US3882646A - Grinding wheel assembly having multiple grinding surfaces for selective engagement with a workpiece - Google Patents

Grinding wheel assembly having multiple grinding surfaces for selective engagement with a workpiece Download PDF

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Publication number
US3882646A
US3882646A US448782A US44878274A US3882646A US 3882646 A US3882646 A US 3882646A US 448782 A US448782 A US 448782A US 44878274 A US44878274 A US 44878274A US 3882646 A US3882646 A US 3882646A
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United States
Prior art keywords
series
grinding
workpiece
grinding surfaces
cup
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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
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US448782A
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English (en)
Inventor
Gene A Stritzel
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Gleason Works
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Gleason Works
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Filing date
Publication date
Application filed by Gleason Works filed Critical Gleason Works
Priority to US448782A priority Critical patent/US3882646A/en
Priority to GB306275A priority patent/GB1445313A/en
Priority to DE19752506194 priority patent/DE2506194A1/de
Priority to FR7506905A priority patent/FR2263070A1/fr
Application granted granted Critical
Publication of US3882646A publication Critical patent/US3882646A/en
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23F—MAKING GEARS OR TOOTHED RACKS
    • B23F21/00—Tools specially adapted for use in machines for manufacturing gear teeth
    • B23F21/02—Grinding discs; Grinding worms
    • B23F21/023—Face-mill-type, i.e. cup-shaped, grinding wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/14—Zonally-graded wheels; Composite wheels comprising different abrasives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/18—Wheels of special form

