Z3040 drilling machine circuit

(1) Main circuit The spindle rotation and feed motion of the boom drilling machine are driven by an AC asynchronous motor Ml. The forward/reverse
rotation of the spindle is realized through mechanical conversion. Therefore, the main motor has only one direction of rotation. The construction range of the spindle of the 23040 radial drilling machine is
50 2 1. The minimum forward rotation speed is 40r/nun, and the maximum speed is 2000r/min. The feed i is around o. os~i. 60r/min. Its speed regulation is
achieved through a three-phase AC asynchronous motor and a gearbox. Some also use multi-speed asynchronous motors for dragging. This simplifies the shifting mechanism.
    In addition to the rotation and feed motion of the spindle, the radial arm drilling machine also has the raising and lowering of the radial arm and the clamping and relaxing of the column fishing. The rising and falling of the rocking duck
is driven by an AC asynchronous motor M2, and the clamping and loosening of the column is driven by another AC asynchronous motor M3. The 23040 rocking spring drill
machine drives a gear pump through an electric motor to supply the pressure sleeve required by the purple clamping device. The rotation of the sowing arm and the left and right movement of the main spindle box are usually
done manually. In addition, there is a cooling pump motor M4 to cool the processed tools. (2) Control circuit The electrical control circuit of
    the 23040 type boom drilling machine is shown in Figure 8. , M1 in the picture is the spindle motor, and M2 is the rocker arm lifting motor. M3 is the hydraulic pump motor, M4 is the cooling motor, and QF1 is the main power control unit.     1) Spindle motor control. The spindle motor Mi rotates in one direction and is started and stopped by buttons SB8, SB2 and contactor KM1 . For the forward and reverse rotation of the main shaft, the Ml motor drives the gear split to send out pressure oil, and through the hydraulic system control mechanism, it cooperates with the forward and reverse friction clutches to drive the main shaft to rotate forward or reverse.     2) Rocker arm rising and falling control. When processing the radial arm drilling machine, the radial arm is required to be in a clamped state to ensure the processing accuracy. However, when the rocker arm needs to be raised and lowered, the rocker arm is required to be in a loosened state. Otherwise, the motor load will be heavy and the mechanical wear will be serious, making it impossible to raise and lower the rocker arm. When the rocker arm rises or falls, the action process is issued by the lifting command. The rocker arm and the outer column are first released, and then rise or fall. When the lifting position is determined, they must be re-clamped themselves. Since the loosening and clamping work is realized by the hydraulic system, the lifting control must be closely coordinated with the hydraulic system of the elastic mechanism . . M is the lifting motor. The buttons SB3 and SB4 control the contactors KM2 and KM4 to turn on or off, causing the M2 motor to rotate forward and reverse, and drag the rocker arm to move up or down.   +M3 is the hydraulic pump motor. It is connected or disconnected through the contactors KM4 and KtVf5 to make the M3 motor rotate forward and reverse, driving the two-way hydraulic system to force out the pressure oil through the two-position six-way valve to the rocker arm central tightening mechanism. Realize clamping and loosening.   , ~q is the cooling pump motor, and its forward rotation is controlled by the manual transfer switch os.