EP0476350A1 - Rundknetmaschine - Google Patents

Rundknetmaschine Download PDF

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Publication number
EP0476350A1
EP0476350A1 EP91114132A EP91114132A EP0476350A1 EP 0476350 A1 EP0476350 A1 EP 0476350A1 EP 91114132 A EP91114132 A EP 91114132A EP 91114132 A EP91114132 A EP 91114132A EP 0476350 A1 EP0476350 A1 EP 0476350A1
Authority
EP
European Patent Office
Prior art keywords
dies
swaging
spindle
hammers
die
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Withdrawn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
EP91114132A
Other languages
English (en)
French (fr)
Inventor
Tomisaburo Morikawa
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.)
JAPAN ROYAL PRECISION Co Ltd
Original Assignee
JAPAN ROYAL PRECISION Co Ltd
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 JAPAN ROYAL PRECISION Co Ltd filed Critical JAPAN ROYAL PRECISION Co Ltd
Publication of EP0476350A1 publication Critical patent/EP0476350A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
    • B21J7/02—Special design or construction
    • B21J7/14—Forging machines working with several hammers
    • B21J7/145—Forging machines working with several hammers the hammers being driven by a rotating annular driving member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
    • B21J7/02—Special design or construction
    • B21J7/14—Forging machines working with several hammers
    • B21J7/16—Forging machines working with several hammers in rotary arrangements

