- #1
wolterh
- 7
- 0
Which is the correct formula to calculate the center distance between gears? I am designing a couple of spur gears in Autodesk Inventor and the application says that the center distance between them is 23.107 mm, but when I place them so far apart they seem to overlap.
The gears have the following dimensions:
Gear #1:
Pitch diameter = 6 mm
Number of teeth = 12
Gear #2:
Pitch diameter = 40 mm
Number of teeth = 80
The module consequently is 0.5 mm
Logic says that the center distance must be distance between the centers of the gears placed close enough so their pitch diameters are tangent - so the sum of the radii would be the center distance, but a distance of 23 mm seems way too small.
The gears have the following dimensions:
Gear #1:
Pitch diameter = 6 mm
Number of teeth = 12
Gear #2:
Pitch diameter = 40 mm
Number of teeth = 80
The module consequently is 0.5 mm
Logic says that the center distance must be distance between the centers of the gears placed close enough so their pitch diameters are tangent - so the sum of the radii would be the center distance, but a distance of 23 mm seems way too small.