IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0790054
(2010-05-28)
|
등록번호 |
US-8534770
(2013-09-17)
|
발명자
/ 주소 |
- White, Jay D.
- Morris, Jeffrey S.
- Hester, Donald R.
|
출원인 / 주소 |
|
대리인 / 주소 |
Dureska, Kennedy & Moore, LLC
|
인용정보 |
피인용 횟수 :
6 인용 특허 :
19 |
초록
▼
An axle spindle and wheel end assembly includes a precision-formed axle spindle, wheel hub, and axle spindle nut. The axle spindle is formed with parallel inboard and outboard bearing surfaces, a shoulder that is perpendicular to the inboard and outboard bearing surfaces, and threads for a spindle n
An axle spindle and wheel end assembly includes a precision-formed axle spindle, wheel hub, and axle spindle nut. The axle spindle is formed with parallel inboard and outboard bearing surfaces, a shoulder that is perpendicular to the inboard and outboard bearing surfaces, and threads for a spindle nut that are aligned with the inboard and outboard bearing surfaces. The wheel hub is formed with inboard and outboard bearing surfaces that are in parallel alignment with one another, and bearing axial stop surfaces that are perpendicular to the wheel hub bearing surfaces. The spindle nut is formed with threads on its inner periphery and a flat inboard surface that is perpendicular to the threads. The axle spindle, wheel hub, and spindle nut cooperate to enable an axle spindle nut assembly to consistently provide a light preload on a bearing cone and spacer group of the wheel end assembly.
대표청구항
▼
1. A precision-formed axle spindle and wheel end assembly combination for a heavy-duty vehicle, said combination comprising: a) a precision-formed axle spindle, said spindle formed with: i) a bearing surface for an inboard bearing and a bearing surface for an outboard bearing disposed longitudinally
1. A precision-formed axle spindle and wheel end assembly combination for a heavy-duty vehicle, said combination comprising: a) a precision-formed axle spindle, said spindle formed with: i) a bearing surface for an inboard bearing and a bearing surface for an outboard bearing disposed longitudinally outboardly of said inboard bearing surface, said axle spindle inboard and outboard bearing surfaces being in parallel alignment with one another;ii) a shoulder for retaining the longitudinal position of said inboard bearing, said shoulder being perpendicular to said axle spindle inboard and outboard bearing surfaces; andiii) threads for receiving a spindle nut, said axle spindle threads being aligned with said axle spindle inboard and outboard bearing surfaces, wherein a maximum acceptable angle along a length of the threads about a projected axle spindle center is less than about 0.300 degrees; and,b) a wheel end assembly rotatably mounted on said axle spindle, said wheel end assembly including: i) said inboard bearing immovably mounted on said axle spindle at said axle spindle inboard bearing surface and said shoulder;ii) said outboard bearing immovably mounted on said axle spindle at said axle spindle outboard bearing surface;iii) a precision-formed wheel hub rotatably mounted on said inboard and outboard bearings, said wheel hub formed with: a bearing surface for said inboard bearing and a bearing surface for said outboard bearing, said wheel hub inboard and outboard bearing surfaces being in parallel alignment with one another; andan axial stop surface for retaining the longitudinal position of said inboard bearing and an axial stop surface for retaining the longitudinal position of said outboard bearing, each one of said axial stop surfaces being perpendicular to said wheel hub inboard and outboard bearing surfaces; andiv) a precision-formed spindle nut, said spindle nut formed with a flat inboard surface and threads on an inner periphery of said spindle nut, said flat inboard surface being perpendicular to a projected pitch diameter of said spindle nut threads, whereby said axle spindle, said wheel hub, and the spindle nut cooperate to enable an axle spindle nut assembly to provide a uniform, consistent light preload on a bearing cone and spacer group of said wheel end assembly when said axle spindle and wheel end assembly combination is in an assembled state. 2. The precision-formed axle spindle and wheel end assembly combination for a heavy-duty vehicle of claim 1, wherein said wheel hub bearing surfaces are in parallel alignment with one another to one-thirtieth of one degree. 3. The precision-formed axle spindle and wheel end assembly combination for a heavy-duty vehicle of claim 1, wherein said wheel hub axial stop surfaces for said inboard and outboard bearings are perpendicular to said wheel hub inboard and outboard bearing surfaces within from about 0.0001 inches to about 0.0003 inches. 4. The precision-formed axle spindle and wheel end assembly combination for a heavy-duty vehicle of claim 1, wherein a total runout of said axle spindle shoulder from said axle spindle inboard and outboard bearing surfaces is less than about 0.001 inches. 5. The precision-formed axle spindle and wheel end assembly combination for a heavy-duty vehicle of claim 1, wherein a ratio of a length of said threads formed on said axle spindle to a variance of the axle spindle threads from a projected axle spindle center is a value of about 600. 6. The precision-formed axle spindle and wheel end assembly combination for a heavy-duty vehicle of claim 1, wherein a maximum acceptable angle along a length of said threads formed on said axle spindle about a projected axle spindle center is about 0.172 degrees. 7. The precision-fanned axle spindle and wheel end assembly combination for a heavy-duty vehicle of claim 1, wherein said spindle nut is formed with: an outboard surface that includes a recess for receiving an outer washer; andradially inwardly extending teeth that engage mating radially outwardly extending teeth formed on said outer washer. 8. The precision-formed axle spindle and wheel end assembly combination for a heavy-duty vehicle of claim 7, wherein said spindle nut is formed with at least forty of said radially inwardly extending teeth. 9. The precision-formed axle spindle and wheel end assembly combination for a heavy-duty vehicle of claim 8, wherein said outer washer is foiined with at least at least three teeth for each one of said spindle nut teeth. 10. The precision-formed axle spindle and wheel end assembly combination for a heavy-duty vehicle of claim 1, wherein when a major diameter of said threads formed on said spindle nut inner periphery is between about 1.5 inches and about 5.0 inches, said spindle nut inboard surface is flat within about 0.001 inches. 11. The precision-formed axle spindle and wheel end assembly combination for a heavy-duty vehicle of claim 1, wherein said spindle nut engages less than about one-half of said threads formed on said axle spindle. 12. The precision-formed axle spindle and wheel end assembly combination for a heavy-duty vehicle of claim 1, wherein when said spindle nut includes a thread form major diameter of about 3.480 inches and a 12-pitch thread, the spindle nut further includes about 3,840 adjustment points across one inch of axial movement. 13. The precision-formed axle spindle and wheel end assembly combination for a heavy-duty vehicle of claim 1, wherein when said spindle nut includes a thread form major diameter of about 2.625 inches and a 16-pitch thread, the spindle nut further includes about 3,840 adjustment points across one inch of axial movement. 14. The precision-formed axle spindle and wheel end assembly combination for a heavy-duty vehicle of claim 1, wherein a total perpendicularity runout of said spindle nut inboard surface relative to said spindle nut threads is about 0.005 inches.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.