KR100357978B1 - Washing machine - Google Patents

Washing machine Download PDF

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Publication number
KR100357978B1
KR100357978B1 KR1020000019414A KR20000019414A KR100357978B1 KR 100357978 B1 KR100357978 B1 KR 100357978B1 KR 1020000019414 A KR1020000019414 A KR 1020000019414A KR 20000019414 A KR20000019414 A KR 20000019414A KR 100357978 B1 KR100357978 B1 KR 100357978B1
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South Korea
Prior art keywords
head
forming
hole
washing machine
bearing housing
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KR1020000019414A
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Korean (ko)
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KR20010034965A (en
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신태중
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주식회사 코우
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Priority to KR1020000019414A priority Critical patent/KR100357978B1/en
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Publication of KR100357978B1 publication Critical patent/KR100357978B1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/28Articles or materials wholly enclosed in composite wrappers, i.e. wrappers formed by associating or interconnecting two or more sheets or blanks
    • B65D75/30Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding
    • B65D75/32Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding one or both sheets or blanks being recessed to accommodate contents
    • B65D75/321Both sheets being recessed
    • B65D75/322Both sheets being recessed and forming one compartment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2203/00Decoration means, markings, information elements, contents indicators

Abstract

본발명은 세탁기에 관한 것으로 특히, 세탁기의 구동축에 결합되어 베어링을 지지하는 베어링하우징을 커팅과정,제1머리부 성형과정, 제2머리부 성형과정, 머리부 이완과정, 통공 가공과정, 통공 관통과정, 돌기성형과정, 외곽트리밍과정등의 8과정에 의해 냉간 다단성형기 및 파워프레스로 성형함으로서 제조공수절감 및 제조원가등을 감축시킬 수 있는 세탁기용 베어링하우징의 성형방법을 제공한다.The present invention relates to a washing machine, in particular, the bearing housing coupled to the drive shaft of the washing machine to support the bearing cutting process, the first head forming process, the second head forming process, head relaxation process, through hole processing process, through hole By forming into a cold multi-stage molding machine and power press by 8 processes such as process, protrusion molding process, and outer trimming process, it provides a method of forming bearing housing for washing machine which can reduce manufacturing labor and manufacturing cost.

