What is the reason why wire cutting often breaks? Ask the masters.

Analysis of the causes of wire cutting and wire breakage:

1 The main reason for the interruption of the processing of the fast wire walking machine.

If the filament breaks at the beginning of processing, the possible causes are:

1) The processing current is too large.

2) Molybdenum wire shakes badly.

3) There are burrs or oxide scales on the surface of the workpiece.

If the filament breaks in the middle of the process, the possible causes are:

1) Improper electrical parameters and excessive current.

2) Improper feed adjustment, frequent open circuit and short circuit.

3) The working fluid is too dirty.

4) The conductive block is not in contact with the molybdenum wire or is pulled out of the dent.

5) When cutting thick parts, the pulse is too small.

6) The speed of the wire drum is too slow.

If a broken wire occurs at the end of the process, the possible causes are:

1) The workpiece material is deformed and the molybdenum wire is clamped.

2) The workpiece falls and knocks off the molybdenum wire.

It is normal for wire cutting to cause the diameter of the molybdenum wire to become smaller and break the wire after cutting for a long time. If not, the filament is often broken. Pay attention to the following aspects:

1.Check that the molybdenum wire is in the groove of several guide wheels. 2. Check whether the conductive block is clamped with the molybdenum wire, because after cutting for a long time, the conductive block will cut out a groove to jam the molybdenum wire, and the solution is to transfer the guide wheel into or out of the point, or replace it with a new one.

3.It's been cut for a long time. If the thickness of the product is not very high, and the bed makes a sound and cannot be cut normally, it may be necessary to tighten the molybdenum wire.

This is also one of the causes of broken filaments.

Your current may be turned on too much.

There is too much automatic recoiling of wire cutting, and what is the cause of broken wire, what is the cause of too much automatic recoiling of wire cutting.

First of all, starting from the principle of wire cutting back, the backlash loss is a system protection mechanism, mainly to prevent the occurrence of short circuit between the molybdenum wire and the workpiece. Why do you say that, because there must be a certain gap between the molybdenum wire and the workpiece of wire cutting to be processed, and the processing is too fast or the chip removal is not smooth, which may lead to a short circuit of the molybdenum wire, in order to process smoothly, the system will retreat a section to let the processing go smoothly, which is the reason for the wire cutting retreat. So how to solve the wire cutting backback?

Quite simply, you can start with the following 3 points to solve the wire cutting regression. 1.You can try to reduce the step speed, especially when cutting tall parts, the molybdenum wire is easy to collide with the workpiece and cause a short circuit and retract phenomenon, and gradually change the step number to a smaller one until stable processing.

Wire cutting regression reasons, how to solve wire cutting regression 2Check the loss of molybdenum wire, because the molybdenum wire becomes thinner, which will lead to the resistance of the molybdenum wire becoming larger, and the guide cover will cause the workpiece to be cut and short circuit, so we should pay attention to replacing the new wire. 3.

In addition, it is recommended that you change the water baseline cutting fluid, such as Subide wire emulsion cream, because the chip removal effect of the oil baseline cutting fluid is really poor, far less than the water base.

1. Check whether there is any abnormal sound in the wire transmission gear and coupling, which is a phenomenon that will only occur after the gap is caused by wear, if there is one, replace it first;

2. Check the matching gap between the screw rod and the nut, if the screw nut wear gap is too large, the tight nut is well adjusted, and the screw rod and nut have to be replaced if the wear is too serious. In addition, the wear problem of the screw rod is also easy to cause the phenomenon of wire cutting and ellipse;

3. Check whether the screw bearing is worn, and it is recommended to replace it if the wear is serious;

4. Measure the parallelism and flatness of the wire carrier relative to the y-axis of the carriage, the parallelism is <, the flatness is appropriate, and the deviation is too large to be adjusted to the tolerance range;

5. Measure the parallelism and flatness of the guide wheel hole relative to the wire carrier after the upper wire arm, the parallelism is <, the flatness is appropriate, and the deviation is too large and must be adjusted to the tolerance range;

6. Check whether the rear guide wheel is flexible, if there is a stagnation in the operation, it is recommended to replace the guide wheel;

7. Check whether the conductive block has pulled out of the wire duct and stuck molybdenum wire, if so, it is recommended to replace it.

Prepare the workpiece blank, clamping tools, measuring tools, etc. before processing. If you need to cut the workpiece with the shape of the inner cavity, or if the process requires processing with a wire piercing hole, the blank should be drilled with a wire piercing hole in advance, and then operate according to the following steps:

1) Start the power supply of the machine tool into the system and prepare the processing program;

2) Check whether there is any abnormality in each part of the machine tool, such as the operation of high frequency, water pump, screw cylinder, etc.;

3) Threading, threading, and calibration;

4) clamping workpiece, alignment;

5) Pair the wire, establish the starting position of cutting;

6) Start the wire walking, open the working liquid pump, and adjust the nozzle flow;

7) Adjust processing parameters;

8) Run the processing program to start processing;

9) Monitor the processing process, such as wire walking, discharge, working fluid circulation, etc.

