JPS5916642A - Formation of hydraulic buffer case - Google Patents

Formation of hydraulic buffer case

Info

Publication number
JPS5916642A
JPS5916642A JP12645982A JP12645982A JPS5916642A JP S5916642 A JPS5916642 A JP S5916642A JP 12645982 A JP12645982 A JP 12645982A JP 12645982 A JP12645982 A JP 12645982A JP S5916642 A JPS5916642 A JP S5916642A
Authority
JP
Japan
Prior art keywords
case
coining
work
bottom part
spinning
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.)
Pending
Application number
JP12645982A
Other languages
Japanese (ja)
Inventor
Tsutomu Yasuda
安田 務
Hachiro Nagamori
長森 八郎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Showa Corp
Original Assignee
Showa Seisakusho Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Showa Seisakusho Co Ltd filed Critical Showa Seisakusho Co Ltd
Priority to JP12645982A priority Critical patent/JPS5916642A/en
Publication of JPS5916642A publication Critical patent/JPS5916642A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00Making hollow objects
    • B21D51/02Making hollow objects characterised by the structure of the objects
    • B21D51/10Making hollow objects characterised by the structure of the objects conically or cylindrically shaped objects

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

PURPOSE:To manufacture easily a damper case without wasting a material, by performing drawing and pressing which continues spinning work and coining work. CONSTITUTION:A damper case 1 is provided like a long pipe by spinning work, and a bottom part 2 is provided in a closed state. Coining work is performed by utilizing residual heat of the spinning work. As for the coining work, a mandrel 3 whose tip part is provided in a prescribed shape is inserted into the damper case 1 through a coining forming machine, and the inside bottom part of the case 1 is compressed between the mandrel 3 and a die 4 and is formed to a bottom face 5 of a prescribed shape. Also, the outside circumferential face of the bottom part 2 is drawn and formed by placing the inside mandrel 3 by a drawing coining punch 6 consisting of ceramics or a sintered hard metal.

Description

【発明の詳細な説明】 この発明は、たとえば自動車等に使用されるような油圧
緩衝用ケースに関し、さらに詳しくは自動車のハンドル
操作をタイヤに伝達するための、−伝達部材として用い
られるような油圧緩衝用ケースの形成法に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hydraulic shock absorbing case used, for example, in an automobile, and more specifically to a hydraulic shock absorbing case used as a transmission member for transmitting steering wheel operations of a vehicle to tires. Concerning a method of forming a buffer case.

従来、この種の油圧緩衝器に使用されるケースは、タイ
ヤの軸支部と連結されておシ、このケースの外周囲にナ
ックルアームノ・ウジングが取付けられ、これを介して
ノ・ンドル操作機構と連結されている。ところが、ナッ
クルアームハウジングと(第 2 頁) ケースとは強固に取付けなければならないため、現状で
はケースの外周囲を高精度に切削したのち、ナックルア
ームハウジングを密嵌状態に取付けていた。
Conventionally, the case used for this type of hydraulic shock absorber is connected to the tire's shaft support, and a knuckle arm nozzle is attached to the outer periphery of this case, and the knuckle arm operating mechanism is connected through this. is connected to. However, since the knuckle arm housing and the case (page 2) must be firmly attached, the current practice is to cut the outer periphery of the case with high precision and then install the knuckle arm housing in a tight fit.

しかし、このような取付手段では、ケースに対し高精度
の切削が要求されるため、多くの労力を要し、また材料
自体にも無駄が多いという問題があった。さらに、ケー
スのボトム部を閉鎖して設けるためにボトムキャップを
圧入したのち溶接して取付けているが、その溶接熱のた
めに熱歪を生じ、再切削を必要とする場合があるなどケ
ースの製作に際しては非常に手間がかかり、不経済にな
るという問題を有していた。
However, such attachment means requires a lot of labor because the case is required to be cut with high precision, and there is a problem in that there is a lot of waste in the material itself. Furthermore, in order to close the bottom of the case, a bottom cap is press-fitted and then welded, but the welding heat may cause thermal distortion and require re-cutting. This has the problem of being very time consuming and uneconomical to manufacture.