Description

세탁기용 베어링 하우징의 성형방법{WASHING MACHINE}Forming method of bearing housing for washing machine {WASHING MACHINE}
본발명은 세탁기에 관한 것으로 특히, 세탁기의 구동축에 결합되어 베어링을 지지하는 베어링 하우징을 커팅과정,제1머리부 성형과정, 제2머리부 성형과정, 머리부 이완과정, 통공 가공과정, 통공 관통과정, 돌기 성형과정, 외곽 트리밍과정등의 8과정에 의해 냉간 다단성형기 및 파워프레스로 성형함으로서 제조공수절감 및제조원가등을 감축시킬 수 있는 세탁기용 베어링 하우징의 성형방법에 관한 것이다.The present invention relates to a washing machine, in particular, the bearing housing coupled to the drive shaft of the washing machine to support the bearing cutting process, the first head shaping process, the second head shaping process, head relaxation process, through hole processing process, through hole The present invention relates to a method for forming a bearing housing for a washing machine which can reduce manufacturing man-hours and manufacturing costs by forming a cold multi-stage molding machine and a power press by eight processes such as a process, a protrusion forming process, and an outer trimming process.
종래 세탁기용 베어링 하우징의 성형방법은 도2a, 2b 및 2c에 나타내었다.Conventional molding methods for bearing housings for washing machines are shown in Figures 2a, 2b and 2c.
상기 베어링 하우징의 성형방법은, 완제품의 체적을 구하여 필요한 길이 만큼 모재(2)를 커팅하는 커팅과정과,Forming method of the bearing housing, the process of cutting the base material (2) by the required length to obtain the volume of the finished product,
상기 커팅과정에서 커팅된 모재(2)에 머리부를 예비 성형하기 위해 금형에 의해 펀칭하여 돌출부(3)를 성형시키는 제1머리부 성형과정과,A first head forming process of forming a protrusion 3 by punching with a mold to preform a head on the base material 2 cut in the cutting process;
상기 제1머리부 성형과정에서 성형된 돌출부(3)를 펀칭하여 머리부(4)를 성형하는 제2머리부 성형과정과,A second head molding process of forming the head 4 by punching the protrusion 3 formed in the first head molding process;
상기 제2머리부 성형과정에서 성형되는 머리부(4)를 재차 펀칭하여 넓히는 제3머리부 성형과정과,A third head molding process of punching and widening the head 4 formed in the second head molding process again;
상기 제3머리부 성형과정에서 넓혀진 상태의 머리부(4)를 가지고 있는 베어링하우징(1)의 몸체부(11)를 세탁기(21)의 구동축(23)이 결합될 수 있도록 통공을 형성시키기 위해 몸체부(11)에 통공(12)을 가공하는 통공 가공과정과,In order to form a through-hole so that the drive shaft 23 of the washing machine 21 can be coupled to the body portion 11 of the bearing housing 1 having the head portion 4 in the expanded state during the third head forming process. Through hole processing process for processing the through hole 12 in the body portion 11,
상기 통공 가공 과정에서 가공된 통공(12)을 관통시키는 통공 관통과정과,Through-through process through the through-hole 12 processed in the through-processing process,
상기 통공 관통과정을 거친 가공물 표면의 이물질 및 흠등을 제거하기 위한 쇼트과정과,Short process for removing the foreign matter and scratches on the workpiece surface through the through-hole process,
상기 쇼트과정을 거친 가공물 표면으로 윤활제를 도포하여 단조가 용이토록 하기 위한 피막과정과,Coating process to facilitate the forging by applying a lubricant to the surface of the workpiece after the short process,
상기 피막과정을 거친 가공물의 머리부(4)를 이완시키기 위한 머리부 이완과정과.Head relaxation process for relaxing the head (4) of the workpiece after the coating process.
상기 머리부 이완과정을 거친 베어링하우징(1)의 머리부(4)에 세탁기(21)의 기어(22)를 결합시킬 수 있는 돌기(6)들을 성형하기 위해 펀칭에 의해 다수개의 돌기(6)들을 성형하는 돌기 성형과정과,A plurality of protrusions 6 are formed by punching to form protrusions 6 capable of coupling the gear 22 of the washing machine 21 to the head 4 of the bearing housing 1 which has undergone the head relaxation process. Process of forming the projections,
상기 돌기 성형과정에 의해 돌기(6)들을 성형하고 있는 머리부(4)의 외곽을 트리밍하는 외곽 트리밍과정으로 이루어진 것이다.By the process of forming the projections, the outer trimming is performed by trimming the outline of the head 4 forming the projections 6.
상기와 같이된 종래의 베어링하우징 성형방법중 커팅과정,제1머리부 성형과정,제2머리부 성형과정,제3머리부 성형과정,통공 가공과정,통공 관통과정의 6과정은 냉간다단성형기에 의해 작업이 이루어지게 된다.In the conventional bearing housing forming method as described above, the six steps of the cutting process, the first head forming process, the second head forming process, the third head forming process, the through-hole process, and the through-through process are carried out in the cold-ganda forming machine. Work is done.
따라서, 상기 베어링하우징(1)을 성형하기 위해서는 11과정을 거쳐야 하는 많은 제조 공수에 의해 생산성이 저하되고 제조원가가 상승되는 문제점을 가지고 있었다.Therefore, in order to mold the bearing housing 1, productivity has been reduced and manufacturing cost has been increased due to a large number of manufacturing mandatory steps.
