EP2066468A2 - Procédé de densification de la surface d'une pièce frittée - Google Patents

Procédé de densification de la surface d'une pièce frittée

Info

Publication number
EP2066468A2
EP2066468A2 EP07800161A EP07800161A EP2066468A2 EP 2066468 A2 EP2066468 A2 EP 2066468A2 EP 07800161 A EP07800161 A EP 07800161A EP 07800161 A EP07800161 A EP 07800161A EP 2066468 A2 EP2066468 A2 EP 2066468A2
Authority
EP
European Patent Office
Prior art keywords
die
sintered part
section
tool
pressing
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.)
Granted
Application number
EP07800161A
Other languages
German (de)
English (en)
Other versions
EP2066468B1 (fr
EP2066468B2 (fr
Inventor
Herbert Schmid
Karl Dickinger
Wolfgang Siessl
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.)
Miba Sinter Austria GmbH
Original Assignee
Miba Sinter Austria 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
Family has litigation
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Application filed by Miba Sinter Austria GmbH filed Critical Miba Sinter Austria GmbH
Publication of EP2066468A2 publication Critical patent/EP2066468A2/fr
Publication of EP2066468B1 publication Critical patent/EP2066468B1/fr
Application granted granted Critical
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Active legal-status Critical Current
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Links

Classifications

    • 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
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B22F3/16—Both compacting and sintering in successive or repeated steps
    • B22F3/164—Partial deformation or calibration
    • 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
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/02—Compacting only
    • B22F3/03—Press-moulding apparatus therefor
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49462—Gear making
    • Y10T29/49467—Gear shaping
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49462—Gear making
    • Y10T29/49467—Gear shaping
    • Y10T29/49474—Die-press shaping

