WO2015091456A1 - Joint en multiples matériaux, palier, et méthode de production - Google Patents

Joint en multiples matériaux, palier, et méthode de production Download PDF

Info

Publication number
WO2015091456A1
WO2015091456A1 PCT/EP2014/077922 EP2014077922W WO2015091456A1 WO 2015091456 A1 WO2015091456 A1 WO 2015091456A1 EP 2014077922 W EP2014077922 W EP 2014077922W WO 2015091456 A1 WO2015091456 A1 WO 2015091456A1
Authority
WO
WIPO (PCT)
Prior art keywords
seal
bearing
additive manufacturing
printed
manufacturing process
Prior art date
Application number
PCT/EP2014/077922
Other languages
English (en)
Inventor
Alejandro Sanz
Original Assignee
Aktiebolaget Skf
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 Aktiebolaget Skf filed Critical Aktiebolaget Skf
Publication of WO2015091456A1 publication Critical patent/WO2015091456A1/fr

Links

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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/064—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces the packing combining the sealing function with other functions
    • 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
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/10—Formation of a green body
    • B22F10/14—Formation of a green body by jetting of binder onto a bed of metal powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/10—Formation of a green body
    • B22F10/16—Formation of a green body by embedding the binder within the powder bed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/10—Formation of a green body
    • B22F10/18—Formation of a green body by mixing binder with metal in filament form, e.g. fused filament fabrication [FFF]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/20—Direct sintering or melting
    • B22F10/25—Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/20—Direct sintering or melting
    • B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/10—Processes of additive manufacturing
    • B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
    • B29C64/124—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
    • B29C64/129—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask
    • B29C64/135—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask the energy source being concentrated, e.g. scanning lasers or focused light sources
    • 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
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
    • 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
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
    • F16C33/7833—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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/324—Arrangements for lubrication or cooling of the sealing itself
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/10—Formation of a green body
    • B22F10/12—Formation of a green body by photopolymerisation, e.g. stereolithography [SLA] or digital light processing [DLP]
    • 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
    • F16C2223/46—Coating surfaces by welding, e.g. by using a laser to build a layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Definitions