특히, 상기의 성형 방법은 한 기계내에서 작업과정이 이루어지는 것이 아니라 여러 장소를 옮겨가면서 공정이 이루어지기 때문에 그만큼 시간의 낭비도 많게 되고 불량품의 발생률도 높아지게 되는 문제점을 가지고 있었다.In particular, the above molding method has a problem that the work process is not made in one machine, but the process is carried out while moving to various places, which increases the waste of time and the incidence of defective products.
이러한 종래의 문제점등을 해결 보완하기 위한 본발명의 목적은,The purpose of the present invention for solving and solving these conventional problems,
세탁기의 베어링 하우징을 냉간 다단성형기 및 파워프레스에 의해 신속하고 정확하게 성형함으로서 제조공수절감 및 제조원가등을 감축시킬 수 있고 생산성의 향상 효과 및 불량품의 발생률을 최소화시킬 수 있도록 하는 목적을 제공한다.By forming the bearing housing of the washing machine quickly and accurately by the cold multi-stage molding machine and the power press, it is possible to reduce manufacturing labor and manufacturing cost, and to improve productivity and minimize the incidence of defective products.
상기의 목적을 달성하기 위하여 본발명은,In order to achieve the above object, the present invention,
세탁기의 구동축에 결합되어 베어링을 지지하는 베어링 하우징을 커팅과정, 제1머리부 성형과정, 제2머리부 성형과정, 머리부 이완과정, 통공 가공과정, 통공 관통과정, 돌기 성형과정, 외곽 트리밍과정등의 8과정에 의해 냉간 다단성형기 및 파워프레스로 성형시키면 본발명의 목적을 달성할 수 있게 된다.Cutting the bearing housing coupled to the drive shaft of the washing machine to support the bearing, cutting the first head, forming the second head, relaxing the head, through-hole, through-through, protrusion forming, and outer trimming By forming into a cold multi-stage molding machine and a power press by 8 processes such as can achieve the object of the present invention.
도1은 종래 베어링 하우징이 세탁기에 결합된 상태를 나타낸 도면1 is a view showing a state in which a conventional bearing housing is coupled to a washing machine;
도2a, 2b 및 2c는 종래 베어링 하우징의 성형 방법을 나타낸 과정도면Figures 2a, 2b and 2c is a process drawing showing a method of forming a conventional bearing housing
도3a, 3b 및 3c는 본발명 베어링 하우징의 성형 방법을 나타낸 과정도면Figures 3a, 3b and 3c is a process drawing showing a method of forming the present invention bearing housing
도4는 본발명 베어링 하우징의 구성을 나타낸 측면도Figure 4 is a side view showing the configuration of the present invention bearing housing
<도면중 중요 부분에 대한 부호설명><Description of Signs of Important Parts in Drawing>
101-베어링 하우징 102-모재101-bearing housing 102-base material
103-돌출부 104-머리부103-projection 104-head
105-고정홈 106-돌기105-fixed groove 106-protrusion
111-몸체부 112-통공111-body 112-through
본발명 베어링하우징의 성형방법을 도3a, 3b 및 3c에 의해 과정별로 상세히 설명하기로 한다.The molding method of the present invention bearing housing will be described in detail with respect to each process by FIGS. 3A, 3B and 3C.
완제품의 체적을 구하여 필요한 길이 만큼 모재(102)를 커팅하는 커팅과정과,The cutting process of cutting the base material 102 to the required length by obtaining the volume of the finished product,
상기 커팅과정에서 커팅된 모재(102)에 머리부(104)를 예비 성형하기 위해 금형에 의해 펀칭하여 돌출부(103)를 성형시키는 제1머리부 성형과정과,A first head molding process of forming a protrusion 103 by punching by a mold to preform the head 104 on the base material 102 cut in the cutting process;
상기 제1머리부 성형과정에서 성형된 돌출부(103)를 펀칭하여 진원 상태의 머리부(104)를 성형하는 제2머리부 성형과정과,A second head molding process of forming the head 104 in a round shape by punching the protrusion 103 formed in the first head molding process;
상기 제2머리부 성형과정에서 성형된 머리부(104)를 펀칭에 의해 진원상태로 이완시키는 동시에 머리부(104)의 배면에 고정홈(105)들을 성형시키는 머리부 이완과정과,A head relaxing process of relaxing the head 104 formed in the second head molding process by punching to form the fixing grooves 105 on the rear surface of the head 104 at the same time;
상기 머리부 이완과정에서 이완된 상태의 머리부(104)를 가지고 있는 베어링하우징(101)의 몸체부(111)를 세탁기(21)의 구동축(23)이 결합될 수 있도록 통공 (112)을 형성시키기 위해 몸체부(111)에 통공(112)을 가공하는 통공 가공과정과,The through-hole 112 is formed so that the drive shaft 23 of the washing machine 21 can be coupled to the body 111 of the bearing housing 101 having the head 104 in the relaxed state of the head. Through hole processing process for processing the through hole 112 in the body portion 111 to make,
상기 통공 가공 과정에서 가공된 통공(112)을 관통시키기 위해 피어싱펀치를 이용하여 통공(112)을 관통시키는 통공 관통과정과,A through hole penetrating process of penetrating the through hole 112 using a piercing punch to penetrate the through hole 112 processed in the through hole process;
상기 통공 관통과정에 의해 통공(112)을 형성하고 있는 베어링 하우징(101)의 머리부(104)에 세탁기(21)의 기어(22)를 결합시킬 수 있는 돌기(106)들을 성형하기 위해 파워프레스의 펀칭에 의해 다수개의 돌기(106)들을 성형하는 돌기 성형과정과,The power press for forming the projections 106 that can couple the gear 22 of the washing machine 21 to the head 104 of the bearing housing 101 forming the through hole 112 by the through hole process. Protrusion forming process for forming a plurality of protrusions 106 by the punching of,
