US3867834A - Forging press having adjustable column guides - Google Patents

Forging press having adjustable column guides Download PDF

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Publication number
US3867834A
US3867834A US349085A US34908573A US3867834A US 3867834 A US3867834 A US 3867834A US 349085 A US349085 A US 349085A US 34908573 A US34908573 A US 34908573A US 3867834 A US3867834 A US 3867834A
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US
United States
Prior art keywords
intermediate cross
cross
column
bushes
columns
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
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US349085A
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English (en)
Inventor
Helmut Robra
Heinz Schmoll
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Schloemann AG
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Schloemann AG
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Filing date
Publication date
Application filed by Schloemann AG filed Critical Schloemann AG
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Publication of US3867834A publication Critical patent/US3867834A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/02—Special design or construction
    • 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
    • B21J13/04—Frames; Guides

Definitions

  • each column has two parallel, opposed guide surfaces which are substantially parallel to the plane containing the axis of the respective column and the axis of the diagonally opposite column.
  • the guide surfaces engage vertically adjustable wedge-shaped members which are supported in two-part bushes with no gaps between the wedge-shaped members and the respective support surfaces of the bushes.
  • the invention relates to a forging press having a frame comprising a top cross-member, a bottom crossmember and four columns interconnecting the top and bottom cross-members, and an intermediate crossmember through which the columns pass for guided relative sliding in a vertical direction between the columns and the intermediate cross-member.
  • each column has two parallel, opposed guide surfaces which are substantially parallel to the plane containing the axis of the respective column and the axis of the diagonally opposite column.
  • the drive of the forging press can be above or below the floor.
  • the columns may have upper and lower parts of circular crosssection and be connected to the top cross-member and to the bottom cross-member by means of nuts; in another construction, the press frame may be pre-stressed with tie members under tension interconnecting the top and bottom cross-members and are surrounded by members under compression which act as the columns referred to above.
  • top and bottom cross-members may be referred to as top and bottom platens; if the intermediate member is stationary, it may be referred to as a table platen, and when it is movable, it may be referred to as a travelling platen.
  • the guiding arrangement may be referred to as cross-thread or diagonal guiding, and the guided part of the column may be of rectangular or square cross-section.
  • Fixed and adjustable column guides on forging presses are known. They may be circular cross-section guides constructed as'ordinary bushes. It is also possible to use circular cross-section guides whose bushes are constructed as so-called ball cups which have spherical support surfaces on their exterior. Such ball cups have the advantage of avoiding edge or canting pressures which result from the non-symmetrical loading of the press. To compensate for wear, slight re-adjustability of the guides by using conical or split bushes is possible in both cases.
  • the compression members referred to above which act as spacer sleeves which are tightened against the top and bottom cross-members by means of the tie members.
  • the spacer sleeves of these designs may be of polygonal cross-section and can have adjustable guides.
  • a forging press having a frame comprising a top crossmember, a bottom cross-member and four columns interconnecting the top and bottom cross-members, and an intermediate cross-member through which the columns pass for guided relative sliding in a vertical direction between the columns and the intermediate crossmember, each column having two parallel, opposed guide surfaces which are substantially parallel to the plane containing the axis of the respective column and the axis of the diagonally opposite column, the guide surfaces engaging and being slidable relative to respective vertically adjustable wedge-shaped members which have guide surfaces substantially parallel to said plane and are supported by multi-part bushes with no substantial gaps between the wedge-shaped members and the respective support surfaces of the bushes which support the wedge-shaped members.
  • the invention can provide a guidance arrangement which is always correctly adjusted despite different temperatures of pressure fluid cylinders, the intermediate cross-member and the top cross-member. If the press has an under-floor drive, expansion of the top cross-member can be assumed to occur radially from the axis due to temperature differences; the guided column may, however, move freely in the radial direction from the axis of the press. If the press columns are differently spaced and such spacing necessarily varies with changing temperature differences, the guiding system in accordance with the invention need not impose any force on the column guides and the columns can always be accurately guided in any operating state and without additional clearances due to the vertically adjustable wedge-shaped members which can be guided in guides that may be manufactured with great accu racy.
