YoshiMoshi3
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- Nov 2, 2022
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Can I use a thread Gauge to get the pitch of a fastener as a gauge to get the pitch for gears between the teeth? Or are specific gear pitch gauges required?
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Thread Gauge for Gears?
- Thread starter YoshiMoshi3
- Start date
txvwnut
Well-known member
I'm going to say no. Even though threads are different pitch design is relatively the same between all threads whereas gears have a lot more geometry in the designs of different gear patterns.
Firebrick43
Well-known member
Specific gear gauges are required
You can either get a couple of sets of DP profile gauges for each pressure angle or get a gear tooth calipers
You can either get a couple of sets of DP profile gauges for each pressure angle or get a gear tooth calipers
I'm not sure what you're trying to do, but a simple spur gear is sized by the Pitch Diameter- which you are not going to be able to measure in your garage, the number of teeth, and the pressure angle. And of course additional dimensions like the bore diameter, tooth width, etc.
For measuring in your garage, you can measure the OD and count the number of teeth to see what you have. But this won't help on the pressure angle. But there are only a few common ones.
For designing a gearbox, you don't care about the OD, you care about the PD, and this is what you use to set the distance between the shafts. And the pressure angle obviously needs to match between your two gears.
Do a little reading about spur gears.
Regardless, the answer to your question is no.
For measuring in your garage, you can measure the OD and count the number of teeth to see what you have. But this won't help on the pressure angle. But there are only a few common ones.
For designing a gearbox, you don't care about the OD, you care about the PD, and this is what you use to set the distance between the shafts. And the pressure angle obviously needs to match between your two gears.
Do a little reading about spur gears.
Regardless, the answer to your question is no.
john.k
Well-known member
Also be aware that gears in things like lathes often dont follow the rules ,so you cant use stock gears to replace damaged ones.
OP
YoshiMoshi3
Well-known member
- Joined
- Nov 2, 2022
- Messages
- 502
Thanks. What does DP stand for?Specific gear gauges are required
You can either get a couple of sets of DP profile gauges for each pressure angle or get a gear tooth calipers
Firebrick43
Well-known member
(D)iametric (P)itch
RoninB4
Well-known member
-Fixed it for you with apologies for being a nit-picking bastage about nomenclature of gears.(D)iametral (P)itch
Cruzan80
Well-known member
Posted in the gear swapping thread as well. If you don't know how to measure gears to start with...
I think you are coming at this from a fundamentally flawed place. Cutting gears is not an easy task. Have you looked at an involute gear profile? It is not a flat shape. Anything off the shelf is highly unlikely to simply be able to drop in and fit. Then you are talking about modifying current mounting holes on expensive equipment, etc. Add to that the ad-hoc battery designs you have brought up before to try and get more power, and this isn't going to end well.
At some point, simply accept that the battery power tool design for what you want to do isn't out there, in a form factor for the job you need. Sorry to be blunt.
I think you are coming at this from a fundamentally flawed place. Cutting gears is not an easy task. Have you looked at an involute gear profile? It is not a flat shape. Anything off the shelf is highly unlikely to simply be able to drop in and fit. Then you are talking about modifying current mounting holes on expensive equipment, etc. Add to that the ad-hoc battery designs you have brought up before to try and get more power, and this isn't going to end well.
At some point, simply accept that the battery power tool design for what you want to do isn't out there, in a form factor for the job you need. Sorry to be blunt.