US3855992A - Sharpening device for grinding wheels - Google Patents

Sharpening device for grinding wheels Download PDF

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Publication number
US3855992A
US3855992A US00356471A US35647173A US3855992A US 3855992 A US3855992 A US 3855992A US 00356471 A US00356471 A US 00356471A US 35647173 A US35647173 A US 35647173A US 3855992 A US3855992 A US 3855992A
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United States
Prior art keywords
sharpening
grinding wheel
support
roller
profile
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Expired - Lifetime
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US00356471A
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English (en)
Inventor
K Nordin
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Lidkopings Mekaniska Verkstads AB
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Lidkopings Mekaniska Verkstads AB
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    • 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
    • B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
    • B24B53/06—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels
    • B24B53/062—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels using rotary dressing tools

Definitions

  • ABSTRACT A device for sharpening a grinding wheel with a profile surface consisting of two straight lines and an intermediate arcuate segment.
  • the device comprises a sharpening roller rotatably mounted in a support and having two peripheral sharpening surfaces disposed at a predetermined angle relative to one another and defining an edge at the radially outer rim of said sharpening roller and' means mounting the support for rotation through a predetermined angle between first and second limit positions about an axis disposed parallel to a tangent to the surface of the grinding wheel.
  • One of said sharpening surfaces contacts one straight line segment of the grinding wheel when the support is located in the first limit'position and the other sharpening surface contacts the other straight line segment of the grinding wheel when the support is located in said second limit position, and said rim of the sharpening roller contacts the arcuate segment of the grinding wheel when the support is rotated between the first and second limit positions.
  • FIGIG 1 SHARPENING DEVICE FOR GRINDING WHEELS BACKGROUND OF THE INVENTION
  • the invention relates to a device comprising'a rotating sharpening roller for sharpening a grindingwheel with a profile comprising two straight lines and an intermediate circular arc.
  • Such grinding wheels are used for different purposes for example grinding ball bearing rings which are provided with ball grooves.
  • In order to retain its abrasive ability such a grinding wheel has to be sharpened with predetermined intervals. It is previously known when sharpening grinding wheels with a profile according to the above to use special sharpening rollers which have a profile corresponding to the object which is to be ground by the grinding wheel.
  • Such a sharpening roller is'provided on its envelope surface with a great number of diamond points which, when the roller and-the grinding wheel are contacting each other andare rotating relatively to each other, cuts off a surface layer on the envelope surface of the grinding wheel which is thereby given the desired profile and sharpness.
  • the axis of rotation of the sharpening roller and the grinding wheel are always parallel but the distance between the axes may be altered by displacingv the sharpening roller perpendicularly to its axis of rotation. It is difficult to achieve the desired accuracy on the circular profile-part of the grinding wheel if it is sharpened with such a sharpening roller.
  • each sharpening roller is usable only for one single radius of the circular profile part of the grinding wheel which means that a great number of different sharpenin g rollers are necessary for sharpening grinding wheels with differentprofile radii. Since the sharpening rollers are comparatively expensive, this is a disadvantage.
  • sharpening the circular profile parts of the grinding wheel it is also known to use a diamond point which is pressed against the periphery of the grinding wheel and moves perpendicularly to the direction of motion of the periphery of the grinding wheel along a circular arc which corresponds to the profile of the grinding wheel whereby a surface layer of the grinding wheel is cutoff.
  • the straight profile of the grinding wheel may be sharpened with a cylindrical sharpening roller in the same way as described above in connection -to the sharpening wheel which was profiled in the same way as the workpiece.
  • a plurality of sharpening devices must be used in such case which makes the device unnecessarily expensiveflt is also possible to make the above mentioned diamond point describe a path which corresponds to the whole profile of the grinding wheel, i.e., two straight lines and an intermediate circular arc. Such a device is complicated and expensive.
  • FIG. 1 shows in principle a grinding machine provided with a sharpening device according to the invention
  • FIG. 1a is a sectional view taken on lines 1a-1a of FIG. 1;
  • FIG. 1b is a sectional view taken on lines lb-lb of FIG. 1;
  • FIGS. 2 4 show different positions of the sharpening roller in relation to the grinding wheel in one embodiment of the invention.
  • FIG. 5 shows one position of the sharpening roller in relation to the grinding wheel in another embodiment.
  • the grinding machine according to FIG. 1 comprises a grinding wheel 1 which is rotatable around an axis 2 and is intended for grinding the envelope surfaceof rings, which for the grinding procedure in a manner known per se, are fixed in a ring retainer 3.
  • the grinding wheel 1 is sharpened with a sharpening roller 4 which will be further described in connection to the FIGS. 2 4.
  • the sharpening roller is rotatably mounted in a support device 5, in which also a driving motor for the sharpening roller is provided.
  • the sharpening roller is rotating in the direction of arrow 6, and the grinding wheel is rotating in the direction of arrow 7.
  • the turning device 8 is in itself displaceable perpendicularly to the axis 9 and perpendicularly to the rotational axis of the grinding wheel 2 along a linear guide 12, as shown by arrow 13, which makes it possible to use grinding wheels with different diameters which may be sharpened by the same sharpening device, and makes it possible to move the position of the sharpening roller to compensate the wear of the grinding wheel at each sharpening operation.
  • the linear guide 12 may be provided with a dovetail projection 12b which slides in a complementary slotted opening in the frame 12a.
  • the figures 2, 3 and 4 show a section according to line A A in FIG.
  • FIGS. 2 and 4' thereby show the end position of the sharpening roller when this is turned around the axis 9. As appears from FIG. 2, the sharpening roller .4
  • FIG. 3 shows the profile of the sharpening roller which is constituted by two tapered parts 18 and 19, with a mutual base. Both of the cone angles are equal, which means that both angles a are equal.
  • the sharpening roller has to be turned the angle 90 a in each direction from the neutral position which is shown in FIG. 3.
  • the outer edge of the sharpening roller which is constituted by the section between the cones l8 and' 19, is suitably rounded by a radius R, see FIG. 3
  • the profile of the grinding wheel will have a corresponding radius 3 in the area between the straight and the circular profile parts.
  • the tapered surfaces 18 and 1 9 of the sharpening roller and the intermediate rounded surface with the-radius R are covered with a number of diamond points, which, when the roller contacts the grinding wheel, are cutting off a surface layer on the wheel.
  • the turning around the axis9 is carried out by a turning device 8 in a manner which need not be further described, whereby the turnangle 90 a at each direction is adjustable in a manner known per se.
  • the same sharpening roller may be used for sharpening grinding wheels with profiles with differentradii R by varying the position of the support on the turning device 8.'Also the length of a circular arc with the radius R-in the profile of the grinding wheel may be varied when using the same sharpening device if the sharpening roller 4 is exchangeable, whereby for a longer circular are a sharpening roller with a smaller angle a is used, which meansthat the turning angle 90 01 of the sharpening roller may be increased.
  • the FIGS. 2 4 show the sharpening of a grinding wheel with a profile comprising a convex circular arc.
  • FIG. 5 shows a'portion of a grinding wheel 20 with two straight profile parts 21 and 22 and a concave circular profile part 23.
  • the sharpening roller 24 is rotatable around an axis 25, and the sharpening roller and its support are rotatable around an axis 26.
  • the roller takes one of its end positions one of its tapered parts 27 contacts one of the straight portions 21 on the profile of the grinding wheel.
  • the other tapered portion 28 contacts the other straight part 22 of the profile of the grinding wheel.
  • a sharpening roller according to FIG. 5 may be used ina device which is designed in principle in the same manner as described in connection to FIG. 1.
  • a device for sharpening a grinding wheel with a profile surface consisting of two straight line segments and an intermediate arcuate segment comprising a sharpening roller rotatably mounted in a support and having two peripheral sharpening surfaces disposed at a predetermined angle relative to one another and defining an edge at the radially outer rim of said sharpening roller, means mounting said support for rotation through a predetermined angle between first and second limit positions about an axis disposed parallel to a tangent to the surface of the grinding wheel, one of said sharpening surfaces contacting one of the straight line segments of the grinding wheel when said support is located in said first limit position and the other of said sharpening surfaces contacting the other straight line segment of said grinding wheel when said support is located in said second limit position, and said rim of said sharpening roller contacting said arcuate segment of the grinding wheel when said support is rotated be-,
  • :for the sharpening roller is adjustable.
  • a device characterized by that the support (5) for the sharpening roller is dis placeable on a turning device (8), the displacement

