[go: up one dir, main page]

WO2015193494A1 - Piston de déroulage pour ressort pneumatique - Google Patents

Piston de déroulage pour ressort pneumatique Download PDF

Info

Publication number
WO2015193494A1
WO2015193494A1 PCT/EP2015/063868 EP2015063868W WO2015193494A1 WO 2015193494 A1 WO2015193494 A1 WO 2015193494A1 EP 2015063868 W EP2015063868 W EP 2015063868W WO 2015193494 A1 WO2015193494 A1 WO 2015193494A1
Authority
WO
WIPO (PCT)
Prior art keywords
rolling piston
cup
shaped
air spring
forming
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.)
Ceased
Application number
PCT/EP2015/063868
Other languages
German (de)
English (en)
Inventor
August WONISCH
Boris RECEK
Peter MERLINI
Zdravko BRATUSA
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.)
Radkersburger Metallwarenfabrik GmbH
Original Assignee
Radkersburger Metallwarenfabrik 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 Radkersburger Metallwarenfabrik GmbH filed Critical Radkersburger Metallwarenfabrik GmbH
Priority to EP15731888.2A priority Critical patent/EP3158216A1/fr
Publication of WO2015193494A1 publication Critical patent/WO2015193494A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
    • F16F9/04—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall
    • F16F9/05—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall the flexible wall being of the rolling diaphragm type
    • F16F9/057—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall the flexible wall being of the rolling diaphragm type characterised by the piston
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14—Spinning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/28—Deep-drawing of cylindrical articles using consecutive dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2226/00—Manufacturing; Treatments
    • F16F2226/04—Assembly or fixing methods; methods to form or fashion parts
    • F16F2226/047—Sheet-metal stamping

