I bought a desktop router from China (Silly Me).It went for two weeks and then stopped.I have been fighting the company for 4 weeks to help with ideas for repair.With no luck.I will be adding more info later
Mike

Please post the machine type and who you purchased it from.

Hi Wayne,
I am giving the company one final chance till tomorrow to do something,if no luck
i will name the company and machine type, and the problem with the machine.
I have all the emails to the company to back me up.
Mike

Mike,

Let them know they are dealing with a community of CNC'er that could be potential buyer's of their products.

One bad complaint on them would be very bad for their business.
I have seen it happen here before.

Wayne

Thanks Wayne,i will give that a go and see what happens
Mike

I bought a desktop router from China (Silly Me).It went for two weeks and then stopped.I have been fighting the company for 4 weeks to help with ideas for repair.With no luck.I will be adding more info later
Mike


Out of pure curiousity - what is not working - it coulbe something really stupid - describe the fault and maybe someone on the zone might be able to help.

Hi
When i jog the machine in the X & Y axis it is perfect.But when i jog the Z axis it just judders,the ballscrew tries to turn but just judders.I have changed the stepper motor,taken the ballscrew out it runs free.so i can't think of anything else it might be.
Thanks
Mike

Hi
When i jog the machine in the X & Y axis it is perfect.But when i jog the Z axis it just judders,the ballscrew tries to turn but just judders.I have changed the stepper motor,taken the ballscrew out it runs free.so i can't think of anything else it might be.
Thanks
Mike


Put the stepper from the z axis onto one of the other axis too see if its the motor - to me it sounds like you have an alignment problem

Hi,
I am only new to this game,i retire in a couple of months and bought the machine to do a few things to keep me busy.If it is an alignment problem,can i fix or would i need someone to repair it.
Mike

Hi,
I am only new to this game,i retire in a couple of months and bought the machine to do a few things to keep me busy.If it is an alignment problem,can i fix or would i need someone to repair it.
Mike


I had the very same problem whilst building my machine - and I just checked it all ,could not see what the problem was until I dismantled the Z axis and one of the shafts was slightly bent - replaced the shaft and was back in line.
Maybe you might need a local small engineering company to have a quick look if you are not happy about doing it yourself.

Best of luck in your new time consuming hobby - whatever you end up making with the machine.

Hi
When i jog the machine in the X & Y axis it is perfect.But when i jog the Z axis it just judders,the ballscrew tries to turn but just judders.I have changed the stepper motor,taken the ballscrew out it runs free.so i can't think of anything else it might be.
Thanks
Mike
Mike what control software does it use?

The first thing to do before pulling motors off etc is lower the rapid speed and acceleration for the Z axis.

Drop it by at least half and see if that makes a difference.

Let us know the result.

Greg

Hi Greg,The control software is nc studio.I have tried altering the feedrate but still the same.
The ballscrew tries very hard to turn,but it just judders around

I'm not familiar with NCstudio.

Did you reduce the rapid feedrate in motor tuning way down? I mean way below what would be any use. Just to see if it will run.

OK it was running and now it's not. You changed over stepper motors and that did nothing.

With the stepper off I presume the screw turned with fingers OK. Unlikely to be alignment. Any chance lubrication has dried or nut has filled with MDF dust? This happens.

Is each driver getting good power supply? Crimp connections can look OK but be poor. Poor connection somewhere would be one likely cause.

If that all looks good try swapping a driver over.

Let us know how you get on.

Greg

Hi Greg,
Just noticed something today,i turned the machine on for about 10 mins(not running) the casings for the X & Y drivers were cold, but the one for the Z driver was very warm
Mike

Can you turn the Z axis by hand without the motor attached and get it to move?
Is the Z axis bound up or are the gibs overtightened?

Hi, Yes the Z axis turns freely by hand. I am only new to this game,so forgive my ignorance,but not sure what the gibs are.
Mike

Can you post some pictures of the Z-axis without any company names? Just scribble them out with Microsoft Paint, etc. Should be easy to diagnose a mechanical problem that way.

Hi I have posted a pic in the gallery.I have a small avi clip but it is 3.5mb,i will have to make it smaller before i post.
mike

G'day Mike.

OK so it turns easily by hand. Presumably it's still free when the stepper is remounted.

It was unlikely (but not impossible) to be mechanical anyway. It was working for two weeks.

And if it was mechanical then it should be fairly obvious.