  • the invention relates to a seal for sealing rolling elements of a bearing or for sealing linear moving elements of an actuator from environmental influence.
  • the invention further relates to a bearing and to a method of producing the seal.
  • Additive manufacturing or more commonly called 3D printing is a known production technique in which a three-dimensional solid object is generated from a digital model.
  • the process of additive manufacturing starts with generating the digital model via any known digital modeling methods, such as using a CAD program.
  • the digital model is divided into slices in which each slice indicates for this layer of the digital model where the printed material should be located.
  • the individual slices are sequentially fed into an additive manufacturing tool or 3D printer which deposits the material according to the individual slices and as such generates the complete three- dimensional solid object layer by layer.
  • One of the objects of the invention is to provide a seal for a bearing or an actuator, which seal has location dependent properties.
  • a first aspect of the invention provides a seal for sealing rolling elements of a bearing or for sealing linear moving elements of an actuator from environmental influence.
  • a second aspect of the invention provides a bearing, while a third aspect of the invention provides a method of producing the seal.
  • the seal in accordance with the first aspect of the invention has a seal side and an environment side, the seal comprising a first material and a second material, wherein the first material is printed via an additive manufacturing process and has different properties compared to the second material, and
  • the first material is a hydrophobic or oleophobic material when configured on the environment side.
  • material properties for sealing on the seal side may advantageously be different compared to material properties at the remainder of the seal.
  • Known methods to apply such specific material locally often require, for example, masking a part of the seal and, for example, coating only the unmasked parts with the specific material.
  • such production methods are relatively labor intense and expensive and often rather inaccurate.
  • the coating processes often require a specific temperature or a deposition chamber which further imposes significant limitations on the suitability of such coating solutions for constituting different parts of the seal.
  • the first material may relatively easily be applied locally by the printing process. This reduces the labor intensive masking steps and allows depositing the first material only at the locations where it is actually required.
  • hydrophobic material for the first material when the first material, in use is configured on the environment side contributes to keeping water and moisture away from any rolling elements and away from the inside (that is, the seal side) of the bearing to reduce corrosion of elements inside the bearing.
  • the second material is printed via an additive manufacturing process and has different properties compared to the first material.
  • a major part of the seal may be constituted of printed material, being either the first material or the second material.
  • printed material being either the first material or the second material.
  • An advantage of a seal which is produced from printed material is that it provides a high degree of freedom in the seal geometry and the possibility of placing the needed materials only where they are needed and not across the bulk of the seal. The additional freedom comes from the fact that the geometrical distribution of the elements that make up a seal is not limited as would be when using the traditional construction processes for the seal, e.g.
  • the surface of the seal may be built as part of the process to build the whole seal. This further enables to optimize or tune surface roughness, wetting, heat exchange and other performance parameters without having additional processes to control these performance parameters. All may be done in a single additive
  • the second material is a hydrophobic material when configured on the environment side, and the second material is an oleophilic material when configured at the seal side. So in such an embodiment, any of the first material or second material may be an oleophilic material when facing the rolling elements, and any of the first material or second material may be a hydrophobic material when facing away from the rolling elements.
  • the seal comprises a functionally graded interface layer at one of the interfaces between the first material and the second material, and a composition of the functionally graded interface layer is configured to gradually change from the first material via a mixture of the first material and the second material to the second material.
  • a composition of the functionally graded interface layer is configured to gradually change from the first material via a mixture of the first material and the second material to the second material.
  • the first material may be a a low-friction material and/or a self-lubricating material.
  • Such low-friction materials may enable noise reduction of the bearing comprising the seals according to the invention.
  • Self-lubricant materials may be rather difficult to apply locally and may be rather difficult to apply in a relatively homogeneous layer. Furthermore, these self-lubricant materials are also relatively expensive. Using this additive manufacturing technique, the self-lubricating material may be applied exactly locally there where it is needed and at a layer thickness as required. This results in a good local concentration of the self-lubricant material in a cost-effective manner.
  • Seals are constructed and designed to generate a film (or layer) of lubricant (oil) between them and another moving body.
  • the film is built dynamically when the parts are moving relative to each other, which means that during the non-steady states (accelerations, start-ups, etc.) the film is either perturbed, destroyed or not yet created. So at these moments of acceleration or start-up of the movement most wear takes place.
  • the ability to have self-lubricated and/or hydrophilic materials ensures lubricity at the seal lip in any condition. So adding self-lubricated materials as the first material at the contact area between the seal and any body moving relative to the seal would enhance friction performance and reduce wear.
