Chapter I - FUNCTIONAL DESCRIPTION
I-2 Planmeca Proline EC X-ray unit
MECHANICAL CONSTRUCTION AND OPERATION
Technical Manual
1.1 Rotational mechanism
The rotating mechanism is designed so that the X-ray beam passes the patient’s teeth and
temporo-mandibular joints in an optimal way throughout the excursion.
The geometry of the driving groove of the block (Fig. 3, 4) is as follows. The groove has the
shape of a curve of a circle symmetrically to both directions from the center the driving groove
to ± 25° turning angle (point A being the center of the circle). From ± 25° turning angle to ±
85° turning angle, the radius of the shape of the groove varies and reminds of an evolvent
curve. Thereafter the groove follows the tangent of the curve.
Figure 1
25 °
80 °
To Next Page
Loading...
