JPH0446650A - Method for forming torsion bar for steering - Google Patents
Method for forming torsion bar for steeringInfo
- Publication number
- JPH0446650A JPH0446650A JP15329590A JP15329590A JPH0446650A JP H0446650 A JPH0446650 A JP H0446650A JP 15329590 A JP15329590 A JP 15329590A JP 15329590 A JP15329590 A JP 15329590A JP H0446650 A JPH0446650 A JP H0446650A
- Authority
- JP
- Japan
- Prior art keywords
- product
- forged
- semi
- finished product
- diameter
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 12
- 239000000047 product Substances 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000011265 semifinished product Substances 0.000 claims abstract description 5
- 239000007769 metal material Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 abstract description 5
- 238000005242 forging Methods 0.000 abstract description 4
- 238000000465 moulding Methods 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
Landscapes
- Steering Controls (AREA)
- Springs (AREA)
- Forging (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、ハンドルコラム内に収容されて、ハンドルと
ハンドル軸とを連結するステアリング用トーションバー
に関し、特にその成形方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a steering torsion bar that is housed in a steering wheel column and connects a steering wheel and a steering wheel shaft, and particularly relates to a method for molding the steering torsion bar.
（従来の技術）
従来の技術として、第６１ｍおよび第７図に示す成形方
法があった。(Prior Art) As a conventional art, there is a molding method shown in FIG. 61m and FIG.
まず第６図に示すように、金属性の棒材を所定の長さで
切断して長尺かつ円柱状の素材１０を設け１次いで第７
図に示すように、上記素材１０の外周部を切削加工によ
り、左右両端部を大径かつ短尺な円柱状の連結部１１ａ
、ｌｌｂに形成し、また中間部を小径かつ長尺な軸部１
１ｃに形成し、これにより準完成品１１を得るようにし
たものがあった。First, as shown in FIG.
As shown in the figure, by cutting the outer periphery of the material 10, both left and right ends are formed into large-diameter and short cylindrical connecting portions 11a.
, llb, and the intermediate portion is formed into a small diameter and long shaft portion 1.
1c, thereby obtaining a semi-finished product 11.
（発明が解決しようとする課題）
上記従来のものは１円柱状の素材１０を切削加工して所
定形状の準完成品１１を得るようにしていたので５切削
量が増大して材料の歩留まりが悪くなる。(Problem to be Solved by the Invention) In the conventional method described above, a cylindrical material 10 is cut to obtain a semi-finished product 11 of a predetermined shape, so the amount of cutting increases and the yield of the material decreases. Deteriorate.
また、軸部ｌｉｅは小径のため加工時に変形し易く、加
工精度が不安定になる欠点があった。Further, since the shaft portion lie has a small diameter, it is easily deformed during machining, resulting in unstable machining accuracy.
本考案は、上記欠点を解消した新規なステアリング用ト
ーションバーの成形方法を得ることを目的とする。The object of the present invention is to provide a novel method for forming a torsion bar for steering that eliminates the above-mentioned drawbacks.
（課題を解決するための手段）
本発明は、上記目的を達成するために、以下の如く構成
したものである。(Means for Solving the Problems) In order to achieve the above object, the present invention is configured as follows.
即ち、金属資材からなる短尺かつ円柱状の素材を設け、
この素材を鍛造加工して一端が開口し他端が閉塞された
有底円筒状となる一次製品に成形し、次いで一次製品を
鍛造加工して一端部が大径かつ短尺の筒状に、他端部が
小径かつ長尺の筒状となる二次製品に成形し１次いで二
次製品を絞り加工して中間部が両端部よりも小径にかつ
充実した長尺の軸状となる辛党成品に成形する構成にし
たものである。That is, a short cylindrical material made of metal material is provided,
This material is forged to form a primary product into a bottomed cylindrical shape with one end open and the other end closed, and then the primary product is forged into a cylindrical shape with one end having a large diameter and a short length, and the other end being forged into a cylindrical shape with a large diameter and short length. The end part is formed into a secondary product with a small diameter and long cylindrical shape, and the secondary product is then drawn to produce a spicy product with the middle part having a smaller diameter than both ends and a solid long shaft shape. It is configured to be molded.
（作用）
本発明は上記構成にしたものであるから、素材は塑性変
形によって所定形状の辛党成品に成形されるため、材料
の歩留まりが高くなる。(Function) Since the present invention has the above-mentioned configuration, the material is formed into a spicy product having a predetermined shape by plastic deformation, so that the yield of the material is increased.
また、鍛造加工によって素材が軸方向にかつ中空状に引
き延ばされた後に、その長手方向中間部が絞り加工によ
って軸心方向に絞られるので、絞り加工が容易になると
ともに、絞り加工時の負荷が小さくなる。In addition, after the material is elongated in the axial direction into a hollow shape by forging, the intermediate part in the longitudinal direction is narrowed in the axial direction by drawing, which makes the drawing process easier. The load becomes smaller.
（実施例） 以下本発明の実施例を図面に基いて説明する。(Example) Embodiments of the present invention will be described below based on the drawings.
