JPH0331467Y2 - - Google Patents
Info
- Publication number
- JPH0331467Y2 JPH0331467Y2 JP15688985U JP15688985U JPH0331467Y2 JP H0331467 Y2 JPH0331467 Y2 JP H0331467Y2 JP 15688985 U JP15688985 U JP 15688985U JP 15688985 U JP15688985 U JP 15688985U JP H0331467 Y2 JPH0331467 Y2 JP H0331467Y2
- Authority
- JP
- Japan
- Prior art keywords
- rivet
- snap
- head
- shaft
- shaped
- 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
- 230000002950 deficient Effects 0.000 claims description 13
- 238000004080 punching Methods 0.000 description 5
- 238000010008 shearing Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000012489 doughnuts Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Landscapes
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
- Insertion Pins And Rivets (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、大型車両の車台フレーム等の製造に
際して屡々発生する不良鋲の抜取装置に関するも
のである。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a device for removing defective rivets that often occur during the manufacture of chassis frames for large vehicles.
（従来の技術）
従来から、大型車両の車台フレーム等の製造に
際して広く採用されている油圧作動式の鋲装置
は、大体コ字状又はＣ字状をなすフレーム又はヨ
ークの一端部に油圧シリンダを設け、同シリンダ
内に油圧により往復駆動されるピストンを嵌装し
て、その軸端部及び同軸端部に対向するフレーム
の他端部に、互に協働して鋲頭を成形しかしめる
スナツプを夫々着脱自在に装着した構造を具えて
いる。このような鋲機を使用して鋲作業を行
なう場合、鋲軸の長さが正規寸度より許容限度以
上に長いか又は短い等のために、鋲頭が正しく成
形されず、鋲軸線に対し偏つて成形されたり、成
形された頭部の寸度が不十分になることがある。
技術上良く知られているように、上記不良形状の
鋲頭を有する鋲は、所定の強度を発揮し得ない惧
れがあるので、これを抜取り新たな鋲と交換する
必要がある。従来、上記不良鋲の抜取りに際して
は、たがねに柄を取付けた特殊の剪断工具を鋲頭
に当てがい、大ハンマにより剪断工具を打撃して
鋲頭を剪断したのち、ポンチに柄を取付けた特殊
の打抜き工具を残つている鋲軸に当てがい、大ハ
ンマにより同打抜き工具を打撃して鋲軸を抜取つ
ていた。(Prior Art) Hydraulically actuated riveting devices, which have been widely used in the manufacture of chassis frames for large vehicles, use a hydraulic cylinder installed at one end of a generally U-shaped or C-shaped frame or yoke. A snap is provided in which a piston that is reciprocated by hydraulic pressure is fitted into the same cylinder, and the shaft end and the other end of the frame opposite the coaxial end are joined together to form a stud head. It has a structure in which each can be attached and detached. When performing tack work using such a tack machine, if the length of the tack shaft is longer or shorter than the allowable limit than the standard size, the tack head may not be formed correctly and may not be aligned with the tack axis. The head may be unevenly molded or the molded head may be of insufficient size.
As is well known in the art, a tack with an irregularly shaped tack head may not be able to provide the desired strength, so it must be removed and replaced with a new tack. Conventionally, when removing the defective rivets mentioned above, a special shearing tool with a handle attached to a chisel was applied to the rivet head, the shearing tool was struck with a sledgehammer to shear the rivet head, and then the handle was attached to the punch. A special punching tool was applied to the remaining rivet shaft, and the punching tool was struck with a sledgehammer to remove the rivet shaft.
（考案が解決しようとする問題点）
上記従来の不良鋲抜取手法では、鋲頭の剪断
と、鋲軸の抜取りとが、夫々特殊工具を大ハンマ
により打撃して行なわれていたので、作業に危険
を伴ない、又多大の作業時間を要し、コスト高を
招く不具合があつた。(Problems to be solved by the invention) In the conventional method for removing defective rivets described above, the shearing of the rivet heads and the extraction of the rivet shafts were each performed by hitting a special tool with a sledgehammer. There was a problem that was dangerous, required a lot of work time, and led to high costs.
（問題点を解決するための手段）
本考案は、上記に鑑み創案されたもので、正規
形状の鋲頭に当接する端部の外径が鋲後の鋲軸
の外径より僅かに小さく、上記端部から遠ざかる
に従がい漸増する外径を有するテーパピン状の打
抜きピンを具えた第１スナツプと、上記第１スナ
ツプの小径端部に対向する端部に不良形状の成形
鋲頭を収容する凹所を具えた第２スナツプとを具
備し、上記第１及び第２スナツプの一方を、大体
コ字状をなす鋲機フレームの一端に着脱自在に
装着すると共に、他方のスナツプを上記フレーム
の他端に装架された油圧シリンダのピストン軸端
部に着脱自在に装着してなることを特徴とするも
のである。(Means for Solving the Problems) The present invention was devised in view of the above, and the outer diameter of the end that comes into contact with the regular-shaped tack head is slightly smaller than the outer diameter of the tack shaft after the tack is mounted. a first snap provided with a punched-out pin in the form of a tapered pin having an outer diameter that gradually increases as it moves away from the end, and a molded rivet head with a malformed shape is accommodated in the end opposite to the small diameter end of the first snap. a second snap having a recess; one of the first and second snaps is removably attached to one end of the generally U-shaped rivet machine frame, and the other snap is attached to the frame. It is characterized in that it is detachably attached to the piston shaft end of a hydraulic cylinder mounted at the other end.
（実施例）
以下本考案の実施例を添付図面について具体的
に説明する。図中符号１０は自体周知の油圧式
鋲機を総括的に示し、同鋲機は概ねコ字状をな
すフレーム又はヨーク１２と、同フレーム１２の
一端部にナツト１４によつて締着固定された油圧
シリンダ１６と、同シリンダ内に摺動自在に嵌装
されたピストン１８とを具え、同ピストン１８の
軸１８′の端部に後に詳述する第１のスナツプ２
０が着脱自在に装着され、又上記フレーム１２の
他端部には、後に詳述する第２のスナツプ２２が
着脱自在に装着されている。(Example) Examples of the present invention will be specifically described below with reference to the accompanying drawings. The reference numeral 10 in the drawing generally indicates a well-known hydraulic rivet machine, and the rivet machine has a generally U-shaped frame or yoke 12, and is fastened to one end of the frame 12 by a nut 14. A hydraulic cylinder 16 is provided, and a piston 18 is slidably fitted within the cylinder, and a first snap 2, which will be described in detail later, is attached to the end of a shaft 18' of the piston 18.
0 is detachably attached to the frame 12, and a second snap 22, which will be described in detail later, is detachably attached to the other end of the frame 12.
次に、第２図に拡大して示されているように、
第１スナツプ２０は、ピストン軸１８′の端部に
設けられた嵌合孔内に嵌装される柄部２０ａと打
抜きピン２０ｂとを具えている。柄部２０ａは脱
落防止用のＯリングを嵌装する半円形断面の溝２
０ｃを具えており、一方打抜きピン２０ｂは、鋲
２４に予め形成されている正規形状の鋲頭２４ａ
に当接する下端部の外径d1が、鋲後の鋲軸２４
ｂの直径d2より僅かに小さく、上方に向つて漸増
する直径を有するテーパピン状をなしている。一
例として、鋲前の鋲孔の直径が10.6mm、鋲後
の鋲軸直径d2が約11mmのとき、ピン２０ｂの下端
部の直径d1は10mm、上端部の直径d3は11mm程度で
あることが好ましい。 Next, as shown enlarged in Figure 2,
The first snap 20 includes a handle 20a and a punched pin 20b that are fitted into a fitting hole provided at the end of the piston shaft 18'. The handle 20a has a groove 2 with a semicircular cross section into which an O-ring is fitted to prevent it from falling off.
0c, while the punched pin 20b has a regular-shaped stud head 24a preformed on the stud 24.
The outer diameter d 1 of the lower end that comes into contact with the rivet shaft 24 after the rivet is
It has a tapered pin shape with a diameter that is slightly smaller than the diameter d 2 of b and gradually increases upward. As an example, when the diameter of the rivet hole before the rivet is 10.6 mm and the diameter d 2 of the rivet shaft after the rivet is approximately 11 mm, the diameter d 1 of the lower end of the pin 20b is 10 mm, and the diameter d 3 of the upper end is approximately 11 mm. It is preferable that there be.
又、第２スナツプ２２は、上記フレーム１２の
他端部に設けられた嵌合孔内に嵌装される柄部２
２ａと、受部２２ｂとから構成されており、柄部
２２ａには、脱落防止用のＯリングを嵌装する半
円形断面の溝２２ｃが設けられている。上記受部
２２ｂには、鋲２４の不良形状に成形された鋲頭
２４ｃを収容する角溝状の凹所２２ｄが設けられ
ている。 Further, the second snap 22 has a handle 2 that is fitted into a fitting hole provided at the other end of the frame 12.
2a and a receiving part 22b, and the handle part 22a is provided with a groove 22c having a semicircular cross section into which an O-ring for preventing falling off is fitted. The receiving portion 22b is provided with a rectangular groove-shaped recess 22d for accommodating the rivet head 24c of the rivet 24, which is formed into a defective shape.
上記鋲機１０を用いて鋲を行なう場合、そ
のフレーム１２の両端部には、第１及び第２スナ
ツプ２０及び２２に代えて、通常の鋲頭成形用ス
ナツプ（図示せず）が装着されている。そして、
所定鋲径の鋲２４の軸部２４ｂを被鋲接材２６ａ
及び２６ｂの鋲孔内に挿入し、被鋲接材２６ｂか
ら突出した鋲軸部によつて鋲頭が加圧成形され
る。即ち、上下のスナツプ間に鋲頭２４ａ及び成
形されて新たな鋲頭となる鋲軸端部を位置させ、
操作ボタン３０を操作することによつて、油圧制
御装置３２の作動により油圧シリンダ１６のピス
トン上側室に作動圧油が供給され、ピストン軸１
８′及び上方スナツプが一体的に下降して鋲作
業が行なわれる。この際、鋲軸２４ｂの軸線と上
下スナツプ軸線とが略一致せず、加圧力の中心線
が鋲軸に対して著しく傾斜した場合、鋲軸２４ｂ
の長さが過大又は過少の場合等において、時折第
２図に示すような不良形状の鋲頭２４ｃが成形さ
れることがある。このような形状不良の鋲頭２４
ｃでは、所期の鋲接強度を確保することができな
いので、不良鋲を抜取り再度新しい鋲で鋲接を行
なう必要がある。この場合、第１図に示すよう
に、フレーム１２の一端部におけるピストン軸１
８′側に第１スナツプ２０を装着すると共に、フ
レーム１２の他端部に協働する第２スナツプ２２
を装着したのち、第２図に示すように、第２スナ
ツプ２２の凹所２２ｄ内に不良鋲頭２４ｃを嵌装
し、通常の鋲作業と同じ要領で、油圧力によつ
て第１スナツプ２０を第２スナツプ２２に対して
圧接させる。すると、第１スナツプ２０の打抜き
ピン２０ｂの下端部が正規形状の鋲頭２４ａに当
接して、同鋲頭がドーナツツ状に打抜かれ、ドー
ナツツ状の環状体を残して鋲軸２４ｂ、不良鋲頭
２４ｃが一体に第２スナツプ２２の凹所２２ｄ内
に落下し、安全かつ迅速に、従つて低コストで不
良鋲が除去されるのである。その後、打抜かれた
ドーナツツ状の鋲頭残材を第１スナツプ２０の打
抜きピン２０ｂから除去し、次に第１及び第２ス
ナツプ２０及び２２を通常の鋲用スナツプと交
換して、再び新たな鋲の鋲作業が行なわれる。 When setting rivets using the rivet machine 10, ordinary rivet head forming snaps (not shown) are attached to both ends of the frame 12 in place of the first and second snaps 20 and 22. There is. and,
The shaft portion 24b of the rivet 24 having a predetermined rivet diameter is attached to the material 26a to be riveted.
and 26b, and the rivet head is press-formed by the rivet shaft portion protruding from the material to be riveted 26b. That is, the rivet head 24a and the end of the rivet shaft that will be molded into a new rivet head are positioned between the upper and lower snaps,
By operating the operation button 30, hydraulic pressure oil is supplied to the piston upper chamber of the hydraulic cylinder 16 by actuation of the hydraulic control device 32, and the piston shaft 1
8' and the upper snap are lowered together to perform the riveting operation. At this time, if the axis of the rivet shaft 24b and the upper and lower snap axes do not substantially match and the center line of the pressing force is significantly inclined with respect to the rivet shaft, the rivet shaft 24b
If the length of the rivet is too long or too short, a rivet head 24c of a defective shape as shown in FIG. 2 may sometimes be formed. A tack head 24 with such a defective shape
In case c, the desired riveting strength cannot be ensured, so it is necessary to remove the defective studs and perform riveting again with new studs. In this case, as shown in FIG.
A first snap 20 is installed on the 8' side, and a second snap 22 that cooperates with the other end of the frame 12 is attached.
2, the defective rivet head 24c is fitted into the recess 22d of the second snap 22, and the first snap 20 is tightened using hydraulic pressure in the same manner as normal rivet work. is pressed against the second snap 22. Then, the lower end of the punching pin 20b of the first snap 20 comes into contact with the regular-shaped rivet head 24a, and the rivet head is punched out into a donut shape, leaving behind a donut-shaped annular body and removing the rivet shaft 24b and the defective rivet head. 24c falls into the recess 22d of the second snap 22, and the defective studs are removed safely, quickly, and at low cost. Thereafter, the punched donut-shaped rivet head residue is removed from the punching pin 20b of the first snap 20, and then the first and second snaps 20 and 22 are replaced with regular rivet snaps, and a new one is installed again. The rivet work is done.
（考案の効果）
既に述べたように、本考案によれば、不良鋲の
除去が安全かつ迅速に、従つて低コストで行なわ
れる。又、不良鋲の除去後、第１スナツプに残存
するドーナツツ状の鋲頭残材を取外す場合に、第
１スナツプの打抜ピンがテーパピン状をなしてい
るので、鋲頭残材を例えばプライヤで挾持して廻
動させることにより、極めて容易にかつ迅速に除
去することができる利点がある。(Effects of the Invention) As already mentioned, according to the present invention, defective rivets can be removed safely and quickly, and therefore at low cost. In addition, when removing the donut-shaped remaining rivet head material remaining on the first snap after removing the defective rivet, the punching pin of the first snap has a tapered pin shape, so the remaining rivet head material can be removed using pliers, for example. By holding and rotating it, there is an advantage that it can be removed extremely easily and quickly.
第１図は本考案の一実施例を示す全体的側面
図、第２図は第１図の要部を拡大して示した側断
面図、第３図は第２図の−線に沿う断面図で
ある。
１０……鋲機、１２……フレーム、１６……
油圧シリンダ、１８……ピストン、２０……第１
スナツプ、２２……第２スナツプ。
Fig. 1 is an overall side view showing an embodiment of the present invention, Fig. 2 is an enlarged side sectional view of the main part of Fig. 1, and Fig. 3 is a cross section taken along the - line in Fig. 2. It is a diagram. 10...tack machine, 12...frame, 16...
Hydraulic cylinder, 18...piston, 20...first
Snap, 22...Second snap.
Claims (1)
の鋲軸の外径より僅かに小さく、上記端部から遠
ざかるに従がい漸増する外径を有するテーパピン
状の打抜きピンを具えた第１スナツプと、上記第
１スナツプの小径端部に対向する端部に不良形状
の成形鋲頭を収容する凹所を具えた第２スナツプ
とを具備し、上記第１及び第２スナツプの一方
を、大体コ字状をなす鋲機フレームの一端に着
脱自在に装着すると共に、他方のスナツプを上記
フレームの他端に装架された油圧シリンダのピス
トン軸端部に着脱自在に装着してなることを特徴
とする不良鋲抜取装置。 A punched-out pin in the form of a tapered pin, the outer diameter of the end of which comes into contact with the regular-shaped rivet head is slightly smaller than the outer diameter of the rivet shaft after the rivet has been tacked, and the outer diameter gradually increases as it moves away from the end. a second snap having a recess for accommodating a malformed rivet head at an end opposite to the small diameter end of the first snap; , is detachably attached to one end of the riveting machine frame which is approximately U-shaped, and the other snap is detachably attached to the end of the piston shaft of a hydraulic cylinder mounted on the other end of the frame. A defective tack extractor featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15688985U JPH0331467Y2 (en) | 1985-10-14 | 1985-10-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15688985U JPH0331467Y2 (en) | 1985-10-14 | 1985-10-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6267634U JPS6267634U (en) | 1987-04-27 |
| JPH0331467Y2 true JPH0331467Y2 (en) | 1991-07-04 |
Family
ID=31078927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15688985U Expired JPH0331467Y2 (en) | 1985-10-14 | 1985-10-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0331467Y2 (en) |
-
1985
- 1985-10-14 JP JP15688985U patent/JPH0331467Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6267634U (en) | 1987-04-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1009560B1 (en) | Punch rivet, riveted joints produced with it, riveting tool and method of producing a riveted joint | |
| JP4114908B2 (en) | Blind fasteners | |
| US8087333B2 (en) | Method for press punching a hole in sheet metal and press die | |
| JP5300027B2 (en) | Fixing method of pierce nut | |
| US7980800B2 (en) | Blind fastener and method of removing it from a workpiece | |
| US4146118A (en) | Brake shoe assembly | |
| CA2778104A1 (en) | Clinch pin fastener | |
| JPH0331467Y2 (en) | ||
| US6568062B1 (en) | Methods of removing self-piercing rivets set into a workpiece and devices for implementing the methods | |
| JPH0331469Y2 (en) | ||
| JPH0331468Y2 (en) | ||
| JPS63266206A (en) | Sheet with connector | |
| JPH0534829Y2 (en) | ||
| JPH0534830Y2 (en) | ||
| US4114217A (en) | Die assembly | |
| JPH0331466Y2 (en) | ||
| ZA200507051B (en) | Blind fastener and method of removing it from a workpiece | |
| JPS6015932Y2 (en) | rivets | |
| JPH045266Y2 (en) | ||
| JP2555330B2 (en) | Daisetsu | |
| JPH032351Y2 (en) | ||
| JPH0331465Y2 (en) | ||
| US2991681A (en) | Tubular rivet having frangible tool gripping portion | |
| GB2343725A (en) | Pin for pin and collar fastener | |
| JPS5850145A (en) | Method and device for riveting |