US1420239A - brock - Google Patents

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Publication number
US1420239A
US1420239A US40992220A US1420239A US 1420239 A US1420239 A US 1420239A US 40992220 A US40992220 A US 40992220A US 1420239 A US1420239 A US 1420239A
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United States
Prior art keywords
roll
rolls
shaft
spur
per cent
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Expired - Lifetime
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English (en)
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Publication date
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Priority to US40992220 priority Critical patent/US1420239A/en
Priority to GB16897/21A priority patent/GB185543A/en
Priority to FR537649D priority patent/FR537649A/fr
Application granted granted Critical
Publication of US1420239A publication Critical patent/US1420239A/en
Priority to US59234522 priority patent/USRE15692E/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
    • B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
    • B21B35/02—Drives for metal-rolling mills, e.g. hydraulic drives for continuously-operating mills
    • B21B35/025—Drives for metal-rolling mills, e.g. hydraulic drives for continuously-operating mills for stretch-reducing of tubes

Definitions

  • Patented J1me 20, 1922 Patented J1me 20, 1922.
  • This invention relates generally to rolling mills, and primarily to that class known as continuous mills designed more specifically for manufacture of seamless tubing.
  • the blank is passed through a series of alined sets oi rolls oi progressively decreasing pass diameter, known ordinarily as a continuous mill.
  • the pass in these rolls is not quite round 'or cylindrical, being of slightly less diameter in aline transverse the rolls than longitudinally therewith,in other words, slightly oval or elliptical in the longitudinal plane of the rolls.
  • each succeeding set of rolls be ap plied at points in a plane substantially at right angles to the points of heavier pressure of the preceding set of rolls.
  • the heavier pressure of each succeeding set of rolls should be applied at points substantially 90 degrees away from the points of such heavier pressure of the preceding set of rolls.
  • Figure l is a top plan view of a mill ineluding two units constructed in accordance with the present invention.
  • Figure 2 is an enlarged vertical sectional view illustrating the relative inclination of the individual roll standsor housings of opposite roll trains.
  • Figure 3 is a diagram illustrating the invention.
  • each unit including eight sets of rolls comprising two roll trains (U and D in unit A, and C" and D in unit B) of tour rolls each, designated,
  • Another object of my invention is to provide a simple and economical method oi progressively increasing the speed o'l each succeeding set of rolls to con'ipensate tor the constantly increasing rate oi speed of the forward end of the blank by reason of the elongation resulting from reduction in size.
  • the roll mountings or housings oi such a'mill are set in alignment, and the necessary progressively increasing rate of speed is accomplished through the medium of a common driving shaft running along one side of the roll train and carrying driving spur gears of progressively increasing diameter, each meshing with the driven spur on its individual roll.
  • This requires the use of a large number of different sized gears (sixteen in a 16 roll train illustrated in the present case) which adds very materially, of course, to the cost of manufacture, and one of the purposes of my invention is to avoid such additional costs.
  • Each of said driving shafts carries a uniform set of driving spur gears of progressively increasing diameter, designated respectively 1, 3, 5 and 7 on shaft S, 2, 4, 6 and 8 on shaft S 9, 11, 13 and 15 on shaft S and 10, 12, 14 and 16 on shaft S
  • these sets of spur driving gears are of uniform diameter, that is to say, spurs 1, 2, 9 and 10 are of the same diameter, 3, 4, 11 and 12 are of the same diameter, 5, 6, 13 and 14: are of the same diameter, and 7, 8, 15 and 16 are of the same diameter.
  • spur 3 is eight per cent larger than spur 1.
  • spur 5 is eight per cent larger than spur 3
  • spur 7 is eight per cent larger than spur 5.
  • shaft S is driven 100 revolutions per minute and shaft S 10 i revolutions per minute.
  • Spurs 1, 3, 5 and 7 on shaft S will drive rollsR R ,v R and R respectively, While spurs 2, 4-, 6 and 8 on shaft S will drive rolls R R R and R respectively.
  • spur 2 on shaft S which is of the same diameter as spur 1 on shaft S but travels four per cent faster, will drive roll R four per cent faster than roll R is driven;
  • spur 3 on shaft S which is eight per cent larger than spur 2 but travels four per cent slower, will drive roll R four per cent faster than roll R is driven;
  • spur l on shaft S which is the same size as spur 3 but travels four per cent faster, will drive roll R four per cent faster than roll R is driven;
  • spur 5 on shaft S which is eight per cent larger than spur 4 but travels four per cent slower, will drive roll R four per cent faster than roll R driven;
  • spur 6 on shaft S which is the same size as spur 5 but travels four per cent faster, will drive roll R four per cent faster than roll R is driven
  • spur T on shaft S, which is eight per cent larger than spur 6 but travels four per cent slower, will drive roll R four per cent faster than roll It is driven while spur 8 on shaft S which is the same size as spur 7 but travels four per cent faster, will drive roll R four per
  • I t is obvious that any number of mill units may be included in a completed mill, the driving shafts of each succeeding unit being driven proportionately faster than those of the ireceding unit, in order that they may do their work with the same uniform set of driving spurs.
  • the motor M with its common driving shaft 3(7) carrying gears 28 and 29, furnishes the motive power for the four shafts S, S and S, the first being driven through gears 24, and 22, the second through gears 27, 26and 25, the third through gears 33, 32 and 31, and the fourth through gears 36, 35 and 34. See Figures 1 and 3.
  • mill unit including a plurality of roll stands 7 carrying pass forming rolls, separate driv ing shafts respectively at opposite sides of the roll positions, gearing between each shaft and the rolls of alternate roll stands.
  • the said gearing including a gear set for each roll stand, and the correspondin rear sets at opposite sides of the unit including gears of uniform size, and means for driving one of said driving shafts faster tha the other.
  • a mill unit including a plurality of roll stands carrying pass forming rolls, separate driving shafts respectively at opposite sides of the roll positions, a series of uniform gearing sets between each shaft and the rolls of alternate roll stands, the said gearing sets of each shaft having a progressive speed ratio, and means for driving one of said shafts faster than the other.
  • a plurality of mill units each of which includes a plurality of roll stands carrying pass forming rolls, separate driving shafts respectively at opposite sides of the roll positions, gearing between each shaft and the rolls of alternate roll stands, said'gearing having a ratio to progressively increase the speed of successive rolls, and a common source of power having driving connections with the said driving shafts and providing means for operating the two shaftsof each mill unit at different speeds, and also driving the two shafts of one mill unit faster than the shafts of the immediately preceding unit.
  • a series of mill units having the rolls of in dividual roll stands arranged in alinement to provide a continuous roll pass, opposite gear trains in each unit including opposite shafts, sets of driving gears of uniformly increasing diameter on each shaft and operatively connected with the rolls of alternate roll sets, a source of power common to the several mill units, and connections between the source of power and the shafts of each unit for rotating the shaft located alternately at opposite sides of the mill at uniformly increasing rates of speed.
  • a continuous tube rolling mill a plurality of mill units having the rolls of the individual roll stands arranged in aline ment to produce a continuous pass, and the said units including opposite shafts, corresponding sets of gears of uniformly increasing diameter carried by said shafts, and driving connections between the gears of the opposite shafts and the rolls of al tern-ate roll stands, means for rotating the opposite shafts at alternate sides of the mill at a uniformly advanced rate of speed, and a common source of power for actuating said means.
  • a mill unit including a plurality of roll stands, rolls in each stand forming a roll pass, separate shafts at each side of the pass formed by the rolls of the roll stands, gears of progressively and uniformly in creasing diameter arranged on said shafts and located opposite alternate roll stands, driving connections between said rolls and said gears, means for driving one of said shafts at a faster rate of speed than the other, and a common source of power for actuating said means.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structure Of Transmissions (AREA)
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US40992220 1920-09-13 1920-09-13 brock Expired - Lifetime US1420239A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US40992220 US1420239A (en) 1920-09-13 1920-09-13 brock
GB16897/21A GB185543A (en) 1920-09-13 1921-06-20 Continuous tube rolling mill
FR537649D FR537649A (fr) 1920-09-13 1921-06-29 Perfectionnements apportés à la construction des laminoirs destinés à la fabrication des tubes sans soudure
US59234522 USRE15692E (en) 1920-09-13 1922-10-04 Continuous tube rolling mill

