A fixture device for
machining Niemann worm gears using seven-axis five-linkage
CNC milling includes a fixture support friction-reducing disc. An oil spraying
lubrication assembly is floatingly and fixedly mounted on the upper surface of the fixture support friction-reducing disc. The lower surface of the oil spraying plate has multiple through holes. A clamping
assembly is fitted onto the fixture support friction-reducing disc through these through holes, facilitating high-speed rotation around the central axis following the friction-reducing disc. A lifting column
assembly is fixed to the oil spraying
lubrication assembly, a
tailstock support assembly is fixed to the lifting column assembly, and a circumferential limiting assembly for the oil spraying plate is fixed to the ground inside the
machine tool's working chamber. This invention is used for milling Niemann series worm gears on a seven-axis five-linkage CNC
machine tool, ensuring smooth side milling and preventing worm gear deformation. The adjustable length of the lifting column assembly and
tailstock support assembly allows the fixture to adapt to the
machining of worm gears of various geometric sizes and shapes, highlighting the adaptability and versatility of the fixture for vertical milling of worm gears.