EP0359277A1 - Geriffelte Rolle für das Streckwerk einer Spinnmaschine und Verfahren zu deren Herstellung - Google Patents

Geriffelte Rolle für das Streckwerk einer Spinnmaschine und Verfahren zu deren Herstellung Download PDF

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Publication number
EP0359277A1
EP0359277A1 EP89117110A EP89117110A EP0359277A1 EP 0359277 A1 EP0359277 A1 EP 0359277A1 EP 89117110 A EP89117110 A EP 89117110A EP 89117110 A EP89117110 A EP 89117110A EP 0359277 A1 EP0359277 A1 EP 0359277A1
Authority
EP
European Patent Office
Prior art keywords
roller
shot
fluted
fluted roller
shot peening
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Withdrawn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
EP89117110A
Other languages
English (en)
French (fr)
Inventor
Ryozo Kabushiki Kaisha Toyoda Okuni
Kiyoshi Kabushiki Kaisha Toyoda Isomura
Masafumi Kabushiki Kaisha Toyoda Kunito
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.)
Toyota Industries Corp
Original Assignee
Toyoda Jidoshokki Seisakusho KK
Toyoda Automatic Loom Works Ltd
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 Toyoda Jidoshokki Seisakusho KK, Toyoda Automatic Loom Works Ltd filed Critical Toyoda Jidoshokki Seisakusho KK
Publication of EP0359277A1 publication Critical patent/EP0359277A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
    • B24C1/083—Deburring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/10—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for compacting surfaces, e.g. shot-peening
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/74—Rollers or roller bearings
    • D01H5/78—Rollers or roller bearings with flutes or other integral surface characteristics