図面において、第１図〜第４図は本発明による各成形工
程を示す断面図、第５図は完成品の側面図である。In the drawings, FIGS. 1 to 4 are sectional views showing each molding process according to the present invention, and FIG. 5 is a side view of the finished product.
まず鍛造加工により第１図に示すように、短尺かつ円柱
状の素材１を成形する。First, as shown in FIG. 1, a short cylindrical material 1 is formed by forging.
次いで上記素材１を鍛造加工して第２図に示すように、
左部２ａが開口し、かつ右部２ｂが厚肉の壁によって閉
塞された浅い有底円筒状となる一次製品２に成形する。Next, the above-mentioned material 1 is forged, as shown in Fig. 2.
The primary product 2 is formed into a shallow cylindrical shape with a bottom, with the left part 2a open and the right part 2b closed by a thick wall.
次いで上記−次製品２を鍛造加工して第３図に示すよう
に、左端部３ａが大径かつ短尺の筒状に、また左端部３
ａを除く右部３ｂが小径かつ長尺な筒状となる二次製品
３に成形する。Next, the above-mentioned product 2 is forged so that the left end part 3a has a large diameter and short cylindrical shape, and the left end part 3a has a short cylindrical shape as shown in FIG.
The right part 3b excluding the part a is formed into a secondary product 3 having a small diameter and a long cylindrical shape.
次いで上記二次製品３をスェージング加工、つまり絞り
加工して第４図に示すように、中間部が小径かつ充実し
た長尺の軸部４ａに、左端部が大径かつ短尺の中空連結
部４ｂに、右端部が軸部４ａよりも大径にかつ中空連結
部４ｂよりも若干小径となる短尺な充実連結部４Ｃとな
る辛党成品４に成形する。Next, the secondary product 3 is subjected to a swaging process, that is, a drawing process, as shown in FIG. Then, the right end portion is formed into a spicy product 4 having a short solid connecting portion 4C having a diameter larger than that of the shaft portion 4a and slightly smaller than the hollow connecting portion 4b.
次いで第５図に示すように、上記辛党成品４の中空連結
部４ｂの中間部外周を切削加工して環状の溝４ｂ−１を
形成し、また辛党成品４の充実連結部４ｂの外周をロー
レット加工してセレーション４ｃｍ１を形成し、これに
より完成品５を得る。Next, as shown in FIG. 5, the outer periphery of the intermediate portion of the hollow connecting portion 4b of the spicy component 4 is cut to form an annular groove 4b-1, and the outer periphery of the solid connecting portion 4b of the spicy component 4 is knurled. Processing is performed to form 4 cm 1 of serrations, thereby obtaining a finished product 5.
上記実施例によれば、素材１は塑性変形によって所定形
状の辛党成品４に成形されるため、材料の歩留まりが高
くなるとともに、加工硬化によって強度が高くなる。According to the above embodiment, the raw material 1 is formed into the spicy product 4 of a predetermined shape by plastic deformation, so that the yield of the material is increased and the strength is increased by work hardening.
また、鍛造加工によって素材１が軸方向にかつ中空状に
引き延ばされた後に、その長手方向中間部が絞り加工に
よって軸心方向に絞られるので、絞り加工が容易になる
なるとともに、絞り加工時の負荷が小さくなり、小型の
装置で絞り加工することができる。In addition, after the material 1 is elongated in the axial direction into a hollow shape by forging, the intermediate portion in the longitudinal direction is narrowed in the axial direction by drawing, which facilitates the drawing process. The time load is reduced, and drawing can be performed using small equipment.
（発明の効果）
以上の説明から明らかな如く１本発明によれば、材料の
歩留まりが高くなるとともに、品質の安定したトーショ
ンバーを成形することができる効果を奏する。(Effects of the Invention) As is clear from the above description, according to the present invention, the yield of materials is increased and a torsion bar with stable quality can be molded.
