US3690142A - Swaging machine for a continuous swaging of rod-shaped workpieces - Google Patents

Swaging machine for a continuous swaging of rod-shaped workpieces Download PDF

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Publication number
US3690142A
US3690142A US88946A US3690142DA US3690142A US 3690142 A US3690142 A US 3690142A US 88946 A US88946 A US 88946A US 3690142D A US3690142D A US 3690142DA US 3690142 A US3690142 A US 3690142A
Authority
US
United States
Prior art keywords
axis
eccentric
link
hammer
swaging
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.)
Expired - Lifetime
Application number
US88946A
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English (en)
Inventor
Gottfried Blaimschein
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.)
GFM Gesellschaft fuer Fertigungstechnik und Maschinenbau AG
Original Assignee
GFM Gesellschaft fuer Fertigungstechnik und Maschinenbau AG
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 GFM Gesellschaft fuer Fertigungstechnik und Maschinenbau AG filed Critical GFM Gesellschaft fuer Fertigungstechnik und Maschinenbau AG
Application granted granted Critical
Publication of US3690142A publication Critical patent/US3690142A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/26—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
    • 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
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/1956—Adjustable
    • Y10T74/19585—Fixed axes
    • Y10T74/19595—Automatic control

Definitions

  • Each 58 Field of Search ..72/402,404,429, 189,399, chuck comprises a p t rigid h the associated 72/452, 406 hammer, a cylindrical link surrounding the eccentric of the associated shaft, a first guiding element carried by the spider, a second guiding element carried by the [56] References cued link, meshing helical teeth on the guiding elements, UNITED STATES PATENTS and the second guiding elements being held against d l t all It th hafts. 2,903,923 9/1959 Kralowetz ..72/189 meme par 6 6 S 3,165,012 6/1965 2Claims,2Drawing Figures Kralowetz ..72/402 PATENTED 12 I972 3.690.142
  • This invention relates to a swaging machine for a continuous swaging of rod-shaped workpieces, which machine comprises connecting rod-like hammers, which extend radially to the axis of the workpiece and are driven by eccentric shafts that are parallel to said axis, each of said hammers comprising the spider of an elliptic chuck which includes a cylindrical link, which surrounds the eccentric and is slidably guided in the spider transversely to the axis of the hammer, each hammer also comprising a rotatable sliding guide, which is disposed between the eccentric shaft and the workpiece,'and each hammer performing both a radial swaging movement to and from the workpiece and a rocking movement in the plane which extends through the axes of theworkpiece and of the eccentric shaft.
  • Swaging machines are known in which the eccentric shafts for driving the connecting rod-like hammers extend transversely to the axis of the workpiece and in which the axis of rotation of the sliding guide for each hammer is parallel to the associated eccentric shaft.
  • the hammers constitute true connecting rods, which perform a motion that is composed of a thrust movement toward the workpiece and a rocking or oscillating motion about the axis of rotation of the sliding guide so that the hammers do not only shape the workpiece so as to reduce the cross-section thereof but also advance the workpiece.
  • the orientation of the eccentric shafts transversely to the axis of the workpiece necessitates the provision of bevel or angle gear drives for driving the eccentric shafts.
  • Particularly .in machines which .comprise more than two hammers,'these bevel or angle, gear drives involve a relatively complicated and expensive design. The common drive of two or more similar swaging machines arranged one behind the other is also rendered difficult.
  • each hammer comprises a spider of an elliptic chuck which comprises a link that embraces the eccentric and is displaceable transversely to the axis of the hammer.
  • the hammers engage a coupling pin, which is parallel to the eccentric shaft and is adapted to reciprocate to an extent which is determined by the rotation of the eccentric shaft. For this reason, these hammers do not perform a rocking motion in a plane which is normal to the axis of the workpiece and to the axes of the eccentric shafts because these hammers comprise spiders of elliptic chucks in which only the link performs the transverse movement which is required.
  • the reciprocation of the coupling pin imparts to each hammer an oscillating motion in the plane that includes the axis of the eccentric shaft and the axis of the workpiece so that the workpiece is advanced as desired as it is shaped by the hammers although the axes of the eccentric shafts extend parallel to the axis of the workpiece so that simple spur gears may be used for driving the eccentric shafts.
  • the eccentric shafts can be driven by a fairly simple mechanism which includes simple spur gears but the oscillation of the hammers in the plane which includes the axes of the eccentric shafts and the axis of the workpiece, which oscillation is superimposed on the axial motion of the hammers, still requires a considerable structural expenditure. For this reason, that solution is not fully satisfactory.
  • the cooperating guiding elements on one side of the spider and on the link of the elliptic chuck comprise meshing helical teeth and the. guiding element of the link is held against a displacement parallel to the eccentric shaft.
  • the link performs in the spider formed by the hammer an axial motion which is transverse to the axis of the hammer whereas the hammer initially follows only that movement of the link which is in the direction of the axis of the hammer.
  • the link and spider of the elliptic chuck comprise meshing helical teeth
  • a displacement of the link transversely to the axis of the hammer will necessarily result in an additional motion of one of the two meshing parts in the plane which includes the axis of the eccentric shaft.
  • the guiding element of the link is held against a displacement that is parallel to the eccentric shaft, only the hammer itself can perform said additional motion so that the hammer will oscillate as desired.
