EP2218526B1 - Verfahren und Vorrichtung zur Herstellung von rohrförmigen Werkstücken aus einem vorgelochten Hohlblock - Google Patents

Verfahren und Vorrichtung zur Herstellung von rohrförmigen Werkstücken aus einem vorgelochten Hohlblock Download PDF

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Publication number
EP2218526B1
EP2218526B1 EP09015793A EP09015793A EP2218526B1 EP 2218526 B1 EP2218526 B1 EP 2218526B1 EP 09015793 A EP09015793 A EP 09015793A EP 09015793 A EP09015793 A EP 09015793A EP 2218526 B1 EP2218526 B1 EP 2218526B1
Authority
EP
European Patent Office
Prior art keywords
mandrel
manipulator
billet
centring element
borehole
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.)
Not-in-force
Application number
EP09015793A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2218526A1 (de
Inventor
Uwe Muschalik
Klaus Steingiesser
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.)
SMS Group GmbH
Original Assignee
SMS Meer 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 SMS Meer GmbH filed Critical SMS Meer GmbH
Publication of EP2218526A1 publication Critical patent/EP2218526A1/de
Application granted granted Critical
Publication of EP2218526B1 publication Critical patent/EP2218526B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B21D9/00—Bending tubes using mandrels or the like
    • 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
    • B21J13/08—Accessories for handling work or tools
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
    • 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
    • B21J13/08—Accessories for handling work or tools
    • B21J13/10—Manipulators