  • Avoiding wear is important because wear allows contaminants (water/dust) to enter into the bearing leading to most of the life-reducing damage. From an environmental point of view, a damaged seal will leak and lead to oil/grease getting outside the intended volume and contaminate the environment.
  • gearboxes have bearing units which are not lubricated by the same oil used to lubricate the gear wheels.
  • a seal according to the invention may be used to separate two different lubricants.
  • Such a seal may have, for example, an oleophilic material facing the inside (seal side) of the bearing, and an oleophobic material facing the outside (environment side) of the bearing.
  • the low-friction material is selected from a list comprising graphite, nano-tubes, fullerenes, C60 and other carbon structures, shearable particles, resins, specific polymers/elastomers.
  • the oleophilic material is selected from a list comprising polystyrene, silicone and its rubbers, and kapok (fiber).
  • the self-lubricating material is selected from a list comprising graphite and nano-tubes.
  • the second material comprises a hollow structure.
  • a hollow structure may be used to reduce the weight of the seal.
  • the hollow structure may create space without the need for additional volume.
  • this hollow structure for example, created during the printing of the seal in the additive manufacturing process, may now be used for other functionalities, such as the containing of lubricants or sensors or even built-in batteries.
  • the hollow structure comprises an opening towards the rolling element.
  • the lubricant may be delivered to the rolling elements from the hollow structure in use.
  • the hollow structure may also comprise a sensor and the opening towards the rolling element may generate a connection to the lubricants near the rolling element and provide an indication of the quality of the lubricant near the rolling element. This may, for example, be used to monitor the condition of the bearing and only start, for example, maintenance work when really necessary - for example, resulting from parameters measured by the sensor.
  • the hollow structure in use, comprises a lubricant.
  • the seal is constituted of printed material comprising the first material and the second material, and the seal is produced by printing the printed material around a building block of the bearing.
  • building block may, for example, be the rolling elements or the cage, or even the inner ring, outer ring or both.
  • Seals often have to be joined together to form a closed the seal around the bearing.
  • the seal may have a weaker construction or wear at the rolling elements.
  • the seal is printed around the rolling elements which prevents any weakness in the construction and prevents increased local wear.
  • clearance between the rolling elements, the cage and the seal are often derived from the mounting compromise which is required when the seal is built separately and mounted later.
  • the bearing in accordance with the second aspect of the invention comprises the seal according to the invention.
  • the method in accordance with the third aspect of the invention comprises a step of: printing the first material onto the second material via the additive manufacturing process.
  • This printing process enables that the first material may be deposited at a location on the seal where it is required.
  • the use of the additive manufacturing process allows accurate dosage of the first material, which may result in a reduction of cost.
  • the method further comprises the step of: printing the second material via the additive manufacturing process.
  • the step of printing the first material and/or the second material comprises printing the printed material around the building blocks of the bearing.
  • the additive manufacturing process is selected from a list comprising stereolithography, selective laser sintering, laminated object manufacturing, fused deposition modeling, selective binding, laser engineering net shaping, photo polymerization and selective electron beam sintering, and 3D nesting.
  • Fig. 1 shows a cross-sectional view of a first embodiment of a seal for a bearing according to the invention
  • Fig. 2A shows a cross-sectional view of a second embodiment of the seal for a bearing according to the invention
  • Fig. 2B shows a partial cross-sectional view of a third embodiment of the seal
  • Fig. 3 shows a plan view of a bearing according to the invention
  • Fig. 4A shows a first embodiment of an additive manufacturing tool in which a liquid resin is used for applying the printed material in the additive manufacturing process
  • Fig. 4B shows a second embodiment of the additive manufacturing tool in which a liquid resin is dispensed from a dispenser for applying the printed material in the additive manufacturing process
  • Fig. 5A shows a third embodiment of the additive manufacturing tool in which the material is granulated into small solid particles which are used for applying the printed material in the additive manufacturing process
  • Fig. 5B shows a fourth embodiment of the additive manufacturing tool in which the granulated solid material is dispensed from a dispenser for applying the printed material in the additive manufacturing process
  • Fig. 6 shows a fifth embodiment of the additive manufacturing tool in which a melted plastic material is dispensed for applying the printed material in the additive manufacturing process.
  • Fig. 1 shows a plan view of a first embodiment of a seal 100 for a bearing 700 (see Fig. 3) according to the invention.
  • Such seals 100 are used in bearings 700 to protect the internal elements of the bearing 700 from environmental influences, such as moisture and water.
  • the seals 100 are used to enclose lubricants inside the bearing 700.
  • Such seals have a seal side, on the inside of the bearing or actuator and hence facing the rollers in a roller bearing, and an environment side, on the outside of the bearing or actuator and hence facing the environment.
  • the seal 100 according to the invention and as shown in Fig. 1 comprises a first material 1 10 which is deposited or printed onto a second material 120 of the seal 100, for example, at a location where, in use the rolling elements (not shown) and/or the cage (not shown) could at least occasionally contact the seal 100.
  • the first material 1 10 may also be deposited at more positions than shown in Fig. 1 without departing from the scope of the invention.
  • the first material 1 10 may, for example, be a self-lubricant material or an oleophilic material for ensuring that the lubrication of the rolling elements is provided for. This first material 1 10 may be applied, for example, only at the contact surface (not indicated) between the rolling elements or cage and the seal 100.
