Analyze the supply voltage and movement status of the vertical car

The rapid development of the electronics industry has led to an endless stream of variable-speed drives with a high degree of integration and leading functions. This has provided favorable conditions for the upgrading of CNC machine tools. However, the current large- and medium-sized enterprises have not been able to retrofit all the old CNC machine tools and repair them. The old driving system is still a difficult task on the repair front.

The current CNC lathe heavy-duty lathe should have high load-bearing, high-speed, high-efficiency, high-precision, high-automation and other characteristics. The machine tool's skill and features include machine layout, process adaptability, precision, application reliability, and humaneness. Some of the main movements: thyristor-powered wide-ranging magnetic DC motors, after a two-speed planetary gearbox, the stock operating platform reversed. The radial direction of the workbench is centered on high-precision double-row cylindrical roller bearings. The axially-selected preloaded constant-current static pressure guides are equipped with temperature control and temperature maintenance devices. The appropriate flow rate can be selected according to the load and temperature. When the machine tool suddenly lost power, it was thought about using an accumulator for static pressure and power off maintenance. The hydrostatic pump station has two accumulators, which can still supply the hydrostatic guide rail with oil for 15 seconds after a sudden power failure to avoid damaging the guide rails.

The machine tool has the following kinds of power supply voltages: AC110V voltage for driving the communication touch device, AC24V voltage for lighting, AC6V voltage for indicating light, and 65V-75V-85V braking power for main motor braking. The power supply for the CNC-H4-T CNC system and the AC220V required for the switching power supply GS are supplied by the transformer TC3. The three-phase AC220V power supply required by the servo driver is supplied by the drive transformer TC2. The DC 24V of the I/O signal, the enable signal, and the DC 24V of the Z-axis brake motor are supplied by the switching power supply GS.

The machine table has the following kinds of movement conditions: The main motor M1 of the work table has two kinds of operation conditions, one after another and one by one. When the jog operation is stopped, there is no braking process. When the continuous operation is stopped, there is a braking process. The main motor of the workbench is a two-speed motor, so it is divided into high and low speeds. The work station has high and low speeds when it is running one after another, and it only needs to be slow when jogging. Tool holder transverse (X axis) motion is driven by servo motor M2. The vertical direction (Z axis) of the carriage is driven by servo motor M3. To prevent the gravity effect of the carriage from being stopped due to inertia, the motor M3 has a brake.