Small fault handling method of press brake machine

How to check the small faults of the press brake machine? It is inevitable that your press brake machine will have problems after long-term using.

No matter what machinery and equipment has been used for a long time, there will be some minor defects and minor problems,

even if it will not affect the work for a while, but if it not hand in time, Small faults can become big problems, so it is important to learn some simple and effective repair methods for press brake machines.

The CNC system displays abnormally when powering on

This failure generally causes by the software. Wrong operation or frequent abnormal shutdown during the operation process may cause the loss of files, thereby making the software unable to operate normally.

You can make a judgment based on the system’s prompts, and then decide whether to reinstall the software.

Slider movement failure

The slide motion of the bending machine can divide into four processes, which are zero return at start-up, rapid drive, working stroke and slide return.

The Y-axis change slider does not move: Measure according to the electrical schematic diagram to determine whether it is a hydraulic system failure or an electrical system failure.

If the servo valve energizes normally, it is a failure of the hydraulic system, otherwise it is a failure of the electrical system.

No fast forward of the slider: The fast forward of the slider which cause by the return of oil from the lower cavity,

and the negative pressure which forms in the upper cavity depending on the weight of the slider. It can also adjust as a hydraulic system failure according to the power status of the servo valve . It is still a fault in the electrical system, and then a targeted solution carry out.

Treatment method of deformation failure of slider of CNC bending machine

Debug the parameters of the Y-axis. The bending parameters of the CNC bending machine should adjust according to the actual situation. If the department gain is too small, the slider will not bend or bend in place, and the slider will jitter if it is too large, so the parameters also need to adjust.

When moving, the slider does not jitter, and the gain should be as large as possible; or the left and right valve offsets in the diagnostic program of the bending machine which not set properly, the Y axis cannot be in place if it is too small, and the Y axis cannot be unloaded if it is too large;

if it is a hydraulic failure, Need to check the main pressure, check whether the PV valve S5 is always in the energized position;

For the bending machine, the parameter gain of the Y-axis bending department may set too small,

but it can be increased appropriately; or the pressure is not enough, and the reason for the insufficient pressure analyze.

The programming reason is still the signal and hydraulic department reason; the programming reasons are mainly mold selection and plate Thickness, material, length of workpiece, bending method, etc.

The main hydraulic reasons whether the oil pump leaks, whether the proportional pressure valve which pollutes or damages,

whether the filter element blocked, whether the oil has been contaminated, etc.;

The main reason is the programming and manipulation of the bending machine. Check the programmed and processed workpiece.

The regular maintenance of the bending machine divides into several aspects

(1) Appearance maintenance: the machine tool should be wiped clean, without oil and dirt; if the parts are defective, they should be equipped.

(2) Maintenance of the upper slide block: check and adjust the parallelism between the upper slide block and the worktable, trim the slide block and remove the burrs of the guide rail,

and adjust the gaps in each part appropriately; check and adjust the direct control balance valve, wipe the guide rail, screw,

As well as the sliding surface, the parts should be replaced in time if they are severely worn.

(3) Electrical maintenance: clean and wipe the electric idea and electrical box, add or replace the grease in time; check whether the fastening device is loose, and check the wiring and control system.

(4)Hydraulic lubrication maintenance: clean and inspect oil pumps, cylinders, pistons, filters, reversing valves, etc., burrs should remove, and wear should be replaced;

oil quality and quantity should be checked, and the oil path should be unobstructed.