10) Check whether the parts meet the requirements, if there is an error, it should be dealt with in time to avoid the scrapping of processed parts.

Analysis of the causes of wire cutting and wire breakage:

1 The main reason for the interruption of the processing of the fast wire walking machine.

If the filament breaks at the beginning of processing, the possible causes are:

1) The processing current is too large.

2) Molybdenum wire shakes badly.

3) There are burrs or oxide scales on the surface of the workpiece.

If the filament breaks in the middle of the process, the possible causes are:

1) Improper electrical parameters and excessive current.

2) Improper feed adjustment, frequent open circuit and short circuit.

3) The working fluid is too dirty.

4) The conductive block is not in contact with the molybdenum wire or is pulled out of the dent.

5) When cutting thick parts, the pulse is too small.

6) The speed of the wire drum is too slow.

If a broken wire occurs at the end of the process, the possible causes are:

1) The workpiece material is deformed and the molybdenum wire is clamped.

2) The workpiece falls and knocks off the molybdenum wire.

As long as it is a steel guide wheel, please choose a non-type gemstone guide wheel, which is durable and silk-saving.

There is also a faucet, if it is blocked, there will also be a phenomenon of broken wire.

This situation will occur if the conductive block is jammed and the wire is too tight.

If the work is released to the maximum, there will be wire burning.

I used to break the wire, now I have invented a device, unless the outside is smashed and used for a long time to break the wire, the effect is very good, is still in the trial, it is estimated that the cutting of aluminum parts will not break the wire and burn the conductive block, if the wire cutting is installed, it may be a big improvement.

The voltage should not be too high, generally it is best not to exceed 850mv, and the electric frequency should be small when calibrating the vertical or straightening the face, and generally one or two can be hit.

There are many reasons, and if it is still under warranty, it is highly recommended to let a professional take a look.

You put the situation in detail.

There are many factors that cause broken wires, and here I will only introduce a few aspects:

1. Wire baffle and conductive block: after a long time, there will be a groove on the surface, and its width is less than the diameter of the molybdenum wire, when the molybdenum wire is used for a period of time, the middle working section is thinner than the two ends, and the coarse molybdenum wire is stuck in the groove when commuting, causing wire breakage.

Solution: Rotate the wire stop and conductive block at an angle every once in a while, or replace them.

2. Processing parameters: the tracking should not be too tight, otherwise it is easy to short-circuit, and the short circuit will cause the current of the molybdenum wire to be too large, and the local high temperature will be generated, which will accelerate the aging, embrittlement and easy folding of the molybdenum wire. The short-circuit current should be set below 2A.

3. Tight wire: After a period of use, the molybdenum wire will be elongated, so that the tension of the molybdenum wire will decrease, and the wire will be easy to break. The position of the conductive block of some machine tools is not ideal, which will cause the tightness of the head and tail of the molybdenum wire to be different, and will also cause the wire to break.

4. Cutting fluid: the concentration should be appropriate, too high and too low are not good.

These are some of my experiences, and I hope it will be helpful to you.

There are many factors that go into broken filaments. Molybdenum wire tension, guide wheel wear, conductive block jamming, guide wheel bearing jamming. The most important thing is that when the cutting is completed, the iron falls and instantly jams the molybdenum wire. You haven't described exactly when most of the broken filaments were.

If it is a new molybdenum wire, the conductive block is worn, the saponified water is too dirty, the current selection is not suitable, the running screw gap is too small, and the screw rod of the screw is short of oil, which may cause wire breakage

Depending on how much work you do every day, it's normal for you to do that.

If the designed program is to return to the origin, it can be left empty at the origin and replaced with new yarn, and then it can be cut from the beginning or reversed. If the designed program does not return to the original point, it needs to be reversed after emptying and changing the wire.

The wire breaking process begins with the instability of the processing process, and the unstable processing promotes the concentration of discharge at one point, and the concentration of discharge causes the discharge to be intensive in time. This causes the energy in the input gap to increase and concentrate at one point, resulting in a local high temperature, which causes the electrode wire to be burned off. The whole process of breaking the filament.

Causes of Broken Wires The direct cause of broken wires is an increase in the thermal load of the input gap and is concentrated at one point.

The cause is the instability of the processing process. Since the cause of wire breakage is the instability of the processing process, it is the way to fundamentally overcome the problem of wire breakage by taking effective measures to make it enter a stable state as soon as possible according to the signal of instability in the processing process.

It mainly depends on what you're working on. If the program is back to the origin, then you can start cutting or reverse cutting after changing the new silk after leaving the original point, if your program is not back to the original point, it can only be cut back after emptying.