  • the second material 120 may be prefabricated via any other production process, for example, an injection molding process or a casting process. In such a situation, the first material 1 10 may be printed on top of the second material 120. Alternatively, the second material 120 may also be printed via the additive
  • the deposition of the first material 1 10 on the second material 120 may generate a functionally graded interface layer 230 (see Fig. 2A).
  • the composition of such a functionally graded interface layer 230 is configured to gradually change from the first material 1 10 via a mixture of the first material 1 10 and the second material 120 to the second material 120.
  • a benefit of such functionally graded interface layer 230 is that the bonding between the first material 1 10 and the second material 120 is relatively strong.
  • the second material 120 is different from the first material 1 10.
  • the first material 1 10 may be oleophilic material having a predefined wetting behavior for ensuring that sufficient lubricant is present at the interface between the seal 100 and the rolling element or cage.
  • the second material 120 may, for example, be hydrophobic to ensure that water and moisture is banned from the seal 100 to reduce corrosion of the rolling elements and the raceways inside the bearing 300.
  • the second material 120 may comprise a hollow structure 350 (shown in Fig. 2B). Such a hollow structure 350 may generate additional space inside the bearing 700 without the need for more volume. Such a hollow structure 350 may be used to contain lubricant which may be deposited to the interface between the seal 100 and the rolling elements or cage via an opening 355 (again shown in Fig. 2C).
  • the hollow structure 350 may comprise other elements, such as sensors (not shown) or batteries (not shown) to feed such sensors.
  • sensors such as sensors (not shown) or batteries (not shown) to feed such sensors.
  • the inclusion of sensors in the hollow structure 350 allows measurements inside the seal 100 or bearing 700 to monitor parameters, for example, for determining maintenance needs of the bearing 700.
  • the first material 1 10 and the second material 120 may be interchanged (not shown) such that the first material 1 10 faces away from the rolling elements or cage (and is therefore located on the environment side) and the second material 120 faces the rolling elements or cage (and is therefore located on the seal side).
  • the first material 1 10 may be hydrophobic and the second material 120 may be oleophilic.
  • the seal 100 comprises a frame 140, for example, a metal frame 140.
  • This metal frame 140 acts as a spring-fit for securing the seal 100 to a flange (not shown) of an outer ring 710 (see Fig. 3) of the bearing 700.
  • the seal 100 shown in Fig. 1 further comprises an O-ring 160 to control a force at which the seal 100 contacts a flange (not shown) of an inner ring 720 (see Fig. 3). In use the flange of the inner ring 720 rotates relative to the seal 100.
  • Fig. 2A shows a cross-sectional view of a second embodiment of the seal 200 for the bearing 700 according to the invention.
  • the seal 200 as shown in Fig. 2A also comprises the first material 210, printed on the second material 220.
  • This second material 220 is also printed material and at the interface between the first material 210 and the second material 220 the functionally graded interface layer 230 is shown.
  • the functionally graded interface layer 230 is configured to gradually change from the first material 210 via a mixture of the first material 210 and the second material 220 to the second material 220 to achieve an improved bonding between the first material 210 and the second material 220.
  • the seal 200 comprises a frame 240, for example, a metal frame 240 which acts as a spring-fit for securing the seal 200 to the flange (not shown) of the outer ring 710 (see Fig. 3) of the bearing 700.
  • a frame 240 for example, a metal frame 240 which acts as a spring-fit for securing the seal 200 to the flange (not shown) of the outer ring 710 (see Fig. 3) of the bearing 700.
  • Fig. 2B shows a partial cross-sectional view of a third embodiment of the seal 300 according to the invention.
  • the seal 300 comprises a second material 320 which is printed into a metal frame 340 which acts as a spring-fit for securing the seal 300 onto the bearing (700 in Fig. 3).
  • the seal 300 further comprises first material 310 printed on the second material 320 at a side of the seal 300 facing the rolling elements (not shown) or cage.
  • the O-ring 360 again is present to control the force at which the seal 300 contacts the flange (not shown) of an inner ring 720 of the bearing (see Fig. 3).
  • Printing the second material 320 onto the metal frame 340 also allows to include at some locations inside the second material 320 one or more hollow structures 350 as indicated in Fig.
  • Such a hollow structure 350 may, in use contain a lubricant which may be released toward the rolling elements or cage via an opening 355.
  • the hollow structure 350 may also comprise other elements such as a sensor (not shown) and/or a battery (not shown) or other energy storage facility - enabling to measure parameters useful to determine, for example, when the next maintenance would be due.
  • a sensor not shown
  • a battery not shown
  • other energy storage facility enabling to measure parameters useful to determine, for example, when the next maintenance would be due.
  • other parameters providing other intelligence about the system or condition of the bearing 700 or its building blocks may also be measured by the sensor.
  • Fig. 3 shows a plan view of a bearing 700 according to the invention.
  • the bearing 700 shown in Fig. 3 is a ball-bearing 700 comprising rolling elements (hidden behind the seal 100) being spheres.
  • the bearing 700 comprises an inner ring 720, an outer ring 710 and a cage (hidden behind the seal 100).
  • the interior of the bearing 700 comprising the raceways of the inner ring 720 and the outer ring 710, the rolling elements and the cage are sealed from environmental influences via the seal 100 according to the embodiments of the invention.
  • Fig. 4A shows a first embodiment of an additive manufacturing tool 400 in which a liquid resin 450 is used for applying the printed material 460 in the additive manufacturing process.