Definitions

  • the invention relates to a method for surface densification of sintered parts with the features of claim 1, as well as a die tool with the features of claims 15 and a die with the features of claim 37 for carrying out the method.
  • Sintered parts, ie workpieces made of pressed and sintered metal powder have long been an alternative to cast or from the fully machined workpieces.
  • each more or less pronounced porosity of the sintered parts has a negative impact on the flexural strength and the wear resistance of, for example, which restricts the use of powder-metallurgically produced gears in high-load gearboxes.
  • a method using a die tool is known from US 6,168,754 Bl.
  • a sintered blank that is pressed from powder metal and then sintered part is compacted on its outer surface by this is pressed by a multi-stage die tool.
  • the die tool comprises a plurality of axially spaced die plates with die openings, which substantially correspond to the shape of the sintered blank, but whose inner diameter decreases gradually and is smaller than the outer diameter of the sintered blank.
  • the outer periphery of the sintered part is plastically and elastically deformed, whereby the surface is compacted and the sintered part receives its final dimension.
  • the distances between the die plates allow the sintered part to expand by expanding a portion of the elastic deformations after each die plate.
  • the sintered part undergoes intermediate relief after each die plate, as a result of which a compressive residual stress remaining after deformation in the sintered part is built up stepwise.
  • the object of the invention is to provide a method for surface compacting a sintered part, which offers the possibility of a high compression of a sintered part surface while at the same time a simple tool design.
  • This object is achieved by a method for surface densification of sintered parts with the features of the independent claim 1 and by a die tool or a punch with the features of claim 15 and 37, respectively.
  • the compaction of the surface does not have to take place on the entire outer circumference of a sintered part, but can be limited to subsections of the outer surface.
  • the term inner diameter in this application is not limited to the diameter of a cylinder, but is generally understood to mean the distance between facing press surfaces as measured between cooperating pressing surfaces.
  • the sintered part In a die tool in which the last die section ends inside the tool body, the sintered part must be removed from the die tool after reversing the movement through the first die opening, but the method can be advantageously supplemented by the second sintered part being opposite one of the first die opening Die opening is moved out of the die tool.
  • the relative movement between the sintered part and the die tool can advantageously be rectilinear or in a screwing motion.
  • Sintered parts whose contact surfaces are rotationally symmetrical with respect to the axis, can be pressed both rectilinearly and with a screwing motion or a combination thereof through the die tool.
  • Sintered parts whose contact surfaces are formed by screw surfaces must be pressed in a screwing motion by the die tool.
  • additional tangential stress components can be introduced into the surface of the sintered part by means of a rotating movement, which can favorably influence the compacting process.
  • the movement is carried out by the sintered part and / or the die tool.
  • the sintered part is moved from the first die section to the last die section, but it can be advantageous for structural reasons or for procedural reasons to let the movement be performed by the die tool or to drive both the sintered part and the die tool.
  • the same drive concepts but also different drive concepts for the two components can be used, e.g.
  • the sintered part or the die tool executes a smooth, slow movement, and the die tool or die performs an intermittent fast movement, resulting in a pulsating relative velocity, which may be advantageous when a relative movement stop is undesirable and the movement from one Matrizenabrough to the subsequent section with higher speed to be performed.
  • the sintered part can be pressed and pulled both in the axial direction, and the introduction of correspondingly high tensile forces should be avoided in the axial direction of small dimensions of the sintered part due to the risk of breakage and should remain limited to sintered parts with axially larger dimensions.
  • the sintered part is placed between two pressure elements, e.g. two stamping associated with drive means, is largely pressurized over the entire surface axially.
  • the movement through the die tool can also be carried out with a reversal of the direction without the risk of the sintered part being damaged by the occurrence of higher tensile stresses.
  • the sintered part can be clamped between two pressure punches, the shape of which essentially corresponds to the matrix shape.
  • An advantageous variant of the method can also be that the sintered part is removed from the mold after reaching the last die section through the first die opening, i. the direction of movement is reversed after reaching the last die section.
  • the last die section has an influence on the finished size of the sintered part achieved after the process, it is advantageous if the sintered part in the last die section is compressed to an inner diameter which reduces a nominal dimension of a sintered part by the value of the elastic deformation of the sintered part caused by the pressing forces Sintered parts corresponds to this inner diameter. Since the plastic deformation takes place essentially on the outer surface of the sintered part, the elastic part of the deformation can be estimated relatively well by calculation methods, which is why it is possible to form the last die section such that the sintered part after removal of the last Matrizenabitess essentially has its nominal size. The dimensional accuracy achieved thereby can subsequent processing steps for further approximation the finished measure to a nominal size, eg make a grinding process unnecessary.
  • the sintered part is introduced into an insertion section arranged in front of the first die opening, which has an insertion diameter which is greater than a rough measurement of the sintered part on its outer surface.