Definitions

  • the present invention is directed to an improved grinding wheel assembly which offers the advantage of dual grinding characteristics in a single grinding wheel structure.
  • By incorporating two separate grinding characteristics into a single assembly it is possible to carry out rough and finish grinding of ceramic members with a single setup of the workpiece relative to a single grinding head assembly. This saves considerable time in the overall grinding operation and eliminates a problem of re-setting a workpiece relative to a new grinding wheel after an initial grinding operation has been performed.
  • the principles of the present invention also can be applied to other types of grinding requirements where different portions of a tooth profile are formed with different grinding wheel configurations which typically require two or more grinding setups to complete.
  • a wheel assembly may include more than two series of grinding surfaces, if desired, and the separate series of grinding surfaces can be arranged to contact and form different portions of a given tooth profile in a workpiece.
  • separate series of grinding surfaces may be provided on other types of grinding wheel configurations.
  • a grinding wheel assembly is provided with two or more series of grinding surfaces which can be selectively engaged with a workpiece for imparting selected finish or shape characteristics to the workpiece.
  • a preferred assembly of a grinding wheel for grinding ceramic face coupling member includes a cup-shaped grinding wheel configuration having first and second series of spaced grinding surfaces arranged around a rim portion of the cup-shaped wheel. The first and second series of spaced grinding surfaces are alternated in their positions about the periphery of the grinding wheel, and actuating means are provided for selectively advancing and retracting one of the series of grinding surfaces relative to the other so as to present one or the other of the grinding surfaces to a workpiece.
  • One of the series of grinding surfaces is designed for roughing out large quantities of material from a ceramic workpiece and may comprise a series of coarse grit, diamond plated segments which can be advanced and retracted relative to a main body portion of the grinding wheel assembly.
  • the second series of grinding surfaces can comprise known silicon carbide, aluminum oxide, or fine grit diamond plated segments which can be brought into engagement with a workpiece for finishing the previously ground surfaces of the workpiece.
  • FIG. 1 is an elevational view in cross-section of a cupshaped grinding wheel assembly manufactured in accordance with the present invention.
  • FIG. 2 is-a plan view, partly in section, of a portion of the grinding wheel assembly of FIG. 1, as seen on line 2-2 of FIG. 1.
  • FIG. 1 illustrates a cup-shaped grinding wheel assembly designed for use in grinding tooth slots in face coupling members of the type described, for example, in US. Pat. No. 2,401,446.
  • the cup-shaped grinding wheel assembly is illustrated in a typical mounted position on a wheel spindle 10 of a standard grinding machine designed for grinding such face coupling members.
  • the illustrated assembly includes a first cup-shaped member 12 having a first series of equally spaced grinding surfaces 14 formed on axially projecting rim portions thereof.
  • a second cup-shaped member 16, or its equivalent, is fitted within the first cup-shaped member 12, and the second cup-member 16 carries a second series of grinding surfaces 18 which are arranged to be received between the positions of the first series of grinding surfaces 14.
  • the second cup-shaped member 16 includes and an nular chamber means 20 for receiving an annular piston means 22 which is fitted and sealed within the annular chamber means.
  • a conduit 24 communicates with the annular chamber means 20 to deliver hydrau lic fluid toand from the annular chamber means for advancing and retracting the annular piston means 22 therein.
  • This provides an actuating means for advancing and retracting the second series of grinding surfaces 18 into and out of grinding positions relative to the positions of the first series of grinding surfaces 14.
  • the second series of grinding surfaces 18 can comprise, for example, a relatively coarse grinding material which can be brought into engagement with a workpiece for roughing out tooth profiles on the workpiece while the first series of grinding surfaces 14 are out of engagement with the workpiece.
  • the second series of grinding surfaces 18 can be withdrawn to the relative position shown in FIG. 1, and the first series of grinding surfaces 14 can be brought into engagement with the same workpiece to complete and finish the grinding operation.
  • the first cup-shaped member 12 which constitutes a major body portion of the grinding wheel assembly, carries the finishing grinding surfaces 14 so that a very rigid and precise relationship can be maintained between the finishing grinding surfaces and the workpiece.
  • FIG. 1 Considering further details of the assembly shown in FIG. 1, it can be seen that the entire assembly is held in place on a terminal end portion 30 of the wheel spindle by a mounting block 32 which is retained in place by a lock nut 34.
  • the first'cup-shaped member 12 is retained in place relative to the mounting block 32 with a spacer ring 36 and a lock nut 38 threaded to a threaded portion of the mounting block 32.
  • the second cup-shaped member 16 is fitted within the first cup-shaped member 12 and secured thereto with screw members 40.
  • a ring plate 42 is secured by screw members 43 to a portion of the second cup-shaped member 16 so as to partially close off the annular chamber means 20. This provides a stop limit against which the annular piston means 22 can move (downwardly, in the FIG.
  • the annular piston means 22 includes a threaded surface on a depending portion 44 so as to receive an annular sleeve means 46 carrying the second series of grinding surfaces 18.
  • a bearing sleeve 48 is provided between the sleeve means 46 and a downwardly depending portion of the second cup-shaped member 16 to reduce friction between the two members during axial movement of the sleeve member 46 relative to the cup-shaped member 16.
  • One or more driving pins 50 can be fitted in the annular sleeve 46 for being receivedin elongate slots i of the first cup-shaped member 12 to provide a positive driving engagement between the first and second series of grinding surfaces.
  • the second cup-shaped member 16 can beretracted f to the withdrawn position shown in FIG. 1 by use of hy draulic pressure, if desired, but in the illustrated em- I bodiment, a number of separate spring elements 54 (see also FIG. 2) are provided between radial extended portions of the ring plate 42 and a lower surface of the annular piston means 22. The depending portion 44 of the annular piston means 22 is cut away at those loca;
  • An example of a grinding wheel assembly in accordance with the present invention would provide for a cup-shaped grinding wheel having a point diameter would be about 2 inches in length. However, this length may vary, and 10 to 15 separate grinding surfaces can be provided about the periphery of a given grinding wheel assembly.
  • the grinding surfaces 18 would comprise a layer of relatively course diamond particles (62-120 grit) bonded tora steel body; These surfaces would then function as a roughing grinding wheel for initial shaping and finishing of a workpiece.
  • the grind ing surfaces 14 would comprise silicon carbide or aluminum oxide materials, or they could consist of a layer of relatively fine diamond particles (600 grit. or'finer) bonded on a steel backing. These surfaces would function as a finishing grinding wheel for final shaping and I i finishing of a workpiece, and known dressing devices may be provided for the grinding surfaces 14 for coir trolling the development of the. workpiece surfaces.
  • the grinding wheel assembly can be constructed and assembled from components which are somewhat different from those illustrated and discussed.
  • the grinding surfaces 18 may be carried on separate segments which are individually attached to an annular sleeve 46 or to a portion 44 of a piston assembly. Actuation ofan inner grinding.
  • wheel relative to an outer grinding wheel may be car-. I ried out by. fully equivalent structures to those which 7 have been described and discussed above.
  • a cup-shaped grinding wheel assembly for grind-- ing tooth slots into face coupling members comprising a first cup-shaped member having a first series of spaced grinding surfaces formed on aprojecting f rim portion therof, a second cup-shaped member having a second series of grinding surfaces arranged in positions between J the positions of said first series of grinding surfaces,
  • said second cup-shaped member being fitted within said first cup-shaped member for carryingsaid second series of grinding surfaces'for axial movement relative to the first cup-shaped member
  • series of grinding surfaces can be brought into engagement with a workpiece while the first series of grinding surfaces are out of engagement with the workpiece. and then the first series of grinding surfaces can be brought into engagement with workpiece while the second series of grinding surfaces are out of engagement with the workpiece.
  • said second cupshaped member includes an annular piston means which is fitted into an annular chamber means carried by said first cup-shaped member, and wherein said actuating means includes hydraulic means for moving the annular piston means within the annular chamber means.
  • said first cupshaped member includes a cup-shaped body portion having equally spaced rim portions projecting axially outwardly therefrom.
  • said second cupshaped member includes an annular body portion having equally spaced rim portions projecting radially outwardly therefrom at a sufficient angle to be received between the spaced rim portions of said first cupshaped member so as to form a substantially continuous rim structure carrying said first and second series of grinding surfaces.
  • a grinding wheel assembly having multiple grinding surfaces which can be selectively engaged with a workpiece for imparting selected finish or shape characteristics to the workpiece, comprising a first series of spaced grinding surfaces for being engaged with a workpiece to form a first finish or shape in the workpiece, said first series of grinding surfaces being carried on rim structures defined by a first support member,
  • a second series of spaced grinding surfaces carried in alternating spaces defined between said first series of grinding surfaces for being engaged with a workpiece to form a second finish or shape in the workpiece, said second series of grinding surfaces being carried on rim structures defined by a second support member, said first and second series of grinding surfaces being arranged on a common axis of rotation in the general configuration of a cupshaped grinding wheel, and
  • actuating means for selectively advancing and retracting one of said series of grinding surfaces relative to the other of said series of grinding surfaces so as to present one or the other of said series of grinding surfaces to a workpiece.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
US448782A 1974-03-06 1974-03-06 Grinding wheel assembly having multiple grinding surfaces for selective engagement with a workpiece Expired - Lifetime US3882646A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US448782A US3882646A (en) 1974-03-06 1974-03-06 Grinding wheel assembly having multiple grinding surfaces for selective engagement with a workpiece
GB306275A GB1445313A (fr) 1974-03-06 1975-01-23
DE19752506194 DE2506194A1 (de) 1974-03-06 1975-02-14 Topffoermige schleifscheibe mit mehreren, wahlweise zur anlage am werkstueck zu bringenden schleifflaechen
FR7506905A FR2263070A1 (fr) 1974-03-06 1975-03-05

