Claims
- 1. A method of manufacturing a motor shaft for a rotational-to-direct motion converting motor comprising:
a step for forming an end portion of a wire rod into a large diameter portion; a step for flattening the large diameter portion to form the large diameter portion into a plate portion having a prescribed thickness; a step for taking out a prescribed-shaped rotation stopping portion from the plate portion having the prescribed thickness; and a step for forming thread ridges on the wire rod other than the rotation stopping portion.
- 2. A method of manufacturing a motor shaft for a rotational-to-direct motion converting motor comprising:
a step for taking out a prescribed-shaped second plate material including a rotation stopping portion from a first plate material; a step for forming the second plate material other than the rotation stopping portion into a columnar portion by pressing the second plate material; and a step for forming thread ridges on the columnar portion.
- 3. A method of manufacturing a motor shaft for a rotational-to-direct motion converting motor according to claim 1, wherein the step for forming thread ridges comprises
a step for forming the thread ridges according to a form rolling.
- 4. A method of manufacturing a motor shaft for a rotational-to-direct motion converting motor according to claim 2, wherein the step for forming thread ridges comprises
a step for forming the thread ridges according to a form rolling.
- 5. A motor shaft for a rotational-to-direct motion converting motor comprising:
a rotation stopping portion formed in a plate shape; a screw portion formed in a columnar shape; and a hole, arranged in an end portion of a motor shaft in a longitudinal direction, for positioning the motor shaft in a form rolling.
Priority Claims (1)
Number |
Date |
Country |
Kind |
11-112104 |
Apr 1999 |
JP |
|
CROSS-REFERENCE TO THE RELATED APPLICATION
[0001] This application is a continuation of International Application No. PCT/JP00/02589, whose International filing date is Apr. 20, 2000, the disclosures of which Application are incorporated by reference herein.
Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/JP00/02589 |
Apr 2000 |
US |
Child |
09738321 |
Dec 2000 |
US |