Definitions

  • Uncoil can be used for an air spring
  • the invention relates to a method for producing a rolling piston for an air spring, a rolling piston for an air spring, an air spring and a device for producing a rolling piston for an air spring.
  • DE 10018238 discloses a rolling piston for air spring systems, wherein the rolling piston is designed in the manner of a tube and consists of aluminum.
  • the rolling piston is in this case a longitudinally welded pipe, which consists of an aluminum alloy, wherein the tube without filler metals
  • Air spring provide, even in long-term operation and under rough
  • a method of manufacturing a rolling piston for an air spring wherein in the method a plate-shaped blank is provided and the blank is provided for forming a longitudinally weld-free three-dimensional
  • a rolling piston for an air spring having a three-dimensionally shaped longitudinally weld-free body having a cavity
  • Air spring has a rolling piston with the features described above and an air bellows mounted on the rolling piston.
  • the invention is an apparatus for producing a rolling piston for a
  • Air spring provided, wherein the device comprises a feed device for feeding a plate-shaped blank and a forming device for multiple forming the plate-shaped blank to form a
  • a rolling piston for an air spring is produced starting from a plate-shaped blank, a so-called board, which is available at low cost.
  • the complete rolling piston can then be produced without the need for forming a longitudinal weld seam for this purpose.
  • conventional rolling piston for air springs in which the formation of longitudinal welds as
  • inventive rolling piston even in long-term operation consistently high quality and reliability.
  • a longitudinal weld is understood to mean a seam formed by welding, which runs along or substantially along a longitudinal axis (in particular a rotation axis) of a hollow body which forms the rolling piston.
  • a longitudinal axis in particular a rotation axis
  • an air bellows can be circumferentially attached during normal operation of the associated air spring.
  • the entire rolling piston can be formed without welding seams. According to such
  • the rolling piston can get along completely without welds, ie. apart from the freedom of longitudinal welds also be free of ring welds or other welds. Then the rolling piston is particularly good against unwanted corrosion or
  • plate-shaped (in particular flat) blank (especially flat) aluminum disc can be used. This can be for example from a
  • Aluminum coil to be punched out For example, as a plate-shaped blank, a metal disc having a thickness in a range between 1 mm and 3 mm, in particular, with a thickness of 2 mm may be used.
  • Ronde in particular a einstoffig trained Ronde be used.
  • a Ronde can be understood a round plate-shaped blank, the shape of which is particularly well suited to a Hollow body, in particular a rotationally symmetrical body with circular cross-sections, form.
  • Such a Ronde like any other plate-shaped blank, are punched out of a coil and thus be produced inexpensively and by simple means.
  • Such deep drawing can in particular a
  • the metallic blank (which may be a blank, foil, plate, board or board) in a one-sided open hollow body with no or substantially no intentional change in wall thickness. Even in the first deep-drawing process, the formed blank receives the basic shape of the rolling piston as a rotating body.
  • the method may further comprise at least one second deep-drawing process in a press, wherein in the at least one further deep-drawing process, the cup-shaped structure is partially converted into different outer diameters.
  • Such further deep-drawing (which may have one or more deep-drawing stages, for example three further deep-drawing stages) designates a tensile pressure forming of the previously formed, preferred one-sided open hollow body into one of further reduced cross-section, again without or in
  • cup-shaped structure can be drawn clearly, whereby by means of repeated
  • Forming further shape features are created in the structure.
  • Thermoforming processes can be carried out in a press. For example, deep drawing can be done per stroke.
  • the reshaped cup-shaped structure may be heated and followed Be subjected to cooling sequence to refresh the stretchability of the already repeatedly deep drawn material.
  • the reshaped cup-shaped structure may be heated and followed Be subjected to cooling sequence to refresh the stretchability of the already repeatedly deep drawn material.
  • Formability of aluminum can be made use of. After a few
  • the material of the structure can be made supple, stretchable or Tiefziehschreib again.
  • the heating may, for example, to a temperature in a range between 100 ° C and 400 ° C, in particular in a range between 250 ° C and 350 ° C.
  • Heating and cooling cycle are subjected to the deformed structure of at least a third deep drawing process to form therein at least one further portion with locally changed outer diameter.
  • the structure which has already been repeatedly deep-drawn, may be subjected to a further deep-drawing process in order to form further shape features in the structure.
  • thermoforming processes can according to an embodiment with a widening and a
  • Beading process can be combined.
  • a rolling piston can be produced.
  • Through hole are cut off. After a desired number of thermoforming processes have taken place, optionally interrupted by one or more annealing cycles, the still closed bottom of the reshaped structure can be cut off to open both sides