  • This insertion section may e.g. be formed by an additional insertion plate, which is arranged in the pressing direction before the first die portion, and has an opening which is larger by a small functional clearance, as the Rohabstoryen the sintered part on its outer surface. This results in reliable positioning and guidance of the sintered part before and during the pressing into the first die section.
  • the sintered part is moved after the last die section into a subsequent calibration section which has a calibration diameter which corresponds to a nominal diameter of the sintered part on its outer surface.
  • the calibration section can connect directly to the last die section, or it can also be provided with a gap between the last die section and the dimensional calibration section, whereby an intermediate relief of the sintered part is possible before the calibration.
  • a possible embodiment of the method consists in that a sequence of sintered parts with or without pressure-resistant spacer elements each arranged between two sintered parts is moved by the die tool.
  • the method is carried out at about room temperature
  • the sintered part has a temperature in the process implementation, the temperature below the melting temperature, in particular in a range of 100 ° C or 200 0 C below the melting temperature, lies. Due to the increased temperature compared to the room temperature in the process execution of the process of surface compaction and thereby occurring change of the structure can be facilitated, which on the one hand, the surface properties of the finished sintered part can be favorably influenced and the forces required for the process performance can be reduced.
  • the application of the method is particularly advantageous if the sintered part is designed as a bearing bush, as a bearing shell, as a gear wheel, as a sprocket, as a toothed belt wheel or as a cam element.
  • the surface densification and flexural strength achievable with the method proves to be particularly advantageous in these applications of a sintered part.
  • the sintered part can be moved through the entire die tool, in particular pressed.
  • the inner diameter within a die section is constant, i. that the die section does not taper.
  • the pressing surface of the die section acting on it is a circular-cylindrical surface with generatrix parallel to the axis. Since a circular cylindrical die portion is relatively easy to manufacture, a die tool for circular cylindrical sintered parts can be produced by simple means, when all die sections each have constant inner diameters.
  • the inner diameter decreases linearly within a die section in the direction of the second die opening.
  • This can e.g. be effected by a conical or pyramidal design of the pressing surfaces, wherein the taper is oriented in the direction of the second Matrizenöff- opening.
  • Further possibilities for influencing the compression process are when the inner diameter decreases progressively or degressively within a die section in the direction of the second die opening.
  • an axial die section length is greater than an axial contact face length. This ensures that a sintered part or its contact surface is completely introduced into a die section before a leading edge of the sintered part or the contact surface already experiences the deformation by the subsequent die section.
  • the for the movement of the Sintered parts required force is thus occasionally largely constant, whereby a phase-wise, constant movement speed relatively easy, for example via a pressure control of a Fluidzy Linders, which acts on the sintered part, can be achieved.
  • the axial die section length of the last die section may be less than 30% of the contact surface length of the sintered part.
  • Last Matrizenabites causes a limited to a small proportion of the contact surface kneading effect, which can increase the effectiveness of surface compaction in addition.
  • this Matrizenabites be conical, whereby the kneading effect is enhanced.
  • this is advantageous if the sintered part is removed again from the die tool through the first die opening.
  • the total axial length of all die sections is smaller in total than the axial contact surface length of the sintered part.
  • the surface compaction takes place only on a small part of the contact surface and the influences of the axial sliding friction are thereby lower compared to a longer tool.
  • a further advantageous embodiment of the die tool is when a sequence of successive die sections alternately has a constant inner diameter and a decreasing inner diameter.
  • the die sections with a decreasing inner diameter can act as a kind of continuous transition between the die sections with a constant inner diameter, whereby pronounced steps between successive die sections can be avoided. It is also advantageous to form the transition from a die section to a subsequent die section by a chamfer or at least a rounding. A sharp-edged design of a stepped transition and a correspondingly higher wear on the die tool can be largely avoided.
  • the inner diameter in the last die section has a value which reduces a nominal dimension of the sintered part by the value of the elastic deformation of the sintered part due to the pressing forces this inner diameter corresponds.
  • the elastic deformation of the sintered part can be estimated for this purpose with sufficiently good accuracy, whereby the sintered part after passing through the last die section has at least approximately its nominal dimension.
  • the inner contour is rotationally symmetrical with respect to the axis.
  • the surface of a circular cylindrical sintered part can be compacted with a single process implementation over its entire circumference, while in only partially executed as a circular cylinder pressing surfaces a two or more times performing the pressing process with intermediate lying rotation of the sintered part would be required.
  • the inner contour is rotationally symmetrical with respect to the axis, whereby the die tool, in particular for the surface compression of sintered gears, Zahn ⁇ emenrädem or sprockets is applicable.
  • the method is also applicable to irregularly shaped sintered parts, if the pressing surface of a
  • Matrizenabites is formed as a general cylindrical surface.
  • the application is therefore not limited to rotational or rotationally symmetrical sintered parts.
  • the pressing surface of a die portion can also be formed by a screw surface, whereby the surfaces of a helical gear can be compressed when the movement is performed by the die tool with a screwing movement.
