EP0032668A1 - Matrice pour le déformage dans le procédé à froid ou à demi-chaud - Google Patents

Matrice pour le déformage dans le procédé à froid ou à demi-chaud Download PDF

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Publication number
EP0032668A1
EP0032668A1 EP81100059A EP81100059A EP0032668A1 EP 0032668 A1 EP0032668 A1 EP 0032668A1 EP 81100059 A EP81100059 A EP 81100059A EP 81100059 A EP81100059 A EP 81100059A EP 0032668 A1 EP0032668 A1 EP 0032668A1
Authority
EP
European Patent Office
Prior art keywords
die
slots
core
die core
shrink
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.)
Withdrawn
Application number
EP81100059A
Other languages
German (de)
English (en)
Inventor
Horst Schmidt
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.)
Karl Sieber & Co KG Fabrik fur Umformwerkzeuge GmbH
Original Assignee
Karl Sieber & Co KG Fabrik fur Umformwerkzeuge 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 Karl Sieber & Co KG Fabrik fur Umformwerkzeuge GmbH filed Critical Karl Sieber & Co KG Fabrik fur Umformwerkzeuge GmbH
Publication of EP0032668A1 publication Critical patent/EP0032668A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
    • B30B15/026—Mounting of dies, platens or press rams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C25/00—Profiling tools for metal extruding
    • B21C25/02—Dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
    • B21C3/02—Dies; Selection of material therefor; Cleaning thereof
    • B21C3/04—Dies; Selection of material therefor; Cleaning thereof with non-adjustable section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/02—Dies or mountings therefor