  • an end portion of the reshaped cup-shaped structure may be locally expanded to include a receiving cavity for receiving a sealing ring or the like
  • a portion of the reshaped structure may be prepared to subsequently attach a seal, for example of plastic.
  • the individual forming stages of the manufacturing process can be selected from deep drawing stages, expansion stages and bead forming stages. This can be a rolling piston
  • the deformed structure along a portion of its longitudinal extent one
  • Rotational pressing process are subjected to locally reshape the structure in a single clamping and remove material on the outside.
  • turning and pressing in a common clamping of the Workpiece for example, after performing some or all
  • the turning and pressing described preferably takes place only insofar simultaneously (or quasi simultaneously) or in a common process, as it takes place in a common tool clamping. However, it is preferably always at any time only a tool (turning or spinning tool) with the workpiece in contact. Preferably, heating takes place only during the pressing, not during the rotation.
  • the Drehdrückprozedur be performed by means of a lathe, in particular under heating of the spin-pressed portion of the structure.
  • the device for producing the rolling piston can be equipped with a heating device
  • Tool clamping for pressing and turning with heating by means of the heating device locally deform the structure by pressing and remove material from the structure while maintaining the common tool clamping by means of rotation.
  • This heating can take place by means of a heating device which locally heats the section of the structure to be processed and thereby makes it capable of being pressed. It is preferably only one each
  • the lathe can be located in a production line downstream of the
  • Forming device may be arranged.
  • the device for producing rolling-off pistons may alternatively or additionally comprise additional devices in order to implement the individual method steps described in this application.
  • a clamping contour (to which an air bellows of the air spring can be clamped) and / or a rolling contour (on which an air bellows of the air spring can roll) of the rolling piston are formed.
  • a clamping contour of the rolling piston to be produced can be effectively processed by means of rotary pressing in such a way that a type of thread is formed, at which jamming of the pneumatic bellows is effectively possible.
  • the execution of the described rotation pressing procedure can be carried out, for example, after completion of all deep drawing stages.
  • the reshaped cup-shaped structure while heating the same one
  • a different wall thickness of the fabricated structure can be adjusted.
  • connection sleeve can be welded to a lateral surface of the reshaped structure.
  • Such connection sleeves can serve for example for connecting valves.
  • the formation of a connection sleeve does not lead to the formation of a particularly susceptible longitudinal weld seam, but at most sections to the formation of annular seams with a relatively small diameter.
  • the rolling piston may comprise or consist of aluminum.
  • Aluminum is for all the processes described above, ie. especially for repeated deep drawing
  • Aluminum blanks can be punched out of coils at a reasonable cost and, thanks to their low weight, are also ideal for the automotive industry.
  • the air spring may further comprise an outer guide which at least partially encloses the rolling piston, wherein the outer guide longitudinally free of welds, in particular completely free of welds, may be formed. If not only the
  • FIGS. 1 to 8 are cross-sectional views of different three-dimensional structures obtained from a plate-shaped blank during a method of manufacturing a rolling piston for an air spring by forming according to an exemplary embodiment of the invention.
  • Figure 8A shows a cross-sectional view of a rolling piston for a
  • Air spring according to an exemplary embodiment of the invention.
  • Figure 9 shows an apparatus for carrying out a method of manufacturing a rolling piston for an air spring by means of reshaping from a plate-shaped blank according to an exemplary Embodiment of the invention, wherein by means of this device, the three-dimensional structures shown in Figure 1 to Figure 8 and the rolling piston shown in Figure 8A can be formed.
  • FIGS. 10 to 17 are cross-sectional views of different three-dimensional structures obtained from a plate-shaped blank during a method of manufacturing a rolling piston for an air spring by forming according to another exemplary embodiment of the invention.
  • FIG. 18 shows another apparatus for carrying out a method for producing a rolling piston for an air spring by means of reshaping from a plate-shaped blank according to an exemplary embodiment of the invention, wherein the device can be used to form the three-dimensional structures shown in FIGS. 10 to 17.
  • FIGS. 19 to 42 show different structures used during a process for producing a rolling piston for a
  • Air spring according to yet another exemplary embodiment of the invention can be obtained.
  • FIG. 43 shows a flowchart according to a method for manufacturing a rolling piston for an air spring according to an exemplary embodiment of the invention.
  • Air spring systems according to exemplary embodiments can be used in particular in the automotive sector, for example for suspension in passenger cars.
  • pressurized air is used as the spring element.
  • a component of such air spring systems can be used in particular in the automotive sector, for example for suspension in passenger cars.