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US40992220 US1420239A (en) 1920-09-13 1920-09-13 brock
GB16897/21A GB185543A (en) 1920-09-13 1921-06-20 Continuous tube rolling mill
FR537649T 1921-06-29

Publications (1)

Publication Number Publication Date
US1420239A true US1420239A (en) 1922-06-20

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ID=10085645

Family Applications (2)

Application Number Title Priority Date Filing Date
US40992220 Expired - Lifetime US1420239A (en) 1920-09-13 1920-09-13 brock
US59234522 Expired USRE15692E (en) 1920-09-13 1922-10-04 Continuous tube rolling mill

Family Applications After (1)

Application Number Title Priority Date Filing Date
US59234522 Expired USRE15692E (en) 1920-09-13 1922-10-04 Continuous tube rolling mill

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US (2) US1420239A (fr)
FR (1) FR537649A (fr)
GB (1) GB185543A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE744922C (de) * 1940-03-09 1944-01-31 Demag Ag Walzwerk zum Reduzieren von Rohren
DE887934C (de) * 1939-09-26 1953-08-27 Westdeutsche Mannesmannroehren Kontinuierliches Walzwerk
US4212180A (en) * 1977-11-08 1980-07-15 Innocenti Santeustacchio S.P.A. Device for controlling the rotation of the working rollers in a tube rolling mill

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1127771A (en) * 1965-02-04 1968-09-18 Davy & United Eng Co Ltd Rolling mills

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE887934C (de) * 1939-09-26 1953-08-27 Westdeutsche Mannesmannroehren Kontinuierliches Walzwerk
DE744922C (de) * 1940-03-09 1944-01-31 Demag Ag Walzwerk zum Reduzieren von Rohren
US4212180A (en) * 1977-11-08 1980-07-15 Innocenti Santeustacchio S.P.A. Device for controlling the rotation of the working rollers in a tube rolling mill

Also Published As

Publication number Publication date
GB185543A (en) 1922-09-14
FR537649A (fr) 1922-05-27
USRE15692E (en) 1923-10-02

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