"Crocodile" belt tensioner for MaXYposi

prusaprinters

<p>This is a belt tensioner for the diy cnc-machine "MaXYposi". I can be used to replace the two aluminium tension blocks of the x-axis. It will fit the standard x-axis - so no extra holes are needed.</p> <p>The tensioner for the y-axis is available in two different design (2- or 3-holes for fixation).</p> <p>Update:</p> <p>14 Feb 2018:</p> <p>Uploaded x-axis tensioner v2 with "through" holes for tensioner screw and nail.</p> <p>Uploaded y-axis V1 Revision1 - Tensioner with modified mounting holes.</p> <h3>Build Instruction</h3> <p><strong>Bill of materials</strong></p> <div><ul><li>1 printed 3d part</li> 3 nails (3,8 x 80 mm) two for x-axis, one for y-axis 2 M4 nut, one for each axis 2 M4 x 50 screw , one for each axis 2 M4 x 40 screws (flat head) for fixing the tensioner onto the x-axis sleigh 2 or 3 screws 3,8 x 50mm, round head, for fixing the y-axis tension on the wooden base <p>Print out the 3D file (0,3mm slices and 20 - 25 percent infill should do it)</p> <p>Bend about 25mm ot each nail in a 90 degrees angle.</p> <p>Cut one nail to fit the side length of 20mm x 30mm.</p> <p>Cut the other nail to fit the side length of 20mm x 20mm.</p> <p>Place the in the slot (of the 3D part) adjacent to the end with two 4mm holes.</p> <p>Put the screw in the upper hole (closest to the slot) and screw it through the nut.</p> <p>Insert the longer nail part from inside the slot (through the lower 4mm hole).</p> <p>The other nail goes to the other side of the slot (where the inner 4mm hole is).</p> <p>Bend the ends of the belt to tight loops and insert them from each side into the slot.</p> <p>The nail ends must fit into the loops. Now you can adjust the tension of the belt by turning the screw.</p> <p>The tensioner for the y-axis is more or less a half of the x-axis and is assembled accordingly.</p> </ul></div> Category: Parts