JPH0311859B2 - - Google Patents
Info
- Publication number
- JPH0311859B2 JPH0311859B2 JP59081624A JP8162484A JPH0311859B2 JP H0311859 B2 JPH0311859 B2 JP H0311859B2 JP 59081624 A JP59081624 A JP 59081624A JP 8162484 A JP8162484 A JP 8162484A JP H0311859 B2 JPH0311859 B2 JP H0311859B2
- Authority
- JP
- Japan
- Prior art keywords
- spring seat
- plate material
- cracks
- wrinkles
- automobile
- 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
- 239000000463 material Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 10
- 238000004080 punching Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims 1
- 230000037303 wrinkles Effects 0.000 description 7
- 239000006096 absorbing agent Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
Description
【発明の詳細な説明】
本発明は自動車用スプリングシートの製造方法
に関するもので、従来、絞り加工時に生じ易かつ
たしわや亀裂の発生を抑制するようにしたもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a spring seat for an automobile, which suppresses wrinkles and cracks that tend to occur during drawing.
第１図について自動車の後輪懸架装置の概略を
説明すると、１は車体フレームであつて、車体の
前部から後部に亘つて設けられているものであ
る。この車体フレーム１にはブラケツト２を介し
てリーフスプリング３の前端が支持されている。
図示しないが、リーフスプリング３の後端も同一
構造により、車体フレーム１に支持されている。
リーフスプリング３の中央部の下面には、下方に
開いた断面コ字状のスプリングシート４が設けら
れ、このスプリングシート４に穿設された孔５
（第２図、第３図参照）にＵボルト６を挿通し、
ナツト７を締めることによつて、車軸８を支持す
るようになつている。９は略図的に示した後輪で
ある。 Referring to FIG. 1, a rear wheel suspension system for an automobile will be briefly described. Reference numeral 1 denotes a vehicle body frame, which is provided from the front to the rear of the vehicle body. The front end of a leaf spring 3 is supported on the vehicle body frame 1 via a bracket 2.
Although not shown, the rear end of the leaf spring 3 is also supported by the vehicle body frame 1 by the same structure.
A downwardly open spring seat 4 having a U-shaped cross section is provided on the lower surface of the central portion of the leaf spring 3, and a hole 5 formed in the spring seat 4 is provided.
(See Figures 2 and 3) Insert the U bolt 6 into the
By tightening the nut 7, the axle 8 is supported. 9 is a schematically shown rear wheel.
第２図、第３図に示すように、スプリングシー
ト４の一縁には先端にねじ１０を刻設したロツド
１１が溶接により取り付けられており、シヨツク
アブソーバー１２の下端を支持するようになつて
いる（第１図参照）。１３はナツトである。シヨ
ツクアブソーバー１２の上端は、車体フレーム１
に設けられたブラケツト１４に取り付けられたロ
ツド１５に支持されている。１６はナツトであ
る。 As shown in FIGS. 2 and 3, a rod 11 with a screw 10 cut into the tip is attached by welding to one edge of the spring seat 4, and is adapted to support the lower end of the shock absorber 12. (See Figure 1). 13 is Natsu. The upper end of the shock absorber 12 is connected to the vehicle body frame 1.
It is supported by a rod 15 attached to a bracket 14 provided at the top. 16 is Natsu.
このように使用されるスプリングシート４は、
厚い板材を打抜き工程（ブランキング）によつて
方形に打ち抜き、これを続く絞工程（ドロウイン
グ）によつて断面コ字状（皿状）に成型すること
によつて得るのである。この二つの工程を続けて
行なつた場合、従来にあつては成型後のスプリン
グシートのコーナー部内側にしわや亀裂が発生し
やすかつた。すなわち、抜き工程により内ダイス
側は滑らかでパンチ側は粗面（かえり）が生じ、
そのまま絞り工程に入るとコーナー部が形成され
るとき上記粗面がしわや亀裂を生ずることになる
のである。この部分にしわや亀裂が発生すると、
強度が小さくなるので、絞り性のよい材料を使用
せざるを得なくなり、コスト高となる問題を生じ
た。 The spring seat 4 used in this way is
It is obtained by blanking a thick plate material into a rectangular shape in a blanking process, and then shaping it into a U-shaped cross section (dish-like shape) in a subsequent drawing process. Conventionally, when these two steps were carried out consecutively, wrinkles and cracks were likely to occur inside the corner portions of the molded spring seat. In other words, the punching process produces a smooth surface on the inner die side and a rough surface (burr) on the punch side.
If the drawing process is continued, the rough surface will cause wrinkles and cracks when the corner portions are formed. If wrinkles or cracks occur in this area,
Since the strength is reduced, it is necessary to use a material with good drawability, resulting in a problem of high cost.
本発明はこの点に鑑みて成された方法である。
本発明の一実施例を第４図について説明すると、
まず第４図ａは板材１７を孔１８を有するダイス
１９の上に載置し、上方からパンチ２０を下降さ
せて所定形状のブランク材２１（第４図ｂ参照）
を得る抜き工程を示すものである。第４図ｃはこ
のようにして得られたブランク材２１を、凹部２
２を有するダイス２３上に載置し、上方からパン
チ２４を下降させて所定形状のスプリングシート
４を得る絞り工程を示すものである。 The present invention is a method made in view of this point.
