Planet gear for an integrated drive generator

Patent metadata

Field	Value
Publication number	US-9759305-B2
Application number	US-201514677631-A
Country	US
Kind code	B2
Filing date	Apr 2, 2015
Priority date	Apr 2, 2015
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

Abstract

A planet gear for an integrated drive generator includes a planet gear body having an outer diametric surface provided with fifteen (15) gear teeth. The integrated drive generator can include a housing that surrounds an input system. The input system can be operatively coupled to a variable speed drive source. The integrated drive generator can also include a generator and an epicyclic differential gear system.

First claim

What is claimed is:

1. A planet gear for an integrated drive generator (IDG) comprising:
a planet gear body having an outer diametric surface provided with 15 gear teeth,
wherein the planet gear body includes a first axle and an opposing, second axle, at least one of the first and second axles including an outer diameter of between about 0.4620-inch (1.174-cm) and about 0.4625-inch (1.175-cm), and
wherein the first axle includes a first thrust surface and the second axle includes a second thrust surface, at least one of the first and second thrust surfaces including an outer diameter of between about 0.563-inch (1.430-cm) and about 0.573-inch (1.455-cm).

2. The planet gear according to claim 1 , wherein the 15 gear teeth include a root diameter of between about 0.607-inch (1.54-cm) and about 0.620-inch (1.574-cm).

3. The planet gear according to claim 1 , wherein the 15 gear teeth include a root diameter of about 0.620-inch (1.574-cm).

4. The planet gear according to claim 1 , wherein the 15 gear teeth define an outer diameter of the planet gear body of between about 0.852-inch (2.164-cm) and about 0.855-inch (2.172-cm).

5. The planet gear according to claim 1 , wherein the 15 gear teeth include a pitch diameter of about 0.750-inch (1.905-cm).

6. The plant gear according to claim 1 , wherein the first thrust surface is spaced from the second thrust surface by a distance of between about 0.789-inch (2.004-cm) and about 0.793-inch (2.014-cm).

7. The planet gear according to claim 1 , wherein the 15 gear teeth include a helix angle lead-in angle of about 0.000-inch and a base radius of about 0.3399-inch (0.8633-cm).

8. An integrated drive generator (IDG) comprising:
a housing; and
a differential gear system arranged within the housing, the differential gear system including at least one planet gear having a planet gear body including an outer diametric surface provided with 15 gear teeth,
wherein the planet gear body includes a first axle and an opposing, second axle, at least one of the first and second axles including an outer diameter of between about 0.4620-inch (1.174-cm) and about 0.4625-inch (1.175-cm), and
wherein the first axle includes a first thrust surface and the second axle includes a second thrust surface, at least one of the first and second thrust surfaces including an outer diameter of between about 0.563-inch (1.430-cm) and about 0.573-inch (1.455-cm).

9. The integrated drive generator according to claim 8 , wherein the 15 gear teeth include a root diameter of between about 0.607-inch (1.54-cm) and about 0.620-inch (1.574-cm).

10. The integrated drive generator according to claim 8 , wherein the 15 gear teeth define an outer diameter of the planet gear body of between about 0.852-inch (2.164-cm) and about 0.855-inch (2.172-cm).

11. The integrated drive generator according to claim 8 , wherein the 15 gear teeth include a helix angle lead-in angle of about 0.000-inch and a base radius of about 0.3399-inch (0.8633-cm).

Assignees

• Hamilton Sundstrand Corp

Inventors

• Lemmers Jr Glenn C
• Finke Aaron M
• Smith Doren C
• Grosskopf Andrew P
• Behling David S

Classifications

• F16H55/08 Primary

  Profiling · CPC title

• F16H55/17

  Toothed wheels (worm wheels F16H55/22; chain wheels F16H55/30) · CPC title

• F16H57/08

  of gearings with members having orbital motion · CPC title