I was an auto mechanic for about 15 years, hobby machinist for about 10, when I started watching machining videos on UA-cam (your's were the first I saw) it rekindled my interest. Recently the owner of the shop I worked at retired, this was the 3rd time in my career an owner retired and closed up on me. Anyways, at 37 years old I'm back in school to be a machinist and your videos had something to do with that decision. Thank You.
Yeah the trades slowly dying at least in upstate NY all the people that are in the field are getting ready to retire and no new people coming in to replace them
When I got my first milling machine with built in feeds (a Fexac horizontal) I discovered that feeds on a milling machine are given in inches per minute and not inches per revolution. I also discovered that the knee feeds at a lower rate than the X and Y axis feeds (in my case 2/5 the feed rate). I found both of these things to be frustrating as the first one makes figuring out the feed rate difficult and the second makes horizontal milling less effective. When I got my horizontal boring mill (a Wotan) I was pleased to discover all the feeds are given in inches per revolution and the feed rate is the same for all 4 axis. It makes figuring out the feeds very easy. The other advantage is you can maintain the same chip load per tooth when you change spindle speeds without having to change the feed rate. For these reasons and also the fact that the HBM is more versatile than a horizontal mill I now do about 90% of my milling/boring work on my HBM. Ken
Yes. Often the vertical feeds are different from longitudinal and cross (gear ratios). I enjoy working on boring mills. Thanks for watching and your note. It put a smile in my day! Take care Ken.
Very interesting. I’m new to machining. In the manual I was given the formula that I’m to use to find my rpm is cutting speed x number of cutters on the tool. Then divided by the diameter of the tool. So using high speed steel 4 flute (half inch) end mill it would be 4 x 100, divided by .500. And that gives me an rpm of 800. And then after all of that....... they tell me just play around with it (the speed and feed) haha. For precision equipment it feels like there is a lot of leeway in milling. Like I said I’m very new to machining but am really enjoying learning the trade! Thanks for the video, very informative.
The milling machine shown in the video is capable of 24 and 7/8" longitudinal and traverse and 12 and 7/16" vertically. These feeds are in inches per minute.
I was an auto mechanic for about 15 years, hobby machinist for about 10, when I started watching machining videos on UA-cam (your's were the first I saw) it rekindled my interest. Recently the owner of the shop I worked at retired, this was the 3rd time in my career an owner retired and closed up on me. Anyways, at 37 years old I'm back in school to be a machinist and your videos had something to do with that decision. Thank You.
Thank you for your letter, you made my day! I love this trade. Best of luck with your school.
Yeah the trades slowly dying at least in upstate NY all the people that are in the field are getting ready to retire and no new people coming in to replace them
When I got my first milling machine with built in feeds (a Fexac horizontal) I discovered that feeds on a milling machine are given in inches per minute and not inches per revolution. I also discovered that the knee feeds at a lower rate than the X and Y axis feeds (in my case 2/5 the feed rate). I found both of these things to be frustrating as the first one makes figuring out the feed rate difficult and the second makes horizontal milling less effective. When I got my horizontal boring mill (a Wotan) I was pleased to discover all the feeds are given in inches per revolution and the feed rate is the same for all 4 axis. It makes figuring out the feeds very easy. The other advantage is you can maintain the same chip load per tooth when you change spindle speeds without having to change the feed rate. For these reasons and also the fact that the HBM is more versatile than a horizontal mill I now do about 90% of my milling/boring work on my HBM. Ken
Yes. Often the vertical feeds are different from longitudinal and cross (gear ratios). I enjoy working on boring mills. Thanks for watching and your note. It put a smile in my day! Take care Ken.
If you’re not, you really should be a teacher. Very instructive.
:) thank you for your kind words, funny enough that is exactly what I do.
Very interesting. I’m new to machining. In the manual I was given the formula that I’m to use to find my rpm is cutting speed x number of cutters on the tool. Then divided by the diameter of the tool. So using high speed steel 4 flute (half inch) end mill it would be 4 x 100, divided by .500. And that gives me an rpm of 800. And then after all of that....... they tell me just play around with it (the speed and feed) haha. For precision equipment it feels like there is a lot of leeway in milling. Like I said I’m very new to machining but am really enjoying learning the trade! Thanks for the video, very informative.
I'm glad you liked it, you are going to love machining! Thanks for watching and your post.
Hope you are doing well Brad, thanks for the info!
All is good, thanks for watching Rob.
Question: What brand of lathe is in your videos ? I'm trying to identify my lath (much older but similar controls)
This is a Colchester lathe.
The Mill is a Fort Worth.
Excellent ...thanks
My pleasure, thank you for watching
great video.....but pls can you do a video on compound indexing??
Do you mean differential indexing with a compound gear train?
Wht is the maximum feed we can give on milling machine?
The milling machine shown in the video is capable of 24 and 7/8" longitudinal and traverse and 12 and 7/16" vertically. These feeds are in inches per minute.
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Thanks for watching.