JPH0263670A - Manufacture of gear housing of rack pinion type steering device - Google Patents
Manufacture of gear housing of rack pinion type steering deviceInfo
- Publication number
- JPH0263670A JPH0263670A JP21249688A JP21249688A JPH0263670A JP H0263670 A JPH0263670 A JP H0263670A JP 21249688 A JP21249688 A JP 21249688A JP 21249688 A JP21249688 A JP 21249688A JP H0263670 A JPH0263670 A JP H0263670A
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical body
- housing
- cap
- hole
- gear housing
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000005266 casting Methods 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 12
- 238000004080 punching Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 6
- 238000007654 immersion Methods 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ハウジング本体内に、筒状体端を連結して挿
通可能に鋳造するのに、効率的で安価にでき、しかも高
精度にできるラックピニオン型操向装置のギヤハウジン
グ製造法に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides an efficient, inexpensive, and highly accurate method for casting the ends of a cylindrical body so that they can be inserted into a housing body by connecting them. This invention relates to a method for manufacturing a gear housing for a rack and pinion type steering device.
従来より、出願人は、ラックピニオン型操向装置のギヤ
ハウジング製造法の研究、開発を盛んに行なっている。The applicant has been actively researching and developing methods for manufacturing gear housings for rack and pinion type steering devices.
この種のギヤハウジングは、比較的長いランク軸を挿通
させる筒状体と、車両の方向制御装置の一部をなすラッ
クとピニオンとの噛み合い部分を包む比較的複雑な形状
を呈する部分とを含むため、筒状体の端部を鋳ぐるみし
て筒状部分と複雑な形状の部分とを各々形成する製造法
が、装置の小型軽量化と、製造コストの低減化の点で有
利であることから採用されている。すると、その成形時
において、特に、筒状体内にダイキャスト溶湯が浸入す
ることから、その筒状体の先端にキャップを嵌合して、
浸入防止を図っていた。This type of gear housing includes a cylindrical body through which a relatively long rank shaft is inserted, and a relatively complex-shaped part that encloses the engaging part of the rack and pinion that forms part of the vehicle's direction control device. Therefore, a manufacturing method in which the end of a cylindrical body is cast into a cylindrical part and a part with a complicated shape is advantageous in terms of making the device smaller and lighter and reducing manufacturing costs. It has been adopted from. Then, during molding, the die-cast molten metal infiltrates into the cylindrical body, so a cap is fitted to the tip of the cylindrical body.
Efforts were being made to prevent infiltration.
これでは、確かに、成形時には優れた効果を発揮するが
、その成形後に、その筒状体内部とハウジング本体とは
挿通可能となっていることが条件であるため、これを挿
通可能とさせるため、再び、そのキャップに深穴ドリル
加工等をしているのが現状であった。This certainly produces an excellent effect during molding, but the condition is that the inside of the cylindrical body and the housing body can be inserted after molding. The current situation is that the cap is once again drilled with a deep hole.
ところで、このような深穴ドリル加工は、加工の手間が
かかると共に、そのキャップは、ハウジング本体の内部
に存在するため、外側からでは、センター位置が僅かで
はあるがずれることも多く、正確な位置に加工しにくい
課題があった。By the way, such deep hole drilling takes time and effort, and since the cap is located inside the housing body, the center position often shifts slightly when viewed from the outside, making it difficult to accurately locate the cap. There were issues that were difficult to process.
そこで発明者は、上記課題を解決すべく、鋭意。 Therefore, the inventor worked diligently to solve the above problem.
