Tool clamp of coding machine

The utility model relates to the technical field of coding machines, in particular to a work fixture of a coding machine, which comprises a coding machine base, a shell is fixed on the coding machine base, an opening is arranged at the top of the shell, a fixed base is arranged in the shell in a sliding manner, a baffle plate is arranged on the adjacent edge of the end surface of the fixed base in an extending manner, and the baffle plate is arranged on the top of the shell. A groove is formed in the lower end of the inner side of the baffle, two contact type sensors are arranged on the outer side of the baffle, and probes of the contact type sensors are arranged on the inner wall of the groove. Through the design of the baffle and the groove, stable fixing of the nameplate can be guaranteed, and the universality and interchangeability of the clamp are improved; and the fixing position of the nameplate is automatically sensed through the contact type sensor, so that the positioning accuracy of the nameplate p