EP0459235A1 - Dispositif pour l'alimentation du moyen de refroidissement et de lubrification sur une rectifieuse à grande vitesse de contours extérieurs - Google Patents

Dispositif pour l'alimentation du moyen de refroidissement et de lubrification sur une rectifieuse à grande vitesse de contours extérieurs Download PDF

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Publication number
EP0459235A1
EP0459235A1 EP91107910A EP91107910A EP0459235A1 EP 0459235 A1 EP0459235 A1 EP 0459235A1 EP 91107910 A EP91107910 A EP 91107910A EP 91107910 A EP91107910 A EP 91107910A EP 0459235 A1 EP0459235 A1 EP 0459235A1
Authority
EP
European Patent Office
Prior art keywords
grinding wheel
cooling lubricant
funnel
feed hopper
nozzle
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.)
Withdrawn
Application number
EP91107910A
Other languages
German (de)
English (en)
Inventor
Dieter Dr.-Ing. Simpfendörfer
Phon Dipl.-Ing. Dao-Xuan
Walter Weil
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.)
Diskus Werke Frankfurt am Main AG
Original Assignee
Diskus Werke Frankfurt am Main AG
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 Diskus Werke Frankfurt am Main AG filed Critical Diskus Werke Frankfurt am Main AG
Publication of EP0459235A1 publication Critical patent/EP0459235A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • B24B55/04—Protective covers for the grinding wheel
    • B24B55/045—Protective covers for the grinding wheel with cooling means incorporated

Definitions

  • the invention relates to a device for supplying cooling lubricant to a machine for high-speed peripheral grinding of external contours with a grinding wheel encapsulated by a protective hood.
  • the amount of heat generated in the contact zone between the grinding wheel and the workpiece must be minimized and removed as quickly and comprehensively as possible using an auxiliary medium.
  • a cooling lubricant is supplied to the contact zone, the penetration of which into the active gap becomes more difficult as the peripheral speed increases due to the air cushion surrounding the grinding wheel.
  • the cooling lubricant in known systems is under high pressure and conveyed with a large volume flow from nozzle-like openings.
  • Free jet nozzles or shoe nozzles are known for this.
  • Open-jet nozzles generate a free-flowing cooling lubricant jet which, due to its high speed, should penetrate the air cushion surrounding the grinding wheel at a suitable point, which requires a high level of technical effort.
  • Shoe nozzles are largely adapted to the curvature of the grinding wheel and are closed on all sides except for an opening to the grinding wheel, so that the cooling lubricant can penetrate better into the air boundary layer; however, they become ineffective to the extent that the grinding wheel diameter decreases due to wear.
  • DE-OS 20 23 200 it is also known to use a funnel-shaped nozzle which opens towards the grinding wheel and overlaps the same, with a nozzle lip which is adjustable in the direction of rotation of the grinding wheel to prevent the formation of an air cushion.
  • the device according to the invention according to the preamble of claim 1 is characterized in that the feed hopper is pivotable about an axis parallel to the grinding wheel axis and has a motor-adjustable slide on the outlet side for metering the cooling lubricant volume flow.
  • the nozzle which is variable in its orientation but is preferably arranged radially, thus forms in the outflow area a chamber which is closed on all sides except for narrow gaps and has a defined outlet cross section for the cooling lubricant.
  • the feed hopper is arranged within the protective hood.
  • the grinding wheel is so closely surrounded on its circumference that the unhindered build-up of a stable air cushion as a result of its high circumferential speed is avoided from the outset, and on the other hand, the nozzle itself is designed in such a way that the thin air layer remaining on the circumference of the grinding wheel before reaching the Is deflected inside the nozzle.
  • the feed hopper is inclined at approximately 45 ° against the connecting line of the center points of the grinding wheel and the workpiece in the direction of the opposite direction of the wheel and for this purpose approximately angularly symmetrical to said Connecting line, a drain opening for the cooling lubricant is provided in the protective hood.
  • This funnel 6 covers the grinding wheel 3 on both sides at 7 and is closed on the side of the grinding wheel 3 running in the direction of rotation R by means of an adjustable nozzle lip 8 and on the running side by means of an adjustable slide 9 for metering the quantity of cooling lubricant running out per unit of time by means of drive 10 shut down.
  • the profile of the metering slide facing the grinding wheel is obtained by grinding.
  • the nozzle lip 8 facing away from the workpiece is e.g. by means of an eccentric device 11 with an elongated hole guide 12, depending on the nozzle orientation, can be sensitively adjusted.
  • the aim is to bring the nozzle lip 8 so close to the surface of the grinding wheel that the air cushion surrounding the rotating grinding wheel 3 due to the high peripheral speed is prevented from penetrating into the nozzle chamber (feed funnel 6), as a result of which the interior of the nozzle is filled with cooling lubricant at low pressure and the acceleration of the same to high flow speed becomes possible by utilizing the rotational movement of the grinding wheel.
  • the feed hopper 6 is directed as a nozzle chamber when the workpiece 13 is fed horizontally at approximately 45 ° against the connecting line of the center points of the grinding wheel 3 and workpiece 13, below which is approximately angularly symmetrical to the said one Connection line provided the drain opening 14 for the cooling lubricant in the protective hood 2.
  • the orientation of the feed funnel 6 can be changed by rotating about an axis S parallel to the grinding wheel axis, the smoothness of the nozzle swiveling movement about the axis of rotation S being set by means of two locknuts 15 which are countered to one another.
  • the selected nozzle orientation which is based on the radial direction, is maintained by clamping via one or more screws 17 engaging in a kidney-shaped groove 16; the invention provides to supply the cooling lubricant M to the nozzle (funnel 6) laterally in a pipe or hose line 18 such that its center line coincides with the axis of rotation S of the feed funnel 6.
  • the protective hood 2 is provided with an opening flap 19 arranged on the front, the closure of which is monitored by an inductive sensor 20, and which is linked by a locking magnet 21 to the speed of the tool motor in such a way that the locking magnet 21 opens the protective hood 2 only possible after grinding wheel standstill.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
EP91107910A 1990-06-01 1991-05-16 Dispositif pour l'alimentation du moyen de refroidissement et de lubrification sur une rectifieuse à grande vitesse de contours extérieurs Withdrawn EP0459235A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4017716A DE4017716A1 (de) 1990-06-01 1990-06-01 Vorrichtung zur kuehlschmiermittelzufuhr beim hochgeschwindigkeits-umfangschleifen von aussenkonturen
DE4017716 1990-06-01

