US2903925A - Rolling mill with segmental rolls - Google Patents

Rolling mill with segmental rolls Download PDF

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Publication number
US2903925A
US2903925A US599619A US59961956A US2903925A US 2903925 A US2903925 A US 2903925A US 599619 A US599619 A US 599619A US 59961956 A US59961956 A US 59961956A US 2903925 A US2903925 A US 2903925A
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Prior art keywords
rolls
carriage
rolling mill
roll
segmental
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Expired - Lifetime
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US599619A
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Mcnulty Frederick Andrew
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W H A Robertson & Co Ltd
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W H A Robertson & Co Ltd
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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

  • the object of the present invention is to enable the above disadvantage to be obviated in a simple and convenient manner.
  • a mill of the kind aforesaid and in accordance with the invention comprises the combination of a recipro catory carriage, and a self-contained roll unit removably mounted on the carriage, the said unit being replaceable by a stand-by unit.
  • Figure l is a front elevation and Figure 2 a cross section on the line 22 of Figure 1 illustrating a selfcontained roll unit in accordance with the invention.
  • Figure 3 is a side elevation, Figure 4 a plan, and Figure 5 a cross section on the line 55 of Figure 3 illustrating a mill provided with the unit shown in Figures 1 and 2.
  • a bed 6 on which are formed a pair of parallel horizontal tracks 7. Also on the bed, and at the same level as the tracks, are mounted a pair of horizontal racks 8. On the bed is supported a carriage 9 which consists essentially of a rectangular frame, the carriage :being supported on the said tracks 7 by rollers 10. Reciprocatory motion is imparted to the carriage 9 by an oscillatory arm 11 which Patented Sept. 15, 1959 at one end is connected by links 12 to the carriage and which at the other end is connected to links 13, the latter being actuated by a crank mechanism (not shown).
  • the roll unit consists of a housing 14 on which are mounted a pair of interacting rolls 15 having working grooves formed on the rolls, or on inserts removably secured to the rolls.
  • the housing comprises upper and lower parts each adapted to carry a roll, the two parts being held together by hydraulically pre-stressed bolts 16 in a known manner.
  • the rolls are interconnected by pairs of pinions 17 on the ends of the roll spindles, and on each end of the upper roll spindle is also secured a pinion 18 for engagement with the corresponding rack 8 on the bed.
  • the roll unit is detachably mounted on the carriage and is secured thereto by keys, wedges or other means.
  • a rolling mill comprising in combination a supporting base, a carriage having a pocket open at its upper end, said carriage being movably supported on the base, mechanism connected to the carriage for imparting linear reciprocatory movements to the carriage, a toothed rack supported on the base and extending parallel to the direction of carriage movement with its teeth facing upwardly, a self-contained unit comprising a frame seated in said pocket and removable through the upper open end thereof, bearing means mounted in said frame, a pair of rolls rotatably supported in said bearing means, interrneshing pinions secured to the rolls and a rack-engaging pinion secured to one roll and engaging said rack for imparting rotational movements to the rolls in response to reciprocation of the carriage.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Press Drives And Press Lines (AREA)
  • Crushing And Grinding (AREA)

