Machining fixture for parallel holes and coaxial holes

The utility model discloses a machining fixture for parallel holes and coaxial holes. The machining fixture for the parallel holes and the coaxial holes comprises a bottom plate and is characterized in that a support column group is arranged on the bottom plate, a fixture plate is arranged on the support column group, a bearing seat, fastening bolts and supporting bolts are arranged on the upper side of the fixture plate, an adjustable press plate is arranged on the upper sides of the supporting bolts, the fastening bolts penetrate through the adjustable press plate, a fastening nut is arranged at the upper end of each fastening bolt in matched mode, and positioning pins are arranged on the bearing seat. According to the machining fixture for the parallel holes and the coaxial holes, the height of the machining fixture is increased, the bearing seat is used for supporting a workpiece, the workpiece is positioned through a cylindrical positioning pin and a diamond positioning pin, and the fastening nuts and the adjustable press plate can be used to position the workpiece accurately and fix the workpiece on the machining fixture. The workpiece has the advantages of being accurate in position and firm in clamping and positioning.