WO2017159935A1 - Procédé de fabrication de ressort hélicoïdal creux - Google Patents

Procédé de fabrication de ressort hélicoïdal creux Download PDF

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Publication number
WO2017159935A1
WO2017159935A1 PCT/KR2016/009439 KR2016009439W WO2017159935A1 WO 2017159935 A1 WO2017159935 A1 WO 2017159935A1 KR 2016009439 W KR2016009439 W KR 2016009439W WO 2017159935 A1 WO2017159935 A1 WO 2017159935A1
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WO
WIPO (PCT)
Prior art keywords
hollow
hollow member
heating
finishing
coil spring
Prior art date
Application number
PCT/KR2016/009439
Other languages
English (en)
Korean (ko)
Inventor
김진영
박익수
김종형
이실군
Original Assignee
대원강업 주식회사
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 대원강업 주식회사 filed Critical 대원강업 주식회사
Publication of WO2017159935A1 publication Critical patent/WO2017159935A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F3/00—Coiling wire into particular forms
    • B21F3/02—Coiling wire into particular forms helically
    • B21F3/06—Coiling wire into particular forms helically internally on a hollow form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F15/00—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire
    • B21F15/02—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire wire with wire
    • B21F15/04—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire wire with wire without additional connecting elements or material, e.g. by twisting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F35/00—Making springs from wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/04—Wound springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/02—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/36—Arrangements of heating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F27D11/08—Heating by electric discharge, e.g. arc discharge
    • F27D11/10—Disposition of electrodes

