JPH0466266A - Jig for cutting sprue in joint - Google Patents
Jig for cutting sprue in jointInfo
- Publication number
- JPH0466266A JPH0466266A JP17928490A JP17928490A JPH0466266A JP H0466266 A JPH0466266 A JP H0466266A JP 17928490 A JP17928490 A JP 17928490A JP 17928490 A JP17928490 A JP 17928490A JP H0466266 A JPH0466266 A JP H0466266A
- Authority
- JP
- Japan
- Prior art keywords
- sprue
- blade
- pipe joint
- joint
- edge
- 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
- 238000005520 cutting process Methods 0.000 title claims abstract description 40
- 230000000630 rising effect Effects 0.000 claims description 10
- 239000000428 dust Substances 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 3
- 208000015943 Coeliac disease Diseases 0.000 description 70
- 238000005266 casting Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Shearing Machines (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
- Punching Or Piercing (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は継手の湯口除去治具に関し、その目的は管継
手の製品化過程において継手端部に残存する湯口を瞬時
にして切断できる継゛手の湯口切断治具の提供にある。[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a sprue removal jig for a joint, and its purpose is to remove sprues remaining at the end of the joint in an instant during the process of manufacturing the pipe joint. Provides a hand sprue cutting jig.
（従来の技術およびその課題）
管継手（金属製）の鋳造は溶融金属を鋳型内に流しこん
で行なわれるが、鋳造後には管継手に鋳型の、湯を注ぎ
込む口の形状（湯口）が残る。(Conventional technology and its problems) Pipe fittings (made of metal) are cast by pouring molten metal into a mold, but after casting, the shape of the opening for pouring hot water (sprue) of the mold remains in the pipe fitting. .
鋳造に際しては湯口が管継手の一端部の一部に生じるか
、鋳造後には湯口は不要な部分であるから除去する必要
がある。During casting, a sprue is formed at a part of one end of the pipe joint, or after casting, the sprue is an unnecessary part and must be removed.
従来、この湯口の除去は主に研削盤を用いての研削によ
ってなされていたが、研削盤で一つの管継手の湯口を除
き終えるには相当な時間が係る上、作業者は安全メガネ
をかけ、口にはマスクをする必要があり、研削盤の操作
も操作ペダルを加減して踏み続けなければならず作業の
しにくいものであった。Conventionally, this sprue removal was mainly done by grinding using a grinder, but it took a considerable amount of time to remove the sprue from a single pipe joint using a grinder, and the worker had to wear safety goggles. It was necessary to wear a mask over the mouth, and the operation of the grinding machine was difficult because the operator had to keep pressing the operating pedal.
また、周囲に引火物があると研削装置と管継手との接触
部分からの火花がこれに引火する虞もあり安全性におい
ても問題があった。Furthermore, if there is a flammable substance in the vicinity, there is a risk that sparks from the contact area between the grinding device and the pipe joint will ignite it, which poses a safety problem.
さらに研削作業中には研削屑が粉塵となって飛散するの
で、大型の集塵装置で粉塵を回収するようにしていたが
、粉塵の発生量が多いため集塵装置ではその全てを回収
しきれず、この未回収の粉塵が近隣の民家の屋根等に堆
積、酸化するといった公害を引き起こしていた。Furthermore, during grinding work, grinding debris becomes dust and is scattered, so a large dust collector was used to collect the dust, but due to the amount of dust generated, the dust collector was unable to collect all of it. This uncollected dust accumulated on the roofs of nearby houses and caused oxidation, causing pollution.
（課題を解決するための手段）
この発明は、プレス装置のラムに取付けられる上刃と、
盤板に設置される治具本体とからなり、上刃の表面は凹
状の曲面とされ、治具本体はフレームと円筒状部材と下
刃とからなり、フレームは平板状の台部とこの台部上に
相互平行に立設され且つ上方に向かって傾斜面とされた
立ち上げ部とこの立ち上げ部の下部間に前記傾斜面と同
様に傾斜して形成された継手端縁当接部とを有してなり
、前記立ち上げ部と継手端縁当接部には管継手端縁の抜
き勾配に対応する勾配が形成され、円筒状部材は前記立
ち上げ部間の前部に設けられ下刃取付部を有してなり、
下刃は前記下刃取付部に取付けられこの下刃の表面は前
記上刃の表面に対応する凸形状とされてなる継手の湯口
切断治具によって上記課題を解決する。(Means for Solving the Problems) The present invention includes an upper blade attached to a ram of a press device;
It consists of a jig body installed on a board, the upper blade has a concave curved surface, the jig body consists of a frame, a cylindrical member, and a lower blade, and the frame has a flat plate-shaped base and this base. a raised part that is erected parallel to each other on the parts and has an upwardly inclined surface, and a joint edge abutting part that is sloped in the same manner as the inclined surface between the lower part of the raised part; A slope corresponding to the draft angle of the pipe joint end is formed at the raised portion and the joint edge abutting portion, and the cylindrical member is provided at the front between the raised portions, and It has a blade attachment part,
The above problem is solved by a sprue cutting jig of a joint in which a lower blade is attached to the lower blade attachment part, and the surface of the lower blade has a convex shape corresponding to the surface of the upper blade.