  • Such additive manufacturing tool 400 comprises resin container 430 comprising the liquid resin 450. Inside the resin container 430 a platform 470 is positioned which is configured to slowly move down into the resin container 430.
  • the additive manufacturing tool 400 further comprises a laser 410 which emits a laser beam 412 having a wavelength for curing the liquid resin 450 at the locations on the printed material 460 where additional printed material 460 should be added.
  • a re- coating bar 440 is drawn over the printed material 460 before a new layer of printed material 460 is to be applied to ensure that a thin layer of liquid resin 450 is on top of the printed material 460.
  • Emitting using the laser 410 those parts of the thin layer of liquid resin 450 where the additional printed material 460 should be applied will locally cure the resin 450.
  • the laser beam 412 is reflected across the layer of liquid resin 450 using a scanning mirror 420.
  • the platform 470 lowers the printed material 460 further into the liquid resin 450 to allow the re-coating bar 460 to apply another layer of liquid resin 450 on top of the printed material 460 to continue the additive manufacturing process.
  • Fig. 4B shows a second embodiment of the additive manufacturing tool 401 in which a liquid resin 450 is dispensed from a dispenser 405 or print head 405 for applying the printed material 460 in the additive manufacturing process.
  • the additive manufacturing tool 401 again comprises the resin container 430 comprising the liquid resin 450 which is fed via a feed 455 towards the print head 405.
  • the print head 405 further comprises a print nozzle 415 from which droplets of liquid resin 450 are emitted towards the printed material 460. These droplets may fall under gravity from the print head 405 to the printed material 460 or may be ejected from the print nozzle 415 using some ejection mechanism (not shown) towards the printed material 460.
  • the print head 405 further comprises a laser 410 emitting a laser beam 412 for immediately curing the droplet of liquid resin 450 when it hits the printed material 460 to fix the droplet of liquid resin 450 to the already printed material 460.
  • the printed material 460 forming a solid object may be located on a platform 470.
  • Fig. 5A shows a third embodiment of the additive manufacturing tool 500 in which the material is granulated into small solid particles 550 which are used for applying the printed material 560 in the additive manufacturing process.
  • the additive manufacturing tool 500 also known as a Selective Laser Sintering tool 500, or SLS tool 500 comprises a granulate container 530 comprising the granulated small solid particles 550.
  • the printed material 560 is located again on a platform 570 and is completely surrounded by the granulated small solid particles 550. Lowering the platform allows a granulate feed roller 540 to apply another layer of granulated solid particles 550 on the printed material 560.
  • the platform 570 moves down further to allow a next layer of granulated solid particles 550 to be applied via the granulate feed roller 540 to continue the next layer in the additive manufacturing process.
  • Fig. 5B shows a fourth embodiment of the additive manufacturing tool 501 or SLS tool 501 in which the granulated solid material 550 is dispensed from a dispenser 505 or print head 505 for applying the printed material 560 in the additive manufacturing process.
  • the additive manufacturing tool 501 again comprises the granulate container 530 comprising the granulated solid particles 550 which are fed via a feed 555 towards the print head 505.
  • the print head 505 further comprises a print nozzle 515 from which granulated solid particles 550 are emitted towards the printed material 560.
  • These solid particles 550 may fall under gravity from the print head 505 to the printed material 560 or may be ejected from the print nozzle 515 using some ejection mechanism (not shown) towards the printed material 560.
  • the print head 505 further comprises a laser 510 emitting a laser beam 512 for immediately melting or sintering the solid particle 550 when it hits the printed material 560 to fix the solid particle 550 to the already printed material 560.
  • the printed material 560 forming a solid object may be located on a platform 570.
  • Fig. 6 shows a fifth embodiment of the additive manufacturing tool 600 in which a melted plastic material 650 is dispensed for applying the printed material 660 in the additive manufacturing process.
  • the additive manufacturing tool 600 shown in Fig. 6 is also known as Fused Deposition Modeling tool 600 or FDM tool 600.
  • a plastic filament 630 is fed into a dispenser 610 or melter 610 via a filament feeder 640.
  • the dispenser 610 or melter 610 comprises an extrusion nozzle 615 for melting the plastic filament 630 to form a droplet of melted plastic material 650 which is applied to the printed material 660 where it hardens and connects to the already printed material 660.
  • the dispenser 610 may be configured and constructed to apply the droplet of melted plastic 650 to the printed material 660 under gravity or via an ejection mechanism (not shown).
  • the additive manufacturing tool 600 further comprises a positioning system 620 for positioning the dispenser 610 across the printed material 660.
  • the invention provides a multimaterial and multifunction seal
  • the invention further provides the bearing and a method of producing the seal.
  • the seal comprises a first material 1 10 and a second material 120, the first material 110 being printed via an additive manufacturing process and having different properties compared to the second material.
  • the first material is a hydrophobic or oleophobic material when the first material is configured on the environment side of the seal and therefore configured, in use, to face away from the rolling elements. Using such first material allows applying the first material at a location where it is actually needed.
  • any reference signs placed between parentheses shall not be construed as limiting the claim.
  • Use of the verb "comprise” and its conjugations does not exclude the presence of elements or steps other than those stated in a claim.
  • the article "a” or “an” preceding an element does not exclude the presence of a plurality of such elements.
  • the invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the device claim enumerating several means, several of these means may be embodied by one and the same item of hardware. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.
  • Inner ring 720 Granulate material 550

