Method of manufacturing a shaft for a pneumatic tool and shaft made by the same
AssigneeAirboss Air Tool Co., Ltd.
InventorHsin-He Chang
Life of this patent
Estimating the term…
Abstract
A method of manufacturing a shaft of a pneumatic tool has steps of casting, friction welding and processing. In the step of casting, a hollow section of a first segment and a second segment are respectively prepared. In the step of friction welding, the second segment is connected with a second end surface of the hollow section of the first segment by a friction welding process to form a work-in-process shaft. In the step of processing, an outer surface of the work-in-process shaft is processed to form a shaft. The hollow section is casted to form through holes therein. Accordingly, the weight of the shaft is reduced, the shaft becomes light and the material cost of the shaft is diminished.
Claims13
A method of manufacturing a shaft for a pneumatic tool comprising steps of:
- casting, wherein a first segment and a second segment are prepared;
- the first segment has
- an elongated and casted hollow section having a first end surface and a second end surface opposite to the first end surface;
- and
- a connecting section being a solid chunk;
- and
- the second segment is a solid chunk;
- friction welding, wherein the second segment is connected with the second end surface of the hollow section by a friction welding process to form a work-in-process shaft;
- and
- processing, wherein the work-in-process shaft is processed to form a shaft.
A shaft for a pneumatic tool comprising:
- a metallic first segment having
- an elongated hollow section having
- a first end surface;
- a second end surface opposite to the first end surface of the hollow section;
- an axis;
- at least three through holes arranged at intervals, each through hole formed through the hollow section, formed through the first end surface and the second end surface, and being parallel to the axis of the hollow section;
- and
- at least three ribs formed between the at least three through holes and arranged at intervals, wherein a number of the at least three ribs being same as that of the at least three through holes;
- and
- a connecting section being a solid chunk and integrally connected with the first end surface of the hollow section;
- and
- a metallic second segment being a solid chunk and integrally connected with the second end surface of the hollow section by a friction welding process.
Dependencies are inferred from the claim text.