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WO2009066857A1 - Procédé de fabrication d'une poulie d'embrayage - Google Patents

Procédé de fabrication d'une poulie d'embrayage Download PDF

Info

Publication number
WO2009066857A1
WO2009066857A1 PCT/KR2008/004862 KR2008004862W WO2009066857A1 WO 2009066857 A1 WO2009066857 A1 WO 2009066857A1 KR 2008004862 W KR2008004862 W KR 2008004862W WO 2009066857 A1 WO2009066857 A1 WO 2009066857A1
Authority
WO
WIPO (PCT)
Prior art keywords
pulley
clutch pulley
clutch
friction wall
magnetic flux
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.)
Ceased
Application number
PCT/KR2008/004862
Other languages
English (en)
Inventor
Young Guk Kim
Sam Dong Kang
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.)
Individual
Original Assignee
Individual
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
Priority claimed from KR1020070120037A external-priority patent/KR20090053276A/ko
Application filed by Individual filed Critical Individual
Publication of WO2009066857A1 publication Critical patent/WO2009066857A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
    • F16D27/10—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings
    • F16D27/108—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings with axially movable clutching members
    • F16D27/112—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings with axially movable clutching members with flat friction surfaces, e.g. discs
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
    • F16D2027/008—Details relating to the magnetic circuit, or to the shape of the clutch parts to achieve a certain magnetic path
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2250/00—Manufacturing; Assembly