そこで、この発明は高精度の切削を要したり、熱歪等を
生じることのない油圧緩衝用ケースの形成法を提供する
ものである。
Therefore, the present invention provides a method for forming a hydraulic shock absorbing case that does not require high-precision cutting or cause thermal distortion.

すなわち、この発明はボトム部を閉鎖状態に形成すべき
筒状のケースをスピニング加工によって形成したのち、
そのケースにナックルアームハウジングを取付けるべく
ケースのボトム部をコイニ(第 3頁) ング加工して設けることを特徴とするものである。
That is, in this invention, after forming a cylindrical case with a closed bottom part by spinning,
The case is characterized in that the bottom part of the case is provided with a coining process in order to attach the knuckle arm housing to the case.

そして、この発明によれば、スピニング加工によってボ
トム部を閉鎖状態に形成できるため、現状のようなボト
ムキャップを要することなく全体を一体形成できる。次
いで、得られたケースのボトム部に対してはコイニング
加工によって簡単に高精度に形成できるため、ナックル
アームハウジングはボトム部に精度よく圧入固定でき安
定した取付けが行なえる。
According to the present invention, since the bottom portion can be formed in a closed state by spinning, the whole can be integrally formed without requiring a bottom cap as is currently the case. Next, since the bottom part of the obtained case can be easily formed with high precision by coining processing, the knuckle arm housing can be press-fitted into the bottom part with high precision and can be stably attached.

このような特徴を有するこの発明の一実施例を以下図面
に基づいて詳述する。
An embodiment of the present invention having such characteristics will be described in detail below with reference to the drawings.

図面は自動車に使用される油圧緩衝器のダンパーケース
を示し、第1図はスピニング加工によって設けられたダ
ンパーケース(1)であって、このスピニング加工によ
シ長尺管状に、捷たボトム部(2)が閉鎖された状態に
設けられ、そのボトム部(2)は若干厚肉に形成されて
ボトム部(2)の強度向−ヒを図っている。
The drawing shows a damper case of a hydraulic shock absorber used in an automobile, and FIG. 1 shows a damper case (1) provided by spinning, and the bottom part is twisted into a long tube shape by the spinning process. (2) is provided in a closed state, and its bottom portion (2) is formed slightly thicker to improve the strength of the bottom portion (2).

上述のスピニング加工は周知のごとく、へら絞シ旋盤を
使用して型に押し付けるべく回転成形するが、ダンパー
ケース(1)のスピニング加工後にそのスピニング加工
の残存熱を利用して後述するコイニング加工を施すのが
適当である。
As is well known, the above-mentioned spinning process is performed by rotationally forming the damper case (1) by pressing it against a mold using a drawing lathe, but after spinning the damper case (1), the remaining heat from the spinning process is used to perform the coining process described later. It is appropriate to apply

上述のコイニング加工は、第2図に示すように、先端部
を所定形状に設けた心金(3)をコイニング形成機を介
してダンパーケース(1)内に挿入し、そのダンパーケ
ース(1)の内底部をこの心金(3)とダイス(4)と
の間で圧縮加圧して所定形状のボトム面(5)に形成し
、またそのボトム部(2)の外周面に対してはセラミッ
クまたは超硬金属よりなる絞りコイニングパンチ(6)
により、内部の心金(3)との間で挾んで絞り形成する
As shown in Fig. 2, the above-mentioned coining process involves inserting a mandrel (3) with a tip shaped into a predetermined shape into a damper case (1) through a coining machine, The inner bottom of the core (3) and the die (4) are compressed to form a bottom surface (5) of a predetermined shape, and the outer peripheral surface of the bottom (2) is made of ceramic. Or drawing coining punch (6) made of carbide metal
, it is sandwiched between the inner mandrel (3) and drawn.

このコイニング加工により、ダンパーケース(1)外周
面の寸法精度は仕上面のすぐれた所定の値に形成するこ
とができる。ところで、前処理としてのスピニング加工
の段階で、ボトム部(2)は周面よシも次第に肉厚が増
大した状態に設けられるため、その増大した曲率を加味
したダイス(4)および絞りコイニングパンチ(6)に
設定して設ける。また、コイニング加工は、ダンパーケ
ース(1)が再結晶温度(第 5頁) 以下に冷却してから冷間加工として形成することもでき
る。
By this coining process, the dimensional accuracy of the outer peripheral surface of the damper case (1) can be formed to a predetermined value with an excellent finished surface. By the way, at the stage of spinning processing as pre-processing, the bottom part (2) is provided with the wall thickness gradually increasing along the circumferential surface, so the die (4) and drawing coining punch take into account the increased curvature. (6). Further, the coining process can also be performed by cold working after the damper case (1) is cooled to a temperature below the recrystallization temperature (page 5).

