US3382696A - Apparatus for working metals and other materials - Google Patents

Apparatus for working metals and other materials Download PDF

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Publication number
US3382696A
US3382696A US485514A US48551465A US3382696A US 3382696 A US3382696 A US 3382696A US 485514 A US485514 A US 485514A US 48551465 A US48551465 A US 48551465A US 3382696 A US3382696 A US 3382696A
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United States
Prior art keywords
rolls
guides
mill
rolling
rolled
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Expired - Lifetime
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US485514A
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English (en)
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Martelee Ghislain
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Individual
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
    • B21C3/02—Dies; Selection of material therefor; Cleaning thereof
    • B21C3/08—Dies; Selection of material therefor; Cleaning thereof with section defined by rollers, balls, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/18—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories for step-by-step or planetary rolling; pendulum mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
    • B21C3/02—Dies; Selection of material therefor; Cleaning thereof
    • B21C3/06—Dies; Selection of material therefor; Cleaning thereof with adjustable section

Definitions

  • the invention referred to above has as its object the modification of the cross-section and possibly the form of a basic material, the imparting to the material a given surface, for example a smooth surface, and also certain mechanical properties.
  • the material to be drawn or wiredrawn is forcibly pulled through a die, the walls of which exert great pressures on the material and produce the desired cross-section.
  • This invention relates to apparatus which avoids or substantially reduces the draw-backs mentioned above.
  • the working of material according to the present invention is essentially characterized in that the basic material is reduced 'between plural rolls or dies, of suitable profile, each pair being made to follow convergent and/ or parallel paths in such a way that they block the material progressively and in such a way that the profile along the envelope Surface, produced by the gcneratrices of Contact between rolls or dies and the material during the working along the line of movement of the said rolls or dies, is oblique to the axis of the material during the treatment, the said Obliquity being either linear or curved with a variable radius, the said material being further possibly subjected t0 a tractive force or a thrust independent of the rolls or dies.
  • the above mode of operation offers the important advantage of substantially reducing the shocks transmitted to the frame and ensuring a finished product manufactured to the closest tolerances.
  • the rolls have the same diameter or have an increasing diameter according to Whether or not they are placed within convergent or parallel guides or slides. lt should be noted that it ispossible to use the process in the invention imparting to the rolls a movement in the reverse direction from that of the extraction of the -treated material.
  • the rolls are provided with pedestal bearings in which they rotate idly so that each roll can rotate at its own speed, which may be different from that of the other rolls.
  • the rolling operation is completed by means of several pairs of rolls, the spacing between the two rolls of every pair being the sa-me, which allows products to be obtained with especially close tolerances.
  • the rolls are used continuously and preferably in a closed circuit, that is lto say each roll after having carried out its rolling operation, is reintroduced at the input side of the device as if it were a new roll.
  • a preferred embodiment of the device forming the subject matter of the present invention is characterized in that comprises: a frame having two flanges facing one another and each provided with two slides or roller bearn ings, which may be convergent and/ or parallel, the slides of one frange being similar to those of the other similarly arranged facing these latter.
  • a device maintaining the distance between the rolls of a given set is a device maintaining the distance between the rolls of a given set.
  • the feed device for the rolls is of the endless chain type.
  • the convergent bearings or slides are provided at each of their ends with an extension parallel to the plane bisecting their angle of convergence, and preferably their connection gradually.
  • these parallel extensions are movable and adjustable.
  • FIGURE l shows a longitudinal section through a rolling mill for carrying out the method in accordance with the invention
  • FlGURE 2 is a cross-section taken on the line li-II oi FIGURE 1.
  • a rolling mill comprises a cage formed by a pair of rivid uprights 1 (only one of which is shown) spaced apart by cross-members 2.
  • Channel-like guides 3 formed in the inner face of each upright 1 provide paths 5 along which are arranged to travel bearing blocks i formed as roller bearings, the outer races of which roll in the guides 3.
  • Each bearing block fi co-operates with a bearing block associated with the lupright opposite and following a similar path to idly support a roll o.
  • Adjacent bearing blocks are spaced and connected by links 7 to form two endless chains of rolls which, because of the orientation of the paths 5, are caused to converge towards the discharge end of the mill.
  • Each endless chain is provided with two sets of sprockets 8 which serve to drive it and maintain its rolls in phase with those in the other chain. Motion is transmitted from the sprockets to the chains by teeth 9 which engage the journals lil of the rolls 6.
  • a strip 11 of the material to be rolled enters the mill where the chains of rolls have the greatest spacing and leaves at the other end where the chains of rolls have the smallest spacing. It is then driven by a conveying means not shown in the drawing.
  • the mill further comprises at the inlet and outlet, moveable guide components 12 which act as a progressive connecting element to the fixed convergent guides.
  • guide components 12 may 4move parallel to the convergent guides and have a surface parallel to the materials axis which makes it possible for them to admit materials of different thicknesses at the inlet side and to modify the thickness of the rolled product.
  • the guides 12 consist of a series of fiat members 13 slidable against the flat surface of the uprights l.
  • the members 13 have flanges to prevent the components 12 escaping if there is no material being rolled.
  • T he components can slide, supported on surfaces which are parallel to the guides of the uprights.
  • control devices for the slides 12 are not shown in the figure. They may be for-med for example by hydraulic jacks which require a comparatively large travel if the gradient of the guides is small and vice versa.
  • the inlet slide components 12 are moved by a hydraulic jack to a position wherein the distance between the two pairs of rolls occupying the leading positions is greater than the thickness of the material to be rolled, which allows the material to be easily introduced.
  • the discharge slide components 12 are moved by means of a hydraulic jack to obtain a distance between the three rolls occupying the trailing position which is equal to the desired thickness ofthe product.
  • the material to be treated is then inserted in the device and the sprockets are set in motion at low speed. At this moment the ixed support may be brought into place so as to produce the entrainment of lthe material because of the forces described above.
  • the material then travels progressively between the different pairs of rolls; the rate of flow of the material being constant and the reduction progressive, the flow speed gradually increases as does also the speed of rotation of the rolls which easily adapt themselves to this continuous increase in speed as they are mounted idly in their bearing blocks.
  • the inlet slide components 12 are then moved to obtain a distance between the instantaneous two pairs of leading rolls equal to the thickness of the product at the inlet. This avoids an abrupt attack on the material and the rolling commences gradually, noiselessly and without exaggerated shock.
  • the strip 11 at the outlet is then fixed to the conveying means and the sprockets are speeded-up until the optimum speed is reached.
  • Automatic control of the discharge thickness can be obtained by acting on the hydraulic jack controlling the movement of the slides 12.
  • the method and apparatus of the invention offer the following further advantages-due to the wedging effect of the convergent guides, the rolling forces are to a large extent taken up by the frame, the screws or control chains or the support screws only taking a very small part of these forces, by contrast with present conventional practice where the screws actuated during the passage of the product take up all the rolling operation forces.
  • This type of embodiment makes it possible to obtain products with very close tolerances of thickness; in fact, in the caseof a rolling operation, the rolls acting in the parallel guides only roll the excess thicknesses arising from the yielding at the proceeding rolls.
  • the last pass is carried out practically without reduction, consequently practically without any force between the rolls and iinally practically without yielding, that is to say at a thickness which is strictly equal to that desired.
  • This embodiment likewise makes possible (as has already been pointed out above) a gradual attack of the material at the input side thus avoiding noise and repeated shocks on the rolls and on the mechanical equipment for control purposes and for taking up the forces exerted.
  • a rolling mill comprising in combination a pair of opposed endless roller chains having rolls journalled thereon, journals on the outer sides of the chains, a pair of spaced uprights having confronting surfaces, cro-ssmembers securing together said uprights to form a cage, said confronting surfaces of said uprights having channellike paths in which said journals are disposed, drive means for circulating said endless chains, guides for said chains located at the inlet and at the outlet of the path between the chains for the material to be rolled, and means mounting said guides for sliding movement on and relative to said uprights thereby to vary the distance between the rolls at said inlet and at said outlet.
  • a r-olling mill as claimed in claim 1, said drive means comprising toothed sprockets whose teeth engage between said journals.
  • a rolling mill as claimed in claim 1 and means mounting said guides for sliding movement on and relative to said uprights in a direction at an angle to the longitudinal axis of the material to be rolled, said guides having guide surfaces for the chains parallel to the longitudinal axis of the material to be rolled so that sliding movement of said guides along said uprights moves said guide surfaces toward or away from said axis.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
US485514A 1964-09-08 1965-09-07 Apparatus for working metals and other materials Expired - Lifetime US3382696A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LU46907A LU46907A1 (fr) 1964-09-08 1964-09-08

Publications (1)

Publication Number Publication Date
US3382696A true US3382696A (en) 1968-05-14

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US485514A Expired - Lifetime US3382696A (en) 1964-09-08 1965-09-07 Apparatus for working metals and other materials

Country Status (4)

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US (1) US3382696A (fr)
DE (1) DE1427975A1 (fr)
GB (1) GB1124588A (fr)
LU (1) LU46907A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3816892A (en) * 1972-10-20 1974-06-18 Valmont Industries Tapered tube burnishing machine
US20050144998A1 (en) * 2002-01-17 2005-07-07 Johan Massee Method and forming machine for manufacturing a product having various diameters

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE908849C (de) * 1942-04-28 1954-04-12 Fritz Grah Walzwerk zum Abwalzen von Bloecken, Straengen, Baendern u. dgl.
US2684000A (en) * 1949-04-06 1954-07-20 Voss Engineering Company Multiple roll pass mill
US2792730A (en) * 1953-05-14 1957-05-21 Baldwin Lima Hamilton Corp Metal forming
US2811060A (en) * 1947-07-22 1957-10-29 Tadeusz Sendizimir And Bertha Planetary reducing mills
US2978933A (en) * 1958-03-05 1961-04-11 Sendzimir Tadeusz Beambacked planetary rolling mill

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE908849C (de) * 1942-04-28 1954-04-12 Fritz Grah Walzwerk zum Abwalzen von Bloecken, Straengen, Baendern u. dgl.
US2811060A (en) * 1947-07-22 1957-10-29 Tadeusz Sendizimir And Bertha Planetary reducing mills
US2684000A (en) * 1949-04-06 1954-07-20 Voss Engineering Company Multiple roll pass mill
US2792730A (en) * 1953-05-14 1957-05-21 Baldwin Lima Hamilton Corp Metal forming
US2978933A (en) * 1958-03-05 1961-04-11 Sendzimir Tadeusz Beambacked planetary rolling mill

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3816892A (en) * 1972-10-20 1974-06-18 Valmont Industries Tapered tube burnishing machine
US20050144998A1 (en) * 2002-01-17 2005-07-07 Johan Massee Method and forming machine for manufacturing a product having various diameters
US8117877B2 (en) * 2002-01-17 2012-02-21 Quide B.V. Method and forming machine for manufacturing a product having various diameters
US8539805B2 (en) 2002-01-17 2013-09-24 Johan Massee Method and forming machine for manufacturing a product having various diameters

Also Published As

Publication number Publication date
LU46907A1 (fr) 1966-03-08
DE1427975A1 (de) 1968-11-28
GB1124588A (en) 1968-08-21

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