4 Techniques for Press Brake Controller Return | MachineMFG

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4 Techniques for Press Brake Controller Return

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The methods for a press brake controller to return to the reference point can be categorized into:

4 ways for press brakes controller return to the reference point

(1) The homing axis is manually returned to the origin by moving it at the rapid traverse speed set by the parameter.

When the slow down switch of the origin point is activated by the slow down block, the homing axis slows down to the slower reference point positioning speed set by the controller and continues to move forward.

Upon release of the deceleration switch, the CNC press brake system starts detecting the encoder’s gate or zero pulses.

Upon detection of the first gate or zero pulse, the motor stops rotating immediately, and the current position is considered the dead-center position.

(2) The homing axis is moved to the origin at the rapid traverse speed set by the parameter.

When the slow down switch of the origin point is activated by the slow down block, the homing axis slows down to the slower reference point positioning speed set by the controller and moves in the opposite direction.

Upon release of the deceleration switch, the CNC press brake machine system starts detecting the encoder’s gate or zero pulses.

Upon detection of the first gate or zero pulse, the motor stops rotating immediately, and the current position is considered the dead-center position.

(3) The homing axis is moved to the origin at the rapid traverse speed set by the parameter.

When the slow down switch of the origin point is activated by the slow down block, the homing axis reduces its speed to the slower reference point positioning speed set by the controller and moves in the opposite direction.

Upon release of the deceleration switch, the homing axis returns to the dead-end and moves in the opposite direction again.

Upon activation of the deceleration switch once more, the homing axis moves at the speed for searching pulse and the CNC press brake controller starts detecting the encoder’s gate or zero pulses.

Upon detection of the first gate or zero pulse, the motor stops rotating immediately, and the current position is considered the dead-center position.

(4) Upon receipt of the zero-return signal, the homing axis moves in a fixed direction at a slow speed from its current position.

The CNC controller begins detecting the encoder’s gate or zero pulses simultaneously.

Upon detection of the first gate or zero pulse, the motor stops rotating immediately, and the current position is considered the dead-center position.

In case of a malfunction with the press brake controller’s return to the reference point, the first step is to check the tightness and condition of the slow stop block and the deceleration switch. The length of the slow down switch and its installation position should also be checked, as well as the pulse encoder or grating ruler, etc.

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