JPH0729196B2 - Rack and pinion type steering gear manufacturing method - Google Patents
Rack and pinion type steering gear manufacturing methodInfo
- Publication number
- JPH0729196B2 JPH0729196B2 JP21249688A JP21249688A JPH0729196B2 JP H0729196 B2 JPH0729196 B2 JP H0729196B2 JP 21249688 A JP21249688 A JP 21249688A JP 21249688 A JP21249688 A JP 21249688A JP H0729196 B2 JPH0729196 B2 JP H0729196B2
- Authority
- JP
- Japan
- Prior art keywords
- tubular body
- punching
- housing
- rack
- core
- 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 - Lifetime
Links
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 [Industrial Field of Application] The present invention is efficient, inexpensive, and highly accurate in casting a housing body by connecting the ends of a tubular body so that the tubular body can be inserted therethrough. To a gear housing for a rack-and-pinion steering device that can be used.
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。
この種のギヤハウジングは、比較的長いラック軸を挿通
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。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。Conventionally, the applicant has been actively researching and developing a gear housing manufacturing method for a rack and pinion type steering device.
This type of gear housing includes a tubular body that allows a relatively long rack shaft to be inserted therethrough, and a portion having a relatively complicated shape that encloses a meshing portion of a rack and a pinion that forms a part of a vehicle direction control device. Therefore, a manufacturing method in which the end portion of the tubular body is cast to form the tubular portion and the complex-shaped portion, respectively, is advantageous in terms of reducing the size and weight of the device and reducing the manufacturing cost. Has been adopted from. Then, at the time of the molding, in particular, since the die-cast molten metal enters the tubular body, a cap is fitted to the tip of the tubular body,
It was trying to prevent intrusion. This certainly has an excellent effect at the time of molding, but since the inside of the tubular body and the housing body can be inserted after the molding, it is necessary to make it insertable. Again, it was the current situation that the cap was deep hole drilled.
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 a deep hole drilling process takes time and labor, and since the cap exists inside the housing body, the center position often shifts slightly from the outside, so that the exact position is accurate. There was a problem that was difficult to process.
そこで発明者は、上記課題を解決すべく、鋭意，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
キャップの正確なセンターの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。Then, as a result of earnestly researching in order to solve the above-mentioned subject, the inventor fits the invention to the end of the tubular body when the end of the tubular body is connected to the housing body and is castable. At the tip of the punching core that is coaxial with the cylindrical body, the through-hole that is approximately the same as the inner diameter of the cylindrical body is punched in the combined cap for preventing the intrusion of molten metal, and then the punching core for punching is performed. The gear housing manufacturing method of the rack and pinion type steering device in which the end of the tubular body is cast into the housing body while keeping the fixed state is adopted, so that it can be manufactured efficiently and inexpensively, and the accurate center of the cap The position can be drilled, and the above problems are solved.
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はアルミ合金ダイキャスト製のハウジン
グ本体であって、第10図に示すヨウニ、ラック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。１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
鋳ぐるみされている。The manufacturing method of the present invention will be described below with reference to FIGS. 1 to 10. First, the constitutional members and the constitution of the casting die will be described. A is a housing body made of an aluminum alloy die-cast, and is configured so that the meshing portions of the urine, the rack R and the pinion P shown in FIG. 10 can be stored. ing. Reference numeral 1 denotes a tubular body having a relatively long length so that the shaft on which the rack R is formed can be inserted. Inside the housing main body A, the end of the tubular body 1 is inserted and integrally cast.
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）。As shown in FIG. 7, a specific configuration of the housing body A and the tubular body 1 is such that a cap 2 is fitted to the end of the tubular body 1 that is cast into the housing body A, and the axis g 1 of shaped body 1, and the axis g 3 main cast hole 3 in the housing body a is formed to have the same axis.
A shaft having a rack R can be inserted into the cylindrical body 1 and the main casting hole 3. Denoted by 4 and 5 are sub-casting holes, which, as shown in FIGS. 5, 7, 8, and 10, face a direction orthogonal or substantially orthogonal to the axis g 3 of the main casting hole 3. Is formed so that the pinion P and the shaft can be housed in the sub casting hole 4, and the rack R is fitted in the sub casting hole 5 so that the rack R always meshes well with the pinion P.
