To solve the problem of long period and high cost in fault diagnosis and in repairing process of broaching machine

a fault diagnosis system based on general packet radio service（GPRS）is studied.The overall structure

functions and workflow of the system are introduced

and the key points of design and implementation methods of the terminal subsystem on broaching machine and the central server are presented.The system structure of the terminal subsystem on broaching machine based on the microprocessor ATmega128 and the communication module Motorola G20 is introduced

and the method of data acquisition for main parameters of broaching machine operating is also described.