研究を重ねた結果、その発明を、ハウジング本体内に筒
状体端を連結して挿通可能に鋳造する際に、筒状体端に
嵌合した。溶湯の浸入防止のキャップに、前記筒状体と
同一軸心したパンチ用引抜き中子の先端にて、筒状体内
径と略等しい貫孔を穿孔し、その後、パンチ用引抜き中
子を固定状態にしつつ、ハウジング本体内に筒状体端を
鋳ぐるみしたラックピニオン型操向装置のギヤハウジン
グ製造法等としたことにより、効率的で安価に製造でき
、且つキャンプの正確なセンター位置を穿設することが
でき、前記課題を解決したものである。As a result of repeated research, the invention was fitted to the end of the cylindrical body when the end of the cylindrical body was connected and inserted into the housing main body and cast. A through hole approximately equal to the diameter of the cylindrical body is drilled in the cap to prevent the intrusion of molten metal at the tip of a drawing core for punch that is coaxial with the cylindrical body, and then the drawing core for punch is fixed. However, by using a gear housing manufacturing method for a rack and pinion type steering device in which the end of the cylindrical body is cast inside the housing body, it can be manufactured efficiently and at low cost, and the accurate center position of the camp can be drilled. This solves the above problem.
以下、本発明の製造法を第１図乃至第１０図に基づいて
説明する。まず、その構成部材及び鋳造金型の構成につ
いて述べると、Ａはアルミ合金グイキャスト製のハウジ
ング本体であって、第１０図に示すように、ランクＲ，
ピニオンＰの噛み合い部分が収納可能に構成されている
。■は筒状体で、前記ラックＲを形成した軸を挿通させ
るように比較的長さが長く形成されている。そのハウジ
ング本体Ａ内部に、筒状体１の端がインサートされて一
体的に鋳くるみされている。Hereinafter, the manufacturing method of the present invention will be explained based on FIGS. 1 to 10. First, to describe the configuration of its constituent members and casting mold, A is a housing body made of aluminum alloy Guicast, and as shown in FIG.
The meshing portion of the pinion P is configured to be retractable. 2 is a cylindrical body, which is formed to be relatively long so that the shaft forming the rack R can be inserted therethrough. Inside the housing body A, the end of the cylindrical body 1 is inserted and integrally wrapped.
そのハウジング本体Ａ及び筒状体１の具体的な構成とし
ては、第７図に示すように、ハウジング本体Ａ内に鋳ぐ
るみした筒状体１の端にはキャップ２が嵌合され、その
筒状体１の軸心ｇ１と、ハウジング本体Ａ内の主鋳抜き
孔３の軸心ｇ３とが同一軸心となるように形成されてい
る。その筒状体１及び主鋳抜き孔３内にラックＲを有し
た軸が挿通可能に構成されている。４，５は副鋳抜き孔
で、第５図、第７図、第８図、第１０図に示すように、
前記主鋳抜き孔３の軸心ｇ３に直交又は略直交する方向
を向いて形成され、その副鋳抜き孔４内にピニオンＰ及
び該軸が収納可能に構成され、その副鋳抜き孔５には、
そのピニオンＰにラックＲが常時良好に噛合するように
、ラックＲの背面側を押圧するラックガイドスクリュー
Ｓが収納螺合されるように設けられている。筒状体１の
先端のキャップ２は、その中央位置に貫孔２ａが穿設さ
れて、これによって、ハウジング本体Ａと筒状体１とが
連結して挿通可能に形成されている（第６図参照）。The specific structure of the housing body A and the cylindrical body 1 is as shown in FIG. The axial center g1 of the shaped body 1 and the axial center g3 of the main cast hole 3 in the housing body A are formed to be coaxial. A shaft having a rack R is configured to be inserted into the cylindrical body 1 and the main cast hole 3. 4 and 5 are sub-casting holes, as shown in Fig. 5, Fig. 7, Fig. 8, and Fig. 10.
The main casting hole 3 is formed in a direction perpendicular or substantially perpendicular to the axis g3 of the main casting hole 3, and is configured such that the pinion P and the shaft can be stored in the sub-casting hole 4. teeth,
A rack guide screw S that presses the rear side of the rack R is provided so as to be housed and screwed together so that the rack R always meshes well with the pinion P. The cap 2 at the tip of the cylindrical body 1 is provided with a through hole 2a at its center, so that the housing body A and the cylindrical body 1 are connected and can be inserted through the cap 2 (6th (see figure).
