Gate / Bridgeport Interract / Project

[Lee Roberts]

Mine arrived yesterday has well Matt and these 1.8Kw puppy's do make nema23 steppers look small.!

Set them up last night and seem nice enough. So far I'm happy with them but that could all change when they hit the road so to speak.!!

What have you got planned for your servo's Jazz?

.Me

[JAZZCNC]

What have you got planned for your servo's Jazz?

.Me

Fitting to this.! . . . Replacing Brushed DC servos.

[Lee Roberts]

Fitting to this.! . . . Replacing Brushed DC servos.

Nice is it yours, looks like a big boy and a nice project to work on...

.Me

[JAZZCNC]

Nice is it yours, looks like a big boy and a nice project to work on...

.Me

It's mine for now but could be somebody else's when it's finished and fully Converted. I may put a Build thread up actually.

[Lee Roberts]

It's mine for now but could be somebody else's when it's finished and fully Converted. I may put a Build thread up actually.

Cool what's it worth converted?, approx will do don't mean to be rude in asking.

Yeah a log would be nice to see, I was looking at your build log the other day actually for the belt based machine you did for the guy in Ireland I think it was New Machine Build Belt Driven extrusion framed wee beasty!! - ...

It would be a nice thought to know you've got log(s) on here too...

.Me

[JAZZCNC]

Cool what's it worth converted?, approx will do don't mean to be rude in asking.

No idea make me an offer. . Lol

Yeah a log would be nice to see, I was looking at your build log the other day actually for the belt based machine you did for the guy in Ireland I think it was New Machine Build Belt Driven extrusion framed wee beasty!! - ...

It would be a nice thought to know you've got log(s) on here too...

Argh the scrap pile machine.! . . . That little bugger went like the clappers and made a nice solid little machine. Lost touch for quite a while with Ian who i made it for but recently got back intouch with me thru someone on here posting about it. It's still cutting nicely and he's made some nice stuff with it and just shows what can be done with other peoples scrap mixed in with a few nice parts.

To be honest I often feel bad that I don't post build logs but to fair I haven't got time to record and photo all the nitty gritty stuff that matters or helps.
Also because I mostly use CNC machines to build CNC machines most of it won't help new builders because it's a little like comparing apples to oranges. What I do they can't easily without a machine to help them and to do it manually would be completley different approach and often would be designed different to suit manual methods better.

Mill on the other hand is more retro-fit so will be easier to show so i'll maybe do this.!

[kingcreaky]

Subscribed to Mr Crispin, Lee... that loco seems pretty hardcore :D

Weekend, themed "chicken and egg". Could of done a far better job of the Z stepper bracket, if the machine was working...



but its done nevertheless, even if its just for now




As mentioned previously, the spindle has two mechanical systems to control spindle speed. The "vari-drive" pulley arrangement, and also a back-gear which halves the rev output from the selected speed range from the vari-belt system. As Im unwilling to spend a fortune on the variable drive pulley I need for the motor, I intend to drive the spindle with a single ratio, then rely on the VFD and back-gear for speed change.

In order to get adequate torque at the spindle head, I need to start off with too much power, that way if Ive reduced the revs with the vfd, there is still ample power by ratio.

I was kindly given a main spindle motor for the machine, Its a brand new 8hp siemens 4 pole, it runs at 380v in star, so, il only achieve 4hp at 240v, If I run this at 100hz Il get approx 3000rpm at the spindle, and if I gear that 3:4 my top spindle speed will be around 4000rpm

only problem is,said motor was dropped (hence its free) the rear casing is shattered, It is also foot mouted, I need it face mounted. Therefore, I intend to replace the broken rear face plate with the existing front plate, then re-make the front plate, building in a face-mount







so, spent fifty notes on a nice slab of ali




then armed with my new found qualifications after a 18months of channel updates from the likes of doubleboost and keith fenner, off I set




what could possibly go wrong? ...

er, the "brake" setting on the vfd could be a bit optimistic for that amount of momentum.... and you could sheer a gear in the lathe gearbox !!!

bugger!


stripped a cog...

so now need to fix the lathe. god knows how..... I figure if I get really oily and look like I know what Im doing, inspiration will hit me....So have that in bits everywhere




Busy week at work, and in wales next weekend, so sulking with beer tonight.

anybody tooled up to make gears?