JPH069715B2 - Preventing cutting burr on sheet metal parts - Google Patents
Preventing cutting burr on sheet metal partsInfo
- Publication number
- JPH069715B2 JPH069715B2 JP62267911A JP26791187A JPH069715B2 JP H069715 B2 JPH069715 B2 JP H069715B2 JP 62267911 A JP62267911 A JP 62267911A JP 26791187 A JP26791187 A JP 26791187A JP H069715 B2 JPH069715 B2 JP H069715B2
- Authority
- JP
- Japan
- Prior art keywords
- cutting
- sheet metal
- protruding piece
- peripheral wall
- pressing
- 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 - Fee Related
Links
Landscapes
- Turning (AREA)
- Punching Or Piercing (AREA)
Description
【発明の詳細な説明】 ［発明の目的］ （産業上の利用分野） この発明は、たとえば自動車部品の製作時に発生する切
削バリを防止する板金部品の切削バリ防止方法に関す
る。Description: [Object of the Invention] (Field of Industrial Application) The present invention relates to a method for preventing cutting burrs of sheet metal parts, for example, for preventing cutting burrs that occur during the manufacture of automobile parts.
（従来の技術） たとえば自動車部品としての自動変速機部品のうちセン
タサポートは、一般に第６図に示すように構成されてい
る。すなわち、このセンタサポートは、その本体１が円
板状で、その中央部に環状部２が、外周部に周壁部３が
設けられている。さらに、周壁部３の外周には本体１と
一体に突出片４…が設けられ、これら突出片４…１つお
きに上方と下方に折曲され、上方に折曲された突出片４
ａ…は前記周壁部３の外周面に接合している。(Prior Art) For example, a center support of automatic transmission parts as automobile parts is generally configured as shown in FIG. That is, in this center support, the main body 1 has a disc shape, the annular portion 2 is provided in the central portion, and the peripheral wall portion 3 is provided in the outer peripheral portion. Further, projecting pieces 4 ... Are provided integrally with the main body 1 on the outer periphery of the peripheral wall portion 3, and every other one of these projecting pieces 4 ... is bent upward and downward, and the protruding piece 4 is bent upward.
are joined to the outer peripheral surface of the peripheral wall portion 3.
このような形状の板金製のセンタサポートは、板金から
なる素材をブランキング（打ち抜き加工）し、その板金
ブランクをプレス加工することによって得られるが、そ
の板金部品の前記上方の突出片４ａ…を最終的に切削加
工する必要がある。そこで、この板金部品を切削加工機
にクランプした状態で回転させ、第８図に示すようにバ
イト５の刃先５ａを突出片４ａ…の外側面に当て、切削
加工している。The center support made of sheet metal having such a shape is obtained by blanking (punching) a material made of sheet metal and pressing the sheet metal blank. The above-mentioned protruding pieces 4a of the sheet metal component are ... It is necessary to finally cut. Therefore, this sheet metal part is rotated in a state of being clamped in a cutting machine, and the cutting edge 5a of the cutting tool 5 is applied to the outer side surface of the protruding pieces 4a ... As shown in FIG.
（発明が解決しようとする問題点） ところが、前記突出片４ａ…は所定間隔を存して設けら
れているため、被切削部が断続的となり、第７図に示す
ように切削がとぎれる端縁部６にバイト５の抜ける方向
に切削バリ７が発生する。したがって、切削加工後に前
記切削バリ７を除去するためのバリ取り作業が必要とな
り、工程数が増えるという不都合がある。(Problems to be Solved by the Invention) However, since the protruding pieces 4a ... Are provided at a predetermined interval, the portion to be cut becomes intermittent, and as shown in FIG. A cutting burr 7 is generated in the portion 6 in the direction in which the cutting tool 5 is removed. Therefore, it is necessary to perform a deburring operation for removing the cutting burr 7 after the cutting work, which disadvantageously increases the number of steps.