Did you try with the motor tuning velocity and acceleration way down? Don't skip this one. :)

Do all connections check out as sound? Check the voltage getting to each drive is the same.

Is there any chance the amperage setting on that drive has been altered?

Are all steppers identical? Are all drives identical?

Then swap the drivers over. X with Z and see if the fault goes with it or it is still Z.

Greg

Hi Greg,I have just changed x with z and the problem goes with it
Hit the z axis and it moved perfect on the x axis, but hit x and i get the problem
Mike

OK then that gets rid of mechanical and stepper.

Is the sus driver getting correct voltage from power supply? Still suspect poor connection somewhere. Check them carefully.

If not then I guess it's gotta be the driver.

How do you adjust amperage on them? Any possibility this has altered?

Greg

Sorry with my ignorance Greg, but i will have to get someone in about the amperage.
What i did notice when i changed the cables was, when i unpacked the machine it was sitting on on of the cables,the Z one
And i see now the cable is normal shape,but for 40mm it is flat,where the machine was on it.Could that be disruptive in any way
Thanks
Mike

Certainly worth checking that out Mike.

I helped Mike out with this CNC. The Z cable was damaged during shipping because of poor packing weakening the shielding. A dodgy connection job in the Z axis plug during use set off a domino effect which basically destroyed the cable. Shame on the manufacturer, certainly not export quality. Hopefully we can find a suitable cable to replace it, as getting warranty parts out of this Mfr is a challenge.

So its been over a week now... Has the problem been fixed?? Can we find out who the company is?

Thanks Bryan and all other members of the forum who have helped me sort this problem.When i get the new cable and Bryan attaches it,i will be all go again.
Thanks again to all.
Mike

Look forward to your report saying it's now going great Mike.:)

Greg

sounds like a diode problem. u said stepper motor so look at the control board for the z axis. find the diodes and test them. almost 100% of the time on my 4 bridgeports and 1 centroid it will be the diodes. simple solder job.

Hi,Thanks for your info,the machine is still not going,the problem has changed.
I had someone put a new cable on the Z axis control unit to stepper motor,
that worked fine,but then the X and Y axis stopped working.
If i take the Z cable and plug it into the X and Y plugs, jog with the X and Y buttons still nothing happens,but if i jog with the Z button plugged into the X or Y,i get the X or Y movement.It is very frustrating as i can't find anyone here in Christchurch,who knows.
Thanks
Mike

I'd day the diodes could be right. THise cables do not like being plugged and unpluged alot especially if powered up.

Mike you need to stop experimenting with your machine Like that. I offered to troubleshoot and further repair your machine, but you told me you are taking it to a sparky in town, which is fine I didn't sell you that machine.
If you would like some help you know my contact detials.

Cheers,
Bryan

Hi,Thanks for your info,the machine is still not going,the problem has changed.
I had someone put a new cable on the Z axis control unit to stepper motor,
that worked fine,but then the X and Y axis stopped working.
If i take the Z cable and plug it into the X and Y plugs, jog with the X and Y buttons still nothing happens,but if i jog with the Z button plugged into the X or Y,i get the X or Y movement.It is very frustrating as i can't find anyone here in Christchurch,who knows.
Thanks
Mike

Would it be possible for you to take some pictures of your machine. It may be that there is a Member here already with the same machine and can help sort this out. These type issues are not uncommon on hobby machines, but a store bought unit should preform better or at least have some resemblance of technical support available.

Sounds like a loose power wire to the other two axis. When powered up, do the X and Y axis hold, or are they like no power was turned on?
If like unpowered, look and see about the power to them. If they lock up and hold, are they (X and Y axis drivers) getting signals from the computer?

It sounds like a wiring fart.

Sounds like a loose power wire to the other two axis. When powered up, do the X and Y axis hold, or are they like no power was turned on?
If like unpowered, look and see about the power to them. If they lock up and hold, are they (X and Y axis drivers) getting signals from the computer?

It sounds like a wiring fart.

Try the connections at the board end - sometimes they do not fit correctly and sometimes move causing the signals/power not to get to the stepper motors.

Hi, When powered up, and the X and Y are jogged,it is like no power at all,but on the simulation on the software they are working.

A couple of photos fo the machine.
It is a XJ-3030, but not the one i saw and ordered,they sent this one

Hi Toby,

I see you are in Christchurch, is your machine an Excitech machine and is there a chance of me seeing it in person?

Thanks,

Shannon.