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
US00356471A 1972-06-02 1973-05-02 Sharpening device for grinding wheels Expired - Lifetime US3855992A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE07239/72A SE363260B (enrdf_load_stackoverflow) 1972-06-02 1972-06-02

Publications (1)

Publication Number Publication Date
US3855992A true US3855992A (en) 1974-12-24

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ID=20270825

Family Applications (1)

Application Number Title Priority Date Filing Date
US00356471A Expired - Lifetime US3855992A (en) 1972-06-02 1973-05-02 Sharpening device for grinding wheels

Country Status (7)

Country Link
US (1) US3855992A (enrdf_load_stackoverflow)
JP (1) JPS5321553B2 (enrdf_load_stackoverflow)
DE (1) DE2327846C3 (enrdf_load_stackoverflow)
FR (1) FR2186868A5 (enrdf_load_stackoverflow)
GB (1) GB1409680A (enrdf_load_stackoverflow)
IT (1) IT985641B (enrdf_load_stackoverflow)
SE (1) SE363260B (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4374513A (en) * 1978-08-04 1983-02-22 Dieter Wiener Dressing apparatus for cup-type abrasive wheels as used for grinding spiral bevel gearwheels
US4406275A (en) * 1978-07-31 1983-09-27 Hauni-Werke Korber & Co. Kg. Apparatus for dressing and profiling grinding wheels
US4459969A (en) * 1982-01-15 1984-07-17 Edwin Russ Overhead radius dresser for grinding wheels
EP0304152A3 (en) * 1987-08-19 1990-04-25 Bryant Grinder Corporation Radius dressing apparatus
EP0286027A3 (de) * 1987-04-04 1990-05-16 Ernst Saljé Verfahren und Vorrichtung zum Abrichten von Schleifscheiben