Ｂは金型であって、下型６と上型７とで構成され、ハウ
ジング本体ＡがキャビティＣ内にて鋳造されるように構
成されている。その下型６と上型７との主要部にて、ハ
ウジング本体Ａの外形を成形する適宜の形状の凹状のキ
ャビティＣが形成され、その周囲にヘースが固着されて
いる。その下型６又は上型７の端に設けたホルダ一部８
に、前記筒状体１の一端を嵌合可能に形成されている（
第１図参照）。A mold B is composed of a lower mold 6 and an upper mold 7, and is configured such that the housing main body A is cast within the cavity C. A concave cavity C having an appropriate shape for molding the outer shape of the housing body A is formed in the main parts of the lower mold 6 and the upper mold 7, and a heath is fixed around the cavity C. Holder part 8 provided at the end of the lower mold 6 or upper mold 7
is formed so that one end of the cylindrical body 1 can be fitted therein (
(See Figure 1).
９は、前記ハウジング本体Ａの主鋳抜き孔３を形成する
パンチ用引抜き中子で、油圧シリンダーにて進退するピ
ストンロッド１０端に固着され、第１図乃至第３図にお
いて左右動可能に構成されている。そのパンチ用引抜き
中子９の先端のパンチ部９ａは、前記筒状体１の内径に
略等しくなるように形成されている。また、そのパンチ
部９ａは、第９図に示すように、その外周に刃部９ｂを
形成することもある。Reference numeral 9 denotes a drawing core for a punch forming the main casting hole 3 of the housing body A, which is fixed to the end of a piston rod 10 that moves forward and backward with a hydraulic cylinder, and is configured to be movable left and right in FIGS. 1 to 3. has been done. A punch portion 9a at the tip of the punch drawing core 9 is formed to be approximately equal to the inner diameter of the cylindrical body 1. Further, the punch portion 9a may have a blade portion 9b formed on its outer periphery, as shown in FIG.
その金型Ｂには、前記ピニオンＰ及び該軸周の副鋳抜き
孔４を形成する中子１１、前記ラックガイドスクリュー
Ｓ用の副鋳抜き孔５を形成する中子１２が各々設けられ
ている（第５図参照）。The mold B is provided with a core 11 that forms the pinion P and the auxiliary casting hole 4 around the shaft, and a core 12 that forms the auxiliary casting hole 5 for the rack guide screw S. (See Figure 5).
前記金型Ｂの下型６．上型７において、実施例では、下
型６を可動側にし、上型７を固定側にしたが、これに限
定されず、下型６を固定側にし、上型７を可動側にする
こともあり、さらに、その筒状体１を垂直状に取り付け
れば、金型Ｂは左右側になることもあり、実施例に限定
されない。Lower mold 6 of the mold B. In the upper mold 7, in the embodiment, the lower mold 6 is set to the movable side and the upper mold 7 is set to the fixed side, but the present invention is not limited to this, and the lower mold 6 may be set to the fixed side and the upper mold 7 is set to the movable side. Furthermore, if the cylindrical body 1 is mounted vertically, the mold B may be on the left and right sides, and is not limited to the embodiment.
次に、ハウジング本体Ａ及び筒状体１の製造法について
述べると、まず、第１図に示すように、筒状体１の一端
をホルダ一部８に嵌合し、その他端はキャビティＣ内に
位置させ、且つキャップ２を嵌合する。Next, the manufacturing method of the housing body A and the cylindrical body 1 will be described. First, as shown in FIG. and fit the cap 2.
そして、パンチ用引抜き中子９のパンチ部９ａの先端が
、キャップ２の円形端面に当接するように、第１図から
第２図に示すように、右方向に移動させて停止させる。Then, as shown in FIG. 1 to FIG. 2, the tip of the punch portion 9a of the punching core 9 is moved to the right and stopped so as to come into contact with the circular end surface of the cap 2.