Description

Sept. 15, 1959 F. A. MCNULTY ROLLING MILL WITH SEGMENTAL ROLLS Filed July 23, 1956 3 Sheets-Sheet 1 Sept. 15, 1959 Filed July 23, 1956 F. A. M NULTY ROLLING MILL WITH SEGMENTAL ROLLS 5 Sheets-Sheet 2 P 1959 F. A. MCNULTY 2,903,925
I ROLLING MILL WITH SEGMENI'AL ROLLS Filed July 25', 1956 a Sheets-Sheet s United States Patent ROLLING NULL WITH SEGMENTAL ROLLS Frederick Andrew McNulty, Bedford, England, assignor to W. H. A. Robertson & Company Limited, Bedford, England Application July 23, 1956, Serial No. 599,619 Claims priority, application Great Britain August 5, 1955 1 Claim. (Cl. 80- 14) This invention relates to rolling mills of the kind comprising a reciprocatory roll-carrying housing, and means including a rack-and-pinion mechanism for imparting rotational motions from the housing to the rolls. Mills of this kind are used for such purposes as reducing or otherwise shaping metal tubes or bars.
When it becomes necessary to recondition the rolls, a machine of the kind aforesaid and of previously known construction must of necessity be put out of action for the time required to effect the reconditioning with consequent loss of productivity.
The object of the present invention is to enable the above disadvantage to be obviated in a simple and convenient manner.
A mill of the kind aforesaid and in accordance with the invention comprises the combination of a recipro catory carriage, and a self-contained roll unit removably mounted on the carriage, the said unit being replaceable by a stand-by unit.
In the accompanying drawings:
Figure l is a front elevation and Figure 2 a cross section on the line 22 of Figure 1 illustrating a selfcontained roll unit in accordance with the invention.
Figure 3 is a side elevation, Figure 4 a plan, and Figure 5 a cross section on the line 55 of Figure 3 illustrating a mill provided with the unit shown in Figures 1 and 2.
Referring to the drawings, there is provided a bed 6 on which are formed a pair of parallel horizontal tracks 7. Also on the bed, and at the same level as the tracks, are mounted a pair of horizontal racks 8. On the bed is supported a carriage 9 which consists essentially of a rectangular frame, the carriage :being supported on the said tracks 7 by rollers 10. Reciprocatory motion is imparted to the carriage 9 by an oscillatory arm 11 which Patented Sept. 15, 1959 at one end is connected by links 12 to the carriage and which at the other end is connected to links 13, the latter being actuated by a crank mechanism (not shown).
The roll unit consists of a housing 14 on which are mounted a pair of interacting rolls 15 having working grooves formed on the rolls, or on inserts removably secured to the rolls. Preferably the housing comprises upper and lower parts each adapted to carry a roll, the two parts being held together by hydraulically pre-stressed bolts 16 in a known manner.
The rolls are interconnected by pairs of pinions 17 on the ends of the roll spindles, and on each end of the upper roll spindle is also secured a pinion 18 for engagement with the corresponding rack 8 on the bed.
The roll unit is detachably mounted on the carriage and is secured thereto by keys, wedges or other means.
When it is required to recondition the rolls, it is merely necessary to release the roll unit and after lifting it oif the carriage replace it by a stand-by unit, the whole operation operation being capable of being performed in a short time and without disturbance of any other part of the mills.
Having thus described my invention what I claim as new and desire to secure by Letters Patent is:
A rolling mill comprising in combination a supporting base, a carriage having a pocket open at its upper end, said carriage being movably supported on the base, mechanism connected to the carriage for imparting linear reciprocatory movements to the carriage, a toothed rack supported on the base and extending parallel to the direction of carriage movement with its teeth facing upwardly, a self-contained unit comprising a frame seated in said pocket and removable through the upper open end thereof, bearing means mounted in said frame, a pair of rolls rotatably supported in said bearing means, interrneshing pinions secured to the rolls and a rack-engaging pinion secured to one roll and engaging said rack for imparting rotational movements to the rolls in response to reciprocation of the carriage.
References Cited in the file of this patent UNITED STATES PATENTS 1,628,175 Moller May 10, 1927 2,147,301 Krause Feb. 14, 1939 2,436,098 Coe Feb. 17, 1948 2,537,356 Larsson Jan. 9, 1951 2,703,999 Gille Mar. 15, 1955
US599619A 1955-08-05 1956-07-23 Rolling mill with segmental rolls Expired - Lifetime US2903925A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB22566/55A GB786675A (en) 1955-08-05 1955-08-05 Rolling mills

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US2903925A true US2903925A (en) 1959-09-15

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US599619A Expired - Lifetime US2903925A (en) 1955-08-05 1956-07-23 Rolling mill with segmental rolls

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FR (1) FR1158179A (en)
GB (1) GB786675A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4059001A (en) * 1975-10-15 1977-11-22 Korshunov Evgeny Alexeevich Pe Mill for rolling continuously cast ingot

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1110595B (en) * 1958-09-20 1961-07-13 Moeller & Neumann Gmbh Standless rolling frame
DE1287541B (en) * 1964-04-13 1969-01-23 Mannesmann Meer Ag Roll stand for multiple cold pilger mill
DE102015122701A1 (en) * 2015-12-23 2017-06-29 Sandvik Materials Technology Deutschland Gmbh Cold pilger rolling mill

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1628175A (en) * 1925-03-13 1927-05-10 Schloemann Ag Rolling mill
US2147301A (en) * 1935-10-29 1939-02-14 Frank R Krause Method and apparatus for rolling metal
US2436098A (en) * 1945-03-16 1948-02-17 George B Coe Tube reducing mill
US2537356A (en) * 1942-11-28 1951-01-09 See Fabriks Aktiebolag Rolling mill for the production of conical tubes
US2703999A (en) * 1953-11-24 1955-03-15 See Fabriks Aktiebolag Pilgrim rolling mills

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1628175A (en) * 1925-03-13 1927-05-10 Schloemann Ag Rolling mill
US2147301A (en) * 1935-10-29 1939-02-14 Frank R Krause Method and apparatus for rolling metal
US2537356A (en) * 1942-11-28 1951-01-09 See Fabriks Aktiebolag Rolling mill for the production of conical tubes
US2436098A (en) * 1945-03-16 1948-02-17 George B Coe Tube reducing mill
US2703999A (en) * 1953-11-24 1955-03-15 See Fabriks Aktiebolag Pilgrim rolling mills

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4059001A (en) * 1975-10-15 1977-11-22 Korshunov Evgeny Alexeevich Pe Mill for rolling continuously cast ingot

Also Published As

Publication number Publication date
FR1158179A (en) 1958-06-11
GB786675A (en) 1957-11-20

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