  • the pressing surfaces of the die sections are each formed at least in sections by internal straight toothing. The tooth flanks extend in the axial direction.
  • the pressing surfaces of the die sections are each formed, at least in sections, by internal helical gearing, helical spur gears or spur gear segments can also be surface-compacted.
  • the die tool can be composed of several die parts both in the axial and in the radial direction, but an extremely robust design is achieved if the die tool is made in one piece.
  • the introduction of a sintered part into the die tool is substantially facilitated if, in the direction of the second die opening, before the first die section, an insertion section whose inner diameter is larger than a raw diameter of the sintered part is arranged.
  • the insertion section corresponds to a die section, but with a clearance fit instead of a press fit to the sintered part.
  • the calibrating section can connect directly to the last die section or a gap can be provided therebetween which effects an intermediate relief of the sintered part, which thereby at least partially degrades its elastic deformation by expansion before the actual calibration section.
  • FIG. 1 shows a longitudinal section along the line II in Figure 2 through an inventive die tool with a sintered part to be machined.
  • 2 shows a cross section through a further Aus collirungsform a Matrizentechnikmaschines with a processed sintered part according to the lines II-II in Fig. 1.
  • FIG. 3 shows a section of a longitudinal section of a further embodiment of a die tool
  • Fig. 6 shows a detail of a longitudinal section of a further embodiment of the
  • Fig. 7 is an axial plan view of another embodiment of the die tool.
  • Fig. 8 is a plan view of another embodiment of the die tool.
  • Fig. 9 is a plan view of another embodiment of the die tool.
  • FIG. 11 shows a longitudinal section through a further embodiment of the die tool
  • Fig. 14 shows the method with passing through the sintered part by the die tool;
  • Fig. 15 the Verfalirens die arrangement with both sides tikbeetzschlagbarem sintered part;
  • Fig. 16 shows another embodiment of a die tool with an additional
  • Import section and an additional calibration section are Import section and an additional calibration section.
  • FIG. 1 shows a longitudinal section through a die tool 1 according to the invention for surface compacting a sintered part 2 by moving it along an axis 3 through the die tool 1.
  • This comprises a tool base 4 which has a first die opening 6 on a tool surface 5, along which the axis 3 multiple die sections 7, 8 and 9 lead into the interior of the tool base 4.
  • a first die section 7 adjoins the first die opening 6
  • a last die section 9 extends in the illustrated embodiment as far as an opposing second tool surface 10 and thereby forms a second die opening 11.
  • the last die section 9 also end in the interior of the tool base 4, whereby no second die opening 11 is formed.
  • the sintered part 2 must in any case be removed again from the die tool 1 through the first die opening 6.
  • the sintered part 2 consists of pressed and subsequently sintered powder metal, the methods and materials for producing such a sintered blank from the prior art are sufficiently known and therefore not further explained.
  • the sintered part 2 is designed disc-shaped in the illustrated embodiment and has on an outer surface 12 has a diameter 13, which corresponds to a raw diameter 14 before the surface compression and after the surface compression corresponds to a smaller final diameter 15.
  • the surface compacting of the sintered part 2 is carried out by being introduced through the first die opening 6 in the first die section 7 and subsequently in all other die sections 8 and also to the last die section 9, wherein in each die section 7, 8, 9, the outer surface 12 of the sintered part 2 at least on sections of the outer surface 12 against wall surfaces 16 of the die sections 7, 8, 9 is pressed.
  • the contact surface 17 may thus by a part of the outer surface 12 or through the entire outer surface 12 may be formed; the pressing surface 18 can be formed by a partial section of the wall surface 16 or even by the entire wall surface 16, whereby the partial section can refer to the axial extension and / or also to the extension in the circumferential direction.
  • the pressing effect is achieved in that an inner diameter 19, by the clear width between opposite or cooperating portions of the pressing surface
  • the term inner diameter 19 is not limited to circular cross-sections to understand, but also as a clear width between co-operating press surface parts, not necessarily by the Axis 3 of the die tool 1 go.
  • the diameter 13 on the sintered part 2 is not limited to radial directions.
  • the successive die sections 7, 8, 9 along the axis 3 merge into one another continuously and have monotonically decreasing inner diameters 19 from the first die section 7 to the last die section 9, i. consecutive inner diameter
  • the pressing action on the contact surface 17 of the sintered part 2 increases from the first die section 7 to the last die section 9, whereby a pressing direction 20 is defined, which is defined by the first ting die section 7 to the last die section 9 has.
  • the movement of the sintered part 2 in the die tool 1 takes place in a straight line in the pressing direction 20 from the first die opening 6 to the last die section 9, followed by the removal of the sintered part 2 from the die tool 1 via the second die opening 11 or after reversing the direction of movement against the pressing direction 20 through the first die opening 6.
  • the rectilinear movement in the direction of the axis 3 can also be a rotational movement, e.g. in a rotational direction 21, be superimposed, whereby the sintered part 2 performs a screwing in the die 1.
  • sintered parts 2 can also be compacted on their surface with the die workpiece 1, the outer surface 12 of which also includes sealing surfaces.
  • the movement of the sintered part 2 in this case takes place about a screw axis 22 which coincides or is parallel to the axis 3, for example if the screw surface to be compacted on the outer surface 12 of the sintered part 2 is not disposed on the entire circumference of the sintered part 2 and this does not have a rotationally symmetrical basic body.