そして、下型６と上型７とを、図示しない可動部にて合
致させ（第４図参照）同時に、その中子１１の中間切欠
き部１１ａを、また、中子１２の弧状先端をそれぞれ前
記パンチ用引抜き中子９の外周面に当接又は略当接させ
る（第５図参照）。Then, the lower mold 6 and the upper mold 7 are brought into alignment using a movable part (not shown) (see FIG. 4), and at the same time, the intermediate notch 11a of the core 11 and the arcuate tip of the core 12 are It is brought into contact or approximately brought into contact with the outer circumferential surface of the punch drawing core 9 (see FIG. 5).
また、下型６と上型７とを、図示しない可動部にて閉じ
させた後に、第２図に示すように、パンチ用引抜き中子
９のパンチ部９ａの先端を、キャップ２の円形端面に当
接又は略当接させることもある。After the lower die 6 and the upper die 7 are closed by a movable part (not shown), as shown in FIG. It may be brought into contact with or substantially in contact with.
何れの順序としても、その筒状体１のキャップ２例の外
周を下型６と上型７との一部にて包持する。In either order, the outer periphery of the two caps of the cylindrical body 1 is partially enclosed by the lower mold 6 and the upper mold 7.
そして、第３図において、油圧シリンダーを駆動させて
、ピストンロッド１０を介してパンチ用引抜き中子９を
右移動させて、該パンチ用引抜き中子９のパンチ部９ａ
の先端にて、キャップ２の中央位置を穿孔して貫孔２ａ
を形成する。すると、該貫孔２ａを形成したキャンプ２
のパンチ残片２ｂが筒状体１内に放擲される（第３図、
第６図。3, the hydraulic cylinder is driven to move the punch drawing core 9 to the right via the piston rod 10, and the punch portion 9a of the punch drawing core 9 is moved to the right.
At the tip of the cap 2, make a hole in the center of the cap 2 to form a through hole 2a.
form. Then, the camp 2 that formed the through hole 2a
The punch residue 2b is thrown into the cylindrical body 1 (Fig. 3,
Figure 6.
第９図参照）。そのパンチ成形時には、パンチ部９ａの
軸心ｇ、と筒状体１の軸心ｇ、とが同一軸上に存在する
よう形成する（第６図参照）。(See Figure 9). At the time of punch forming, the axial center g of the punch portion 9a and the axial center g of the cylindrical body 1 are formed on the same axis (see FIG. 6).
そして、アルミ合金ダイキャスト溶湯をキャビティＣ内
に供給し７て、主鋳抜き孔３．副鋳抜き孔４．５を形成
したハウジング本体Ａと鋳くるみした筒状体１を鋳型成
形する（第３図参照）。Then, the aluminum alloy die-cast molten metal is supplied into the cavity C, and the main casting hole 3. The housing main body A in which the sub-cast holes 4.5 are formed and the cylindrical body 1 which is covered with a mold are molded (see FIG. 3).
その後、前記パンチ残片２ｂを筒状体１から取り除いて
ラックピニオン用のハウジングを完成させる。Thereafter, the punch residue 2b is removed from the cylindrical body 1 to complete the housing for the rack and pinion.
また、図示しないが、そのキャップ２への貫孔２ａ穿孔
を、金型Ｂが閉じると同時に、公知技術にての傾斜ピン
を応用して行うこともある。Further, although not shown, the through-hole 2a in the cap 2 may be bored at the same time as the mold B is closed by applying a known technique using an inclined pin.
図中１３は冷却部で、前記パンチ用引抜き中子９、中子
１１．１２内部に冷却水等が循環可能に設けられている
。In the figure, reference numeral 13 denotes a cooling section, which is provided so that cooling water and the like can be circulated inside the punch drawing core 9 and cores 11 and 12.