Definitions

  • the present invention relates to a hollow coil spring manufacturing method, and more particularly to manufacturing a coil spring using a hollow member to improve the processing method for the end of the hollow member to increase the endurance life of the coil spring It relates to a hollow coil spring manufacturing method.
  • the coil spring is formed by winding a spring steel wire in a spiral structure, and can perform various functions by mitigating vibration or shock or accumulating energy while compressing or tensioning, and thus, various daily necessities, industrial equipment, and automobiles. Widely used in various articles.
  • the hollow coil spring is a hollow spring steel wire, that is, due to the characteristics of being manufactured using the hollow member, foreign matter is likely to flow into the coil spring during the manufacturing process or use process, in particular, when water is introduced into the coil There is a problem that the durability life of the spring is significantly reduced.
  • Patent Document 1 discloses a method of sealing the end of the hollow member used to manufacture the hollow coil spring.
  • the rolling jig is rotated while the end of the hollow member is in close contact with the rolling jig so that friction heat is generated between the hollow member and the rolling jig, and the end of the hollow member is heated by the frictional heat. Pressing the hollow member in the direction of the rolling jig in the process to close the end of the hollow member in a manner that induces a deformation in which the end portion of the hollow member is rolled into the hollow portion.
  • the sealing method as described above is to induce a deformation in the end of the hollow member to be sealed by itself, there is no need for a separate member and has the advantage of sealing the end of the hollow member through a simple process, Due to the change in mechanical properties with the end of the hollow member deformed by frictional heat, there is a problem in that the end portion of the hollow coil spring is easily corroded, thereby increasing the risk of cracking or breakage.
  • Patent Document 1 Published Patent Publication 10-2012-0037591 (2012.04.20.Publication)
  • the present invention has been made in consideration of the above problems, and an object of the present invention is to improve the processing method for the end of the hollow member in the manufacture of the coil spring using the hollow member compared with the conventional service life of the hollow coil spring It is to provide a hollow coil spring manufacturing method to be improved.
  • the present invention to achieve the object as described above and to perform the problem for removing the conventional defects is to fix the hollow member to the first chuck, and to fix the solid finish member to be coupled to the hollow member to the second chuck Step S10; Generating friction heat between the finishing member and the hollow member by rotating at least one of the first and second chucks while the first and second chucks are in close proximity to each other so that the finishing member is in close contact with the end of the hollow member. S20); When the contact portion between the finishing member and the hollow member is melted by frictional heat generated between the finishing member and the hollow member, the hollow member and the finishing member are brought closer to each other so that the hollow member and the finishing member are in close contact with each other.
  • the hollow member and the finishing member may be made of the same material or made of different materials.
  • the step S10 may include a process of processing the side facing the end of the hollow member to the same size and shape as the end shape of the hollow member among the side surfaces of the finishing member. have.
  • the step S60 the first heating step (S61) for heating the finishing member coupled to both ends of the hollow member; And a second heating step S62 of heating the hollow member and the finishing member as a whole after the heating of the finishing member is completed through the step S61.
  • the step S60 is performed by a plurality of heating furnaces arranged in a structure spaced apart from each other along the moving path of the assembly
  • the step S61 is the two heating furnaces disposed in the front It is made to stop for a predetermined time in a state in which the closing member is coupled to both ends of the hollow member in the state
  • the step S62 is completed after the step S61, the assembly is sequentially placed on the remaining heating furnace disposed on the movement path It may be made to via.
  • the step S60 is made of a resistance heating by sending a current directly to the assembly
  • the step S61 is to install a pair of electrodes at each end of the assembly of the hollow member It is made in such a way to flow the current to the finishing member located at both ends
  • the step S62 is to install one electrode at one end of the assembly
  • the other electrode is installed at the other end to send the current to the assembly as a whole Can be made.
  • the step S61 consists of heating the finishing member at a temperature of 300 ° C. or more and less than 700 ° C., and the step S62 is heating the assembly to a temperature of 700 ° C. or more and less than 1100 ° C. Can be done.
  • both ends of the hollow member are sealed in such a manner as to couple the solid finishing member to the open ends of the hollow member through friction welding, both ends of the hollow member It can be expected that the effect can be sealed stably.
  • the hollow member and the finishing member is composed of different materials, but considering the corrosion progresses at both ends of the coil spring by configuring the finishing member with a corrosion-resistant material, it can improve the durability life of the coil spring You can expect the effect.