  • pressurized air is used as the spring element.
  • Air spring system is the rolling piston, on the outer surface of an air bellows (for example made of rubber) unrolls when the air spring system is stressed and performs a spring action.
  • an air spring system of the rolling piston serves as a connecting part to an axis, on the other he ensures the sealing of the attached air bellows and together with a lid for guiding it during compression.
  • a rolling piston according to an exemplary embodiment is a rotationally symmetrical component, in particular
  • the piston geometry is produced by deep drawing.
  • the technical advantage of such a rolling piston for an air spring is the
  • FIG. 1 to 8 show cross-sectional views of different three-dimensional structures 100, 200, 300, 400, 500, 600, 700, 800, starting from a round plate-shaped blank 950 (Ronde) during a process for producing a rolling piston for an air spring by means of forming can be obtained according to an exemplary embodiment of the invention.
  • FIG. 9 shows an associated device 900 for
  • the device 900 has seven forming stages 901 to 907, each of which is formed by means of deep drawing for forming a respective starting structure.
  • a movable feed device 908 is indicated schematically in FIG. 9, by means of which a blank can be fed to the forming stages 901 to 907 as a plate-shaped blank 950.
  • Between the fifth forming stage 905 and the sixth forming stage 906 is a
  • Cutting device 909 provided for cutting a bottom of a previously formed cup-shaped structure 500. Between individual forming stages 901 to 907, although not shown in FIG. 9, the formed structure 100, 200, 300, 400, 500, 600, 700, 800 may need one
  • Heating and cooling procedure to make the material of the blank made of aluminum again deep-drawable.
  • Forming the plate-shaped blank 950 in the first forming stage 901 is obtained.
  • FIG. 2 shows a further shaped cup-shaped structure 200, which by means of forming the cup-shaped structure 100 in the second Forming stage 902 is obtained. This reshaping increases the axial length of the cup-shaped structure 200 relative to the cup-shaped structure 100.
  • FIG. 3 shows a further shaped cup-shaped structure 300, which is obtained by means of forming the cup-shaped structure 200 in the third forming stage 903. This reshaping produces differently dilated local portions in the cup-shaped structure 300.
  • FIG. 4 shows a further shaped cup-shaped structure 400, which is obtained by means of forming the cup-shaped structure 300 in the fourth forming stage 904. This reshaping produces a further differently dilated local portion in the cup-shaped structure 400.
  • FIG. 5 shows a further reshaped cup-shaped structure 500, which is obtained by means of reshaping the cup-shaped structure 400 in the fifth forming stage 905. This reshaping straightens the topmost locally expanded section.
  • FIG. 6 shows a hollow body structure 600 which is open on both sides, in which the bottom has been cut off in relation to the cup-shaped structure 500.
  • FIG. 7 shows a further formed hollow body structure 700, which is obtained by means of forming the hollow body structure 600 in the sixth forming stage 906.
  • FIG. 8 shows a further formed hollow body structure 800, which is obtained by means of forming the hollow body structure 700 in the seventh forming stage 907.
  • Figure 8A shows a cross-sectional view of a rolling piston 850 for a
  • Air spring according to an exemplary embodiment of the invention.
  • a section 860 can be subjected to a rotary pressing process, in which the lathe on a lathe
  • Section 860 is machined so that in a common setting a kind of thread 862 by means of turning and a recess 864 by means of pressing is produced .
  • heating for example, by a
  • the depression 864 is generated under the influence of heat, after which it is rotated without the influence of heat.
  • the section 860 can then act as a clamping contour of the rolling piston 850, on which a not shown
  • Rubber bellows can be trapped.
  • an upper end portion of the rolling piston 850 may further be a support ring 870 made of steel and / or plastic used.
  • post-processing can likewise be carried out by means of rotation pressing. in the
  • the rolling piston 850 has no weld, in particular no longitudinal weld, since he exclusively by means of forming process and a material-removing
  • Figures 10 to 17 are cross-sectional views of different three-dimensional structures 1000, 1100, 1200, 1300, 1400, 1500, 1600, 1700 starting from a plate-like blank 950 during a process of making a rolling piston for an air spring by forming according to another example Embodiment of the invention can be obtained.
  • FIG. 18 shows an associated other device 900 for
  • the production method according to FIG. 10 to FIG. 18 differs from the production method according to FIG. 1 to FIG. 9 characterized in that the cutting of the bottom of the cup-shaped structure 1500 for forming a hollow body structure 1600 takes place after six forming stages instead of, as shown in Figure 1 to Figure 9, after five forming stages.
  • the structures produced according to FIG. 1 to FIG. 9 differ from those according to FIG. 10 to FIG. 18
  • Figures 19 through 42 show different structures obtained while performing a method of manufacturing a roll-off piston 850 for an air spring according to yet another exemplary embodiment of the invention.
  • an outer tube 2400 is formed, wherein Figure 25 is a connection between the outer tube 2400 and a
  • Inner tube 2500 shows.
  • FIGS. 19 to 23 show spatial views of structures 1900