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)

Abstract

L'invention concerne un joint multifonction et en multiples matériaux (100) pour un palier ou un actionneur. L'invention concerne de plus le palier et une méthode de production du palier. Le joint comprend un premier matériau (110) et un deuxième matériau (120), le premier matériau (110) étant imprimé par un processus de fabrication additive et ayant des propriétés différentes de celles du deuxième matériau. Le premier matériau est un matériau hydrophobe ou oléophobe lorsqu'il est placé du côté environnement du joint.
PCT/EP2014/077922 2013-12-18 2014-12-16 Joint en multiples matériaux, palier, et méthode de production WO2015091456A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1322418.3A GB2521394A (en) 2013-12-18 2013-12-18 Multi-material seal, bearing and method of producing
GB1322418.3 2013-12-18

Publications (1)

Publication Number Publication Date
WO2015091456A1 true WO2015091456A1 (fr) 2015-06-25

Family

ID=50071022

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/EP2014/077922 WO2015091456A1 (fr) 2013-12-18 2014-12-16 Joint en multiples matériaux, palier, et méthode de production
PCT/EP2014/077973 WO2015091491A1 (fr) 2013-12-18 2014-12-16 Joint à matériaux multiples, support et procédé de production

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/077973 WO2015091491A1 (fr) 2013-12-18 2014-12-16 Joint à matériaux multiples, support et procédé de production

Country Status (2)

