The invention discloses a
processing device for drilling and milling an
internal cavity by refitting an ordinary horizontal lathe, and relates to the technical field of mechanical
processing. The device includes an ordinary horizontal lathe, a first three-jaw chuck, a lathe guide rail, a large
pallet, a middle plate, a 360-degree rotatable indexing disc, a second three-jaw chuck, a gear box and a drilling and
milling cutter chuck, wherein the ordinary horizontal lathe is provided with the first three-jaw chuck and the lathe guide rail, the first three-jaw chuck is connected with the gear box through a first shaft, and the lathe guide rail is provided with the large
pallet capable of doing linear motions along the guide rail, and the large
pallet is provided with the middle pallet capable of fixedly
processing workpieces; the 360-degree rotatable indexing disc is provided with the second three-jaw chuck which is fixed with the gear box through a connecting rod, and the bottom of the gear box is provided with the drilling and
milling cutter chuck through a first bolt and a first nut. The processing device for drilling and milling the
internal cavity by refitting the ordinary horizontal lathe has the advantages of firm fixation, effective achievement of
internal cavity processing of parts, achievement of
product design requirements, strong practicability, and easy popularization and application.