Optics & Micro - Watch cases

Diverse manufacturing processes? Of course! EMUGE clamping technology is also available for turning and milling optical & micro components.

Clamping technology for watch production


Sporty or extravagant, filigree or impressive, analogue or "smart" - the designs of wristwatches are diverse. Wristwatches are daily companions as a fashion accessory, sports equipment or simply as a timepiece.
Classical wristwatches in the higher price segment are distinguished by precious materials and an infinitely scalable elegance. High-quality workmanship and artistic refinement result in appealing aesthetics. The impressive craftsmanship of a watchmaker is the basis for such quality.
High-quality wristwatches are considered timeless despite all the technical development even without smart technology.



The visual and functional contrast to this are smartwatches: Features such as navigation, messenger, sports tracker and many more make them more than just a stylish alternative to the classic wristwatch.

Whether smart or not - the shapes of watch cases are diverse: classically round, sometimes angular, sometimes with curvature. Complex designs are the rule rather than the exception these days and the result of a complex manufacturing process. The basic building block of a wristwatch, in the case of solid and high-quality models, is always a sturdy metal case that has to be shaped. Many work steps are therefore required before the finished watch case fits snugly on the wrist.

A mandrel from EMUGE-FRANKEN is used to clamp the watch cases for milling.

Precision is required here

Precision has always been associated with watch movements, just as it is with the clamping technology of
EMUGE-FRANKEN.  We develop convincing solutions for a wide range of applications and complex challenges. Our employees are the experts when it comes to finding the decisive micron that makes the difference.

The watch case is clamped with a mandrel to machine it into shape. In the case of mechanically operated watches, the holes or cut-outs for the spring bar and crown must be manufactured micron-accurate. Precise and reliable clamping is essential for this process.

Mandrel for milling

The clamping is initiated by means of a threaded pin with a defined torque. A tilting mechanism pulls the drawbar and clamping bolt downwards. The pulling movement expands the collet and fixes the workpiece.
Seals at critical points ensure that chips and coolant cannot penetrate the inside of the clamping device.
Interesting side aspect: The clamping plane of the collet, like the watch case, is rectangular.

Who adjusted the watch?

No, it is not too late:
Our contact persons will be happy to explain this project to you personally and are also available to answer your questions!