WO2018050159A1 - Bague de palier présentant un revêtement électriquement isolant et procédé d'obtention d'un revêtement électriquement isolant - Google Patents

Bague de palier présentant un revêtement électriquement isolant et procédé d'obtention d'un revêtement électriquement isolant Download PDF

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Publication number
WO2018050159A1
WO2018050159A1 PCT/DE2017/100745 DE2017100745W WO2018050159A1 WO 2018050159 A1 WO2018050159 A1 WO 2018050159A1 DE 2017100745 W DE2017100745 W DE 2017100745W WO 2018050159 A1 WO2018050159 A1 WO 2018050159A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrically insulating
insulating coating
bearing ring
base body
plastic
Prior art date
Application number
PCT/DE2017/100745
Other languages
German (de)
English (en)
Inventor
Georg SMOLORZ
Björn Müller
Milan Madron
Original Assignee
Schaeffler Technologies AG & Co. KG
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 Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Publication of WO2018050159A1 publication Critical patent/WO2018050159A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/583—Details of specific parts of races
    • F16C33/586—Details of specific parts of races outside the space between the races, e.g. end faces or bore of inner ring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/62—Selection of substances
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/64—Special methods of manufacture
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2202/00—Solid materials defined by their properties
    • F16C2202/02—Mechanical properties
    • F16C2202/10—Porosity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2202/00—Solid materials defined by their properties
    • F16C2202/30—Electric properties; Magnetic properties
    • F16C2202/32—Conductivity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
    • F16C2208/02—Plastics; Synthetic resins, e.g. rubbers comprising fillers, fibres
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
    • F16C2208/20—Thermoplastic resins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2223/00—Surface treatments; Hardening; Coating
    • F16C2223/30—Coating surfaces
    • F16C2223/42—Coating surfaces by spraying the coating material, e.g. plasma spraying
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
    • F16C2240/60—Thickness, e.g. thickness of coatings