Definitions

  • the present invention relates to a banana slot formed on a clutch pulley of an electromagnetic clutch to intersect magnetic flux, and more particularly, to a method of manufacturing a clutch pulley which can minimize a width of a banana slot.
  • an electromagnetic clutch is to interrupt transmission of a power generated by an engine or a drive motor to a compressor, and includes a disc to be adhered or detached by the magnetic flux generated from a field coil unit, and a clutch pulley selectively contacting the disc for interrupting the power transmitted to the compressor.
  • a clutch pulley 100 includes a hub 110 forming a space for accommodating a field coil unit 200 therein, a pulley 120 provided around the hub 110 and wound with a belt, and a friction wall 130 connecting the hub 110 with the pulley 120 and selectively contacting the disc.
  • the friction wall 130 is provided with a plurality of banana slots 140 for inducing magnetic flux when an electric current flows in the field core unit 200, and intersecting the magnetic flux.
  • the flow of the magnetic flux is controlled depending upon the number of the banana slots 140 to determine the initial performance and whole performance of the clutch pulley.
  • the interval of the banana slots i.e., a thickness of a punch
  • the interval of the banana slots should be at least half of a thickness of the base metal. It is impossible to machine the base metal using the press punch if the interval is short.
  • an object of the present invention is to solve the problems involved in the prior art, and to provide a method for manufacturing a clutch pulley which can maximize the productivity by simplifying a manufacturing process related to formation of the clutch pulley, and improve an effect of magnetic flux by minimizing a width of a banana slot.
  • the present invention provides a method for manufacturing a clutch pulley including a hub forming a space to accommodate a field coil unit therein, a pulley provided around a circumference of the hub and wound with a belt, a friction wall for connecting the hub with the pulley, in which a disc is adhered to the friction wall by magnetic flux generated from the field coil unit, and a plurality of banana slots formed on the friction wall to induce the magnetic flux, the method comprising: a first step of performing hot rolling and cold rolling on a base metal of the clutch pulley to form the hub, the pulley and the friction wall; a second step of performing rough boring and finish boring on an intermediate material formed in the first step to adjust a set specification of the clutch pulley; and a third step of forming the banana slots on the friction wall machined in the second step by using a non-contact cutting machine.
  • the method for manufacturing the clutch pulley according to the present invention includes some following advantages.
  • FIG. 1 is a cross-sectional view of a conventional clutch pulley.
  • FIG. 2 is a cross-sectional view illustrating a flow of magnetic flux in the clutch pulley in FIG. 1.
  • FIG. 3 is a cross-sectional view of another conventional clutch pulley.
  • FIG. 4 is a cross-sectional view illustrating a flow of magnetic flux in the clutch pulley in FIG. 3.
  • FIG. 5 is a cross-sectional view of a clutch pulley according to a preferred embodiment of the present invention.
  • FIG. 6 is a cross-sectional view illustrating a flow of magnetic flux in the clutch pulley in FIG. 5.
  • FIGs. 7 A and 7B are views explaining the performance of clutch pulleys according to the present invention and the prior art.
  • FIG. 5 is a cross-sectional view of a clutch pulley according to a preferred embodiment of the present invention
  • FIG. 6 is a cross-sectional view illustrating a flow of magnetic flux in the clutch pulley in FIG. 5.
  • a clutch pulley includes a hub 110 forming a space to accommodate a field coil unit, a pulley 120 provided around a circumference of the hub and wound with a belt, a friction wall 130 for connecting the hub 110 with the pulley 120, a disc being adhered to the friction wall 130 by magnetic flux generated from the field coil unit, and a plurality of banana slots 140 formed on the friction wall 130 to induce the magnetic flux.
  • a method of manufacturing the clutch pulley includes a first step of performing hot rolling and cold rolling on a base metal of the clutch pulley to form the hub 110, the pulley 120 and the friction wall 130, a second step of performing rough boring and finish boring on an intermediate material formed in the first step to adjust a set specification of the clutch pulley 100, and a third step of forming the banana slots 140 on the friction wall 130 machined in the second step by using a non-contact cutting machine.
  • the present invention can be applied to any clutch pulley with the banana slots having banana slots 140.
  • the first step is to cut the base metal of the clutch pulley in a set size and subject the cut base metal to heat treatment.
  • hot rolling and cold rolling are repeatedly performed several times, and the hub 110, the pulley 120 and the friction wall 130 which maintain a frame of the clutch pulley 100 are formed to manufacture the intermediate material.
  • the time required for the heat treatment or the numbers of the hot rolling and cold rolling may be depended upon a material, the detailed description thereof being omitted herein.
  • the second step is to grind the intermediate material formed in the first step to have a wanted size and shape. Preferably rough boring and finish boring are repeated, and inner and outer walls of the friction wall 130 are ground to have an elegant appearance.
  • the third step is a finish process of forming the banana slots 140 on the material machined in the second step.
  • the material is cut to have a width of 0.7 to 2.5 mm by using a water cutter or a laser jet cutter, and the banana slots are formed in a concentric circle on the friction wall.
  • the water jet cutting is performed to pierce the material by using high speed energy that is generated by spraying highly pressurized water onto the friction wall 130.
  • the water jet cutter includes a high-pressure pump for making the water in a high-pressure state, a spray nozzle for spraying the highly pressurized water supplied from the high-pressure pump, and a connecting pipe for connecting the high- pressure pump with the spray nozzle.
  • the laser jet cutting is performed to pierce the material by using thermal shock that is generated by repeatedly carrying out rapid heating and quenching on the friction wall 130.
  • the laser jet cutter includes a laser oscillator for generating a laser beam, and a cooler for spraying a coolant onto a condense surface rapidly heated by the laser beam.
  • a circular induction groove for inducing the magnetic flux or a circular blocking groove for preventing leakage of the magnetic flux is added to maximize a magnetic induction efficiency. Also, the magnetic induction efficiency can be maximized by properly selecting arrangement of the banana slots.
  • a post-treatment performed after the third process such as an adhering process, a brushing process of finishing a surface of the clutch pulley, or a particle removing process of removing particles, will be not described herein.
  • the magnetic flux generated by the field core unit 200 flows along the clutch pulley 100 in a direction indicated by an arrow in FIG. 6. In this instance, if the magnetic flux meets the banana slot 140, the magnetic flux does not flow, and thus flows in the disc 300 adhered to the friction wall 130.
  • FIG. 7 A in which the banana slots having a diameter of 3 mm are formed by using a conventional machining method
  • FIG. 7B in which the banana slots having a diameter of 1.2 mm are formed by using the present invention
  • initial conditions of an electromagnetic analysis system comprise an air gap of 0.050 mm, a voltage of 12 voltages, and the numbers of turns is 325.
  • the performance of the clutch pulley according to the prior art comprises magnetic force of 2153.126 N, torque of 2.678 kgf-m, and flux linkage of 0.634 Wb.
  • the performance of the clutch pulley according to the present invention comprises magnetic force of 2308.082 N, torque of 2.876 kgf-m, and flux linkage of 0.704 Wb.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Pulleys (AREA)

