliers to the aerospace industry;
after all, human lives can be at stake here.
It is for this reason that the Aerospace Stan-
dard ISO 9100 was developed. It is based on
the ISO 9001 standard but has stricter regula-
tions as regards the archiving and traceability
of process data. Diametal has implemented
all these specifications and has process-re-
lated homologation (accreditation). The ob-
servance of the stipulations is periodically
checked and audited not only internally but
also by an external body.
Quality assurance is a matter for decision at
the highest level at Diametal. It is probably for
that reason that the requirements of the Aero-
space Standard were fulfilled so quickly. Di-
ametal has, after all, been certified according
to the ISO 9001 norm for a long time already
(it is also certified according to ISO 14001 and
OHSAS 18001, by the way). That’s one of the
reasons why strict compliance with processes
is second nature to Diametal staff.
The know-how the company has gathered as
a partner of the aerospace industry, where
the narrowest of tolerances are standard, also
informs all the other areas of Diametal’s ac-
tivity. The many years of experience gained
by the specialists at Diametal pays off for the
customers in every single order or project –
day in, day out.
DIAMETAL TAKES TO THE AIR.
Diametal has been working for the aerospace industry as well for many years. The demands in this sector are high, the tolerances are tight. But that is exactly where precision and know-how prove their worth.
DIAMETAL 7
FLASH
Two happy pieces of news to start the year
The Swiss team with Dimitri Jungo finished the
first-ever World Team Championship for pool
billiards in Hannover, Germany with a strong
5th place result. Switzerland entered this tour-
nament as underdog and proved with strong
performances that it can keep up with the top
ten countries in the world. The team has done
the Swiss billiard nation proud. It left nations
like the USA, Holland and Finland, and Ger-
many’s number one team behind it – countries
that have constantly been among the best in
the world for many years! We heartily congrat-
ulate the team for this excellent achievement!
At the election of the Seeland Sportsperson
of the Year, the 2009 European Champion in
Straight Pool Dimitri Jungo was visibly thrilled
with the win of his second place, even though
– ambitious as always – he would have pre-
ferred to be standing at the very top of the
winners’ rostrum. The award was won by
the hurdler Marc Schneeberger and Christian
Stucki (Swiss wrestling) occupied 3rd place on
the podium.
DIMITRI JUNGO: SUCCESSFUL START TO 2010!
Relaxed after the award ceremony:
Dimitri Jungo and his wife Hanane
Dimitri Jungo with his cheque
High-calibre jury of experts: curling
Olympic champion Daniel Müller enjoying
the sporting atmosphere
Advisor Mario Ugolini and Dimitri Jungo
8 DIAMAIL 1|10
PREVIEw
DIAMAIL is a publication from DIAMETAL
Ltd., DIAMETAL France SA, DIAMETAL
Italia S.R.L. and DIAMETAL Precision
Tooling (Nanjing) Ltd. DIAMAIL appears
four times a year in the following lan-
guages:
German 2000 copies
French 1500 copies
English 800 copies
Editors
Tooling, Carbides & Ceramics:
Stefan Rötheli,
Abrasives:
Beat Gilomen, [email protected]
Editorial, international:
Daniel Brügger,
Flash, preview, coordination,
contact: Anne Christelle Scholl,
Concept, texts and layout:
textatelier.ch and marscom.ch
Please mail any requests for additional
copies or issues, any questions you may
have, and any notification of changes of
address to: [email protected]
DIAMETAL Ltd.
Solothurnstrasse 136
CH-2500 Biel/Bienne 6
Tel +41 (0)32 344 33 33
Fax +41 (0)32 344 33 44
www.diametal.com
Printed on environmentally friendly paper
from controlled forest cultivation.
SIAMS 2010
CH – Moutier
4– 8 May 2010
Hall 1.2, Stand C10
www.siams.ch
Diametal will be welcoming you to its
stand – and will be presenting its new
hob cutter conixs for conical gear teeth
from module 0.03 mm onwards! You
can also get to know our trade show
partners LAN Computer Systems AG,
Biel and BroTec AG, Selzach!
www.lan.ch
www.brotec-ag.ch
EPHJ 2010
CH – Lausanne
8–11 June 2010
www.ephj.ch
Diametal will be presenting a broad
spectrum of its tools for the watch
industry.
CIMES 2010
CN – Beijing
14–18 June 2010
www.cimes.net.cn
Diametal is continuously expanding its
presence on the Chinese market and will
be presenting itself and its tools at the
China International Machine Tool & Tools
Exhibition
IMPRINTTRADE SHOWS
EXPERT TIP
Show us who's the best negotiator
around! You'll find our promotion list
on www.diametal.com. This contains
articles from all our product groups
and divisions that we are offering to
you at attractive special prices.
The best thing about it: the more
skilfully you negotiate with us,
the cheaper you'll get the article
you want.
We'll be rewarding the top per-
formances here with up to 80%
discount!