  • the direction of movement of the sintered part 2 in the die tool 1 can, as well as the speed of movement for optimizing the surface compaction, have an arbitrary course and, for example, also include a reversal of the direction of movement, a stoppage of movement, very slow but also very fast movements.
  • Drackspannun- gene arise, which are oriented substantially perpendicular to the contact surfaces 17, by the movement of the sintered part experiences the contact surface 17 additionally also a Gleitreibungsspan- voltage in the axial direction in a straight line movement or in both the axial and tangential direction in a screwing movement.
  • edge layers of sintered parts 2 having a thickness of a few hundredths of a millimeter up to several tenths of a millimeter and above. After this surface compaction remain in the sintered part 2 in its boundary layers compressive stresses that cause a beneficial increase in flexural strength and an increase in wear resistance.
  • the axial length of the sintered part 2 or the length of its contact surfaces 17 and the axial lengths of the die sections 7, 8, 9 are further influenced by the method.
  • all the die sections 7, 8, 9 have approximately equal die section lengths 23, Deviating from this, individual or multiple die portion lengths 23, in particular the die portion length 23 of the last die portion 9, may be shorter than the contact face length 24 of the sintered part 2. It is even possible that the contact face length 24 is greater as the sum of all template sections 7, 8, 9.
  • the relative movement between the sintered part 2 and the die tool 1 required for carrying out the method can be achieved by moving the sintered part 2 and / or by moving the die tool 1, with the sintered part 2 and the die tool 1 each having a suitable drive or a fixed frame are connected.
  • the sintered part 2 leaves the last die section 9 either through the second die opening 11 or after reversal of the direction of movement against the pressing direction 20 through the first die opening 6.
  • the elastic deformations of the sintered part 2 which occur during the pressing in may thereby at least partially degrade and the diameter 13 of the sintered part 2 rises from the inner diameter 19 of the last Matrizenabitess 9 by the elastic spring back slightly on the larger end diameter 15, which corresponds as possible to the nominal diameter of the sintered part 2.
  • Fig. 1 this is shown with a sintered part 2 shown in dashed lines, which is located in the pressing direction 20 after the last die section 9 and the end diameter 15 is slightly larger than the inner diameter 19 of the last die section.
  • FIG. 2 shows a cross section according to the lines II-II in Fig. 1 by the erf ⁇ ndungssiee die 1 with a pressed therein sintered part 2.
  • This is not rotationally symmetrical with respect to the axis 3 in the illustrated embodiment, further extends its contact surface 17, at which the surface compression takes place, not over its entire outer circumference, ie that only part of its outer surface 12 is compressed.
  • the stencil tool 1 does not involve the entire wall surface 16 at the compression, but only the pressing surfaces 18, which contact the corresponding contact surfaces 17 of the sintered part 2.
  • FIG. 3 shows a section from a longitudinal section through a further embodiment of the die tool 1 according to the invention with four die sections 7, 8, 9 whose inner diameters 19 are gradually reduced in the pressing direction 20.
  • the transition from a die section 7, 8 to the adjoining die section 8, 9 can be designed as a chamfer 28, or be provided with a rounding 29, wherein in the pressing direction 20 can connect to a concave curve convex rounding.
  • a smooth transition of the sintered part 2 from one die section 7, 8 to the subsequent die section 8, 9 can take place without an unintentional material removal at the sintered part 2 being effected by a sheep-edged step, or the edges breaking off at the transitions of the die tool 1.
  • the die tool 1 according to FIG. 4 shows a detail from a longitudinal section through a further embodiment of the inventive die tool 1, which in this embodiment variant is not in one piece, but is composed of several die plates 30. Notwithstanding the embodiment according to FIG. 3, in which the inner diameters 19 within the die sections 7, 8, 9 are each constant, ie are formed by a circular cylinder surface 31, the die tool 1 according to FIG. 4 has between two die sections 7 and 8, 8 and 8, or 8 and 9 with circular cylindrical surfaces 31 also have a die section 8, which has a cross-sectional taper 32 in the pressing direction 20.
  • a die section 8 which is arranged between two further die sections 7 and 8, or 8 and 8, or 8 and 9 with circular cylinder surfaces 31, has a tapering surface 35, which has a progressive course in the pressing direction 20, ie the decrease of the inside diameter 19 within the die portion 8 in the pressing direction 20 becomes stronger.
  • the decrease in the inner diameter 19 is progressive in the region of the taper surface 35.
  • FIG. 6 shows a section from a longitudinal section through a further embodiment of the die tool 1, in which between two die sections 7 and 8, or 8 and 8, or 8 and 9 with a circular cylindrical surface 31 as a wall surface 16, a die section 8 with a tapering surface 35 as Wall surface 16 is arranged, in which the decrease in the inner diameter 19 in the pressing direction is lower, that has a degressive course.
  • FIG. 7 shows a plan view of a further embodiment of the die tool 1 according to the invention, in which the inner contour 25 of the wall surface 16 is rotationally symmetrical with respect to the axis 3.
  • FIG. 8 shows a plan view of a further embodiment of the die tool 1 according to the invention, in which the inner contour 25 of the wall surface 16 of the die sections 7, 8, 9 is executed rectangular.
  • the inner contour 25 is therefore only rotationally symmetrical with respect to the axis 3 and suitable for compacting sintered parts with a rectangular cross-section.
  • Fig. 9 is a plan view of another embodiment of the die tool 1 with an inner contour 25 of the wall surfaces 16 of the die sections 7, 8, 9 which is composed of a circular section, a straight and a toothing.
  • the method for compacting the surface of sintered parts 2 is thus not applicable to rotationally symmetrical or rotationally symmetrical outer contours 26 of sintered parts 2, but also for arbitrarily shaped outer contours 26.