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US448782A US3882646A (en) 1974-03-06 1974-03-06 Grinding wheel assembly having multiple grinding surfaces for selective engagement with a workpiece

Publications (1)

Publication Number Publication Date
US3882646A true US3882646A (en) 1975-05-13

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US448782A Expired - Lifetime US3882646A (en) 1974-03-06 1974-03-06 Grinding wheel assembly having multiple grinding surfaces for selective engagement with a workpiece

Country Status (4)

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US (1) US3882646A (fr)
DE (1) DE2506194A1 (fr)
FR (1) FR2263070A1 (fr)
GB (1) GB1445313A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4179850A (en) * 1978-04-19 1979-12-25 Brammall, Inc. Reaction honing tool for honing a flat surface
CH674330A5 (fr) * 1988-02-16 1990-05-31 Ewag Ag Masch Werkzeug
US5951378A (en) * 1997-08-07 1999-09-14 Norton Company Method for grinding bimetallic components
CN104972410A (zh) * 2014-04-11 2015-10-14 罗伯特·博世有限公司 磨盘
US20210078090A1 (en) * 2019-09-13 2021-03-18 Klingelnberg Gmbh Method for grinding a bevel gear

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2721164C3 (de) * 1977-05-11 1981-10-29 Dieter Dr.-Ing. 7505 Ettlingen Wiener Topfschleifscheibe zum Schleifen von spiral- bzw. bogenverzahnten Kegelrädern
FR2573685B1 (fr) * 1984-11-28 1987-01-23 Flachglas Ag Perceuse, en particulier machine a percer le verre
DE3738083C2 (de) * 1987-11-10 1995-12-07 Roll Gmbh Rotierendes Schaberwerkzeug zum Bearbeiten von Oberflächen
RU2596534C2 (ru) * 2014-10-28 2016-09-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ульяновский государственный технический университет" Сборный торцовый абразивный круг

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1886836A (en) * 1932-03-31 1932-11-08 Moline Tool Company Lapping machine
US2600815A (en) * 1949-04-20 1952-06-17 Eastman Kodak Co Apparatus for rough and fine grinding of spherical surfaces
US2749684A (en) * 1950-03-18 1956-06-12 Joh Urbanek & Co Combined grinding and lapping disc having flat working surfaces
US3727352A (en) * 1971-05-17 1973-04-17 C Palazzi Honing head

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1886836A (en) * 1932-03-31 1932-11-08 Moline Tool Company Lapping machine
US2600815A (en) * 1949-04-20 1952-06-17 Eastman Kodak Co Apparatus for rough and fine grinding of spherical surfaces
US2749684A (en) * 1950-03-18 1956-06-12 Joh Urbanek & Co Combined grinding and lapping disc having flat working surfaces
US3727352A (en) * 1971-05-17 1973-04-17 C Palazzi Honing head

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4179850A (en) * 1978-04-19 1979-12-25 Brammall, Inc. Reaction honing tool for honing a flat surface
CH674330A5 (fr) * 1988-02-16 1990-05-31 Ewag Ag Masch Werkzeug
US5951378A (en) * 1997-08-07 1999-09-14 Norton Company Method for grinding bimetallic components
CN104972410A (zh) * 2014-04-11 2015-10-14 罗伯特·博世有限公司 磨盘
US20210078090A1 (en) * 2019-09-13 2021-03-18 Klingelnberg Gmbh Method for grinding a bevel gear

Also Published As

Publication number Publication date
GB1445313A (fr) 1976-08-11
FR2263070A1 (fr) 1975-10-03
DE2506194A1 (de) 1975-09-11

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