Country Link
GB (1) GB2521394A (fr)
WO (2) WO2015091456A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014220872A1 (de) * 2014-10-15 2016-04-21 Christof Diener Ölanziehendes Lager mit oberflächenmodifiziertem Teil aus nichtrostendem Wälzlagerstahl
CN106003712B (zh) * 2016-05-18 2017-12-12 太原科技大学 一种用于増材制造的辊压装置
DE102016222409A1 (de) * 2016-11-15 2018-01-04 Schaeffler Technologies AG & Co. KG Verfahren zur Herstellung eines ringförmigen Wälzlagerdichtelements
DE102016222410A1 (de) * 2016-11-15 2018-01-04 Schaeffler Technologies AG & Co. KG Verfahren zur Herstellung eines ringförmigen Schmiermittelzuführbauteils
DE102017208285B4 (de) * 2017-05-17 2020-08-06 Trelleborg Sealing Solutions Germany Gmbh Dichtring mit 3D-Druck Inlay
US11536110B2 (en) 2018-02-27 2022-12-27 Halliburton Energy Services, Inc. Sealing element
DE102018222108A1 (de) * 2018-12-18 2020-06-18 MTU Aero Engines AG Verfahren zum herstellen einer dichtungsvorrichtung
US20220282790A1 (en) * 2019-12-09 2022-09-08 Parker-Hannifin Corporation Sealing elements with integrated intrinsic energizers
CN111361188A (zh) * 2020-03-27 2020-07-03 大连三环复合材料技术开发股份有限公司 金属塑料复合材料滑动轴承及其制造方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008058087A1 (de) * 2008-11-19 2010-05-20 Sew-Eurodrive Gmbh & Co. Kg Gehäuse und Dichtelement
WO2010105782A1 (fr) * 2009-03-19 2010-09-23 Ab Skf Dispositif d'étanchéité
DE102010019945A1 (de) * 2010-05-08 2011-11-10 Aktiebolaget Skf Dichtungsanordnung
DE102010034962A1 (de) * 2010-08-20 2012-02-23 Schaeffler Technologies Gmbh & Co. Kg Lagerbestandteil, insbesondere Wälzlagerkäfig, sowie Verfahren zu dessen Herstellung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9752681B2 (en) * 2010-05-07 2017-09-05 Parker-Hannifin Corporation Precision formed article and method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008058087A1 (de) * 2008-11-19 2010-05-20 Sew-Eurodrive Gmbh & Co. Kg Gehäuse und Dichtelement
WO2010105782A1 (fr) * 2009-03-19 2010-09-23 Ab Skf Dispositif d'étanchéité
DE102010019945A1 (de) * 2010-05-08 2011-11-10 Aktiebolaget Skf Dichtungsanordnung
DE102010034962A1 (de) * 2010-08-20 2012-02-23 Schaeffler Technologies Gmbh & Co. Kg Lagerbestandteil, insbesondere Wälzlagerkäfig, sowie Verfahren zu dessen Herstellung

Also Published As

Publication number Publication date
WO2015091491A1 (fr) 2015-06-25
GB2521394A (en) 2015-06-24
GB201322418D0 (en) 2014-02-05

Similar Documents

Publication Publication Date Title
WO2015091456A1 (fr) Joint en multiples matériaux, palier, et méthode de production
EP3084239B1 (fr) Cage multi-materiaux et procédé de fabrication additive de la cage
US10436252B2 (en) Building block for a mechanical construction
US8814437B2 (en) Roller bearing cage and method for the production thereof
US10422385B2 (en) Ring for a bearing, an inner ring, an outer and ring, a bearing
WO2015091728A1 (fr) Élément roulant et palier
US10093062B2 (en) Building block for a mechanical construction
US10323689B2 (en) Slide member and method for producing same
WO2015091729A1 (fr) Bloc de construction pour structure mécanique conçu pour guider un lubrifiant magnétique et son procédé de fabrication par fabrication additive
WO2005116468A1 (fr) Appuis à glissière haute précision
FR2509814A1 (fr) Procede pour fabriquer un joint a rotule et joint a rotule ainsi obtenu
GB2528037A (en) Building element for a bearing, bearing and method of producing
JP6608224B2 (ja) 摺動部材の製造方法
WO2015091723A2 (fr) Procédé permettant de produire une bague de chemin de roulement, une bague interne ou une bague externe, et bague de chemin de roulement
CN101321963B (zh) 具备滑动轴承的轴承装置
WO2016043284A1 (fr) Élément coulissant et procédé pour le produire
WO2015091520A2 (fr) Procédé permettant de produire une bague de chemin de roulement, bague interne ou bague externe et bague de chemin de roulement
CN117677785A (zh) 灵活的结构
CN117881892A (zh) 飞溅环
JP2010190399A (ja) 転がり軸受
JP2009002474A5 (fr)

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14812252

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14812252

Country of ref document: EP

Kind code of ref document: A1