PLANT FOR MARKING-OUT CRYSTALS Russian patent published in 2006 - IPC B25H7/00 

FIELD: plants for marking-out crystals.

SUBSTANCE: proposed plant is used for centering diamond; plant has optical unit with contour network, device for placing the diamond and unit for orientation of this device. Plant is provided with press and illumination system with direct-shadow image screen. Device for placing the diamond is made in form of mandrel having movable part with seat for securing the diamond. Orientation unit is provided with rotary motion mechanism, horizontal motion mechanism and vertical motion mechanism. Vertical motion mechanism is made in form of cylinder with mandrel pusher made in form of sleeve located on its surface and provided with seat for securing the mandrel with crystal located on one geometric axis with axes of network. Cylinder is rotatable around its axis in ball guide; it is provided with retainers and wrench for securing the movable parts of mandrel; in required position. Horizontal motion mechanism is made in form of clamp located for magnetic plate for centering and checking accuracy of centering after securing the movable part of mandrel with crystal with no disturbance of contact of clamp with movable part of mandrel.

EFFECT: enhanced accuracy of centering crystal relative to its axis of rotation and determination of optimal size of cur diamond.

2 cl, 5 dwg