Definitions

  • the invention relates to a method for producing tubular, long workpieces from a pre-punched hollow block, wherein the hollow block is taken by a block manipulator and spent in the work area of a forging machine, wherein prior to forging the hollow block in the forging machine arranged on a mandrel mandrel a central bore in the block manipulator axially therethrough and further inserted into an inner bore of the hollow block. Furthermore, the invention relates to an apparatus for producing tubular, long workpieces from a pre-punched hollow block.
  • a tubular workpiece can be made by forging from a hollow block by placing the pre-punched hollow block in a forging machine by means of a block manipulator, wherein the hollow block in the forging machine is forged over a mandrel located at the axial end of a mandrel bar.
  • the forging machine has a plurality of radially acting on the hollow block tools or forging jaws.
  • the on the loading side ie before the forging machine, for example, by swiveling supplied or loaded hollow block is gripped and held by the block manipulator, e.g. B. by means of pliers, as is known from the DE 40 16 534 A1 is known.
  • the block manipulator e.g. B. by means of pliers, as is known from the DE 40 16 534 A1 is known.
  • the mandrel rod with the mandrel arranged at the end is driven axially by an actuator and driven through a hollow shaft (central bore) of the block manipulator.
  • the invention is therefore an object of the invention to provide a method and apparatus that allow in a simple manner a centric insertion of the mandrel in the hollow block and thereby exclude deflections of the mandrel as far as possible.
  • the mandrel has at least one centering, wherein the outer diameter of the centering slightly smaller than the inner diameter of the central bore of the block manipulator and wherein the outer diameter of the mandrel bar is smaller than the outer diameter of the centering, and that Mandrel so through the central bore of the Block manipulator is passed through that contact between the outer circumference of the centering and the central bore of the block manipulator is present and that there is no contact between the mandrel and the central bore of the block manipulator.
  • the centering is preferably held during the entire forging in the forging machine axially outside of the hollow block and within the central bore.
  • the inner bore of the hollow block and / or the mandrel are preferably provided prior to insertion of the mandrel into the inner bore of the hollow block with a lubricant or release agent.
  • the inner bore of the hollow block and the mandrel are so designed in terms of their diameter that there is no contact between the mandrel and the inner bore of the hollow block during axial insertion of the mandrel into the inner bore of the hollow block and before the forging process.
  • the apparatus for producing tubular, long workpieces from a pilot-perforated hollow block comprises: a block manipulator having a central bore adapted to grip and axially displace the hollow block, a forging machine and a mandrel having a mandrel disposed thereon for axial passage through the central bore in the Block manipulator and for axial insertion into an inner bore of the hollow block.
  • the device is inventively characterized in that the mandrel bar has at least one centering, wherein the outer diameter of the centering is slightly smaller than the inner diameter of the central bore of the block manipulator and wherein the outer diameter of the mandrel bar is smaller than the outer diameter of the centering.
  • the centering piece is formed according to a preferred embodiment, at least two parts, wherein the at least two parts are arranged concentrically with each other.
  • an inner part in the radial section has a convex outer circumference, which rests against an outer part, which has a corresponding concave inner circumference in the radial section.
  • the centering piece may be provided on its outer circumference with at least one chamfer.
  • the centering piece can be fixed on both sides of the mandrel axially by clamping elements.
  • the diameter of the inner bore of the hollow block is preferably larger than the outer diameter of the mandrel prior to its forging.
  • the mandrel bar with the mandrel is advantageously centered in the hollow shaft of the block manipulator and thus directly at the scene of action with the proposed solution and guided therein during the axial positioning movements of the manipulator and / or the mandrel rod actuator centrically supported over the entire length of the hollow shaft ,
  • the mandrel bar is provided with a centering or centering ring, the outer diameter of which corresponds approximately to the inner diameter of the hollow shaft of the block manipulator.
  • the proposed method and apparatus are advantageously used.
  • the deflection of the relatively long mandrel can be efficiently prevented by the use of the centering or at least considerably minimized.
  • the mandrel can be inserted centrally into the hollow block.
  • FIGS. 1 to 6 is an apparatus for producing tubular workpieces to see, with different stages of the process are shown in chronological order.
  • the device comprises a block manipulator 2 which has two or four tongs 13, 14 for gripping and clamping a hollow block 1 (see FIG. FIGS. 5 and 6 ) having.
  • the block manipulator 2 faces with its loading side of a forging machine 3, in which the hollow block 1 can be forged by radially from outside acting on him forging tools 18.
  • the forging with the forging tools 18 takes place only when in an inner bore 7 (s. Fig. 7 ) of the hollow block 1, a mandrel 5 is placed.
  • the mandrel 5 is arranged at the axial end of a mandrel bar 4.
  • the mandrel rod 4 together with the mandrel 5 is guided through a central bore 6 (hollow shaft) in the block manipulator 2 and inserted into the inner bore 7 when the hollow block 1 is held by the tongs 13, 14.
  • a mandrel manipulator 16 is arranged laterally next to the mandrel rod 4, on which a carriage 17 is arranged for a rotary drive of the mandrel rod 4. According to Fig. 1 the mandrel 5 together with mandrel bar 4 is placed on the supports 15.
  • Fig. 3 then moves the block manipulator 2 back, ie to the mandrel manipulator 16 and threading the mandrel 5 together with mandrel 4 in the central bore 6 of the block manipulator 2 (the central bore 6 is incorporated in a hollow shaft, which is part of the block manipulator 2).
  • the mandrel manipulator 16 itself may have a drive and make the threading.
  • Fig. 5 closes the pivoting of the hollow block 1 at.
  • the hollow block 1 is gripped and clamped by the tongs 13, 14, ie the block manipulator 2 clamps the hollow block 1 in preparation for forging.
  • the forging itself is done according to Fig. 6 , ie the block and mandrel manipulators 2 and 16 move to the forging position.
  • the mandrel 5 is arranged axially in the hollow block 1 so that the forging process with the forging tools 18 can take place above it.
  • FIGS. 1 to 6 So show the sequence sequence of producing a tubular workpiece from the hollow block 1 in time sequence of placing the mandrel 4, preferably on block supports and an additional support with which the machine bed 19 is formed, until threading the mandrel 4 with a subsequently explained centering 8 in the central bore (hollow shaft) of the block manipulator 2 and ultimately the center-based guiding the mandrel bar via its centering in axial movements of the manipulator and / or the mandrel rod actuator, designed as a mandrel manipulator slide.
  • the mandrel bar 4 has at least one centering piece 8 (in the embodiment, it is exactly one centering piece 8). Details are in Fig. 7 represented in which the most important parts of the device can be seen.
  • the outer diameter D Z of the centering piece 8 is slightly smaller than the inner diameter D I of the central bore 6 of the block manipulator 2.
  • the outer diameter D A of the mandrel 4, however, is smaller than the outer diameter D Z of the centering. 8
  • the centering piece 8 consists essentially of two parts, namely a radially inner part 8 'and a concentrically arranged radially outer part 8 "(it should be noted that for assembly-technical reasons, the outer part 8" must be again divided to above the inner part 8 'can be mounted).
  • the inner part 8 ' has a convex outer periphery 9, as in the radial section according to Fig. 7 shows.
  • the dome-like design has the advantage that there is always a centric load in the central bore 6 (hollow shaft) of the block manipulator 2.
  • the inner part 8 ' is clamped in both axial directions by means of clamping elements 11 and 12 Mandrel bar 4.
  • the shifting and in particular threading the Mandrel 4 and thus the centering 8 in or in the central bore 6 is facilitated by a chamfer 10, which is incorporated into the outer part 8 ".
  • the inner wall of the inner bore 7 touches.
  • the wall of the inner bore 7 is usually coated or provided with a lubricant or release agent. Accordingly, when inserting the mandrel 5 into the inner bore 7, an air gap remains between the mandrel and the inner bore, as shown in FIG Fig. 7 is indicated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
EP09015793A 2009-02-11 2009-12-21 Verfahren und Vorrichtung zur Herstellung von rohrförmigen Werkstücken aus einem vorgelochten Hohlblock Not-in-force EP2218526B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009008396 2009-02-11
DE102009052482A DE102009052482A1 (de) 2009-02-11 2009-11-09 Verfahren und Vorrichtung zur Herstellung von rohrförmigen Werkstücken aus einen vorgelochten Hohlblock