（作用）
湯口切断前の管継手をその湯口かある方の端縁から治具
本体の円筒状部材に挿通し、この端縁の湯口のない部分
を治具本体の立ち上げ部の前面および継手端縁当接部に
当接させ、且つ前記端縁の湯口の下縁を下刃上に載せる
。(Function) Insert the pipe fitting before sprue cutting into the cylindrical member of the jig main body from the edge where the sprue is, and insert the part of this edge without the sprue into the front of the upright part of the jig main body and the joint. The blade is brought into contact with the edge abutting portion, and the lower edge of the sprue of the edge is placed on the lower blade.
管継手の端縁には抜き一勾配が形成されており、この管
継手が当接する立ち上げ部と継手端縁当接部にはこの抜
き勾配分に相当する勾配が形成されているので、管継手
がフレームに密接されることになり、従って湯口を含む
管継手端縁の一部のみが下刃上から前方へ突出されるこ
ととなる。A draft slope is formed at the edge of the pipe joint, and a slope corresponding to this draft slope is formed at the rising part where the pipe joint contacts and the joint end contact part, so that the pipe The joint is brought into close contact with the frame, so that only a portion of the end edge of the pipe joint, including the sprue, protrudes forward from above the lower blade.
プレス機械を駆動させて上刃の取付けられたラムを下降
させる。The press machine is driven to lower the ram with the upper blade attached.
管継手の湯口は下降してきた上刃と下刃取付部に固定さ
れた下刃とによって切断される。The sprue of the pipe joint is cut by the descending upper blade and the lower blade fixed to the lower blade attachment part.
この際には上刃と下刃の表面が曲面状とされているから
湯口を切断するのみでなく、湯口の両端部分（すなわち
湯口のみを切断したならば残る角張った部分）もか切断
される。At this time, since the surfaces of the upper and lower blades are curved, they not only cut the sprue, but also both ends of the sprue (that is, the angular parts that would remain if only the sprue was cut). .
また管継手端縁の下半部は傾斜面とされたフレームの前
面に密接されるので、管継手がその分傾斜した状態とさ
れ、この結果、管継手の端縁の上部が傾いた状態で下刃
から前方へ突出される。In addition, since the lower half of the end edge of the pipe joint is brought into close contact with the front surface of the frame, which is an inclined surface, the pipe joint is inclined accordingly, and as a result, the upper part of the end edge of the pipe joint is inclined. Projected forward from the lower blade.
従って、切断された管継手の端縁には切断前と同様の勾
配が形成されることになる。Therefore, the same slope as before cutting is formed at the edge of the cut pipe joint.
（実施例）
以下、この発明に係る継手の湯口切断治具の実施例を図
面に基づき説明する。(Example) Hereinafter, an example of a sprue cutting jig for a joint according to the present invention will be described based on the drawings.
第１図乃至第３図には湯口切断治具が示され、この湯口
切断治具は上刃（１）と治具本体（２）とからなる。A sprue cutting jig is shown in FIGS. 1 to 3, and this sprue cutting jig consists of an upper blade (1) and a jig main body (2).
上刃（１）は上刃取付具（３）に取付けられている。The upper blade (1) is attached to an upper blade fixture (3).
上刃取付具（３）は第５図に示すようにプレス装置ａ３
のラムαΦに取付けられる。The upper blade fixture (3) is attached to the press device a3 as shown in Figure 5.
is installed on the ram αΦ.
この上刃取付具（３）の下部には内方へ切欠された上刃
取付部（３ａ）が形成され、この上刃取付部（３ａ）に
上刃（１）が取付けられる。An inwardly cut upper blade attachment part (3a) is formed in the lower part of the upper blade attachment (3), and the upper blade (1) is attached to this upper blade attachment part (3a).
上刃（１）は頭が皿状のビス（４）を上刃（１）、上刃
取付具（３）に貫通させて取付けられる。The upper blade (1) is attached by passing a screw (4) with a plate-shaped head through the upper blade (1) and the upper blade fitting (3).
上刃（１）は硬度が高い工具で、構造は第４図（Ａ）に
示すように、表面（ｉａ）か凹状の曲面に形成され表面
（１ａ）の下縁（ｌｂ）が上方へ凸の円弧状とされてい
る。The upper blade (1) is a highly hard tool, and as shown in Figure 4 (A), its structure is that the surface (ia) is formed into a concave curved surface, and the lower edge (lb) of the surface (1a) is convex upward. It is said to be arc-shaped.
