US3606710A - Grinding wheel and lubricant arrangement - Google Patents

Grinding wheel and lubricant arrangement Download PDF

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Publication number
US3606710A
US3606710A US37401A US3606710DA US3606710A US 3606710 A US3606710 A US 3606710A US 37401 A US37401 A US 37401A US 3606710D A US3606710D A US 3606710DA US 3606710 A US3606710 A US 3606710A
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United States
Prior art keywords
grinding
grinding wheel
wheel
wedge
lubricating
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Expired - Lifetime
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US37401A
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English (en)
Inventor
Henri Juillerat
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Individual
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Individual
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    • 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
    • B24D7/10—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 with cooling provisions
    • 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
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/10—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with cooling provisions, e.g. with radial slots

Definitions

  • a grinding wheel assembly is provided with a plurality of individual lubricating chambers which supply a fluid lubricant to the grinding surface of a grinding disc during a grinding operation.
  • the lubricating chambers are formed by a plurality of wedge-shaped ribs on a support plate cooperating with a plurality of wedge-shaped projections on a grinding plate and during rotation of the grinding wheel, the fluid lubricant is centrifuged to the grinding surface through holes in the grinding disc in fluid communication with the lubricating chambers.
  • the present invention has for its objective to eliminate the above-mentioned disadvantages thereby ensuring a better performance and a longer service life for the grinding wheel.
  • the grinding wheel of the present invention comprises an annular abrasive surface surrounding a central, hollow portion, and characterized by the fact that the surface has openings therein communicating with lubricating chambers provided in the body of the grinding wheel.
  • the lubricating chambers communicate with the central hollow portion of the grinding wheel by lateral openings made in the vertical walls in such a way as to permit pressurized lubrication of the abrasive surface by centrifuging the lubricating oil deposited in the hollow portion through the chambers and the openings of the abrasive surface during the rotation of the grinding wheel.
  • FIG. 1 shows a cross-sectional view, partially exploded, of a diamond grinding wheel.
  • FIG. 2 shows a plan view of the base flange of the wheel.
  • FIG. 3 shows a plan view of the intermediate flange of the wheel.
  • FIG. 4 shows a plan view of the diamond crown of the grinding wheel.
  • the grinding wheel of the present invention comprises a wheel bearing flange or support plate 1 which has a central bore 2 which has a diameter equal to the diameter of the trussel on which the wheel must be mounted and a central cylindrical, hollow portion 6.
  • a fluid lubricant is fed through the bore 2 into the hollow portion 6 and then the support plate I mounted on the trussel thereby preventing the flow of lubricant back out through the bore 2. Then when the grinding assembly is rotated, the lubricant is centrifuged radially outwardly, as described in more detail hereinafter.
  • This hollow portion is circularly milled in order to have an annular recess or housing 3, the milling being made in such a way that there remains positioned on the inner edge of this housing wedge-shaped ribs 4.
  • the wedge-shaped ribs 4 have two elongated sides in the shape of an arc of a circle and two obliquely directed sides interconnecting the two elongated sides.
  • the obliquely shaped sides are directed obliquely in the direction of rotation of the wheel, as indicated by arrow F, this orientation being considered as parting from the center of the wheel and extending outwardly towards the exterior (FIG. 2).
  • the grinding wheel also comprises a flange or grinding member 8 (FIG. 3) constituted by a crown 9 machined in such a way as to have Wedge shaped projections 10 disposed circularly thereon.
  • These projections equal in number to the number of wedge-shaped ribs 4 on flange 1, have a configuration somewhat similar to that of the ribs 4 and have two obliquely directed sides 11 and 12, these sides being oriented in the same way as those of flange 1, in the sense of rotation F of the wheel.
  • the crown 9 is also provided with rectangular, oblique holes 13 located near each of faces 12.
  • the wedge-shaped projections 10 extend in the housing 3 of flange 1 and cooperate with the wedge-shaped ribs 4 to define a plurality of individual lubricating chambers.
  • the lubricating chambers communicate on the one hand with the hollow 6 of flange 1 via the openings 5 and on the other hand with the other face of the crown 9 via openings 13.
  • the position of the wedge-shaped ribs 4 relative to the wedge-shaped projections 10 is indicated in dotted lines on FIG. 3.
  • a diamond crown or grinding disc 14 (FIG. 4), forming the abrasive surface of the wheel, is glued on the planar surface of crown 9.
  • This diamond crown has rectangular holes 15 having a dimension corresponding to that of the holes 13 of the grinding member or flange 8 and disposed in the same manner as the latter, the diamond crown being secured in such a way that openings 15 coincide exactly with the openings 13.
  • the diamond crown can be made in any known manner, for example with resin binders, with Bakelite, or with metals melting at relatively low temperatures. It can also be cast, pressed or centrifuged.
  • the entrance 5 of the lubricating chambers defined by the flanges 1 and 8 are machined to be biased together in the direction of rotation, i.e., the ribs 4 are forced into engagement with the projections 10 when the grinding wheel is rotated in the direction of the arrow F.
  • the lubricant contained in the hollow 6 centrifuged or forced radially outward and sprayed through the openings 13-15 to the operative surface of the grinding Wheel.
  • the zone of over-pressure existing n the face of the grinding wheel due to the circumferential speed of the wheel and the resulting effect of which is harmful in the case of a conventional lubrication here has a positive effect, laminating laterally the liquid emerging from the openings against the diamond surface.
  • the dirtying of the grinding wheel becomes impossible and lubrication is guaranteed at the point of contact of the tool to be ground and at the points of the diamond.
  • Extensive checking has revealed a clear improvement in the cutting and in particular, an absence of rough spots on the angles of tools or of the materials milled.
  • the positioning of the openings 15 has been adopted in order to grind without the danger of harming the grinding wheel on a sharp edge of a tool.
  • the invention has been disclosed with respect to a diamond plane grinding wheel but it is obvious that the lubricating arrangement can be applied to any other type of grinding wheel, in particular to conical or cylindrical grinding wheels.
  • the abrasive used also can be other than diamond.
  • a grinding wheel assembly comprising: a support plate having therein means defining a recess and a plurality of ribs positioned in said recess in spaced-apart relationship; a grinding member having two opposed side faces; a grinding disc attached to one of said faces and a plurality of projections extending outwardly from the other of said faces into said recess and cooperative with respective ones of said ribs to define a plurality of lubricating chambers; means in said support plate receptive of a fluid lubricant for supplying same to said lubricating chambers; and means in said grinding member providing fluid communication between individual ones of said lubricating chambers and the grinding surface of said grinding disc for supplying fluid lubricant to said grinding disc surface during use of the grinding wheel.
  • each said rib is wedge-shaped and each said projection is complementarily wedge-shaped and abuts with respective ones of said wedge-shaped ribs to define said lubricating chambers.
  • a grinding wheel assembly according to claim 1; wherein said means in said grinding member for supplying fluid lubricant to said grinding disc surface comprises means defining a plurality of holes in said grinding disc surface, and means defining a plurality of holes axially extending through said grinding member providing fluid communication between respective ones of said lubricating chambers and first-mentioned holes.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
US37401A 1966-07-26 1970-05-11 Grinding wheel and lubricant arrangement Expired - Lifetime US3606710A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1080366A CH460572A (fr) 1966-07-26 1966-07-26 Procédé de lubrification d'une meule et meule pour la mise en oeuvre du procédé

