Variable-specification fixture for fixing 'T'-shaped or 'L'-shaped section bar

The invention relates to the machining technical field of fixing fixtures for machining 'T'-shaped or 'L'-shaped section bars, and discloses a variable-specification fixture for fixing a 'T'-shaped or 'L'-shaped section bar. When the 'T'-shaped or 'L'-shaped is clamped and fixed, different gestures corresponding to tooth-shaped cushion plates can be changed by means of adjusting adjustable bolts at different positions, the fixing fixture which has different sectional shapes and is used for machining the 'T'-shaped or 'L'-shaped section bar can be quickly adjusted, and fixing requirements for machining various 'T'-shaped or 'L'-shaped section bars with different thicknesses and changeable thicknesses are met. The changeable fixture replaces various special fixtures, storage occupied spaces and management workload for the fixtures are reduced, manufacturing period of a product is shortened, production efficiency is improved, and production cost is lowered.