Loved the video, being a toolmaker myself I can honestly say that the sad fact is most of the people who know how to do this are gone. Got my journeyman's card in 2000 and was trained by what I call the old school guys that came up before cnc and the things you show unfortunately are a dieing art....and it is an art form. Never had a problem finding a job but finding the people who truly understand what you're doing here on a mathematical level is hardto do. Keep up the vids, we need all machinists to see what it took then, cause there was when was no other way. Note to young machinists: never dismiss the old dude .
+Jason Mills Thanks for your note Jason, made me smile. I totally agree with your comments. In part this is why this channel is here. I want it recorded before it is gone. Keep teaching the next generation!
@DarkShadow Good comeback - the old fitters were pretty good though - you young guys are now the draftspeople and the machinist - that's the way of technology I guess.
Never made one like that because I came into the trade when cnc machines were just starting. I had an older toolmaker explain it on a large cincinatti mill we had and it kinda made sense but never seen it done until now. I did okay in math and can see the principle but you made it clear. Thanks! Now if I will ever need it........
Great suggestion I will keep that in mind if I reshoot the video. I'm always cognizant of the length of these videos and strive to be precise. Thanks for your suggestion.
A picture is worth a thousand words. I learn by seeing things done, as most good mechanics do. Machining is something I want to dabble in, and this will be bookmarked for reference. Tricks of the trade are so valuable, don't think for a second that you were wasting your time. Most "Machinists" these days wouldn't have a clue without a CNC.
Often there are several ways to do the same thing...when I am thinking of a video I try to think of all the possibilities (I don't always get it right!). The head tilted, I felt, shows the capacity of the machine. I'm glad you stopped by, thank you.
Hello Brad, My name is Daniel Genremicael, it's ok if you do not recognize me but I recognized your voice, meaning I enjoyed every class you taught me. Glad to have found you on youtube & thank you for all the knowledge I gained from you. (I was a 1st year machinist in 2006 from CCIS)
The shaft coming out the back of the dividing head is geared to the lead screw (table) in this case. The table feed is driving the dividing head which in turn drives (revolves) the chuck. This "times" the table feed to the rate of the chuck's revolution creating the cam. Does that help?
I'm a pretty good G and CAM programmer and machinist, but none of that is quite as rewarding as a real all mechanical setup. Computers make us stupid, and even CNC's use trig tables in a database behind the scenes for speed reasons (not actual calculation on the fly). I love seeing proof that the old iron isn't dead yet.
I'm with you. I like CNC, but retaining the old manual skills is never a bad idea. Relegating them to the dustbin is, IMO, very shortsighted. Besides, manual machining is very satisfying.
Last time I saw a dividing head geared to a lead screw was over 40 years ago. I thought it was all cnc now. Surprised there is still anyone left alive who can do it "old school" :-)
hi!, i have been machining for just about 2 years. learned the lathe, milling and shaper. maybe you could demonstrate how to cut worm gears and how to go about the set up using the milling machine. i enjoy machining, and it pays a lot. LOL. thanks for posting the video.
doesn't the shaft coming out of the back of the dividing head turn the dividing plate which turns the shaft with the handle or does the shaft with the gear connect directly to the shaft with the handle?
i got that part. what i am asking is the shaft going into the dividing head that comes from the lead screw, does that turn the dividing plate (with all the holes) which turns the shaft that the crank is mounted to which then turns the dividing head or does the shaft coming from the lead-screw go strait to the shaft the handle is on? if shaft coming from the lead-screw turns the dividing plate you could just index like normal if it turns the handle then yea you have to pull a gear.
Excellent presentation, camerawork and explanation. What do you do if you need deeper cam or a cam like a full ellipsis like a valve movement on a bike (NSU) ?? Your table movement would had to be reversed at one point. R.S.P.Eng.
Robert Silas Yes, the camera work is sometimes an issue for me. Honestly can't say I have it all figured out...some videos end up in the delete bin. At the end of each lobe the gear is removed from the dividing head, basically putting the dividing head in neutral, and the table is moved back to the start position for the next lobe. Gear is installed and procedure repeated. Thanks for watching and commenting.
From the picture you sent I can see your problem. If you can remove that housing there should be a gear on the table lead screw. You should be able to add an idler (you might need to machine a bracket) and gear it to your dividing head. An alternative is to raise your dividing head, you will still need idlers to mesh your gear train. Thanks for sending the picture.