Abstract

L'invention concerne un procédé de fabrication d'une poulie d'embrayage servant à produire sélectivement une friction avec un disque afin d'interrompre un courant dans un embrayage électromagnétique. Le procédé selon l'invention comprend une première étape consistant à laminer à chaud et à froid un métal de base de la poulie d'embrayage afin de former un moyeu (110), une poulie (120) et une paroi de friction (130), une deuxième étape consistant à effectuer un alésage brut et de finition d'un matériau intermédiaire formé lors de la première étape pour permettre l'ajustement à une spécification définie de la poulie d'embrayage (100), ainsi qu'une troisième étape consistant à réaliser à l'aide d'une machine à découper sans contact des encoches arquées (140) sur la paroi de friction (130) usinée lors de la deuxième étape. On réalise un embrayage hexapolaire en réduisant au minimum la largeur des encoches arquées réalisées sur la poulie d'embrayage, améliorant ainsi les performances initiales de cette dernière.
PCT/KR2008/004862 2007-11-23 2008-08-21 Procédé de fabrication d'une poulie d'embrayage Ceased WO2009066857A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR1020070120037A KR20090053276A (ko) 2007-11-23 2007-11-23 클러치풀리의 제조방법
KR10-2007-0120037 2007-11-23
KR10-2008-0034111 2008-04-14
KR20080034111 2008-04-14

Publications (1)

Publication Number Publication Date
WO2009066857A1 true WO2009066857A1 (fr) 2009-05-28

Family

ID=40667663

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2008/004862 Ceased WO2009066857A1 (fr) 2007-11-23 2008-08-21 Procédé de fabrication d'une poulie d'embrayage

Country Status (1)

Country Link
WO (1) WO2009066857A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013060008A1 (fr) * 2011-10-27 2013-05-02 龙口中宇机械有限公司 Procédé et moule pour fabriquer une plaque menante d'embrayage de ventilateur électromagnétique, et fabrication de la plaque menante

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4749073A (en) * 1987-05-11 1988-06-07 Dana Corporation Soft-start electromagnetic coupling
US5096036A (en) * 1990-05-31 1992-03-17 Dana Corporation Electromagnetic coupling discs and method of making the same
US5305865A (en) * 1993-03-05 1994-04-26 Dana Corporation Rotor for electromagnetic coupling
KR20030011740A (ko) * 2002-12-10 2003-02-11 주식회사 엠씨테크 자동차용 전자클러치 조립체 제조방법

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4749073A (en) * 1987-05-11 1988-06-07 Dana Corporation Soft-start electromagnetic coupling
US5096036A (en) * 1990-05-31 1992-03-17 Dana Corporation Electromagnetic coupling discs and method of making the same
US5305865A (en) * 1993-03-05 1994-04-26 Dana Corporation Rotor for electromagnetic coupling
KR20030011740A (ko) * 2002-12-10 2003-02-11 주식회사 엠씨테크 자동차용 전자클러치 조립체 제조방법

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013060008A1 (fr) * 2011-10-27 2013-05-02 龙口中宇机械有限公司 Procédé et moule pour fabriquer une plaque menante d'embrayage de ventilateur électromagnétique, et fabrication de la plaque menante
US9718112B2 (en) 2011-10-27 2017-08-01 Zhaoyu Wang Method and mould for manufacturing drive plate of electromagnetic-fan clutch, and manufactured drive plate
EA029798B1 (ru) * 2011-10-27 2018-05-31 Лункоу Чжунюй Машинери Ко., Лтд Способ и оправка для производства ведущего диска электромагнитной муфты вентилятора и полученный ведущий диск

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