Definitions

  • the invention relates to a die for massive forming in the cold or warm method from a shrink fit with an interior, optionally longitudinally divided die core and one or more shrink rings.
  • a shrink dressing consists of a matrix core and at least one shrink ring.
  • a die core serving as a pressure sensor can have a smooth or a stepped round or polygonal interior.
  • the shrinkage creates a tangential pressure in the die core tension and creates a tangential tension in the shrink ring.
  • the working pressure then has the effect that a tangential tensile stress is generated in the die core, which counteracts the previously applied tangential compressive prestress.
  • the compressive strength of a die core depends on the relationship between the two stresses.
  • the pressure preload on the inner surface of the die core is expediently greater than the tensile stress arising under the working pressure.
  • the invention has for its object to provide a die of the type mentioned, which has the same dimensions as known dies a higher stability or durability, or, if it is designed for corresponding work values as known dies, with smaller dimensions and at least can also be produced in part with less expensive material.
  • the exchange of a die core should also be facilitated, taking into account the above advantages.
  • die cores from tungsten carbide (hard metal), high-speed steels or ledeburitic chromium steels. When used (for steel with a hardness of 52 - 64 Rockwell C), all of these materials are only suitable to a limited extent for absorbing tensile stress.
  • Materials for the shrink rings are alloyed tool steels or martensite-hardening nickel alloys. The use of these materials is included in the practice of the invention. This indicates that a considerable amount of prestressing is required, particularly in the case of the materials specified for die cores, in order to limit the occurrence of the resulting tensile stresses.
  • an intermediate bushing arranged between the die core and at least one shrink ring is made of a material of high compressive strength and has at least two separate slots which run essentially in the axial direction.
  • an advantageous embodiment is that a known die core is divided in terms of its radial dimension or wall thickness into an inner core of reduced wall thickness and the slotted intermediate bushing.
  • the intermediate bush is advantageously made of tool steel, which has high pressure resistance. This results from the fact that the intermediate bush, which is flexible in the circumferential direction, transmits practically only radial stresses.
  • a very thin-walled core made of hard metal or high-speed steel is used depending on the size of the bore of 2 to 10 mm.
  • the shrink ring itself can be made smaller or, as already noted, from a less expensive material.
  • At least two slots are arranged continuously and the intermediate bush is divided into cylinder wall sections. This results in cylinder wall sections that are movable with respect to one another over their length.
  • slots are alternately arranged starting from different end edges of the socket and are guided up to the vicinity of the other socket end edge.
  • all slots start from one socket end edge and end at a distance from the other socket end edge.
  • An expedient embodiment has three slots or pairs of slots. However, it is preferred to arrange more slots, for example eight slots.
  • the described effect of the slotted inner bushing is increased by the majority of the slots.
  • a cylindrical design of the joints between core and intermediate bush on the one hand or intermediate bush and shrink ring on the other hand is included.
  • a tapered design of the parting lines is not excluded and may be expedient with regard to the design of the interior of the die core if there are special gradations or profiles over the longitudinal direction.
  • a die core 1 with a stepped interior 2 is arranged within an intermediate bush 3 in a shrink ring 4.
  • the intermediate socket 3 has eight slots 5, 6, 7, Vietnamese which each end at a distance from the other edge of the socket and may have a groove at their end to avoid tension.
  • the slots extend parallel to the longitudinal axis of the bushing and penetrate the bushing wall radially.
  • a relatively thick-walled cylindrical die core 10 is arranged in an intermediate bush 11 within a shrink ring 4.
  • This intermediate bushing 11 is divided by eight radial slots 12, 13, 14,... Into cylindrical wall sections 15, 16, 17,... From the upper bushing edge 9 to the lower bushing edge 8.
  • Another pair of slots 21, 22 offset from one another is arranged starting from the lower edge 8 of the socket, the slots of which end at a distance from the upper edge 9 of the socket. This results in adaptability over the entire height or length of the intermediate bushing without the bond of the intermediate bushing being interrupted.
  • parting lines are the abutting surfaces of the outside of a core and the inside of an intermediate bush or the outside of an intermediate bush and the inside of at least one shrink ring.
  • cylindrical shapes are shown for the parting lines.
  • Conical configurations are included, with the possibility that one or more of the parts in the assembly of the tool have a cross section that changes over its height.
  • FIGS. 6a and 6b A comparison of the embodiments in FIGS. 6a and 6b reveals that, for example when the die core 1 is designed with the same wall thickness, the use of an intermediate bushing 3 enables the shrink ring 4, as shown in FIG. 6b at 4, to be made with a small wall thickness .
  • the shrink ring 4 should retain its wall dimensions, it can be made of less expensive material or is this even when inserted slotted intermediate sleeve 3 with dimensions corresponding to 4 I possible.
  • the radial pressure resulting from the shrinkage pressure and the working pressure has a correspondingly smaller value on the reinforcement, i.e. affects the shrink ring arrangement. This results in a reduction corresponding to the ratio of the inside diameter to the outside diameter. Because the intermediate bushing itself remains practically free of tangential stresses due to the slots, it is possible, with the same inner diameter of the inner space of the die core or the same outer diameter and inner diameter of the shrink ring as before, to either give a higher preload on the die core or to give the shrink ring or to relieve the shrink ring arrangement accordingly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
EP81100059A 1980-01-18 1981-01-08 Matrice pour le déformage dans le procédé à froid ou à demi-chaud Withdrawn EP0032668A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803001671 DE3001671A1 (de) 1980-01-18 1980-01-18 Matrize fuer massivumformung im kalt- oder halbwarmverfahren
DE3001671 1980-01-18

Publications (1)

Publication Number Publication Date
EP0032668A1 true EP0032668A1 (fr) 1981-07-29

Family

ID=6092342

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81100059A Withdrawn EP0032668A1 (fr) 1980-01-18 1981-01-08 Matrice pour le déformage dans le procédé à froid ou à demi-chaud

Country Status (3)