Very good. I started as an engineering apprentice in a large international engineering firm in Belfast UK. Maths were always used from day one for marking out etc. Especially trig. When I moved to the Toolroom maths more and more using tables and charts and logs,circa 1976. Then I got my Rockwell 64rd calc and all went even better. Then I got promoted to NC programmer for milwaukee matics and up and up. I'm 60 now and semi retired but it's all still in there. Great days. ,,, post script,, I wish I could have a devlieg 3h 48 in my garage....ah well.
This is amazing. I have a small home/hobby machine shop in pole barn and always wanted to learn these skills. I'm curious about one thing though. If someone handed you a cam that you knew nothing about, how would one go about (mathematically) figuring out how to setup a job like this to produce an exact replica? Again, thanks for sharing and hope to see more like this, but with even more detailed number crunching.
If you measure from the center to the outside you can calculate the change in size, this becomes the rise of the cam. Once you know how many degrees the rise occupies you can set the mill to cut it. Thank you for watching and your post.
Yeh I'm the same as tomte47 on this one. As a student, we had to mill a helical spline using differential indexing for an exam. Took all day and I never had to do it again. Very interesting video. Thanks a lot for uploading.
Sir,need a help from u...a hob cutter of 12 module got vent on its cutting face and i have planned to grind it using indexing method mounted on my traditional cylindrical grinding machine...as the hob has some helix angle, iam finding it difficult to index it... your suggestions will be very helpful to me...
As a Hobbyyist this is indeed all a kind of magic for me. Just awesome, if not beautiful what U Guys as Toolmakers, Instrument Makers etc. were trained into. BTW, what make of Milling Machine is that ??? Looks so much like a robust German precision Deckel, which can't be, seeing U are in Canada. But then one never knows. Keep the Videos rolling as, I reiterate, at 69 years young, we just don't stop learning. Thanks a zillion ATB aRM
Good morning from Canada aRM, I saw you wrote twice so I will reply to both here if that is ok. I laughed at your young man comment, like yourself I've been around the machineshop for a few years. I work with two South Africans, good guys! I've been lucky enough to do this for forty years and I still find really neat things to make. I believe the machine in the video is a Correa, but it may be a Lagon. Forgive me I'm currently on holidays...still working shoveling snow, big sigh! Thanks for your kind letter. Happy New Year.
I would swear, listening to Your voice, that U were indeed in Your late Thirties. Rare to find a good healthy voice sounding so Young. Guess it's the good, real hardworking life U had been leading that shows even today. Thanks for taking the time to respond. Much appreciated LORD Bless and may Your shadow always stay Long !!! And all the best to U too, Sir for 2018 aRM
The problem you have is the hob is a "form cutter" which means it is relieved behind the cutting edge. If you sharpen it the form becomes smaller requiring the table to be moved and take several passes. You will see grooves along the hob parallel to the bore, the cutter face is found here not the OD. If you cut the OD you will change the envelope seat of the worm. Hope this makes sense.
What went wrong exactly on the last lobe? The first three went fine. Just curious. Post more videos soon please. Thanks for sharing your time and talent with us.
machiningmoments It looked like you cut the video off a few seconds early and then the scale across it kinda made me think something happened. I was just curious, not complaining or knocking you. Please post some more videos. I enjoy all the information you share. You're a very talented machinist and teacher.
ha! I have not seen anyone actually have any skills post a video on milling on youtube lol.... Seriously, When I worked with all the older people that actually knew how to mill stuff without a button and a computer learned so much. It's a shame most don't have basic skills even like this anymore. I know the best of both CNC and hand milling. But when all the new kids couldn't read a non-digital caliper... Life was over for this art in the usa. all the jobs went over seas
So Brad. too clarify, Starting from the first lobe. You moved the table 1''. to cut lobe 1. Then you turned feed off, spindle off..take back gear off...move table back to '0'. move table towards cutter, gear back on, dial at '0' ...spindle on, feed on, move the table until dial reads 1". and then repeat the process for the other 2 lobes right?
@ MachiningMoments My other post was for Your viewers.. I find this video very reminiscent of the Good old days.. You're great at explaining everything.. Which is another lost art of the Journeymen teaching the apprentice. Now a days it's hard to find a shop with an apprenticeship program.. You-tube has opened the door for many people's passions.. Thanks !!
