US3736705A - Thrust bearing arrangement for a deadshaft mounted grinder wheelhead - Google Patents

Thrust bearing arrangement for a deadshaft mounted grinder wheelhead Download PDF

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Publication number
US3736705A
US3736705A US3736705DA US3736705A US 3736705 A US3736705 A US 3736705A US 3736705D A US3736705D A US 3736705DA US 3736705 A US3736705 A US 3736705A
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US
United States
Prior art keywords
drive shaft
thrust
fixed
grinding wheel
arrangement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
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English (en)
Inventor
M Ryan
W Stremel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHEFFIELD MACHINE TOOL COMPANY A CORP OF OH
Original Assignee
Bendix Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bendix Corp filed Critical Bendix Corp
Application granted granted Critical
Publication of US3736705A publication Critical patent/US3736705A/en
Assigned to SHEFFIELD MACHINE TOOL COMPANY, A CORP. OF OH reassignment SHEFFIELD MACHINE TOOL COMPANY, A CORP. OF OH ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: BENDIX CORPORATION THE
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/04—Headstocks; Working-spindles; Features relating thereto
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
    • F16C32/0681—Construction or mounting aspects of hydrostatic bearings, for exclusively rotary movement, related to the direction of load
    • F16C32/0696—Construction or mounting aspects of hydrostatic bearings, for exclusively rotary movement, related to the direction of load for both radial and axial load

Definitions

  • the thrusting surfaces were located proximate the wheel as per the conventional practice which dictates minimizing thermal growth by placing the thrusting surfaces as close as possible to the wheel.
  • FIG. 1 is a view of a grinding wheel and mounting arrangement in longitudinal section.
  • FIG. 2 is a detailed view of a portion of the thrust bearings shown in FIG. 1.
  • the wheelhead assembly is depicted including a grinding wheel 12 mounted on a hub 14 in turn pressed onto tapered surface 16 of a hollow driving shaft 18 by means of a collar 20 so as to provide a firm driving connection therebetween.
  • Hollow drive shaft 18 has a drive pulley 22 fixed to its other end by means of a retainer 24 so as to provide a driving engagement with a belt drive (not shown) to rotate the grinding wheel 12 during grinding operations.
  • a bull gear 26 is also fixed to the hollow shaft 18 to provide a driving surface for a slow speed drive (not shown) to rotate the grinding wheel 12 during crush dressing operations.
  • the hollow shaft 18 is supported radially by means of a fixed central shaft 28, supported at one end on door structure 30 and tapered cap 32, bolted to both elements, and at the other end by housing structure 34 bolted thereto.
  • the hollow shaft 18 is supported on the fixed central shaft 28 by means of a hydrostatic bearing arrangement including a pair of series of circumferentially spaced pockets 36 formed in the fixed central shaft 28 and supplied with a fluid from a source (not shown) via central passage 38, radial passage 40, and orifices 42. Fluid passing out of the pockets 36 past the clearances between the fixed central shaft 28 and the hollow drive shaft 18 is collected in annular spaces 44, 46, and 48 and passes into return passages 50, 52, and 54 to be returned to the sump (not shown) via passage 55. The fluid contained in these pockets provides a low friction support for rotating of the wheelhead assembly 10 thereon as is well known in the art.
  • the hollow drive shaft 18 is positioned against axial loads by means of a separate thrust bearing arrangement 56 according to the present invention.
  • This arrangement includes a thrust ring member 58 fixed to housing structure 60 so as to be securely supported against lateral loads.
  • the thrust ring 58 includes an annular portion 62 (FIG. 2) disposed extending around the exterior of hollow drive shaft 18 between a pair of thrust surfaces 64, 66 of the wheelhead assembly 10 formed by shoulders 68, 70 on the hollow drive shaft 18 and hub 22, respectively.
  • a series of circumferentially spaced pockets 72 are formed in the annular portion 62 facing the thrust sur' faces 64, 66 and are supplied with fluid via radial passage 74 and a series of axial passages 76 containing metering orifices 78. Flow past clearances between the annular portion 62 and other thrust surfaces 64, 66 is collected in annular spaces 80, 82 and 84 in turn collected in passage 55 for return to the sump (not shown).
  • the fixed thrust absorbing structure itself i.e., the thrust ring 58, is of relatively narrow dimension so that thermal expansion thereof also is minimal.
  • the thrust bearing arrangement 56 is remotely located with respect to the radial bearings so that the effect of heat buildup therein on the thrust bearing arrangement is minimized.
  • a grinding wheel mounting arrangement comprismg:
  • a mounting arrangement for a member to be rotated comprising:
  • bearing means rotationally supporting said drive shaft on said fixed central shaft
  • thrust bearing means including a fixed thrust member disposed around the exterior of said drive shaft adjacent said member and cooperating with thrust surfaces on said drive shaft to restrain axial movement thereof.
  • said thrust member includes an annular portion extending radially between a pair of shoulders fixed to said drive shaft.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
US3736705D 1971-06-24 1971-06-24 Thrust bearing arrangement for a deadshaft mounted grinder wheelhead Expired - Lifetime US3736705A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15627771A 1971-06-24 1971-06-24