Hi Shannon,
The machine is a XJ3030.Yes that would be great if you could have a look at it.
Phone No,9814830.
Thanks
Mike

Thanks Shannon,this young fella got the machine going after about 10 mins looking at it.
The problem was a loose wire in one of the control units.
Thanks Mate
Mike

Hows the cutting going, surely you must have something made by now... Just kidding. Do post some pics of what you make on it though.

Shannon.

I actually found that one of the cables was damaged during shipping. They had set the base of the router directly on top of the cable. I replaced the cable (very dodgy soldering job XYZ did on the cannon plugs) and it started working again.

I have bought a couple of machines from XYZ-tech, a XJ-3030 and a XJ-40, as a XJ-9060 and was very disappointed myself over the quality of workmanship of each piece. Even though Tony the manager is a nice chap, the machines they send out is absolute rubbish. Always something wrong, something missing, something forgot, something not working right etc. When you ask for help or the missing part, Tony runs and hides. One of the machines had the emergency shut off wired backwards, so when activated, the electricity and laser was still on, no CE certificate for XYZ. I got a wee shock so I'm not impressed one bit! It's unfortunate because I have met Tony in person and been to their new factory in Jinan, however he is only sales and has no control over production or quality, this is why he cannot fix problems which are commonplace. Maybe they will get their act together with the new engineer soon, being a very new company, I wouldn't recommend their equipment until that day comes, if ever.

I got a wee shock so I'm not impressed one bit!

Jesus! I wouldn't touch that company with a barge-pole. That is downright criminal!

As SyS-e says,he was kind enough to get the machine running.
But now the inverter has gone,so i have attached a 850w trimmer router to the machine.
It is not as quiet as the water cooled spindle, but at least the machine is running again.

Hi All,
Im glad i found this post. I was considering buying what looks like the same machine bed and spindle, take a look here.......

http://www.cnlike.com/En_ProductShow.asp?ArticleID=117

Looks the same to me? The control side of things looks very different to the picture you sent.

Im new to milling/CNC, below is my wish list for a machine under $3000. any advice or pointers?????????

. I operate a small electronics-manufacturing unit. I provide low quantity (25 to 100 unit) custom designed electronic instruments for medical, aerospace and industrial markets. The main uses for the milling machine are listed below.

1. Machining/drilling of small, 3mm thick ABS plastic parts.
2. Machining/drilling/cutting slots and rectangular windows/engraving of small, 3mm thick aluminium parts such as front panels.
3. Machining/drilling/profiling of small wooden mock up hand held enclosures for evaluation by the end user; the shape will have curves on it, look at a computer mouse as an example. Once their focus team is happy with the design then they pass the design to a plastic moulding company.

4. I would also like to use this for milling 1 off prototype in house PCB boards. 0805 components, 1.25mm spacing SO chips, min track size 0.02”. The last board I did had around 100 components on a 90x70mm PCB. I am fully aware that this machine is NOT in the league of the dedicated PCB routers out there but if it can produce some in house workable proto PCB's then it would pay for it’s self in a year or so.

Have you got the machine working now? how does it perform? whats the accuracy like? any good for SMT PCB work?

Thanks
Ray

Try Excitech, they have great customer support and you can email Taney direct on tomhua_1@hotmail.com.

http://sh-cnc.en.alibaba.com/product/50054773/50972586/CNC_Router/CNC_Router_SHG0404.html

They sell a range of CNC machines, I have a SHM1530 that arrived about two weeks ago.

Shannon.

Hi Shannon,
Do you use your machiune for PCB work????

Ray

I will be using the machine for commercial routering and that sort of stuff. It would do PCB's fine though. The smaller one in the link would be better.

Shannon.

Hello Toby !

I just got me first CNC from China and was searching the Internet for help when I found your quote.

I am having trouble connecting the machine to my PC. The USB driver was not included in the package (I don´t know why) and I found one that seemed to fit but I thought after installing it I would see the machine as a printer.

The software I got whit the machine look for printers when I look for connection for those.

Any idea ? How did it go for you ?

Einar

You are really unluck. not stupid
I am from China. Most of world want to buy something from china with lowest price. and the want to price to be lower and lower. I understand the situation you encountered.
China possesses an old saying: one cent, one quality.

We supply customers with two type of products, cheap and quality. If customers need cheap one. I will give them cheap. if they ask quality one, I give them quality.

There is no product with lowest price and highest quality.