I finished the dividing head so here is some photos of the project
this is the plate with the most holes
boring one of the plates
the fixture for mounting the plate on the dividing head is also used on the lathe to machine them
start of drilling the indexing holes once all 3 plates are done I'd drilled close to 500 holes took about 5 hours
building the gingery dividing head
Moderator: Harold_V
Re: building the gingery dividing head
Last edited by norman on Sat Jan 22, 2011 10:59 pm, edited 1 time in total.
Re: building the gingery dividing head
all 3 plates are done I also have 1 undrilled extra plate not shown.
each plate has 6 rows drilled and each row is indexed using the strips of paper glued to the rim
this is the cast tail stand for the dividing head
completed dividing head
each plate has 6 rows drilled and each row is indexed using the strips of paper glued to the rim
this is the cast tail stand for the dividing head
completed dividing head
Re: building the gingery dividing head
completed tail stand on the mill. I'm milling a gear testing out the dividing head
view over the tail stand in my hurry to try it out I didn't center the cutter so I ended up with a gear with its teeth leaning to the right. Good news is the dividing head indexed all the way through and ended up right back where it was supposed to be
the gear will go into the scrap bin and get remelted
I put a cover over the gear train to keep the chips out.
view over the tail stand in my hurry to try it out I didn't center the cutter so I ended up with a gear with its teeth leaning to the right. Good news is the dividing head indexed all the way through and ended up right back where it was supposed to be
the gear will go into the scrap bin and get remelted
I put a cover over the gear train to keep the chips out.
Re: building the gingery dividing head
Couple of views of the dividing head
the sector arms are necessary to keep you from getting lost on the hole count
you can see the high tech cover in this shot,so I made an aluminum one once I'd finished the test gear.
just another view of the lopped sided gear. It took 30 minutes from start to finish of the gear
The dividing head is on my home made mill (Gingery design)
For less than $100.00 I have a dividing head which will work for me I had a great time building these machines, Mill,Shaper,and the dividing head plus all the cutters.
the sector arms are necessary to keep you from getting lost on the hole count
you can see the high tech cover in this shot,so I made an aluminum one once I'd finished the test gear.
just another view of the lopped sided gear. It took 30 minutes from start to finish of the gear
The dividing head is on my home made mill (Gingery design)
For less than $100.00 I have a dividing head which will work for me I had a great time building these machines, Mill,Shaper,and the dividing head plus all the cutters.
Re: building the gingery dividing head
How did you index the plates to drill the holes? It's kind of a chicken and egg problem.
Steve
Steve
Re: building the gingery dividing head
Steve
I have a photo on the first page of using the indexing strips glued around the rim to guide me on drilling the holes. There is a cursor clamped close to the rim of the plate that guides me as I drill Gingery show how to make the strips he calls it dropping perpendicular lines.
If your worried about perfection then you probably won't try building a dividing head.
For me as its a hobby, I do not worry about perfection and don't plan on building anything for NASA. For my use this thing works great. It was a real fun project and was not that hard to make.
I have a photo on the first page of using the indexing strips glued around the rim to guide me on drilling the holes. There is a cursor clamped close to the rim of the plate that guides me as I drill Gingery show how to make the strips he calls it dropping perpendicular lines.
If your worried about perfection then you probably won't try building a dividing head.
For me as its a hobby, I do not worry about perfection and don't plan on building anything for NASA. For my use this thing works great. It was a real fun project and was not that hard to make.
Re: building the gingery dividing head
OK, I see. You are using the strips for the divisions, and each circly uses a different strip.norman wrote:I have a photo on the first page of using the indexing strips glued around the rim to guide me on drilling the holes. There is a cursor clamped close to the rim of the plate that guides me as I drill Gingery show how to make the strips he calls it dropping perpendicular lines.
I have a Pratt & Whitney dividing head and I managed to find one plate for it. I may try to sit down and see what circles on the other two plates can be done from that one. Probably a succession of doing what I can do on the one, then using the other two partial plates to do the rest. Not a big priority right now. Too many other things to do.norman wrote:If your worried about perfection then you probably won't try building a dividing head.
For me as its a hobby, I do not worry about perfection and don't plan on building anything for NASA. For my use this thing works great. It was a real fun project and was not that hard to make.
Nice job on the head. Looks like it was a fun project.
Steve
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Re: building the gingery dividing head
HI
I built one of dave's dividing head back in 1986 and broke it out to make some gears the other day.
I made a foot controller and used the gears to rotate a pot.
here is a youtube of the foot pedal its the second one on the video.
have fun
Tom
I built one of dave's dividing head back in 1986 and broke it out to make some gears the other day.
I made a foot controller and used the gears to rotate a pot.
here is a youtube of the foot pedal its the second one on the video.
have fun
Tom