BTC clubhouse!#*$!

[vmax549]

Hi guys What spindle adaptor does the BTC use qc30??
Vince have you noticed that you are on the max voltage limit for a Ruetex drive. You might want to reread the recomendations from Ruetex on running at that level. I don't have a BTC just an old BOSS that has been retrofitted with new 1kw brushless drives and motors. I also added a VFD for the spindle. I am now wanting to install an ATC. Any info on this would be appreciated. If any of you have any extra QC30 adaptors I would be interested. Thanks Terry Parker

[vebers]

Terry

I am running ok. I purchased the 200v-40amp drives to run this machine. I wanted to be sure I was good on power, and I didn't want to compromise on speed by cutting voltage.

Vince

[vmax549]

Vince I am Sorry, I forgot all about them having a 200v series of drives. Terry Parker

[Kevin Taylor]

VMAX549 The BTC7.2 SerisI takes MT35 holders that erickson made for BPT with a intregal rention knob The head of the machine is a lot diffrent than a Boss 4,5,6 ect The Seris II BTC takes MT40 with a built in ret. Knob has stepper motorsXY&Z and less spindel speed I think 4500 max The controle for a serisII is the size of a refrigator
there is a picture of one on machine manuals.com They also have nothing good to say about a BTC I Will try to get pictures to you this weekend Kevin

[Kevin Taylor]

Ok where is everbody no new ideas I started on a quest today to build a encloser for my BTC . A three sided shower stall with two back panel's mounted to the base with the magor part on wheel's so it can be moved to do setup and scoop chip's hopefuly they will stay inside of the cabnet. Two question's for the audince can anybody tell me the dia. of the top of the base casting of a serisI Where the head elbow bolt's on. I have a waistful idea for a billet mount for the back of this project and has anyone tried to use a servo power knee on a Boss to lift the knee A couple more relay's an air cylinder and a couple more selonid valves {as if there aren't already enough to operate climent control on a Boing 777}and you could control it with the M funtion for a indexer Good night all Kevin Taylor

[colin1544]

Hello out there in the US all this talk about auto tool changers makes me jealous I once bought a BTC II but it was to big to get into my workshop so I finished up wit a series I boss 5 unfortunately in the UK there were very few BTC I machines imported. still the reason for the Thread is that I retained the set of 20 BTC II 40 Int toolholders with the correct solid pullstuds made by Bristol Erickson from the machine so if any one is looking for a set I'm looking for about £200.00 ( about 340.00$) E-mail me at colin.wildgust@virgin.net
Cheers Colin1544

[Cartesian-xyz]

Kevin,
At work we have a series I Bridgeport with a SERVO II cnc package. The Z axis is driven by the Knee. The servo motor is attached directly to the knee shaft, No gear reduction. The system is closed looped with .0002 scales and the knee uses the factory Acme screw. Works EXCELLENT, the tools are ALWAYS stubed up in the spindle for maximum rigidity! I Wish my BTC was knee driven rather than quill. There is no counter balance cylinders for the knee. the servo does all the work. 100 IPM is the maximum rapid or feed. I have never felt the motor even slightly hot after peck drilling a large number of holes. This retro is an early 80's. So yes it can and has been done succesfully. How is the encloser comming, ya need to post some pics!!
Stephen, Cartesian Machine Works

[gus]

I believe the toolholders are effectively btc only, 35 taper, integral pull stud, could be wrong

[Kevin Taylor]

Thank's for the suportive input on the knee feed steve will post pictures tomarrow I hope if my IT guy is avalible "youngest son". Gus the serisI BTC is MT35 the BTC serisII is MT40. Hoping to make headway on encloser this weekend first panel bent welded and program's for mount's on disk tonight will cut am cautiously going to drill four holes for 10-32's in the front of the cpu encloser can't see anything to drill through . Have to make the back panel's easy to remove to fill way lub and deal with cable conection's. Anybody found TG100's or they a BPT tooling legend ? Could use a couple have other stuff to trade. How about puting a column riser in a BTC has any one done it with a Boss 3-6 S1? Would make 4th axis work easer Back to making chips Kevin

[Kevin Taylor]

P.S. colin1544 and kumaichi need bob vila to come by and do a episode of this old home shop!!!! Kevin

[Kevin Taylor]

Encloser Bracket's finished for one of the back panels and put to bed in the vib finisher for the night need more angle to make bracket's for the left panel, back to the aluminum store on monday will post pictures of progress sat. or sun.
Good night all Kevin

[Kevin Taylor]

A few pic's of progress on encloser bracket's and two of the panel's should have most done by week's end Kevin Taylor