請求項１の発明においては、ハウジング本体Ａ内に筒状
体１端を連結して挿通可能に鋳造する際に、筒状体１端
に嵌合した。溶湯の浸入防止のキャップ２に、前記筒状
体１と同一軸心したパンチ用引抜き中子９の先端にて、
筒状体１内径と略等しい貫孔２ａを穿孔し、その後、パ
ンチ用引抜き中子９を固定状態にしつつ、ハウジング本
体Ａ内に筒状体１端を鋳ぐるみしたラックピニオン型操
向装置のギヤハウジング製造方法としたことにより、第
１に極めて簡易且つ迅速にラックピニオン型操向装置の
ギヤハウジングを製造することができ、ひいては安価に
でき、第２に正確な位置に穿孔することができ、第３に
筒状体１内への溶湯の浸入は確実に遮断できる等の効果
を奏する。In the invention of claim 1, when the one end of the cylindrical body is connected and inserted into the housing main body A and cast, it is fitted into the first end of the cylindrical body. At the tip of the drawing core 9 for punching, which is coaxial with the cylindrical body 1, the cap 2 for preventing the intrusion of molten metal is placed.
In this rack and pinion type steering device, a through hole 2a is bored which is approximately equal to the inner diameter of the cylindrical body 1, and then the cylindrical body 1 end is cast inside the housing body A while the punch drawing core 9 is fixed. By adopting the gear housing manufacturing method, firstly, the gear housing of the rack and pinion type steering device can be manufactured extremely simply and quickly, which can be done at a low cost, and secondly, the holes can be drilled at accurate positions. Thirdly, the intrusion of molten metal into the cylindrical body 1 can be reliably blocked.
これらの効果について詳述すると、まず、請求項１の発
明では、ハウジング本体Ａ内に筒状体１端を連結して挿
通可能に鋳造する際に、筒状体１端に嵌合した。溶湯の
浸入防止のキャップ２に、前記筒状体１と同一軸心した
パンチ用引抜き中子９の先端にて、筒状体１内径と略等
しい貫孔２ａを穿孔したので、鋳造時に、キャップ２の
貫孔２ａ穿孔ができ、極めて簡易且つ迅速に、ラックピ
ニオン型操向装置のギヤハウジングを製造できる。To explain these effects in detail, first, in the invention of claim 1, when the one end of the cylindrical body is connected and inserted into the housing main body A and is cast, it fits into the first end of the cylindrical body. A through hole 2a, which is approximately equal to the inner diameter of the cylindrical body 1, is bored in the cap 2 to prevent the intrusion of molten metal at the tip of a drawing core 9 for punching, which is coaxial with the cylindrical body 1. 2 through-holes 2a can be bored, and a gear housing for a rack and pinion type steering device can be manufactured extremely easily and quickly.
従って、従来のように筒状体へのキャップ嵌合で、鋳物
の途中に止めた筒状体内への溶湯の浸入防止を図ること
ができたが、ハウジング本体と筒状体とが挿通可能とす
ることを条件としているため、鋳造後に、そのキャップ
に貫孔を深穴ドリル加工して穿設していた重大な欠陥を
、本発明にて、確実に解消でき、ひいては安価にラック
ピニオン型操向装置のギヤハウジングを製造できる。Therefore, as in the past, it was possible to prevent molten metal from entering the cylindrical body stopped in the middle of the casting by fitting a cap to the cylindrical body, but it was not possible to insert the housing body and the cylindrical body. Therefore, with the present invention, it is possible to reliably eliminate the serious defect of drilling a through hole in the cap after casting. We can manufacture gear housings for industrial equipment.
また、従来では、鋳造後に、キャップに貫孔を深穴ドリ
ル加工して穿設しており、その貫孔の位置が僅かにずれ
ることもあったが、請求項１の発明のように、筒状体１
とパンチ用引抜き中子９とが同一軸心としたので、成形
時に筒状体１とパンチ用引抜き中子９の軸心が一致し、
パンチ用引抜き中子９の先端に、キャップ２の中心を簡
易且つ迅速に穿設でき、正確な位置に穿孔することがで
きる利点がある。Furthermore, in the past, a through hole was formed in the cap by deep drilling after casting, and the position of the through hole sometimes shifted slightly. Shape 1
Since the axes of the cylindrical body 1 and the punch drawing core 9 are aligned on the same axis, the axes of the cylindrical body 1 and the punch drawing core 9 are aligned during molding.
