MadModder
Gallery, Projects and General => Neat Stuff => Topic started by: Bernd on October 24, 2011, 12:15:17 PM
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Got this off a news group I belong to. Intersting approach to broaching.
http://www.slatertools.com/sales-support-service/videos/rotary-broach-and-tool-holder-demostration
Perhaps one of our talented members can build one and do a build log? :poke: :clap:
Bernd
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Hi Bernd
had ago at making one last year , after seeing that very video :dremel:
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_Rotary%20Broaching%20Head3.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_Rotary%20Broaching%20Head.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1020914.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1020927.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1020950.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1020930.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1020928.jpg)
still needs a bit of refinement :proj:
Rob
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Got this off a news group I belong to. Intersting approach to broaching.
http://www.slatertools.com/sales-support-service/videos/rotary-broach-and-tool-holder-demostration
Perhaps one of our talented members can build one and do a build log? :poke: :clap:
Bernd
Bernd
I watched the video then came back to the post and was going to reply. Then I saw Robs reply. Man that guy is not only good but he is extremely fast. Bet you never figured on anyone doing it quite that quick.
:D :D
Rob
That was quick or was it good timing. :lol: It will be interesting to see when you are finished with the refinements.
:) :)
Cheers :beer:
Don
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Hi Don :lol: :lol: :lol:
Just good timing :med: ,,,,,, made it last Christmas (i think ) ,,looked and interesting project ,so thought i would have an attempt at making one :dremel:
works ok ,,,,,,, but i screwed up the bearing fit :doh: so i need to re machine one part .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1040026.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1040027.jpg)
it still work in progress
Rob
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Jeeeeees Rob, I can't post anything new. :( :lol: :lol: :lol: :lol:
Nice job. And like Don said, "your fast".
Bernd
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Bernd
Don't you just hate that when you see something that you think is new and great. So you rush out to tell the rest of the world only to find out that everyone else already knew about it. It has happened to me a few times too. :lol: :lol:
Cheers :beer:
Don
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SORRY Bernd :lol: :lol: :lol:
Its still needs some refinements ,,,,,, was planning on doing a build when it was all sorted ,,,,,, just :proj: keeps getting in the way :doh:
Rob :dremel:
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Ok Rob your forgiven. :thumbup:
I know all about that :proj:. I've got a couple of those going right now.
Bernd
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Rob,
That's a nice bit of machining you did. :clap: :clap: :clap:
:beer:
DaveH
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Thanks Dave :beer:
Rob :D
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Rob I would really like to make one of these. I hope I can ask a couple of questions without showing how ignorant I am? How do you get the tapered shape on the two main parts. Are you sawing off the shape as close as possible and then filing or grinding to get it to look good or is this done on a rotary table.Are you using two cheap bearings Would a thrust bearing also not maybe work better here as well.How much strain does it put in a lathe to do a broach. Could this also be used on a milling machine to broach as well.
Have you made any broaches for yourself or are you buying broaches. This would be useful for making the odd tap handle that is obsolete in plumbing so it will only be used for brass.
would like to try and make my own broaches but I think it may be beyond a home shop ability. Square I can probably handle but I tried to make a 8 mm spline broach with 20 splines and was not successful. Would you have a suggestion as to how a spline broach could be made. Regards Eugene
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Hi there Eugene
No problem , ask away :med:
How do you get the tapered shape on the two main parts. Are you sawing off the shape as close as possible and then filing or grinding to get it to look good or is this done on a rotary table.
I used a R/T for the job ,,,, it can be done by hand just the same :dremel:
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1020943.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1020939.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1020948.jpg)
.Are you using two cheap bearings Would a thrust bearing also not maybe work better here as well.
Yes i just used a couple of cheap bearing that i had at hand ,,,,, thrusts would be a much better job , now i no it works i will make a better job of it :dremel:
How much strain does it put in a lathe to do a broach.
Not allot in brass and ally ,,,,,,,,,,,,,,,, the larger the broach the more grunt required ,, i dig out info on that .
Could this also be used on a milling machine to broach as well.