A rack guide screw S that presses the back side of the is installed so as to be housed and screwed. The cap 2 at the tip of the tubular body 1 is formed with a through hole 2a at its central position so that the housing body A and the tubular body 1 can be connected and inserted (sixth). 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、その周囲にベースが固着されて
いる。その下型６又は上型７の端に設けたホルダー部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）。B is a mold, which is composed of a lower mold 6 and an upper mold 7, and is configured such that the housing body A is cast in 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 part of the lower mold 6 and the upper mold 7, and the base is fixed to the periphery thereof. Holder part 8 provided at the end of the lower mold 6 or the upper mold 7.
In addition, one end of the tubular body 1 is formed so that it can be fitted (see FIG. 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 punching extraction core for forming the main casting hole 3 of the housing body A, which is fixed to the end of the piston rod 10 which moves forward and backward by a hydraulic cylinder, and is configured to be movable left and right in FIGS. 1 to 3. Has been done. The punch portion 9a at the tip of the punch extraction core 9 is formed to have a diameter substantially equal to the inner diameter of the tubular body 1. Also, the punch section 9a
As shown in FIG. 9, a blade portion 9b may be formed on the outer periphery of the blade.
その金型Ｂには、前記ピニオンＰ及び該軸用の副鋳抜き
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 die B has a core 11 for forming the pinion P and a sub-casting hole 4 for the shaft, and the rack guide screw S.
Each of the cores 12 is formed to form a sub-casting hole 5 (see FIG. 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を固定側には、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。In the lower mold 6 and the upper mold 7 of the mold B, the lower mold 6 is the movable side and the upper mold 7 is the fixed side in the embodiment, but the invention is not limited to this, and the lower mold 6 is fixed side. The upper die 7 may be on the movable side, and if the tubular body 1 is attached vertically, the die B may be on the left and right sides, which 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
をホルダー部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, a method of manufacturing the housing body A and the tubular body 1 will be described. First, as shown in FIG. 1, one end of the tubular body 1 is fitted in the holder portion 8 and the other end is placed in the cavity C. Position 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。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 tip of the punch portion 9a of the punching core 9 is
As shown in FIGS. 1 and 2, the cap 2 is moved to the right and stopped so as to come into contact with the circular end surface of the cap 2. Then, the lower die 6 and the upper die 7 are matched at a movable part (not shown) (see FIG. 4), and at the same time, the intermediate cutout portion 11a of the core 11 and the arcuate tip of the core 12 are fixed. The punching core 9 is brought into contact with or substantially in contact with the outer peripheral surface of the 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。Further, after closing the lower die 6 and the upper die 7 by a movable part (not shown), as shown in FIG. 2, the tip of the punch part 9a of the punching-out core 9 is attached to the circular end surface of the cap 2. There is also a case of contacting or substantially contacting with.
何れの順序としても、その筒状体１のキャップ２側の外
周を下型６と上型７との一部にて包持する。In any order, the outer periphery of the tubular body 1 on the side of the cap 2 is wrapped by a part of the lower die 6 and the upper die 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を形成したキャップ２のパン
チ残片2bが筒状体１内に方擲される（第３図，第６図，
第９図参照）。そのパンチ成形時には、パンチ部9aの軸
心g9と筒状体１の軸心g1とが同一軸上に存在するよう形
成する（第６図参照）。Then, in FIG. 3, the hydraulic cylinder is driven to move the punch extraction core 9 to the right through the piston rod 10, and at the tip of the punch portion 9a of the punch extraction core 9, the cap 2 A through hole 2a is formed by punching the central position of the. Then, the punch residual piece 2b of the cap 2 having the through hole 2a is thrust into the tubular body 1 (see FIGS. 3, 6 and
(See FIG. 9). Its During punch molding, formed to have a central axis g 1 the axis g 9 and the tubular body 1 of the punching unit 9a are present 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と鋳ぐるみした筒状体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 to mold the housing body A having the main casting holes 3 and the sub-casting holes 4 and 5 and the cast-in tubular body 1 (third molding). See figure).
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。Then, the punch residual piece 2b is removed from the cylindrical body 1 to complete the rack and pinion housing.
