WO2011065297A1 - 板状歯形部材の製造装置 - Google Patents
板状歯形部材の製造装置 Download PDFInfo
- Publication number
- WO2011065297A1 WO2011065297A1 PCT/JP2010/070658 JP2010070658W WO2011065297A1 WO 2011065297 A1 WO2011065297 A1 WO 2011065297A1 JP 2010070658 W JP2010070658 W JP 2010070658W WO 2011065297 A1 WO2011065297 A1 WO 2011065297A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tooth
- mold
- plate
- tooth profile
- profile member
- Prior art date
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
- B21J13/025—Dies with parts moving along auxiliary lateral directions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/12—Forming profiles on internal or external surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
- B21K1/767—Toothed racks
Definitions
- the present invention relates to an apparatus for manufacturing a plate-shaped tooth profile member, and more particularly to an apparatus for manufacturing a plate-shaped tooth profile member comprising a sealed upper mold and a lower mold.
- a steering rack for example, complicated in shape
- a variable steering rack and a manufacturing method and apparatus have been proposed and put to practical use by the present applicant and the like (for example, Patent Document 1).
- the steering rack manufacturing apparatus described in Patent Document 1 performs forging molding using a hermetically sealed mold formed so as to absorb escape of the material due to plastic deformation according to the shape of the steering rack to be molded.
- a hermetically sealed mold formed so as to absorb escape of the material due to plastic deformation according to the shape of the steering rack to be molded.
- the upper mold and the lower mold are each formed as an integral mold, the upper mold and the lower mold are used from the beginning of the process of forming the tooth portion on the steering rack material.
- the peripheral surfaces of both ends in the axial direction of the steering rack material cannot be constrained, and as a result, the meat of the tooth forming portion of the steering rack material escapes to the axial end of the steering rack material, and the position
- burrs are generated or the tooth forming portion of the steering rack material is insufficient, resulting in a decrease in yield during product manufacture and a decrease in product molding accuracy.
- the present invention can perform forging molding in one step using a hermetically sealed mold, and the circumference of the material of the plate-like tooth profile member. It is an object of the present invention to provide a manufacturing apparatus for a plate-like tooth profile member in which plastic changes in the direction and the axial direction are unlikely to occur as burrs, and the yield during product manufacture and the molding accuracy of the product can be improved.
- a manufacturing apparatus for a plate-like tooth profile member of the present invention is a plate-like tooth profile member manufacturing apparatus composed of an upper mold and a lower mold of a sealing type, and is one of an upper mold and a lower mold.
- the mold is movable in the vertical direction relative to the tooth mold that forms teeth on the material of the plate-shaped tooth profile member and the tooth mold disposed on both sides in the axial direction of the material of the plate-shaped tooth profile member of the tooth mold.
- a tooth portion is formed on the material of the plate-like tooth profile member by using the other mold and the tooth mold of the upper mold and the lower mold.
- the tooth mold is divided in a direction orthogonal to the axial direction of the plate-shaped tooth profile member material, and a tooth surface forming mold for forming a tooth surface on the plate tooth profile material is disposed on both sides thereof.
- the tooth portion side surface forming mold for forming the tooth portion side surface of the material of the plate-like tooth profile member can be used.
- the tooth side surface forming mold can be constituted by a base portion and a tooth side surface forming piece for forming a tooth side surface of the material of the plate-like tooth profile member detachably disposed on the base portion.
- the other mold of the upper mold and the lower mold and the movable mold in the first step, the both ends in the axial direction of the material of the plate-shaped tooth profile member.
- the other mold and the tooth mold of the upper mold and the lower mold are formed with a tooth portion on the material of the plate-shaped tooth profile member. From the beginning of the process of forming the tooth portion on the material of the tooth profile member, it becomes possible to restrain the peripheral surfaces of both ends in the axial direction of the material of the plate tooth profile member by the upper mold and the lower mold.
- the tooth portion can be formed from the raw material of the thin plate-like tooth profile member, and the weight of the product can be reduced.
- the tooth mold is divided in a direction perpendicular to the axial direction of the material of the plate-shaped tooth profile member, a tooth surface forming mold for forming a tooth surface on the material of the plate-shaped tooth profile member, and a plate disposed on both sides thereof
- the tooth side surface forming mold can reliably absorb the surplus of the material due to the plastic deformation, and the yield at the time of product manufacture and the molding accuracy of the product can be improved.
- the tooth part side surface forming mold is constituted by a base part and a tooth part side surface forming piece that forms the tooth side surface of the material of the plate-like tooth profile member detachably disposed on the base part.
