Hans Low Power Lasers

Lead screws provide very accurate precision for motion systems.  The lead screw is manufactured on the precision lathes with tight tolerances.  The trade-off is that lead screws are slower than belt drives, which are extremely light weight and fast.  The lead screw must rotate with a nut moving along with it.  There is a limitation as to how fast the lead screw can turn before the screw vibrates and in extreme cases causes a whipping action.  Lead screw machines are limited in speed by the manufacturer to prevent any loss to accuracy. The limitations are set in velocity, acceleration and deceleration.

The lead screw motion systems below provide motion in several methods.  One method, is where the one lead screw moves a gantry from one side of a table to the other.  The second lead screw moves the laser focus head back and forth along the gantry.  A second method is different from the one mentioned, because the table is moved underneath the gantry.  In the second method, the laser beam length is maximally changed by the length of the gantry.  Where, in the first method, the laser beam length to the focus head is changed maximally by the length of the table and its width.

For the machinery below, first select your laser type, then choose the machine, considering beam path variation and accuracy requirements.  It is important to note that a smaller table size is more accurate overall, than a larger table.