Outer Limits 4x4 Board

Does anyone know where i can get custom gears made need to get one cut with teeth as shown.

|/|
=|/|= <-Shaft
|/|

They are for in a gearbox.

A&A Gear cuttting- Auburn 97488158
Accurate Gear cutting services St Marys 9623 7474
Axis Gear cutting Revesby 9774 1010
C-Mac Engineering and gear cutting Girraween 9631 6000
Gear Makers Kirawee 9521 8659

if you want anymore let me know

gear cutting = $$$

can you give us more information, maybe there is an existing gear or collar out there you could use:?!?!?!

am searhing myself for appropriate gearset, only need one gear approx 100mm dia and 29 teeth

we only do straight cut for use in planetaries

i need staight cut gears bubs but ones that are angled/beveled like those in a toy g'box

cplux wrote:i need staight cut gears bubs but ones that are angled/beveled like those in a toy g'box

I think you are talking about Helical Gears, not straight cut

the gears we make are like the one in my quick drawing

i dont know we may have helical cutters but doubt it as we have no use

yes i supose i am talking about helical gears, didnt know if this was the correct way to describe em or not but.

cplux wrote:yes i supose i am talking about helical gears, didnt know if this was the correct way to describe em or not but.

yeah you want helical

hey bubs, could they cut the inside of a piece of gear for me?

bj on roids wrote:

cplux wrote:yes i supose i am talking about helical gears, didnt know if this was the correct way to describe em or not but.

yeah you want helical

hey bubs, could they cut the inside of a piece of gear for me?

u mean broaching (eg internal spline) yeah - wether they will do it as the machines are running 24/7

I would recommend that you get a pair of new gears cut. You don't know what type of cutters (hob or rack) produced the existing gears and with helical gears this affects the gear tooth profile. And the helix angle is difficult to measure accurately and the slightest mismatch (0.001mm across width) will affect the strength. Cutting a new pair is the only way to guarantee that the contact between mating teeth will be correct. A broken tooth can do a lot of damage in a gearbox if it goes through the mesh of other gears.

Basically you need to determine all gear tooth data and centre distance for the mating gears, the material and heat treatment of both gears. And some gears need profile modification to allow for deflection of the teeth (to prevent interference between the tip of one tooth and the flank near the root of the mating tooth). A *good* gear cutting shop that has competent gear designers should be able to determine the necessary data if you supply both gears an the gearbox. If the gears are worn it wont be possible to get good span measurements necessary to determine the addendum modification factors.

The precision of gear cutting has a great affect on the kW rating of gears. Most gears for automotive gearboxes are case hardened and finished on gear grinding machines. There aren't too many gear cutting shops around that have gear grinding machines.

Also be aware that the depth of the case hardening is critical and needs to be specified correctly. It can be too deep with small module teeth, especially for pinions with addendum modification.

bubs wrote:the gears we make are like the one in my quick drawing

i dont know we may have helical cutters but doubt it as we have no use

Bubs,

Is SolidWorks the tool you draw with?

no Autodesk Inventor 5 - use it min 5 days a week