An embodiment of the present invention will be described with reference to FIG.
First, in FIG. 4a, a plate material 17 is placed on a die 19 having a hole 18, and a punch 20 is lowered from above to form a blank material 21 of a predetermined shape (see FIG. 4b).
This figure shows the punching process to obtain . FIG. 4c shows the blank material 21 obtained in this way in the recess 2.
2 shows a drawing process in which a spring sheet 4 of a predetermined shape is obtained by placing the spring sheet 4 on a die 23 having a shape of 2 and lowering a punch 24 from above.
この場合においてブランク材２１の破断面を観
察すると、第４図ｄに示すように打抜き方向に沿
つて面粗さが急激に変化していることが判明し
た。すなわち、ブランク材２１のうち、ダイス１
９側の面（図において下面）は滑らかであり、パ
ンチ２０側の面は粗面になるのである。この粗面
が絞り工程において、しわや亀裂を発生させるの
である。このため本発明では、抜き加工後のブラ
ンク材２１を裏返しにして絞り工程に付すように
している。これによつて従来発生しやすかつたコ
ーナー部のしわや亀裂の発生を抑制することがで
きる。 In this case, when the fractured surface of the blank material 21 was observed, it was found that the surface roughness changed rapidly along the punching direction, as shown in FIG. 4d. That is, of the blank material 21, the die 1
The surface on the 9 side (lower surface in the figure) is smooth, and the surface on the punch 20 side is rough. This rough surface causes wrinkles and cracks during the drawing process. For this reason, in the present invention, the blank material 21 after punching is turned over and subjected to the drawing process. This makes it possible to suppress the occurrence of wrinkles and cracks at the corners, which conventionally tend to occur.
本発明は上述のような製造方法であるから、し
わや亀裂が発生しなくなるので、板材の材質を特
別のものとする必要がなくなつて、コスト的に有
利になる。また、これに関連して製作が容易にな
る利点もある。 Since the present invention uses the manufacturing method as described above, wrinkles and cracks do not occur, so there is no need to use a special material for the plate material, which is advantageous in terms of cost. In addition, there is also the related advantage that manufacturing becomes easier.
第１図は自動車の後輪懸架装置の要部を示す正
面図、第２図は第１図のスプリングシートの底面
図、第３図は第２図の−線に沿つた断面図、
第４図ａ，ｂ，ｃ，ｄは本発明の一実施例の説明
図である。
４……スプリングシート、１７……板材、１
９，２３……ダイス、２０，２４……パンチ、２
１……ブランク材。
Fig. 1 is a front view showing the main parts of a rear wheel suspension system of an automobile, Fig. 2 is a bottom view of the spring seat shown in Fig. 1, and Fig. 3 is a sectional view taken along the - line in Fig. 2.
FIGS. 4a, b, c, and d are explanatory diagrams of an embodiment of the present invention. 4...Spring sheet, 17...Plate material, 1
9,23...Dice, 20,24...Punch, 2
1...Blank material.
Claims (1)
を絞り加工により断面コ字状に折り曲げて形成す
る自動車用スプリングシートの製造方法におい
て、前記板材の打抜き後のブランク材を裏返しに
して絞り加工に付し、前記断面コ字状の形状に形
成することを特徴とする自動車用スプリングシー
トの製造方法。1. In a method for manufacturing a spring seat for an automobile, which involves punching out a plate material into a predetermined shape and bending the punched plate material into a U-shaped cross section through drawing processing, the blank material after the punching of the plate material is turned over and subjected to drawing processing. A method of manufacturing a spring seat for an automobile, characterized in that the spring seat is formed into the U-shaped cross section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59081624A JPS59209443A (en) | 1984-04-23 | 1984-04-23 | Production of spring seat for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59081624A JPS59209443A (en) | 1984-04-23 | 1984-04-23 | Production of spring seat for automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59209443A JPS59209443A (en) | 1984-11-28 |
| JPH0311859B2 true JPH0311859B2 (en) | 1991-02-18 |
Family
ID=13751481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59081624A Granted JPS59209443A (en) | 1984-04-23 | 1984-04-23 | Production of spring seat for automobile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59209443A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2864469B2 (en) * | 1990-08-06 | 1999-03-03 | 曙ブレーキ工業株式会社 | Press machine for chamfering |
| KR101591385B1 (en) * | 2012-09-28 | 2016-02-03 | 어드밴스드 매뉴팩츄어 테크놀로지 센터, 차이나 아카데미 오브 머시너리 사이언스 앤드 테크놀로지 | Manufacturing method and device for automobile spring seat |
| CN104972859A (en) * | 2015-06-16 | 2015-10-14 | 吉林大学 | Automobile steel plate spring assembly with auxiliary spring made of composite material and assembly method thereof |
-
1984
- 1984-04-23 JP JP59081624A patent/JPS59209443A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59209443A (en) | 1984-11-28 |
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