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+---- Forum: Shapers (http://www.metalworkingfun.com/forum-30.html)
+---- Thread: Gerard's Shaper Design (/thread-935.html)
RE: Gerard's Shaper Design - sasquatch - 11-22-2012
Doing research on my own shaper, i found posted that a shaper was first invented in 1836 ?
RE: Gerard's Shaper Design - 4R8 - 11-22-2012
(11-21-2012, 11:09 PM)f350ca Wrote: Jason, post 19 shows the mechanism. i think its called a Scotch yoke. The slider can be adjusted out from center on the rotating disk to vary the stroke length. Neat mechanism, it cuts with the pin on the top half of the disk and returns faster with the pin on the bottom half.
Yep, that's the post I was referring too.
Thanks for the explanation. The quicker return now makes sense also.
So to clarify, if you had the motor run backwards, the cut stroke would be the quicker (and weaker) stroke. Correct?
RE: Gerard's Shaper Design - f350ca - 11-22-2012
Yep
RE: Gerard's Shaper Design - Gerard - 11-23-2012
Hello
Here are some pictures how you can make bevel gears.
I know that the teeth are not perfect but for slow rotating parts they are certainly good enough.
Cutting the bevel gear on the lathe
[attachment=3801]
Milling the teeth
[attachment=3802]
On this picture the gunk on the teeth is black grease.
[attachment=3803]
Gerard
RE: Gerard's Shaper Design - EdK - 11-23-2012
Thanks for the pictures Gerard. What kind of steel did you use for the bevel gear?
Ed
RE: Gerard's Shaper Design - Gerard - 11-23-2012
(11-23-2012, 04:31 PM)EdK Wrote: Thanks for the pictures Gerard. What kind of steel did you use for the bevel gear?
Ed
Ed
I have used 42CrMo4 steel. This is very good steel for making gears. The gears for the gear box of my shaper are also made from this kind of steel. I could buy a lot of leftovers for about 2.2 Euros/kg ($1.5/pound).
Gerard
RE: Gerard's Shaper Design - EdK - 11-23-2012
(11-23-2012, 04:44 PM)Gerard Wrote:(11-23-2012, 04:31 PM)EdK Wrote: Thanks for the pictures Gerard. What kind of steel did you use for the bevel gear?
Ed
Ed
I have used 42CrMo4 steel. This is very good steel for making gears. The gears for the gear box of my shaper are also made from this kind of steel. I could buy a lot of leftovers for about 2.2 Euros/kg ($1.5/pound).
Gerard
Gerard,
How does that steel machine? It looks like you got a good finish on it.
Ed
RE: Gerard's Shaper Design - Gerard - 11-23-2012
(11-23-2012, 05:00 PM)EdK Wrote:(11-23-2012, 04:44 PM)Gerard Wrote:(11-23-2012, 04:31 PM)EdK Wrote: Thanks for the pictures Gerard. What kind of steel did you use for the bevel gear?
Ed
Ed
I have used 42CrMo4 steel. This is very good steel for making gears. The gears for the gear box of my shaper are also made from this kind of steel. I could buy a lot of leftovers for about 2.2 Euros/kg ($1.5/pound).
Gerard
Gerard,
How does that steel machine? It looks like you got a good finish on it.
Ed
Ed
It is a hard kind of steel steel. The machining is very good with carbide inserts and at high speed (1600-2000 rpm/min). The surface then shines as a mirror. This steel can also be hardened and tempered. It is best to machining kind of steel that I have used so far
Gerard
RE: Gerard's Shaper Design - sasquatch - 11-23-2012
Nice pics and follow up on the bevel gears, thanks for posting this.
RE: Gerard's Shaper Design - DaveH - 11-26-2012
Gerard,
Very nicely made
DaveH