Publications (2)

Publication Number Publication Date
EP2218526A1 EP2218526A1 (de) 2010-08-18
EP2218526B1 true EP2218526B1 (de) 2012-02-08

Family

ID=42173483

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09015793A Not-in-force EP2218526B1 (de) 2009-02-11 2009-12-21 Verfahren und Vorrichtung zur Herstellung von rohrförmigen Werkstücken aus einem vorgelochten Hohlblock

Country Status (9)

Country Link
US (1) US8459085B2 (ko)
EP (1) EP2218526B1 (ko)
JP (1) JP5270587B2 (ko)
KR (1) KR101195384B1 (ko)
CN (1) CN101797624B (ko)
AT (1) ATE544544T1 (ko)
DE (1) DE102009052482A1 (ko)
RU (1) RU2429933C1 (ko)
TW (1) TWI409113B (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2853319A1 (de) 2013-09-25 2015-04-01 GFM GmbH Vorrichtung zum Schmieden eines Hohlkörpers aus einem vorgelochten Hohlblock

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DE102011109071A1 (de) * 2011-07-30 2013-01-31 Sms Meer Gmbh Rohrschmiedeverfahren mit urgeformten Hohlblock
AT511745B1 (de) * 2011-08-12 2014-09-15 Gfm Gmbh Vorrichtung zum schmieden eines hohlkörpers
CN104014706B (zh) * 2014-06-05 2015-11-18 燕山大学 一种大吨位无轨锻造操作机提升机构
US9638357B1 (en) * 2015-06-24 2017-05-02 Omax Corporation Mechanical processing of high aspect ratio metallic tubing and related technology
DE102016204209B4 (de) * 2016-03-15 2017-10-05 Schuler Pressen Gmbh Einsetzvorrichtung und Verfahren zum Einsetzen eines Rondenrings in einen Außenring einer Ronde
US11719354B2 (en) 2020-03-26 2023-08-08 Hypertherm, Inc. Freely clocking check valve
CN115698507A (zh) 2020-03-30 2023-02-03 海别得公司 用于具有多功能接口纵向端的液体喷射泵的气缸
CN114833296B (zh) * 2022-05-25 2023-07-25 江苏明越精密高温合金有限公司 一种管坯的制坯设备

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2853319A1 (de) 2013-09-25 2015-04-01 GFM GmbH Vorrichtung zum Schmieden eines Hohlkörpers aus einem vorgelochten Hohlblock

Also Published As

Publication number Publication date
TWI409113B (zh) 2013-09-21
ATE544544T1 (de) 2012-02-15
JP2010184296A (ja) 2010-08-26
CN101797624A (zh) 2010-08-11
US20100199740A1 (en) 2010-08-12
EP2218526A1 (de) 2010-08-18
US8459085B2 (en) 2013-06-11
CN101797624B (zh) 2012-10-10
KR101195384B1 (ko) 2012-10-29
KR20100091882A (ko) 2010-08-19
RU2429933C1 (ru) 2011-09-27
JP5270587B2 (ja) 2013-08-21
DE102009052482A1 (de) 2010-08-19
RU2010104682A (ru) 2011-08-20
TW201029768A (en) 2010-08-16

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