Claims
- 1. A method of manufacturing a friction member used for a vibration wave driving apparatus, comprising the steps of:compression molding a plastic powder and fiber material to form a cylindrical molded member such that the fiber material is aligned substantially perpendicular to a direction of compressing; sintering the cylindrical molded member; and cutting an outer peripheral surface of the sintered cylindrical molded member by relatively rotating the sintered cylindrical molded member.
- 2. A method according to claim 1, wherein the fiber material has a specific gravity of not less than 80% of a theoretical specific gravity of the friction member.
- 3. A method according to claim 1, wherein the fiber material is carbon fiber having a length of 50 to 350 μm.
- 4. A method according to claim 1, further comprising the steps of:cutting the sintered member to form a sheet; and pressing the sheet into a predetermined shape using a press form.
- 5. A method according to claim 4, wherein the sintered member is cylindrical or columnar.
- 6. A method according to claim 1, wherein the plastic powder is a fluoroplastic powder.
- 7. A method of manufacturing a friction member used for a vibration wave driving apparatus including a vibration member, a contact member which is brought into frictional contact with the vibration member and relatively moved by vibrations produced in the vibration member, the friction member being formed on one of respective friction portions of the vibration member and the contact member, the method comprising the steps of:compression molding a plastic powder and fiber material to form a cylindrical molded member such that the fiber material is aligned substantially perpendicular to a direction of compressing; sintering the cylindrical molded member; and cutting an outer peripheral surface of the sintered cylindrical molded member by relatively rotating the sintered cylindrical molded member.
- 8. A method according to claim 7, wherein the fiber material has a specific gravity of not less than 80% of a theoretical specific gravity of the friction member.
- 9. A method according to claim 7, wherein the fiber material is carbon fiber having a length of 50 to 350 μm.
- 10. A method according to claim 7, further comprising the steps of:cutting the sintered member to form a sheet; and pressing the sheet into a predetermined shape using a press form.
- 11. A method according to claim 10, wherein the sintered member is cylindrical or columnar.
- 12. A method according to claim 7, wherein the plastic powder is a fluoroplastic powder.
Priority Claims (2)
Number |
Date |
Country |
Kind |
10-349560 |
Dec 1998 |
JP |
|
10-349561 |
Dec 1998 |
JP |
|
Parent Case Info
This is a continuation application of U.S. patent application Ser. No. 09/456,291, filed Dec. 8, 1999, now U.S. Pat. No. 6,643,906.
US Referenced Citations (17)
Foreign Referenced Citations (3)
Number |
Date |
Country |
57-148559 |
Sep 1982 |
JP |
01-129781 |
May 1989 |
JP |
01-206880 |
Aug 1989 |
JP |
Continuations (1)
|
Number |
Date |
Country |
Parent |
09/456291 |
Dec 1999 |
US |
Child |
10/643998 |
|
US |