Clamp

The clamp comprises a base, a limiting seat and a driving seat are arranged on the two sides of the base respectively, a sliding rail is arranged on the base in the length direction, the sliding rail is connected with a positioning block in a sliding mode, and the positioning block is used for being matched with the limiting seat to position a workpiece. A telescopic rod and an air cylinder are arranged between the positioning block and the driving base, the telescopic rod can stretch out and draw back in the length direction of the base, a graduated scale is arranged on one side of the base and used for measuring the position of a workpiece, and a fixing mechanism is detachably connected to the bottom of the base and used for fixing the base to a table top. Compared with a traditional clamp, the base can be fixed to any table top through the fixing mechanism, the clamp is convenient to assemble, disassemble and fix, and the fixing mechanism is detachable, so that the fixing mechanism is convenient to separat