Possibly never thought about it :med:
Have you made any broaches for yourself or are you buying broaches.
Yes i made the broach myself ,,, i used Silver steel / drill rod , water hardening ,, worked fine on brass ,, broke on stainless :lol:
This would be useful for making the odd tap handle that is obsolete in plumbing so it will only be used for brass.
Just the job :headbang:
would like to try and make my own broaches but I think it may be beyond a home shop ability. Square I can probably handle but I tried to make a 8 mm spline broach with 20 splines and was not successful. Would you have a suggestion as to how a spline broach could be made.
Still thinking on that one :scratch:
Rob
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The doodle i used to make mine
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_Broach%20holder%201.jpg)
Rob
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Very Nice. Can you elaborate on its function and use, how come you adjust the clamp bolts in 2 axis not one ?
Joules
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Rob,
Show off :lol: :lol: :lol: :lol: :lol:
Nah - nicely done.
Any chance you can fix your avatar before it induces an epilepsy fit. :D :D :D
:beer:
DaveH
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Hi Joules
Very Nice. Can you elaborate on its function and use,
Joules
Did you not watch Bends video :poke: ,,,,,,,,,, its for poking odd shaped holes in things :lol: :lol: :lol:
how come you adjust the clamp bolts in 2 axis not one ?
Ease of manufacture ,,,, other wise you would have to devise some other way of keeping perfect alignment on one axis
Cheers Dave :beer:
Any chance you can fix your avatar before it induces an epilepsy fit. :D :D :D
:beer:
DaveH
New coil pack on order :lol: :lol: :lol:
Rob
Edit ,,,,,,, fixed now Dave :med:
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Hi Rob
Do us all a favour... :thumbup:
You wouldn't like to consign that lurid hyperactive custard thing to the crap bin would you ??
Find something with a bit of culture eh ???
I presume it is custard???
Aaarghhh .... not pureed canary ??? Oh Nooooooo ............. blaaaargh
BC
Good job we can turn off avatars :med: :med:
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An old saying comes to mind. Be careful what you ask for as you might not get what you expected. :lol: :lol: :lol:
Cheers :beer:
Don
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Thanks Rob, :)
Just trying to think who your new avatar reminds me of? :lol:
:beer:
DaveH
PS I don't suffer with epilepsy - I just said that to make you feel sorry for me. :D :D :D
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:lol: :lol: :lol: :lol: so you not impressed with my new avatar Dave BC :(
I thought it was just the job :lol: :lol:
Rob
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Personally I think it's a good likeness of Rob.
John S.
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Personally I think it's a good likeness of Rob.
John S.
Since you have pointed that out, I have to agree.
Yet another objectional feature ... :lol: :lol: :lol: :lol:
BC
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It is amazing how synchronicity creeps in. The latest Model Engineering Workshop - No 185 has an article on construction of a rotary broach and the tools to use in it. Michael Cox has included all the drawings. If you are interested in rotary broaching, it might be worth a look. :wave:
Jim
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It is amazing how synchronicity creeps in. The latest Model Engineering Workshop - No 185 has an article on construction of a rotary broach and the tools to use in it. Michael Cox has included all the drawings. If you are interested in rotary broaching, it might be worth a look. :wave:
Jim, it's all on his website, too: http://mikesworkshop.weebly.com/rotary-broaching.html
Andy
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Thanks Andy, that site has some really great stuff on it. Mike's mods to his 6x4 bandsaw in particular fixed a whole bunch of things that I should have fixed instead of moaning about them. :doh:
And now Mike has paved the way.
Thanks for pointing me to the site.
Jim
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Hi Rob,
I know this is an old topic (just like me :lol: ) How is the rotary broach you made - now in retrospect would you change any thing?
I'm thinking of making one. Maximum 6mm squ/hex.
:beer:
DaveH
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Hi Dave
A bit late with the reply :Doh: , truth is I have only used it a few times so I cant really pass judgement . I would probably make it a bit smaller .
Rob
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Thanks Rob :thumbup:
:beer:
DaveH