Definitions

  • the invention relates to a bearing ring with an electrically insulating coating and a method for applying an electrically insulating coating and the use of a thermal spraying process for producing an electrically insulating coating.
  • the field of application of the invention extends primarily to rolling bearings for electrical machines, in particular for vehicles and wind turbines.
  • DE 10 2013 104 186 A1 discloses a bearing ring with a body which has an electrically insulating coating of a ceramic layer with pores and a plastic for filling the pores and coating the ceramic layer.
  • the pores in the ceramic layer have a proportion of 10 to 50%.
  • the object of the invention is to further develop a bearing ring for an electrical machine, and in particular to increase the insulating properties of the bearing ring against AC voltages.
  • a bearing ring according to the invention for an electrical machine comprises an electrically insulating coating which is formed at least partially on a base body of the bearing ring and which is formed from a thermally sprayed plastic.
  • the electrically insulating coating consists of an electrically insulating plastic, which is applied to the base body of the bearing ring by a surface coating method according to the thermal spraying.
  • the electrically insulating plastic may be, for example, a polyetheretherketone (PEEK) or a polyphthalamide (PPA).
  • PEEK polyetheretherketone
  • PPA polyphthalamide
  • Polyetheretherketone has a dielectric constant of 3, whereby the dielectrics of polyphthalamide 4. Such a low dielectric constant has a positive effect on the insulating properties of the electrically insulating coating at alternating voltages.
  • Ceramics used for electrical insulation generally have a significantly higher dielectric constant of 8 to 9.
  • the inventive electrically insulating coating with plastic thus brings a significantly higher capacitive resistance compared with the prior art described above, so that the insulation performance increases and thus the bearing ring according to the invention improved insulation against high-frequency currents in a bearing, in particular a ball or roller bearings, allows.
  • the value of the dielectric constant due to the electrically insulating coating with plastic is more favorable than in the known from the prior art composite layer of ceramic and plastic.
  • the electrical insulation properties at AC voltages are not only dependent on the dielectric constant of the coating material, but also on the layer thickness of the electrically insulating coating.
  • the electrically insulating coating preferably has a layer thickness of 0.05 to 1 mm. Depending on the application, the layer thickness of the electrically insulating coating can vary.
  • the electrically insulating coating preferably comprises reinforcing fibers and / or reinforcing particles in order to improve the mechanical properties.
  • the electrically insulating plastic comprises reinforcing fibers or reinforcing particles of carbon and / or glass and / or aramid.
  • other reinforcing elements or reinforcing materials are conceivable.
  • the basic body of the bearing ring is coated by means of flame spraying.
  • wire flame spraying a wire-shaped spray material is melted by a fuel gas-oxygen flame, compressed air sprayed the melted spray material, in particular the electrically insulating plastic and flings on the substrate provided as the basic body.
  • powder flame spraying is based on the same principle of operation as the wire flame spraying zen, with the difference that the coating material, in particular the electrically insulating plastic is not wire-shaped but powder-shaped.
  • the basic body of the bearing ring is preferably coated by means of high-speed spraying (HVOF), in particular using a powder as the spray material.
  • HVOF high-speed spraying
  • the electrically insulating coating is formed.
  • the electrically insulating coating is applied to an outside of the base body, on two opposite side surfaces of the base body, on a respective fillet of the base body formed between the outside and each side face, and on a respective chamfer of the base body extending from each side face to an inside of the base body.
  • both bearing rings of a roller bearing are at least partially or completely coated with the electrically insulating coating. Consequently, it is also conceivable to coat the inner ring of the rolling bearing.
  • the thermal spraying in particular the flame spraying for melting and Beför- the electrically insulating plastic is used on the base body.
  • plastics are processed by injection molding.
  • an injection mold would be required for each design and layer thickness.
  • the electrically insulating coating is sealed with at least superficial pores with a resin or a polymer.
  • the electrically insulating coating is mechanically processed.
  • the electrically insulating coating is mechanically processed by grinding or polishing in order to preferably adjust the layer thickness of the electrically insulating coating.
  • Figure 1 is a schematic sectional view of a bearing ring according to the invention with an electrically insulating coating
  • Figure 2 is a simplified schematic sectional view of a base body with an electrically insulating coating according to the invention.
  • an inventive bearing ring for an electric machine (not shown here) has a base body 1, on which an electrically insulating coating 2 made of a thermally sprayed plastic is formed. Consequently, the plastic is injected in particular by flame spraying directly onto the base body 1 in order to produce the electrically insulating coating 2.
  • the electrically insulating coating 2 is on an outer side 3 of the base body 1, on two opposite side surfaces 4a, 4b of the main body 1, on a respective between the outer side 3 and each side surface 4a, 4b formed rounding 5a, 5b of the base body 1 and on a respective chamfer 7a, 7b of the base body 1 extending from each side surface 4a, 4b to an inner side 6 of the base body 1.
  • a basic body 1 according to the invention has an electrically insulating coating 2 of a thermally sprayed plastic, the electrically insulating coating 2 comprising reinforcing fibers and / or reinforcing particles 8 for improving the mechanical properties.
  • the electrically insulating coating 2 machined. Furthermore, the electrically insulating coating 2 was sealed for filling - not shown here - pores.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

L'invention concerne une bague de palier pour un moteur électrique. La bague comporte un revêtement (2) électriquement isolant formé au moins en partie sur un corps de base (1) de la bague de palier, le revêtement (2) électriquement isolant étant formé d'une matière plastique ayant fait l'objet d'une projection thermique. L'invention concerne en outre un procédé d'application d'un revêtement (2) électriquement isolant au moins en partie sur un corps de base (1) d'une bague de palier, le revêtement (2) électriquement isolant étant formé par projection thermique d'une matière plastique. L'invention concerne en outre l'utilisation de la projection thermique pour obtenir un revêtement (2) électriquement isolant fait d'une matière plastique sur un corps de base (1) d'une bague de palier.
PCT/DE2017/100745 2016-09-13 2017-09-06 Bague de palier présentant un revêtement électriquement isolant et procédé d'obtention d'un revêtement électriquement isolant WO2018050159A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016217366.9 2016-09-13
DE102016217366.9A DE102016217366A1 (de) 2016-09-13 2016-09-13 Lagerring mit einer elektrisch isolierenden Beschichtung sowie Verfahren zur Herstellung einer elektrisch isolierenden Beschichtung

