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Free Gearcutting Program By Lance Weston

Nels

Founder
Staff member
H-M Supporter-Premium
#1
https://www.dropbox.com/s/a5i33b0pjiwdrtq/Gear Spreadsheet 20160916.xls?dl=0

Number of Teeth
A1
100 upload_2016-12-6_20-2-47.png
Diametrical Pitch (DP) 20
Pressure Angle 14.5
Outside Diameter (OD) 5.10000
cut depth <= 20 DP 0.12400
cut depth > 20 DP 0.11570
Base Diameter (Db) 4.84074
Pitch Diameter (PD) 5.00000
Addendum (a) 0.05000
Dedendum <= 20 DP (d) 0.06200
Dedendum > 20 DP (d) 0.05785
Tooth thickness at Pitch Diameter (t) 0.07854
Circular Pitch (p) 0.15708
Whole Depth <= 20 DP (hw) 0.11200
Whole Depth > 20 DP (hw) 0.10785
Root Diameter <= 20 DP 4.87600
Root Diameter > 20 DP 4.88430
Clearance <= 20 DP 0.01200
Clearance > 20 DP 0.00785
 

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Last edited:

Uglydog

Active User
H-M Supporter-Premium
#2
Thank you Nels.
I'll likely continue to first very slowly work through the math. Very slowly.
After I think I've got it. Then I check your program and learn if I've got it right!

Thank you,
Daryl
MN