[JH-Q]

The frame is now welded and looks really good!
The welding was done by my former classmate, who is a talented welder. I asked him to do it as my welds aren't that good.

[romihs]

JH-Q,

Impressive job you have done there!

I'll be watching this thread!

Regards

Sandi

[JH-Q]

Z-axis ballscrew is here!

Diameter: 31mm
Pitch: 5mm
Lenght: 600mm
Cost: ~120€ including shipping and customs (85$ buy-it-now bargain)

The screw looks precicion ground and moves incredibly smoothly. Also i didn't notice any backslash on the ballnut.

[romihs]

JH-Q,

Where did you order that ball screw from? ebay?

Regards

Sandi

[FPV_GTp]

JH-Q,

Where did you order that ball screw from? ebay?

Regards

Sandi

HI JH-Q , i second that question , " Where did you order that ball screw from? "

do you have a website that has a direct link to the supplier ?

nice work JH-Q , very impressive , the way the CNC_lathe is progressing , you will just up the workmanship stand by 1000% , makes it very hard for us old timers

cheers

[JH-Q]

The ballscrew was bought from ebay, i waited almost half a year waiting for suitable one come up for sale.

Spindle bearings are some chinese brand, but they claim to handle 4300rpm with grease and 5000+ with oil lubrication. I'm going to set the mechanical max. spindle speed to 3200-3300rpm and electronically limit it to 3000rpm. I didn't find any accuracy datasheets but i hope they are accurate enough.

The frame is now machined, i still have to do some burr removal and tapping on it, and then i will post some pics of it

[rot]

Best low budget cnc-projekt I have seen!
Everyday I´m looking if there is somthing new.