- FIG. 1 and FIG. 2 show an embodiment of a plate-like tooth profile manufacturing apparatus according to the present invention.
- This plate-shaped tooth profile member manufacturing apparatus is for manufacturing a steering rack as a plate-shaped tooth profile member.
- the plate-shaped tooth profile member includes an upper mold 1 and a lower mold 2 that are hermetically sealed, and an upper mold 1 and a lower mold 2.
- the lower mold 2 is disposed on both sides of the tooth rack 21 in the axial direction of the tooth rack 21 and the tooth rack 21 of the tooth rack 21.
- the other mold of the upper mold 1 and the lower mold 2 in the first process the upper mold 1 and the movable molds 22 and 22 constrain the peripheral surfaces of both ends in the axial direction of the steering rack material W, and then the other mold of the upper mold 1 and the lower mold 2 in the second stroke.
- the upper mold 1 and the tooth mold 21 form teeth on the steering rack material W. It is sea urchin.
- the tooth mold 21 is divided in a direction orthogonal to the axial direction of the steering rack material W, the tooth surface forming mold 21a forming the tooth surface on the steering rack material W, and the steering rack disposed on both sides thereof.
- the tooth portion side surface forming mold 21b that forms the tooth portion side surface of the material W is configured.
- the tooth portion side surface forming die 21b can be attached to and detached from the base portion 21b1 and the base portion 21b1 by the screw member 21c.
- the tooth rack side surface forming piece 21b2 that forms the tooth side surface of the steering rack material W is provided.
- the tooth side surface forming piece 21b2 defines the tooth side surface of the steering rack material W.
- the excess of the material due to plastic deformation is surely absorbed.
- the yield at the time of manufacture and the molding accuracy of the product can be improved, and by disposing the tooth portion side surface forming piece 21b2 to the base portion 21b1 so as to be detachable by the screw member 21c as in this embodiment, The shape of the tooth side surface forming piece 21b2 can be easily changed.
- the movable mold 22 is composed of an upper movable mold 22a and a lower movable mold 22b divided in the vertical direction, and an urging means such as a spring 22c is disposed between the upper movable mold 22a and the upper movable mold 22a.
- a groove-shaped material accommodating portion is provided so that the respective axial end portions of the steering rack material W can be restrained.
- a space is formed in which one end side of the material accommodating portion formed in the upper movable mold 22a and the lower movable mold 22b is closed with the upper movable mold 22a and the lower movable mold 22b in contact with each other.
- the draft angle is formed on the end face on one end side of the material accommodating portion, while the other end side is opened in a state where the upper movable mold 22a and the lower movable mold 22b are in contact with each other.
- the one end side of the steering rack material W is configured to be led out, but the material container can be appropriately configured according to the steering rack material W (steering rack to be manufactured).
- the upper mold 1 is different from the lower mold 2 and is formed as an integral part, forming approximately half of the outer periphery of the tooth portion of the steering rack material W, and each of the axial directions.
- the groove-shaped material accommodating portion is provided so that the end portions of the upper die 1 and the lower die 2 can be constrained, the configurations of the upper die 1 and the lower die 2 can be set in reverse.
- a material suitable for the steering rack to be manufactured for example, a round bar steel material such as medium carbon steel is cut into a predetermined length, and the cut steering rack material W is subjected to polishing, rough lace processing, and the like.
- the steering rack material W subjected to the race processing is heated to a temperature suitable for forging, for example, 750 ° C. to 900 ° C. (this temperature varies depending on the material of the steering rack material W) in the case of warm forging. .
- this heating can also be performed by induction heating or energization heating, so that it can be heated to a predetermined temperature in a short time, and generation of oxide scale and decarburization can be prevented.
- the temperature control can be accurately performed for each part according to the shape of the steering rack to be molded.
- the steering rack material W having a temperature suitable for forging is forged by a plate-shaped tooth profile member manufacturing apparatus including a sealed upper mold 1 and a lower mold 2.
- the peripheral surfaces of both ends in the axial direction of the steering rack material W by the upper mold 1 and the lower mold 2 from the beginning of the step of forming the teeth on the steering rack material W As a result, it is possible to prevent the meat of the tooth portion forming portion of the steering rack material W from escaping to the axial end portion side of the steering rack material W. As a result, plastic changes in the circumferential direction and the axial direction of the steering rack material W are less likely to occur as burrs, and the tooth rack forming portion of the steering rack material W is not deficient, resulting in a yield during product manufacture. And the molding accuracy of the product can be improved. Further, the tooth portion can be formed from the steering rack material W having a small diameter, and the weight of the product can be reduced.