この発明は前記事情に着目してなされたもので、その目
的とするところは、突出片の端縁部を切削バイトによっ
て切削時に端縁部から発生する切削バリの発生を抑え、
切削工程後に行われていた手作業によるバリ取り工程を
削減もしくは簡略化できる板金部品の切削バリ防止方法
を提供することにある。The present invention has been made in view of the above circumstances, and an object thereof is to suppress the generation of cutting burr generated from the edge portion at the time of cutting the edge portion of the protruding piece with a cutting bit,
It is an object of the present invention to provide a method for preventing cutting burrs of sheet metal parts, which can reduce or simplify the manual deburring step that has been performed after the cutting step.
（問題点を解決するための手段および作用 ） この発明は、前記目的を達成するために、円板状でなる
本体と同本体の周縁部に所定間隔を有して設けられた複
数の突出片とで形成される板金ブランクを板金素材から
打ち抜くブランキング工程と、上記突出片を上記本体か
らほぼ直角に折り曲げると共に同突出片により断続する
円筒状周壁部をプレス加工により形成するプレス工程
と、上記突出片で形成された断続する円筒状の周壁部表
面を円周方向に移動する切削バイトにより切削する切削
工程とを経て製造される板金部品の製造方法において、
上記切削工程の前に、上記切削バイトの移動方向と交差
する上記各突出片の端縁部をプレス加工により面取り
し、上記切削工程で上記突出片の周壁部表面を切削する
ときに上記端縁部に発生する切削バリの発生を防止せし
める面取り工程を付加したことを特徴とする。(Means and Actions for Solving Problems) In order to achieve the above-mentioned object, the present invention has a disc-shaped main body and a plurality of projecting pieces provided at a peripheral portion of the same main body at predetermined intervals. A blanking step of punching a sheet metal blank formed by a sheet metal blank from the sheet metal material, a pressing step of bending the projecting piece from the main body at a substantially right angle and forming a cylindrical peripheral wall portion interrupted by the projecting piece by press working, In a manufacturing method of a sheet metal part manufactured through a cutting step of cutting an intermittent cylindrical peripheral wall surface formed by a protruding piece with a cutting tool that moves in a circumferential direction,
Before the cutting step, the edge of each protruding piece that intersects the moving direction of the cutting bite is chamfered by press working, and the edge is cut when the peripheral wall surface of the protruding piece is cut in the cutting step. It is characterized by adding a chamfering process to prevent the generation of cutting burrs that occur in the part.
（実施例） 以下、この発明の一実施例を図面を参照して説明する。Embodiment An embodiment of the present invention will be described below with reference to the drawings.
第１図乃至第５図は第６図に示した自動変速機部品のセ
ンタサポートの加工方法を示すもので、まず第１図に示
すように、板金からなる素材１１にブランキング型１２
によってブランキングすると、第２図に示すような板金
ブランク１３が得られる。この板金ブランク１３は円板
状で、その周縁部には被切削部としての多数の突出片１
４…が等間隔に設けられている。つぎに、前記平板状の
板金ブランク１３に、第３図にその一部を拡大して示す
ように、金型１５によって型押しすると、前記突出片１
４の端縁部１４ａ、１４ａには金型１５の形状に沿って
面取りされ、面取り部１６、１６が形成される。この場
合、板金ブランク１３には多数の突出片１４…が存在す
るが、金型１５によって１回型押しするだけですべての
突出片１４…に面取り部１６を形成することができる。
面取りされた板金ブランク１３は、プレス加工され、第
６図に示すように所定の形状の板金部品となり、この板
金部品は第４図および第５図に示すように、突出片１４
…の表面がバイト１８によって切削されるが、このとき
突出片１４の端縁部１４ａ、１４ａには面取り部１６、
１６があるため、切削バリの発生を防止することがで
き、切削加工後のバリ取り作業を省略できる。FIGS. 1 to 5 show a method of processing the center support of the automatic transmission component shown in FIG. 6. First, as shown in FIG.