This is an excellent very well structured and clear demonstration video. Please would I be able to use this video in my teaching of engineering apprentices ?
This is a teaching school and the videos are meant to help the students and by extension anyone else who is interested. Yes it is a good machine. Thanks for your post.
When I did my time a toolmaker set up to mill a worm drive on a blank. I was gobsmacked at how he set it up.....The big bible book came out and lots of tapping on the new fangled casio calculator.....1977 lol
I sucked at math in school.. i mean badly sucked at it.. But after taking upp machining as a hobby.. lets say making complex calculations in my head has gotten way easier.. mostly because i can apply it to something usefull.. I hope CNC never takes over completely in schools, that would ruin future generations.
You're welcome, I'm just in the process of learning to use a lathe, I don't even have a Mill yet, but I bought a dividing head on ebay cause it was such a good price, not really knowing much about them, which led me to your video, I planned on using it to machine flat surfaces on round stock, but wasn't aware of what they are really used for, seems like quite a capable bit of kit.
Good on you! You will love the possibilities machining opens up and it's fun. Have a look at my Cam Milling video for possibilities with a dividing head.
@@machiningmoments now I gotta wrap my head around all this, figure out universal joints to drive the head/cross slide combo, and write a basic program that you input amount of cam rise, the gear ratios available, and let it spit out the table/head angle and length of end mill needed. Cheer from Akron, Ohio.
Actually nothing, it was done for demonstration (teaching) purposes. I felt a multi-lobe cam would work best for this purpose. This type of a cam may be found in a clock for example or a lock...a two lobe cam similar to this is often found on the back door of a transport truck's trailer. Thanks for the post.
Perfect example of why manufactured items cost so much back when my grandfather was working. Today it's all gcode on cnc with most of the work done in cad office
If I had the time I'll try it on a vertical mill with a rotating table which rotates while the table move into x-x direction. Now the setup of that will be a task and a half. The Old Bob
+ThomasTheSailor Chubby Yeah, it was a real eye opener to use the math I'd learned in school that everyone said we'd never need as computers were coming into the forefront of everything. As a former pipefitter and welder from the petrochemical industry, it was a real help up the totem pole just to know simple geometry and algebra. I was running crews of guys half again my age, but while I may have known how to read the plans better than the others, I'll be forever grateful for all of the commonsense things they taught me in the field. Now I'm hooked on learning how to machine things and will be brushing up on my math, and hopefully even expanding it to include Trigonometry! :)
Knolltop Farms Go for it.. You'll never regret it.. It actually creates another urge to learn.. I love it.. I actually have a CNC wood router and a craftsman metal lathe at home, cuz I love it.. It's alot more fun when You can do your own projects. There's a life time of things to learn..
ThomasTheSailor Chubby Thanks man, I'm already set up with an appointment at the somewhat local Jr. college's counselor's office to see about enrolling. I too have an Atlas lathe(10x36 TH 54) and also a 1919 South Bend 13" with a six foot bed and I'm in love with making things again. I burned out on welding on refineries and tank farms, but having a home shop has kindled a new fire in my belly, and my lack of know-how is holding me back. So, like Rodney Dangerfield did in the 80's, I'm "Going Back to School" :D
No worries always like talking to the trades. Where did you go to school? If you had the opportunity to do this good on ya, it is being fazed out...CNC.
+Thaddeus M Machinery's handbook. The best 100 bucks I've ever spent. Of all the tools I have and use I can't think of a more valuable one. It gives all the formulas you could ever imagine or need.
+User Name Hi. If you had or still have your old brown Kennedy 520 machinist's tool box, the big drawer in the middle is for the Machinery's hand book. You knew that!
ya.. one of our operator has misfeeded the cutter and tip has been cut....we thought of grinding them using indexing head.. but i dnt thnk its gonna work nemore....it was 12 module cutter...
Calculate the lead for 180 (half of 360 degrees) as the cutter reaches that point add a gear to the train (so the dividing head spins in the other direction) and feed the table in the opposite direction.
