Speed reducer casing, speed reducer, and method of manufacturing speed reducer casing
AssigneeNabtesco Corporation
InventorKazuyoshi MAKISUMI
Life of this patent
Estimating the term…
Abstract
A speed reducer casing of the present invention has inner teeth on an inner periphery thereof. The speed reducer casing includes an inner tooth portion and a casing body portion, the inner tooth portion including the inner teeth, the casing body portion supporting the inner tooth portion. The inner tooth portion is formed of a material having a higher slidability than the casing body portion. The casing body portion is formed of a material having a higher hardness than the inner tooth portion.
Claims6
A speed reducer casing having inner teeth on an inner periphery thereof, the speed reducer casing comprising:
- an inner tooth portion including the inner teeth;
- and
- a casing body portion supporting the inner tooth portion,
- wherein the inner tooth portion is formed of a material having a higher slidability than the casing body portion, and
- wherein the casing body portion is formed of a material having a higher hardness than the inner tooth portion.
A method of manufacturing a speed reducer casing having inner teeth on an inner periphery thereof, the speed reducer casing including an inner tooth portion and a casing body portion, the inner tooth portion including the inner teeth, the casing body portion supporting the inner tooth portion, the inner tooth portion being formed of a material having a higher slidability than the casing body portion, the casing body portion being formed of a material having a higher hardness than the inner tooth portion, the method comprising:
- forming the casing body portion first;
- and
- setting the casing body portion in a mold and forming the inner tooth portion by injection molding.
Dependencies are inferred from the claim text.