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5637519A (en) * 1979-09-05 1981-04-11 Nissan Motor Co Ltd Electrostatic capacity type liquid volume meter
JPS5775781A (en) * 1980-10-27 1982-05-12 Okamoto Kosaku Kikai Seisakusho:Kk Rotary dresser
DE3302478A1 (de) * 1983-01-26 1984-07-26 Naxos-Union Schleifmittel- u. Schleifmaschinenfabrik, 6000 Frankfurt Vorrichtung zum abrichten einer schleifscheibe
JPS59161266A (ja) * 1983-03-02 1984-09-12 Nisshin Kikai Seisakusho:Kk 機外砥石修正機
JPS59176747U (ja) * 1983-05-10 1984-11-26 エヌ・テ−・エヌ東洋ベアリング株式会社 ドレツシング装置
JPS59176748U (ja) * 1983-05-11 1984-11-26 エヌ・テ−・エヌ東洋ベアリング株式会社 ドレツシング装置
US4945888A (en) * 1987-08-04 1990-08-07 Korber Ag Method of dressing grinding wheels
JPH04244376A (ja) * 1991-01-09 1992-09-01 Seiko Seiki Co Ltd ロータリドレッサによるドレッシング方法及びそのドレッシング装置
DE19624842C2 (de) * 1996-06-21 2000-08-10 Reishauer Ag Verfahren zum flexiblen Profilieren von Schleifschnecken, ein Profilierwerkzeug und eine Vorrichtung zur Durchführung des Verfahrens
WO2008001835A1 (fr) * 2006-06-28 2008-01-03 Thk Co., Ltd. Appareil de traitement et procédé de commande de l'appareil de traitement
JP5464427B2 (ja) * 2010-01-22 2014-04-09 豊和工業株式会社 研削工具の整形方法
JP5586409B2 (ja) * 2010-10-08 2014-09-10 Ｎｔｎ株式会社 ドレッシング装置
CN102019585B (zh) * 2010-10-09 2012-07-18 华南理工大学 基于数控对磨成型的金刚石砂轮v形尖角精密修整方法
JP6343960B2 (ja) * 2013-10-28 2018-06-20 株式会社ジェイテクト ツルーイング方法および研削盤
FR3017813B1 (fr) * 2014-02-24 2016-09-02 Dinatec Dispositif de taillage de meule pour rectifieuse

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1773386A (en) * 1925-06-01 1930-08-19 Burgess Frank Apparatus for gear grinding
FR1070546A (fr) * 1952-10-31 1954-07-28 Diamant Boart Sa Procédé de rectification des meules et dispositif pour la mise en oeuvre de ce procédé
US2957471A (en) * 1958-11-11 1960-10-25 Prec Grinding Ltd Means for trimming grinding or analogous rotary bodies used in grinding or other machines
US3273554A (en) * 1963-11-08 1966-09-20 Lothar P Bunge Radius and tangent dresser for abrasive wheels

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1773386A (en) * 1925-06-01 1930-08-19 Burgess Frank Apparatus for gear grinding
FR1070546A (fr) * 1952-10-31 1954-07-28 Diamant Boart Sa Procédé de rectification des meules et dispositif pour la mise en oeuvre de ce procédé
US2957471A (en) * 1958-11-11 1960-10-25 Prec Grinding Ltd Means for trimming grinding or analogous rotary bodies used in grinding or other machines
US3273554A (en) * 1963-11-08 1966-09-20 Lothar P Bunge Radius and tangent dresser for abrasive wheels

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4406275A (en) * 1978-07-31 1983-09-27 Hauni-Werke Korber & Co. Kg. Apparatus for dressing and profiling grinding wheels
US4374513A (en) * 1978-08-04 1983-02-22 Dieter Wiener Dressing apparatus for cup-type abrasive wheels as used for grinding spiral bevel gearwheels
US4459969A (en) * 1982-01-15 1984-07-17 Edwin Russ Overhead radius dresser for grinding wheels
EP0286027A3 (de) * 1987-04-04 1990-05-16 Ernst Saljé Verfahren und Vorrichtung zum Abrichten von Schleifscheiben
EP0304152A3 (en) * 1987-08-19 1990-04-25 Bryant Grinder Corporation Radius dressing apparatus

Also Published As

Publication number Publication date
FR2186868A5 (enrdf_load_stackoverflow) 1974-01-11
DE2327846A1 (de) 1973-12-06
SE363260B (enrdf_load_stackoverflow) 1974-01-14
GB1409680A (en) 1975-10-15
JPS5321553B2 (enrdf_load_stackoverflow) 1978-07-03
DE2327846B2 (de) 1974-08-01
DE2327846C3 (de) 1975-03-13
IT985641B (it) 1974-12-10
JPS4950589A (enrdf_load_stackoverflow) 1974-05-16

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