By blanking with, a sheet metal blank 13 as shown in FIG. 2 is obtained. The sheet metal blank 13 has a disk shape, and a large number of protruding pieces 1 as cut portions are provided on the peripheral portion thereof.
4 are provided at equal intervals. Next, as shown in FIG. 3 in a partially enlarged manner, the flat plate-shaped sheet metal blank 13 is embossed with a die 15, and the protruding piece 1
The chamfered portions 16 and 16 are formed on the edge portions 14a and 14a of No. 4 according to the shape of the mold 15. In this case, the sheet metal blank 13 has a large number of projecting pieces 14, but the chamfered portions 16 can be formed on all the projecting pieces 14 by pressing the die 15 once.
The chamfered sheet metal blank 13 is pressed into a sheet metal part having a predetermined shape as shown in FIG. 6, and this sheet metal part has a protruding piece 14 as shown in FIGS. 4 and 5.
The surface of ... is cut by the cutting tool 18, but at this time, the chamfered portion 16 is formed on the end edges 14a, 14a of the protruding piece 14,
Since there is 16, it is possible to prevent the occurrence of cutting burrs and to omit the deburring work after cutting.
また、面取り部１６の面取り角度θは小さいほどバリの
発生を防止できるが、幅ｗが大きくなるので３０〜４５
゜が適当である。Further, the smaller the chamfering angle θ of the chamfered portion 16 is, the more the burr can be prevented, but the width w becomes large, so that it is 30 to 45.
Is suitable.
なお、前記一実施例においては、自動変速機部品のセン
タサポートについて説明したが、これに限定されるもの
ではなく、各種板金部品に適用できるものである。Although the center support of the automatic transmission component has been described in the above-described embodiment, the present invention is not limited to this and can be applied to various sheet metal components.
（発明の効果） 以上説明したように、この発明によれば、板金素材から
ブランキング工程により円板状でなる本体と同本体の周
縁部に所定間隔を有して設けられた複数の突出片とで形
成される板金ブランクを形成し、さらにプレス工程によ
り、上記突出片を上記本体からほぼ直角に折り曲げると
共に同突出片により断続する円筒状周壁部を形成し、さ
らに切削工程により、上記断続する円筒状の周壁部をな
す上記突出片の外表面を切削加工して所望の寸法精度に
加工する板金部品の製造工程において、上記切削い工程
のい前に、上記各突出片の端縁部をプレス加工により面
取り加工することにより、突出片の端縁部を切削バイト
によって切削時に端縁部から発生する切削バリの発生を
抑え、切削工程後に行われていた手作業によるバリ取り
工程を削減もしくは簡略化できる。(Effects of the Invention) As described above, according to the present invention, a disc-shaped main body is formed from a sheet metal material by a blanking process, and a plurality of projecting pieces provided at a peripheral portion of the main body at predetermined intervals. A sheet metal blank formed by forming a cylindrical peripheral wall portion that is bent at a substantially right angle from the main body by the pressing step and that is interrupted by the protruding piece, and that is interrupted by the cutting step. In the manufacturing process of the sheet metal component for machining the outer surface of the protruding piece forming the cylindrical peripheral wall portion to a desired dimensional accuracy, before the cutting step, the edge of each protruding piece is By chamfering by pressing, the edge of the protruding piece is cut by a cutting tool to suppress the generation of cutting burrs from the edge during cutting, and deburring by hand that was performed after the cutting process. Can be reduced or simplified.
したがって、生産効率の高い製造方法が得られ、ひいて
は部品のコストの低減を図ることができるという効果が
ある。Therefore, there is an effect that a manufacturing method with high production efficiency can be obtained, and eventually the cost of parts can be reduced.