  • FIG. 10 shows a plan view of a further embodiment of the die tool 1, in which the inner contour 25 of the wall surfaces 16 of the die sections 7, 8, 9 form an internal toothing 36 with which the outer surfaces 12 of a gearwheel can be compressed.
  • the inner contour 25 can thereby run straight in the direction of the axis 3, whereby the
  • Matrizenwerkmaschine 1 is suitable for surface compaction of straight-toothed gears
  • the inner contour 25 is in the tool interior but not straight, but continues with an additional screwing in the direction of rotation 21, can be surface-hardened with the die tool 1 gears with helical teeth.
  • FIG. 11 shows a longitudinal section through a further embodiment of the die tool 1, which has only a first die opening 6 and a sintered part 2 is therefore removed again from the die tool 1 through the first die opening 6 after reaching the last die section 9.
  • the pressing surfaces 18 of the individual die sections 7 go in this embodiment with linear decreasing inner diameter 19 steplessly into one another. As a result, the individual die sections 7 merge into a single large die cut.
  • This embodiment of the die tool 1 can also be used to influence the final diameter 15 of the sintered part 2, by the sintered part 2 is used with different depth of immersion 37 in the die tool 1.
  • sintered parts 2 can be surface-compacted with this embodiment of the die tool 1, in which it is not the maintenance of a specific final diameter 15 that is the focus, but the degree of surface compression. If, for example, a constant maximum force is always expended for the movement of the sintered part 2 in the pressing direction 20, in each case approximately the same surface compaction is achieved even when the raw diameters 14 of the sintered parts 2 fluctuate.
  • FIG. 12 shows a longitudinal section through a further embodiment of the die tool 1, in which the individual die sections 7, 8, 9 are likewise fused into a single die section.
  • Whose wall surface 16 and the pressing surface 18 is formed by a general tapered surface 35, the inner diameter 19 decreases in the direction of compression 20 degressive and expires with a circular cylindrical surface 31 in the region of the second die opening 11.
  • Fig. 13 shows the implementation of the method according to the invention, in which two sintered parts 2 by means of a pressing against an end face 38 of a sintered part 2 pressing member 39, e.g. of a ram in the pressing direction 20 are pressed by the die tool 1. Between the two sintered parts 2, a pressure-resistant spacer element 56 is arranged.
  • the pressure element 39 is for this purpose connected to a suitable drive device 40, for example with a hydraulic press, a pneumatic press, a mechanical press, etc.
  • FIG. 14 shows the implementation of the method in which a sintered part 2 is pulled in the pressing direction 20 through the die tool 1.
  • a tensioning element 41 is fastened with a suitable anchoring 42, e.g. by screwing in the tension element 41, which in turn is connected to a suitable drive device 40.
  • the implementation of the method with pushing through the sintered part 2 by the die 1 is particularly recommended for sintered parts 2, the axial length, in particular the contact surface length 24, is small, compared to the diameter 13, while the process variant with the pulling of the sintered part 2 by the die tool 1 can be used for sintered parts 2, whose axial length is greater than the diameter 13 of its cross section.
  • 15 shows a further variant of the method for surface compaction, in which the sintered part 2 is acted upon by pressure forces 43-indicated by small arrows-at its two opposite end faces 38 between two pressure elements 39 during the entire compaction process. Both in a movement in the pressing direction 20, as well as in a movement in an opposite direction 44 - indicated by a dashed arrow.
  • a reversal of the direction of movement can also be carried out in the case of disc-shaped sintered parts 2 with a small axial length, for example in order to enable intermediate relief and a reduction of elastic deformation.
  • FIG. 16 shows a die tool 45, which comprises a die tool 1 according to the invention, an additional insertion section 46, which is arranged in front of the first die opening 6 of the die tool 1, viewed in the pressing direction 20, and an additional calibrating section 47, viewed in the pressing direction 20, after the second die opening 11 of the die tool 1 is arranged.
  • the insertion section 46 is formed by an insertion plate 48, which is directly adjacent to the first tool surface 5 of the die tool 1.
  • An insertion opening 49 arranged coaxially with the die tool is formed in the insertion plate 48, the wall surface 16 of which has the same inner contour 25 as the die sections 7, 8, 9 but has an import diameter 50 which is greater than the raw diameter 14 of the sintered part 2.
  • the insertion section 46 thus facilitates the accurate and positionally correct feeding of the sintered part 2 into the first die section 7 of the die tool 1.
  • the calibration section 47 comprises a calibration plate 51 abutting the second, opposite tool surface 10, which has a calibration opening 52 coaxial with the die tool 1, the wall surface 16 of which has the same inner contour 25 as the matrix tool 1, but has a calibration diameter 53 corresponding to the nominal diameter of the sintered part 2 corresponds or is smaller.
  • a calibration diameter 53 corresponding to the nominal diameter of the sintered part 2 corresponds or is smaller.
  • a relief section 54 can be connected directly to the second die opening 11, which has a relief diameter 55 which is greater than the nominal diameter or The end diameter 15 of the sintered part 2.
  • the calibration stage can be longer in the direction of the axis 3 than the overall height of the sintered part in this direction. Furthermore, the calibration stage can alseisen a larger diameter than the last die section 9, whereby in the ejection of the sintered part 2 on the first die opening 6 in turn a kneading effect is achieved.
  • the invention is also useful for surface compaction of breakthroughs, e.g. Holes, suitable in sintered parts 2.
  • a punch is used which, like the die tool 1, also has sections with different diameters, in which case, however, the diameter of the sections merging into one another increases monotonously. All other comments on the die tool apply mutatis mutandis to the stamp, the information "inside” and "outside” are to be changed accordingly.

