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WO1998057779A1 - Cleaning method for abrasive disks - Google Patents

Cleaning method for abrasive disks Download PDF

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Publication number
WO1998057779A1
WO1998057779A1 PCT/EP1998/003552 EP9803552W WO9857779A1 WO 1998057779 A1 WO1998057779 A1 WO 1998057779A1 EP 9803552 W EP9803552 W EP 9803552W WO 9857779 A1 WO9857779 A1 WO 9857779A1
Authority
WO
WIPO (PCT)
Prior art keywords
grinding
powder
cleaning
wheel
grinding wheels
Prior art date
Application number
PCT/EP1998/003552
Other languages
German (de)
French (fr)
Inventor
David Gondosch
Original Assignee
Zf Friedrichshafen 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 Zf Friedrichshafen Ag filed Critical Zf Friedrichshafen Ag
Publication of WO1998057779A1 publication Critical patent/WO1998057779A1/en

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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
    • B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
    • B24B53/007—Cleaning of grinding wheels

Definitions

  • the invention relates to a method for cleaning grinding wheels according to the preamble of claim 1.
  • grinding wheels used in grinding processes are added during the process by abrasion.
  • these materials can consist of the ground material of the machined piece and, on the other hand, also include material of the grinding wheel itself.
  • the abrasion materials clog the pores on the surface of the grinding wheel and reduce the grinding performance of the wheel because the wheel becomes dull. At the same time, the risk of grinding burn is increased with a blunt grinding wheel.
  • the invention has for its object to clean a blunt grinding wheel so that further use is possible.
  • the grain size of the powder to be used should preferably be adjusted to the roughness of the grinding wheel.
  • An advantageous grain size has a grain size of 0.07 to 0.15 mm.
  • the process is particularly suitable for cleaning CBN grinding wheels.
  • a glass bead powder / blasting sand which is usually used for deburring gearwheels, has proven to be particularly advantageous.
  • This powder is sold under the name VG-620 150-250 M9.
  • the grinding wheels can be cleaned automatically if the grinding fire prevention process detects an increasing risk of grinding fire. If the powder pressure washer is arranged near the grinding wheel, the wheel is cleaned without having to be dismantled. The grinding process can then be continued without correcting the grinding wheel setting and increasing the feed rate again.
  • the useful life of grinding wheels can be significantly extended.
  • the machine costs with regard to disc change are significantly reduced or can be avoided.
  • the proposed method is environmentally friendly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Abstract

The invention relates to a method for cleaning abrasive disks, wherein blunt or loaded abrasive disks are blasted with a powder from a high-pressure cleaning device.

