System for machining a bevel

摘要

A system for machining a bevel on a disk shaped part including a grinding device having an abrasive, a device for securing the part including a support to which the part is fitted and which is integral with an axis of rotation. The securing device further includes a system for orienting the axis of rotation to define the angle of the bevel and a system for moving the support closer to the abrasive in order to machining the part under stress. The invention concerns the field of crystals for timepieces.

主权项

1. A system for machining a bevel on a watch crystal, said system comprising:
a grinding device configured to form said bevel at an angle on said watch crystal, said grinding device comprising an abrasive strip, a securing device for securing the watch crystal, said securing device including a support configured to support said watch crystal and defining an axis of rotation, the securing device further including a mechanism for orienting the axis of rotation and configured to define the angle of the bevel to be formed by said grinding device, wherein the securing device includes a horizontal slide for moving the support transversely relative to the abrasive strip, and a mechanism for moving the support closer to the abrasive strip, so as to machine the watch crystal under stress, wherein the abrasive strip is movable and rotably mounted in order to improve machining, and wherein, underneath the area of contact between the abrasive strip and the watch crystal, the grinding device includes a resilient device for maintaining the contact between the abrasive strip and the watch crystal.