On a piece of paper draw a circle, the diameter will be twice the distance from the center of the heart to the bottom. Now draw vertical line through the middle of the circle touching the circle at 12 and 6 o'clock. Draw your heart starting at 6 o'clock and (uniformly) moving inward until you get to 12. Now uniformly move back out from 12 to 6 o'clock moving in the same direction. It doesn't matter if you went clockwise or counter-clockwise. You should now have your heart inside the circle. The circle is the material you start with the heart is the material you finish with. Now measure from the center of the circle to the bottom, 6 o'clock, point of the heart. Measure from the center of the circle to top of the heart, 12 o'clock. Subtract top value from bottom value, the answer is HALF your lead (based on the change in 360 degrees). I hope this makes sense.
this is not problem to figure, but if you have to do it. Now days, most of the shops have at least one cnc, so this technique is obsolete, almost. All be it i use dividing head quite allot on manual mill, mostly for holes, and few slots maybe.
+machiningmoments I agree with this! I believe that in order to master anything you need to have the basics down. I still use machining methods like this because my shop is still young and I'm forced to do things the old school way (manual machines), but in the end I'm so glad i learned because later on cnc machining will be available to me. This is a great video! Thank you for taking the time to post this!
I'm a younger guy, a hobby machinist, and I find this stuff really interesting. I just bought copies of some books published by Moore Precision Tools, particularly _Holes, Contours and Surfaces_ and _Foundations of Mechanical Accuracy_. The first book has all of the Woodworth Tables in it from 3 to 100.
Loved the video, being a toolmaker myself I can honestly say that the sad fact is most of the people who know how to do this are gone. Got my journeyman's card in 2000 and was trained by what I call the old school guys that came up before cnc and the things you show unfortunately are a dieing art....and it is an art form. Never had a problem finding a job but finding the people who truly understand what you're doing here on a mathematical level is hardto do. Keep up the vids, we need all machinists to see what it took then, cause there was when was no other way.
Note to young machinists: never dismiss the old dude .
+Jason Mills Thanks for your note Jason, made me smile. I totally agree with your comments. In part this is why this channel is here. I want it recorded before it is gone. Keep teaching the next generation!
+Jason Mills On a simple 2-3 axis CNC, this part would be a piece of cake with a simple set up!
@DarkShadow Good comeback - the old fitters were pretty good though - you young guys are now the draftspeople and the machinist - that's the way of technology I guess.
Getting to be fewer of us "old school" guys all the time. Thanks for posting!
Being able to apply is helpful to understanding concepts. I'm glad it made math easier for you! Thanks for posting.
I'm glad you enjoyed it, it is a neat process. Thanks for your note.
It's a nice thing to have in your bag of tricks! Glad you stopped by!
Never made one like that because I came into the trade when cnc machines were just starting. I had an older toolmaker explain it on a large cincinatti mill we had and it kinda made sense but never seen it done until now. I did okay in math and can see the principle but you made it clear. Thanks! Now if I will ever need it........
great info never new how they cut cam's befor love your work thanks for your time
Great video ..! thanks for posting these. they are really helpful for someone just getting into cnc machining ..!
Great suggestion I will keep that in mind if I reshoot the video. I'm always cognizant of the length of these videos and strive to be precise. Thanks for your suggestion.
Thanks for your suggestion when I redo it I'll drop you a line! Have a great summer.
Thank you, I really guard machines like this as they are hard to find today.
A picture is worth a thousand words. I learn by seeing things done, as most good mechanics do.
Machining is something I want to dabble in, and this will be bookmarked for reference.
Tricks of the trade are so valuable, don't think for a second that you were wasting your time.
Most "Machinists" these days wouldn't have a clue without a CNC.
Thank you for your kind words James. Machining has been very good to me and it is a love of mine. I hope you find it as rewarding.
great demo thanks for taking the time to make videos .
Often there are several ways to do the same thing...when I am thinking of a video I try to think of all the possibilities (I don't always get it right!). The head tilted, I felt, shows the capacity of the machine. I'm glad you stopped by, thank you.
Great presentation! I have done this before yrs ago, and I remember it was a real head scratcher.
Thank you
Thanks also, and Happy Christmas from Ireland!
Hello Brad,
My name is Daniel Genremicael, it's ok if you do not recognize me but I recognized your voice, meaning I enjoyed every class you taught me.
Glad to have found you on youtube & thank you for all the knowledge I gained from you. (I was a 1st year machinist in 2006 from CCIS)
Hello Daniel, I remember you well. So nice to hear from you. Thank you for your kind words. I hope all is well with you.
Thanks glad you enjoyed it, thanks for taking the time to leave a message!
Sounds like you have been around. I started my apprenticeship on Fanuc punch tape. CNC has come a long way!
Thank God for CNC machines. "Implying this is work we don't have to do today".
