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US1939524A - Rolling mill - Google Patents

Rolling mill Download PDF

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Publication number
US1939524A
US1939524A US698065A US69806532A US1939524A US 1939524 A US1939524 A US 1939524A US 698065 A US698065 A US 698065A US 69806532 A US69806532 A US 69806532A US 1939524 A US1939524 A US 1939524A
Authority
US
United States
Prior art keywords
rolls
tube
bushing
rolling mill
mandrel
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
US698065A
Other languages
English (en)
Inventor
Schimmel Hans
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
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US1939524A publication Critical patent/US1939524A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers

Definitions

  • seamless thin walled tubes have been rolled from pierced billets, in rolling mills having two or four inclined, barrel shaped rolls, between whichis fixed a mandrel mounted upon a mandrel shaft.
  • rolling mills having two or four inclined, barrel shaped rolls, between whichis fixed a mandrel mounted upon a mandrel shaft.
  • rolls-are preferably disk rolls arranged at an acute angle to the tube feeding opening
  • the stretching and rounding bushing is preferably mounted for longitudinal movement with respect to the path of the tube, in order to continuously present the metal to the stretching pressure.
  • Figure .2 is a horizontal section through the same
  • Figure 3 is a view modification
  • Figure 4 is a correspondingly modved view similar to Figure 2.
  • Figures 1 and 2 show a tube l0 which'is carried by a central cylindrical mandrel 11.v
  • two or more disk rolls 12 are provide., which are mounted at an acute angle to the axis of the tube being rolled, the axes of the rolls being inclined toward the entrance end of the mill.
  • a stretching and rounding bushing 1 3 is interposed' between the tube 10 and the mounting of the rollers 12. This bushing is cut away to form lateral openings through which the rollers project inwardly into engagement with the tube on the similar 'to Figure 1,-showing a at the ends, resulting in a funnel-like construction.
  • the mandrel 11 passes through the rolling mill, with the tube 10 thereon.
  • the rolls 12 are also mounted at an angle to the axis of the tube 10, but in this form the axes of the rolls 12 are at anobtuse' angle to the tube-feeding opening.
  • means are shown for advancing the bushing 13 in the direction of movement of the tube.
  • pressure means such as hydraulic cylinders v14 are shown.
  • the cylinders 14 are mounted in the frame 15, in which the bushing 13 is slidably received.
  • Pistons 16 are mounted in the cylinders 14, and piston rods 17 extend therefrom, the ends of the rods being adjustably connected to a yoke 18 carried by the bushing 13.
  • the bushing ' may be constructed in two parts.
  • the tube 10 on the mandrel 1l is passed into the rolling mill, and the rolls 12 engage the tube, and the action' of the rolls and the moving cylindrical mandrel forms the reducing cone, narrow transition portion, and expanding cone, as described in connection with Figures 1 and 2.
  • the bushing 13 is advanced by the cylinders 14 by means of the odsY 17 and yoke 18.
  • the expanding cone engaging the bushing 13 which is advancing in the direction of Kmovement of the tube, is stretched and rounded by the action of the bushing.
  • the longitudinal movement ⁇ of the bushing 13 is of advantage, 'particularly in conjunction with the longitudinally moving cylindrical mandrel, in that as the expanding cone is ⁇ continuously formed, the same is continuously received by the advancing bushing, and thus a smooth and unlform operation is effected.
  • the tube discharged from the stretching rolling mill above described can be worked up or finished in a finishing apparatus or an expanding rolling mill followed by a reducing rolling mill.
  • rolls having the axes thereof inclined with respect to the direction of movement of the piece being worked, a cylindrical mandrel movable in said direction of movement for feeding the piece to be rolled to said rolls, and a stretching and rounding bushing also movable in said direction of movement for receiving the tube formed by said rolls and continuously subjecting the same to the stretching pressure.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Metal Extraction Processes (AREA)
  • Metal Rolling (AREA)
US698065A 1931-05-04 1932-04-28 Rolling mill Expired - Lifetime US1939524A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE384120X 1931-05-04

Publications (1)

Publication Number Publication Date
US1939524A true US1939524A (en) 1933-12-12

Family

ID=6368640

Family Applications (1)

Application Number Title Priority Date Filing Date
US698065A Expired - Lifetime US1939524A (en) 1931-05-04 1932-04-28 Rolling mill

Country Status (4)

Country Link
US (1) US1939524A (fr)
BE (1) BE385911A (fr)
FR (2) FR384120A (fr)
GB (1) GB384120A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747926C (de) * 1936-10-02 1944-10-20 Schraegwalzwerk

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2588106A (en) * 1952-03-04 Sheetsxsheet i

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747926C (de) * 1936-10-02 1944-10-20 Schraegwalzwerk

Also Published As

Publication number Publication date
FR730594A (fr) 1932-08-18
BE385911A (fr)
FR384120A (fr) 1908-03-30
GB384120A (en) 1932-12-01

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