第１図乃至第５図はこの発明の加工方法の一実施例を示
すもので、第１図はブランキング時の断面図、第２図は
板金ブランクの平面図、第３図は型押し状態の断面図、
第４図は切削加工時の断面図、第５図は突出片の斜視
図、第６図は一般的な自動変速機部品のセンタサポート
を示す斜視図、第７図は第６図のＡ部を拡大して示す斜
視図、第８図は被切削部の切削加工状態の正面図であ
る。 １１…素材、１３…板金ブランク、１４…突出片（被切
削部）、１４ａ…端縁部、１６…面取り部。1 to 5 show one embodiment of the processing method of the present invention. FIG. 1 is a sectional view at the time of blanking, FIG. 2 is a plan view of a sheet metal blank, and FIG. Cross section of
FIG. 4 is a cross-sectional view at the time of cutting, FIG. 5 is a perspective view of a protruding piece, FIG. 6 is a perspective view showing a center support of a general automatic transmission component, and FIG. 7 is a portion A of FIG. FIG. 8 is an enlarged perspective view, and FIG. 8 is a front view of a cut state of a portion to be cut. 11 ... Material, 13 ... Sheet metal blank, 14 ... Projecting piece (cutting portion), 14a ... Edge portion, 16 ... Chamfered portion.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 藤井 卯喜夫 京都府京都市右京区太秦下角田町13番地 株式会社平安製作所内 (56)参考文献 特公 昭55−33260（ＪＰ，Ｂ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ukio Fujii 13-13 Uzumashita Kakutamachi, Ukyo-ku, Kyoto City, Kyoto Prefecture Heian Plant (56) References Japanese Patent Publication No. 55-33260 (JP, B2)
Claims (1)
間隔を有して設けられた複数の突出片とで形成される板
金ブランクを板金素材から打ち抜くブランキング工程
と、 上記突出片を上記本体からほぼ直角に折り曲げると共に
同突出片により断続する円筒状周壁部をプレス加工によ
り形成するプレス工程と、 上記突出片で形成された断続する円筒状の周壁部表面を
円周方向に移動する切削バイトにより切削する切削工程
とを経て製造される板金部品の製造方法において、 上記切削工程の前に、上記切削バイトの移動方向と交差
する上記各突出片の端縁部をプレス加工により面取り
し、上記切削工程で上記突出片の周壁部表面を切削する
ときに上記端縁部に発生する切削バリの発生を防止せし
める面取り工程を付加したことを特徴とする板金部品の
切削バリ防止方法。1. A blanking step of punching a sheet metal blank formed of a disc-shaped body and a plurality of projecting pieces provided at a peripheral portion of the body with a predetermined interval from a sheet metal material, and the projecting step. A pressing step of bending a piece from the main body at a substantially right angle and forming a cylindrical peripheral wall portion interrupted by the protruding piece by pressing, and a surface of the intermittent cylindrical peripheral wall portion formed by the protruding piece in the circumferential direction. In a method for manufacturing a sheet metal part manufactured through a cutting step of cutting with a moving cutting tool, before the cutting step, the end edge portion of each protruding piece intersecting the moving direction of the cutting tool is pressed. Sheet metal characterized by adding a chamfering step for chamfering and for preventing the generation of cutting burrs generated at the edge portions when the peripheral wall surface of the protruding piece is cut in the cutting step. Cutting burr prevention method of goods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62267911A JPH069715B2 (en) | 1987-10-23 | 1987-10-23 | Preventing cutting burr on sheet metal parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62267911A JPH069715B2 (en) | 1987-10-23 | 1987-10-23 | Preventing cutting burr on sheet metal parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01113131A JPH01113131A (en) | 1989-05-01 |
| JPH069715B2 true JPH069715B2 (en) | 1994-02-09 |
Family
ID=17451330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62267911A Expired - Fee Related JPH069715B2 (en) | 1987-10-23 | 1987-10-23 | Preventing cutting burr on sheet metal parts |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH069715B2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5533260A (en) * | 1978-08-30 | 1980-03-08 | Fuji Electric Co Ltd | Control system for reactive-power compensator |
-
1987
- 1987-10-23 JP JP62267911A patent/JPH069715B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01113131A (en) | 1989-05-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |