PL442342A1 - Method of rolling balls - Google Patents

Method of rolling balls

Info

Publication number
PL442342A1
PL442342A1 PL442342A PL44234222A PL442342A1 PL 442342 A1 PL442342 A1 PL 442342A1 PL 442342 A PL442342 A PL 442342A PL 44234222 A PL44234222 A PL 44234222A PL 442342 A1 PL442342 A1 PL 442342A1
Authority
PL
Poland
Prior art keywords
rollers
furrow
rotation
constant speed
cage
Prior art date
Application number
PL442342A
Other languages
Polish (pl)
Inventor
Arkadiusz Tofil
Janusz Tomczak
Damian Krawiec
Original Assignee
Firma Codogni Spółka Jawna
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
Application filed by Firma Codogni Spółka Jawna filed Critical Firma Codogni Spółka Jawna
Priority to PL442342A priority Critical patent/PL442342A1/en
Priority to EP23193049.6A priority patent/EP4342599A1/en
Publication of PL442342A1 publication Critical patent/PL442342A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/085—Rail sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/02—Making machine elements balls, rolls, or rollers, e.g. for bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/085—Rail sections
    • B21B1/0855—Rerolling or processing worn or discarded rail sections
    • 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
    • B21B13/005—Cantilevered roll stands
    • 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
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/58—Roll-force control; Roll-gap control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00—Making articles shaped as bodies of revolution
    • B21H1/14—Making articles shaped as bodies of revolution balls, rollers, cone rollers, or like bodies

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Metal Rolling (AREA)

Abstract

Sposób walcowania kul, zwłaszcza ze stóp złomowanych szyn kolejowych, charakteryzuje się tym, że półfabrykat (30) w kształcie odcinka stopy szyny kolejowej nagrzewa się do temperatury właściwej dla obróbki plastycznej na gorąco, po czym nagrzany półfabrykat (30) umieszcza się w bruzdach (2a) i (2b) rolek wprowadzających (1a) i (1b), następnie uruchamia się ruch obrotowy rolek prowadzących (1a) i (1b) z jednakową prędkością (n1) i przemieszcza się półfabrykat (30) w kierunku prowadnicy przedniej (3) ze stałą prędkością (V1), po czym wprawia się walce bruzdowe pierwszej klatki (5a) i (5b) w ruch obrotowy ze stałą prędkością (n2) w przeciwnych do siebie kierunkach oraz wprawia się walce bruzdowe drugiej klatki (11a) i (11b) w ruch obrotowy ze stałą prędkością (n3) w przeciwnych do siebie kierunkach oraz wprawia się walce bruzdowe trzeciej klatki (17a) i (17b) w ruch obrotowy ze stałą prędkością (n4) w przeciwnych do siebie kierunkach oraz wprawia się walce bruzdowe czwartej klatki (13a) i (13b) w ruch obrotowy ze stałą prędkością (n5) w przeciwnych do siebie kierunkach, jednocześnie wprawia się rolki prowadzące (27a) i (27b) w ruch obrotowy ze stałą prędkością (n6) w zgodnym kierunku i jednocześnie wprawia się w ruch obrotowy walce śrubowe (31a) i (31b) z jednakowymi prędkościami (n7) w tym samym kierunku, po czym wprowadza się półfabrykat (30) do otworu prowadzącego (4) prowadnicy przedniej pierwszej klatki (3) i przemieszcza się półfabrykat (30) w kierunku walców bruzdowych pierwszej klatki (5a) i (5b) i wprowadza się półfabrykat (30) do bruzd (6a) i (6b) w kształcie trapezowym, znajdujących się na powierzchni walców bruzdowych pierwszej klatki (5a) i (5b), które mają głębokość (h1) mniejszą od połowy wysokości półfabrykatu (30).The method of rolling balls, especially from scrapped railway rail feet, is characterized by the fact that the semi-finished product (30) in the shape of a section of the rail foot is heated to the temperature appropriate for hot forming, and then the heated semi-finished product (30) is placed in the grooves (2a). ) and (2b) of the introduction rollers (1a) and (1b), then the rotation of the guide rollers (1a) and (1b) is started at the same speed (n1) and the semi-finished product (30) moves towards the front guide (3) with constant speed (V1), then the furrow rollers of the first stand (5a) and (5b) are set in rotation at a constant speed (n2) in opposite directions, and the furrow rollers of the second stand (11a) and (11b) are set in rotation at a constant speed (n3) in opposite directions and the furrow rollers of the third cage (17a) and (17b) are set into rotation at a constant speed (n4) in opposite directions and the furrow rollers of the fourth stand (13a) are set ) and (13b) into rotation at constant speed (n5) in opposite directions, at the same time the guide rollers (27a) and (27b) are set into rotation at constant speed (n6) in the same direction and at the same time set in motion rotating screw rollers (31a) and (31b) with equal speeds (n7) in the same direction, then the blank (30) is introduced into the guide hole (4) of the front guide of the first cage (3) and the blank (30) moves in direction of the furrow rolls of the first cage (5a) and (5b) and the semi-finished product (30) is introduced into the trapezoidal grooves (6a) and (6b) located on the surface of the furrow rolls of the first cage (5a) and (5b), which have depth (h1) less than half the height of the blank (30).

PL442342A 2022-09-21 2022-09-21 Method of rolling balls PL442342A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL442342A PL442342A1 (en) 2022-09-21 2022-09-21 Method of rolling balls
EP23193049.6A EP4342599A1 (en) 2022-09-21 2023-08-23 Method of rolling balls

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL442342A PL442342A1 (en) 2022-09-21 2022-09-21 Method of rolling balls

Publications (1)

Publication Number Publication Date
PL442342A1 true PL442342A1 (en) 2024-03-25

Family

ID=88017844

Family Applications (1)

Application Number Title Priority Date Filing Date
PL442342A PL442342A1 (en) 2022-09-21 2022-09-21 Method of rolling balls

Country Status (2)

Country Link
EP (1) EP4342599A1 (en)
PL (1) PL442342A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1910271A (en) * 1931-12-16 1933-05-23 Sheffield Steel Corp Process and apparatus for rerolling railroad rails
DD144893A1 (en) 1979-07-20 1980-11-12 Werner Penske MOTOR-INDEPENDENT ADDITIONAL HEATING
PL219678B1 (en) * 2011-05-11 2015-06-30 Lubelska Polt Tool for oblique rolling of ball type products
PL241251B1 (en) 2017-11-08 2022-08-29 Lubelska Polt Method for rolling of bars from scraped railway rail webs
PL241107B1 (en) * 2017-12-14 2022-08-01 Lubelska Polt Method for skew rolling of ball forgings
PL239815B1 (en) * 2020-02-21 2022-01-10 Lubelska Polt Method of rolling steel rods

Also Published As

Publication number Publication date
EP4342599A1 (en) 2024-03-27

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