Gear cutting machines are designed for machining of gears, worm gears and racks. It is not something Cardiologist would like to discuss. Depending on the used tools are distinguished hobbing, gear shaping, zubostrogalnye, zubootdelochnye (Gear Shaving, gear grinding, zubohoningovalnye, zubopritirochnye, zuboobkatochnye and zubozakruglyayuschie) machines. Gear cutting machines to carry out: roughing teeth, finishing teeth burnishing gears, finishing teeth, rounding the ends of the teeth. On gear hobbing machine cut spur, helical and herringbone teeth with wheels and worm gears. Most common in the industry vertical milling machines are available with moving table and fixed stand and with movable column and fixed table. When cutting gear rigidly connected to the workpiece worm wheel divider receiving the rotation of the worm pitch, which is interchangeable gears kinematically connected with the hob.
Speed ratio hob and workpiece determined by the gear ratio sets of interchangeable gear wheels. On the gear shaping machines cut bevel gears external and internal gears with straight and helical teeth, gear units, wheel clamp, gear sectors, spline shafts, racks, ratchet, etc. Usually, cutting is performed by running, at least – by copying. The most widely used in industry have vertical shapers. Cutting tool is the ram, which moves back and forth parallel to the axis of the workpiece. On zubostrogalnyh machines handle bevel gears with straight teeth on the method running one or two more incisors.
At planing machines play engages the gear being cut with an imaginary plane generating gear, with two teeth are the last zubostrogalnye cutters, reciprocating. The process of cutting teeth are moving to the top of the cone cutter blanks, and the reverse is blank (this period shall be disqualified from the incisors preparation). Bevel gears with circular teeth is carried out by running on special machines with gear-cutting tool head, which is a disc inserted in the periphery cutters, machining of the tooth profile on both sides (first half of the incisors handles one side, the other half – the other). Zuboshevingovanie (hedge-cutting) is performed on Gear Shaving machines. Based on mutual sliding of the teeth are in meshing tool and machined gear at oncoming traffic. According to the feeding direction are three methods zuboshevingovaniya: parallel, diagonal and tangent. Tool is the shaver – disk, rack and worm. The first two types – for treatment of spur gears, the last – for the worm. Gear Grinding Machines to produce processing gear break-in and profile by copying the shapes of the grinding wheel.