There is an advantage that the center of the cap 2 can be easily and quickly punched at the tip of the drawing core 9 for punching, and the punch can be punched at an accurate position.
また、請求項１の発明では、パンチ用引抜き中子９の先
端にて、筒状体１内径と略等しい貫孔２ａを穿孔し、そ
の後、該パンチ用引抜き中子９を固定状態にしつつ、ハ
ウジング本体Ａ内に筒状体１端を鋳ぐるみすることで、
パンチ用引抜き中子９の先端による穿孔にてこの状態を
保持して固定させたこととなり、該固定はパンチ用引抜
き中子９の先端で、筒状体１内径部に載台状態となり、
これらによって、ハウジング本体Ａの途中に止めた筒状
体１内への溶湯の浸入を確実に遮断でき、しかも筒状体
１を厚肉材にしなくとも遮断できる利点がある。Further, in the invention of claim 1, a through hole 2a that is approximately equal to the inner diameter of the cylindrical body 1 is bored at the tip of the drawing core 9 for punching, and then, while the drawing core 9 for punching is in a fixed state, By casting one end of the cylindrical body inside the housing body A,
This state is held and fixed by the hole made by the tip of the punch drawing core 9, and the fixation is such that the tip of the punch drawing core 9 is mounted on the inner diameter part of the cylindrical body 1, and
These have the advantage that the intrusion of molten metal into the cylindrical body 1 which is stopped in the middle of the housing body A can be reliably blocked, and the molten metal can be blocked without having to make the cylindrical body 1 a thick material.
次に、請求項２の発明においては、ハウジング本体Ａ内
に筒状体１端を連結して挿通可能に鋳造する際に、筒状
体１の一端をホルダ一部８にて支持し、他端側を金型Ｂ
にて包持し、この状態にて、キャップ２に貫孔２ａを穿
孔したことにより、特に、正確な位置に穿孔できる。即
ち、筒状体１の軸方向にパンチ力による座屈荷重が強力
に作用しても、そのホルダ一部８と金型Ｂとの両端支持
にて、筒状体１とパンチ用引抜き中子９との同一軸心状
態を保持でき、これによって、キャップ２の正確な位置
に貫孔２ａを穿孔できる効果がある。Next, in the invention of claim 2, when the one end of the cylindrical body is connected and inserted into the housing body A, one end of the cylindrical body 1 is supported by the holder part 8, and the other end is supported by the holder part 8. Mold B on the end side
By holding the cap 2 in place and drilling the through hole 2a in the cap 2 in this state, the hole 2a can be punched at an especially accurate position. That is, even if a strong buckling load due to punching force acts on the cylindrical body 1 in the axial direction, the cylindrical body 1 and the punch drawing core are supported by the holder portion 8 and the mold B at both ends. It is possible to maintain the coaxial state with the cap 9, which has the effect of making it possible to drill the through hole 2a at an accurate position in the cap 2.
他の構成は請求項１の発明は同一であり、これと同等の
効果を発揮しうる。The other configurations are the same as the invention of claim 1, and the same effects can be achieved.
図面は本発明の実施例を示すものであって、その第１図
乃至第３図は本発明の製造法の工程を示す断面図、第４
図は第３図ＴＶ−ＩＶ矢視断面図、第５図は要部断面図
、第６図は本発明の要部の穿孔状態を示す断面図、第７
図は本発明の鋳造完了の状態図、第８図はギヤハウジン
グの斜視図、第９図は本発明の要部の別の実施例の穿孔
状態を示す断面図、第１０図はギヤハウジングの使用例
の断面図である。
Ａ・・・・・・ハウジング本体、１・・・・・・筒状体
、２・・・・・・キャップ、 ２ａ・・・・・・貫
孔、Ｂ・・・・・・金型、 ８・・・・・・ホ
ルダ一部、９・・・・・・パンチ用引抜き中子。The drawings show embodiments of the present invention, and FIGS. 1 to 3 are cross-sectional views showing the steps of the manufacturing method of the present invention, and FIG.
