Motor control module of nc carving and milling machine tool

CNC carving and milling machine tool in processing, the need to X, Y, Z three directions of high speed and high precision motion, spindle maximum speed of 24000 r/min. CNC carving and milling machine tool system of motor control module as shown in the figure below, its core part is composed of DSP and level conversion module. DSP chip choose TI company's 16-bit fixed-point DSPTMS320LF2407A as nuclear core processor. System requires three pulse signals by LF2407A event manager ( EVA and EVB) PWM module port. The axis of rotation direction signal is the responsibility of the LF2407A I/OPC5 - digital I/O port I/OPC7 provided. Because LF24O7A output to 3. 3 v level, and the drive is usually 5 v interface, the need to level conversion, therefore choose IDT74FCT164245T chip, the chip can complete 16 channel 3. Two-way between 3 v and 5 v level conversion, a transformation only need a few nanoseconds, input frequency up to 10 m, can satisfy the requirement of high frequency pulse signal conversion system. Spindle speed is by voltage analog output module to the inverter voltage analog output spindle rotation. CNC carving and milling machine motor control module