It is necessary to choose a drill with a diameter Dc 1 mm larger than the cutter diameter. Maximum radial cutting depth 12 mm (at Dc = 50 mm). The number of teeth simultaneously participating in cutting must be equal to two.
The maximum infeed angle depends on the cutter diameter (for a Dc = 50 mm cutter, the infeed angle is 5). For maximum machining performance, select 12mm or 16mm inserts and a small pitch cutter.
Milling technology for parts with conjugate planes and polyhedrons. Mating surfaces of one part, that is, surfaces located in different planes, can be parallel, perpendicular, or located at any angle. Such planes include adjacent faces of a rectangular and square prism, cube, hexagon, pyramid, etc.
Processing of workpieces with conjugate planes is carried out on vertical and horizontal milling machines with end, end, and cylindrical mills, as well as sets of milling cutters. On the machine table, workpieces are fixed in universal or special devices.
When milling a square from a bar, the workpiece, depending on its length, can be fixed in one of the following ways:
* in a three-jaw chuck;
* in the three-jaw chuck and the centre of the tailstock;
* in the centres of the universal dividing head and tailstock. Milling the edges of the squares is done with end, end, and disc cutters.
When machining hexagons, high productivity can be achieved using a set of disc cutters. Machining of planes conjugated at acute and obtuse angles is carried out in the same way as for inclined planes. The relative position of the conjugate planes (parallel and perpendicular), machined with the resetting of the workpieces in the vice of a universal horizontal milling machine, is controlled by vernier callipers, and squares, curved rulers, and planers.
The planes located at obtuse and acute angles are controlled by templates and planers, regardless of which cutters are used for this processing: cylindrical or end cutters.
All programmable milling machines are equipped with the ability to adjust the power, the feed rate of the warp, and the choice of cutting mode. A wide range of settings allows you to use a wide variety of materials for cutting:
* wood, plywood, chipboard, fiberboard, MDF;
* PVC plastic;
* polystyrene, PET;
* acrylic and organic glass;
Xu Feng focused on CNC milling for over 15 years, we have rich experience in different structure and material milling, if you have any questions about it, feel free to contact us for the details.