Publications (1)

Publication Number Publication Date
EP0459235A1 true EP0459235A1 (fr) 1991-12-04

Family

ID=6407647

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91107910A Withdrawn EP0459235A1 (fr) 1990-06-01 1991-05-16 Dispositif pour l'alimentation du moyen de refroidissement et de lubrification sur une rectifieuse à grande vitesse de contours extérieurs

Country Status (4)

Country Link
US (1) US5111625A (fr)
EP (1) EP0459235A1 (fr)
JP (1) JPH04226860A (fr)
DE (1) DE4017716A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5558564A (en) * 1993-10-22 1996-09-24 Ascalon; Adir Faceting machine

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3257968B2 (ja) * 1997-07-22 2002-02-18 株式会社ディスコ 切削装置のブレードカバー
DE19916002A1 (de) * 1999-04-09 2000-10-12 Schaudt Maschinenbau Gmbh Anordnung zur Versorgung einer Schleifeingriffsstelle mit Kühlschmierstoff
US6318351B1 (en) 1999-09-17 2001-11-20 Bioart Longyear Company Waste containment system for an abrading or cutting device
US7114494B2 (en) * 1999-09-17 2006-10-03 Husqvarna Professional Outdoor Products Inc. Fluid pickup assembly and blade guard for a pavement treatment apparatus
JP4735381B2 (ja) * 2006-04-05 2011-07-27 株式会社デンソー 研削装置および研削方法
US7568968B2 (en) 2007-08-16 2009-08-04 Rolls-Royce Corporation Coolant nozzle positioning for machining work-pieces
DE102009043678A1 (de) * 2009-10-01 2011-04-07 Kapp Gmbh Hartfeinbearbeitungsmaschine zum Hartfeinbearbeiten eines Werkstücks
DE102009043676A1 (de) * 2009-10-01 2011-07-07 KAPP GmbH, 96450 Hartfeinbearbeitungsmaschine zum Hartfeinbearbeiten eines Werkstücks
IT1401503B1 (it) * 2010-08-02 2013-07-26 Tenova Spa Dispositivo di protezione per una mola a disco
DE102012010005A1 (de) * 2012-05-22 2013-11-28 Satisloh Ag Zentriermaschine für Werkstücke, insbesondere optische Linsen
DE102020007588A1 (de) 2020-12-11 2022-06-15 Rheinische Fachhochschule Köln gGmbH Anordnung zur Luftpolsterableitung an einer Schleifmaschine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2119343A5 (fr) * 1970-12-26 1972-08-04 Toyoda Machine Works Ltd
FR2298415A1 (fr) * 1975-01-28 1976-08-20 Toyoda Machine Works Ltd Garde de protection pour machine a meuler

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4720382Y1 (fr) * 1969-05-12 1972-07-08
US3712001A (en) * 1971-02-05 1973-01-23 Cincinnati Milacron Inc Coolant discharge system for grinding machine
US4176500A (en) * 1976-09-24 1979-12-04 Centre Technique Des Industries Mecaniques Sprinkling device for grinding wheels

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2119343A5 (fr) * 1970-12-26 1972-08-04 Toyoda Machine Works Ltd
FR2298415A1 (fr) * 1975-01-28 1976-08-20 Toyoda Machine Works Ltd Garde de protection pour machine a meuler

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 10 (M-446)(2067) 16. Januar 1986 & JP-A-60 172 467 (TAKEHIKO SASAYAMA ) 5. September 1985 *
Soviet Inventions Illustrated Derwent Pub. Ltd. London, Mechanik W. 8938 & SU-A-1463 455 (AS BELO PHYS TECH) *
Soviet Inventions Illustrated Derwent Pub. Ltd. London, Mechanik W.8936 & SU-A-1442 381 (AS BELO PHYS TECH) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5558564A (en) * 1993-10-22 1996-09-24 Ascalon; Adir Faceting machine

Also Published As

Publication number Publication date
DE4017716A1 (de) 1991-12-05
DE4017716C2 (fr) 1992-04-09
US5111625A (en) 1992-05-12
JPH04226860A (ja) 1992-08-17

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