Abstract

L'invention concerne un procédé de densification de la surface d'une pièce frittée (2), selon lequel une pièce frittée (2) est déplacée dans un outil matrice (1) le long d'un axe (3) dans le sens de compression (20) à travers plusieurs segments de matrice (7, 8, 9) entre un premier segment de matrice (7) situé au niveau d'un premier orifice de matrice (6) et un dernier segment de matrice (9), une surface de paroi (16) de chaque segment de matrice (7, 8, 9) formant au moins une surface de compression (18) contre laquelle est comprimée une surface de contact (17) formée par une surface extérieure (12) de la pièce frittée (2), et un contour intérieur (25), défini par la surface de compression (18) et situé dans une section transversale par rapport à l'axe (3), correspondant au moins approximativement à un contour extérieur (26) défini par la surface de contact (17). Lors du déplacement de la pièce frittée (2), la densification de surface a lieu du premier orifice de matrice (6) au dernier segment de matrice (9), au moyen des segments de matrice (7, 8, 9) passant de manière continue de l'un à l'autre, les diamètres intérieurs (19) des segments de matrice (7, 8, 9) diminuant de manière uniforme et étant mesurés entre les surfaces de compression (18) coopérantes.
EP07800161.7A 2006-09-04 2007-08-31 Procédé et appareil pour la densification de la surface d'une pièce frittée Active EP2066468B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0146806A AT504081B1 (de) 2006-09-04 2006-09-04 Verfahren zur oberflächenverdichtung eines sinterteils
PCT/AT2007/000416 WO2008028207A2 (fr) 2006-09-04 2007-08-31 Procédé de densification de la surface d'une pièce frittée

Publications (3)

Publication Number Publication Date
EP2066468A2 true EP2066468A2 (fr) 2009-06-10
EP2066468B1 EP2066468B1 (fr) 2014-06-04
EP2066468B2 EP2066468B2 (fr) 2017-12-06

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07800161.7A Active EP2066468B2 (fr) 2006-09-04 2007-08-31 Procédé et appareil pour la densification de la surface d'une pièce frittée

Country Status (7)

Country Link
US (1) US8474295B2 (fr)
EP (1) EP2066468B2 (fr)
JP (1) JP2010502834A (fr)
CN (1) CN101557894B (fr)
AT (1) AT504081B1 (fr)
CA (1) CA2662392A1 (fr)
WO (1) WO2008028207A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016123407A1 (de) 2015-12-14 2017-06-14 Miba Sinter Austria Gmbh Verfahren zum Oberflächenverdichten und Kalibrieren eines Sinterbauteils
DE102019000138A1 (de) 2018-01-24 2019-07-25 Miba Sinter Austria Gmbh Verfahren zur Herstellung eines Sinterbauteils

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT9818U1 (de) * 2007-04-04 2008-04-15 Miba Sinter Austria Gmbh Vorrichtung und verfahren zum kalibrieren eines sinterformteils
AT507913B1 (de) 2009-03-02 2013-08-15 Miba Sinter Austria Gmbh Vorrichtung zum verdichten eines sinterbauteils
AT509588B1 (de) 2010-06-10 2011-10-15 Miba Sinter Austria Gmbh Verdichtungswerkzeug
CN102248359B (zh) * 2011-04-22 2013-06-05 柳州市龙杰汽车配件有限责任公司 带轴承皮带轮的制造方法
CN105018824B (zh) * 2014-04-17 2017-09-26 东睦新材料集团股份有限公司 一种粉末冶金凸轮的制备方法
AT516779B1 (de) * 2015-01-23 2017-04-15 Miba Sinter Austria Gmbh Verfahren zur Herstellung einer Balligkeit auf einem Sinterbauteil
CN107470617B (zh) * 2017-02-28 2019-08-13 重庆大学 变节距的螺杆转子成型装置
DE102018107637A1 (de) * 2018-03-29 2019-10-02 Dorst Technologies Gmbh & Co. Kg Kalibrierverfahren
AT520531B1 (de) * 2018-04-24 2019-05-15 Miba Sinter Austria Gmbh Zahnrad
CN111231562A (zh) * 2020-03-03 2020-06-05 台州市皓仔邦工业设计有限公司 仿古银元模具的直边齿成型组合件
CN111112368A (zh) * 2020-03-03 2020-05-08 台州市皓仔邦工业设计有限公司 机外脱模仿古银元模具的推料装置
US11707786B2 (en) * 2020-04-17 2023-07-25 PMG Indiana LLC Apparatus and method for internal surface densification of powder metal articles
CN112090975B (zh) * 2020-08-27 2022-07-05 东风商用车有限公司 一种表面挤压强化的发动机齿轮制造工艺及挤压成型模具
MX2023003747A (es) * 2020-10-23 2023-04-24 Schunk Sintermetalltechnik Gmbh Metodo para producir un componente sinterizado.

