Fixture capable of being compatible with machining of various vehicle steering knuckles

The utility model discloses a fixture compatible with processing of various vehicle steering knuckles, which relates to the technical field of steering knuckle processing, and comprises a shell used for installing the fixture and the steering knuckles; the first clamp structure is installed on the inner wall of the shell and used for positioning the outer circle part of the steering knuckle; the second clamp structure is installed on the inner wall of the shell and used for positioning the short arm part of the steering knuckle; the third clamp structure is installed on the inner wall of the shell and used for positioning the long arm part of the steering knuckle; and the exhaust component is used for cleaning impurities on the surface of the steering knuckle so as to improve the positioning and clamping effect. The steering knuckle positioning device not only can be suitable for positioning various steering knuckles with different lengths, thicknesses and sizes, but also can perform multi-area positioning on