Yes, CNC is interesting too. You explain very well by the way. I"m a manual guy myself.
Nice demo! I'd really like to have that mill and tooling in my shop!
Can you put an idle gear in the setup?
That would be my suggestion. Does your hob need sharpening? Typically they cut bronze and last a long time!
I feel it helps to understand what the CNC is doing. Thanks for your comment.
I must be old, I think this is neat!
The shaft coming out the back of the dividing head is geared to the lead screw (table) in this case. The table feed is driving the dividing head which in turn drives (revolves) the chuck. This "times" the table feed to the rate of the chuck's revolution creating the cam. Does that help?
I'm a pretty good G and CAM programmer and machinist, but none of that is quite as rewarding as a real all mechanical setup. Computers make us stupid, and even CNC's use trig tables in a database behind the scenes for speed reasons (not actual calculation on the fly). I love seeing proof that the old iron isn't dead yet.
Glad to see there is someone out there that thinks like me! Thanks for the comment!
I'm with you. I like CNC, but retaining the old manual skills is never a bad idea. Relegating them to the dustbin is, IMO, very shortsighted. Besides, manual machining is very satisfying.
I prefer the manual also!
Very clever. It's like a time machine going back to 1959. Or before. Life was horrible without CNC. But America was great then.
Last time I saw a dividing head geared to a lead screw was over 40 years ago. I thought it was all cnc now. Surprised there is still anyone left alive who can do it "old school" :-)
Wow. Never seen anything like that before. Many years in shipyard machine shop but nothing like that. Great.
Very interesting to see this technique! I don’t think it’s the method used to make the cams I’ve seen, but it is a very elegant approach.
There are other methods, this one works well with a milling machine. Thank you for your message and watching.
hi!, i have been machining for just about 2 years. learned the lathe, milling and shaper. maybe you could demonstrate how to cut worm gears and how to go about the set up using the milling machine. i enjoy machining, and it pays a lot. LOL. thanks for posting the video.
Glad it helped, thanks for your post.
doesn't the shaft coming out of the back of the dividing head turn the dividing plate which turns the shaft with the handle or does the shaft with the gear connect directly to the shaft with the handle?
And a very Merry Christmas to you also Ireland.
Thank you for your very kind words.
i got that part. what i am asking is the shaft going into the dividing head that comes from the lead screw, does that turn the dividing plate (with all the holes) which turns the shaft that the crank is mounted to which then turns the dividing head or does the shaft coming from the lead-screw go strait to the shaft the handle is on? if shaft coming from the lead-screw turns the dividing plate you could just index like normal if it turns the handle then yea you have to pull a gear.
thank you for this video... helped me a lot!!
+Fareed Khan I'm glad it was helpful, thank you for letting me know.
They sure make life easier!
Excellent presentation, camerawork and explanation. What do you do if you need deeper cam or a cam like a full ellipsis like a valve movement on a bike (NSU) ?? Your table movement would had to be reversed at one point. R.S.P.Eng.
Robert Silas Yes, the camera work is sometimes an issue for me. Honestly can't say I have it all figured out...some videos end up in the delete bin. At the end of each lobe the gear is removed from the dividing head, basically putting the dividing head in neutral, and the table is moved back to the start position for the next lobe. Gear is installed and procedure repeated. Thanks for watching and commenting.
From the picture you sent I can see your problem. If you can remove that housing there should be a gear on the table lead screw. You should be able to add an idler (you might need to machine a bracket) and gear it to your dividing head. An alternative is to raise your dividing head, you will still need idlers to mesh your gear train. Thanks for sending the picture.
Very good. I started as an engineering apprentice in a large international engineering firm in Belfast UK.
Maths were always used from day one for marking out etc. Especially trig. When I moved to the Toolroom maths more and more using tables and charts and logs,circa 1976. Then I got my Rockwell 64rd calc and all went even better. Then I got promoted to NC programmer for milwaukee matics and up and up. I'm 60 now and semi retired but it's all still in there. Great days. ,,, post script,, I wish I could have a devlieg 3h 48 in my garage....ah well.
Those were the days before all the automation. Thanks for sharing.
This is amazing. I have a small home/hobby machine shop in pole barn and always wanted to learn these skills. I'm curious about one thing though. If someone handed you a cam that you knew nothing about, how would one go about (mathematically) figuring out how to setup a job like this to produce an exact replica? Again, thanks for sharing and hope to see more like this, but with even more detailed number crunching.
