JPH0138572B2 - - Google Patents
Info
- Publication number
- JPH0138572B2 JPH0138572B2 JP9023482A JP9023482A JPH0138572B2 JP H0138572 B2 JPH0138572 B2 JP H0138572B2 JP 9023482 A JP9023482 A JP 9023482A JP 9023482 A JP9023482 A JP 9023482A JP H0138572 B2 JPH0138572 B2 JP H0138572B2
- Authority
- JP
- Japan
- Prior art keywords
- piston
- outward flange
- hole
- manufacturing
- bending
- 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 22
- 238000000034 method Methods 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 238000005452 bending Methods 0.000 claims description 7
- 238000007747 plating Methods 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005304 joining Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/10—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass pistons
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Braking Arrangements (AREA)
Description
【発明の詳細な説明】
この考案は、油圧のデイスクブレーキ等に用い
られる比較的小型のピストンの製造方法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION This invention relates to a method for manufacturing relatively small pistons used in hydraulic disc brakes and the like.
従来、デイスクブレーキ用ピストンの製造は、
第１図に示すように、まず棒鋼切断工程により、
長い棒鋼を切断して所定寸法の素材１を作り、そ
してこの素材１をすえ込みの鍜造によつて長さ方
向に圧縮してから、焼鈍によつて軟化させ、それ
からボンダリユーベ処理によつて潤滑剤を付着さ
せる。次に、鍜造成形によつて上方へ開口する中
空部２を成形し、それから切削加工によつて、中
空部２の上方開口部の上側周縁に外向きフランジ
部３を成形し、その後、研摩およびメツキ処理を
経てピストンを完成している。 Traditionally, the production of pistons for disc brakes was
As shown in Figure 1, first, the steel bar cutting process
A long steel bar is cut to make a material 1 of a predetermined size, and this material 1 is compressed in the length direction by swaging forging, softened by annealing, and then lubricated by bondar-Ube treatment. Attach the agent. Next, the hollow part 2 that opens upward is formed by forging, and then the outward flange part 3 is formed on the upper periphery of the upper opening of the hollow part 2 by cutting, and then, the outward flange part 3 is formed by cutting. The piston is then completed through a plating process.
ところが、このような方法は、鍜造一体成形に
よつてピストンを製造するものであるから、第１
図成形工程中の斜線部すなわち中空部２の内周側
のずい肉を取り除くことができず、その分だけ重
量が重く素材を無駄に使つている。また、素材と
して使用している棒鋼は鋼板などよりも割り高で
あり、しかも一体成形による加工が厳しいため、
前工程（すえ込み、焼鈍ボンダリユーベ処理）を
多くする必要があり、生産タクトが落ち、工程の
増加による生産コストの上昇を招来している。 However, in this method, the piston is manufactured by integral molding, so the first
During the figure forming process, it is not possible to remove the diagonal line part, that is, the thickening on the inner peripheral side of the hollow part 2, and the weight is correspondingly heavy, resulting in wasted material. In addition, the steel bar used as a material is more expensive than steel plates, etc., and it is difficult to process it by integral molding.
It is necessary to increase the number of pre-processes (swaging, annealing bonder-juve treatment), which reduces production tact and increases production costs due to the increased number of processes.
この発明は、鋼板を素材として作つた２つの素
形材の接合によつてピストンを成すことにより、
上述した従来の問題を一挙に解決して、ピストン
自体の軽量化、素材費の低減および生産タクトの
上昇によるコストメリツトの増大を図ることを目
的とする。 In this invention, by forming a piston by joining two molded materials made of steel plates,
The purpose of this invention is to solve the above-mentioned conventional problems all at once, and to increase cost benefits by reducing the weight of the piston itself, reducing material costs, and increasing production tact.
すなわち、この発明によれば、第２図に示すよ
うに、鋼板素材からブランク、絞り、コイニング
によつて、上方へ開口する中空部４を有するカツ
プ状の第１の素形材５を作る。また、別の工程に
おいて、鋼板素材からブランクおよび２段階の曲
げ加工によつて、中央部に貫通孔６を有し、かつ
この貫通孔６の上側周縁に外向きフランジ部７を
有する第２の素形材８を作る。なお、この第２の
素形材８は、前段の曲げ加工に際し、予め貫通孔
６を有するドーナツ状の鋼板として成形してお
く。また、実際には前段の曲げ加工において、貫
通孔６の上側周縁に、上方へ延出する環状突出部
９を曲げ成形し、その後、後段の曲げ加工におい
て、環状突出部９の上部を更に外方に曲げて前記
外向きフランジ部を成形している。 That is, according to the present invention, as shown in FIG. 2, a cup-shaped first material 5 having a hollow portion 4 opening upward is made from a steel sheet material by blanking, drawing, and coining. In another process, a blank is made from a steel sheet material and subjected to two-stage bending process to form a second plate having a through hole 6 in the center and an outward flange portion 7 on the upper peripheral edge of the through hole 6. Make material 8. The second formed material 8 is previously formed into a donut-shaped steel plate having through holes 6 during the previous bending process. In fact, in the first bending process, an annular protrusion 9 extending upward is formed on the upper periphery of the through hole 6 by bending, and then, in the second bending process, the upper part of the annular protrusion 9 is further removed. The outward flange portion is formed by bending it toward the outside.
