Re: [mfg-smartcam] tool holders

[Bill Payter]

Title: Message

I used to sell machining centres and one of my customers had a big problem with tools sticking in the spindle. He was doing very heavy milling for 30 or 40 minutes continuously, then tool changing and the NEXT tool would stick in the spindle. After trying lots of things we discovered the cause. So much heat was being generated by the milling that the whole spindle was expanding, then when the next, cold, toolholder was loaded the spindle taper shrank around it and couldn't be released. Afterwards he just used to break up the milling cycle every ten minutes or so by taking the tool out and putting it back in again! Cheaper than fitting some form of spindle cooling!   Bill in the UK.   ----- Original Message ----- From: Ernie Gemmel To: [EMAIL PROTECTED] ; [EMAIL PROTECTED] ; [EMAIL PROTECTED] Sent: Thursday, November 07, 2002 4:05 PM Subject: RE: [mfg-smartcam] tool holders By the way, this type of thing is usually indicative of spindles that have done a little too much jack- hammering on the vise, if you know what i mean ...   -ernie         -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of [EMAIL PROTECTED] Sent: November 7, 2002 10:35 AM To: [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: RE: [mfg-smartcam] tool holders William,   We have a Fadal 40 taper and the roughing tools always bang when releasing. Sometimes it actually sends the machine into an error and has to be re-initialized. We have tried oils, cleaning the tapers. I'm not sure why it happens, but it is a problem for us also     Jim -----Original Message----- From: Ray Machine Inc. [mailto:[EMAIL PROTECTED]] Sent: Thursday, November 07, 2002 9:45 AM To: SmartCam Fourm Subject: [mfg-smartcam] tool holders Hi All,   Does anyone have problems with tool holders sticking in the spindle? We have a SuperMax Max 7 with a BT-50 taper spindle and the tools stick in the spindle and its hard on the tool changer. I have cleaned it and oiled it and nothing seems to help.   By the way Thanks for the help with the Plywood job.   Thanks William