- the steering rack material W subjected to rough lace processing and brought to a temperature suitable for forging is forged by a plate-shaped tooth profile member manufacturing apparatus composed of the upper mold 1 and the lower mold 2 of the sealing method.
- the steering rack P with high molding accuracy can be manufactured in one process.
- the steering rack P manufactured in this way has a radius Rp of the portion where the steering rack P is supported by the yoke Y (the support surface of the yoke Y that supports the steering rack P), as shown in FIGS.
- the center Po of the steering rack P and the center Yo of the yoke Y are shifted so that the pinion gear G and the steering rack P mesh with each other.
- the yoke Y is pushed with the center shifted, so that the steering rack P can be prevented from swinging.
- FIG. 5 shows the swing amount when the center Po of the steering rack P and the center Yo of the yoke Y are shifted from each other.
- FIG. 5 by shifting the center Po of the steering rack P and the center Yo of the yoke Y, the swinging amount of the steering rack P can be reduced as compared with the case where the two are matched.
- the meshing state of the steering rack P can be stabilized.
- the manufacturing apparatus of the plate-shaped tooth profile member of the present invention has been described based on one embodiment of an apparatus for manufacturing a steering rack, the present invention is not limited to the configuration described in the above embodiment, The configuration can be changed as appropriate without departing from the spirit of the invention, and the object to be manufactured is not limited to the steering rack, and an apparatus for manufacturing various plate-like tooth profile members is not excluded.
- the apparatus for producing a plate-like tooth profile member of the present invention can perform forging molding in one process using a hermetically sealed mold, and the plastic change in the circumferential direction and the axial direction of the material of the plate-like tooth profile member. Since it is difficult to generate burrs and the yield during product manufacturing and product molding accuracy can be improved, it is possible to manufacture steering racks such as variable steering racks with complex shapes and other plate-like tooth profile members. It can use suitably for a use.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Gears, Cams (AREA)
Abstract
Description
これにより、板状歯形部材の素材の周方向及び軸方向の塑性変化がバリとなって発生しにくく、また、板状歯形部材の素材の歯部形成部の肉が不足することがなく、製品製造時の歩留まり及び製品の成形精度を向上することができる。
また、細径の板状歯形部材の素材からの歯部形成が可能となり、製品の軽量化を図ることが可能となる。
この板状歯形部材の製造装置は、板状歯形部材としてのステアリングラックを製造するためのもので、密閉方式の上金型1及び下金型2からなり、上金型1及び下金型2の一方の金型、本実施例においては、下金型2を、ステアリングラック素材Wに歯部を形成する歯型21と、この歯型21のステアリングラック素材Wの軸方向の両側に配設した歯型21と上下方向に相対的に移動可能な可動型22、22とで構成し、第1行程で、上金型1及び下金型2の他方の金型、本実施例においては、上金型1と可動型22、22とで、ステアリングラック素材Wの軸方向の両端部の周面を拘束した後、第2行程で、上金型1及び下金型2の他方の金型、本実施例においては、上金型1と歯型21とで、ステアリングラック素材Wに歯部を形成するようにされている。
ここで、歯部側面形成片21b2は、ステアリングラック素材Wの歯部側面を規定するものであるが、その形状を適宜設計することによって、塑性変形による素材の余剰を確実に吸収して、製品製造時の歩留まり及び製品の成形精度を向上することができ、本実施例のように、歯部側面形成片21b2を基体部21b1にねじ部材21cにより着脱可能となるように配設することにより、歯部側面形成片21b2の形状の変更を容易に行うことができる。
