US1993427A - Apparatus for rolling seamless tubes - Google Patents

Apparatus for rolling seamless tubes Download PDF

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Publication number
US1993427A
US1993427A US628603A US62860332A US1993427A US 1993427 A US1993427 A US 1993427A US 628603 A US628603 A US 628603A US 62860332 A US62860332 A US 62860332A US 1993427 A US1993427 A US 1993427A
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US
United States
Prior art keywords
rollers
mandrel
rolling
skew
hollow body
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
US628603A
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English (en)
Inventor
Widuch Wilhelm
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US1993427A publication Critical patent/US1993427A/en
Anticipated expiration legal-status Critical
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Classifications

    • 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
    • B21B19/06—Rolling hollow basic material, e.g. Assel mills

Definitions

  • the driven rollers have usually the according to the invention. form of .one or more conical frustums, and on Figure 1 is an elevation partly in sectionof 15 account of the slanting position of their axes therolling mill. of rotation to the long axis of the piece under Figure 2 is a plan view of Fig. 1.
  • treatment exert a pull as well as a rotary action
  • the two skew rollers aand a of which three on the latter, by which an internal'overstrain of or more can be provided with workpieces of the material is brought about.
  • the manufacture ner in a suitable bearingapparatus which for of seamless tubes by slope rolling of pre formed the sake of clearness is not shown in the drawing.
  • hollow bodies arranged on a mandrel is carried
  • Each'roller consists of loose rotatable rings 17 out by setting into rotation the hollow body and an independently rotatable cylindrical part gripped by a gripping apparatus and-the manwhich is either loosely mounted on the roller axle 26 drei, and the freely running skew rollers are fed k or fastened thereto.
  • the hollow body b to be rolled is fixed on a ment efiected by aspecial drive.
  • the rotatably mounted The rolls for carrying out the new skew rolling gripping apparatus e as well as the piece under process consist according to the invention of a treatment'b gripped by or pressed on to the marifreely running conical'part, which preferably is drel is mounted on the pillar c and is set in rota formed of several loose rotatable rings, and an tion by the electromotor 1 whereby the piece unp nd ntly rotata Cy nd part, which der treatment b is fed between the skew rollers.
  • neral al o not driven, u h w v p
  • the chuck carrying pillar c is fed forward on the cially h avy ol s.
  • n given s s may be feeding bed 71.
  • a feeding spindle h Y on account of Condition that the set into rotation bya special drive, such-that the comcal part of T Polls Whlch effectsthe draw feeding speed is regulated with reference to the ing, is not driven, and consists of single rotatable angular position and the diameter of the 1m rings any internal overstrain of the material by drical part of the slope rollers and corresponding rotation in the skew rolling is avoided. since the to the stretch ratio of the matrial.
  • roller mandrels undergo on account of the steady, uniform rolling only a small strain and can therefore be made of cheap qualities of steel, also with the object of cooling, in certain cases can be formed hollow.
  • the rollers can be made in the usual lathes. Special working machines as are necessary for rollers; are not required. The otherwise necessary stock of calibrated rollers, tools, mandrels, sleeves and spindles is considerably reduced.
  • a a 1. A machine for rolling in a single operation a seamless tube having a thin wall from a thick the production of calibrated.
  • hollow body comprising a cylindrical mandrel of a length equal at least to the length of the thick hollow body, at least two freely rotatable conical rollers arranged askew to the said mandrel and each formed of a number of separate freely rotatable disc's, means for rotating the.
  • said mandrel with the thick hollow body mounted on the said mandrel and means for introducing the said mandrel together with the said thick body between the said rollers and forcausing 'a relative longitudinal displacement between the said mandrel and said rollers corresponding to the stretching of the said thick body.
  • a machine for rolling ina single operation a seamless tube having a thin wall from a thick hollow body comprising a cylindrical mandrel of a length equal at least to the length of the thick hollow body, at least two freely rotatable conical rollers arranged askew to the said mandrel, at least two positively driven cylindrical rollers arranged concentrically with and in rear of said conical rollers, means for rotating the mandrel and the hollow body and means for introducing the mandrel together with the said thick body between the said conical rollers and for causing a'relative longitudinal displacement between the said mandrel and said conical rollers corresponding to the stretching of the said thick body.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Metal Extraction Processes (AREA)
US628603A 1931-03-17 1932-08-12 Apparatus for rolling seamless tubes Expired - Lifetime US1993427A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1993427X 1931-03-17

Publications (1)

Publication Number Publication Date
US1993427A true US1993427A (en) 1935-03-05

Family

ID=7915590

Family Applications (1)

Application Number Title Priority Date Filing Date
US628603A Expired - Lifetime US1993427A (en) 1931-03-17 1932-08-12 Apparatus for rolling seamless tubes

Country Status (5)

Country Link
US (1) US1993427A (enrdf_load_stackoverflow)
BE (1) BE390363A (enrdf_load_stackoverflow)
DE (1) DE590655C (enrdf_load_stackoverflow)
FR (1) FR742224A (enrdf_load_stackoverflow)
GB (1) GB382604A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2522257A (en) * 1945-05-18 1950-09-12 Bishop & Babcock Mfg Co Means for forming tubes from tubular blanks
US2830921A (en) * 1944-11-30 1958-04-15 Edward C Creutz Production of uranium tubing
US3078744A (en) * 1959-05-20 1963-02-26 Bronstein Harry Swaging tool
US3104565A (en) * 1959-05-22 1963-09-24 Lodge & Shipley Co Metal working
US5699690A (en) * 1995-06-19 1997-12-23 Sumitomo Metal Industries, Ltd. Method and apparatus for manufacturing hollow steel bars
US11077477B2 (en) * 2016-10-11 2021-08-03 Northwestern University Incremental rotary rolling mill and method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2830921A (en) * 1944-11-30 1958-04-15 Edward C Creutz Production of uranium tubing
US2522257A (en) * 1945-05-18 1950-09-12 Bishop & Babcock Mfg Co Means for forming tubes from tubular blanks
US3078744A (en) * 1959-05-20 1963-02-26 Bronstein Harry Swaging tool
US3104565A (en) * 1959-05-22 1963-09-24 Lodge & Shipley Co Metal working
US5699690A (en) * 1995-06-19 1997-12-23 Sumitomo Metal Industries, Ltd. Method and apparatus for manufacturing hollow steel bars
US11077477B2 (en) * 2016-10-11 2021-08-03 Northwestern University Incremental rotary rolling mill and method

Also Published As

Publication number Publication date
BE390363A (enrdf_load_stackoverflow)
DE590655C (de) 1934-01-08
FR742224A (enrdf_load_stackoverflow) 1933-03-02
GB382604A (en) 1932-10-27

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