  • the heating is performed by dividing into a primary heating step of heating the finishing members installed at both ends of the hollow member and a secondary heating step of heating the hollow member and the finishing member as a whole.
  • FIG. 1 is a process diagram of a hollow coil spring manufacturing method according to a preferred embodiment of the present invention
  • FIG. 2 is a cross-sectional view of a structure of a finishing member according to the present invention.
  • step S60 is a process diagram of step S60 according to an embodiment of the present invention.
  • step S60 is a process diagram of step S60 according to another embodiment according to the present invention.
  • binder 10 hollow member
  • finishing member 101 first chuck
  • FIG. 1 is a process diagram of a hollow coil spring manufacturing method according to a preferred embodiment of the present invention
  • Figure 2 shows a cross-sectional view of the structure of the finishing member according to the present invention.
  • Hollow coil spring manufacturing method is to fix the hollow member 10 to the first chuck 101, solid finishing member 20 to be coupled to the hollow member 10, the second chuck 102 Fixing to (S10); At least one chuck of the first chuck 101 and the second chuck 102 is placed in a state in which the first and second chucks 101 and 102 are close to each other such that the closing member 20 is in close contact with the end of the hollow member 10. Rotating to generate friction heat between the finishing member 20 and the hollow member 10 (S20); When the contact portion of the finishing member 20 and the hollow member 10 is melted by frictional heat generated between the finishing member 20 and the hollow member 10, the hollow member 10 and the finishing member 20 are more melted.
  • the step S10 is a step of installing a hollow member 10 cut to a length for manufacturing a coil spring, and a solid finish member 20 for sealing both ends of the hollow member 10 to the friction welding equipment.
  • the hollow member 10 is fixed to the first chuck 101 provided in the friction welding equipment, and the finishing member 20 is fixed to the second chuck 102 provided in the friction welding equipment.
  • the first chuck 101 and the second chuck 102 is disposed to have a structure facing on the friction welding equipment, at least one chuck of the first chuck 101 and the second chuck 102 is rotated.
  • This structure is possible, and at least one of the first chuck 101 and the second chuck 102 is configured to have a structure capable of moving in a direction approaching or away from the remaining chuck.
  • the second chuck 102 is fixed to the finishing member 20 has a rotatable structure
  • the first chuck 101 to be fixed is configured to have a structure that is movable toward or away from the second chuck 102, and the friction welding equipment of such a structure is already widely used. More detailed description thereof will be omitted.
  • the hollow member 10 and the finishing member 20 may be made of the same material or a different material, preferably the hollow member 10 is made of spring steel used for the manufacture of the coil spring In consideration of the progress of corrosion at the end of the coil spring during use, the finishing member 20 is constructed using a material of enhanced corrosion resistance.
  • the finishing member 20 is made of a dissimilar material excellent in corrosion resistance than the SAE9254 spring steel.
  • the step S10 may include a process of processing the finishing member 20.
  • the groove 21 having the same inner diameter as the inner diameter of the hollow member 10 is processed at the central portion of the side surface of the finishing member 20 having the same outer diameter as the outer diameter of the hollow member 10.
  • the step S20 is a step of generating friction heat between the hollow member 10 and the finishing member 20, the first chuck 101 and the second so that the ends of the hollow member 10 and the finishing member 20 in close contact with each other.
  • the chuck 102 is brought into close proximity, and the hollow member 10 and the finishing member 20 are rubbed by rotating at least one of the first chuck 101 and the second chuck 102.
  • the hollow member 10 and the closing member 20 in close contact with the movement of the first chuck 101, the closing member 20 through the rotation of the second chuck 102 Induce the friction between the hollow member 10 and the finishing member 20 in a manner to rotate the.
  • the step S30 is to press the hollow member 10 and the finishing member 20 to substantially join the hollow member 10 and the finishing member 20, the hollow member 10 through the step S20 and When the contact portion of the finishing member 20 is heated and melted, the second member 102 is moved in a direction close to the first chuck 101 so that the hollow member 10 and the finishing member 20 are in close contact with each other. It will consist of.
  • step S30 may be made while the closing member 20 is rotated, or after ending the rotation of the closing member 20, one end of the hollow member 10 through this step S30 is closed.
  • the step S40 is a step of removing a burr formed in a structure protruding outside the junction of the hollow member 10 and the finishing member 20, and the hollow member 10 and the finishing member 20 through the step S30. After the coupling is made, it may be made by a cutting device provided in the friction welding equipment.
  • the S40 step is to proceed in a manner to remove the burrs formed on both ends of the hollow member 10 in one process after the closing member 20 is coupled to both ends of the hollow member 10 through the S50 step. It may be.
