Planmeca Proline CC, Technical Manual

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Chapter I - FUNCTIONAL DESCRIPTION
Planmeca Proline CC panoramic x-ray I-3
Technical Manual
The rotating unit (Fig. 2, 7) is attached with bearings to the upper horizontal part by means of a
cam (Fig. 2, 1). For both axles of the cam there are two angular contact ball bearings (Fig. 2, 2)
which are preloaded without clearance by means of nuts (Fig. 2, 3).
The cam has two main tasks: Firstly, it transfers the weight of the rotating unit to the main block
(Fig. 2, 4) through bearings. Secondly, it determines the path of the bearing point B during the
rotating cycle. Apart from point B, the path of the rotating movement is also determined by drive /
guide point C. On the main block (Fig. 2, 4) there is a U-groove and a guide wheel (Fig. 2, 5) rolls
along the inner edge of the groove. The bearing point of the wheel is fixed in relation to the rotat-
ing unit (Fig. 2, 7). There is also a driving wheel (Fig. 2, 6) which is concentrically located in rela-
tion to the bearing point. The fixing point of the driving wheel (transmission) is located so that the
driving wheel can move unhindered crosswise in relation to the groove.
The mechanism has a loading spring (Fig. 2, 8) which forces the driving wheel against the outer
edge with great pressure.
Figure 2
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4
3
2
6
5
7
8
2
3
2