US20230182256A1 - Laboratory Disk Grinder, Replacement Grinding Disk and Use of a Grinding Disk - Google Patents

Laboratory Disk Grinder, Replacement Grinding Disk and Use of a Grinding Disk Download PDF

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Publication number
US20230182256A1
US20230182256A1 US17/924,915 US202117924915A US2023182256A1 US 20230182256 A1 US20230182256 A1 US 20230182256A1 US 202117924915 A US202117924915 A US 202117924915A US 2023182256 A1 US2023182256 A1 US 2023182256A1
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US
United States
Prior art keywords
grinding
disc
grinding disc
abrasive
specimen
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.)
Pending
Application number
US17/924,915
Other languages
English (en)
Inventor
Robert HÖLL
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.)
Atm Qness GmbH
Original Assignee
Atm Qness GmbH
ATM Qness GmbH
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 Atm Qness GmbH, ATM Qness GmbH filed Critical Atm Qness GmbH
Assigned to ATM QNESS GMBH reassignment ATM QNESS GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: Höll, Robert
Publication of US20230182256A1 publication Critical patent/US20230182256A1/en
Pending 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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/04—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor involving a rotary work-table
    • 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
    • B24B41/06—Work supports, e.g. adjustable steadies
    • B24B41/067—Work supports, e.g. adjustable steadies radially supporting workpieces
    • 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
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
    • 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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/16—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings

Definitions

  • uneven wear of the abrasive can additionally be avoided on the radial outer side of the grinding disc as well by having specimen or specimens also exceed the grinding peripheral annular region in the radially outward direction, i.e. projecting or extending radially outward beyond the grinding peripheral annular region.
  • the multilayer abrasive layer is self-sharpening, e.g. in such a way that dull abrasive grit, for example diamond particles, break out during the grinding process and fresh abrasive grit, e.g. diamond particles, emerge from an underlying layer to the surface.
  • dull abrasive grit for example diamond particles
  • fresh abrasive grit e.g. diamond particles
  • the grinding peripheral annular first surface or the annular abrasive layer preferably has an inner diameter D_i and an outer diameter D_a, with half of the difference between the inner diameter D_i and the outer diameter D_a, defining the radial width B_r of the annular abrasive layer and being between 240 mm and 20 mm, preferably between 180 mm and 25 mm, preferably 30 mm+/ ⁇ 10 mm or 125 mm +/ ⁇ 50 mm.
  • the radial width B_r of the annular abrasive layer can be 30 mm+/ ⁇ 10 mm or between 5% and 50% narrower than the diameter of the mounted specimen, and for a specimen holder with a plurality of specimens, the radial width B_r of the annular abrasive layer can be 125 mm+/ ⁇ 50 mm or between 150% and 400% of the diameter of an individual mounted specimen.
  • the grinding peripheral annular first surface or the annular abrasive layer has an inner diameter D_i and an outer diameter D_a, the inner diameter D_i corresponding to the outer diameter of the passive non-abrasive central second surface and the inner diameter D_i preferably being between 20 mm and 450 mm, preferably between 30 mm and 300 mm, preferably 50 mm+/ ⁇ 30 mm for a specimen holder with a plurality of specimen or 250 mm+/ ⁇ 50 mm for an individual specimen and/or the outer diameter D_a preferably being between 100 mm and 500 mm, preferably between 150 mm and 400 mm, preferably in the range of 300 mm+/ ⁇ 50 mm.
  • One aspect of the invention also relates to the use of the described replacement grinding disc in said laboratory wheel grinder.
  • FIG. 7 is another embodiment of the laboratory wheel grinder
  • FIG. 10 is a vertical section through the device head of FIG. 9 .
  • the specimen holder 24 and the six mounted specimens or mounted samples 30 inserted therein rotate about the axis of rotation AK of the piston 20 or the connecting pin 26 .
  • the six mounted specimens 30 describe a circular motion about the axis AK and thereby define a total outer circumference 31 with a total outer diameter D_g of about 130 mm in the present example ( FIG. 4 ).
  • the grinding disc 16 now rotates about the grinding disc axis AS on the one hand, and the specimen holder 24 rotates about the axis AK of the piston 20 on the other hand, with the axis AK of rotation of the specimen holder running laterally parallel to the axis AS of rotation of the grinding disc ( FIG. 4 , 5 ).
  • the total circumference 31 is outside the grinding disc axis AS, which is advantageous, because the circumferential speed of the grinding disc is zero at its own axis of rotation AS.
  • the distance between the axes of rotation AK and AS is now selected so that the overall circumferential line 31 of the mounted specimens 30 intersects with the separation line 48 between the peripheral annular region 42 and the central inner region 44 , i.e., with the inner diameter D_i of the annular abrasive layer 47 .
  • the mounted specimens 30 travel inwardly beyond the peripheral annular region 42 with abrasive material into the inner region 44 without abrasive material.
  • there is no location on the grinding disc 16 with abrasive material is not traversed by the mounted specimens 30 , thus ensuring a uniform wear of the abrasive material.
  • the grinding disc 16 has a stiff carrier disc 62 and the abrasive material 46 bonded to the carrier disc 62 in the form of abrasive grit of a specific grit size mounted in the bonding agent, thereby forming the abrasive layer 47 .
  • the abrasive grit is applied to the carrier disc in multiple layers to form a self-sharpening grinding disc 16 .
  • the abrasive grit is printed as a powder onto the grinding disc 16 , in this example directly onto the upper surface 62 b of the carrier disc 62 , for example by means of a screen-printing process with a synthetic resin bonding agent.
  • the step 64 which runs downward from the peripheral annular region 42 into the inner region 44 , ensures that even if the abrasive 46 in the peripheral annular region 42 is significantly worn, the specimen 30 still has a sufficient axial distance from the upper surface 62 b of the carrier disc 62 and, in particular, that no undesirable step can occur upward from the peripheral annular region 42 into the inner region 44 , as is the case with conventional grinding discs when the abrasive in the central region of the grinding disc is not worn off by the specimen or specimens. Therefore, a regular removal in order to render the grinding disc plane again can be dispensed with.
  • the lower surface 62 a of the carrier disc 62 is adhered to the upper surface 58 b of the grinding disc mounting plate 58 .
  • the device head 14 has a linear drive mechanism 78 by means of which the specimen holder 24 and thus the specimen 30 or specimens 30 are applied against the grinding disc 16 with a defined force F, with the piston 20 rotating at the same time.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
US17/924,915 2020-05-15 2021-05-10 Laboratory Disk Grinder, Replacement Grinding Disk and Use of a Grinding Disk Pending US20230182256A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102020113324.3A DE102020113324A1 (de) 2020-05-15 2020-05-15 Labor-Tellerschleifgerät, Verfahren, Ersatzschleifscheibe und Verwendung einer Schleifscheibe
DE102020113324.3 2020-05-15
PCT/EP2021/062300 WO2021228753A1 (de) 2020-05-15 2021-05-10 Labor-tellerschleifgerät, ersatzschleifscheibe und verwendung einer schleifscheibe