Publications (1)

Publication Number Publication Date
WO2018050159A1 true WO2018050159A1 (fr) 2018-03-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2017/100745 WO2018050159A1 (fr) 2016-09-13 2017-09-06 Bague de palier présentant un revêtement électriquement isolant et procédé d'obtention d'un revêtement électriquement isolant

Country Status (2)

Country Link
DE (1) DE102016217366A1 (fr)
WO (1) WO2018050159A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019216841A1 (fr) 2018-05-09 2019-11-14 Ortadogu Rulman Sanayi Ve Ticaret Anonim Sirketi Procédé de production de palier à rouleaux isolés électriques

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020102078A1 (de) * 2020-01-29 2020-12-31 Schaeffler Technologies AG & Co. KG Elektrische Antriebsanordnung mit einer Ableiteinrichtung mit isolierter Lagereinrichtung
DE102020201509A1 (de) 2020-02-07 2021-08-12 Minebea Mitsumi Inc. Wälzlager mit einer elektrisch isolierenden Schicht und Verfahren zum Aufbringen einer elektrisch isolierenden Schicht
DE102020131018A1 (de) 2020-11-24 2022-05-25 Schaeffler Technologies AG & Co. KG Wälzlager

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2415327A1 (de) * 1973-06-13 1975-01-16 Glacier Metal Co Ltd Gleitlager und verfahren zu ihrer herstellung
US5375933A (en) * 1990-03-26 1994-12-27 Ntn Corporation Rolling contact bearing protected against electrolytic corrosion
EP1408249A1 (fr) * 2002-10-08 2004-04-14 Ntn Corporation Palier à rouleaux avec protection contre l'électrocorrosion
DE102013104186A1 (de) 2013-04-25 2014-10-30 Coatec Gmbh Lagerring, elektrisch isolierende Beschichtung und Verfahren zum Aufbringen einer elektrisch isolierenden Beschichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0743488Y2 (ja) 1987-09-01 1995-10-09 株式会社不二越 電食防止形ころがり軸受
US20120114971A1 (en) 2007-01-05 2012-05-10 Gerd Andler Wear resistant lead free alloy sliding element method of making
DE102009056349A1 (de) 2009-11-30 2011-06-01 Schaeffler Technologies Gmbh & Co. Kg Wälzlager
JP5905681B2 (ja) 2011-08-23 2016-04-20 Ntn株式会社 転がり軸受

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2415327A1 (de) * 1973-06-13 1975-01-16 Glacier Metal Co Ltd Gleitlager und verfahren zu ihrer herstellung
US5375933A (en) * 1990-03-26 1994-12-27 Ntn Corporation Rolling contact bearing protected against electrolytic corrosion
EP1408249A1 (fr) * 2002-10-08 2004-04-14 Ntn Corporation Palier à rouleaux avec protection contre l'électrocorrosion
DE102013104186A1 (de) 2013-04-25 2014-10-30 Coatec Gmbh Lagerring, elektrisch isolierende Beschichtung und Verfahren zum Aufbringen einer elektrisch isolierenden Beschichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019216841A1 (fr) 2018-05-09 2019-11-14 Ortadogu Rulman Sanayi Ve Ticaret Anonim Sirketi Procédé de production de palier à rouleaux isolés électriques

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Publication number Publication date
DE102016217366A1 (de) 2018-03-15

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