US3895510A - Tube cold rolling mill - Google Patents

Tube cold rolling mill Download PDF

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Publication number
US3895510A
US3895510A US270563A US27056372A US3895510A US 3895510 A US3895510 A US 3895510A US 270563 A US270563 A US 270563A US 27056372 A US27056372 A US 27056372A US 3895510 A US3895510 A US 3895510A
Authority
US
United States
Prior art keywords
housing
stand
drive
gear
rolling mill
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
US270563A
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English (en)
Inventor
Sergei Nikolaevich Kozhevnikov
Arkady Semenovich Tkachenko
Eduard Fedorovich Fedorovsky
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.)
Individual
Original Assignee
Individual
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 to DE2232992A priority Critical patent/DE2232992A1/de
Application filed by Individual filed Critical Individual
Priority to US270563A priority patent/US3895510A/en
Priority to GB3571472A priority patent/GB1359435A/en
Priority to FR7230072A priority patent/FR2196858B1/fr
Application granted granted Critical
Publication of US3895510A publication Critical patent/US3895510A/en
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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
    • B21B17/02—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length
    • B21B17/06—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length in a discontinuous process

Definitions

  • ABSTRACT A tube cold rolling mill with rolls the grooves of which are spirally threaded with a variable helix angle and a housing with a drive ensuring its reciprocal-rolling motion relative to the vertical axis so that the angle formed by the housing guides and the axis of rolling corresponds to the helix angle of the roll groove.
  • the invention relates to tube cold rolling mills employed in metallurgy.
  • a tube cold rolling mill comprising a stationary housing for the working stand with rolls, the grooves of which are spirally threaded with a constant helix angle. and a drive with crank mechanism for moving the stand along the housing guides.
  • the working stand in such rolling mills is displaced at a constant angle relative to the axis of rolling equal to the lead angle of the roll groove, which makes it possible, by increasing the number of turns of the roll groove spiral, to enlarge the deformation zone of the billet and hence to increase the mill rolling rate.
  • the principal object of this invention is to provide a tube cold rolling mill which would improve the quality of product being rolled.
  • A'further object of this invention is to provide shorter and more rigid rolls for the mill.
  • a tube cold rolling mill including a working stand with rolls, the grooves of which are spirally threaded, and a drive with crank mechanism for moving the stand along the guides of the housing, wherein, according to the invention, the grooves of the working rolls are spirally threaded with a variable helix.
  • the housing is made so as to allow for a reciprocal-rolling motion relative to the vertical axis and is linked with the stand drive in such a way that the angle formed by the housing quides and the axis of rolling is equal, at each moment of time, to the helix angle of the roll groove spiral, and a crosshead is provided, the housing of which is hinged to connecting rods of the stand drive crank mechanism and has a cavity accommodating a holder, made to turn relative to the vertical axis and hinged to the working stand tie rods and having a hole for passing a billet.
  • the rolling mill in which the groove of the working rolls is spirally threaded with a variable helix angle, while the housing is made so as to allow for its reciprocal-rolling motion relative to the vertical axis makes it possible to reduce the length of the working rolls, to in crease their rigidity, and consequently, to improve the quality of product being rolled.
  • the linkage of the stand with the drive can be made as a crank mechanism, the connecting rod of which is hinged to the housing and crank wheel adapted to interact with the gear of the shaft with fitted-on another gear meshing with the stand drive gear.
  • Such a linkage of the housing with the stand drive ensures reliable and synchronous operation of the drive.
  • FIG. 1 is a plan view with details of the rolling mill, according to the present invention.
  • FIG. 2 is a view of the working stand with rolls having the threading of groove according to the present inventron;
  • FIG. 3 is a cross-section on the line IIl-III of FIG. 1.
  • the rolling mill described in the drawings has a housing I (FIG.1) which is installed so as to ensure its reciprocal-rolling movement relative to the vertical axis 2.
  • the housing 1 is hinged to connecting rod 3 links with a crank wheel 4 which is in mesh with gear 5 rigidly fitted on a shaft 6.
  • the other end of the shaft 6 has a gear 7 meshing with a gear 8 of the drive 9.
  • Guides 10 fixed in the housing I serve for moving a working stand 11 having working rolls 12 (FIG. 2) with shaped groove 13 which is spirally threaded at a variable hclix angle a along the groove.
  • the rolls 12 are fitted out with a rack-and-gear drive 14 (FIG. I).
  • a crank mechanism 15 is connected to the drive 9 of the stand and the crosshead 18 housing. The latter is. in turn, connected to the working stand II with hinged tie rods 17 through a holder 20.
  • the crosshead 16 (FIG. 3) consists of a split housing 18, the interior of which comprises a holder 20, running in bearings 19, which has a through hole 21 for passing a billet 22.
  • the crosshead 16 is mounted in guides 23 with strips 24 replaced in case of wear.
  • the rolling mill operates as follows.
  • the drive 9 reciprocatingly moves the crosshead 16 along guides 23 with the help of the crank mechanism 15.
  • the holder 20 of the crosshead l6 imparts this reciprocating motion to the working stand 11 by means of the tie rods 17.
  • the motion is transmitted through gear wheels 5, 7 and 8 and shaft 6 to the crank wheel 4 and connecting rod 3 wherefrom it is further relayed to the housing 1 of the working stand 11.
  • a tube cold rolling mill comprising a stand with rolls having a variable-section groove provided along a spiral line with a variable inclination angle along the groove length; a housing with guides for said stand made so as to ensure its reciprocal-rolling motion relative to the vertical axis; a drive with a crank mechanism for moving the stand along the guides of said housing; a linkage of'said housing with the drive of said stand made so that the angle formed by the guides of said housing and the axis of rolling is at each moment of time equal to said variable inclination angle of the roll groove; a crosshead, the housing of which is hinged to a crank mechanism of said stand drive and having a cavity to accommodate a holder; said holder being disposed in said cavity of the housing of said crosshead and able to turn relative to the vertical axis and having a hole for passing a billet and being hinged with tie rods of said stand.
  • a tube cold rolling mill as in claim I wherein said linkage of said housing with said stand drive is a crank mechanism comprising a connecting rod connected to said housing, a crank wheel connected to said connecting rod, a shaft having a fixedly mounted first gear linked to said crank wheel, a second gear fixedly mounted on said shaft, and a third gear on said drive of said stand and meshing with said second gear.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Transmission Devices (AREA)
US270563A 1972-07-05 1972-07-10 Tube cold rolling mill Expired - Lifetime US3895510A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE2232992A DE2232992A1 (de) 1972-07-05 1972-07-05 Rohrkaltwalzwerk
US270563A US3895510A (en) 1972-07-05 1972-07-10 Tube cold rolling mill
GB3571472A GB1359435A (en) 1972-07-05 1972-07-31 Tube cold rolling mill
FR7230072A FR2196858B1 (enExample) 1972-07-05 1972-08-23