Publications (1)

Publication Number Publication Date
US20230182256A1 true US20230182256A1 (en) 2023-06-15

Family

ID=75977744

Family Applications (1)

Application Number Title Priority Date Filing Date
US17/924,915 Pending US20230182256A1 (en) 2020-05-15 2021-05-10 Laboratory Disk Grinder, Replacement Grinding Disk and Use of a Grinding Disk

Country Status (6)

Country Link
US (1) US20230182256A1 (de)
EP (1) EP4149719A1 (de)
JP (1) JP2023528236A (de)
CN (1) CN115666849A (de)
DE (1) DE102020113324A1 (de)
WO (1) WO2021228753A1 (de)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1833543U (de) 1961-03-04 1961-06-22 Steeg & Reuter G M B H Dr Vorrichtung zur herstellung von duennschliffen.
FR1474912A (fr) 1966-02-14 1967-03-31 Disque pour le polissage et le rodage, notamment de pièces mécaniques et d'échantillons métallographiques
FR1475016A (fr) 1966-02-18 1967-03-31 Commissariat Energie Atomique Dispositif de polissage d'échantillons
DE102012023688A1 (de) * 2012-10-14 2014-04-17 Dronco Ag Geometrisch bestimmtes Schleifkorn, Verfahren zur Herstellung derartiger Schleifkörner und deren Verwendung in einer Schleifscheibe oder in einem Schleifmittel auf Unterlage
US20180136094A1 (en) * 2014-11-12 2018-05-17 Illinois Tool Works Inc. Planar grinder
US11397139B2 (en) * 2017-02-27 2022-07-26 Leco Corporation Metallographic grinder and components thereof

Also Published As

Publication number Publication date
CN115666849A (zh) 2023-01-31
WO2021228753A1 (de) 2021-11-18
DE102020113324A1 (de) 2021-11-18
JP2023528236A (ja) 2023-07-04
EP4149719A1 (de) 2023-03-22

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Owner name: ATM QNESS GMBH, AUSTRIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HOELL, ROBERT;REEL/FRAME:062463/0798

Effective date: 20230109

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION