JPS59179248A - Production of fork - Google Patents
Production of forkInfo
- Publication number
- JPS59179248A JPS59179248A JP5724983A JP5724983A JPS59179248A JP S59179248 A JPS59179248 A JP S59179248A JP 5724983 A JP5724983 A JP 5724983A JP 5724983 A JP5724983 A JP 5724983A JP S59179248 A JPS59179248 A JP S59179248A
- Authority
- JP
- Japan
- Prior art keywords
- shape
- clamping
- plate
- fork
- curved part
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/74—Making machine elements forked members or members with two or more limbs, e.g. U-bolts, anchors
Abstract
Description
【発明の詳細な説明】
この発明は、フォークリ′フトに用いる爪の製コ告方法
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for making a pawl for use in a forklift.
フラットな板をＬ字状に屈Ｔｉ１］シてフォークＩＪフ
ｌ゛用の爪金製造すると、側曲部の外コープーー力（欠
肉状ｊ原となるので、強度が低下する。When a flat plate is bent into an L-shape to manufacture a pawl for a fork IJ plate, the strength decreases because the outer force of the side bending portion (underfilling) occurs.
そこで、現在の製造方法は、まず、／ −２００位に加
熱され１−系材を、２投造により７１明〜畏い７：反状
イ杢となるように加工する。Therefore, in the current manufacturing method, first, the 1-type material is heated to about /-200°C and processed by 2-throwing to become 71 to 7: 7: Reverse-shaped heather.
このとき、上記板状体の屈曲部分の外コーナーとなる面
に屈曲にともなう欠肉をなくする山形の突出部を設けて
おく。At this time, a chevron-shaped protrusion is provided on the surface that becomes the outer corner of the bent portion of the plate-shaped body to eliminate a lack of thickness due to the bending.
その後に、プレスにより板状体をＬ字状に屈曲する。Thereafter, the plate-like body is bent into an L-shape by pressing.
このような製造方法によると、手作業により山形の突出
部を作るので、生産性が悪く、コストが高くなる問題が
あった。According to such a manufacturing method, since the chevron-shaped protrusion is created manually, there is a problem that productivity is low and costs are high.
また、山形の３（高部を作るのに高度な熟線を必要とす
る間１！もらった。Also, I received Yamagata's 3 (during which requires a high level perpendicular line to create the high part!).
この発明は、プレスによりＬ字状に板状体を屈曲したと
き、屈曲部分に欠肉が発生しないようにして、上述の欠
点を解消すること全目的としている。The entire purpose of the present invention is to eliminate the above-mentioned drawbacks by preventing the occurrence of underfilling in the bent portion when a plate-like body is bent into an L-shape by pressing.
この発明は、細長い板状体の屈曲部分を挾む両側をクラ
ンプ装置によりクランプしたのち、少なくとも片方のク
ランプ装置面？接近方向に移動させながら、上記クラン
プ装置間の加熱された部分全１・膨出させ、次いで、）
形出部分の両４１１１面を加圧しながら、上記膨出部を
界としてプレスによりＬ字状に板状体を屈曲する爪の」
１生方法を提供する。In this invention, after clamping both sides of a bent portion of an elongated plate-like body using a clamping device, at least one surface of the clamping device is clamped. While moving in the approaching direction, the heated part between the above clamping devices is inflated, and then)
While applying pressure to both sides of the formed part, the plate-shaped body is bent into an L-shape by pressing using the bulged part as a boundary.
1.Provide a life method.
以下、この発明の芙施例を添イー］図面に基づいて説明
する。Hereinafter, embodiments of the present invention will be described based on the attached drawings.
脣ず、第１Ｉン１で示したようにＩＮＩＩ良い金属製の
１反状体１を製作する。As shown in the first section, a metal 1-shaped body 1 with good INII is manufactured.
上記の板状体１（は、素］２をプレスするか成・ｔま（
瀾・）反を切１１つ〒して得る。Press the above plate-shaped body 1 (base) 2.
〾・)Cut 11 pieces and get it.
次に、第２図で示したように板状体１の屈曲部分の両側
をそれぞれクランプ装置ｉ＆２．３によりクランプする
。Next, as shown in FIG. 2, both sides of the bent portion of the plate-shaped body 1 are clamped by clamp devices i & 2.3, respectively.
」二層のクランプ装置２．３は、それぞれ上下−列の夾
着体にエリ構成され、上下の片方を７多動させて挟着及
び挾７Ｉを解除するようになっている。The two-layer clamping device 2.3 is constructed of upper and lower rows of clamping bodies, respectively, and is designed to release clamping and clamping by moving one of the upper and lower sides 7I.
また、上記板状体１のクランプ装置次”２．；３間の部
分は、クランプｉ’＋ｉＪに加熱しておくか、或はクラ
ンプ後に上記クランプ装部２．８に通准して加熱したり
、ガスバ・−ナーにより加熱する。In addition, the part between the clamping devices 2 and 3 of the plate-shaped body 1 is heated to the temperature of the clamp i'+iJ, or heated by passing it through the clamping part 2.8 after clamping. or heat with a gas burner.
そして、クランプ装置２．３の少なくとも一方を接近方
向に移動させながら、４［Ｓ３図で示したように、瓦状
イ本１にｊ形出部４をイ乍る。Then, while moving at least one of the clamp devices 2.3 in the approach direction, the j-shaped portion 4 is attached to the tile-shaped book 1 as shown in Figure S3.
その後にクランプ装置？、３から板状体°１を収シ外す
。Clamp device after that? , 3. Remove the plate-shaped body 1 from 3.
次に、第５図から第ｒ図で示し１ｊようにプレス金型ら
のＴ型上に板状体１を載置する。Next, the plate-shaped body 1 is placed on the T-shape of the press mold as shown in FIGS. 5 to 1j.
このどき、板状体１の屈曲−所に形出部４を位買させて
おく。At this time, the shaped portion 4 is placed at the bent portion of the plate-shaped body 1.
そして、プレス金型５に板状体１’ｒＬ字状に屈曲する
と共に、プレス金型５の画側にＬ！Ｉｉ！ 匝しである
サイド金型６を内方にｔＱｉＪ進させなから形出１１ｔ
１（’を加圧し、板状体１０両側縁刀・らの食み出しを
防止する。Then, the plate-shaped body 1'r is bent into an L-shape in the press mold 5, and the L-shape is bent on the image side of the press mold 5. Ii! Move the side mold 6, which is a mold, inward by tQiJ to form the mold 11t.
1(') to prevent protrusion of the edges on both sides of the plate-shaped body 10.
その後にサイド金型６を後退させ、プレス金型６を聞い
て第８図で示した爪Ａを取り出す。Thereafter, the side mold 6 is moved back, and the press mold 6 is pressed to take out the pawl A shown in FIG.
なお、爪Ａの先ｆＩｆＭ部から先端に向は順次肉厚がｇ
７ （なるテーパーは、爪の製造後或は爪の製造時に設
けておく。Furthermore, from the tip fIfM of the claw A to the tip, the wall thickness increases sequentially from g to the tip.
7 (The taper is provided after or during the manufacture of the nails.
以上のように、この発明による爪の製造方法によれば、
細長い１反状体の屈曲せんとする部分の両１１１１１を
クランプ装置によシフランプしたのち、少なくとも片方
のクランプ装置を機造方向に移動さぜながら、クランプ
ｌ″１１１或はクランプ後に加熱した部分を）形出させ
、次いで膨出部分の両側面を加圧しながら、上記膨出部
を界としてプレスにより１１字状に板状体を屈曲するの
で、屈１１１目′１１り分の外コーナーに発生した欠肉
は、ｊ形出部によって均一な肉ノ＝ｐ：とすることがで
きる。As described above, according to the nail manufacturing method according to the present invention,
After sifting both parts 11111 of the part to be bent of the elongated rectangular body using a clamping device, move at least one of the clamping devices in the machine direction while clamping the clamp l''111 or the heated part after clamping. ), and then, while applying pressure to both sides of the bulge, the plate is bent into an 11-shape using the bulge as a boundary. The resulting missing flesh can be made uniform by the shaped part j.
このため、強度低下をなくすることができる。Therefore, it is possible to eliminate a decrease in strength.
図面はこの発明の実施例を示すもので、第１１図は板状
体の力斗視図、Ｗｆ ２図及び第’：”ｊ ｌｉイｌは
彰高部金作る正面図、第４図は板状体の縦断側面ド１、
第５図はプレス金型の正面図、第６図は同上の；従！ｔ
ｙｒ ’１ｌｌｌ而図、第面図はプレスした状態を示す
正面図、第８図は爪の斜視図である。
Ａ・・・爪、１・板状体、２ ・クランプ装置’ｉ ％
；３・・・クランプ装置ば、４・・１形出部、δ・・
・プレス金型、６・・・ザイト゛金型The drawings show an embodiment of the present invention, and FIG. 11 is a power perspective view of the plate-shaped body, FIG. 2 and FIG. Longitudinal side surface of the plate-shaped body 1,
Figure 5 is a front view of the press die, Figure 6 is the same as above; t
Figure 8 is a front view showing the pressed state, and Figure 8 is a perspective view of the claw. A...claw, 1. plate-shaped body, 2. clamp device'i %
; 3... Clamp device, 4... 1-shaped protrusion, δ...
・Press mold, 6... Zyto mold
Claims (1)
１をクランプ装置によシクランブしたのち、少なくとも
片方のクランプ装置を接近方向に移動させなカニら、ク
ランプ前或はクランプ後に加；整した部分を）影υ３さ
せ、次いで）甲高部分の両側面を加圧しながら、上記膨
出部を界としてプレスによりＬ字状に７返状体を屈曲す
る爪の製造方法。1 mountain 1 (111
After clamping 1 with the clamping device, move at least one of the clamping devices in the approaching direction. A method for manufacturing a nail, in which the seven-curved body is bent into an L-shape by pressing, using the bulge as a boundary while applying pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5724983A JPS59179248A (en) | 1983-03-30 | 1983-03-30 | Production of fork |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5724983A JPS59179248A (en) | 1983-03-30 | 1983-03-30 | Production of fork |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59179248A true JPS59179248A (en) | 1984-10-11 |
| JPS6358063B2 JPS6358063B2 (en) | 1988-11-14 |
Family
ID=13050249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5724983A Granted JPS59179248A (en) | 1983-03-30 | 1983-03-30 | Production of fork |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59179248A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112792176A (en) * | 2020-12-23 | 2021-05-14 | 安徽安鑫货叉有限公司 | Fork bending device of forklift |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04116280U (en) * | 1991-03-29 | 1992-10-16 | スズキ株式会社 | conveyor sealing device |
-
1983
- 1983-03-30 JP JP5724983A patent/JPS59179248A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112792176A (en) * | 2020-12-23 | 2021-05-14 | 安徽安鑫货叉有限公司 | Fork bending device of forklift |
| CN112792176B (en) * | 2020-12-23 | 2022-12-06 | 安徽安鑫货叉有限公司 | Fork bending device of forklift |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6358063B2 (en) | 1988-11-14 |
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