US3600913A - Pilger mill die adjustment - Google Patents

Pilger mill die adjustment Download PDF

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Publication number
US3600913A
US3600913A US854518A US3600913DA US3600913A US 3600913 A US3600913 A US 3600913A US 854518 A US854518 A US 854518A US 3600913D A US3600913D A US 3600913DA US 3600913 A US3600913 A US 3600913A
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US
United States
Prior art keywords
rack
pinion
construction
roll
rolls
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
US854518A
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English (en)
Inventor
Walter Vom Dorp
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.)
WEAN IND Inc
Original Assignee
WEAN IND Inc
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
Priority claimed from DE19686752728 external-priority patent/DE6752728U/de
Application filed by WEAN IND Inc filed Critical WEAN IND Inc
Application granted granted Critical
Publication of US3600913A publication Critical patent/US3600913A/en
Assigned to PITTSBURGH NATIONAL BANK reassignment PITTSBURGH NATIONAL BANK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WEAN UNITED, INC., A CORP.OF OH
Assigned to PITTSBURGH NATIONAL BANK reassignment PITTSBURGH NATIONAL BANK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WEAN UNITED, INC., A CORP. OH.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B21/00—Pilgrim-step tube-rolling, i.e. pilger mills
    • B21B21/005—Pilgrim-step tube-rolling, i.e. pilger mills with reciprocating stand, e.g. driving the stand

Definitions

  • MIIMELDIEADJUSI'MENT Chosm-twig! U.S.Cl
  • the present invention reduces downtime to but a few moments wherever a changeover from one roll groove to another is to be made. This is accomplished in one embodiment by shifiing a normally stationary rack longitudinally from one position to another thus rotating the roll having geared engagement therewith. In other embodiments, the rack is shifted transversely to disengage it from its roll pinion whereupon the roll can be positioned as required prior to return of the rack to pinion engagement.
  • FIG. l is a fragmentary sectional view of apparatus embodying the present invention.
  • FIG. 2 is a sectional view generally corresponding to line 2-2 of FIG. 1.
  • FIG. 3 is a fragmentary sectional view generally corresponding to the line 33 of FIG. 2,
  • FIG. 4 is a view similar to FIG. 3 but of another embodiment which the invention may assume, and
  • FIG. 5 is a view similar to FIG. 3 but of still another embodiment.
  • FIGS. 1 and 2 there is shown a pilger mill construction providing a base having spaced-apart, upright sidewalls 11 and 12 joined by a top wall 13. Disposed between the base sidewalls 11 and 12 and slidable along ways in part formed by gibs 14, is a carriage 15 rotatably mounting juxtaposed annular dies, or rolls l6 and 17 arranged in opposed relation to a stock pass line 18.
  • the latter With reference first to roll 16, the latter has opposed die grooves 16.1 16.2 formed in its periphery in circumferentially spaced relation and each groove is tapered from maximum size at I. to minimum size at S.
  • the extent of the working portion of die groove 16.1 is shown by the arrow 16.3 while the extent of the working portion of die groove 16.2 is shown by the arrow 16.4.
  • the die grooves 16.1, 16.2 are identical.
  • Roll 17 is preferably identical to roll 16 and provides die grooves 17.1, 17.2 which correspond to grooves 16.1, 16.2. Grooves 17.1, 17.2 are tapered from a maximum at L to a minimum at S respectively, and the extent of the working portion of grooves 17.1, 17.2 is shown by respective arrows 17.3, 17.4.
  • carriage 15 With the parts thus far described positioned as seen in FIGS. 1 and 2, carriage 15 is shown in the former in full lines in one of its extreme positions. At this position, the large end L of roll grooves 16.1, 17.1 are in registry to closely receive the stock B which is to be reduced. With the stock held at the left of FIG. 1 against longitudinal movement by any convenient gripping mechanism (not shown), carriage 15 will be moved to the right (FIG. 1) to its phantom-line position by a suitably driven link means 19.
  • the rolls 16, 17 will rotate in counterclockwise, clockwise directions respectively at peripheral speeds equal to that of carriage movement.
  • the tapered grooves 16.1, 17.1 will squeeze the stock down from the size represented by the groove ends L to the smaller size represented by the groove ends S.
  • carriage 15 After movement to its phantom-line position, carriage 15 will be returned to its full-line position, the stock B will be slightly advanced to the right and the operation will be repeated until the entire length of stock has been reduced.
  • a pinion 20 (FIGS. 2 and 3) is keyed to the shaft of roll 17 in mesh with a rack 21 mounted on a ledge 22 formed on the sidewall 11.
  • the rack extends along the direction of carriage movement and such rack may normally be affixed to the upper surface of the ledge by screws 23 passing through respective apertures 24 in the ledge.
  • the shaft of roll 16 mounts a pinion 25 in mesh with a rack 26 mounted on a ledge 27 formed on the opposite base sidewall 12.
  • Rack 26 is coextensive with rack 21 and is secured to the undersurface of ledge 27 by suitable screws 28.
  • racks 21a, 26a are adapted to be shifted axially of their pinions from their normal full-line positions to the phantom-line positions shown whenever it becomes desirable to reverse the positions of the roll grooves.
  • the racks are disengaged from their pinions and thus respective rolls may be rotated to achieve the required groove registry. After so rotating the rolls, the racks will be returned to their fullline, pinion-engaged positions and secured therein by any convenient means.
  • a pilger mill construction having a pair of rolls disposed on opposite sides of a stock pass line and said rolls being rotatably mounted on a reciprocable carriage with one roll having a pair of circumferentially spaced die grooves in its periphery for selective presentation to the pass line of the stock, a pinion unitarily rotatable with said one roll and having certain teeth adapted to be engaged with a normally stationary rack for presentation of one groove of said one roll to said stock pass line and having certain other teeth adapted to be engaged with said rack for presentation of said other groove of said one roll to said stock pass line, and means for effecting reciprocation of said carriage longitudinally of said rack to effect rocking movement of said one roll, the improvement comprising means releasably retaining said rack in position, said rack being selectively shiftable sufficiently to effect disengagement of certain pinion teeth therewith and provide for engagement of certain other pinion teeth therewith thereby changing, from presentation of said one roll groove to said stock pass line, to presentation of said other roll groove to said stock pass line.
  • each of said rolls has a pair of circumferentially spaced die grooves in its periphery
  • a pinion is unitarily rotatable with each of said rolls and each pinion is engaged with a respective rack
  • each of said racks is selectively shiftabie for purpose aforesaid.
  • each of said racks is shiftable in a longitudinal direction for purpose aforesaid.
  • each of said racks is shiftable in a direction transversely of its longitudinal axis toward and away from operable engagement with its pinion for purpose aforesaid.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Catching Or Destruction (AREA)
  • Transmission Devices (AREA)
  • Crushing And Grinding (AREA)
US854518A 1968-09-04 1969-09-02 Pilger mill die adjustment Expired - Lifetime US3600913A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19686752728 DE6752728U (de) 1968-09-04 1968-09-04 Einrichtung zur ringwalzenverstellung an kaltpilgerwalzwerken
DE19691948262 DE1948262A1 (de) 1968-09-04 1969-09-19 Einrichtung zum Verstellen der Ringwalzen von Kaltpilgerwalzwerken

