Simple lathe fixture

The utility model discloses a simple lathe fixture comprising a lathe chuck clamping jaw (1) and a fixture (2), wherein an axial hole is formed in the fixture (2) so that the fixture (2) is axially and equally divided into a fixture I (21), a fixture II (22) and a fixture III (23); the fixture I (21), the fixture II (22) and the fixture III (23) are respectively and fixedly arranged on the lathe chuck clamping jaw (1); and the two adjacent side faces of the fixture I (21) and the fixture II (22) are symmetrically provided with a semicircular groove I (31) and a semicircular groove II (32). Due to the structure of the simple lathe fixture disclosed by the utility model, the structure and the manufacturing are simple; and right-angle joint components with various types and specifications can be firmly assembled, so that the workpiece machining is convenient and reliable, the requirements of product quality are ensured, and the working efficiency is largely improved.