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE2232992A DE2232992A1 (de) 1972-07-05 1972-07-05 Rohrkaltwalzwerk
US270563A US3895510A (en) 1972-07-05 1972-07-10 Tube cold rolling mill
GB3571472A GB1359435A (en) 1972-07-05 1972-07-31 Tube cold rolling mill
FR7230072A FR2196858B1 (enExample) 1972-07-05 1972-08-23

Publications (1)

Publication Number Publication Date
US3895510A true US3895510A (en) 1975-07-22

Family

ID=27431515

Family Applications (1)

Application Number Title Priority Date Filing Date
US270563A Expired - Lifetime US3895510A (en) 1972-07-05 1972-07-10 Tube cold rolling mill

Country Status (4)

Country Link
US (1) US3895510A (enExample)
DE (1) DE2232992A1 (enExample)
FR (1) FR2196858B1 (enExample)
GB (1) GB1359435A (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10912243B2 (en) * 2018-07-10 2021-02-09 Cnh Industrial Canada, Ltd. Depth adjustment system for seed planting units of an agricultural implement and related assemblies

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
US3308643A (en) * 1964-04-13 1967-03-14 Mannesmann Meer Ag Rolling frame for pilgrim 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
US3308643A (en) * 1964-04-13 1967-03-14 Mannesmann Meer Ag Rolling frame for pilgrim mill

Also Published As

Publication number Publication date
GB1359435A (en) 1974-07-10
FR2196858A1 (enExample) 1974-03-22
DE2232992A1 (de) 1974-01-17
FR2196858B1 (enExample) 1976-08-13

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