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US2170513A - Apparatus for reducing tubes - Google Patents

Apparatus for reducing tubes Download PDF

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Publication number
US2170513A
US2170513A US724968A US72496834A US2170513A US 2170513 A US2170513 A US 2170513A US 724968 A US724968 A US 724968A US 72496834 A US72496834 A US 72496834A US 2170513 A US2170513 A US 2170513A
Authority
US
United States
Prior art keywords
rolls
reducing
tube
tubes
sets
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
US724968A
Other languages
English (en)
Inventor
Asbeck Gustav
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 claimed from GB3367233A external-priority patent/GB423537A/en
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US2170513A publication Critical patent/US2170513A/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
    • 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
    • B21B17/14—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling without mandrel, e.g. stretch-reducing mills

Definitions

  • the present invention relates to a method of reducing tubes by rolls and to reducing rolls or reducing mills for carrying out the method whereby the aforesaid disadvantage is obviated.
  • the tubes on passing through the series of sets of two or more rolls are acted upon by the clearances between the flanks of the adjacent rolls of each set at continually changing placesin its periphery.
  • the eflect produced by these clearances or spaces is distributed around the entire periphery of the tube and consequently the interior face of the wall of the tube rema ns truly circular.
  • the advantage'intended by the present invention can be obtained by imparting a rotary movement to the tube during its passage through the rolling mill for example by positioning the rolls obliquely or by rotating the tube by other means, for example by twisting guides.
  • the planes of revolution of the reducing rolls in the successive sets of rolls may be so disposed that the clearances or spaces between the flanks of adjacent rolls constituting one of these sets occur at different angular positions in each set.
  • each set of rolls generally consists of more than two rolls and in which the shafts of each set of rolls are directly driven from a centrally arranged driving member, for example a hyperbolic gear wheel.
  • Figure 2 represents diagrammatically the usual arrangement 'for the sepasses are alternately displaced by 90, and it shows aseriesof eight passes each of which is made up of two rolls..
  • Figure 3 illustrates diagrammatically by way' I arrangement of obliquely positioned rolls which' impart to the tube a rotary movement in addition to a longitudinal movement, each set of rolls being in this example constituted by two rolls only.
  • each stand comprising opposed rollers having substantially semi-circular grooves therein, said roll stands being arranged in pairsdisposed in' a'position with the diameter of the open portion of the'groove of one roller of each pair disposed at a right angle to the diameter of the open portion of the groove of the other rollers of. each pair, and the diametersof the open portion of the grooves of succeeding pairs of roll stands being arranged in progression with the diameter of the first member of each succeeding pair of roll stands arranged at an acute angle with respect to the diameter of the first member of a preceding pair of roll stands.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
US724968A 1933-11-11 1934-05-10 Apparatus for reducing tubes Expired - Lifetime US2170513A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEM125550D DE675180C (de) 1933-11-11 1933-11-11 Rohrreduzierwalzwerk ohne Dorn, bestehend aus einer Reihe hintereinander und versetztzueinander angeordneter Walzensaetze
GB3367233A GB423537A (en) 1933-11-30 1933-11-30 Improvements in and relating to methods of rolling tubes and apparatus therefor

Publications (1)

Publication Number Publication Date
US2170513A true US2170513A (en) 1939-08-22

Family

ID=25988431

Family Applications (1)

Application Number Title Priority Date Filing Date
US724968A Expired - Lifetime US2170513A (en) 1933-11-11 1934-05-10 Apparatus for reducing tubes

Country Status (2)

Country Link
US (1) US2170513A (de)
DE (1) DE675180C (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3137926A (en) * 1957-04-02 1964-06-23 Fairey Eng Formation of fins on metal bar or tube stock

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE940524C (de) * 1953-10-04 1956-03-22 Hubert Sassmann Walzenkalibrierung
DE948592C (de) * 1954-08-20 1956-09-06 Hubert Sassmann Verfahren zum Reduzierwalzen laengsnahtgeschweisster Rohre
DE1179172B (de) * 1959-02-17 1964-10-08 Mannesmann Meer Ag Kontinuierliches Walzwerk, insbesondere Rohrreduzierwalzwerk
DE102009010414B4 (de) * 2009-02-26 2014-04-10 Kocks Technik Gmbh & Co. Kg Walzstraße und Verwendung der Walzstraße zum Reduzieren von Stäben und/oder Rohren

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3137926A (en) * 1957-04-02 1964-06-23 Fairey Eng Formation of fins on metal bar or tube stock

Also Published As

Publication number Publication date
DE675180C (de) 1939-05-02

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