Member postings for Mark Williams 14

Duncan,

I am away from home for possibly another two months, so I can take pics then when I get back. From memory I joined a ballscrew to a stub shaft to replicate the original screw and made an adaptor for the ball nut to screw onto that fitted into the casting like the original nut did, I also added needle bearing thrust washers to the stub shaft. I had to space out the mounting flange casting from the y casting by 10mm to get it all to fit. I have a feeling I lost a small amount of y travel but not much. My ballscrew nut had a threaded end on it not a flange type like most seem to be so I think that made it easier.

regards

Mark

George, thanks for the kind offer to catch up! Not sure if I will get that far up, currently in Caloundra at my daughters place doing all the jobs she wants doing!! Looks to be 3+ hours from here to Bundaberg ??
regards

Mark

George, wonderful work !!

whereabouts in Queensland are you? Currently up here from Tassie

regards

Mark

I have fitted ballscrews to my Centec 2b ,x and y axis. No problem, tight squeeze on the y though.

regards

Mark

My Mill drill head uses the same bearings set as a Bridgeport, going on the rough dimensions provided by the sellers the spindle is the same length between bearings and very similar else where, the splines may be different dia depending on how the sellers have measured them.

Mark

Sorry, I am not sure what you mean? If I have done something incorrect please let me know

Mark

I haven't seen any with the ISO 30 taper, only NT30, ( sorry I put the wrong style in before) I must be looking in the wrong spot! Ones like this

Link Removed see CoC

cheers

Mark

Edited By JasonB on 23/06/2020 07:39:46

Martin,

thanks for the reply! I do understand that bit now! Not sure if I am able to edit the program to auto move it to the next crankpin it all gets beyond me! Will try and do a Seal 15cc crank in aluminium to manually moving to the next crankpin and see how it goes. I have a V8 crank I want to do that would be nice if I can cnc it

thanks

Mark

Has anyone bought a Chinese eBay BT30 spindle? I am looking at getting one to retrofit in my mill drill to get rid of the mt3 spindle with a few mods. Was wondering what they are like and do they have the recess machined into them to take a pull stud claw. All the suppliers know nothing about them when asked!!

thanks

Mark

On my cnc mill running mach3 I use a 6 axis hand controller ( like a PlayStation) and a program called key grabber to have the 5 axis's on my machine under control, just plug the hand controller into a USB port, works a treat if I just want to mill something simple.

Mark

I am going to try Martins program to see how well it works compared to the one by JS, I have had the JS one working well after I changed the rotation of the a axis.

I am a bit thick most times so would like to know what "pin offset from TDC " means please.

regards

Mark