  • the step S50 is a step of installing another finishing member 20 at the opposite end of the hollow member 10 is closed and the closing member 20 is installed at one end, consisting of repeating the steps S10 to S40 You lose.
  • the hollow member 10 is fixed to the first chuck 101 in a state in which one end of the hollow member 10 is turned upside down so that the opposite end thereof is opened toward the first chuck 101 and the second member is fixed to the first chuck 101.
  • the new finishing member 20 is fixed to the chuck 102 by friction welding the hollow member 10 and the finishing member 20 through the operation of the first and second chucks 101 and 102, the opposite side of the hollow member 10 is fixed. Sealing of the end is made.
  • the step S60 is a step of heating the assembly (M) consisting of the finishing member 20 is installed at both ends of the hollow member 10 to the temperature required for the coiling operation, according to a preferred embodiment of the present invention, the Step S60 is a first heating step (S61) for heating the finishing member 20 coupled to both ends of the hollow member 10, and after the heating for the finishing member 20 through the step S61 is completed, the hollow member 10 and the second heating step (S62) for heating the finishing member 20 as a whole.
  • step S60 shows a process diagram of step S60 according to an embodiment of the present invention.
  • the step S60 according to an embodiment of the present invention may be made by a plurality of heating furnaces 110 are arranged in a structure spaced apart from each other along the movement path of the assembly (M).
  • the heating furnace 110 may be an induction heating method of heating a material through induction heating or a heating furnace of heating a material by using heat generated during combustion of a fuel. .
  • the step S61 made by the heating furnace 110 may be performed by the two heating furnaces 110 disposed at the very front with respect to the path in which the assembly M moves.
  • the closing member 20 provided at both ends of the assembly (M) in the process of moving the assembly (M) moving by the conveying means 120, such as a roller along a predetermined path is disposed in the front of the path
  • the first heating step (S61) for heating the finishing member 20 is made by maintaining the assembly (M) in the stopped state for a predetermined time as it is. do.
  • the step S61 is preferably heating the finishing member 20 to a temperature of less than 300 °C 700 °C. This is a problem that when heating the finishing member 20 to a temperature of less than 300 °C, it is difficult to heat the temperature of the finishing member 20 suitable for coiling operation in the second heating step (S62), 700 °C In the case of heating to the above temperature, there is a disadvantage that the productivity is lowered due to unnecessary increase in the heating time, energy is wasted.
  • the step S62 made by the heating furnace 110 is located in front of the rest of the heating path 110, that is, the assembly (M) in the assembly (M) heated the finishing member 20 through the step S61.
  • the remaining heating furnace 110 except for the two heating furnace 110 is made to move so as to pass through the combination (M) sequentially.
  • the binder M In the S62 step, it is preferable to heat the binder M to a temperature of 700 ° C. or more and less than 1100 ° C.
  • the temperature range of the 700 ⁇ 1100 °C is a temperature range suitable for the coiling operation of the hollow member 10, if lower than the temperature range is likely to cause a failure during the coiling operation, higher than the temperature range unnecessary There is a disadvantage in that productivity and energy waste due to the increase in the heating time.
  • step S60 is a process diagram of step S60 according to another embodiment according to the present invention.
  • the step S60 may be made of a resistance heating method of directly flowing a current through the assembly M.
  • the step S61 made by the resistance heating method is provided with a pair of electrodes (131, 132) at each end of the assembly (M), respectively, direct current to the finishing member 20 located at both ends of the assembly (M) It can be made in a way to flow, through which to heat the finishing member 20 to a temperature of less than 300 °C 700 °C.
  • one electrode 141 is installed at one end of the assembly M, and another electrode 142 is installed at the other end to the other electrode from the other electrode. It can be made in a manner that flows a current, through which to heat the assembly (M) to a temperature of 700 °C or more below 1100 °C.
  • the step S70 is a step consisting of processing the combined body (M) heated through the step S60 in the form of a spiral using the coiling equipment, and already developed and used in various ways coiling equipment, hollow according to the present invention Since coiling equipment of a special structure is not required in coiling the member, a more detailed description of step S70 will be omitted.
  • Hollow coil spring processed in the shape of a spiral through the above steps is made into a real product through a post-treatment process such as heat treatment, short peening and painting like a general coil spring.
  • the hollow coil spring manufacturing method according to the present invention by applying a separate closing member 20 to both ends of the hollow member 10 in a manner to seal both ends of the hollow member 10, the hollow member ( Not only can the end of 10) be stably sealed, there is an advantage of improving the problems or improving the characteristics of the hollow coil spring through the selection of the material of the finishing member 20.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Springs (AREA)
  • Wire Processing (AREA)