Definitions

  • This invention relates to a fluted or grooved roller for use in the draft apparatus of a spinning machine and a method of producing same.
  • the bottom roller is constituted by a fluted or grooved roller formed with a number of grooves 1 generally extending in the axial direction of the roller at each of spaced locations where the fiber bundles are caused to pass through between the paired rollers, as shown in Fig. 1 of the accompanying drawing, in which the fluted roller is generally designated by a reference numeral 2.
  • the surface finishing process relying only on mechanical polishing such as buffing
  • many fine streaks each exhibiting directivity will be formed to remain in the polished surface of the roller, while the roundness imparted to the corner portions of the protrusions defining the grooves come to differ significantly from one another, as a result of which the fluted roller becomes susceptible to the fiber wrapping, fly or dust deposition and the application of fiber nipping pressure also becomes disproportional.
  • such a roller lacks adequate corrosion resistance.
  • the electrolytic polishing method can certainly assure an improvement over the above-mentioned method in respect to the low susceptibility of the finished roller to the occurrence of fiber wrapping and deposition of flies and dust by virtue of the high degree of smoothness of the polished roller surface.
  • the corrosion resistance of a roller having the surface finished by electrolytic polishing can be enhanced to a certain extent as well.
  • the electrolytic polishing method is disadvantageous in that variations in the state of the finished surface more occur in comparison to the mechanical polishing method, thus giving rise to problems.
  • a method of producing a fluted roller constituting the draft apparatus of a spinning machine the roller being formed from a steel material and then hardenedg, characterized in that the fluted roller is processed by shot peening after being hardened.
  • the present invention also provides a fluted roller constituting the draft apparatus of a spinning machine, the fluted roller being formed from a steel material and then hardened, characterized in that the fluted roller has a surface finished by shot peening.
  • the shot employed in the shot peening is formed of a vitreous (glass) material.
  • the shot may be formed of a material having a hardness higher than that of the steel material of the roller and a greater ionization coefficient than that of iron.
  • the fluted roller formed from a steel material and then hardened has a surface finished by a first shot peening process carried out by using shot of a material having a hardness higher than that of the steel material and a second shot peening carried out in succession to the first peening by using shot of a material exhibiting a greater ionization coefficient than that of iron.
  • the surface of a fluted roller made from a steel material and quench hardened is finished by a shot peening process for smoothing the surface of the fluted roller.
  • a shot peening process for smoothing the surface of the fluted roller.
  • the invention is not limited to any apparatusicular hardening process, a high-frequency induction hardening method is preferred.
  • the surface of a workpiece to be processed is generally worked by the shot blasted or projected from a blast finishing machine onto the surface of the workpiece.
  • the surface of the workpiece is not ground but beaten by the shot.
  • the corner portions of the groove defining protrusions can be suitably rounded off, which is very advantageous in suppressing variations in the fiber nipping pressure as well as in protecting the apron and the top roller against injuries.
  • the curvature for the rounding can be selectively determined depending of the size, hardness and the beating speed of the shot as employed among others.
  • the whole surface of the fluted roller is eventually covered by a thin layer of a glass material, as the result of which there is provided a fluted roller which is less susceptible to corrosion or rust even when the fluted roller is used in highly humid environments.
  • the resistance of the roller to rust i.e. corrosion resistance
  • a two-step shot peening process may preferably be employed, according to which the processing for removing the burrs and/or roughness is first performed by using shot of abrasive grains or shot of iron or stainless steel material, to then be followed by a second step in which the shot peening is carried out using glass beads.
  • the time required for the shot peening as a whole can be shortened as compared with shot peening effected by using only the glass beads, whereby the manufacturing cost can be reduced correspondingly.
  • the fluted roller for the purposes of imparting the fluted roller with the property to resist corrosion due to humidity, it is possible to carry out shot peening by using shot made of a material having a greater ionization coefficient than iron such as, for example, aluminum, zinc or the like, in addition to shot peening effected by using shot having a hardness higher than that of the roller material.
  • the first mentioned shot peening differs from normal shot peening because the hardness of aluminum, zinc or the like is far lower than that of the fluted roller to be processed.
  • zinc or aluminum tends to be deposited on the roller surface.
  • the whole surface of the fluted roller is covered with a thin glass film, making it difficult for water molecules to be present on the roller surface in an amount large enough to cause rust to be generated.
  • zinc or the like is not necessarily deposited in the form of a film covering the whole roller surface but may only be deposited locally. This means that a water deposition layer capable of providing water molecules in a number large enough to ionize iron may exist on the roller surface.
  • the standard electrode potential of zinc or the like is more negative than that of iron, zinc or the like is ionized in precedence to the ionization of iron.
  • the fluted roller having the surface processed by shot peening with glass beads may additionally be processed by using shot of zinc, aluminium or the like.
  • a fluted roller made of a carbon steel material was hardened by using a high-frequency induction heating apparatus and subsequently subjected to a shot peening process by using No. 300 size glass beads blasted under an air pressure of 5.5 kgf/cm2 from an air blasting machine.
  • For the surface of the fluted roller thus finished distribution of elements in a depthwise direction was measured through an electron spectroscopy.
  • silicon, calcium and other constituents of the glass beads were detected over the whole roller surface to a depth of about 100 angstroms.
  • a glass layer having a thickness of about 100 angstroms was formed over the whole surface of the fluted roller.
  • the abovementioned fluted roller was held within an isothermal/humidistatic bath set at a temperature of 40°C and a humidity of 95 % together with a fluted roller electrolytically polished and serving as a comparative control sample, whereon a corrosion resistance test was carried out by observing the state of generation of rust on both of the fluted rollers. It was found that the state of rust generated on the fluted roller according to the invention after a time lapse of 120 hours was equivalent to the state of rust prevailing on the control sample after a lapse of 24 hours.
  • the present invention can provide a fluted roller for the draft part of a spinning machine, which can resist fiber wrapping and deposition of flies and dust with positive and uniform fiber nipping pressure comparable to or superior to fluted rollers finished through conventional electrolytic polishing processes and which is vastly superior to the latter in respect to abrasion resistance and fatigue strength, resulting in greatly extended effective life. Further, the quality of the finished surface of the fluted roller according to the present invention is featured by high uniformity.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP89117110A 1988-09-16 1989-09-15 Geriffelte Rolle für das Streckwerk einer Spinnmaschine und Verfahren zu deren Herstellung Withdrawn EP0359277A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP233186/88 1988-09-16
JP23318688A JPH0280627A (ja) 1988-09-16 1988-09-16 紡機のドラフト装置用筋ローラ

