FreeHobbing Gears on the lathe Tutorial
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- Опубліковано 16 гру 2021
- A tutorial on how to free hob gears for a lathe thread dial. this video will show what to do and what not to do saving you possibly hours of time by not making my mistakes.
Check out myfordboys free hobbing
• Worm & Worm Wheel Free...
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• Free Hobbing Method Ge...
#machining
#manualmachining
#machineshop
#Freehobbing
#gearmaking
#cuttinggears
#makinggears
#wormgear
Thats pretty cool. Sounds like you had some good pours too. looking forward to that. cheers
Yup just used your method and built off of it , man even though it failed due to gating and risers it still worked in areas. Just have to solve those . Now im headed out to the cnc router tomorrow to make the patters
@@Wrighmachining id be curious to see it. from my experience, you dont need risers or vents. simple sprue and maybe gating depending on the size.
The problem is synchronization and tap tooth cutting double tooth or running out of pitch .Since that is tapered tap how about feeding in to a bottom of the tap and then turn the power feed forward.Trick is to get power feed right so that it synchronizes with the tap pitch.I have never done it so i am clueless how to do it with tapered tap but i guess it has to do with
one full rotation divided by number of teeth tap has ?
i mean this method would work great if you could build a some kind of arbor that spins between centers and is driven by stepper motor and arduino ,then you could control synchronization and you could cut blanks right in the middle by adjusting height .Some contraption that would have E type without E having - in middle made of pipes that can slide up and down,two halfs that can be tighten by a all threaded rod -like a vice .Like one fixed live center on bottom and upper part has a er 32 collet (that holds mandrel with blank,it should lean on trust bearings and one ball bearing ,or conical roller bearing ) with shaft and timing belt pulley.It would turn lathe into a simple gear hobbing machine for fraction of price. You wouldnt be able to do helical gears and some other fancy gears but for simple gear cutting it would work.
Just food for thoughts.
I like the idea I had though of one day converting my mill to CNC. Then driving a rotary table with a stepper/ servo. Then I could do the same operation but to a way higher accuracy. Lol all just money and time. Neither are in great supply. I love the ideas and thank you for sharing.
Ryan I believe the main issue is that the parallel flutes of the tap (of course has a space between them) that allows the blank to wonder when not engaged and then each time randomly re engages
I have had great success with this method using a spiral type tap on non acme threads. Not sure though if spiral is even available with acne threads??
You hit the nail on the head my friend that is it . It has to have at least one tooth 1/4 engaged at any point to have it track .
Learning by dicking around in the workshop is the best way to learn. Next best is looking at someone else dicking around in their wokshop and learning from successes and failures.
Isn't that the truth, just spent the better part of my free time today doing exactly that on YT got some pretty go ideas out of it and short cuts... I hope :)