  • the bushes will be mounted on the intermediate cross-member and are preferably mounted in circular bores in the intermediate cross-member and are surrounded on all sides by such bores.
  • the circular external shape of the bushes and their arrangement in corresponding bores in the intermediate cross-member simplifies manufacture.
  • the asymmetrical forces resulting from the forging operation act in the form of bending stresses on the columns in the same way as previously.
  • the bushes are suitably two-part bushes and the wedge-shaped members can be wedge strips. If the bush is a two-part bush, the parts preferably engage along one or more parting planes which is (are) substantially parallel to the surfaces on the bush which support the respective wedge-shaped members. As the joints of the two-part bushes are offset by about 90 relative to the support surfaces, it is possible for the support surfaces to be produced by simple mechanical means in the appropriate bush half while the wedgeshaped member is supported (and guided) in the undivided part of the bush.
  • FIG. 1 is a partial view of a forging press with an under-floor drive, the guide being shown in section;
  • FIG. 2 shows four different horizontal cross-sections (A-B, C-D, E-F and G-I-I, as indicated in FIG. 1, E-F and 6-H also being indicated in FIG. 3) through the columns and guides; and
  • FIG. 3 is a vertical section through the adjustable guides.
  • a stationary table platen 1 of a forging press of fourcolumn construction with an under-floor drive is supported on a foundation 2.
  • a downwardly directed stationary piston 3 is mounted on the table platen 1 while a main drive cylinder 4, which co-operates with the piston 3, is provided in a bottom cross-member in the form of a bottom or cylinder platen 5.
  • the cylinder platen 5 is connected via columns 6 to a top crossmember or platen 7 by means of column nuts 8.
  • cylinder platen 5 the columns 6 and the top platen 7 form a movable press frame.
  • a bottom die 9 of the press is carried by the table platen I while a top die 10 is carried by the top platen 7.
  • the columns 6, which function as tie elements for the press frame, are disposed in a rectangle, as shown in FIG. 2.
  • the successive workpieces, not shown, are passed in between one of the wider-spaced pairs of columns.
  • the columns 6 have upper and lower parts of circular cross-section, but the guiding parts of the columns 6, i.e. the parts adjacent the table platen 1, are of substantially square cross-section.
  • Two oppositely disposed sides 11 of the square guiding part of each column 6 act as the guide surfaces (i.e. there are no other guide surfaces for engaging the table platen) and are parallel to each other and are parallel to the respective plane which contains the axis of the press, the axis of the respective column and the axis of the diagonally opposite column.
  • each two-part bush 13 is when viewed as in FIG. 2 a parting line which is parallel to and half-way between the respective support surfaces 15.
  • Vertical adjustment of the gibs 12 is performed in a usual manner by means of screw-threaded bolts 17.
  • the bushes 13 are provided with split stroke-limiting or spacer sleeves 18 bolted down to the tops of the bushes 13.
  • the sleeves 18 would be abutted by the column nuts 8 if the press were operated without the tools 9, 10 in position in their holders.
  • the sleeves 18 also protect the guides from, for instance, scale broken off the workpiece.
  • Each sleeve 18 has a window for the vertical adjustment of the gibs 12.
  • each column may have any rectangular cross-section instead of the solid square crosssection.
  • rectangular cross-section members in compression surround circular cross-section tie members which are in tension, the members in compression acting as the columns referred to above.
  • a forging press comprising a frame having a top cross-member, a bottom cross-member and four columns interconnecting said top and bottom crossmembers, each said column having two parallel, opposed guide surfaces which are substantially parallel to a plane containing the axis of the respective sai olumn and the axis of the diagonally opposite column, n intermediate crossmember through which said 03- umns pass for guided vertical sliding movement of said columns in relation to said intermediate cross-member, said opposed guide surfaces providing the only substantial guidance between said columns and said intermediate cross-member, forging tool holding means for holding upper and lower forging tools for forging a workpiece, and drive means for driving said press for forging; the provision of adjustable guide means comprising respective vertically adjustable wedge-shaped members having guide surfaces which are substantially parallel to said plane and engage and are slidable relative to respective and column guide surfaces, and multi-part bushes defining support surfaces supporting respective said wedge-shaped members with no substantial gaps between said wedge-shaped members and respective said support surfaces, said bushes being mounted on said intermediate cross-member
  • each said bush comprises two parts engaging along at least one parting plane, which as seen in horizontal section surfaces, as seen in horizontal section.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Forging (AREA)
US349085A 1972-04-08 1973-04-09 Forging press having adjustable column guides Expired - Lifetime US3867834A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2217037A DE2217037A1 (de) 1972-04-08 1972-04-08 Nachstellbare saeulenfuehrungen fuer schmiedepressen

