STANDARD & ONE OFF TAPERS, (MORSE TAPERS, MMT TAPERS, COLLET TAPERS...) MACHINE SHOP, MARC LECUYER

"Little Quickie" video number 16. As for all thatlazymachinist videos, this video is aimed at the novice machinist who wishes to develop proper basic work skills. More specifically, this video introduces us to machine tapers. MARC LECUYER, thatlazymachinist.com

[@simpleman283]

I saved this one to my math folder. I know the very basics of trig & algebra. This is exactly the kind of problems that motivate me. Thanks for wanting to help others, take care Marc.

[@pierresgarage2687]

Hi Marc, You just clarified a good point about measuring the taper with a sine bar and a V block. You're right about the order of male and female, God started with male first...... Then it got complicated.... REALLY complicated...! Thanks, Pierre

[@tomsemo8186]

Excellent, excellent, excellent. Look forward to ALL your vids. Well done. On point.

[@phillipyannone3195]

Thank you for that little quickie. I learned a lot about tapers in that 43 minutes.

[@chriscraven9572]

Nice video Mark. Not having a taper turning attachment, it enabled me to set up my compound slide for turning the taper on the hammer project. 2.5 deg half angle gives 0.04366 per unit longitudinal feed, but compound slide moves along hypotenuse so using sin 2.5 deg I get 0.04362 per unit. Set up straight bar in chuck, indicator on compound slide, adjust compound to give 2.181mm (0.0858 in) taper for 5cm of compound travel. Finishing handle tomorrow (I hope)

[@JimmysCanal]

Hi Marc, thank you for this instructional video! All the best Jimmy

[@Ujeb08]

Hi Marc. as usual I enjoyed your presentation. Your explanation of measuring the male taper using a sine bar, gage blocks and V-block was pretty good. I was a little disappointed that you didn't demonstrate using the system with the dial indicator. Maybe in the near future you could supplement the theory on video. Thanks,

[@speakerme11]

Hi Marc Thanks for the dedication and superlative work! A little review of use of the sine bar and jo blocks might be helpful... Thanks again Chuck

[@THATLAZYMACHINIST]

Hi Chuck, here is a link to my sine bar and gauge bloc video. kzbin.info/www/bejne/lZqmpXaMYqmhqbc Thanks for watching and remember that you can link to all my videos on my THATLAZYMACHINIST.COM web page. It's all free and always will be!

[@swarfrat311]

Marc, Thank you for another interesting lesson.

[@whidbeyman]

Strictly speaking, inverse tangent, also called arc tangent, is not the same as "dividing by TAN" or multiplying by the reciprocal of tangent. The calculator function TAN 'raised to the -1 power', is 'inverse tangent' or 'arc tangent', usually abbreviated 'atan'. The function atan(x) calculates "the angle which has tangent x", which is just what you want to solve this type of trig problem, i.e., given the change in diameter over a perpendicular length, what is the half angle? I do appreciate your efforts to explain tapers and their uses, and I've learned a lot from your many videos.

[@THATLAZYMACHINIST]

Thanks for the explanations Paul. Comments such as your push things forward and that is a very good thing. Marc

[@michaelshenoy6050]

i concur with what was said here 8 years ago. :) once you setup your equation correctly tan (?) = .026 you can't isolate the degrees you are looking for "?" by simply dividing by tan. you have to apply the inverse function of tan: atan or tan raised to the -1 power. so to isolate: atan ( tan(?)) = atan (0.026). Because you applied the atan to the left side of the equation you see here that you have to apply it to the right side of the equation also. the left side cancels out and you will be left with: ? = atan(0.026). on most calculators that have trig you have to hit "2nd" to get atan or tan-1. And make sure your calculator is set to 'deg'rees and not "rad'ians or 'grad'ians.

[@shinli1961]

Dear Marc, thank you very much Lesson: 22

[@chuckorlando]

Awesome video brother. I appreciate the links in your videos. I just got the South Bend torn-nado going today in school and it has a taper attachment. I gotta put it to use

[@tzampini]

Excellent video! You mentioned links to other videos 2 or 3 times in this video, but no links were displayed. Did I miss something? Again, great video. All your videos are a wealth of great information! Thanks for sharing, Tony

[@THATLAZYMACHINIST]

Hi Tony, the links will be in place tomorrow or later this evening if I don't fall asleep first. After all I am the lazy machinist.

[@THATLAZYMACHINIST]

Hi again Tony! The links are up and running. Thanks for watching, Marc

[@leftturn99]

Good Instruction, much appreciated, thanks!

[@jimmilne19]

Still learning from you, still enjoying the process! I think you meant to say "larger" at 8:31 when describing that the dowel pin needs to go into a hole. You might check this for me and let me know if I have misunderstood something. I picked up a lot that is now obvious (after your explanations), but were unknowns before. I'm still a bit unsure when it comes to buying tool holders for my mill regarding the relationship between tapers of CAT40, ISO40, NMTB40, DIN2080, BT40 and so on. I believe my mill is NMTB 40 with 16M internal threads for the drawbar. It would be nice to know what tool holders can be used when ordering. Another video quickie? Well, no matter, that was another addition to my brain. Let's see if it translates into skills at the machines! Thanks for sharing.

[@THATLAZYMACHINIST]

Hi Jim, you heard wright, I should have said "larger". I added a message to the video to rectify the problem. Thanks Jim! Marc

[@MrShobar]

Sometimes, dowel pins have a simple longitudinal flat to allow air to be removed from a blind hole.

[@rasmillion]

Great video. I seem to be missing something in the math. How do I divide by Sine using my calculator?

[@morrisgallo2361]

WOW!!!

[@MrEh5]

Little quickie. What no fore play?Shame on you!