In this video I demonstrate the geometry required for calculating Tool Radius Compensation. Also see Joe Pieczynski's video: • How to achieve a tight...
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@cncshrops4 жыл бұрын
Loved this. A couple of generations ago, the colleges and company training schools were teaching this stuff to thousands every year. Your teaching style is evocative of those days. Thanks.
@Cookerab4 жыл бұрын
I studied law at UCL Bentham House for a semester. I loved living in England. Your videos are a microcosm of all that is great about England. People with old knowledge to pass on
@markgould8514 жыл бұрын
This goes deeper than I do as a hobby machinist but it's always great to see someone dotting the i's and crossing the t's. It explains some of the discrepancies we have even when we've thought it through. Thanks a lot Mr. Crispin!
@theburrell46263 жыл бұрын
You either get it or you don’t... why didn’t I listen at school 🏫! Well done Mr C
@billshiff20602 жыл бұрын
Kudos for manning up to an error ( which we all make). There are very specific other machining tubers who "know everything" but who can never admit to an error. Respect.
@oldironrecycler4 жыл бұрын
Thought I was dumb before, certain of it now. Great explanation none the less, thanks.
@jimburnsjr.9 ай бұрын
beautiful topic that is still relevant; thank you very much for taking the time.
@ShevillMathers4 жыл бұрын
I would imagine that the people working in a tool room and/or making small parts with very tight tolerances, this would be part of their daily fare. For those of us blacksmithing working to a thou or two level-we would give this a miss. Very interesting and informative-I still like to learn- even at nearly 82 yrs young. Thank you for sharing this. I often work in microns with single fibre optics with hair fine dimensions with square corners-Southern Cross Observatory-Tasmania 42 South. 👍🇬🇧🇦🇺🔭
@AJKandK4 жыл бұрын
To simplify this for you because it was painful to watch you fight with all those triangles. The formula is (90-Angle of part)÷2=X (tan(X)*Tool nose radius)- Tool nose radius= Tool nose shift So, (90-36.098)÷2=26.951 Tan(26.951)=.50845 (.50845*.4)-.4=.1966 Hope this helps. I've ran this calculation thousands of times years ago when we programmed 3D CNC toolpath with manual g-code before the days of CADCAM software.
@jimburnsjr.9 ай бұрын
Thank you very much.
@radriand4 жыл бұрын
its really cool to still see some of this. Kudos to both you and Joe. Math ( Trig, Euclidean geometry, Pythagoras, Abu'l-Wafa and Omar Khayyam... the list goes on) is what we dopy minded humans use to discribe and move about in the awesome, absolute measured universe (Cartesian coordinate system) in our case. Computers just happen to be really good at it, but we knuckle draging folk can still pull it off. Start drawing and finding solutions to triangles, use the new known sides to draw and solve more until you get where you want to go. BTW, I love your attention to detail in your hand drawn diagrams, I deal with lots of people who can not draw with out a computer to save their life. Like everything else in life, Use it or loss it. great stuff!
@fladder14 жыл бұрын
"a game of triangles" that would make a show I'd watch. Excellent video as always. Great to have you back online!
@Rustinox4 жыл бұрын
In school i was always good in machining and mechanics, but i had too much difficulties with the maths. And still have... Thanks for this video, MrCrispin. If i need to i can always come back and watch.
@kevCarrico4 жыл бұрын
what a great video - finding the triangles is the fun part - thank you!
@EverettsWorkshop4 жыл бұрын
It has been a long time since high school math, and now I'm playing catch up, thanks for sharing this as it is a very useful technique to have for hitting dimension properly.
@annekelive4 жыл бұрын
“Soh Cah Toa” brings back mnemonic memories! We also used to say Sines of happiness come after having tankards of ale!
@framavia22014 жыл бұрын
We had a far more obscene rhyme when I was at school - I can't say it on youtube, Some Old Hairy Camels Are Hairier Than Others Are. that was the gist of it anyway!
@Steviegtr524 жыл бұрын
@Nick Maclachlan At college it was . Simple over heating causes awful horrid trouble on aeroplanes.
@brucewilliams62924 жыл бұрын
@@framavia2201 My father taught it to me as Ollie has a hairy old a**hole, Swedes Cant Teach. It's funny how that one stuck with me. :)
@captcarlos4 жыл бұрын
Well I liked it. I did have to play it a few times, pause at each triangles solution to think. And I like Mr Pre-cad-cam's formula. But the explanation was perfect, thank you Mr Crispin.
@mikemoore97574 жыл бұрын
5 out of 4 people struggle with math.
@jeffrawe64864 жыл бұрын
More like 99 out of a 100 mate. 🙄
@markdavies80373 жыл бұрын
Nice one mate
@pappamike1004 жыл бұрын
outstanding work. i was back in Geometry class once more. may i suggest several different color pens if we venture down that rabbit hole again. keep up the good work and thanks for taking the time to share.
@matts_shed4 жыл бұрын
Great video sir had to watch twice to fully get it
@bkailua12243 жыл бұрын
Now days a simple way to draw this is Fusion 360, just draw the tool and draw the feature with the parallel line to the nose radius of the tool and using the dimension command it will tell you the compensation in Y.
