Gear Geometry
For the case Gleason Spiral Metric System, the tooth geometry is being defined by eight independent parameters:
|
1 |
Outer transverse module |
met |
|
2 |
Number of teeth of pinion |
z1 |
|
3 |
Number of teeth of gear |
z2 |
|
4 |
Face width gear |
b2 |
|
5 |
Mean spiral angle gear |
βm2 |
|
6 |
Pinion profile shift coefficient |
xh1 |
|
7 |
Pinion thickness modification coefficient |
xs1 |
|
8 |
Shaft angle |
Σ |
Input is done with following dialog box:
Input of gear outer pitch diameter de2 is also requested but as a dependent parameter
de2 = met z2. Common practice is to round this quantity while the spiral angle is
slightly adapted. In the Gleason Metric System, the tooth form is modified by profile height shift and thickness modification coefficients
for number of teeth less than 17, while in the Inch System the tooth proportions are determined width expressions from which
the factors are derived from a table.
Input of spiral hand, selection of uniform bottom clearance and back and front plane of teeth.
Input of face mill cutter radius rc0 with a dialog box for management of face mill tools. A list of standard Gleason tools is supplied
with the program. Input of distances from apex point with next dialog:
Results of calculation in next window:
With a mouse click, the results of the calculation can be exported in a text- or a html file. The html file
can be viewed by a browser. Click here to open a Calculation Report Geometry in
a blank page.
Go to the next web page for gear forces.