Motor housing made of titanium

1. A motor housing manufactured by using metal titanium, wherein the motor housing is calendar formed by stamping process by using titanium, the motor housing is of a barrel structure, a barrel wall and bottom are integrally stamped and formed, the other end of the barrel is provided with a barrel cover, a rim of the barrel cover is embedded into a stepped groove on an inside of the barrel wall, and the barrel bottom and the barrel cover form a symmetrical structure, wherein the motor housing is a thin-walled housing structure and the barrel wall is a circular bushing, wherein the barrel bottom and barrel cover are respectively provided with two sections of outward protruding concentric bosses, the barrel bottom and barrel cover are also respectively provided with shaft holes, and fillet connection is provided between the concentric bosses as well as between the concentric boss and the barrel wall, wherein a pair of center symmetrical electrode lead-out holes is provided at the barrel bottom or barrel cover, wherein a through window is provided in the barrel wall near the electrode lead-out hole, wherein the barrel cover is connected with the barrel wall through a welded or riveted structure, and wherein the ratio of length to diameter of the motor housing is 1.2 to 1.8:1.

2. The motor housing made of titanium as defined in claim 1 , wherein a lubricant coating is provided on an inner and outer surface of the barrel wall, the barrel bottom and the barrel cover of the motor housing before stamping.

3. The motor housing made of titanium as defined in claim 1 , wherein the wall thickness of the motor housing is 0.8 to 1.2 mm.

4. The motor housing made of titanium as defined in claim 3 , wherein brushless DC motor is installed in the motor housing, a motor shaft of which extends out of the center hole of the barrel bottom and/or barrel cover.

5. A motor housing manufactured by using metal titanium, wherein the motor housing is calendar formed by stamping process by using titanium, the motor housing is of a barrel structure, a barrel wall and bottom are integrally stamped and formed, the other end of the barrel is provided with a barrel cover, a rim of the barrel cover is embedded into a stepped groove on an inside of the barrel wall, and the barrel bottom and the barrel cover form a symmetrical structure, wherein the wall thickness of the motor housing is 0.8 to 1.2 mm, and wherein brushless DC motor is installed in the motor housing, a motor shaft of which extends out of the center hole of the barrel bottom and/or barrel cover, wherein the motor housing is a thin-walled housing structure and the barrel wall is a circular bushing, wherein the barrel bottom and barrel cover are respectively provided with two sections of outward protruding concentric bosses, the barrel bottom and barrel cover are also respectively provided with shaft holes, and fillet connection is provided between the concentric bosses as well as between the concentric boss and the barrel wall, wherein a pair of center symmetrical electrode lead-out holes is provided at the barrel bottom or barrel cover, wherein a through window is provided in the barrel wall near the electrode lead-out hole, wherein the barrel cover is connected with the barrel wall through a welded or riveted structure, and wherein the ratio of length to diameter of the motor housing is 1.2 to 1.8:1.