Description

Reinigungsverfahren für Schleifscheiben Cleaning process for grinding wheels
Die Erfindung betrifft ein Verfahren zur Reinigung von Schleifscheiben nach dem Oberbegriff von Anspruch 1.The invention relates to a method for cleaning grinding wheels according to the preamble of claim 1.
Es ist bekannt, daß m Schleifprozessen verwendete Schleifscheiben wahrend des Prozesses durch Abrieb ateπa- lien zugesetzt werden. Diese Materialien können einerseits aus dem abgeschliffenen Material des bearbeiteten erkstuk- kes bestehen und andererseits auch Material der Schleifscheibe selbst umfassen. Die Abriebmaterialien setzen die Poren der Oberflache der Schleifscheibe zu und verringern die Schleifleistung der Scheibe, weil die Scheibe stumpf wird. Gleichzeitig wird mit einer stumpfen Schleifscheibe die Gefahr des Schleifbrandes erhöht.It is known that grinding wheels used in grinding processes are added during the process by abrasion. On the one hand, these materials can consist of the ground material of the machined piece and, on the other hand, also include material of the grinding wheel itself. The abrasion materials clog the pores on the surface of the grinding wheel and reduce the grinding performance of the wheel because the wheel becomes dull. At the same time, the risk of grinding burn is increased with a blunt grinding wheel.
Der Erfindung liegt die Aufgabe zugrunde, eine stumpf gewordene Schleifscheibe derart zu reinigen, daß eine Weiterverwendung möglich ist.The invention has for its object to clean a blunt grinding wheel so that further use is possible.
Die Aufgabe wird gelost durch ein Verfahren mit den Merkmalen nach Anspruch 1. Ausgestaltungen sind Gegenstand von Unteranspruchen.The object is achieved by a method having the features of claim 1. Refinements are the subject of subclaims.
Erfmdungsgemaß wird vorgeschlagen, eine stumpfe Schleifscheibe mit einem Pulverhochdruckreiniger mit einem Pulver mit sanfter Körnung zu bestrahlen. Das Profil der Schleifscheibe und die Rauhtiefe wird dadurch nicht verändert .According to the invention, it is proposed to irradiate a blunt grinding wheel with a powder high-pressure cleaner with a powder with a gentle grain. This does not change the profile of the grinding wheel and the roughness.
Im Gegensatz zu einem Abrichten der Schleifscheibe mit einem beispielsweise diamantbesetzen Abrichtwerkzeug, laßt sich eine derart gereinigte Scheibe sofort wieder einsetzen, ohne daß ein neues Einrichten der Schleifscheibe erforderlich ist. Rüstzeiten für die Maschmenemrichtung können dadurch verringert bzw. vermieden werden. Wenn der Pulverhochdruckreiniger m direkter Nahe der Schleifscheibe vorgesehen ist, kann die Schleifscheibe ohne Demontage gereinigt werden. Entsprechende Abdichtungen zur Vermeidung von Verunreinigungen durch Pulver sind vorzusehen.In contrast to dressing the grinding wheel with a dressing tool, for example, set with diamond such a wheel can be reinserted immediately without having to set up the grinding wheel again. Set-up times for the machine direction can thereby be reduced or avoided. If the high-pressure powder cleaner is provided close to the grinding wheel, the grinding wheel can be cleaned without disassembly. Appropriate seals to prevent contamination from powder must be provided.
Vorzugsweise ist die Körnung des einzusetzenden Pulvers auf die Rauhtiefe der Schleifscheibe einzustellen. Eine vorteilhafte Körnung weist eine Korngroße von 0.07 bis 0.15 mm auf. Das Verfahren eignet sich insbesondere zur Reinigung von CBN-SchleifScheiben.The grain size of the powder to be used should preferably be adjusted to the roughness of the grinding wheel. An advantageous grain size has a grain size of 0.07 to 0.15 mm. The process is particularly suitable for cleaning CBN grinding wheels.
Als besonders vorteilhaft hat sich ein Glasperlenpulver/Strahlsand herausgestellt, der üblicherweise zur Entgratung von Zahnradern verwendet wird. Dieses Pulver wird unter der bezeichnung VG-620 150-250 M9 vertrieben.A glass bead powder / blasting sand, which is usually used for deburring gearwheels, has proven to be particularly advantageous. This powder is sold under the name VG-620 150-250 M9.
Bei einem aus der DE-Al 43 18 102 bekannt gewordenen Schleifprozess mit Schleifbrandvermeidung kann die Reinigung der Schleifscheiben automatisiert erfolgen, wenn der Schleifbrandvermeidungsprozess eine zunehmende Schleif- brandgefahrdung erkennt. Bei einer Anordnung des Pulver- hochdruckreinigers m der Nahe der Schleifscheibe wird die Scheibe gereinigt, ohne daß diese demontiert werden muß. Der Schleifprozess laßt sich anschließend ohne Korrektur der Schleifscheibenemstellung unter erneuter Erhöhung des Vorschubes fortsetzen.In a grinding process known from DE-Al 43 18 102 with prevention of grinding burns, the grinding wheels can be cleaned automatically if the grinding fire prevention process detects an increasing risk of grinding fire. If the powder pressure washer is arranged near the grinding wheel, the wheel is cleaned without having to be dismantled. The grinding process can then be continued without correcting the grinding wheel setting and increasing the feed rate again.
Durch das erfmdungsgemaße Verfahren lassen sich die Nutzungszeiten von Schleifscheiben deutlich verlangern. Gleichzeitig sind die Maschinenkosten in Bezug auf Scheibenwechsel wesentlich reduziert oder können vermieden werden. Weiterhin ist das vorgeschlagene Verfahren umweltschonend. With the method according to the invention, the useful life of grinding wheels can be significantly extended. At the same time, the machine costs with regard to disc change are significantly reduced or can be avoided. Furthermore, the proposed method is environmentally friendly.