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 may be bored in the cap 2 at the same time as the mold B is closed by applying an inclined pin according to a known technique.
図中13は冷却部で、前記パンチ用引抜き中子９、中子1
1,12内部に冷却水等が循環可能に設けられている。In the figure, 13 is a cooling unit, which is the punching core 9 and core 1 for punching.
Cooling water is circulated inside 1,12.
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と同一置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 end of the tubular body 1 is connected to the inside of the housing main body A and is cast so that it can be inserted, the cap 2 for preventing the intrusion of molten metal fitted to the end of the tubular body, At the tip of the punching extraction core 9 placed in the same position as the tubular body 1, a through hole 2a having a diameter substantially equal to the inner diameter of the tubular body 1 is bored, and then the punching extraction core 9 is fixed and the housing body A
By using the gear housing manufacturing method of the rack and pinion type steering device in which the end of the tubular body is cast into the inside, firstly, the gear housing of the rack and pinion type steering device can be manufactured very simply and quickly. As a result, it is possible to reduce the cost, secondly, it is possible to perforate at an accurate position, and thirdly, it is possible to surely block the intrusion of the molten metal into the tubular body 1, and the like.
これらの効果にいて詳述すると、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。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、ひてい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。These effects will be described in detail. First, in the invention of claim 1, when the end of the tubular body 1 is connected to the inside of the housing main body A and the insertable casting is performed, the tubular body 1 is fitted into the end of the tubular body 1. In the cap 2 for preventing the intrusion of the molten metal, a through hole 2a having a diameter substantially equal to the inner diameter of the cylindrical body 1 is formed at the tip of the punching extraction core 9 having the same axis as the cylindrical body 1. 2 through holes
2a can be drilled, and the gear housing of the rack and pinion type steering device can be manufactured very simply and quickly. Therefore, it is possible to prevent the invasion of the molten metal into the tubular body stopped in the middle of the casting by fitting the cap into the tubular body as in the conventional case, but it is possible to insert the housing body and the tubular body. Therefore, the present invention can surely eliminate a serious defect in which a through hole is formed by deep-hole drilling the cap after casting, and the rack and pinion can be inexpensively manufactured. A gear housing for a mold steering device can be manufactured.
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。Further, conventionally, after casting, a through hole is formed in the cap by deep hole drilling, and the position of the through hole may be slightly displaced. However, as in the invention of claim 1, Form 1
Since the punching core 9 and the punching core 9 have the same axial center, the cylindrical body 1 and the punching core 9 have the same axial center during molding.
There is an advantage that the center of the cap 2 can be easily and quickly drilled at the tip of the punching extraction core 9 and can be drilled 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内径部に嵌合状態となり、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, at the tip of the punching extraction core 9, a through hole 2a substantially equal to the inner diameter of the tubular body 1 is bored, and thereafter, while the punching extraction core 9 is fixed, By casting the end of the tubular body 1 in the housing main body A, this state was held and fixed by perforation by the tip of the punching extraction core 9, and the fixing was performed by punching extraction core 9 for punching. The tip end of the cylindrical body 1 is fitted into the inner diameter portion of the cylindrical body 1, whereby the intrusion of the molten metal into the cylindrical body 1 stopped in the middle of the housing body A can be reliably blocked, and the cylindrical body 1
There is an advantage that it can be cut off without using 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の一端をホルダー部８にて支持し、他端部を金型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、そのホルダー部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 end of the tubular body 1 is connected and cast in the housing body A so as to be insertable, one end of the tubular body 1 is supported by the holder portion 8 and the other end is supported. Part is mold B
In this state, the cap 2 is perforated with the through hole 2a, so that the cap 2 can be perforated at a particularly accurate position. That is, even if the buckling load due to the punching force acts strongly in the axial direction of the tubular body 1, the tubular body 1 and the punching-out core 9 for punching are supported by both ends of the holder 8 and the mold B. It is possible to maintain the same axial center state with that, and this has the effect of forming the through hole 2a at the correct position of 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 structure is the same as that of the invention of claim 1, and the same effect as this can be exhibited.
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IV−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……ホルダー部、９…
…パンチ用引抜き中子。The drawings show an embodiment of the present invention, and FIGS. 1 to 3 are sectional views showing the steps of the manufacturing method of the present invention, and FIG.
