Process of transforming wire cutting machine tools（2023.03.18）

[a smile]

Process of transforming wire cutting machine tools

In August 2022, I bought a second-hand wire-cutting machine tool, which has been out of the factory for a long time and is very dirty and old. The operating system X8 has been replaced (paid to be replaced), but many components have been aging due to the age, so there are frequent failures. I haven't operated it for about 3 months, but I'm going to fix it because I have some parts to use it.

This is the current state. I'll record the process as I go along.

There are just a few idle PLC in hand (Mitsubishi FX series), after the increase of PLC can simplify its control circuit, and convenient to improve logic later!

I wrote a piece of basic logic that needs to be refined under these simple frameworks（2022.12）

 

[a smile]

Although the oil was cleaned up before, it was still dirty.

This time it was finally pulled out of the dark space and put into the open field, where it could be repaired freely.

First clean the heavy yellow robe (use oil remover to dissolve it, it's really dirty),

It is then rinsed with a high-pressure water gun and then redissolved with a wire brush,

Reflush, including the interior of the cab

It is 2023.05.30 today. It took nearly an afternoon to move and clean up, and then it needs to be placed and dried for a long time

 

[a smile]

Clean the HF cabinets together

High pressure washing will fill small Spaces with water and will not dry out for a long time ---- only time to evaporate the water

 

[a smile]

After a long time drying, the circuit should be safe!

There is just time to start promoting wire cutting refit -------

First of all, the support of the display installed later is removed,

and then the desktop circuit board is removed and installed on the internal side wall of the electrical cabinet.

Clean your desk to keep it clean and tidy

 

[a smile]

Install major appliances step by step and clean electrical wiring

 

[Janger]

What does the wire cutter machine do exactly? Cut wire. Well there must be a lot more to explain. That is a complicated machine with a lot of cabinets. And what are you going to do with it when it is working? Great pictures Sun.

 

[Tom O]

We use to stand behind the electrician at work telling him to try the red wire.

 

[Janger]

Sharp eyed Mr. John Nielson @johnnielsen noticed one of pictures said WEDM - ie Wire EDM. Or wire electrical discharge machine which is what that type of machine is commonly called in North America.Repairing the one you bought a smile looks like a big big project. We have a member making an EDM from scratch. I don't know of anyone else who has one of those in the forum.

for more info see:

Electrical discharge machining - Wikipedia

en.wikipedia.org

 

[a smile]

What does the wire cutter machine do exactly? Cut wire. Well there must be a lot more to explain. That is a complicated machine with a lot of cabinets. And what are you going to do with it when it is working? Great pictures Sun.

It is an EDM cutting machine, about the translation software problem ------- does not need to cut the wire.

I'm not sure I can fix it, but I'm trying. Electronic circuits are not my good, I can only try not to destroy its main circuit.

 

[a smile]

Open the plug yesterday to check the cable number and take notes

 

[a smile]

The inverter is disassembled and washed clean. Wait to dry completely

 

[a smile]

Welded display stand

 

[a smile]

Get rid of the useless wires and organize the wires to make it tidy

This is a very old monitor, very heavy, there seems to be no need to replace it, which will save some money.

Check the high frequency cabinet carefully

I checked and recorded the line number and direction of the wire, and I roughly understood its working structure, which will help me quickly determine the cause of the failure in future use, and can express it for maintenance. Of course, it's also a great learning opportunity, and I've benefited from staying patient and learning more about electronics.

There is a small question, is the high frequency voltmeter detecting the positive and negative voltage of the molybdenum wire? (I found the voltmeter wire and I disbanded it. I need to know how it works.) Anyone know please help me! thank you

 

[a smile]

The circuit continues to advance


Add some terminals, add a rectifier bridge (saves a switching power supply)

 

[a smile]

The weather has been very hot recently, so the progress has been slow, I think I have been lazy, but there is some progress with the accumulation of time.

Remove some other useless wires, and then re-check the transformer output, actually find a hidden dangerous wire, and then eliminate the danger (fortunately), PLC control circuit completed 90%

Then the PLC program was rewritten and the wires were arranged. I guess it helped me relearn some things.

 

[PaulL]

It's looking so much tidier! That's a heck of a job you've taken on!

 

[a smile]

I met a problem today. I used the transformer AC24V of the original machine tool and then used it for my control circuit after rectifying, but the voltage after rectifying was DC50v. Then I changed the connection to AC16V, and the voltage after rectifying was DC40V, which was still much higher than the standard DC24V. But I can't think why there is such a high increase, it makes me confused ----

It has always been my idea to use the original machine as much as possible, so I will add a DC24V switching power supply unless I have to

 

[Tom Kitta]

Wow, that is an old monitor. LCD monitors in Canada, used, are super cheap, sometimes free. You can easily get old 19" LCD for 10 CAD or around 50 Yuan or price of cookie and coffee in Shanghai.

That is a LOT of wires. I would not be able to deal with so many.

 

[a smile]

Wow, that is an old monitor. LCD monitors in Canada, used, are super cheap, sometimes free. You can easily get old 19" LCD for 10 CAD or around 50 Yuan or price of cookie and coffee in Shanghai.

That is a LOT of wires. I would not be able to deal with so many.

This is an old device, and I don't want to put in more hardware until it's fully functional, so I don't see the need to replace the monitor for the time being.

About the wire, I want to tell you: it's actually not that complicated, as long as you have enough patience, you can always find the right architecture, and you must make a good record. I am very happy to tell you that electronics is a huge problem for me, but my interest has led me to learn some basic knowledge gradually, and now I can do some circuit transformation unrelated to chip.

12 years ago I had no idea how a contactor could complete a self-locking connection.

 

[a smile]

Recently, I have been busy, these days I can finally have time to complete the transformation and start the test machine. The cutting of 30mm thickness is completely normal, but it is easy to break the wire when cutting 160mm thickness. I am looking for the reason, and experienced friends can give me advice.

I think inexperience should be the main reason, I hope to use it more in the future to increase experience points!