  • a cup-shaped structure 1900 according to FIG. 19 is obtained by deep-drawing the plate-shaped blank 950.
  • a cup-shaped structure 2000 according to FIG. 20 is obtained starting from the cup-shaped structure 1900 by means of further deep-drawing.
  • the cup-shaped structure 2000 is subjected to lateral surface processing, and an opening 2110 is formed in the bottom of the cup.
  • the hollow body 2100 is machined such that the size of the opening 2110 is widened.
  • the hollow body 2300 according to FIG. 23 the hollow body 2200 becomes a further one
  • FIG. 25 shows a connection between the outer tube 2400 and the inner tube 2500 in the region of the clamping contour 862.
  • an air bellows (not shown) can be clamped to the clamping contour 862.
  • an inner tube 3300 is formed.
  • FIG. 26 shows a cup-shaped structure 2600 which is obtained by deep drawing from a plate-shaped blank 850.
  • a cup-shaped structure 2700 is shown, which is obtained by further deep-drawing from the cup-shaped structure 2600.
  • Fig. 28 a cup-shaped structure 2600 which is obtained by deep drawing from a plate-shaped blank 850.
  • FIG. 29 shows a cup-shaped structure 2900 which is obtained from the cup-shaped structure 2800 by means of further deep-drawing.
  • 2800, 2900 local sections are formed in the respective cup-shaped structure
  • FIG. 30 shows a cup-shaped structure 3000 which can be obtained from the cup-shaped structure 2900 by means of further processing.
  • the cup-shaped structure 3000 is widened (for example by means of
  • Piston section 3800 formed.
  • a plate-shaped blank 950 is subjected to a deep-drawing procedure.
  • cup-shaped structure 3400 in turn treated by deep drawing and under Formation of a through hole 3510 trimmed on top.
  • a further deep-drawing procedure is carried out.
  • a further deep-drawing procedure is carried out.
  • a further deep drawing procedure is carried out starting from the hollow body 3700 and a side hole 3810 is formed.
  • FIG. 39 shows a sleeve 3900 which can be used as a valve connection and thus can likewise be used to form the rolling piston 850.
  • FIG. 40, FIG. 41 and FIG. 42 show different views of a longitudinally welded seam-free rolling piston 850 which consists of the outer tube 2400, the inner tube 3300, the lower piston section 3800 and sleeves 3900
  • Inner tube 3300 the outer tube 2400 shown in Figure 24 (for example, thermally) compressed. Thereafter, the inner tube 3300 is welded to the outer tube 2400 at a weld 4100.
  • welding 4110 welded.
  • the lower piston section 3800 is welded to the inner tube 3300 at a weld 4120.
  • the sleeves 3900 as valve connections are then pressed in and welded to a weld 4130.
  • the rolling piston 850 according to an exemplary
  • FIG. 43 shows a flowchart 4300 according to a method for producing a rolling piston 850 for an air spring according to an exemplary embodiment of the invention.
  • a blank is punched out as a plate-shaped blank 950 for producing the rolling piston 850 from an aluminum coil.
  • the blank is then subjected to three successive deep-drawing processes, whereby a three-fold forming into a cup-shaped structure with various three-dimensional shape features.
  • the re-shaped cup-shaped structure is annealed for heating to 300 ° C and subsequent cooling to the initial temperature to rejuvenate the stretchability of the already three times deep drawn aluminum material of the formed blank. This makes the material re-stretchable or deep-drawable without running the risk of the aluminum material jumping.
  • the reshaped cup-shaped structure is subjected to another deep-drawing stage to provide further three-dimensional shape characteristics by material rearrangement.
  • Thermoforming stage again annealed the aluminum material of the reshaped cup-shaped structure as described with reference to block 4306.
  • the multi-shaped cup-shaped structure is flipped over and cut from its bottom freed. As a result, a rotationally symmetrical hollow body open on both sides is formed.
  • a bead (overhang) is then hammered into these rotationally symmetrical hollow bodies open on both sides.
  • the rotationally symmetrical hollow body open on both sides can subsequently be optionally trimmed in a peripheral machine in order to cut off any corners or overhangs of material caused by the deep drawing.
  • a clamping contour 862 can be clearly formed in the form of an external thread.
  • a rolling contour 880 of the rolling piston 850 to be produced can thereby also be formed.
  • a combined turning and pressing can take place in only one clamping on a lathe, so that at the same time a removal of material for forming the clamping contour 862 and / or the rolling contour 880 can take place by turning and forming by pressing with the turning tool.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Fluid-Damping Devices (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un piston de déroulage destiné à un ressort pneumatique, selon lequel on prépare une ébauche en forme de plaque, et l'ébauche est déformée pour produire un piston de déroulage tridimensionnel sans joint soudé longitudinal, comprenant un espace vide délimité par ledit piston.
PCT/EP2015/063868 2014-06-20 2015-06-19 Piston de déroulage pour ressort pneumatique Ceased WO2015193494A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15731888.2A EP3158216A1 (fr) 2014-06-20 2015-06-19 Piston de déroulage pour ressort pneumatique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014108701.1A DE102014108701A1 (de) 2014-06-20 2014-06-20 Abrollkolben für eine Luftfeder
DE102014108701.1 2014-06-20