Definitions

  • the present invention relates to a swaging machine, in particular, to a swaging machine enabling to improve its accuracy of finishing and machining works.
  • the swaging machine has been used in which small bars and round rods are put into (set in) a machining portion constructed by several dies which strike the works so as to form them of desired shapes.
  • Fig. 10 is a front view showing an example of the machining head 1 of the conventional swaging machine.
  • the conventional swaging machine shown in Fig. 10 it comprises a spindle 2, a machining portion 11 for machining the work placed on the spindle 2, a plurality of dies 5 slidably placed around the machining portin 11, swaging hammers 7 slidably arrange around the dies 5 so as to press them functioning their operations, wedges 4 inserted between the dies 5 and the swaging hammer 7 so as to control the size of the machining portion 11, limit plates 73 restricting the strokes of the swaging hammers 7, and a plurality of rollers 82 and an outer ring 8.
  • the conventional swaging machine above has a die driving arranged on the outer periphery of the swaging hammer 7, and springs 54 and 74 for urging outside the dies 5 and the swaging hammer 7.
  • the wedges 4 are moved along the axial direction to control the positions of the dies 5 and accordingly the size of the machining portion 11 is set at a suitable one to the diameter of the work.
  • movement strokes of the dies 5 are restricted by a number of limit plates 73 inserted between the spindle 2 and the swaging hammer 7.
  • outside movement of the dies 5 is restricted or controlled by a clearance g i formed between the swaging hammer 7 and the limit plate 73, and centralizing movement of the dies 5 is by a gap g 2 between the swaging hammer 7 and the limit plate 73. It is noted that the movement of dies 5 along their outside direction is no problem.
  • the gravity functions on the dies (I) and (II), respectively placed at their upper positions along the direction toward the center of the machining head 1.
  • the gravity functions as an outside directed force to them.
  • the present invention to provide a swaging machine for directly restricting the movement stroke of the dies in order to solve the technical problem of the prior art and attaining a swaging machining with a high machining precision.
  • the swaging machine has limit plates restricting the strokes of dies and functions cooperatively with the wedges, which plates are arranged between a spindle of the machining head of the swaging machine and the dies.
  • the wedges and dies are driven and move toward the center.
  • the distance of movement of the dies is limited to a fixed one without being effected of changes of machining reaction and spring reaction.
  • the limit plates as well as the wedges cooperatively move in order to keep always the gap distance between the dies and the limit plates at a fixed one.
  • Fig. 1 is a front view of the important portion of the swaging machine according to the present invention
  • Fig. 2 is a section taken along a line A-A of Fig. 1
  • Fig. 3 is a partly enlarged view of Fig. 1
  • Fig. 4 is a section taken along a line B-B of Fig. 3
  • Fig. 5 is a section taken along a C-C of Fig. 4
  • Fig. 6 is a perspective view of an example of a wedge holding member
  • Fig. 7 is a perspective view of an example of the wedge
  • Fig. 8 is a perspective view of an example of the die
  • Fig. 9 is a perspective view of an example of the limit plate for the die
  • Fig. 10 is a front view of an example of the machining head of the conventional swaging machine.
  • a cylindrical or hollow spindle 2 in the machining head 1 has a cross groove 21 formed on its surface.
  • a sliding shaft 22 is contained in the hollow of the cylindrical spindle 2 through bearings.
  • a wedge supporting member 3 fixed on a front end portion of the sliding shaft 22 has a cross groove 31 of a section: T as shown in Fig. 6 formed thereon.
  • the wedge 4 as shown in Fig. 7 of a shape of T in plane and consists of a head portion 41 and an operative portion 42.
  • the operative portion 42 has a side tapered at a slant a head 41 of the wedge 4 is slidably installed in the groove 31 of the wedge supporting member 3.
  • the die 5 has a cut-out portion 51 of a section of an arc formed at its front end and has a shape of a block slidably installed in the groove 21 of the hollow spindle 2.
  • the cut-out portions 51 of respective dies function as an element of a machining portion 11 of a circular shape.
  • the die 5 has a surface 52 opposing to the cut-out portion 51, which surface is slanted at an angle a of the slanted face 43 of the wedge 4.
  • the die 5 has a side face provided with a groove 53 extending in parallel with the slanted face 52.
  • Springs 54 are inserted between two adjacent dies 4 in order to press always the dies 4 toward the wedges 4.
  • the limit plate 6 for the dies 5 is slidably inserted between the groove 53 of the dies 5 and a groove 23 so formed in the spindle 2 as to oppose the groove 53.
  • the limit plate 6 consists of a die fitting portion 61 fitted into the groove 53 of the die 5, a spindle fitting portion 62 fitted into the groove 23 of the spindle 2, and an engagement 63 slidably fitted in the groove 31 of the wedge supporting member 3 together with the wedge 4.
  • the die fitting portion 61 has an upper face 64 having an angle a identical with that of the slanted face 41 of the wedge 4.
  • a width of the groove 53 of the die 5 is determined so as to leave when the die fitting portion 61 of the die limit plate 6 is fitted into the groove 53, a gap g 3 between the slanted face and a side (upper face) of the groove 53, which gap g 3 is substantially identical with the gap gi formed between the hammer limit plate 73 and the swaging hammer 7, and another gap g 4 between the lower face of the die limit plate 6 and another side (lower face) of the groove 53, which gap g 4 is substantially equal to the gap g 2 .
  • the swaging hammer 7 is slidably installed in the groove 21 of the hollow spindle 2 through the wedge 4 has a flat shape of substantial T and a front end portion 71 of a convex shape.
  • the hammer limit plate 73 is slidably inserted between the groove 72 formed at the side face of the swaging hammer 7 and another groove 24 formed in the hollow spindle 2.
  • Springs 74 are installed between the spindle 2 and the swaging hammer 7 so as to urge constantly the swaging hammer 7 outward.
  • An outer ring 8 is made of wear resistance material.
  • a number of rollers 82 contained and arranged at a regular interval in the roller cage 81 are placed between the outer ring 8 and the hollow spindle 2. Respective rollers 82 come in contact in line with an outer periphery face of the spindle 2 and an inner periphery face of the outer ring 8.
  • a flywheel 83 is integrally installed on the outer periphery of the outer ring 8.
  • the swaging hammer 7 displaces toward the center of the machining head 1 against a force of the spring 74 when the roller 82 rides on the convex 71 of the swaging hammer 7. thus the wedge 4 and the dies 5 are driven to move toward the center striking and machining the work set in the machining portion 11.
  • the rollers 82 is disengaged from the convex 71 of the swaging hammer 7, these rollers immediately return to their original positions by force of the springs 54 and 74.
  • the size of the machining portion 11 can be controlled by advancing or backing the wedge 4.
  • dies limit plates 6 are placed between the spindle 2 and the dies 5 in order to make a gap g 3 between the dies 5 and the dies limit plate 6.
  • the gap g 3 is used to control the strokes of the dies 5 moving toward the center portion of the dies 5, so that it is possible to keep the movement distance of the dies 5 constantly at an uniform one.
  • the dies limit plate 6 attached to the wedge supporting member 3 moves together with the wedge 4, as a result it is possible to always keep the gap g 3 between the slanted face 64 of the dies limit plate 6 and the die 5 at a predetermined distance.
  • the spindle 2 is stable and the outer ring 8 rotates. It is apparent, however, that the present invention can carry out in another aspect in which the outer ring 8 is stable and the spindle 2 is rotary.
  • the swaging machine of the present invention has four dies 5 arranged around the hollow spindle 2, however, it is possible to select the number of the die to two and three, and to suitably and slightly change the structure of respective parts of the swaging machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
EP91114132A 1990-09-07 1991-08-23 Rundknetmaschine Withdrawn EP0476350A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP235752/90 1990-09-07
JP2235752A JP2887513B2 (ja) 1990-09-07 1990-09-07 スウエージング加工装置

