03-18-2015, 02:59 PM
(This post was last modified: 03-18-2015, 03:02 PM by aRM.
Edit Reason: rectify errors
)
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KEN
U have this Machining down to a fine art in total contrast to our plod and plough, learn-by-mistakes, break-bits, self-teach methodology.
Let's start where U commenced.
No Sir, we don't have a CNC controlled Machine. However, we are permitted to dream !!!
Here's pics of our machine ............all over the shore !!!
At the outset, permit us to be open and frank - we know zilch, zero, absolutely nothing about Speeds and Feeds. U see that pic of the pulley setting, we inserted that so's U will accept it, that, well it practically remains there permanently !!! Yup, what we do practise is using the Lows for High Torque and the Highs for finishing cuts. The Power Switch has another two settings for Forward Low/High and Reverse Low/High which gives us a fairly wide spectrum of speeds to work with.
But when U rattle on about FEED RATE with Depth of Cut and the Power of the Machine being able to cope with the given insert geometry, then here again, we totally accept Your given parameters, but sad to say, we are totally unskilled, inexperienced and therefore unable to perfectly implement Your lucid practical advices. Yes, we would definitely very discreetly use our power feed on the Low High torque Speeds, as U have suggested, but here again, having learnt the hard way, would hear and act on the reaction of the cutting tool and the vibration of the machine to judge and estimate whether any of these settings need be increased or lowered. Generally, we would hesitate to take serious 3mm or 4mm cuts on our machine and usually commence with 1 - 1.5mm cuts, more on the side of caution.
Yeah, yeah, we hear U say "these Guys must be plumb crazy" !!! But truth be told, like the mill we have only recently learned how to Thread, taper turn, Knurl, part etc on our lathe. Nothing to be ashamed of. Just that we have unfortunately not had any formal training, except having avidly read what we could garner on these subjects, and have had to teach ourselves and learn along the way from Experts like Your kind self.
Walter do indeed have a massive catalogue, which we have downloaded and extracted hard copies of the sections U referred to specifically. Looking at our Spindle Speed plaque on the machine, we reckon we would be about right at 210/420 RPM for this cutter ???
We do appreciate the tremendous inputs U have made and must sincerely state that we have indeed benefitted hugely from Your writings and recommendations. Your "pearls" have not fallen on deaf ears. We will make a concerted effort to grapple and unravel this SPEED FEED quandary which has been eluding us.
Thanks a huge stack once again
LORD BLESS
aRM
KEN
U have this Machining down to a fine art in total contrast to our plod and plough, learn-by-mistakes, break-bits, self-teach methodology.
Let's start where U commenced.
No Sir, we don't have a CNC controlled Machine. However, we are permitted to dream !!!
Here's pics of our machine ............all over the shore !!!
At the outset, permit us to be open and frank - we know zilch, zero, absolutely nothing about Speeds and Feeds. U see that pic of the pulley setting, we inserted that so's U will accept it, that, well it practically remains there permanently !!! Yup, what we do practise is using the Lows for High Torque and the Highs for finishing cuts. The Power Switch has another two settings for Forward Low/High and Reverse Low/High which gives us a fairly wide spectrum of speeds to work with.
But when U rattle on about FEED RATE with Depth of Cut and the Power of the Machine being able to cope with the given insert geometry, then here again, we totally accept Your given parameters, but sad to say, we are totally unskilled, inexperienced and therefore unable to perfectly implement Your lucid practical advices. Yes, we would definitely very discreetly use our power feed on the Low High torque Speeds, as U have suggested, but here again, having learnt the hard way, would hear and act on the reaction of the cutting tool and the vibration of the machine to judge and estimate whether any of these settings need be increased or lowered. Generally, we would hesitate to take serious 3mm or 4mm cuts on our machine and usually commence with 1 - 1.5mm cuts, more on the side of caution.
Yeah, yeah, we hear U say "these Guys must be plumb crazy" !!! But truth be told, like the mill we have only recently learned how to Thread, taper turn, Knurl, part etc on our lathe. Nothing to be ashamed of. Just that we have unfortunately not had any formal training, except having avidly read what we could garner on these subjects, and have had to teach ourselves and learn along the way from Experts like Your kind self.
Walter do indeed have a massive catalogue, which we have downloaded and extracted hard copies of the sections U referred to specifically. Looking at our Spindle Speed plaque on the machine, we reckon we would be about right at 210/420 RPM for this cutter ???
We do appreciate the tremendous inputs U have made and must sincerely state that we have indeed benefitted hugely from Your writings and recommendations. Your "pearls" have not fallen on deaf ears. We will make a concerted effort to grapple and unravel this SPEED FEED quandary which has been eluding us.
Thanks a huge stack once again
LORD BLESS
aRM