Since there is some interest in learning some of the basics about using machine tools, I'm gonna post a few more pictures to explain how to use a Rotary Table for basic stuff. Enjoy! Edit: Everyone needs to realize that all machining is done by locating a part directly under the center of the spindle of the machine, and then moving in relation to that established centerline. This is one of those times when I'm saying something that is not always true, but for the purpose of understanding basic machining accept it as true for learning purposes. Hope that peaks some folks interest and shows how simple some machining can be.
Ekimneirbo, you talk about machining being simple? When I started in a machine shop back in 1976 or so, I asked an old hand about machining! He said “ it’s simple, kid, just cut away all the metal that is not part of the part you are making” ! Lol!! I will always remember that and have used it a few times! Lol Bones
Good stuff, thanks for posting. Very timely for me, as I have 2 projects needing rotary table work that I will soon get working on.
Many years ago I worked for a computer company doing CNC programming for sheetmetal punch presses. Because I showed an interest in machining as well I learned how to do CAD/CAM CNC work for the machine shop. We had three 3 axis machining centers and one 5 axis machine. Did so well with it I ended up managing it and loved the rapid prototype low production computer components we were producing. Wish I had a couple million dollar machine shop at my disposal now making hot rod stuff!
I have a drill mill and a 13" lathe at home, I wanted to learn more so I contact my local high school for night class to take machine shop, they no longer have the course. So I went to our local collage, and they don't have night school any longer. So I asked about full time day course in machine shop, They said that they no longer teach machine shop. I think that's sad....I want to learn but no one wants to teach...I guest everyone want's to push button's today...
Best machining advice I ever received was "Introduce the cutter to the material, And one of them has to be in motion" . Might sound a little smart azz-like, but it helps you think outside of the lines. Example? I cut an internal key way in a bore using my lathe. Material in the chuck/grind a tool bit to shape/use carriage travel like a shaper. Voila'
Bonehead see if you have a local machine shop that will take you on as an intern (free labor) and teach you.
Have you ever used a laser centering tool? I got from an old guy at a swap a few years ago who said he was making them himself. If so, your opinion?
https://www.youtube.com/channel/UCpp6lgdc_XO_FZYJppaFa5w/videos LOts of really good learning is available on youtube. I like this guy. Also, make sure you have a machinists handbook, and learn the speed and feed tables. Old textbooks from tech school are great oo if you can find some.
I don't know how familiar you are with using youtube, but there are quite a few excellent instructional articles available by doing a search. With you already owning a lathe, you will be able to put the information to use immediately. I thoroughly enjoy watching some of these guys doing their thing. If you need help finding good sites, just PM me. Bob
Nice article, thanks for posting it. When I bought my rotary table in the 70s, that was the part of using the table that took me the most time. Because I had no formal training as a machinist, I happened on your trick logically. I thought to myself, I am always centering my projects by chucking something of the same diameter to center the hole, why not do the same with the table. It seemed so obvious after the fact, but it took me awhile to get there. Bob
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