Publications (1)

Publication Number Publication Date
EP0476350A1 true EP0476350A1 (de) 1992-03-25

Family

ID=16990707

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91114132A Withdrawn EP0476350A1 (de) 1990-09-07 1991-08-23 Rundknetmaschine

Country Status (2)

Country Link
EP (1) EP0476350A1 (de)
JP (1) JP2887513B2 (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2755042A1 (fr) * 1996-10-24 1998-04-30 Lemforder Nacam Sa Procede d'obtention de cannelures sur un arbre
CN1049374C (zh) * 1992-12-26 2000-02-16 吉田桂一郎 在旋锻机上的加工方法及装置
DE19955323B4 (de) * 1999-11-17 2007-11-29 Volkswagen Ag Rundknetmaschine mit gleitgelagerter Werkzeuganordnung
DE19955321B4 (de) * 1999-11-17 2008-02-07 Volkswagen Ag Rundknetmaschine mit hydraulischem Kraftausgleich
DE19952229B4 (de) * 1999-10-29 2008-02-07 Volkswagen Ag Rundknetmaschine
DE19954210B4 (de) * 1999-11-11 2008-04-03 Volkswagen Ag Rundknetmaschine
DE102007031482A1 (de) * 2007-07-06 2009-01-08 Otto Bihler Maschinenfabrik Gmbh & Co Kg Ringpresse
DE10341716B4 (de) * 2003-03-25 2009-12-24 Forschungsgesellschaft Umformtechnik Mbh Vorrichtung zum radialen Umformen von stab-, rohr- oder drahtförmigen Werkstücken
WO2011124487A1 (de) * 2010-04-09 2011-10-13 Felss Gmbh Werkzeugeinheit einer rundknetmaschine
CN102773305A (zh) * 2012-08-13 2012-11-14 李德昌 一种管材锥度锥方管机及装配工艺及其加工方法
US20130055779A1 (en) * 2010-04-09 2013-03-07 Martin Hork Tool unit of a rotary swaging machine
CN107626870A (zh) * 2017-10-25 2018-01-26 平阳县尚伟笔业有限公司 用于加工笔头的动力头装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1955535A (en) * 1930-12-08 1934-04-17 American Chain & Cable Co Metal working machine
US2443874A (en) * 1944-01-21 1948-06-22 Smith Samuel Rotary swaging machine
US2636405A (en) * 1947-03-18 1953-04-28 Smith Samuel Rotary swaging machine
US2746321A (en) * 1952-07-01 1956-05-22 Smith Samuel Rotary swaging machines
DE2452819A1 (de) * 1974-11-07 1976-05-20 Mueller Heinrich Masch Schliesselemente fuer rundknetmaschinen
DE3144981A1 (de) * 1981-11-12 1983-05-19 Fa. Heinrich Müller, 7530 Pforzheim Sattelrundknetmaschine mit platten zur radialen zwangsfuehrung der werkzeuge
DE3202506A1 (de) * 1982-01-27 1983-09-01 Fa. Heinrich Müller, 7530 Pforzheim Sattelrundknetmaschine in 4-stoesselbauform

