Invention Grant
US4819472A Method of wheel manufacture for correcting rotational non-uniformity of
a pneumatic tire and wheel assembly
失效
用于校正充气轮胎和车轮组件的旋转不均匀性的车轮制造方法
- Patent Title: Method of wheel manufacture for correcting rotational non-uniformity of a pneumatic tire and wheel assembly
- Patent Title (中): 用于校正充气轮胎和车轮组件的旋转不均匀性的车轮制造方法
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Application No.: US132269Application Date: 1987-12-14
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Publication No.: US4819472APublication Date: 1989-04-11
- Inventor: Anwar R. Daudi
- Applicant: Anwar R. Daudi
- Applicant Address: MI Lansing
- Assignee: Motor Wheel Corporation
- Current Assignee: Motor Wheel Corporation
- Current Assignee Address: MI Lansing
- Main IPC: B21D53/26
- IPC: B21D53/26
Abstract:
A method and apparatus (50 or 110) for forming bolt and center-pilot mounting openings (36, 30) in vehicle wheels (16 or 112), particularly styled-disc vehicle wheels. A preformed rim and disc assembly is engaged and fixtured around the rim bead seat (20, 22) with the inboard disc face resting on a lower die assembly (82) and without plastic deformation to the rim or disc. An upper die assembly (52) having an array of bolt hole punches (56) is moved into piercing-and-coining engagement with the disc to form the bolt openings. Continued motion of the upper die assembly pushes the disc and lower die assembly into shearing engagement with a center punch (76or 76a or 76b) which forms the center-pilot opening. The axes (BH, CH, BS) of the bolt openings and/or center-pilot opening and/or bead seats may be aligned or offset from each other.
Public/Granted literature
- US5970775A Method and apparatus for forming cup-shaped container bodies Public/Granted day:1999-10-26
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