Publications (1)

Publication Number Publication Date
US3600913A true US3600913A (en) 1971-08-24

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ID=25757935

Family Applications (1)

Application Number Title Priority Date Filing Date
US854518A Expired - Lifetime US3600913A (en) 1968-09-04 1969-09-02 Pilger mill die adjustment

Country Status (4)

Country Link
US (1) US3600913A (enExample)
DE (1) DE1948262A1 (enExample)
FR (1) FR2017358A1 (enExample)
GB (1) GB1240945A (enExample)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4022048A (en) * 1973-11-29 1977-05-10 Korshunov Evgeny Mill for rolling continuous cast ingots
US5351515A (en) * 1993-01-19 1994-10-04 Sandvik Special Metals Corporation Apparatus and method for reducing the diameter of a cylindrical workpiece
US5906130A (en) * 1998-07-07 1999-05-25 Cbs Corporation Quick change pilger die and assembly of same with rollstand arbor
US20090113975A1 (en) * 2007-11-05 2009-05-07 Fletcher Calvin Eddens Roll die assemblies for pilger mills
US9481024B1 (en) * 2013-03-21 2016-11-01 Davor Petricio Yaksic Pipe joining
DE102015122701A1 (de) * 2015-12-23 2017-06-29 Sandvik Materials Technology Deutschland Gmbh Kaltpilgerwalzanlage
JP2021504144A (ja) * 2017-11-27 2021-02-15 エス・エム・エス・グループ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング ロールスタンド

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2528850C3 (de) * 1975-06-27 1979-09-20 Oskar Aleksandrovitsch Pljazkovskij Pilgerschrittwalzwerk zum Rohrkaltwalzen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2780948A (en) * 1953-02-10 1957-02-12 Svenska Metallverken Ab Rolling mill
US2923187A (en) * 1954-03-29 1960-02-02 Bengtsson Fritz Gunnar Tube rolling mill

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2780948A (en) * 1953-02-10 1957-02-12 Svenska Metallverken Ab Rolling mill
US2923187A (en) * 1954-03-29 1960-02-02 Bengtsson Fritz Gunnar Tube rolling mill

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4022048A (en) * 1973-11-29 1977-05-10 Korshunov Evgeny Mill for rolling continuous cast ingots
US5351515A (en) * 1993-01-19 1994-10-04 Sandvik Special Metals Corporation Apparatus and method for reducing the diameter of a cylindrical workpiece
US5906130A (en) * 1998-07-07 1999-05-25 Cbs Corporation Quick change pilger die and assembly of same with rollstand arbor
US20090113975A1 (en) * 2007-11-05 2009-05-07 Fletcher Calvin Eddens Roll die assemblies for pilger mills
US9481024B1 (en) * 2013-03-21 2016-11-01 Davor Petricio Yaksic Pipe joining
DE102015122701A1 (de) * 2015-12-23 2017-06-29 Sandvik Materials Technology Deutschland Gmbh Kaltpilgerwalzanlage
JP2021504144A (ja) * 2017-11-27 2021-02-15 エス・エム・エス・グループ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング ロールスタンド

Also Published As

Publication number Publication date
FR2017358A1 (enExample) 1970-05-22
GB1240945A (en) 1971-07-28
DE1948262A1 (de) 1971-04-01

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Owner name: PITTSBURGH NATIONAL BANK

Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP.OF OH;REEL/FRAME:004458/0765

Effective date: 19850610

AS Assignment

Owner name: PITTSBURGH NATIONAL BANK,PENNSYLVANIA

Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP. OH.;REEL/FRAME:004792/0307

Effective date: 19860630

Owner name: PITTSBURGH NATIONAL BANK

Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP. OH.;REEL/FRAME:004792/0307

Effective date: 19860630