4 ways for press brakes controller return to the reference point

 

The way of press brakes controller return to the reference point can be divided into the following:

1. When returning to the origin point manually, the homing axis is moved to the origin by the rapid traverse speed set by the parameter;

When the slow down switch of origin point is pressed by slow down block, the homing axis reduce the speed to slower reference point positioning speed which is set by the controller, continue to move forward;

When the deceleration switch is released, the CNC bending machine system begins to detect the encoder’s gate or zero pulses.

When the system detects the first gate or zero pulses, the motor immediately stops rotating, the current position is the dead-center position.

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

When the slow down switch of origin point is pressed by slow down block, the homing axis reduce the speed to slower reference point positioning speed which is set by the controller, the axis moved in the opposite position;

When the deceleration switch is released, the CNC bending machine system begins to detect the encoder’s gate or zero pulses.

When the system detects the first gate or zero pulses, the motor immediately stops rotating, the current position is the dead-center position.

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

When the slow down switch of origin point is pressed by slow down block, the homing axis reduce the speed to slower reference point positioning speed which is set by the controller, the axis moved in the opposite position;

When the deceleration switch is released, return to dead-end axis move in opposite position again;

When the deceleration switch is been pressed down again, return to dead-end axis move at the speed for the searching pulse, press brakes controller start to detect the encoder’s gate or zero pulses.

When the system detects the first gate or zero pulses, the motor immediately stops rotating, the current position is the dead-center position.

4. When the homing axis received the zero-return signal, it moved to one fixed direction in slow speed at the current position.

Meanwhile, CNC controller begins to detect the encoder’s gate or zero pulses.

When the system detects the first gate or zero pulses, the motor immediately stops rotating, the current position is the dead-center position.

When there is malfunction for press brakes controller return to the reference point, first check whether the slow stop block is loose or not, deceleration switch is firmly fixed or damaged.

Check the length of the slow down switch, whether the installation position is reasonable; check the pulse encoder or grating ruler and so on.

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