When machining middles or other prismatic parts, centering is a delicate and time-consuming operation. Whether the operation is carried out on a lathe or on a machining center, the problem remains the same: clamping the part with equal pressure on all its sides in order to ensure perfect centering.
With a traditional collet the centering operation can become difficult if the X and Y dimensions of the part are not perfectly equal. In order to provide a solution to this recurrent problem for watchmaking manufacturers, the company Yerly Mécanique is presenting a system with four independent jaws arranged in pairs. Once the part is positioned, it is centered in two stages (X-axis and Y-axis), very easily and quickly, thus guaranteeing perfect centring.
All geometries are possible The four-jaw self-centering chuck is connected to its designated machine tool mechanically. The opening of the jaws is ensured by the machine’s collet opening system, which makes operation very simple for the user. The jaws are developed and machined to customer requirements by Yerly and can be used for all types of operations (see photos).
An advantage for robotics As centering no longer requires a high level of operator dexterity, manufacturers can rationalise part loading using robots, thus considerably reducing set-up time. Many manufacturers working in the watchmaking and medical sectors are interested in the YERLY clamping system.
Yerly Mécanique will be presenting this revolutionary system at the next EPHJ trade fair (Halle 12/Booth B2). YERLY MECANIQUE SA Rte de la Communance 26 CH-2800 Delémont Tél. 032 421 11 00 Fax 032 421 11 01 [email protected] www.yerlymecanique.ch