Publications (1)

Publication Number Publication Date
US3736705A true US3736705A (en) 1973-06-05

Family

ID=22558881

Family Applications (1)

Application Number Title Priority Date Filing Date
US3736705D Expired - Lifetime US3736705A (en) 1971-06-24 1971-06-24 Thrust bearing arrangement for a deadshaft mounted grinder wheelhead

Country Status (5)

Country Link
US (1) US3736705A (it)
CA (1) CA969762A (it)
DE (1) DE2229235A1 (it)
GB (1) GB1330080A (it)
IT (1) IT956812B (it)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4763448A (en) * 1987-05-11 1988-08-16 Junichi Yoshioka Centerless grinding machine
US4811525A (en) * 1988-02-24 1989-03-14 Citizen Watch Co., Ltd. Grinding head for a grinding machine
CN104956126A (zh) * 2013-01-30 2015-09-30 米巴滑动轴承有限公司 风力设备传动机构
US9683602B2 (en) 2013-01-30 2017-06-20 Miba Gleitlager Austria Gmbh Slide bearing set
US9784245B2 (en) 2013-01-30 2017-10-10 Miba Gleitlager Austria Gmbh Wind turbine gearbox
US10125817B2 (en) * 2015-01-26 2018-11-13 Schaeffler Technologies AG & Co. KG Plain bearing arrangement for a shaft loaded with a circumferential radial force

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4730596A (en) * 1986-10-06 1988-03-15 Cincinnati Milacron Inc. Roll-type dressing unit
CN111451906B (zh) * 2020-04-22 2022-04-05 深圳市裕展精密科技有限公司 打磨头、打磨装置及打磨设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB639293A (en) * 1948-02-16 1950-06-28 Henry George Yates Combined journal and thrust bearings
US2735240A (en) * 1956-02-21 Grinding wheel mounting
GB955510A (en) * 1961-05-16 1964-04-15 Cav Ltd Shaft bearings
US3247621A (en) * 1963-12-05 1966-04-26 Sheffield Corp Machine assembly
US3301613A (en) * 1963-07-12 1967-01-31 Chrysler Corp Damped resilient bearing mounting

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735240A (en) * 1956-02-21 Grinding wheel mounting
GB639293A (en) * 1948-02-16 1950-06-28 Henry George Yates Combined journal and thrust bearings
GB955510A (en) * 1961-05-16 1964-04-15 Cav Ltd Shaft bearings
US3301613A (en) * 1963-07-12 1967-01-31 Chrysler Corp Damped resilient bearing mounting
US3247621A (en) * 1963-12-05 1966-04-26 Sheffield Corp Machine assembly

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4763448A (en) * 1987-05-11 1988-08-16 Junichi Yoshioka Centerless grinding machine
US4811525A (en) * 1988-02-24 1989-03-14 Citizen Watch Co., Ltd. Grinding head for a grinding machine
CN104956126A (zh) * 2013-01-30 2015-09-30 米巴滑动轴承有限公司 风力设备传动机构
US9683602B2 (en) 2013-01-30 2017-06-20 Miba Gleitlager Austria Gmbh Slide bearing set
US9784245B2 (en) 2013-01-30 2017-10-10 Miba Gleitlager Austria Gmbh Wind turbine gearbox
US10294926B2 (en) 2013-01-30 2019-05-21 Miba Gleitlager Austria Gmbh Wind power plant gear mechanism
US10125817B2 (en) * 2015-01-26 2018-11-13 Schaeffler Technologies AG & Co. KG Plain bearing arrangement for a shaft loaded with a circumferential radial force

Also Published As

Publication number Publication date
IT956812B (it) 1973-10-10
DE2229235A1 (de) 1973-01-11
GB1330080A (en) 1973-09-12
CA969762A (en) 1975-06-24

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Legal Events

Date Code Title Description
AS Assignment

Owner name: SHEFFIELD MACHINE TOOL COMPANY, 3913 WILLOW CREEK

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:BENDIX CORPORATION THE;REEL/FRAME:004037/0979

Effective date: 19820730