  • This oscillation of the hammer is enabled because the link is cylindrical and the hammer is guided in the rotatable sliding guide. This results in a comparatively simple design, which hardly adds to the structural expenditure which is anyway required because it is sufficient to provide helical teeth on the guiding elements on one side of the spider and the link of the elliptic chuck.
  • the axes of the cylindrical surfaces of the link and of the spider of the elliptic chuck must coincide with the axis of rotation of the sliding guide.
  • the axial motion of the hammer to and from the workpiece results necessarily in a displacement of the axis of the cylinder relative to the axis of rotation of the sliding guide.
  • Such displacement is also due to the fact that the location of the axis of rotation of the eccentric shaft is changed when the hammer engages the workpiece or the depth of penetration of the hammer into the workpiece is changed.
  • the link of the elliptic chuck is provided on its side which is opposite to the helical teeth with a cylindrical guiding surface, which is coaxial with the helical teeth, the common cylinder axis coincides approximately with the axis-of rotation of the sliding guide for the hammer, and the link of the elliptic chuck consists of two parts, one of which has no helical teeth and is displaceable in the direction of the eccentric shaft.
  • the hammer can perform a pivotal movement relative to the link of the elliptic chuck even when the axis of the cylindrical guiding elements of said link does not exactly agree with the axis of rotation of the sliding guide.
  • FIGS. 1 and 2 are fragmentary sectional views taken on line I-I in FIG. 2 and on line II-II in FIG. 1, respectively, and showing a part of a swaging machine.
  • a machine housing 1 comprises four connecting rodlike hammers 3, which are angularly spaced 90 apart and extend radially to the axis 2 of the workpiece.
  • Each hammer 3 cooperates with a rotatable sliding guide 4 and is driven by an eccentric shaft 5, which is parallel to the axis 2 of the workpiece.
  • the eccentric shafts 5 are eccentrically mounted in rotatable adjusting housings 6, which are rotatable to change the distance from the axes of the eccentric shafts to the axis 2 of the workpiece so that the stroke position of the hammers will be changed too.
  • Each eccentric shaft is driven by a clutch, which is only diagrammatically indicated and permits of a displacement of the eccentric shaft relative to the driving spur gear. Such clutches are known in the art.
  • Each hammer 3 comprises a spider 7 of anelliptic chuck. Guiding elements 8, 9 having a cylindrical inside surface are anchored in said spider.
  • the eccentric 10 of each eccentric shaft 5 is surrounded by a two-part link ll, 12, which is slidable in the spider transversely to the axis of the hammer.
  • the part 12 of the link has a cylindrical outside surface, which conforms to the cylindrical inside surface of the guiding element 9 of the spider.
  • the guiding element 8 of the spider and the guiding element 11 of the link of the elliptic chuck carry meshing helical teeth 13.
  • the cylindrical guiding surfaces of the elements 9 and 12 and the helical teeth 13 have a common axis, which approximately coincides with the axis of rotation of the sliding guide 4.
  • the guiding element 11 of the link of the elliptic chuck is held against a displacement parallel to the eccentric shaft 5.
  • the element 12 can move in this direction relative to the part 11.
  • the two elements ll, 12 of the link of the elliptic chuck are rigidly coupled to move in unison in a direction whichis transverse to the eccentric shaft.
  • the hammers 3 are provided with two bifurcated guide extensions 14, which straddle a stationary slide rail 15.
  • the hammers can oscillate only in the planes which are defined by the axes of the eccentric shaft and the axis 2 of the workpiece whereas a movement transverse to the axis of the workpiece and of the eccentric shaft is precluded.
  • the twopart link 11, 12 reciprocates in the spider 7 in the direction of the arrow 16 in FIG. 2 and the hammer is moved radially to and from the workpiece at the same time.
  • the reciprocating relative axial movement of the link 1 1, 12 also results in a reciprocating rocking motion of the hammer 3 in the direction of the arrow 17 in FIG. 1 because the guiding element 11 of the link is supported at its end in the adjusting housing 6 and is thus held against a movement parallel to the eccentric shaft.
  • the axis of the cylindrical guiding surfaces does not coincide with the axis of rotation of the sliding guide 4, the division of the link into two parts enables a very slight movement of the element 12 of the link in a direction which is parallel to the eccentric shaft.
  • a swaging machine for a continuous swaging of rod-shaped workpieces which comprises means defining a feeding path for a workpiece, which feeding path has an axis,
  • a plurality of elliptic chucks each of which operatively connects one of said eccentric shafts to the hammer associated therewith and is arranged to transform a rotation of said eccentric shaft into a radial swaging motion of the hammer to and from said axis of said feeding path and into an oscillating rocking motion in a plane which includes said axis of said feeding path and the axis of the associated eccentric shaft,
  • each of said elliptic chucks comprising a spider which is rigid with the associated hammer, a cylindrical link which surrounds said eccentric of the associated eccentric shaft, a first guiding element carried by said spider and provided with first helical teeth, and a second guiding element carried by said link and provided with second helical teeth meshing with said first helical teeth,
  • said machine also comprising means which hold said second guiding elements against a displacement parallel to said eccentric shafts.
  • said second helical teeth with a cylindrical guiding said link consists of two parts, one of which is said 7 surface, second guiding element and the other of which is said cylindrical guiding surface and said s d h lidisplaceable in the axial direction of said eccentric cal teeth have a common axis which coincides ap- 5 shaft proximately with the axis of rotation of the as-