Publications (1)

Publication Number Publication Date
WO2015193494A1 true WO2015193494A1 (fr) 2015-12-23

Family

ID=53489941

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/063868 Ceased WO2015193494A1 (fr) 2014-06-20 2015-06-19 Piston de déroulage pour ressort pneumatique

Country Status (3)

Country Link
EP (1) EP3158216A1 (fr)
DE (1) DE102014108701A1 (fr)
WO (1) WO2015193494A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016013989B4 (de) * 2016-11-23 2019-08-01 Wvl-Werkzeug- Und Vorrichtungsbau Lichtenstein Gmbh Verfahren und Werkzeug zur Umformung von Rohr-Fertigteilen mit aufgeweiteten maßvergrößerten Rohrabschnitten

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1385357A (en) * 1919-08-22 1921-07-26 Standard Ordnance Corp Method of making piston-pins
GB819728A (en) * 1955-07-11 1959-09-09 Firestone Tire & Rubber Co Improvements in automobile suspension
US5382006A (en) * 1993-09-29 1995-01-17 The Goodyear Tire & Rubber Company Airspring piston and airspring assembly
DE10018238C1 (de) 2000-04-12 2001-12-20 Vaw Alutubes Gmbh Abrollkolben für Luftfedersysteme
WO2003008835A1 (fr) * 2001-07-18 2003-01-30 Progress-Werk Oberkirch Ag Cuvette de ressort pneumatique et son procede de production
DE102008031421A1 (de) * 2008-07-04 2010-01-07 Mühlhoff Umformtechnik GmbH Umformverfahren

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3147231C1 (de) * 1981-11-28 1983-03-31 Bergische Achsenfabrik Fr. Kotz & Söhne, 5276 Wiehl Luftfeder
US4650166A (en) * 1984-12-14 1987-03-17 The Goodyear Tire & Rubber Company Two piece piston for airsprings
IT1205188B (it) * 1987-06-26 1989-03-15 Pirelli Miglioramenti nelle molle ad aria
US4798369A (en) * 1987-11-03 1989-01-17 The Firestone Tire & Rubber Company Ultrasonic air spring system
DE3824542A1 (de) * 1988-07-20 1990-01-25 Sauer Achsenfab Tauchkolbenanordnung
DE4142325C2 (de) * 1991-12-20 1996-06-13 Bayerische Motoren Werke Ag Verfahren zum Herstellen von Fahrwerksträgern
DE4213676C2 (de) * 1992-04-25 1996-02-22 Continental Ag Luftfeder für Fahrzeuge mit einem elastomeren Rollbalg und einem Abrollkolben
DE4429992C2 (de) * 1993-11-03 1996-11-28 Fichtel & Sachs Ag Luftfeder
US5535994A (en) * 1993-11-30 1996-07-16 The Goodyear Tire & Rubber Company Composite air spring piston
US5638927A (en) * 1995-09-18 1997-06-17 General Motors Corporation Suspension damper
DE19758726B4 (de) * 1997-03-15 2006-07-20 Bpw Bergische Achsen Kg Luftfeder für Luftfederachsen
DE10305280A1 (de) * 2003-02-08 2004-08-19 Bpw Bergische Achsen Kg Luftfeder für eine luftgefederte Fahrzeugachse sowie Tauchkolben für die Luftfeder einer luftgefederten Fahrzeugachse
DE102005026314C5 (de) * 2005-06-07 2008-09-25 Lkh-Kunststoffwerk Gmbh & Co. Kg Tauchkolben aus Kunststoff für eine Luftfeder
DE102006009301A1 (de) * 2006-03-01 2007-09-06 Daimlerchrysler Ag Einzelradaufhängung mit fahrwerksversteifenden Gas- oder Hydraulikfederungsteilen
DE102011050103A1 (de) * 2011-05-04 2012-11-08 Contitech Luftfedersysteme Gmbh Abrollkolben für einen Luftfederrollbalg
DE102011051237A1 (de) * 2011-06-21 2012-12-27 Contitech Luftfedersysteme Gmbh Abrollkolben für einen Luftfederrollbalg
DE102011054330A1 (de) * 2011-10-10 2013-04-11 Contitech Luftfedersysteme Gmbh Abrollkolben für einen Luftfederbalg
DE102013106422B3 (de) * 2013-06-19 2014-12-24 Progress-Werk Oberkirch Ag Verfahren zum Herstellen eines Abrollkolbens für eine Luftfeder für Kraftfahrzeuge sowie derartiger Abrollkolben