If you measure from the center to the outside you can calculate the change in size, this becomes the rise of the cam. Once you know how many degrees the rise occupies you can set the mill to cut it. Thank you for watching and your post.
great demo
Learned to do that in about 1968. You can have some spectacular accidents.😃
Yes it takes great care. You don't see this much anymore. Thanks for watching Steve.
Yeh I'm the same as tomte47 on this one. As a student, we had to mill a helical spline using differential indexing for an exam. Took all day and I never had to do it again. Very interesting video. Thanks a lot for uploading.
Robert Lewis Thanks for watching and commenting.
The dividing head is geared to the lead screw, if the gear is in mesh and dividing head is turned the table will advance.
VERY GOOD THESE VIDEO,CONGRATULATIONS!
+GUILHERME VICTOR Thank you, appreciate your comment. Thanks for watching.
Sir,need a help from u...a hob cutter of 12 module got vent on its cutting face and i have planned to grind it using indexing method mounted on my traditional cylindrical grinding machine...as the hob has some helix angle, iam finding it difficult to index it... your suggestions will be very helpful to me...
As a Hobbyyist this is indeed all a kind of magic for me. Just awesome, if not beautiful what U Guys as Toolmakers, Instrument Makers etc. were trained into. BTW, what make of Milling Machine is that ??? Looks so much like a robust German precision Deckel, which can't be, seeing U are in Canada. But then one never knows.
Keep the Videos rolling as, I reiterate, at 69 years young, we just don't stop learning.
Thanks a zillion
ATB
aRM
Good morning from Canada aRM, I saw you wrote twice so I will reply to both here if that is ok. I laughed at your young man comment, like yourself I've been around the machineshop for a few years. I work with two South Africans, good guys!
I've been lucky enough to do this for forty years and I still find really neat things to make. I believe the machine in the video is a Correa, but it may be a Lagon. Forgive me I'm currently on holidays...still working shoveling snow, big sigh!
Thanks for your kind letter. Happy New Year.
I would swear, listening to Your voice, that U were indeed in Your late Thirties. Rare to find a good healthy voice sounding so Young. Guess it's the good, real hardworking life U had been leading that shows even today. Thanks for taking the time to respond. Much appreciated
LORD Bless and may Your shadow always stay Long !!!
And all the best to U too, Sir for 2018
aRM
The problem you have is the hob is a "form cutter" which means it is relieved behind the cutting edge. If you sharpen it the form becomes smaller requiring the table to be moved and take several passes. You will see grooves along the hob parallel to the bore, the cutter face is found here not the OD. If you cut the OD you will change the envelope seat of the worm. Hope this makes sense.
What went wrong exactly on the last lobe? The first three went fine. Just curious. Post more videos soon please. Thanks for sharing your time and talent with us.
machiningmoments It looked like you cut the video off a few seconds early and then the scale across it kinda made me think something happened. I was just curious, not complaining or knocking you. Please post some more videos. I enjoy all the information you share. You're a very talented machinist and teacher.
Thank you for your kind words. I'm always looking for ideas if you can suggest anything interesting you would like to see.
machiningmoments Rotary Table Work? There's a lot of videos out there but everyone brings something different and I would like to see your approach.
What is this cam going to be used for?
When the only computer you need is the one in your head, so cool!
Thanks
Mill reminds me of the larger Schaublins... what were they... the 52N or some such?
I believe it is a Corea.
Yes, that would also work.
Where can i get full information/details about the process & other of cam milling?
An oldie but a goodie!
machiningmoments
Very helpful thanks a lot !
It doesn't matter what the subject is I learn best when I can apply it!
ha! I have not seen anyone actually have any skills post a video on milling on youtube lol.... Seriously, When I worked with all the older people that actually knew how to mill stuff without a button and a computer learned so much. It's a shame most don't have basic skills even like this anymore. I know the best of both CNC and hand milling. But when all the new kids couldn't read a non-digital caliper... Life was over for this art in the usa. all the jobs went over seas
The trade has really changed over the years.
So Brad. too clarify, Starting from the first lobe. You moved the table 1''. to cut lobe 1. Then you turned feed off, spindle off..take back gear off...move table back to '0'. move table towards cutter, gear back on, dial at '0' ...spindle on, feed on, move the table until dial reads 1". and then repeat the process for the other 2 lobes right?