@Marzy58214 жыл бұрын
Great stuff Mr Crispin!
@Machine_NZ4 жыл бұрын
Hi MrCripin. Great video explaining this. How about a shop tour of the new shop. Would be very interesting. Regards MachineNZ
@johnmcdyer72974 жыл бұрын
You just fried my brain mr crispin
@AndyKingsmill6 ай бұрын
Awesome!
@jawadibrahim23673 жыл бұрын
Sometimes I feel like I'm doing well with Maths, then I watch a machinist and realize I'm on the right path but not quite at my destination.
@BeachsideHank4 жыл бұрын
I'm of the skill level such that your first presentation would have been spot on for me- no brag, just fact. ☺
@63256325N4 жыл бұрын
My head exploded near the end....🤣 (kidding) Thanks for the video.
@nikond90ful14 жыл бұрын
Thanks for the video.
@joaquinbrandan86643 жыл бұрын
lovely! mindblowing!
@ryebis Жыл бұрын
I came across this when I was trying to confirm my math. I was planning to offset the carriage instead of cross slide, which would be R/sin(taper angle). Since the compound would be set to this angle and travel linearly, I assume it should account for the tool radius. Is there a reason to calculate it like you have done here ? My understanding is for curves and facing operations, you need to add the tool radius to Z offset, for external tapers it's radius / sin(taper angle). Perhaps I'm missing something very obvious.
@paulskelton68364 жыл бұрын
Spot on. Cheers
@Ricardo67844 жыл бұрын
I'm going to sleep now. See you all tomorow.
@davidmathews22193 жыл бұрын
i used to do that on a cnc machine, so glad ive retired.
@A_S_M_R4 жыл бұрын
I watched the whole video...and I still don’t have a clue what I just watched.
@davidkepley43964 жыл бұрын
How's the loco built? That's why I subscribed a long time ago.
@MrCrispinEnterprises4 жыл бұрын
Will be starting up again on the loco in January
@davidkepley43964 жыл бұрын
@Flat Bastard Engineering Channel Yes I know. looking forward to future loco episodes.
@mike_jay4 жыл бұрын
I love a bit of trig
@jasonmoore35576 ай бұрын
So for whatever the angle, it's the ((adj + OPP) - hyp)? Or does it change with different tool rads
@tooladdict74634 жыл бұрын
I really wish I was a clever enough to understand that
@owjfabrication68224 жыл бұрын
👍
@bcbloc024 жыл бұрын
Math is always fun and a necessary evil to doing a good job. 😈
@captcarlos4 жыл бұрын
The cable was just old. He should have checked it before lifting such an Enormous radial arm drill! It was spectacular though!!
@bryanbrunk11864 жыл бұрын
If I was smart enough to follow along with the video I wouldn't even need the video.
@BaldurNorddahl4 жыл бұрын
I can do the math easy enough. But without this video, I would have thought there was an easy way and not even tried to simply calculate it.
@mrmyford4 жыл бұрын
lost it all soon as I saw the pen & pencil come out, too technical for most of us oily rags lol
@kalebpeart84584 жыл бұрын
For the curiosity of most of your viewer's whats your profession?
@71Giggles4 жыл бұрын
kaleb peart he was an apprentice engineer with Rolls Royce - aerospace rather than cars.
@MrCrispinEnterprises4 жыл бұрын
Yes I was an Apprentice at Rolls Royce and I now work there as a process developer on Grinding
@captcarlos4 жыл бұрын
Mr Crispin, Perhaps you could do some grinding videos for our education. Perhaps cylindrical taper, inside and out.. Angle surface etc.
@mcgrorymachined75964 жыл бұрын
thank god for G41and G42! (or is that cheating!!)
@peeeoii27385 ай бұрын
In a non monotonic type two roughing and finishing cycle you will over cut due to the tip direction unable to change mid cycle
@mcgrorymachined75965 ай бұрын
@@peeeoii2738 yes very true!
@drubradley88214 жыл бұрын
LOL.... I thought is was odd, that in the last video, how lazy you drew the lines and marked the datum points... considering, how precise you have ALWAYS in all other videos presented your self, and drawings and explanations and just assumed you were expecting that the subscribers were to just understand the "Gist" of the topic you were explaining, of which you did exceptionally well... Will there be more fun games like this.... If not, I wouldn't want comment and to come off as me being picky or ripping apart your contents of every tiny single thing... under the assumption that there is now game to play.... BUT.... If there is a game, Heck yes, I wanna play... Sooooo, to start with... on the shadow optics... placing the radius gauge on the magnified picture... One then needs to do one more math formulas.... to divide by the power magnifier optics measure....in efforts to acquire the actual size of the radius? right?
@MrCrispinEnterprises4 жыл бұрын
Yes 10 times lens on that one so measure Radius on screen and divide by 10
@drubradley88214 жыл бұрын
@@MrCrispinEnterprises did I win!!!!!!! lol
@captcarlos4 жыл бұрын
But it Was obvious. Just the factor had not been said.