Abstract

La présente invention concerne un procédé de fabrication d'un ressort hélicoïdal creux. Le but de la présente invention est de fournir un procédé de fabrication d'un ressort hélicoïdal creux, ledit procédé de fabrication d'un ressort hélicoïdal utilisant un élément creux améliorant la manière de traiter les extrémités de l'élément creux de façon à améliorer la durabilité du ressort hélicoïdal creux par rapport à l'état de la technique. À cet effet, la présente invention concerne un procédé de fabrication de ressort hélicoïdal creux caractérisé en ce qu'il comprend les étapes consistant à : fixer un élément creux à un premier mandrin et fixer un élément de finition à un second mandrin (S10); maintenir les premier et second mandrins à proximité l'un de l'autre de telle sorte que l'élément de finition est poussé de force contre une extrémité de l'élément creux et faire tourner au moins l'un des premier et second mandrins, générant ainsi une chaleur de frottement (S20); augmenter la proximité entre le premier et le second mandrin de telle sorte que l'élément creux et l'élément de finition soient plus étroitement pressés l'un contre l'autre, couplant ainsi l'élément creux et l'élément de finition, lorsque des parties de contact entre l'élément de finition et l'élément creux sont fondues par la chaleur de frottement produite entre l'élément de finition et l'élément creux, scellant ainsi une extrémité de l'élément creux (S30); répéter les étapes S10 à S30 de telle sorte que l'élément de finition se trouve accouplé à l'autre extrémité de l'élément creux et scelle celui-ci (S40); éliminer les bavures formées sur les parties de couplage entre l'élément creux et l'élément de finition après l'étape S30 ou S40 (S50); chauffer un corps accouplé formé en installant l'élément de finition sur les deux extrémités de l'élément creux (S60); et enrouler en hélice le corps accouplé qui a été chauffé par l'étape S60, formant ainsi un ressort hélicoïdal (S70).
PCT/KR2016/009439 2016-03-18 2016-08-25 Procédé de fabrication de ressort hélicoïdal creux WO2017159935A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2016-0032805 2016-03-18
KR1020160032805A KR101719151B1 (ko) 2016-03-18 2016-03-18 중공 코일스프링 제조방법

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WO2017159935A1 true WO2017159935A1 (fr) 2017-09-21

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WO (1) WO2017159935A1 (fr)

Families Citing this family (2)

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Publication number Priority date Publication date Assignee Title
KR20210073170A (ko) 2019-12-10 2021-06-18 현대자동차주식회사 중공-중실형 코일 스프링을 제작하는 방법
KR102617071B1 (ko) * 2021-08-26 2023-12-27 현대제철 주식회사 중공 코일 제조용 중간 부재 및 중공 코일 제조 방법

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08501497A (ja) * 1992-09-22 1996-02-20 イー・アイ・デュポン・ドゥ・ヌムール・アンド・カンパニー モリブデン−レニウム合金の摩擦溶接
JP2760111B2 (ja) * 1989-12-14 1998-05-28 石川島播磨重工業株式会社 摩擦接合法
JP2009263711A (ja) * 2008-04-24 2009-11-12 Jfe Steel Corp 電縫管溶接部の熱処理装置
KR101116808B1 (ko) * 2009-03-19 2012-02-28 조태구 스프링 제조방법
KR20120037591A (ko) * 2010-10-12 2012-04-20 대원강업주식회사 코일스프링용 중공소재의 끝단부 밀폐방법
KR20130050293A (ko) * 2010-03-23 2013-05-15 츄오 하츠죠 가부시키가이샤 스프링의 통전 가열 방법 및 그 장치

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2760111B2 (ja) * 1989-12-14 1998-05-28 石川島播磨重工業株式会社 摩擦接合法
JPH08501497A (ja) * 1992-09-22 1996-02-20 イー・アイ・デュポン・ドゥ・ヌムール・アンド・カンパニー モリブデン−レニウム合金の摩擦溶接
JP2009263711A (ja) * 2008-04-24 2009-11-12 Jfe Steel Corp 電縫管溶接部の熱処理装置
KR101116808B1 (ko) * 2009-03-19 2012-02-28 조태구 스프링 제조방법
KR20130050293A (ko) * 2010-03-23 2013-05-15 츄오 하츠죠 가부시키가이샤 스프링의 통전 가열 방법 및 그 장치
KR20120037591A (ko) * 2010-10-12 2012-04-20 대원강업주식회사 코일스프링용 중공소재의 끝단부 밀폐방법

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