このように構成されたダンパーケースは、第3図に示す
ように、スピニング加工とコイニング加工とによって絞
り形成されたボトム部(2)の外周面に対し、何ら切削
等を施すことなくナックルアームハウジング(7)を直
接圧入固定することができる。
As shown in Fig. 3, the damper case constructed in this way can be assembled into a knuckle arm housing without any cutting or the like on the outer peripheral surface of the bottom part (2) which has been drawn by spinning and coining. (7) can be directly press-fitted and fixed.

(8)はその固定ピンである。その後、ナックルアーム
ハウジング(7)はダンパーケース(1)に対し、さら
に溶接接合されて強固に取付けられる。
(8) is its fixing pin. Thereafter, the knuckle arm housing (7) is further welded and firmly attached to the damper case (1).

この発明は上述のごとく、ダンパーケースをスピニング
加工とコイニング加工との連続した絞シおよび加圧加工
によって形成するため、材料に無駄がなく、シかもボト
ムキャップが不要とな広その際に要した溶接接合による
熱歪等も完全に解消し得、ダンパーケースを簡単な絞り
形成手段によって低コストに製作できる。
As mentioned above, this invention forms the damper case by continuous drawing and pressure processing of spinning and coining, so there is no waste of material, and there is no need for a bottom cap. Thermal distortion caused by welding and joining can be completely eliminated, and the damper case can be manufactured at low cost using a simple aperture forming means.

【図面の簡単な説明】[Brief explanation of drawings]

図面はこの発明の一実施例を示し、第1図はスピニング
加工後のダンパーケースを示す縦断面図、(第6 頁) 第2図はコイニング加工による形成状態を示す縦断面図
、第3図はダンパーケース形成後におけるナックルアー
ムハウジングの取付は状態を示す縦断面図である。 1・・・ダンパーケース、2・・・ボトム部、3・・・
心金、4・・・ダイス、5・・・所定形状のボトム面、
6・・・絞シコイニングパンチ、7・・・ナックルアー
ムハウジング、8・・・固定ビン。
The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal sectional view showing the damper case after spinning processing (page 6), FIG. 2 is a longitudinal sectional view showing the state of formation by coining processing, and FIG. 2 is a longitudinal sectional view showing how the knuckle arm housing is attached after the damper case is formed. 1... Damper case, 2... Bottom part, 3...
Core metal, 4...Dice, 5...Bottom surface of predetermined shape,
6... Squeezing punch, 7... Knuckle arm housing, 8... Fixed bottle.

Claims (1)

【特許請求の範囲】[Claims] ボトム部を閉鎖状態に形成すべき筒状のケースをスピニ
ング加工によって形成したのち、そのケースにナツクル
アームノ・ウジングを取付けるべくケースのボトム部を
コイニング加工して設けることを特徴とする油圧緩衝用
ケースの形成法。
A hydraulic shock absorbing case characterized in that a cylindrical case whose bottom part is to be formed in a closed state is formed by spinning processing, and then the bottom part of the case is provided by coining processing in order to attach a nutkul arm nozzle to the case. Formation method.
JP12645982A 1982-07-20 1982-07-20 Formation of hydraulic buffer case Pending JPS5916642A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12645982A JPS5916642A (en) 1982-07-20 1982-07-20 Formation of hydraulic buffer case

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12645982A JPS5916642A (en) 1982-07-20 1982-07-20 Formation of hydraulic buffer case

Publications (1)

Publication Number Publication Date
JPS5916642A true JPS5916642A (en) 1984-01-27

Family

ID=14935741

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12645982A Pending JPS5916642A (en) 1982-07-20 1982-07-20 Formation of hydraulic buffer case

Country Status (1)

Country Link
JP (1) JPS5916642A (en)

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