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1955535A (en) * 1930-12-08 1934-04-17 American Chain & Cable Co Metal working machine
US2443874A (en) * 1944-01-21 1948-06-22 Smith Samuel Rotary swaging machine
US2636405A (en) * 1947-03-18 1953-04-28 Smith Samuel Rotary swaging machine
US2746321A (en) * 1952-07-01 1956-05-22 Smith Samuel Rotary swaging machines
DE2452819A1 (de) * 1974-11-07 1976-05-20 Mueller Heinrich Masch Schliesselemente fuer rundknetmaschinen
DE3144981A1 (de) * 1981-11-12 1983-05-19 Fa. Heinrich Müller, 7530 Pforzheim Sattelrundknetmaschine mit platten zur radialen zwangsfuehrung der werkzeuge
DE3202506A1 (de) * 1982-01-27 1983-09-01 Fa. Heinrich Müller, 7530 Pforzheim Sattelrundknetmaschine in 4-stoesselbauform

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1049374C (zh) * 1992-12-26 2000-02-16 吉田桂一郎 在旋锻机上的加工方法及装置
FR2755042A1 (fr) * 1996-10-24 1998-04-30 Lemforder Nacam Sa Procede d'obtention de cannelures sur un arbre
EP0841111A1 (de) * 1996-10-24 1998-05-13 Lemforder Nacam S.A. Verfahren zum Herstellen von Verzahnungen auf einer Welle
DE19952229B4 (de) * 1999-10-29 2008-02-07 Volkswagen Ag Rundknetmaschine
DE19954210B4 (de) * 1999-11-11 2008-04-03 Volkswagen Ag Rundknetmaschine
DE19955323B4 (de) * 1999-11-17 2007-11-29 Volkswagen Ag Rundknetmaschine mit gleitgelagerter Werkzeuganordnung
DE19955321B4 (de) * 1999-11-17 2008-02-07 Volkswagen Ag Rundknetmaschine mit hydraulischem Kraftausgleich
DE10341716B4 (de) * 2003-03-25 2009-12-24 Forschungsgesellschaft Umformtechnik Mbh Vorrichtung zum radialen Umformen von stab-, rohr- oder drahtförmigen Werkstücken
DE102007031482A1 (de) * 2007-07-06 2009-01-08 Otto Bihler Maschinenfabrik Gmbh & Co Kg Ringpresse
WO2011124487A1 (de) * 2010-04-09 2011-10-13 Felss Gmbh Werkzeugeinheit einer rundknetmaschine
CN102834199A (zh) * 2010-04-09 2012-12-19 菲尔斯有限责任公司 旋锻机的工具单元
US20130055779A1 (en) * 2010-04-09 2013-03-07 Martin Hork Tool unit of a rotary swaging machine
CN102834199B (zh) * 2010-04-09 2015-07-29 菲尔斯有限责任公司 旋锻机的工具单元
US9149861B2 (en) 2010-04-09 2015-10-06 Felss Gmbh Rotary swage tool unit with easy accessible tool space
CN102773305A (zh) * 2012-08-13 2012-11-14 李德昌 一种管材锥度锥方管机及装配工艺及其加工方法
CN107626870A (zh) * 2017-10-25 2018-01-26 平阳县尚伟笔业有限公司 用于加工笔头的动力头装置

Also Published As

Publication number Publication date
JPH04118137A (ja) 1992-04-20
JP2887513B2 (ja) 1999-04-26

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