Yes I had seen that as well. I had been looking at the Sandisk wifi stick but seems you can only transfer via wifi when it is not connected but during my searching I did see the Pi info.
I tried via serial but there is no advantage to it and infact it is worse as you need to send from the PC then go to the SZGH and type in the file name you wish to transfer so USB is much easier.
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Hi, Are you using the original tool turret and its 24volt motor ???? If so, how hard was it to incorporate with the new control ?????
Thanks
pete
Hi,
Yes, it's all original. I used a Pololu VNH5019 driver for the 24VDC motor driven by PWM signals sent by an Arduino PLC (Controllino Maxi), which manages the forward and reverse currents sent to the motor. The Controllino also decodes the output of the turret photodiodes (pnp) and sends it to the new controller (npn). It was a fairly straightforward job.
There are a few projects documented online that use a similar approach of using an arduino to manage the signals:
https://forum.linuxcnc.org/26-turnin...l?limitstart=0
https://github.com/f1oat/EATC-120
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Hi,
I don't remember what are the pulley diameters, but the new motor is rated at 2845rpm@50Hz, so the pulley ratio should be around 85%.
Cheers
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Just thought I would chime in again to say the SZGH is running great for me. I miss a few things such as inability to name tools in the tooltable, but I do have the wireless USB working well.
A friend also recently retrofitted a lathe with the same control and he decided to get a Toshiba FlashAir and he got it working so I got one as well Now I can access the USB drive from my desktop computer and transfer files both ways over the network.
I removed the door on the control, milled a slot in it and got a right angle adapter and it makes for a neat setup, you can see it top left of this pic.
Here is a better pic of it.
Hi mukanico,How to change logo?
Did you request to factory to set parameter (other than logo) when you order the controller SZGH (like in Fanuc, you need parameter) ? Or you do not need any parameter for this controller ?
Hi,
Sorry for the late reply...
The controller comes preset from the factory with a generic set of parameters that you can edit to suit your machine. They supply you with a manual that goes over the available parameters and how you can configure them. It's reasonably straightforward once you get over the chinese/english translation issues.
But it shouldn't be an problem to get support from the factory to set up the parameters if you need it. The technical support I got from them was better than I expected. I also installed a similar controller on a milling machine and they helped with the setup of the tool changer more than 1 year after I purchased the controller.
Cheers
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Do you need a prototype or a small production run of your parts? We provide fast and accurate CNC machining services. No minimum quantity required! Try us now at www.cnc-proto.eu
mukanico
I have a friend who has recently bought an SZGH control for his mill and is having trouble setting up tool offsets. I think you said you had one for a mill and was wondering if you had any info on how you set up the tool offsets?
I live 100 miles away so can't easily visit him and trying to help via email is not easy as I can't see what is happening at the control.
Hi,
Yes, indeed I also have a SZGH-CNC1500Mdb controller on a mill. I reference all my tools off the mill table. If I'm touching off on a 1-2-3 block or something else I input it's height by pressing the "T" key when in Manual mode (only need to do this once). Then, to set the tool offset I press "Redeem", select the corresponding offset number using the arrow keys and then press "F5-Set Tool"->"Enter". The offset is the automatically calculated based on the current machine Z coordinate and the input touch off height and stored on the table.
If I need to adjust the offset by a small amount, it can be done by using the "length compensation adjust" feature: on the offset table, I select the offset using the arrow keys, then press Enter and input the compensation amount (positive or negative).
There may be other methods but this one works quite well for me.
I hope the explanation isn't clear as mud...
Cheers
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Thanks for the reply, yes that is eventually how we figured out things worked.
It is a bit of a nuisance for him as he has a knee mill so the table height is constantly changing, that is not an issue until he has to set up a new tool or replace a worn one. If he has to do that then he has to do the T bit again and then set up all the other tools as well.
We have decided the best course of action will be to make up a removable and repeatable platform that attaches to the side of the head and can be used to set tools up in the future, hopefully it will work.
I'm just about to place an order for a SZGH-CNC990TDb-2 controller, I hope install go's as easy as it sounds.
OK, so I end up buying the SZGH-CNC1000TDb-2 controller. Now I have to install it.
Do I really need to buy and fit linear scales to my lathe? Electronics are not my best subject, my lathe is a Neutron CNC CJK0640 if that help.
Hi,
Not unless you want to feed the actual position back to the controller. My install was done without feedback and relies only on the servos for getting to the commanded position. You can setup backlash compensation and correct for leadscrew pitch errors in the controller too. That helps to minimize some of the issues with not having positional feedback.
Cheers
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As has been said, scales only if you want. They won't actually get used for closing the loop, they will just provide feedback for out of position monitoring and errors. Does your control support them anyway? I thought the tdc had the feedback option and the tdb didn't.