상기 돌기 성형과정에 의해 돌기(106)들을 성형하고 있는 머리부(104)의 외곽을 파워프레스에 의해 트리밍하는 외곽 트리밍과정으로 이루어진 것이다.The outer trimming process is performed by trimming the outer edge of the head 104 forming the protrusions 106 by the power press by the protrusion forming process.
이와같이된 본발명의 작용을 설명하면 다음과 같다.Referring to the operation of the present invention as described above is as follows.
먼저, 커팅과정에서는 롤 소재 즉, 권취되어 있는 봉(기계구조용 탄소강,냉간압조용 탄소강소재)을 풀어서 커팅을 하게 되는바, 완제품인 베어링하우징(101)의 체적을 구하여 필요한 길이 만큼 모재(102)를 커팅한다.First, in the cutting process, a roll material, that is, a rod (a carbon steel for mechanical structure, a carbon steel material for cold press), which is wound, is cut and barned, and the volume of the bearing housing 101, which is a finished product, is obtained. To cut.
그리고, 상기 커팅과정에서 커팅된 모재(102)는 제1머리부 성형과정에 의해 머리부(104)를 금형으로 펀칭하여 돌출부(103)를 성형시킨다.In addition, the base material 102 cut in the cutting process forms the protrusion 103 by punching the head 104 into a mold by the first head molding process.
또한, 상기 제1머리부 성형과정에서 성형된 돌출부(103)는 제2머리부 성형과정에 의해 재차 펀칭하여 진원 상태의 머리부(104)를 성형시킨다.In addition, the protrusion 103 formed in the first head molding process is punched again by the second head molding process to form the head 104 in a round shape.
그리고, 상기 제2머리부 성형과정에서 성형된 머리부(104)는 머리부 이완과정에서 펀칭에 의해 진원상태로 이완시키는 동시에 머리부(104)의 배면에 고정홈 (105)들을 성형시킨다.In addition, the head 104 formed in the second head molding process relaxes the circular shape by punching in the head relaxing process and simultaneously forms the fixing grooves 105 on the rear surface of the head 104.
상기 고정홈(105)들은 베어링하우징(101)이 세탁기(21)에 결합시 자회전을방지하기 위해 성형된 것이다.The fixing grooves 105 are formed to prevent self-rotation when the bearing housing 101 is coupled to the washing machine 21.
또한, 상기 머리부 이완과정에서 이완된 상태의 머리부(104)를 가지고 있는 베어링하우징(101)의 몸체부(111)에는 통공 가공과정에 의해 세탁기(21)의 구동축 (23)이 결합될 수 있도록 통공(112)을 형성시키게 된다.In addition, the drive shaft 23 of the washing machine 21 can be coupled to the body portion 111 of the bearing housing 101 having the head portion 104 in a relaxed state during the head portion relaxation process. The through hole 112 is formed to be.
그리고, 상기 통공 가공 과정에서 가공된 통공(112)은 통공 관통과정에 의해 관통을 시킨다.In addition, the through-hole 112 processed in the through-processing process may be penetrated by the through-through process.
또한, 상기 통공 관통과정에 의해 통공(112)을 형성하고 있는 베어링하우징 (101)의 머리부(104)에는 돌기 성형과정에 의해 세탁기(21)의 기어(22)를 결합시킬 수 있도록 돌기(106)들을 성형하게 된다.In addition, the projection 106 to the head portion 104 of the bearing housing 101 forming the through hole 112 by the through hole process so as to couple the gear 22 of the washing machine 21 to the through hole forming process. ) Will be molded.
그리고, 상기 돌기 성형과정에 의해 돌기(106)들을 성형하고 있는 머리부 (104)의 외곽에는 외곽 트리밍과정에 의해 파워프레스로 트리밍하여 깨끗한 외곽면을 얻을 수 있게 된다.In addition, the outside of the head 104 forming the protrusions 106 by the protrusion forming process may be trimmed with a power press by an outside trimming process to obtain a clean outside surface.
또한, 상기 외곽 트리밍과정에서 완성된 베아링 하우징(101)은 도4의 A-A선 을 단면하여 나타낸 것이다.In addition, the bearing housing 101 completed in the outer trimming process is a cross-sectional view taken along line A-A of FIG.
특히, 본발명에서는 종래 방법중 제2머리부성형과정과 쇼트과정 그리고 피막과정등을 삭제하여 베어링하우징(101)을 성형함으로서 공정의 감축 효과에 의해 제조공수절감 및 제조원가등을 감축시킬 수 있게 된다.Particularly, in the present invention, the bearing housing 101 is formed by eliminating the second head molding process, the shot process, and the film process of the conventional method, thereby reducing manufacturing man-hours and manufacturing costs due to the process reduction effect. .
이와같이된 본발명은, 세탁기의 구동축에 결합되어 베어링을 지지하는 베어링하우징을 커팅과정,제1머리부 성형과정, 제2머리부 성형과정, 머리부 이완과정,통공 가공과정, 통공 관통과정, 돌기 성형과정, 외곽 트리밍과정등의 8과정에 의해 냉간 다단성형기 및 파워프레스로 성형시킴으로서 세탁기의 베어링하우징을 신속하고 정확하게 성형할 수 있게 되어 제조공수절감 및 제조원가등을 감축시킬 수 있고 생산성의 향상 효과 및 불량품의 발생률을 최소화시킬 수 있는 유용한 효과를 갖는다.Thus, the present invention, the bearing housing coupled to the drive shaft of the washing machine to support the bearing cutting process, the first head forming process, the second head forming process, head relaxation process, through machining process, through-hole process, protrusion By forming by cold multi-stage molding machine and power press by 8 processes such as molding process and outer trimming process, bearing housing of washing machine can be formed quickly and accurately, which can reduce manufacturing labor and manufacturing cost, and improve productivity and It has a useful effect to minimize the incidence of defective products.

