US3893328A - Swaging tool - Google Patents

Swaging tool Download PDF

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Publication number
US3893328A
US3893328A US468398A US46839874A US3893328A US 3893328 A US3893328 A US 3893328A US 468398 A US468398 A US 468398A US 46839874 A US46839874 A US 46839874A US 3893328 A US3893328 A US 3893328A
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US
United States
Prior art keywords
tool
groove
bottom wall
swaging
cross
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
US468398A
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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 US3893328A publication Critical patent/US3893328A/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
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/02—Dies or mountings therefor

Definitions

  • the tool is intended for use in a continuous swaging [30] Foreign Application P i i D machine for swaging bar stock which is four-sided in M 17 1973 Austria 4341/73 cross-section.
  • the tool has a hammer face formed ay with a continuous groove having an entrance portion which is V-shaped in cross-section, and an exit portion [3] having lateral g beads and a flat bottom. which 406 merges continuously into said edge beads. Said enl 0 care 6 trance portion merges continuously into said flat bottom.
  • Such tools are mainly used to make bar stock which is square in cross-section and in this case enable a thorough swaging particularly adjacent to the diagonals.
  • a large deformation of the diagonals is highly significant because discontinuities and impurities tend to accumulate adjacent thereto and this must be counteracted.
  • the starting stock to be subjected to continuous swaging consists in most cases of continuously cast billets, which contain dendrites extending at right angles to the outside surfaces of the square cross-section. These dendrites are formed during the casting operation. They meet adjacent to the diagonals of the cross-section and result in undesired defects in the structure. Owing to the provision of the wedge-shaped notch which merges into a flat exit end. the edge portions of the starting stock are swaged to enter the side faces of the resulting square continuous stock so that the largest reduction of material and a satisfactory structure are obtained par ticularly adjacent to the diagonals of the cross-section.
  • the invention substantially in that the notch is extended in length to form a continuous groove in the tool, and the bottom of the groove merges continuously into lateral edge beads adjacent to the flat portion of the groove.
  • the use of the continuous groove results in an improved flow and spreading of the material, and the edge beads provide for a good guidance of the workpiece also at the exit.
  • the edge beads enable a controlled shaping of the transition from one side face to the other with such a curvature that a formation of sharp edges is avoided. As a result. there is no longer a danger of edge cracks or the like during a further processing of the swaged bar stock.
  • edge beads have inside surfaces which contact the workpiece and which include with the flat bottom of the groove an angle of at least 135 because that design avoids an overlap of the ranges of action of adjacent tools adjacent to the edges of the bar stock so that a scraping on the stock is avoided.
  • FIG. I is a partly sectional side elevation
  • FIG. 2 is a top plan view
  • FIG. 3 is an end view and FIGS. 4 to 6 are transverse sectional views taken through the groove in the tool on lines lV-IV. VV, and VI-VI in FIG. 1.
  • the tool 1 provided according to the invention for use in continuous swaging machines has a groove 2, which is elongated in the direction of travel of the workpiece and extends longitudinally over the entire hammer face of the tool.
  • the groove 2 merges from an initial V-shape or wedge shape 3 at its open entrance. into a flat bottomed shape 3b and its included angle in creases from about to I80".
  • the flat bottom wall 4 of the groove merges into projecting lateral edge beads 5.
  • the special shape of the groove in that tool 1 permits of a making of square bar stock to a highly precise shape.
  • the edge portions 6 of the initial cross-section 7 are swaged to enter the side faces 8 of the final crosssection. (The initial and final cross-sections are indicated by dash-dot lines in FIG. 3). This results in the desired large reduction adjacent to the diagonals.
  • the swaged bar stock Owing to the action of the edge beads whose inside surfaces constitute the side walls of the groove exit and include an oblique angle of at least with the bottom of the groove, the swaged bar stock has well rounded transitions from one side face to the other so that there will be no risk of a formation of edge cracks during a further processing.
  • a tool for use in a swaging machine for swaging four-sided bar stock comprising a tool member having a hammer face formed with an elongated groove open in both longitudinal directions. the cross section of said groove at one longitudinal end being V- shaped, and said groove having a flat bottom wall at the other longitudinal end. lateral bead portions of said tool member projecting from said bottom wall at the other longitudinal end of said groove and constituting side walls of saidgroove. said -shaped cross section merging along said groove into said bottom wall and said side walls.
  • each of said side walls and said bottom wall define an oblique angle of at least l35.
  • a tool arrangement for a swaging machine comprising two pairs of tools as set forth in claim 1, hammer faces of the tool members in each pair being directed toward each other. the hammer faces of said two pairs of tools jointly bounding a path for the bar stock to be swaged, the tool members of each pair being adapted to be moved toward and away from each other transversely to said path, said grooves of said tool members being parallel to each other and to said path.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
US468398A 1973-05-17 1974-05-09 Swaging tool Expired - Lifetime US3893328A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT434173A AT320383B (de) 1973-05-17 1973-05-17 Werkzeug für Durchlaufschmiedemaschinen

Publications (1)

Publication Number Publication Date
US3893328A true US3893328A (en) 1975-07-08

Family

ID=3562749

Family Applications (1)

Application Number Title Priority Date Filing Date
US468398A Expired - Lifetime US3893328A (en) 1973-05-17 1974-05-09 Swaging tool

Country Status (5)

Country Link
US (1) US3893328A (enrdf_load_stackoverflow)
JP (1) JPS5019656A (enrdf_load_stackoverflow)
AT (1) AT320383B (enrdf_load_stackoverflow)
DE (1) DE2419555A1 (enrdf_load_stackoverflow)
FR (1) FR2229482A1 (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4578983A (en) * 1982-12-01 1986-04-01 Hitachi, Ltd. Press type method of and apparatus for reducing slab width
US5046344A (en) * 1990-01-19 1991-09-10 United Engineering, Inc. Apparatus for sizing a workpiece
EP3281719A4 (en) * 2015-04-06 2018-12-19 Hitachi Metals, Ltd. Hot forging die and hot forging method
EP3281720A4 (en) * 2015-04-06 2018-12-19 Hitachi Metals, Ltd. Hot forging die and hot forging method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58135189A (ja) * 1982-02-04 1983-08-11 積水化学工業株式会社 金属折版用断熱材
JPS6186495U (enrdf_load_stackoverflow) * 1984-11-14 1986-06-06
CN111069492B (zh) * 2019-12-31 2022-11-15 中钢集团邢台机械轧辊有限公司 一种离心机用冷型毛坯锻造方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3114276A (en) * 1956-07-31 1963-12-17 Kocks Gmbh Friedrich Device for drawing billet and bar stock

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3114276A (en) * 1956-07-31 1963-12-17 Kocks Gmbh Friedrich Device for drawing billet and bar stock

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4578983A (en) * 1982-12-01 1986-04-01 Hitachi, Ltd. Press type method of and apparatus for reducing slab width
US5046344A (en) * 1990-01-19 1991-09-10 United Engineering, Inc. Apparatus for sizing a workpiece
EP3281719A4 (en) * 2015-04-06 2018-12-19 Hitachi Metals, Ltd. Hot forging die and hot forging method
EP3281720A4 (en) * 2015-04-06 2018-12-19 Hitachi Metals, Ltd. Hot forging die and hot forging method

Also Published As

Publication number Publication date
JPS5019656A (enrdf_load_stackoverflow) 1975-03-01
FR2229482A1 (enrdf_load_stackoverflow) 1974-12-13
DE2419555A1 (de) 1974-12-05
AT320383B (de) 1975-02-10

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