Country Link
EP (1) EP0032668A1 (fr)
BR (1) BR8100241A (fr)
DE (1) DE3001671A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0131426A2 (fr) * 1983-07-08 1985-01-16 BICC Public Limited Company Extrusion de métal
EP0196791A1 (fr) * 1985-03-28 1986-10-08 Ngk Insulators, Ltd. Filière de boudineuse pour extruder des corps à structure alvéolaire
FR2637825A1 (fr) * 1988-10-14 1990-04-20 Danfoss As Outil de formage et procede destine a sa fabrication
US20050083488A1 (en) * 2003-10-21 2005-04-21 Huang Ming H. Light device having light concentrating device
CN103433396A (zh) * 2013-09-03 2013-12-11 西安胜智航空科技有限公司 一种用于形状记忆合金管接头扩径的径向伸缩扩管
CN103433395A (zh) * 2013-09-03 2013-12-11 西安胜智航空科技有限公司 一种形状记忆合金管接头扩径装置
CN104889185A (zh) * 2015-06-13 2015-09-09 安徽圣力达电器有限公司 锚环半自动成型机
CN111001702A (zh) * 2019-11-30 2020-04-14 河南红阳精工科技有限公司 一种涨径式热成形工艺及其石油钻采扶正器成型用模具
CN112672834A (zh) * 2018-09-11 2021-04-16 贝卡尔特公司 具有相关联的模坯保持器的拉延模具
CN114103230A (zh) * 2021-09-27 2022-03-01 佛山科学技术学院 一种可调节面积大小的压实器

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010020666B4 (de) * 2010-05-17 2020-04-16 Tox Pressotechnik Gmbh & Co. Kg Matrize und Werkzeug für ein Nietwerkzeug
CN101920276B (zh) * 2010-09-02 2012-01-04 湖南金龙国际铜业有限公司 用切向连续挤压机连续生产铝包铜管的工艺
DE102015007553A1 (de) 2015-06-16 2016-12-22 Eckold Gmbh & Co Kg Matrize für ein Fügewerkzeug, insbesondere zum Durchsetzfügen

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2261582A1 (de) * 1971-12-21 1973-07-26 Sandvik Ab Pressform od.dgl., insbesondere fuer die verformung metallischer materialien

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2261582A1 (de) * 1971-12-21 1973-07-26 Sandvik Ab Pressform od.dgl., insbesondere fuer die verformung metallischer materialien

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0131426A2 (fr) * 1983-07-08 1985-01-16 BICC Public Limited Company Extrusion de métal
EP0131426A3 (fr) * 1983-07-08 1985-07-31 BICC Public Limited Company Extrusion de métal
EP0196791A1 (fr) * 1985-03-28 1986-10-08 Ngk Insulators, Ltd. Filière de boudineuse pour extruder des corps à structure alvéolaire
FR2637825A1 (fr) * 1988-10-14 1990-04-20 Danfoss As Outil de formage et procede destine a sa fabrication
US20050083488A1 (en) * 2003-10-21 2005-04-21 Huang Ming H. Light device having light concentrating device
CN103433395A (zh) * 2013-09-03 2013-12-11 西安胜智航空科技有限公司 一种形状记忆合金管接头扩径装置
CN103433396A (zh) * 2013-09-03 2013-12-11 西安胜智航空科技有限公司 一种用于形状记忆合金管接头扩径的径向伸缩扩管
CN103433396B (zh) * 2013-09-03 2015-09-09 西安胜智航空科技有限公司 一种用于形状记忆合金管接头扩径的径向伸缩扩管
CN104889185A (zh) * 2015-06-13 2015-09-09 安徽圣力达电器有限公司 锚环半自动成型机
CN112672834A (zh) * 2018-09-11 2021-04-16 贝卡尔特公司 具有相关联的模坯保持器的拉延模具
CN112672834B (zh) * 2018-09-11 2024-03-08 贝卡尔特公司 具有相关联的模坯保持器的拉延模具
CN111001702A (zh) * 2019-11-30 2020-04-14 河南红阳精工科技有限公司 一种涨径式热成形工艺及其石油钻采扶正器成型用模具
CN111001702B (zh) * 2019-11-30 2021-07-02 河南红阳精工科技有限公司 一种涨径式热成形工艺及其石油钻采扶正器成型用模具
CN114103230A (zh) * 2021-09-27 2022-03-01 佛山科学技术学院 一种可调节面积大小的压实器
CN114103230B (zh) * 2021-09-27 2023-11-07 佛山科学技术学院 一种可调节面积大小的压实器

Also Published As

Publication number Publication date
BR8100241A (pt) 1981-08-04
DE3001671A1 (de) 1981-07-23

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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STAA Information on the status of an ep patent application or granted ep patent

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Withdrawal date: 19810620

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Inventor name: SCHMIDT, HORST