Publications (1)

Publication Number Publication Date
EP0359277A1 true EP0359277A1 (de) 1990-03-21

Family

ID=16951086

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89117110A Withdrawn EP0359277A1 (de) 1988-09-16 1989-09-15 Geriffelte Rolle für das Streckwerk einer Spinnmaschine und Verfahren zu deren Herstellung

Country Status (2)

Country Link
EP (1) EP0359277A1 (de)
JP (1) JPH0280627A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4230316A1 (de) * 1992-09-10 1994-03-17 Rieter Ag Maschf Streckwerk für Luftdüsenspinnmaschinen
CN101463512B (zh) * 2007-12-21 2011-10-05 村田机械株式会社 牵伸辊
KR101310793B1 (ko) * 2011-07-28 2013-09-25 현대제철 주식회사 쇼트블라스트용 롤러장치
CN107447310A (zh) * 2017-08-31 2017-12-08 浙江依蕾毛纺织有限公司 一种能除断纤的粗纱机

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102978756A (zh) * 2012-12-03 2013-03-20 吴江市社翊纺织有限公司 一种新型牵引下罗拉的制备方法
CN103469386A (zh) * 2013-09-13 2013-12-25 常熟市建华织造有限责任公司 一种实用型牵引下罗拉的制备方法
CN103484994A (zh) * 2013-09-13 2014-01-01 常熟市建华织造有限责任公司 一种实用型牵引下罗拉

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2244461A (en) * 1938-10-15 1941-06-03 Saco Lowell Shops Fiber working roll for textile machines
FR2266137A1 (de) * 1974-04-01 1975-10-24 Kraftwerk Union Ag
US4239804A (en) * 1979-03-05 1980-12-16 Progressive Blasting Systems Method for treating metal articles for rust corrosion protection and article produced thereby
US4258084A (en) * 1978-10-17 1981-03-24 Potters Industries, Inc. Method of reducing fuel consumption by peening
US4674365A (en) * 1983-07-27 1987-06-23 Spectra Products Corporation Method for extending the life of a cutting tool

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2244461A (en) * 1938-10-15 1941-06-03 Saco Lowell Shops Fiber working roll for textile machines
FR2266137A1 (de) * 1974-04-01 1975-10-24 Kraftwerk Union Ag
US4258084A (en) * 1978-10-17 1981-03-24 Potters Industries, Inc. Method of reducing fuel consumption by peening
US4239804A (en) * 1979-03-05 1980-12-16 Progressive Blasting Systems Method for treating metal articles for rust corrosion protection and article produced thereby
US4674365A (en) * 1983-07-27 1987-06-23 Spectra Products Corporation Method for extending the life of a cutting tool

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DRAHT. vol. 37, no. 11, 01 November 1986, BAMBERG DE pages 655 - 657; B.Kaiser: "Kugelstrahlen zur Steigerung der Schwingfestigkeit von Federn"(see in particular page 657 Bild 3) *
WIRE INDUSTRY. vol. 55, no. 06, 01 June 1988, OXTED GB pages 415 - 420; D.Sommer: "Shot blast descaling and shot peening" *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4230316A1 (de) * 1992-09-10 1994-03-17 Rieter Ag Maschf Streckwerk für Luftdüsenspinnmaschinen
CN101463512B (zh) * 2007-12-21 2011-10-05 村田机械株式会社 牵伸辊
KR101310793B1 (ko) * 2011-07-28 2013-09-25 현대제철 주식회사 쇼트블라스트용 롤러장치
CN107447310A (zh) * 2017-08-31 2017-12-08 浙江依蕾毛纺织有限公司 一种能除断纤的粗纱机

Also Published As

Publication number Publication date
JPH0280627A (ja) 1990-03-20

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