The figures are a sectional view taken along arrows TV-IV in FIG. 3, FIG. 5 is a sectional view of the main part, FIG.
8 is a perspective view of the gear housing, FIG. 9 is a sectional view showing the drilling state of another embodiment of the main part of the present invention, and FIG. 10 is a diagram of the gear housing. It is a sectional view of an example of use. A: Housing body, 1: Cylindrical body, 2: Cap, 2a: Through hole, B: Mold, 8...Part of the holder, 9...Drawing core for punch.
Claims (2)
に鋳造する際に、筒状体端に嵌合した、溶湯の浸入防止
のキャップに、前記筒状体と同一軸心したパンチ用引抜
き中子の先端にて、筒状体内径と略等しい貫孔を穿孔し
、その後、パンチ用引抜き中子を固定状態にしつつ、ハ
ウジング本体内に筒状体端を鋳ぐるみしたことを特徴と
したラックピニオン型操向装置のギヤハウジング製造法
。(1) When casting the end of the cylindrical body so that it can be inserted into the housing body, a punch that is coaxial with the cylindrical body is attached to the cap that is fitted to the end of the cylindrical body and prevents molten metal from entering. A through hole approximately equal to the diameter of the cylindrical body is bored at the tip of the punching core, and the end of the cylindrical body is then cast inside the housing body while the punching core is fixed. A method for manufacturing a gear housing for a rack and pinion type steering device.
に鋳造する際に、筒状体の一端をホルダーにて支持し、
他端側を金型にて包持し、筒状体の他端に予め嵌合した
、溶湯の浸入防止のキャップに、前記筒状体と同一軸心
したパンチ用引抜き中子の先端にて、筒状体内径と略等
しい貫孔を穿孔し、その後、パンチ用引抜き中子を固定
状態にしつつ、ハウジング本体内に筒状体端を鋳ぐるみ
したことを特徴としたラックピニオン型操向装置のギヤ
ハウジング製造法。(2) When casting the end of the cylindrical body so that it can be inserted into the housing body by connecting it, one end of the cylindrical body is supported by a holder,
The other end of the cylindrical body is held by a mold, and the tip of the punching core, which is coaxial with the cylindrical body, is attached to a cap that prevents molten metal from entering, which is fitted onto the other end of the cylindrical body in advance. , a rack and pinion type steering device characterized in that a through hole is bored that is approximately equal to the diameter of the cylindrical body, and then the end of the cylindrical body is cast inside the housing body while the punching core is fixed. gear housing manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21249688A JPH0729196B2 (en) | 1988-08-29 | 1988-08-29 | Rack and pinion type steering gear manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21249688A JPH0729196B2 (en) | 1988-08-29 | 1988-08-29 | Rack and pinion type steering gear manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0263670A true JPH0263670A (en) | 1990-03-02 |
| JPH0729196B2 JPH0729196B2 (en) | 1995-04-05 |
Family
ID=16623624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21249688A Expired - Lifetime JPH0729196B2 (en) | 1988-08-29 | 1988-08-29 | Rack and pinion type steering gear manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0729196B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5957190A (en) * | 1996-09-04 | 1999-09-28 | Toyota Jidosha Kabushiki Kaisha | Method of integrally attaching hollow member to cast product by casting and apparatus therefor |
-
1988
- 1988-08-29 JP JP21249688A patent/JPH0729196B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5957190A (en) * | 1996-09-04 | 1999-09-28 | Toyota Jidosha Kabushiki Kaisha | Method of integrally attaching hollow member to cast product by casting and apparatus therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0729196B2 (en) | 1995-04-05 |
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