EP0841996A1 - Device for guidance of wire blanks to wire rollers - Google Patents

Device for guidance of wire blanks to wire rollers

Info

Publication number
EP0841996A1
EP0841996A1 EP96923106A EP96923106A EP0841996A1 EP 0841996 A1 EP0841996 A1 EP 0841996A1 EP 96923106 A EP96923106 A EP 96923106A EP 96923106 A EP96923106 A EP 96923106A EP 0841996 A1 EP0841996 A1 EP 0841996A1
Authority
EP
European Patent Office
Prior art keywords
guiding roller
guiding
wire
roller
ball bearings
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.)
Withdrawn
Application number
EP96923106A
Other languages
German (de)
French (fr)
Inventor
Knut Henrik Johansen
Jan Magnus Lindemann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ceram Tools AS
Original Assignee
Ceram Tools AS
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 Ceram Tools AS filed Critical Ceram Tools AS
Publication of EP0841996A1 publication Critical patent/EP0841996A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/006—Guiding rollers, wheels or the like, formed by or on the outer element of a single bearing or bearing unit, e.g. two adjacent bearings, whose ratio of length to diameter is generally less than one
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/14—Guiding, positioning or aligning work
    • B21B39/16—Guiding, positioning or aligning work immediately before entering or after leaving the pass
    • B21B39/165—Guides or guide rollers for rods, bars, rounds, tubes ; Aligning guides

Definitions

  • the present invention relates to a device for guidance of wire blanks to wire rollers in a wire rolling mill.
  • guiding rollers are used to direct the wire blanks into the forming rolls.
  • the guiding rollers conventionally comprise cylinder-shaped rollers of hardened steel, steel based composite material or hard metal, which guiding rollers have grooves for the wire along their circumference.
  • Each roller has precision machined outsparings which serve as supporting surfaces for ball bearings.
  • These supporting surfaces can either be an integral part of the guiding roller or they can be in the form of a separate part which is affixed in a groove or the like by means of a locking spring.
  • Conventional ball bearings are then affixed against the supporting surface for the ball bearings.
  • the guiding rollers Due to heavy wear of the guiding rollers, the guiding rollers have to be machined at short intervals, which neccessiates stop of the wire rolling mill. In new wire rolling mills the rolling speed is substantially increased, from 60 meter pr. second, which earlier was considered as high speed rolling, to above 100 meters pr. second. Steel ball bearings for such high speed seem to be complicated and costly, and their lifetime will probably be very limited.
  • the present invention relates to a guiding roller for guiding wire blanks to the forming rolls of a wire rolling mill, which guiding roller comprises a cylinder shaped guiding roller having a central opening extending throughout the roller, characterized in the the guiding roller comprises an inner central ring which constitutes an integral part of the guiding roller and where the inner surface of the guiding roller together with the sidewalls of the inner central ring constitute ball races for ball bearings arranged on each side of the inner central ring.
  • the guiding roller itself constitutes the outer ball races for the ball bearings, which gives a substantial simplification of the guiding roller.
  • the guiding roller, the balls of the ball bearings and the inner ball races for the ball bearings are made from a ceramic material.
  • ceramic material it can be used for instance alumina, zirconia, silicon carbide, silicon nitride and ceramic composite materials comprising two or more different ceramic materials.
  • Such a guiding roller where all parts are made from ceramic material will have substantial advantages compared to guiding rollers made from steel, steel based composite material or hard metal and conventional steel ball bearings
  • the guiding rollers according to the present invention made only from ceramic material will have low weight and high wear - and corrosion resistance compared to conventional guiding rolls.
  • Figure 1 is a cross section of a guiding roller according to the prior art
  • Figure 2 is a cut taken along line A-A in figure 1
  • Figure 3 is a cross section of a guiding roller according to the present invention, and where,
  • Figure 4 is a cut taken along line B-B in Figure 3.
  • Figures 1 and 2 show a conventional guiding roller for use in wire rolling.
  • the guiding roller comprises a cylinder-shaped guiding roller 1 made from steel or a ceramic material.
  • the guiding roller 1 has a groove 2 about its circumference for guiding the wire blank.
  • the guiding roller is further equipped with an inwardly extending central part 3 which has presision machined outsparings serving as supporting surfaces for two ball bearings 4, 5.
  • the ball bearings 4, 5 are conventional ball bearings made from steel and having outer ball races 6, inner ball races 7 and balls 8.
  • the guiding roller is mounted on an axle which runs through the ball bearings 4, 5 whereby the guiding roller can freely rotate about the axle.
  • the guiding roller according to the present invention is shown in Figure 3 and 4.
  • the guiding roller shown in Figures 3 and 4 comprises a cylinder-shaped guiding roller 10, preferably made form a ceramic material, having an inner central part 11, which together with the inner surface of the guiding roller, constitute outer ball races for ball bearings 12, 13 where the balls 14 in the ball bearings 12, 13 are kept in place by means of the central inner part 11 and inner ball races 15.
  • the inner surface of the guiding roller 10 is machined on each side of the inner central part 11 in order to form the mentioned outer ball races for the ball bearings 12, 13.
  • Both the balls 14 and the inner ball races are preferably made from a ceramic material.
  • ceramic material it is used for instance, alumina, zirconia, silicon carbide, silicon nitride, or ceramic composite materials made from two or more different ceramic materials.
  • the circumference of the guiding roller has a groove 16 for guiding the wire blank.
  • the guiding roller according to the present invention thus represents a substantial simplification of known guiding rollers as the ball bearings constitute an integral part of the guiding roller.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

