The reason why the hydraulic bending machine can't start and the treatment method

The reason why the hydraulic bending machine can't start and the treatment method

A: hydraulic bending machine classification:

1. Bending machine is divided into straight knife bending machine and disc knife bending machine according to the shape of scissors. Straight knife bending machine is divided into gantry bending machine and throat bending machine according to the structure. Disk knife bending machine is divided into disk bending machine, rolling shear machine, multi-disk bending machine and rotary trimming bending machine.

2. According to the movement trajectory of the tool rest classification bending machine according to the movement trajectory of the tool rest is divided into the following kinds:

(1) The tool rest moves along the vertical line. Because there is no rake Angle, the section of the upper blade must be processed into a diamond shape, so there are only two edges (rectangular blades with four edges can also be used, but the shear quality is poor). The fracture of the tool rest shear is not a right Angle to the surface of the plate.

(2) The tool rest moves along the forward dip line (the Angle between it and the vertical line is 1°30 '~ 2°). The section of the upper blade can be processed into a rectangle, with four blades, and the shear fracture is basically at right angles to the plate surface.

(3) The tool rest swings along the arc line, and the section of the cutting blade should be processed into a diamond shape, so there are only two blades. Because the upper blade leans slightly forward in the shearing process, the shearing quality is similar to the movement of the tool rest along the forward line.

(4) The tool rest swings along the arc line, and the rake Angle can reach 300, so the welding groove can be cut

3. According to the way of transmission classification bending machine according to the way of transmission is divided into: mechanical transmission bending machine and hydraulic shear trigger

Two: possible reasons for the failure of the hydraulic bending machine oil pump to start:

1. The start, stop or emergency stop button of the oil pump is damaged.

2. Overload protection thermal relay is damaged.

3. Ac contactor coil is open or damaged.

4. The wire head of the three-wire AC loop is loose or damaged.

5. The oil pump motor is damaged or the wiring connector is loose and falls off.

Solutions:

1. Check the corresponding electric shock or replace the corresponding button.

2. Reset or replace the thermal relay after finding out the cause and troubleshooting.

3. Replace the coil or AC contactor.

4, check the relevant circuit wire head, reconnect.

5. Check the wiring head or replace the oil pump motor.