Publications (1)

Publication Number Publication Date
US3606710A true US3606710A (en) 1971-09-21

Family

ID=4367021

Family Applications (1)

Application Number Title Priority Date Filing Date
US37401A Expired - Lifetime US3606710A (en) 1966-07-26 1970-05-11 Grinding wheel and lubricant arrangement

Country Status (6)

Country Link
US (1) US3606710A (fr)
BE (1) BE701475A (fr)
CH (1) CH460572A (fr)
DE (1) DE1652070A1 (fr)
FR (1) FR1548351A (fr)
GB (1) GB1137307A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2137594C1 (ru) * 1998-05-26 1999-09-20 Орловский государственный технический университет Абразивный круг
CN110253429A (zh) * 2018-03-12 2019-09-20 蒂罗利特磨料机械斯沃罗夫斯基两合公司 用于磨削发动机缸体的磨削工具
CN109202750B (zh) * 2018-08-22 2020-04-14 郑州磨料磨具磨削研究所有限公司 一种中空堆积磨粒及其制备方法、超硬磨具

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112706084B (zh) * 2020-12-28 2021-12-10 湖南理工学院 一种自适应供给瞬时冷却分块式结构化金刚石砂轮

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2137594C1 (ru) * 1998-05-26 1999-09-20 Орловский государственный технический университет Абразивный круг
CN110253429A (zh) * 2018-03-12 2019-09-20 蒂罗利特磨料机械斯沃罗夫斯基两合公司 用于磨削发动机缸体的磨削工具
CN110253429B (zh) * 2018-03-12 2021-10-15 蒂罗利特磨料机械斯沃罗夫斯基两合公司 用于磨削发动机缸体的磨削工具
US11969852B2 (en) 2018-03-12 2024-04-30 Tyrolit—Schleifmittelwerke Swarovski AG & Co K.G. Grinding tool for grinding an engine block
CN109202750B (zh) * 2018-08-22 2020-04-14 郑州磨料磨具磨削研究所有限公司 一种中空堆积磨粒及其制备方法、超硬磨具

Also Published As

Publication number Publication date
DE1652070A1 (de) 1971-04-15
CH460572A (fr) 1968-07-31
GB1137307A (en) 1968-12-18
FR1548351A (fr) 1968-12-06
BE701475A (fr) 1968-01-02

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