Publications (1)

Publication Number Publication Date
US3867834A true US3867834A (en) 1975-02-25

Family

ID=5841417

Family Applications (1)

Application Number Title Priority Date Filing Date
US349085A Expired - Lifetime US3867834A (en) 1972-04-08 1973-04-09 Forging press having adjustable column guides

Country Status (6)

Country Link
US (1) US3867834A (it)
JP (1) JPS499458A (it)
DE (1) DE2217037A1 (it)
FR (1) FR2179837B1 (it)
GB (1) GB1380377A (it)
IT (1) IT981765B (it)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100427241C (zh) * 2006-09-12 2008-10-22 中国第一重型机械集团公司 大型锻造水压机预应力机架可调间隙导轨
CN102873900A (zh) * 2012-09-17 2013-01-16 太原通泽重工有限公司 液压机方形立柱与活动横梁导向间隙调整装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2869177A (en) * 1955-08-10 1959-01-20 Us Rubber Co Guides for reciprocable platens
US3024676A (en) * 1958-11-28 1962-03-13 Sack Gmbh Maschf Hydraulic presses
US3124019A (en) * 1964-03-10 Cold forming machine
US3243988A (en) * 1962-06-28 1966-04-05 Schloemann Ag Frames of heavy machine tools particularly forging presses and the like
US3321952A (en) * 1964-09-22 1967-05-30 Bliss E W Co Press ram guiding arrangement
US3397568A (en) * 1965-08-25 1968-08-20 Sack Gmbh Maschf Hydraulic forging press
US3468155A (en) * 1966-11-01 1969-09-23 Davy & United Eng Co Ltd Forging press

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124019A (en) * 1964-03-10 Cold forming machine
US2869177A (en) * 1955-08-10 1959-01-20 Us Rubber Co Guides for reciprocable platens
US3024676A (en) * 1958-11-28 1962-03-13 Sack Gmbh Maschf Hydraulic presses
US3243988A (en) * 1962-06-28 1966-04-05 Schloemann Ag Frames of heavy machine tools particularly forging presses and the like
US3321952A (en) * 1964-09-22 1967-05-30 Bliss E W Co Press ram guiding arrangement
US3397568A (en) * 1965-08-25 1968-08-20 Sack Gmbh Maschf Hydraulic forging press
US3468155A (en) * 1966-11-01 1969-09-23 Davy & United Eng Co Ltd Forging press

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100427241C (zh) * 2006-09-12 2008-10-22 中国第一重型机械集团公司 大型锻造水压机预应力机架可调间隙导轨
CN102873900A (zh) * 2012-09-17 2013-01-16 太原通泽重工有限公司 液压机方形立柱与活动横梁导向间隙调整装置
CN102873900B (zh) * 2012-09-17 2015-07-08 太原通泽重工有限公司 液压机方形立柱与活动横梁导向间隙调整装置

Also Published As

Publication number Publication date
GB1380377A (en) 1975-01-15
FR2179837B1 (it) 1980-04-30
IT981765B (it) 1974-10-10
FR2179837A1 (it) 1973-11-23
JPS499458A (it) 1974-01-28
DE2217037A1 (de) 1973-10-18

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