Guiding roller for guiding wire blanks to the rollers of a wire rolling mill, which guiding roller (10) commprises a cylinder shaped guiding roller having a central opening extending throughout the roller. The guiding roller (10) comprises an inner central ring (11) which constitutes an integral part of the guiding roller (10) and where the inner surface of the guiding roller (10) together with the sidewalls of the inner central ring (11) constitute ball races for ball bearings (12, 13) arranged on each side of the inner central ring (11).

Description

Title of Invention:
Device for guidance of wire blanks to wire rollers.
Technical field: The present invention relates to a device for guidance of wire blanks to wire rollers in a wire rolling mill.
Technical background
In wire rolling mills guiding rollers are used to direct the wire blanks into the forming rolls. The guiding rollers conventionally comprise cylinder-shaped rollers of hardened steel, steel based composite material or hard metal, which guiding rollers have grooves for the wire along their circumference. Each roller has precision machined outsparings which serve as supporting surfaces for ball bearings. These supporting surfaces can either be an integral part of the guiding roller or they can be in the form of a separate part which is affixed in a groove or the like by means of a locking spring. Conventional ball bearings are then affixed against the supporting surface for the ball bearings.
Due to heavy wear of the guiding rollers, the guiding rollers have to be machined at short intervals, which neccessiates stop of the wire rolling mill. In new wire rolling mills the rolling speed is substantially increased, from 60 meter pr. second, which earlier was considered as high speed rolling, to above 100 meters pr. second. Steel ball bearings for such high speed seem to be complicated and costly, and their lifetime will probably be very limited.
Disclosure in Invention
It is an object of the present invention to provide more simple guiding rollers for wire rolling as an alternative to steel bearings and which has a substantially more simple design and gives a better performance.
Accordingly, the present invention relates to a guiding roller for guiding wire blanks to the forming rolls of a wire rolling mill, which guiding roller comprises a cylinder shaped guiding roller having a central opening extending throughout the roller, characterized in the the guiding roller comprises an inner central ring which constitutes an integral part of the guiding roller and where the inner surface of the guiding roller together with the sidewalls of the inner central ring constitute ball races for ball bearings arranged on each side of the inner central ring.
According to the present invention the guiding roller itself constitutes the outer ball races for the ball bearings, which gives a substantial simplification of the guiding roller. According to a preferred embodiment, the guiding roller, the balls of the ball bearings and the inner ball races for the ball bearings are made from a ceramic material. As ceramic material it can be used for instance alumina, zirconia, silicon carbide, silicon nitride and ceramic composite materials comprising two or more different ceramic materials. Such a guiding roller where all parts are made from ceramic material will have substantial advantages compared to guiding rollers made from steel, steel based composite material or hard metal and conventional steel ball bearings Thus the guiding rollers according to the present invention made only from ceramic material will have low weight and high wear - and corrosion resistance compared to conventional guiding rolls.
Brief Description of the Drawings
Figure 1 is a cross section of a guiding roller according to the prior art
Figure 2 is a cut taken along line A-A in figure 1,
Figure 3 is a cross section of a guiding roller according to the present invention, and where,
Figure 4 is a cut taken along line B-B in Figure 3.
Figures 1 and 2 show a conventional guiding roller for use in wire rolling. The guiding roller comprises a cylinder-shaped guiding roller 1 made from steel or a ceramic material. The guiding roller 1 has a groove 2 about its circumference for guiding the wire blank. The guiding roller is further equipped with an inwardly extending central part 3 which has presision machined outsparings serving as supporting surfaces for two ball bearings 4, 5. The ball bearings 4, 5 are conventional ball bearings made from steel and having outer ball races 6, inner ball races 7 and balls 8. The guiding roller is mounted on an axle which runs through the ball bearings 4, 5 whereby the guiding roller can freely rotate about the axle.
The guiding roller according to the present invention is shown in Figure 3 and 4.
The guiding roller shown in Figures 3 and 4 comprises a cylinder-shaped guiding roller 10, preferably made form a ceramic material, having an inner central part 11, which together with the inner surface of the guiding roller, constitute outer ball races for ball bearings 12, 13 where the balls 14 in the ball bearings 12, 13 are kept in place by means of the central inner part 11 and inner ball races 15. The inner surface of the guiding roller 10 is machined on each side of the inner central part 11 in order to form the mentioned outer ball races for the ball bearings 12, 13. Both the balls 14 and the inner ball races are preferably made from a ceramic material. As ceramic material it is used for instance, alumina, zirconia, silicon carbide, silicon nitride, or ceramic composite materials made from two or more different ceramic materials. In the same way as for conventional guiding rollers the circumference of the guiding roller has a groove 16 for guiding the wire blank.
The guiding roller according to the present invention thus represents a substantial simplification of known guiding rollers as the ball bearings constitute an integral part of the guiding roller. By making all parts of the guiding roller from a ceramic material one can further obtain an acceptable duration of the guiding roller even at a substantial increased rolling speed compared to conventional rolling speed used in wire rolling.