@ MachiningMoments My other post was for Your viewers.. I find this video very reminiscent of the Good old days.. You're great at explaining everything.. Which is another lost art of the Journeymen teaching the apprentice. Now a days it's hard to find a shop with an apprenticeship program.. You-tube has opened the door for many people's passions.. Thanks !!
Thank you, I believe in helping to train the next generation.
Thanks!
This is an excellent very well structured and clear demonstration video. Please would I be able to use this video in my teaching of engineering apprentices ?
I'm glad you enjoyed this video, please feel free to show it to your students. Thank you for your kind words.
@@machiningmoments Thank you .
Thank you
Nice machine!^^ ;)
Insanity. That's a really cool method. It's kind of hidden in Machinery's Handbook, but there are tables for it.
Yes it is in the Handbook!
+Anand Rajamani Bee, beep, beep, bee, beep, beeeeker!!! LOL! I love your avatar and your comment. Aloha...KTFs
is this what you would use to make cams for a cva..b&s..or an index..?always made by hand..bandsaw...and draw file
+Miguel Castaneda As long as you can gear it, it should work!
K thanks
sir , thank you very much for the video
+smic1978 Glad it helped, thanks for stopping by.
how to calculate lead of a hob cutter..???
This is a teaching school and the videos are meant to help the students and by extension anyone else who is interested. Yes it is a good machine. Thanks for your post.
When I did my time a toolmaker set up to mill a worm drive on a blank. I was gobsmacked at how he set it up.....The big bible book came out and lots of tapping on the new fangled casio calculator.....1977 lol
There are some pretty cool setups!
Ok. I'm officially packing my bags. I'm going to go work for you.
LOL, don't quit your job!
Thanks for the smile.
Yes assuming a 4" (uniform) lead of cam and a 1" rise. Other 3 lobes. Sounds like you have it!
Hi,is there any possibility to make supercharger lobe (dumbbell shape) by milling machine?
I sucked at math in school.. i mean badly sucked at it.. But after taking upp machining as a hobby.. lets say making complex calculations in my head has gotten way easier.. mostly because i can apply it to something usefull.. I hope CNC never takes over completely in schools, that would ruin future generations.
Hope you liked it!
Oooohh,okay...thank for you post
I have a feeling I'm going to watch more of your videos.
Thank you. I'm glad you think they are worth your time and you made the time to post!
You're welcome, I'm just in the process of learning to use a lathe, I don't even have a Mill yet, but I bought a dividing head on ebay cause it was such a good price, not really knowing much about them, which led me to your video, I planned on using it to machine flat surfaces on round stock, but wasn't aware of what they are really used for, seems like quite a capable bit of kit.
Good on you! You will love the possibilities machining opens up and it's fun. Have a look at my Cam Milling video for possibilities with a dividing head.
Nice work !
Thank you.
@@machiningmoments now I gotta wrap my head around all this, figure out universal joints to drive the head/cross slide combo, and write a basic program that you input amount of cam rise, the gear ratios available, and let it spit out the table/head angle and length of end mill needed. Cheer from Akron, Ohio.
Thanks
hi! can someone give me the english script of this video or even better the one in spanish please?
Thank god we have CNC mills
Actually nothing, it was done for demonstration (teaching) purposes. I felt a multi-lobe cam would work best for this purpose. This type of a cam may be found in a clock for example or a lock...a two lobe cam similar to this is often found on the back door of a transport truck's trailer. Thanks for the post.
great !!!!!!!!
Quite an odd but interesting way.
A small X-Y table on top of an rotary table would make live much easier (in the old days).
Perfect example of why manufactured items cost so much back when my grandfather was working. Today it's all gcode on cnc with most of the work done in cad office
I think it is interesting to understand what the CNC is actually doing.
I like your education videos. Where are you from?
Hi Jad, I'm from Canada.
If I had the time I'll try it on a vertical mill with a rotating table which rotates while the table move into x-x direction. Now the setup of that will be a task and a half. The Old Bob
Robert Silas Good Luck!
I never liked math in high school, But once I got into the trade, Math took on a whole new meaning... Then I loved it. That's the truth..
It makes more sense to me when I can apply it.
ThomasTheSailor Chubby Same here.