Family Cites Families (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2306263A (en) 1939-08-14 1942-12-22 Westinghouse Electric & Mfg Co Method of manufacturing contact pins
US2957232A (en) 1954-07-29 1960-10-25 Thompson Ramo Wooldridge Inc Forged powdered metal articles
US3874207A (en) * 1957-10-22 1975-04-01 Jerome H Lemelson Extrusion apparatus
US3608350A (en) † 1969-03-04 1971-09-28 Terumoto Yamaguchi Apparatus and method for producing blanks for commutators for miniature electric devices
DE1918679A1 (de) † 1969-04-12 1970-10-15 Daimler Benz Ag Matrize eines Warmfliesspresswerkzeuges
US3605475A (en) * 1969-06-19 1971-09-20 Nat Machinery Co The Method and apparatus for extruding gear blanks
US3705509A (en) * 1969-11-12 1972-12-12 Federal Mogul Corp Fluid-conducting hot-forging die and method of making the same
US4008021A (en) * 1971-08-10 1977-02-15 Schwelmer Eisenwerk Muller & Co. Gmbh Apparatus for forming a sinterable compact of a powder
US3842646A (en) * 1973-04-20 1974-10-22 Gleason Works Process and apparatus for densifying powder metal compact to form a gear having a hub portion,and preferred powder metal compact shape for use therewith
US3910091A (en) † 1974-04-30 1975-10-07 Ford Motor Co Apparatus and method for cold extrusion of gears
US4111031A (en) * 1977-09-09 1978-09-05 General Motors Corporation Powder metal crown gear forming process
US4622842A (en) † 1984-12-13 1986-11-18 Ford Motor Company Die for extruding toothed helical members
US4712411A (en) * 1986-05-15 1987-12-15 Clevite Industries Inc. Apparatus for making a forged metal article
JPH01170544A (ja) † 1987-12-26 1989-07-05 M H Center:Kk ヘリカルインターナルギアの塑性加工装置
US4878370A (en) † 1988-08-15 1989-11-07 Ford Motor Company Cold extrusion process for internal helical gear teeth
US5325698A (en) † 1992-09-30 1994-07-05 Ford Motor Company Stepped extrusion die assembly
GB2275054A (en) 1993-02-10 1994-08-17 Rank Brimar Ltd Tungsten articles and method for making them
US5659955A (en) * 1994-01-21 1997-08-26 Plamper; Gerhard Method of making powder metal helical gears
JPH1085995A (ja) † 1996-09-20 1998-04-07 Toyota Motor Corp 焼結部品の表面緻密化方法
US5996393A (en) * 1998-02-23 1999-12-07 Osram Sylvania Inc. Extrusion die for tungsten alloys
US5995393A (en) † 1998-07-31 1999-11-30 Philips Electronics N.A. Corporation Latching shutdown and delayed restart of DC power supply in broadband network
US5996229A (en) * 1998-09-25 1999-12-07 Yang; Tsung-Hsun Method and mold die for forming a spiral bevel gear from metal powders
RU2156179C2 (ru) * 1998-11-10 2000-09-20 ЗАО "Научно-производственное предприятие "Технология" Способ изготовления высокоплотных спеченных деталей на одноосном прессе
US6168754B1 (en) * 1999-02-17 2001-01-02 Federal-Mogul World Wide, Inc. Method and apparatus for densifying powder metal preforms
US6017489A (en) † 1999-02-17 2000-01-25 Federal-Mogul World Wide, Inc. Method of densifying powder metal preforms
JP3700965B2 (ja) † 1999-10-29 2005-09-28 日高精機株式会社 拡管ビレット及びチューブの拡管方法
JP3774625B2 (ja) * 2000-10-30 2006-05-17 株式会社日立製作所 焼結部材の鍛造方法
DE10142805C2 (de) * 2001-08-31 2003-10-16 Gkn Sinter Metals Gmbh Einteiliger Gelenkkörper
US6899846B2 (en) † 2003-01-14 2005-05-31 Sinterstahl Corp.-Powertrain Method of producing surface densified metal articles
US7025929B2 (en) * 2004-04-08 2006-04-11 Pmg Ohio Corp. Method and apparatus for densifying powder metal gears

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008028207A2 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016123407A1 (de) 2015-12-14 2017-06-14 Miba Sinter Austria Gmbh Verfahren zum Oberflächenverdichten und Kalibrieren eines Sinterbauteils
DE102019000138A1 (de) 2018-01-24 2019-07-25 Miba Sinter Austria Gmbh Verfahren zur Herstellung eines Sinterbauteils

Also Published As

Publication number Publication date
EP2066468B1 (fr) 2014-06-04
AT504081B1 (de) 2008-11-15
AT504081A1 (de) 2008-03-15
WO2008028207A3 (fr) 2008-11-06
CA2662392A1 (fr) 2008-03-13
WO2008028207A9 (fr) 2010-09-30
US8474295B2 (en) 2013-07-02
EP2066468B2 (fr) 2017-12-06
WO2008028207A2 (fr) 2008-03-13
CN101557894A (zh) 2009-10-14
JP2010502834A (ja) 2010-01-28
US20110132057A1 (en) 2011-06-09
CN101557894B (zh) 2013-08-14

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