Fig. 3 is a sectional view taken along the line IV-IV in Fig. 3, Fig. 5 is a sectional view showing a main part, Fig. 6 is a sectional view showing a perforated state of the main part of the present invention, and Fig. 7 is a state of completion of casting of the present invention. FIG. 8 is a perspective view of a gear housing, FIG. 9 is a sectional view showing a perforated state of another embodiment of the essential part of the present invention, and FIG. 10 is a sectional view of a usage example of the gear housing. A ... Housing body, 1 ... Cylindrical body, 2 ... Cap, 2a ... Through hole, B ... Mold, 8 ... Holder part, 9 ...
… A punching core for punches.
Claims (2)
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。Claim: What is claimed is: 1. A cap for preventing intrusion of molten metal, which is fitted to a cylindrical body end when the cylindrical body end is connected to the housing body and is castable so that the cylindrical body end can be inserted therethrough. At the tip of the punching core for punching, a through hole having a diameter substantially equal to the inner diameter of the tubular body was punched, and then the end of the tubular body was cast into the housing body while fixing the punching core for punching. A method for manufacturing a gear housing of a rack and pinion type steering device characterized by.
通可能に鋳造する際に、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 a tubular body end is connected to the inside of a housing body and is castable so that it can be inserted, one end of the tubular body is supported by a holder and the other end side is wrapped by a mold to form a tubular body. A cap for preventing penetration of molten metal, which is fitted in advance to the other end of the cylindrical body, is provided with a through hole substantially equal to the inner diameter of the cylindrical body at the tip of the punching core for punching which has the same axis as the cylindrical body. Then, a method of manufacturing a gear housing for a rack and pinion type steering device, characterized in that, after that, while the extraction core for punching is fixed, the end of the tubular body is cast into the housing body.
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 JPH0263670A (en) | 1990-03-02 |
| JPH0729196B2 true 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) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1076357A (en) * | 1996-09-04 | 1998-03-24 | Toyota Motor Corp | Method and device for casting in cylindrical body |
-
1988
- 1988-08-29 JP JP21249688A patent/JPH0729196B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0263670A (en) | 1990-03-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6058803A (en) | Hollow bicycle crank and method for manufacturing same | |
| DE19754959A1 (en) | Wheel for a motor vehicle with hollow spokes | |
| JP5522557B2 (en) | Manufacturing method of steering column | |
| US6497030B1 (en) | Method of manufacturing a lead screw and sleeve mechanism using a hydroforming process | |
| CA2491434C (en) | Method and apparatus for forming a structural member | |
| KR100534383B1 (en) | Method for producing a rack | |
| EP0850826A3 (en) | Bicycle crank and method for manufacturing same | |
| JPH0729196B2 (en) | Rack and pinion type steering gear manufacturing method | |
| US3786543A (en) | Method of producing rotating joint member by casting | |
| JP2017100351A (en) | Mold assembly and manufacturing method of molded article | |
| JPH068652B2 (en) | Yoke member for universal joint and its manufacturing method | |
| DE3808363A1 (en) | Core for injection mould and process for its production | |
| EP1000687B1 (en) | Machinable cast-in-place tube enclosure fittings | |
| DE69925560T2 (en) | Connecting rod with ball joint and its manufacturing process | |
| JPH1034271A (en) | Forming method of annular body having internal tooth and device therefor | |
| US20040025339A1 (en) | Method for manufacturing a crankshaft | |
| JPH0231262B2 (en) | ||
| KR800001268B1 (en) | Manufacturing method of shaft link apparatus of coil spring | |
| CN215431405U (en) | Copper alloy precision casting spare casting mold | |
| JP3751152B2 (en) | Manufacturing method of gear housing | |
| JPS6033091Y2 (en) | Steering gear housing with cast-in pipe | |
| JP3353089B2 (en) | Insert bush | |
| EP1129925A1 (en) | Improvements in steering mechanisms for automotive vehicles | |
| JPH09183379A (en) | Insert boss for steering wheel die-cast mandrel | |
| JP2018058429A (en) | Outer column, manufacturing method thereof, and steering column |