Master program

Our most advanced clamping system

The main Master was born from an over gripping collet.

Following a specific request from one of our customers, who wanted an unusual clamp opening on his machines, we were asked to carry out a study.

Our knowledge of the recurring problems encountered by all our customers and this specific need have enabled us to design a new clamping concept: the Master system.

This Master system, initially developed to significantly increase the capacity of "standard" overgripping collets, has now been extended to all types of clamping and guiding applications, offering a number of incalculable advantages.

The master system is the resultof several years of research and development concerning all problems encounterd on turning machines tools .

Advantages

Waterproofing

Masters tooling is chip-tight thanks to its one-piece body.
On the visible side, in the machine's machining area, there are no gaps or
gaps large enough to allow chips to enter. This preserves the collet,
prevents the guide bushes from seizing up, avoids marking the parts and also avoids untimely
machine stoppages for cleaning purposes.

Clamping management

It is very difficult to clamp certain types of reworked parts with slotted collet without
deforming or marking them. Precise clamping management is not possible.
With Master collets, clamping is easily managed by adjusting the overhang of the
jaws in relation to the collets body. Clamping is limited when the cone of the collet (or of the cap of nose in the case of overgripping collet) rests against the body of the collet.

Precision

The rigidity of these various tools, the movement of the jaws perpendicular to the
spindle axis, and the precision of the adjustments between the various elements provide
unequalled machining precision.

Service life

Thanks to the coatings applied to the various parts of the tools, the rigidity of the
elements (no more deformations) and their protection through sealing, the service life of
all Master tools is greatly increased.

High pressure

All our tooling is designed to receive high pressure from the rear of the spindle. This
has the advantage of cleaning residual deposits from the inside and lubricating the jaws of
Master tools.

All forms accepted

The Master system enables us to clamp or guide all bar shapes or
parts.

Clamping parallel to spindle axis

The Master system offers a major advantage thanks to the perpendicular movement of the
jaws in relation to the bar axis in high-precision slides. This ensures
perfectly parallel positioning of the clamping or guiding surface of the
jaws in relation to the spindle axis, whatever their position in the guideway. In other words,
whatever the variations in diameter, the jaws are in contact with the bar over their entire length
.
This advantage ensures optimum precision on all types of bar or part, avoids
seizing, avoids marking of parts, enables clamping or guiding of a wide range of diameters,
enables machining of bars of all qualities (as-cast, as-rolled, etc.)..),
enables very short workpieces to be clamped without concentricity problems, allows the use of the
compensation system for guide bushes...

Flexible operation

The Master system's jaw-return principle makes the
system extremely flexible. Power losses to close the tooling in vacuum and
friction losses are minimized with these tools. In other words,
parts or bars are much better held with Master tooling.

Hardness

Master tools are fully PVD-coated. These
coatings offer numerous possibilities for adapting tooling to each application.
In the case of guide bushes, coatings ensure an extremely low sliding coefficient
and very high hardness (three times harder than the carbide currently used
). These characteristics prevent seizure and ensure a very
long barrel life.

No-load clamping without breakage

Master tooling has the advantage of being able to be clamped without any risk of
damage or breakage. When the collet is no-load clamped, the machine clamping cone
finds itself resting against the cone of the gripper's rigid body. In this configuration, as the
jaws do not touch, there is no risk of damage to tooling.

Ecological

The new Master tools are much more respectful of people and
the environment. The various coatings applied to the tools replace
the use of tungsten carbide and brazing alloy, which also contain
harmful elements.