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Verfahren zur Reinigung von stumpfen bzw. zugesetzten Schleifscheiben, dadurch g e k e n n z e i c h n e t , daß die Schleifscheiben mit einem Pulver mit Hochdruck bestrahlt werden.1. A method for cleaning blunt or clogged grinding wheels, in that the grinding wheels are irradiated with a powder at high pressure.
2. Verfahren zur Reinigung von Schleifscheiben nach Anspruch 1, dadurch g e k e n n z e i c h n e t , daß die Körnung des Pulvers der Rauhtiefe der Schleifschei- benoberflache entspricht.2. A method for cleaning grinding wheels according to claim 1, characterized in that the grain of the powder corresponds to the surface roughness of the grinding wheel surface.
3. Verfahren zur Reinigung von Schleifscheiben nach Anspruch 1 oder 2, dadurch g e k e n n z e i c h n e t , daß die Körnung zwischen 0.07 und 0.15 mm betragt.3. A method for cleaning grinding wheels according to claim 1 or 2, characterized in that the grain size is between 0.07 and 0.15 mm.
4. Verfahren zur Reinigung von Schleifscheiben nach einem der Ansprüche 1 bis 3, dadurch g e k e n n z e i c h n e t , daß ein Glasperlenpulver/Strahlsand verwendet wird.4. A method for cleaning grinding wheels according to one of claims 1 to 3, characterized in that a glass bead powder / blasting sand is used.
5. Verfahren zur Reinigung von Schleifscheiben nach Anspruch 4, dadurch g e k e n n z e i c h n e t , daß Glasperlenpulver/Strahlsand mit der Kennung VG-620 150- 250 M9 verwendet wird.5. A method for cleaning grinding wheels according to claim 4, characterized in that glass bead powder / blasting sand with the identifier VG-620 150-250 M9 is used.
6. Verfahren zur Reinigung von Schleifscheiben nach einem der Ansprüche 1 bis 5, dadurch g e k e n n z e i c h n e t , daß bei einem automatisierten Schleif- brandvermeidungsprozess die Reinigung der Schleifscheibe selbsttätig erfolgt, wenn eine stumpfe Schleifscheibe und ein damit verbundenes Schleifbrandrisiko erkannt wird. 6. A method for cleaning grinding wheels according to one of claims 1 to 5, characterized in that in an automated grinding fire prevention process, the cleaning of the grinding wheel takes place automatically when a blunt grinding wheel and an associated risk of grinding fire is detected.
7. Schleifeinrichtung mit Pulverhochdruckreiniger zur Anwendung eines Verfahrens nach einem der vorherigen Ansprüche, dadurch g e k e n n z e i c h n e t , daß der Pulverreiniger in der Schleifeinrichtung in der Nähe der Schleifscheibe angeordnet ist, so daß das Pulver auf die Scheibe strahlbar ist, ohne die Schleifscheibe zu demontieren.7. Grinding device with high-pressure powder cleaner for using a method according to one of the preceding claims, characterized in that the powder cleaner is arranged in the grinding device in the vicinity of the grinding wheel, so that the powder can be blasted onto the wheel without dismantling the grinding wheel.
8. Schleifeinrichtung nach Anspruch 7, dadurch g e k e n n z e i c h n e t , daß Mittel vorgesehen sind, um eine Verunreinigung der Schleifeinrichtung durch das Pulver zu vermeiden.8. Grinding device according to claim 7, characterized in that means are provided in order to avoid contamination of the grinding device by the powder.
9. Verwendung eines Glasperlenpulvers/Strahlsandes zur Reinigung von Schleifscheiben. 9. Use a glass bead powder / blasting sand for cleaning grinding wheels.
PCT/EP1998/003552 1997-06-17 1998-06-12 Cleaning method for abrasive disks WO1998057779A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19725543.4 1997-06-17
DE1997125543 DE19725543A1 (en) 1997-06-17 1997-06-17 Cleaning process for grinding wheels

Publications (1)

Publication Number Publication Date
WO1998057779A1 true WO1998057779A1 (en) 1998-12-23

Family

ID=7832709

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/003552 WO1998057779A1 (en) 1997-06-17 1998-06-12 Cleaning method for abrasive disks

Country Status (2)

Country Link
DE (1) DE19725543A1 (en)
WO (1) WO1998057779A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3747276A (en) * 1971-05-07 1973-07-24 Christensen Diamond Prod Co Method and apparatus for contouring and sharpening circular saws
EP0584578A1 (en) * 1992-07-31 1994-03-02 Ngk Insulators, Ltd. A ground dust removing apparatus and method for grinding wheel
DE4424829A1 (en) * 1994-07-14 1996-01-18 Zahnradfabrik Friedrichshafen Device for a method for avoiding excessive stress on a workpiece during grinding

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE177190C (en) *
DE4318102A1 (en) * 1993-06-01 1994-12-08 Zahnradfabrik Friedrichshafen Process to avoid overstressing a workpiece during grinding

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3747276A (en) * 1971-05-07 1973-07-24 Christensen Diamond Prod Co Method and apparatus for contouring and sharpening circular saws
EP0584578A1 (en) * 1992-07-31 1994-03-02 Ngk Insulators, Ltd. A ground dust removing apparatus and method for grinding wheel
DE4424829A1 (en) * 1994-07-14 1996-01-18 Zahnradfabrik Friedrichshafen Device for a method for avoiding excessive stress on a workpiece during grinding

Also Published As

Publication number Publication date
DE19725543A1 (en) 1998-12-24

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