また、本実施例においては、上金型1は、下金型2とは異なり、一体のもので構成し、ステアリングラック素材Wの歯部の外周の略半分を形成するとともに、軸方向のそれぞれの端部を拘束することができるように、溝状の素材収容部を備えるようにしているが、上金型1及び下金型2の構成を逆に設定することもできる。
次に、レース加工を施したステアリングラック素材Wを鍛造に適した温度、例えば、温間鍛造の場合は、750℃~900℃(この温度はステアリングラック素材Wの材質により異なる。)に加熱する。この加熱は、加熱炉を用いて行うほか、誘導加熱や通電加熱により行うこともでき、これにより、短時間に所定の温度に加熱することができ、酸化スケールの発生や脱炭を防止することができるとともに、温度制御を成形するステアリングラックの形状に応じて部位別に正確に行うことができるものとなる。
これにより、ステアリングラック素材Wの周方向及び軸方向の塑性変化がバリとなって発生しにくく、また、ステアリングラック素材Wの歯部形成部の肉が不足することがなく、製品製造時の歩留まり及び製品の成形精度を向上することができる。
また、細径のステアリングラック素材Wからの歯部形成が可能となり、製品の軽量化を図ることが可能となる。
図5に、ステアリングラックPのセンターPoとヨークYのセンターYoをずらすようにした場合と一致させた場合の揺動量を示す。
図5に示すように、ステアリングラックPのセンターPoとヨークYのセンターYoをずらすようにすることによって、両者を一致させた場合と比較して、ステアリングラックPが揺動量を小さくすることができ、ステアリングラックPの噛合状態を安定させることができる。
2 下金型
21 歯型
21a 歯面形成型
21b 歯部側面形成型
21b1 基体部
21b2 歯部側面形成片
21c ねじ部材
22 可動型
22a 上部可動型
22b 下部可動型
22c ばね
P ステアリングラック(板状歯形部材)
W ステアリングラック素材(板状歯形部材の素材)
Claims (3)
- 密閉方式の上金型及び下金型からなる板状歯形部材の製造装置において、上金型及び下金型の一方の金型を、板状歯形部材の素材に歯部を形成する歯型と、該歯型の板状歯形部材の素材の軸方向の両側に配設した歯型と上下方向に相対的に移動可能な可動型とで構成し、第1行程で、上金型及び下金型の他方の金型と可動型とで、板状歯形部材の素材の軸方向の両端部の周面を拘束した後、第2行程で、上金型及び下金型の他方の金型と歯型とで、板状歯形部材の素材に歯部を形成するようにしたことを特徴とする板状歯形部材の製造装置。
- 前記歯型を、板状歯形部材の素材の軸方向と直交する方向で分割した、板状歯形部材の素材に歯面を形成する歯面形成型と、その両側に配設した、板状歯形部材の素材の歯部側面を形成する歯部側面形成型とで構成したことを特徴とする請求項1記載の板状歯形部材の製造装置。
- 歯部側面形成型を、基体部と、該基体部に着脱可能に配設した板状歯形部材の素材の歯部側面を形成する歯部側面形成片とで構成したことを特徴とする請求項2記載の板状歯形部材の製造装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201080053357.6A CN102686331B (zh) | 2009-11-26 | 2010-11-19 | 板状齿形部件的制造装置 |
US13/509,846 US9032773B2 (en) | 2009-11-26 | 2010-11-19 | Manufacturing apparatus of plate-like tooth profile member |
JP2011543228A JP5059232B2 (ja) | 2009-11-26 | 2010-11-19 | 板状歯形部材の製造装置 |
EP10833143.0A EP2505280A4 (en) | 2009-11-26 | 2010-11-19 | DEVICE FOR PRODUCING A PLATED GEAR WHEEL ELEMENT |
KR1020127013582A KR101754851B1 (ko) | 2009-11-26 | 2010-11-19 | 판형상 톱니형 부재의 제조 장치 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009268542 | 2009-11-26 | ||
JP2009-268542 | 2009-11-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011065297A1 true WO2011065297A1 (ja) | 2011-06-03 |
Family
ID=44066401
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2010/070658 WO2011065297A1 (ja) | 2009-11-26 | 2010-11-19 | 板状歯形部材の製造装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US9032773B2 (ja) |
EP (1) | EP2505280A4 (ja) |
JP (1) | JP5059232B2 (ja) |
KR (1) | KR101754851B1 (ja) |
CN (1) | CN102686331B (ja) |
WO (1) | WO2011065297A1 (ja) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09506550A (ja) * | 1993-12-16 | 1997-06-30 | エイ イー ビショップ アンド アソシエイツ プロプライエタリー リミテッド | かじ取りラックバーの製造装置 |
JP2000153336A (ja) | 1998-11-16 | 2000-06-06 | Gooshuu:Kk | ステアリングラックの製造方法 |
JP2004523365A (ja) * | 2001-03-22 | 2004-08-05 | ビショップ イノヴェーション リミテッド | 鍛造ラックの製造方法および装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0110918B1 (en) * | 1982-06-04 | 1989-08-30 | Arthur Ernest Bishop | Method and apparatus for making steering rack bars |
JP3772090B2 (ja) * | 2000-12-18 | 2006-05-10 | 高周波熱錬株式会社 | ラック付き管状部材の製造方法 |