このようにして、第１、第２の素形材５，８を
個別に作つた後は、第１の素形材５の上方開口部
に、第２の素形材８の外周部を摩擦溶接してこれ
らを一体化する。これにより第１図に示した従来
の製造方法における研摩工程前の成形体と同様の
外観形状のものが得られる。 After the first and second molded materials 5 and 8 are made individually in this way, the outer circumference of the second molded material 8 is rubbed onto the upper opening of the first molded material 5. Weld them together. As a result, a molded product with an appearance similar to that of the molded product before the polishing step in the conventional manufacturing method shown in FIG. 1 can be obtained.
その後は、従来と同様の研摩およびメツキ処理
を加えてピストンを完成する。 After that, the piston is completed by the same polishing and plating processes as in the past.
この完成したピストンは、第１図に示した従来
のものの斜線部に相当するずい肉がなく、このず
い肉が除去されたことになる。 This completed piston does not have the fillet corresponding to the shaded area of the conventional piston shown in FIG. 1, which means that the fillet has been removed.
なお、この製造されるピストンはデイスクブレ
ーキ用としてのみならず、各種用途のシリンダ機
構のピストンとして広範囲に適用可能である。 The piston thus produced can be widely used not only for disc brakes but also as pistons for cylinder mechanisms for various uses.
以上のように、この発明による方法では、鋼板
を素材として作つた２つの素形材を圧接してピス
トンを成しているから、ピストン内部のずい肉を
除去してそれ自体の軽量化を図ることができ、か
つ素材を必要最小限に抑えて素材費の低減を図る
ことができる。しかも、製造工程がプレスと溶接
工程（従来と共通工程は除く）となるので、生産
タクトが上昇し、コストメリツトが大きい。 As described above, in the method according to the present invention, since the piston is formed by press-welding two molded materials made of steel plates, the weight inside the piston is removed to reduce the weight of the piston itself. In addition, it is possible to reduce material costs by minimizing the amount of materials needed. Moreover, since the manufacturing process consists of pressing and welding processes (excluding processes common to conventional ones), the production takt time increases and there are great cost benefits.
第１図従来のピストンの製造方法における工程
説明図、第２図はこの発明によるピストンの製造
方法における工程説明図である。
４……中空部、５……第１の素形材、６……貫
通孔、７……フランジ部。
FIG. 1 is a process explanatory diagram of a conventional piston manufacturing method, and FIG. 2 is a process explanatory diagram of a piston manufacturing method according to the present invention. 4... Hollow part, 5... First formed material, 6... Through hole, 7... Flange part.
Claims (1)
開口部の上側周緑に外向きフランジ部を備えたピ
ストンの製造方法において、鋼板の絞りおよびコ
イニングによつて、上方へ開口する中空部を有す
るカツプ状の第１の素形材を作ると共に、中央部
に貫通孔を有するドーナツツ状の鋼板の曲げ加工
によつて、その貫通孔の上側周緑に外向きフラン
ジを有する第２の素形材を作り、そして第１の素
形材の上方開口周部に第２の素形材の外周部を溶
接した後、これらの接合体に研摩、メツキ処理し
てピストンを完成するピストンの製造方法。1. In a method for manufacturing a piston that has a hollow portion that opens upward and is provided with an outward flange portion on the upper circumference of the upper opening, the hollow portion that opens upward is formed by drawing and coining a steel plate. At the same time, by bending a donut-shaped steel plate having a through hole in the center, a second material having an outward flange on the upper circumference of the through hole is made. A method for producing a piston, in which the piston is completed by making a material, welding the outer periphery of a second material to the upper opening periphery of the first material, and then polishing and plating the joined body. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9023482A JPS58206327A (en) | 1982-05-27 | 1982-05-27 | Piston manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9023482A JPS58206327A (en) | 1982-05-27 | 1982-05-27 | Piston manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58206327A JPS58206327A (en) | 1983-12-01 |
| JPH0138572B2 true JPH0138572B2 (en) | 1989-08-15 |
Family
ID=13992794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9023482A Granted JPS58206327A (en) | 1982-05-27 | 1982-05-27 | Piston manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58206327A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR9001859A (en) * | 1990-04-17 | 1991-11-12 | Metal Leve Sa | EMBOLO AND EMBOLO MANUFACTURING PROCESS |
| JP3781099B2 (en) | 2000-06-02 | 2006-05-31 | トヨタ自動車株式会社 | Hollow product, fluid processing system, and method for joining hollow members |
-
1982
- 1982-05-27 JP JP9023482A patent/JPS58206327A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58206327A (en) | 1983-12-01 |
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