Gear c-hook

[octhesax]

Hi guys,

Has anyone used the MC Gear c-hook succesfully?

Im inputing the dim that I do know. like outside dia.,pitch dia.,number of teeth, and root rad.

I need to know the pressure angle(or formulato get), and root dia. (or formulato get). Some values automatcaly change others(i.e.diametral pith)when pitch dia. is input.

I am trying to draw an American standard tooth form sprocket (no. 80 chain)with not much luck. my head wants to explode if I use the formulas in the machinist handbook

thanks for all the past,present and future help.

scar(aka octhesax)

 

[ 06-04-2003, 02:28 PM: Message edited by: octhesax ]

[Craig Madsen from CM3D]

A gear and a sprocket are two entirely different animals. The formulas for each are different.

[octhesax]

well I guess that explains why it doesn't work!

 

any MC c-hooks out there that do sprockets maybe??

[MACHINEMASTERG]

most sprocket manfactures give the info in there catalogs for the different sprocets tap that knowledge draw the tooth and rotate it around

 

hth

[Allan Brown]

"Now is the time on Sprockets when we dance..."

 

I think a Mastercam user in Quebec developed a sprocket C-Hook.

 

Contact me by email and I'll give you the guy's name and phone number.

 

[ 06-04-2003, 03:56 PM: Message edited by: Dave Thomson ]

[MACHINEMASTERG]

quote:

---

"Now is the time on Sprockets when we dance..."

 

---

pet my monkey go on pet it

[Philcott]

Dave,

 

quote:

---

"Now is the time on Sprockets when we dance..."

---

I don't know what this refers to. Can you explain?

 

Phil

[Tony]

It was a SNL Skit With Mike Meyers a While back.

[Philcott]

Thanks Tony,

 

I haven't watched much snl lately. My work day starts at 6:00 am so I usually fall asleep in a chair trying to stay up late.

 

Phil

[Roger Martin from CNC Software]

Here is a bit more about Dieter and his monkey Klaus.

 

Some great Dieter quotes and a few sound bites.

 

Der Sprockets

[McRae]

Thanks to all, there is a touch of Scarborough in all of us...

[Scott Bond]

Hi all

quote:

---

I am trying to draw an American standard tooth form sprocket (no. 80 chain)

---

I have made these for a few chain wheels companies. I made them for BMX racing chain wheel type sprokets. They must be near perfect to work with out a de-railer. I made each size,(After alterations from the gear chook),,I then ran that size on my bike, then to the CMM, then altered the programs a few times for wear. So that my box stock gear is already broke in (Race Ready).

[Tony]

Here is a favorite of mine

http://celebritysoundboards.com/fmj.html

 

Now back on topic...

The toughest Gear/thread/sprocket calculations

(To get the molded part right) are shrink for plastic.

 

That stuff has been farmed out since day one!