Cool, thanks

Yes they are independent of each other. The pinion and the gear need to share the same exact values. Thanks for watching.

Glad to give the view. Thanks for watching-

Not sure, but probably. If you are going to try this, let us know how it works out. Thanks for watching

Barber Colemans have machine constants like 12, 30, etc

GearCalculators can do many machine constants with one calculator "Change Gears for Machinery" 6,8,10,12,15,16,18,24,30,32,40,48,60,64 And if you use "Brute Force" calculator, it does not matter what you constant is, as long as you calculate the ratio, it will work.

@@EvolventDesign I was trying to learn about this equipment and when you are going to manufacture helical gears, there is a calculation to correctly assemble the index and feed (in the differential). For engineering straight teeth on this machine, I can use this constant that says, in my case it is 15 and 30 (I have 2 machines). To manufacture helical gears on this machine, it is a little different, you need to assemble the index and feed based on the calculation in the information of the gear you are going to manufacture. The translation of some information directly into my language still confuses me a little.

The index gears, gearbox, and index constant only control the tooth count. The differential gears, gearbox and differential constant control the helical angle - coupled with the position of the hob head. Watch this video - it shows the setup kzbin.info/www/bejne/pGWlq5eAmLSKY7ssi=QHaU8dSM84LdwYUH

Also this vide for spur gears kzbin.info/www/bejne/oYjYo4ammruqq5Ysi=JqEnIRU6wG9OLeXj

Thanks

It does take some dexterity - thanks for watching

Thanks for watching and good luck with your rebuild.

@@EvolventDesign Just serviced the Jacobs 33 chuck, the stuck chuck now works well, after removing 80+ years of gunk, sawdust and who knows what else. Interesting fact: 2 of the 3 jaws had numbers stamped on the wide ends, exposed upon disassembly. That made matching them to the correct marked positions in the chuck body a breeze. Maybe only these older chucks have such markings on the jaws.

Thanks for watching.

Thanks for watching

Thanks for noticing and watching. This is a great teaching tool we use in our Gear School.

I am waiting for your answer. I have some formulas, please check them too.

Depends on the machine you are using.

@@EvolventDesign Hello friend, I want to make a lathe on a CNC machine. Can you help me?

@@EvolventDesign ?

If there are gears in your lathe let me know with drawings and we can help. We manufacture gears

Thanks for watching

Glad you enjoyed it!

evolventdesign.com/collections/all/products/jacobs-chuck-service-ring

Have not inspected the DP220, but it should either have a LH thread or some way to use wedges to get the chuck removed from the arbor. Thanks for watching.

@EvolventDesign it has a j2 taper, popped off w wedge,appears to be a,1/2 hole on spindle,then that thomas c wilson adapter to jacobs,I ordered a keyless for it,which matches the j2 taper,hasn't arrived yet

Number of teeth -2 instead of +2

You are correct.

Thanks for watching

Spreadsheet located here: www.patreon.com/posts/fine-pitch-using-88354219?Link&

eBay or bookfinder, or maybe your library

The calculator automatically handles the math. GearCalculators.com

And, thanks for the video!

I made the chart, the available cutters from most hob suppliers and AGMA are combined here to make the useful table.

You bet, glad you liked it

Need a little more info - send me a note [email protected]

send me a note to [email protected]

Send a note to [email protected] Would like to know more about your question to answer it properly

Glad it was helpful!

evolventdesign.com/pages/worm-hob-lead-angle-calculator This hob is for making splines. Use 24DP and measurements in inches. Without knowing more - here is what I get Inputs Diametral Pitch: 24 /in Thread Starts: 1 Diameter: 1.885 in (OD-2*Add to get PD) Outputs Hob Lead Angle: 1.26628 deg Hob Lead Angle: 1°15'58" © 2024 Evolvent Design, 25-Sep-2024 GCS0

This is a Spline Hob. The lead angle for a spline would be about 1°14'19" The lead angle for a standard gear hob would be 1°15'58" The effective diameter of the hob being the OD-2*Addendum The calculator can be found here: gearcalculators.com/calc/lead-angle-worms-hobs/ Thanks for watching

It is not listed on the grinder.

Thanks for watching and thanks for commenting. Sewing machines have a lot of moving parts. Keep them working.

Glad to know you are watching so closely, I will pay closer attention. Thanks

Glad you liked it!

You got it, I will straighten out my language.

Good eye. Yes, they should be the same thickness and can run on each other. The helical properties are on the transverse plane (90 from the teeth not the shaft).

@@EvolventDesign Is it possible to hob helical teeth, which have same thickness as straight/spur gear teeth ?

Depends alot on the application. If the gearbox shafts are fixed - NO. It there are banjos that allow for flexible center distances, like found in a lathe or other gearbox applications then YES. But this could alter performance in an unacceptable way.

I have some old reference books from Pfauter. They may have made several versions but here is what I found: Machine Constant = 24 Differential Constant = 75/4 = 18.75 This is for a Pfauter RS1 so this is likely the same as your R01. Give it a try and let me know. Good luck.

kzbin.infovXuO0fzb-YY?feature=share

@@EvolventDesign thanks for your reply. Does this constant work for helical gear?? And does this method work for old models like RS01?

Yes, should work for the index drive train to set the tooth count. If your machine has a differential gearbox it works differently. The methods to solve this require you know the constant and have access to other solvers like the ones found here: gearcalculators.com/

Good question! evolventdesign.com/pages/gear-measurement-over-pins-calculator Here is our calculator that works for both external and internal spur gears. This is how gears are measured. Count the teeth, make some measurements and this calculator can get you very close. As far as rules-of-thumb that is a future video. Thanks for watching!

Great to hear from you and thanks for watching

Glad you liked it.

You’re welcome 😊

Inputs Threads per Inch: 5.000 1/in Outputs Module: 1.617 mm Diametral Pitch: 15.708 1/in Circular Pitch: 0.200 in Threads per Inch: 5.000 1/in © 2022 Evolvent Design, 13-Feb-2023

There is more than meets the eye. A large wormdrive to give high quality tooth-tooth results, adjustment for lead angle, Double reduction gearbox for indexing the tooth count using gear ratios, full hydraulic control for smooth operation, high quality spindles and a filtered lubrication system. But regardless of the challenges I have certainly thought about it. Once you find an old machine and take it apart, the full appreciation of the complexities will sink in. Andrew