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23
Reference mark switch bracket and actuating cam
The reference mark switch is shown in figure 17 with fixing centres given. One reference mark switch
is required for each axis using a HS20 laser head. The mount for the actuating cam must allow the
position of the cam to be adjusted so that simultaneous switch operation can be achieved on split
axis machines. An adjustment range of ±5 mm should be sufficient as long as switches and cams are
accurately mounted to the machine with respect to one another.
The reference mark-actuating cam must be manufactured with an approach angle of 30°. Suitable
cams can be purchased directly from a balluff switch distributor.
Figure 17 - Reference mark switch outline drawing
Figure 18 - Reference mark actuating cam approach angle
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