Claims (1)

  1. 완제품의 체적을 구하여 필요한 길이 만큼 모재를 커팅하는 커팅과정과,The cutting process of cutting the base material to the required length by obtaining the volume of the finished product,
    상기 커팅과정에서 커팅된 모재에 머리부를 예비 성형하기 위해 금형에 의해 펀칭하여 돌출부를 성형시키는 제1머리부 성형과정과,A first head molding process of forming a protrusion by punching with a mold to preform the head on the base material cut in the cutting process;
    상기 제1머리부 성형과정에서 성형된 돌출부를 펀칭하여 진원 상태의 머리부를 성형하는 제2머리부 성형과정과,A second head molding process of forming a round head by punching the protrusion formed in the first head molding process;
    상기 제2머리부성형과정에서 성형된 머리부를 펀칭에 의해 진원상태로 이완시키는 동시에 머리부의 배면에 고정홈들을 성형시키는 머리부 이완과정과,A head relaxation process of relaxing the head portion formed in the second head molding process by punching and forming the fixing grooves on the back of the head;
    상기 머리부 이완과정에서 이완된 상태의 머리부를 가지고 있는 베어링하우징의 몸체부에 세탁기의 구동축이 결합될 수 있도록 통공을 형성시키기 위해 몸체부에 통공을 가공하는 통공 가공과정과,A through-hole processing process of processing the through-hole in the body to form a through-hole so that the drive shaft of the washing machine can be coupled to the body of the bearing housing having the head in the relaxed state of the head;
    상기 통공 가공 과정에서 가공된 통공을 관통시키기 위해 피어싱펀치를 이용하여 통공을 관통시키는 통공 관통과정과,A through-hole through-process through the through-hole using a piercing punch to penetrate the through-hole processed in the through-processing process;
    상기 통공 관통과정에 의해 통공이 형성된 베어링하우징의 머리부에 세탁기의 기어를 결합시킬 수 있는 돌기들을 성형하기 위해 파워프레스의 펀칭에 의해 다수개의 돌기들을 성형하는 돌기 성형과정과,A projection forming process of forming a plurality of projections by punching a power press to form projections that can couple the gears of the washing machine to the head of the bearing housing in which the through-holes are formed;
    상기 돌기 성형과정에 의해 돌기들을 성형하고 있는 머리부의 외곽을 파워프레스에 의해 트리밍하는 외곽 트리밍과정으로 이루어진 것을 특징으로 하는 세탁기용 베어링 하우징의 성형방법.Method for forming a bearing housing for a washing machine comprising an outer trimming process for trimming the outer edge of the head forming the protrusions by the power press by the protrusion forming process.
KR1020000019414A 2000-04-12 2000-04-12 Washing machine KR100357978B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101053576B1 (en) 2003-12-11 2011-08-03 엘지전자 주식회사 Manufacturing method of bearing housing of washing machine

