JPS6033091Y2 - Steering gear housing with cast-in pipe - Google Patents
Steering gear housing with cast-in pipeInfo
- Publication number
- JPS6033091Y2 JPS6033091Y2 JP1979090506U JP9050679U JPS6033091Y2 JP S6033091 Y2 JPS6033091 Y2 JP S6033091Y2 JP 1979090506 U JP1979090506 U JP 1979090506U JP 9050679 U JP9050679 U JP 9050679U JP S6033091 Y2 JPS6033091 Y2 JP S6033091Y2
- Authority
- JP
- Japan
- Prior art keywords
- steering gear
- gear housing
- cast
- pipe
- hollow hole
- 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.)
- Expired
Links
Description
【考案の詳細な説明】
本考案はラックバ−を挿通せしめるラックアンドピニオ
ン式ステアリングギアハウジングの構成に関するもので
あり、特に金型鋳造により形成されるステアリングギア
ハウジングのラックバ−を遊嵌せしめる中空穴を鉄製パ
イプを一体的に鋳込んで形成し鋳造工程における駄肉の
排除と、機械加工工程の省略を目的としたものである。[Detailed Description of the Invention] The present invention relates to the structure of a rack-and-pinion type steering gear housing into which a rack bar is inserted, and in particular, the hollow hole in the steering gear housing formed by die casting into which the rack bar is loosely fitted. It is formed by integrally casting an iron pipe, and aims to eliminate waste in the casting process and omit the machining process.
第１図は従来の金型鋳造により形成されるラックアンド
ピニオン式ステアリングギアハウジングを示すものであ
り、一端にラックバ−に噛合するピニオン軸を軸承する
軸受部１が形成され、他端にラックバ−に突設されたピ
ストンを嵌挿せしめるシリンダチューブ２が形成され、
このシリンダチューブ２と軸承部１を連結する連結筒部
３の中空穴３ａは抜き中子である金属中子４によってテ
ーパ状の鋳抜き穴に形成されている。Fig. 1 shows a rack and pinion type steering gear housing formed by conventional die casting, in which a bearing part 1 for supporting a pinion shaft that meshes with a rack bar is formed at one end, and a rack bar is mounted at the other end. A cylinder tube 2 is formed into which a piston protruding from the cylinder is fitted,
The hollow hole 3a of the connecting cylinder part 3 connecting the cylinder tube 2 and the shaft bearing part 1 is formed into a tapered cast hole by a metal core 4 which is a punched core.
かかる連結筒部３の製品段階の円穴３ｂはラックバ−の
遊嵌するばか穴で良いにもかかわらず、金属中子４の抜
は勾配に基づきテーパ穴が形成され駄肉が付いているた
め機械加工を余儀なくされ、これに挿通されるラックバ
−よりも大きな内径に中ぐり加工されていた。Although the circular hole 3b of the connecting cylinder part 3 in the product stage may be a blank hole into which the rack bar is loosely fitted, when the metal core 4 is removed, a tapered hole is formed based on the slope and there is waste. It had to be machined, and the inner diameter was bored out to be larger than the rack bar that was inserted through it.
このため加工工数の増加を招き、鋳物材料の無駄が多か
った。This resulted in an increase in the number of machining steps and a large amount of wasted casting material.
しかも両端から金型内に挿入する各金属中子４，５はそ
のほぼ中央部で互に対接する長さを必要とし、金型内挿
入長さが長くなることにより中央部における駄肉量が増
大するばかりでなく、鋳造後の中子の抜取りを困難にし
ていた。Moreover, the metal cores 4 and 5 that are inserted into the mold from both ends must have a length such that they face each other at approximately the center, and as the length of insertion into the mold becomes longer, the amount of wasted material in the center is reduced. This not only increases the size of the core, but also makes it difficult to remove the core after casting.
本考案はかかる従来の欠点をなくするために、連結筒部
の円穴を鉄製パイプを鋳込んで形成し、鋳造工程におけ
る駄肉をなくして機械加工をしなくても良いようにした
もめである。In order to eliminate such drawbacks of the conventional method, the present invention was developed by forming a circular hole in the connecting cylinder by casting an iron pipe into it, thereby eliminating the need for machining by eliminating waste material in the casting process. be.
以下本考案の実施例を第２図に基づいて説明する。An embodiment of the present invention will be described below based on FIG. 2.
ステアリングギアハウジング１０の外形形状は外型であ
る金型によって形成され、ピニオン軸の軸承部１１及び
シリンダチューブ１２の各中空部１１ａ、１２ａは金属
中子１３．１４によって形成される。The outer shape of the steering gear housing 10 is formed by a metal mold, and the bearing part 11 of the pinion shaft and the hollow parts 11a and 12a of the cylinder tube 12 are formed by metal cores 13.14.
又軸承部１１とシリンダチューブ１２の間の連結筒部１
５の円穴１５ａは、ラックバ−より大きい内径の鉄製パ
イプ１６を鋳込むことにより形成される。Also, the connecting cylinder part 1 between the shaft bearing part 11 and the cylinder tube 12
The circular hole 15a of No. 5 is formed by casting an iron pipe 16 having an inner diameter larger than that of the rack bar.
