Indexable inserts for Swiss type machines

Top form for
Swiss type machines.

Your Swiss type machining specialists: indexable inserts with PS geometries and high-positive indexable inserts for high surface quality.

No-compromise quality is required for indexable inserts to machine long thin workpieces. Top surface quality can only be achieved straight away by a combination of an ultra-fine grain substrate, precision ground cutting edges and highly polished chip breakers.

This is why ARNO developed indexable inserts with the PS geometry especially for Swiss type machines. They achieve excellent results and long tool life. If the requirement is for particular precision and top surface quality, our extremely sharp high-positive ASF, ACB, AWI and ALU inserts are the ideal supplement. That is why you do not have to compromise on precision, you’ll find we have a range of different corner radius, grades and both sharp and edge-honed inserts. In this way you can set up your Swiss type machine for any challenge.

Precision ground indexable inserts

We precision grind over 2.5 million indexable inserts with complex geometries every year. So we can guarantee you the best quality.

Exactly what you need – no compromise

Besides standard sizes we also offer you intermediate sizes, edge-honed inserts and special coatings. You’ll find tailor-made solutions at ARNO to meet every requirement.

Whatever we do, we do it right!

Since when has ARNO supplied indexable inserts specially for Swiss type machines?

It all began in the 1990s. At that time, we started to polish and grind high-positive indexable inserts to machine aluminium. The idea then occurred to us to also use the know-how we had gained for Swiss type machining. With materials that are difficult to machine and in the Swiss type machining sector, the general requirement is for tools with a clean sharp cutting edge. So we developed the PS chip-breaker for Swiss type machines with a ground cutting edge and polished chip breaker. It was unusual at that time. Up to 6 or 7 years ago, most Swiss type machine users ground their tools themselves since there was nobody else who could achieve the required precision.

What are the differences between an insert with the PS geometry and a high-positive indexable insert from ARNO?

The main difference is the rake angle – our high-positive indexable inserts have angles ranging from 18 to 25 degrees. The PS has an angle of about 11 degrees. This rake angle is ideal for machining very small parts. The cutting edge on the PS is straight and this is again better for deeper cuts. Raised high-positive cutting edges could cause score marks. And of course straight cutting edges are more rigid. Otherwise high-positive and PS inserts are very similar: They all consist of a special ultra-fine grain substrate, they are periphery ground and have a sharp cutting edge combined with a polished chip-breaker. This makes the inserts so sharp that the workpiece is not displaced, no matter how long and narrow it is. Together with the optimised design of the chip-­breakers, we achieve the perfect chip, i.e. shaped like the number six.

What has changed for indexable inserts for Swiss type machines since the 1990s?

Quite a lot. We have continuously expanded our portfolio. For example, all inserts come in a wide variety of corner radius. They start at 0.05 and go up to 3.0 mm. And there are also more combinations of grades and cutting edges. Meanwhile, we have FN inserts with extremely sharp cutting edges, both coated and uncoated. The latest product is an edge-honed insert for rough machining and it also comes with and without coating. The edge-honing has the advantage of prolonging tool life – and this is of course vital in view of steadily rising costs.

What can we expect in future?

When it comes to the topic of rough machining on Swiss type machines, we are in the process of developing something new in addition to edge-honed inserts: precision sintered inserts that can be pressed with such precision that they need no grinding. This makes their price attractive, but of course they can only be used in specific applications. Ground inserts will certainly continue to be needed for complex workpieces. And we are also expanding our range here. For example, at the AMB we presented inserts with undersize radius. And we are continuously expanding our grinding skills. Every year, we grind 2.5 million inserts, so naturally we have an enormous amount of experience here. When new requirements come up, we also test the geometries with different coatings until we find the best technology for a particular application. That is the way we do it at ARNO: whatever we do, we do it right.

Interview with: Josef Storf, Managing Director ARNO Werkzeuge,
talking about indexable inserts for Swiss type machining.

Precise benefitsfrom ARNO indexable inserts with the PS geometry and high-positive geometries

Top quality – the special indexable inserts for Swiss type machines are precision ground in-house at ARNO

Tailor-made solutions – besides standard sizes there are also many intermediate sizes and sharp and edge-honed inserts

Sharp cutting edges for demanding materials – ideal for thin-walled workpieces

Outstanding
services inclusive

Any questions? Contact your personal ARNO contact person:

Write now Or Call +44 01785 850 072 ARNO (UK) Limited
Unit 9, 10 & 11, Sugnall Business Centre
Sugnall, Eccleshall Staffordshire | ST21 6NF