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rotary broaching or hobbing of spur gear
hi guys. I got a new part to make, but i am confused as to which process is more suitable. I know that it can be made be gear hobbing, but i dont want to purchase a new hobbing machine just for that. i...
View ArticleOkuma gantry mill installation
Alliance Innovative Large Milling Okuma MCR-A5C Finally. It's here. Check out the link for pics of the install. Pretty excited.
View Article.098 REAM IN 17-4 PH, help
Hello, Does anyone have any first hand experience reaming approx. a .098 hole in 17-4 ph. I broke a few solid carbide reamers so I moved the reaming to the Bridgeport so I could feel whats going on....
View ArticleDorian should be avoided at all costs.
I purchased a Dorian AXA quick change tool post for my Hardinge CNC lathe. I ran into some problems with repeatability and after looking everywhere but the QCTP I discovered that the repeatability of...
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Help with part fixturing.
I make some parts for my business that are machined from 1" round stock 6061 T-6. I machine these on my Trak DPM bed mill I do not have a CNC lathe I hold the part vertical with a 3 jaw chuck on my...
View ArticleZ axis won't move - no alarms...?
I was making parts on my Excel PMC 5t18 today, and all of a sudden, the z axis quit moving. I think it quit after doing a 'reset'. It has a Fanuc 21 M control on it. I checked the back panel, and saw...
View ArticleHurco Ultimax control blank screen.
I have a hurco bmc10 w/the ultimax control. back in the fall I left in on overnight and when I came in the next day the control was locked up. I ended up having to dump all of the programs because they...
View ArticleDorian QCTP spec: +/- 0.0001 Verifiable? Can anyone positively affirm it?
continue please... Dorian topic previously closed
View ArticleCutting Slugs
Hi everyone. what would be the best machine for cutting a 1" OD part that's .25 thick. Its just a slug. It does have to have a good finish on both sides and no tit. We need thousands of them so speed...
View ArticleCrashed Mill, what to check?
Hey everyone, I just crashed my VF1 today. I was cutting an aluminum part and I forgot to go to safe Z before the start of the program. I ran 3/4" deep into a 1" aluminum block with a 1/2" carbide...
View ArticleImpossible to change 9929 bit 0 to 1?? Fanuc 21i-TB
Hello, I have to change these parameters on a lathe with Fanuc 21i-TB control : 9929 bit0=1 9935 bit5=1 3112 bit0=0 I have changed parameter 3202 bit 4 and bit 0 to a 0. But still I can not edit 9000...
View ArticleHaas High gear fault
I am trying to start up my 2011 Haas VF3 and it wont kick into high gear. It just sits there and tries to orientate the spindle switching from counter clockwise to clockwise, then faults out. The...
View ArticleWhat brand are the best shrink fit tools?
Just wondering what brand everyone likes for shrink fit tooling. My shop is currently getting quotes for a larger quantity of shrink fit holders(cat40,hsk40e,hsk63 and hsk100) We currently mainly use...
View ArticleTurret tolerance dropout
I have a Niles N41 lathe. We are running train axles with a tolerance of +- .0005 on the bearing journal. At random intervals the machine will loose and gain a .001 on diameter without any pattern or...
View ArticleOkuma feed problem
I just purchased an older Okuma with a OSP5000M-G control. All is working great with the exception of programmed feed rates. No matter what I try, the machine is ignoring the feedrate and defaulting to...
View ArticleHyundai hit30s spindle motor/fan question
Not my machine, belongs to a customer. Hyundai hit 30s, Siemens 840c, 1ph6167-4nf40 spindle motor, external fan. External fan appears to be 380v 3ph motor, .8amps. They replaced the old fan, which was...
View ArticleMacro Programming in Fanuc 30/31i - Temporary Variables
Hello, Trying to write a macro program in a Fanuc 30/31i controller. I understand that you call G65 Pxxxx Ayyyy Byyyy etc then pick up the arguments in variables #1-#33. What I am trying to figure out...
View ArticleBridgeport GX 710 machining centre, anyone have experience, prepared to rate?
Hi all, I posted this on the Bridgeport forum but realised that is not really a CNC forum, so I have re-posted here. We have an opportunity to buy a used GX710, Fanuc OiMD year 2010. I have never used...
View ArticleThread milling vs tapping
I have a project where I need some 10-32 holes threaded. Some are in 6061 and some are in 304 Stainless (I think thats what it is, the spec of the part might change still sorting everything out). So...
View ArticleQuick change collet chucks for turning centers what manufacturer do you...
I'm looking for a quick change collet chuck for my Okuma Genos L300M lathe. It's a big bore lathe with an A2-8 spindle and 2.75" through the drawtube. I've settled on a 65mm size pullback chuck. I need...
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