+ThomasTheSailor Chubby Yeah, it was a real eye opener to use the math I'd learned in school that everyone said we'd never need as computers were coming into the forefront of everything. As a former pipefitter and welder from the petrochemical industry, it was a real help up the totem pole just to know simple geometry and algebra. I was running crews of guys half again my age, but while I may have known how to read the plans better than the others, I'll be forever grateful for all of the commonsense things they taught me in the field. Now I'm hooked on learning how to machine things and will be brushing up on my math, and hopefully even expanding it to include Trigonometry! :)
Knolltop Farms
Go for it.. You'll never regret it.. It actually creates another urge to learn.. I love it.. I actually have a CNC wood router and a craftsman metal lathe at home, cuz I love it.. It's alot more fun when You can do your own projects. There's a life time of things to learn..
ThomasTheSailor Chubby
Thanks man, I'm already set up with an appointment at the somewhat local Jr. college's counselor's office to see about enrolling.
I too have an Atlas lathe(10x36 TH 54) and also a 1919 South Bend 13" with a six foot bed and I'm in love with making things again. I burned out on welding on refineries and tank farms, but having a home shop has kindled a new fire in my belly, and my lack of know-how is holding me back. So, like Rodney Dangerfield did in the 80's, I'm "Going Back to School" :D
No worries always like talking to the trades. Where did you go to school? If you had the opportunity to do this good on ya, it is being fazed out...CNC.
WOW, that's some old school math!
+Thaddeus M I like math when it can be applied ;)
+Thaddeus M Machinery's handbook. The best 100 bucks I've ever spent. Of all the tools I have and use I can't think of a more valuable one. It gives all the formulas you could ever imagine or need.
+User Name Hi. If you had or still have your old brown Kennedy 520 machinist's tool box, the big drawer in the middle is for the Machinery's hand book. You knew that!
very Good this video i like this work
I'm glad you liked it, thanks for stopping by!
ya.. one of our operator has misfeeded the cutter and tip has been cut....we thought of grinding them using indexing head.. but i dnt thnk its gonna work nemore....it was 12 module cutter...
What other information are you looking for? I don't think there is much available on cam milling that is why I made the video.
Now I understand why I got a CNC machine. Its for us that wants the parts and not the work:)
CNC definitely makes life easier!
Don't you find it interesting to understand what the CNC is doing?
How can I calculate the job lead of a heart shaped cam? Plz help me.
Calculate the lead for 180 (half of 360 degrees) as the cutter reaches that point add a gear to the train (so the dividing head spins in the other direction) and feed the table in the opposite direction.
@@machiningmoments actually I want to know how can I measure the lead of a heart shaped cam? Plz help me.
On a piece of paper draw a circle, the diameter will be twice the distance from the center of the heart to the bottom. Now draw vertical line through the middle of the circle touching the circle at 12 and 6 o'clock. Draw your heart starting at 6 o'clock and (uniformly) moving inward until you get to 12. Now uniformly move back out from 12 to 6 o'clock moving in the same direction. It doesn't matter if you went clockwise or counter-clockwise. You should now have your heart inside the circle. The circle is the material you start with the heart is the material you finish with. Now measure from the center of the circle to the bottom, 6 o'clock, point of the heart. Measure from the center of the circle to top of the heart, 12 o'clock. Subtract top value from bottom value, the answer is HALF your lead (based on the change in 360 degrees). I hope this makes sense.
@@machiningmoments thank you very much.
6mm movement is this right
I'm not sure I understand what you are asking.
this is not problem to figure, but if you have to do it. Now days, most of the shops have at least one cnc, so this technique is obsolete, almost.
All be it i use dividing head quite allot on manual mill, mostly for holes, and few slots maybe.
+11thboris I agree, I hope some would be interested in what the CNC is calculating.
machiningmoments Yea, most of the machinists nowadays dont even know basic math behind it all.
+machiningmoments I agree with this! I believe that in order to master anything you need to have the basics down. I still use machining methods like this because my shop is still young and I'm forced to do things the old school way (manual machines), but in the end I'm so glad i learned because later on cnc machining will be available to me. This is a great video! Thank you for taking the time to post this!
I'm a younger guy, a hobby machinist, and I find this stuff really interesting. I just bought copies of some books published by Moore Precision Tools, particularly _Holes, Contours and Surfaces_ and _Foundations of Mechanical Accuracy_. The first book has all of the Woodworth Tables in it from 3 to 100.
I was young like you...some time ago, LOL. Read all you can get your hands on, it is a wonderful trade/hobby!