Claims

Claims
1. Guiding roller for guiding wire blanks to the forming rolls of a wire rolling mill, which guiding roller (10) comprises a cylinder shaped guiding roller having a central opening extending throughout the roller, characterized in that the guiding roller (10) comprises an inner central ring (11) which constitutes an integral part of the guiding roller (10) and where the inner surface of the guiding roler (10) together with the sidewalls of the inner central ring (11) constitute ball races for ball bearings (12, 13) arranged on each side ofthe inner central ring (11).
2. Guiding roller according to claim 1, caharacterized in that the guiding roller (10), the balls (14) of the ball bearings (12, 13) and the inner ball races (15) for the ball bearings (12, 13) are made from a ceramic material.
3. Guiding roller according to claim 2, characterized in that the guiding roller (10) the balls (14) of the ball bearings (12, 13) and the inner ball races (15) for the ball races (12, 13) are made from a ceramic material selected among alumina, zirconia, silicon carbide, silicon nitride or ceramic composite materials comprising two or more different ceramic materials.
EP96923106A 1995-07-12 1996-07-10 Device for guidance of wire blanks to wire rollers Withdrawn EP0841996A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO952757A NO300123B1 (en) 1995-07-12 1995-07-12 Device for introducing thread blank into thread rollers
NO952757 1995-07-12
PCT/NO1996/000170 WO1997002908A1 (en) 1995-07-12 1996-07-10 Device for guidance of wire blanks to wire rollers

Publications (1)

Publication Number Publication Date
EP0841996A1 true EP0841996A1 (en) 1998-05-20

Family

ID=19898381

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96923106A Withdrawn EP0841996A1 (en) 1995-07-12 1996-07-10 Device for guidance of wire blanks to wire rollers

Country Status (5)

Country Link
EP (1) EP0841996A1 (en)
AU (1) AU6370696A (en)
CA (1) CA2226684A1 (en)
NO (1) NO300123B1 (en)
WO (1) WO1997002908A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107588087B (en) * 2017-10-23 2019-07-02 江阴市蒋氏汽摩部件有限公司 A kind of clutch cable and preparation method thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE791558A (en) * 1971-11-18 1973-03-16 Copper Refineries Pty Ltd ENTRY GUIDE AND METHOD FOR BRINGING A RAW MATERIAL TO A REDUCING ROLLER FOR YARN LAMINATION
DE2916708A1 (en) * 1979-04-25 1980-11-06 Centro Morgardshammer Gmbh Guide roll for feeding steel bars into hot rolling mill - where flanged rings are used to clamp replaceable guide roll made of wear resistant steel
US4541786A (en) * 1982-09-03 1985-09-17 Ford Motor Company Ceramic turbocharger

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9702908A1 *

Also Published As

Publication number Publication date
NO952757L (en) 1997-01-13
NO300123B1 (en) 1997-04-14
CA2226684A1 (en) 1997-01-30
NO952757D0 (en) 1995-07-12
WO1997002908A1 (en) 1997-01-30
AU6370696A (en) 1997-02-10

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Legal Events

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