この鉄製パイプ１６の両端は注湯前の段階において前記
金属中子１３．１４の先端部にて外型にて形成される中
空室と同心状態に保持され、かつ金属中子１３．１４の
先端部のテーパ部にて両端開口部は閉塞され、かつ両金
属中千１３．１４によって軸方向位置決めがなされてい
る。Both ends of this iron pipe 16 are held concentrically with the hollow chamber formed by the outer mold at the tip of the metal core 13.14 before pouring, and the tip of the metal core 13.14 The openings at both ends are closed by the tapered portions, and the axial positioning is performed by both metal cores 13 and 14.
このように中子と鉄製パイプの組込まれたＭ型内にアル
ミ合金等の金属材料を溶解した湯を注湯し、凝固した後
外型を分離させ、金属中子１３゜１４を抜き取れば、連
結筒部１５に鉄製パイプ１６の鋳込まれたステアリング
ギアハウジング１０が形成される。In this way, hot water containing a metal material such as aluminum alloy is poured into the M-shaped mold in which the core and iron pipe are assembled, and after it solidifies, the outer mold is separated and the metal cores 13 and 14 are extracted. A steering gear housing 10 having an iron pipe 16 cast therein is formed in a connecting cylinder portion 15 .
このようにして鉄製パイプ１６を鋳込むことにより、連
結筒部１５の中空穴１５ａは鋳造工程の段階で製品段階
における内径寸法にすることができるので、駄肉を除去
する機械加工の手間も要しないし、材料も無駄もなく経
済的である。By casting the iron pipe 16 in this way, the hollow hole 15a of the connecting cylinder part 15 can have the inner diameter dimension at the product stage during the casting process, so there is no need for machining to remove waste material. It is economical and there is no waste of materials.
又、アルミ合金鋳物に対し連結筒部１５の中空穴１５ａ
に鉄製パイプ１６が鋳込まれているので、この部分の剛
性が高められ、ステアリングギアハウジングの曲げ剛性
を高めることができる等の効果を有する。Moreover, the hollow hole 15a of the connecting cylinder part 15 is used for aluminum alloy casting.
Since the iron pipe 16 is cast into the housing, the rigidity of this part is increased, which has the effect of increasing the bending rigidity of the steering gear housing.
尚図中の２点鎖線は製品段階における穴径を示すもので
、軸承部１１及びシリンダチューブ１２においては当然
の事ながら機械加工が行われる。Note that the two-dot chain line in the figure indicates the hole diameter at the product stage, and as a matter of course, machining is performed on the shaft bearing portion 11 and the cylinder tube 12.
第１図は従来のステアリングギアハウジングの断面形状
とともに鋳造時における金属中子の配置状態を併記した
図、第２図は本考案の実施例であるステアリングギアハ
ウジングの断面形状に鋳造時の金属中子の配置状態を併
記した図である。
１０・・・・・・ステアリングギアハウジング、１１・
・・・・・軸承部、１２・・・・・・シリンダチューブ
、１３，１４・・・・・・金属中子、１５・・・・・・
連結筒部、１５ａ・・・・・・中空穴、１６・・・・・
・鉄製パイプ。Fig. 1 shows the cross-sectional shape of a conventional steering gear housing and the arrangement of the metal core during casting. It is a diagram also showing the arrangement state of children. 10... Steering gear housing, 11.
...Shaft bearing part, 12...Cylinder tube, 13, 14...Metal core, 15...
Connecting cylinder part, 15a...Hollow hole, 16...
・Iron pipe.
Claims (1)
部を、他端にラックバ−に設けられたピストンを嵌挿せ
るシリンダチューブを、中間に前記軸承部とシリンダチ
ューブを連結しラックバ−により大きな内径の中空穴を
有する連結筒部をアルミニウムで一体鋳造してなるラッ
クアンドピニオン式ステアリングギアハウジングにおい
て、前記連結筒部の内周に前記中空穴を形成する中子の
各端部に嵌合する内径の鉄製パイプを一体的に鋳込んで
前記中空穴を形成した事を特徴とする鋳込みパイプを有
するステアリングギアハウジング。One end has a shaft bearing that supports a pinion shaft that meshes with the rack bar, and the other end has a cylinder tube into which a piston provided on the rack bar can be inserted. In a rack-and-pinion type steering gear housing formed by integrally casting a connecting cylindrical portion with a hollow hole from aluminum, the inner circumference of the connecting cylindrical portion has an inner diameter that fits into each end of a core forming the hollow hole. A steering gear housing having a cast-in pipe, characterized in that the hollow hole is formed by integrally casting an iron pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979090506U JPS6033091Y2 (en) | 1979-06-29 | 1979-06-29 | Steering gear housing with cast-in pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979090506U JPS6033091Y2 (en) | 1979-06-29 | 1979-06-29 | Steering gear housing with cast-in pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS568580U JPS568580U (en) | 1981-01-24 |
| JPS6033091Y2 true JPS6033091Y2 (en) | 1985-10-02 |
Family
ID=29323619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1979090506U Expired JPS6033091Y2 (en) | 1979-06-29 | 1979-06-29 | Steering gear housing with cast-in pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6033091Y2 (en) |
-
1979
- 1979-06-29 JP JP1979090506U patent/JPS6033091Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS568580U (en) | 1981-01-24 |
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