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1385357A (en) * 1919-08-22 1921-07-26 Standard Ordnance Corp Method of making piston-pins
GB819728A (en) * 1955-07-11 1959-09-09 Firestone Tire & Rubber Co Improvements in automobile suspension
US5382006A (en) * 1993-09-29 1995-01-17 The Goodyear Tire & Rubber Company Airspring piston and airspring assembly
DE10018238C1 (de) 2000-04-12 2001-12-20 Vaw Alutubes Gmbh Abrollkolben für Luftfedersysteme
WO2003008835A1 (fr) * 2001-07-18 2003-01-30 Progress-Werk Oberkirch Ag Cuvette de ressort pneumatique et son procede de production
DE102008031421A1 (de) * 2008-07-04 2010-01-07 Mühlhoff Umformtechnik GmbH Umformverfahren

Also Published As

Publication number Publication date
DE102014108701A1 (de) 2015-12-24
EP3158216A1 (fr) 2017-04-26

Similar Documents

Publication Publication Date Title
DE102015103721B3 (de) Verfahren zur Herstellung eines Blechumformbauteils mit bereichsweise voneinander verschiedenen Wandstärken sowie Achshilfsrahmen
EP2548671B1 (fr) Procédé destiné à la fabrication d'un composant structurel tubulaire pour un véhicule automobile
DE102011117066B4 (de) Vorrichtung zur Herstellung eines warmumgeformten und pressgehärteten Kraftfahrzeugkarosseriebauteils sowie Verfahren zur Herstellung
DE102009041478A1 (de) Bauteil, insbesondere Lenker für ein Fahrzeug
EP3455006B1 (fr) Procédé de fabrication d'un élément
DE102017102356B3 (de) Verfahren und Vorrichtung zum Herstellen eines Kragens an einem Werkstück
WO2018099744A1 (fr) Procédé et produit semi-fini pour la fabrication d'un élément profilé au moins partiellement durci
EP3565677B1 (fr) Procédé de fabrication de pièces métalliques en feuille et dispositif associé
EP2205371B1 (fr) Procédé pour fabriquer des systèmes à double tube
WO2007121709A1 (fr) Procede de fabrication d'un palier pivotant pour vehicule automobile avec une structure a coque
DE102013106422B3 (de) Verfahren zum Herstellen eines Abrollkolbens für eine Luftfeder für Kraftfahrzeuge sowie derartiger Abrollkolben
DE102015108768A1 (de) Verfahren und Vorrichtung zur Erzielung von großen Kragenlängen
DE102018209878A1 (de) Verfahren zur Herstellung einer Radschüssel
DE102005041741A1 (de) Verfahren zum Herstellen eines pressgehärteten Bauteils
EP3158216A1 (fr) Piston de déroulage pour ressort pneumatique
WO2019048025A1 (fr) Procédé de fabrication d'un composant et outil associé
EP1848554B1 (fr) Procede et dispositif pour realiser des pieces structurelles
EP3519120B1 (fr) Procédé de fabrication d'un composant par formage et pourvu d'une zone de paroi présentant des dimensions précises
DE102008062850B4 (de) Verfahren zur Herstellung eines Tiefziehteils sowie ein Verfahren zur Steuerung einer Tiefziehvorrichtung und eine Tiefziehvorrichtung
EP2708294B1 (fr) Procédé de fabrication d'un profil de torsion
EP0770435A1 (fr) Méthode de fabrication d'une pièce de construction et support d'essieu
EP1708832B1 (fr) Procede pour produire un profile creux
DE102014203767A1 (de) Verfahren zur Herstellung von Fahrzeugbauteilen
DE102015101717A1 (de) Verfahren und Vorrichtung zum Auskragen eines Werkstücks
DE102007050337A1 (de) Formgestauchter Hohlkörper

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: 15731888

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

REEP Request for entry into the european phase

Ref document number: 2015731888

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2015731888

Country of ref document: EP