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Press Drives And Press Lines (AREA)
US88946A 1969-12-19 1970-11-12 Swaging machine for a continuous swaging of rod-shaped workpieces Expired - Lifetime US3690142A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT1181869A AT293145B (de) 1969-12-19 1969-12-19 Schmiedemaschine zum Durchlaufschmieden strang- bzw. stangenförmiger Werkstücke

Publications (1)

Publication Number Publication Date
US3690142A true US3690142A (en) 1972-09-12

Family

ID=3630840

Family Applications (1)

Application Number Title Priority Date Filing Date
US88946A Expired - Lifetime US3690142A (en) 1969-12-19 1970-11-12 Swaging machine for a continuous swaging of rod-shaped workpieces

Country Status (5)

Country Link
US (1) US3690142A (de)
JP (1) JPS492670B1 (de)
AT (1) AT293145B (de)
FR (1) FR2071927B1 (de)
GB (1) GB1262600A (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3871223A (en) * 1973-01-10 1975-03-18 Gfm Fertigungstechnik Swaging machine
US3888104A (en) * 1973-01-12 1975-06-10 Bernd Ribback Forging machine
US3889514A (en) * 1973-01-10 1975-06-17 Gfm Fertigungstechnik Swaging machine
US3908434A (en) * 1973-04-04 1975-09-30 Bernd Ribback Hammer forging device
US4497195A (en) * 1981-11-16 1985-02-05 Firma Gfm Gesellschaft Fur Fertigungstechnik Und Maschinenbau Gesellschaft M.B.H. Swaging machine
GB2388665A (en) * 2002-05-16 2003-11-19 Dynamic Mt Ag Electronic spirometer having pressure sensor coupled to inlet tube
US20070213837A1 (en) * 2005-02-24 2007-09-13 Ferreri Annie L System and Method for Determining Implanted Device Orientation

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2903923A (en) * 1956-09-18 1959-09-15 Kralowetz Bruno Stretch-forging machine
US3165012A (en) * 1961-12-21 1965-01-12 Kralowetz Bruno Forging machine
US3224244A (en) * 1963-05-20 1965-12-21 Kralowetz Bruno Swaging machine
US3460370A (en) * 1966-05-23 1969-08-12 Bruno Kralowetz Apparatus for swaging continuous stock
US3572077A (en) * 1968-05-03 1971-03-23 Bruno Kralowetz Apparatus for a continuous swaging of rod-shaped workpieces
US3596497A (en) * 1968-06-25 1971-08-03 Gfm Fertigungstechnik Apparatus for the continuous swaging of continuous workpieces

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2903923A (en) * 1956-09-18 1959-09-15 Kralowetz Bruno Stretch-forging machine
US3165012A (en) * 1961-12-21 1965-01-12 Kralowetz Bruno Forging machine
US3224244A (en) * 1963-05-20 1965-12-21 Kralowetz Bruno Swaging machine
US3460370A (en) * 1966-05-23 1969-08-12 Bruno Kralowetz Apparatus for swaging continuous stock
US3572077A (en) * 1968-05-03 1971-03-23 Bruno Kralowetz Apparatus for a continuous swaging of rod-shaped workpieces
US3596497A (en) * 1968-06-25 1971-08-03 Gfm Fertigungstechnik Apparatus for the continuous swaging of continuous workpieces

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3871223A (en) * 1973-01-10 1975-03-18 Gfm Fertigungstechnik Swaging machine
US3889514A (en) * 1973-01-10 1975-06-17 Gfm Fertigungstechnik Swaging machine
US3888104A (en) * 1973-01-12 1975-06-10 Bernd Ribback Forging machine
US3908434A (en) * 1973-04-04 1975-09-30 Bernd Ribback Hammer forging device
US4497195A (en) * 1981-11-16 1985-02-05 Firma Gfm Gesellschaft Fur Fertigungstechnik Und Maschinenbau Gesellschaft M.B.H. Swaging machine
GB2388665A (en) * 2002-05-16 2003-11-19 Dynamic Mt Ag Electronic spirometer having pressure sensor coupled to inlet tube
GB2388665B (en) * 2002-05-16 2005-12-21 Dynamic Mt Ag Portable electronic spirometer
US20070213837A1 (en) * 2005-02-24 2007-09-13 Ferreri Annie L System and Method for Determining Implanted Device Orientation

Also Published As

Publication number Publication date
GB1262600A (en) 1972-02-02
JPS492670B1 (de) 1974-01-22
FR2071927A1 (de) 1971-09-24
FR2071927B1 (de) 1974-02-15
AT293145B (de) 1971-09-27
DE2055593A1 (de) 1971-06-24

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