第１図〜第４図は本発明による各成形工程を示す断面図
、第５図は完成品の側面図、第６図および第７図は従来
による成形工程を示す側面図である。
１：素材、２ニ一次製品、２ａ：左部、２ｂ：右部、３
：二次成形品、３ａ：左端部、３ｂ：右部、４：辛党成
品、４ａ：軸部、４ｂ：中空連結部、４ｃ：充実連結部
、４ｂ−１：溝、４ｃｍ１：セレーション、５：完成品
。
出願代理人 松 本 久1 to 4 are cross-sectional views showing each molding process according to the present invention, FIG. 5 is a side view of the finished product, and FIGS. 6 and 7 are side views showing the conventional molding process. 1: Material, 2nd primary product, 2a: Left part, 2b: Right part, 3
: Secondary molded product, 3a: Left end, 3b: Right, 4: Spicy product, 4a: Shaft, 4b: Hollow connection, 4c: Solid connection, 4b-1: Groove, 4cm1: Serration, 5: Finished product. Application agent Hisashi Matsumoto
Claims (1)
の素材を鍛造加工して一端が開口し他端が閉塞された有
底円筒状となる一次製品に成形し、次いで一次製品を鍛
造加工して一端部が大径かつ短尺の筒状に、他端部が小
径かつ長尺の筒状となる二次製品に成形し、次いで二次
製品を絞り加工して中間部が両端部よりも小径にかつ充
実した長尺の軸状となる準完成品に成形したことを特徴
とするステアリング用トーシヨンバーの成形方法。1. A short, cylindrical material made of metal material is provided, and this material is forged to form a primary product into a bottomed cylindrical shape with one end open and the other end closed.Then, the primary product is forged. Then, one end is formed into a cylindrical shape with a large diameter and a short length, and the other end is formed into a cylindrical shape with a small diameter and a long length.Then, the secondary product is drawn so that the middle part is larger than both ends. A method for forming a torsion bar for steering, characterized in that it is formed into a semi-finished product that has a small diameter and a substantial long shaft shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15329590A JP2592171B2 (en) | 1990-06-11 | 1990-06-11 | Forming method of torsion bar for steering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15329590A JP2592171B2 (en) | 1990-06-11 | 1990-06-11 | Forming method of torsion bar for steering |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0446650A true JPH0446650A (en) | 1992-02-17 |
| JP2592171B2 JP2592171B2 (en) | 1997-03-19 |
Family
ID=15559353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15329590A Expired - Lifetime JP2592171B2 (en) | 1990-06-11 | 1990-06-11 | Forming method of torsion bar for steering |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2592171B2 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0648953A1 (en) * | 1993-10-19 | 1995-04-19 | Allevard | Improvements to metallic torsionbars |
| WO1999052746A1 (en) * | 1998-04-14 | 1999-10-21 | Breed Automotive Technology, Inc. | Seat belt retractor with torsion bar |
| WO2000021802A1 (en) * | 1998-10-13 | 2000-04-20 | Breed Automotive Technology, Inc. | Seat belt retractor having a torsion bar |
| KR20040018619A (en) * | 2002-08-23 | 2004-03-04 | 김형균 | Torsion bar by seat belt retractor torsion bar manufacture method and such method |
| KR100465814B1 (en) * | 2002-06-20 | 2005-01-13 | 주식회사 코우 | Method of trimming bi-directional |
| WO2005063515A1 (en) * | 2003-12-20 | 2005-07-14 | Schaeffler Kg | Anti-roll stabiliser |
| KR100747268B1 (en) * | 2005-10-07 | 2007-08-07 | 기아자동차주식회사 | Cap tilting force adjusting apparatus for a truck |
| CN102862020A (en) * | 2011-07-07 | 2013-01-09 | 梦想科技股份有限公司 | Input shaft of steering device for car and manufacturing method thereof |
| DE102017220606A1 (en) * | 2017-11-17 | 2019-05-23 | Volkswagen Aktiengesellschaft | Steering column for a motor vehicle |
| EP3536417A1 (en) * | 2018-03-08 | 2019-09-11 | Steering Solutions IP Holding Corporation | Torsion bar and method of manufacturing |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140019956A (en) * | 2012-08-07 | 2014-02-18 | 한라비스테온공조 주식회사 | Method for manufacturing hollow shaft of compressor |
-
1990
- 1990-06-11 JP JP15329590A patent/JP2592171B2/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0648953A1 (en) * | 1993-10-19 | 1995-04-19 | Allevard | Improvements to metallic torsionbars |
| FR2711407A1 (en) * | 1993-10-19 | 1995-04-28 | Allevard Sa | Improvements to the metal torsion bars. |
| WO1999052746A1 (en) * | 1998-04-14 | 1999-10-21 | Breed Automotive Technology, Inc. | Seat belt retractor with torsion bar |
| WO2000021802A1 (en) * | 1998-10-13 | 2000-04-20 | Breed Automotive Technology, Inc. | Seat belt retractor having a torsion bar |
| KR100465814B1 (en) * | 2002-06-20 | 2005-01-13 | 주식회사 코우 | Method of trimming bi-directional |
| KR20040018619A (en) * | 2002-08-23 | 2004-03-04 | 김형균 | Torsion bar by seat belt retractor torsion bar manufacture method and such method |
| WO2005063515A1 (en) * | 2003-12-20 | 2005-07-14 | Schaeffler Kg | Anti-roll stabiliser |
| KR100747268B1 (en) * | 2005-10-07 | 2007-08-07 | 기아자동차주식회사 | Cap tilting force adjusting apparatus for a truck |
| CN102862020A (en) * | 2011-07-07 | 2013-01-09 | 梦想科技股份有限公司 | Input shaft of steering device for car and manufacturing method thereof |
| CN102862020B (en) * | 2011-07-07 | 2014-12-31 | 梦想科技股份有限公司 | Input shaft of steering device for car and manufacturing method thereof |
| DE102017220606A1 (en) * | 2017-11-17 | 2019-05-23 | Volkswagen Aktiengesellschaft | Steering column for a motor vehicle |
| EP3536417A1 (en) * | 2018-03-08 | 2019-09-11 | Steering Solutions IP Holding Corporation | Torsion bar and method of manufacturing |
| US11020827B2 (en) | 2018-03-08 | 2021-06-01 | Steering Solutions Ip Holding Corporation | Torsion bar active length control and method of manufacturing |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2592171B2 (en) | 1997-03-19 |
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