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* Cited by examiner, † Cited by third party
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KR100872795B1 (en) * 2007-07-18 2008-12-09 주식회사 코우 Spool connector manufacturing metod for retractor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06277788A (en) * 1993-03-30 1994-10-04 Musashi Seimitsu Ind Co Ltd Method for cold-forging housing with flange
JPH0852530A (en) * 1994-08-09 1996-02-27 Nippondenso Co Ltd Cold forging method of flanged hollow part
JPH09103839A (en) * 1995-10-06 1997-04-22 Musashi Seimitsu Ind Co Ltd Production of housing for ball joint
JPH10180398A (en) * 1996-12-26 1998-07-07 Musashi Seimitsu Ind Co Ltd Method for forging circular-cylinderlike housing having internal circumference flange

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06277788A (en) * 1993-03-30 1994-10-04 Musashi Seimitsu Ind Co Ltd Method for cold-forging housing with flange
JPH0852530A (en) * 1994-08-09 1996-02-27 Nippondenso Co Ltd Cold forging method of flanged hollow part
JPH09103839A (en) * 1995-10-06 1997-04-22 Musashi Seimitsu Ind Co Ltd Production of housing for ball joint
JPH10180398A (en) * 1996-12-26 1998-07-07 Musashi Seimitsu Ind Co Ltd Method for forging circular-cylinderlike housing having internal circumference flange

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101053576B1 (en) 2003-12-11 2011-08-03 엘지전자 주식회사 Manufacturing method of bearing housing of washing machine

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