CA2548148A1 (en) * | 2003-12-04 | 2005-06-16 | Bishop Innovation Limited | Steering rack manufacture |
-
2010
- 2010-11-19 CN CN201080053357.6A patent/CN102686331B/zh not_active Expired - Fee Related
- 2010-11-19 US US13/509,846 patent/US9032773B2/en not_active Expired - Fee Related
- 2010-11-19 WO PCT/JP2010/070658 patent/WO2011065297A1/ja active Application Filing
- 2010-11-19 JP JP2011543228A patent/JP5059232B2/ja active Active
- 2010-11-19 KR KR1020127013582A patent/KR101754851B1/ko active IP Right Grant
- 2010-11-19 EP EP10833143.0A patent/EP2505280A4/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09506550A (ja) * | 1993-12-16 | 1997-06-30 | エイ イー ビショップ アンド アソシエイツ プロプライエタリー リミテッド | かじ取りラックバーの製造装置 |
JP2000153336A (ja) | 1998-11-16 | 2000-06-06 | Gooshuu:Kk | ステアリングラックの製造方法 |
JP2004523365A (ja) * | 2001-03-22 | 2004-08-05 | ビショップ イノヴェーション リミテッド | 鍛造ラックの製造方法および装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2505280A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP2505280A4 (en) | 2015-12-23 |
KR20120101023A (ko) | 2012-09-12 |
CN102686331B (zh) | 2015-11-25 |
US9032773B2 (en) | 2015-05-19 |
US20120247172A1 (en) | 2012-10-04 |
KR101754851B1 (ko) | 2017-07-06 |
CN102686331A (zh) | 2012-09-19 |
JP5059232B2 (ja) | 2012-10-24 |
JPWO2011065297A1 (ja) | 2013-04-11 |
EP2505280A1 (en) | 2012-10-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN102438768B (zh) | 用以制造变速器同步装置的构件的方法 | |
CN106660108B (zh) | 空心齿条杆及其制造方法 | |
WO2004082872A3 (en) | Method and apparatus for strengthening of powder metal gears by ausforming | |
JP2016179475A (ja) | ラックバー及びラックバーの製造方法 | |
JP2013522048A (ja) | プレス硬化プラント、及び、鋼板ブランクをプレス硬化する方法 | |
JP3975040B2 (ja) | 歯車及び歯車の製造方法 | |
JP5804015B2 (ja) | 補正機能を有する屈曲部材の製造装置および屈曲部材の製造方法 | |
EP3398710A2 (en) | Method for manufacturing gear and gear manufactured by same method | |
CN103212959A (zh) | 一种齿块的成形方法 | |
CN104159687A (zh) | 机械结构部件、烧结齿轮及生产机械结构部件和烧结齿轮的方法 | |
CN103419002A (zh) | 大模数高凸台伞齿轮的温冷精密成形方法 | |
JP4946166B2 (ja) | 歯形付き成形品の製造方法 | |
JP5059232B2 (ja) | 板状歯形部材の製造装置 | |
JP2000153336A (ja) | ステアリングラックの製造方法 | |
JP5646137B2 (ja) | ラックバー | |
KR101954757B1 (ko) | 기어 제조 방법 및 그 제조 방법에 의해서 제조된 기어 | |
JP2018176263A (ja) | 鍛造品の成形加工方法及び鍛造品 | |
JP2015516303A (ja) | 内歯車歯を有する厚壁の中空ホイールを製造するための装置および方法 | |
KR101215240B1 (ko) | 스티어링 랙바 제조 장치 및 그 제조 방법 | |
CN104646971A (zh) | 大功率传动摩托车差速轮加工方法 | |
JP4919556B2 (ja) | 歯車の製造方法 | |
JP2017202502A (ja) | 鍛造ベベルギアの製造方法及びこれに用いる冷間サイジング型 | |
KR20120081388A (ko) | 가변기어비를 가진 랙바의 제조방법 | |
KR100835933B1 (ko) | 조향장치용 피니언 샤프트 가공을 위한 중간성형물과 그중간성형물 제조방법 | |
KR101611372B1 (ko) | 중공소재용 예비 성형장치 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201080053357.6 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10833143 Country of ref document: EP Kind code of ref document: A1 |
|
DPE1 | Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2011543228 Country of ref document: JP |
|
ENP | Entry into the national phase |
Ref document number: 20127013582 Country of ref document: KR Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010833143 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13509846 Country of ref document: US |