上刃（１）の表面（１ａ）が凹状の曲面に形成されてい
る理由は、管継手は後述するように治具本体（２）に傾
斜状に位置決めされるので、湯口を切断した際に切断方
向（略鉛直方向）に対して管継手が傾斜している分、湯
口の切断跡の両端に角張った部分が残るのを防ぐためで
ある。The reason why the surface (1a) of the upper blade (1) is formed into a concave curved surface is because the pipe joint is positioned obliquely on the jig body (2) as described later, so when cutting the sprue, This is to prevent angular parts from remaining at both ends of the cut mark of the sprue, since the pipe joint is inclined with respect to the cutting direction (approximately vertical direction).
また表面（ｌａ）の下ｉｉｉ’ （ｌｂ）が上方へ凸の
円弧状に切り欠かれている理由は、前記下ｉｔ （ｌｂ
）を管継手の外周面の形状になるべく合わせた方が円滑
な切断ができるからである。The reason why the lower part iii' (lb) of the surface (la) is cut out in an upwardly convex arc shape is because the lower part iii' (lb) of the surface (la)
) to match the shape of the outer peripheral surface of the pipe joint as much as possible to ensure smooth cutting.
また上刃（１）の切刃面（ｌｃ）は刃裏へ向けて高くな
るよう傾斜されている。Further, the cutting surface (lc) of the upper blade (1) is inclined so as to be higher toward the back of the blade.
治具本体（２）は金属製でフレーム（５）と円筒状部材
（６）と下刃（７）とからなる。The jig main body (2) is made of metal and consists of a frame (5), a cylindrical member (6), and a lower blade (7).
フレーム（５）は平板状の台部（８）とこの台部（８）
上の両端部に立設された立ち上げ部（９）とこの立ち上
げ部（９）の下部間の継手端縁当接部（１０）とを有し
てなる。The frame (5) has a flat plate-like base part (8) and this base part (8).
It has a raised part (9) erected at both ends of the upper part and a joint edge abutting part (10) between the lower part of the raised part (9).
立ち上げ部（９）の前面（９ａ）は上方へ向かって傾斜
面とされている。The front surface (9a) of the rising portion (9) is an upwardly inclined surface.
この傾斜角度はｌ／１０、すなわち管継手の端縁の抜き
勾配（管継手の鋳造時には鋳型から抜き易くするため端
縁に抜き勾配が形成される）に等しし１角度とされる。This angle of inclination is 1/10, that is, equal to the draft angle of the end edge of the pipe joint (a draft angle is formed on the end edge during casting of the pipe joint to facilitate removal from the mold), and is one angle.
継手端縁当接部αＯ）も前記立ち上げ部（９）の前面（
９ａ）と同様の角度の傾斜面とされている。The joint edge abutting part αO) is also connected to the front surface of the raised part (9) (
The inclined surface has the same angle as 9a).
そして、立ち上げ部前面（９ａ）および継手端縁当接部
αωには更に、内から外へ向かって高くなる勾配（９ｂ
）、（１０ａ）が形成される。The front surface of the rising part (9a) and the joint edge abutting part αω have a slope (9b) that increases from the inside to the outside.
), (10a) are formed.
このように勾配（９ｂ）、（ｌｏａ）が形成される理由
は湯口切断の際に管継手端縁が治具本体（２）に密接す
べく管継手端縁の前記抜き勾配に対応させるためである
。The reason why the slopes (9b) and (loa) are formed in this way is to correspond to the draft angle of the pipe joint edge in order to bring the pipe joint edge into close contact with the jig body (2) during sprue cutting. be.
また立ち上げ部前面（９ａ）、継手端縁当接部００）自
体を前述の如く傾斜させる理由は、湯口切断後の管継手
端縁にも切断前と同様の抜き勾配を残すためである（も
し傾斜させなければ湯口切断後の端縁に抜き勾配が残ら
ないことになり、管継手のその後の加工に支障を来すか
らである）。The reason why the front surface of the rising part (9a) and the joint end contact part 00) are inclined as described above is to leave the same draft angle on the pipe joint end after cutting the sprue as before cutting. If the sprue is not tilted, no draft will remain on the edge after the sprue is cut, which will impede the subsequent processing of the pipe joint.)
前記継手端縁当接部００）や前面（９ａ）には管継手の
端縁か接するわけであるか、この際にこの管継手端縁に
鋳バリ等かあっても、これによって適正な接触が妨げら
れないようにフレーム（５）の管継手との接触面にニゲ
やヌスミを形成してもよい。The end of the pipe joint comes into contact with the joint end contact portion 00) and the front surface (9a), and even if there is flash or the like on the end of the pipe joint, this will ensure proper contact. In order to prevent this from being obstructed, scratches or scratches may be formed on the contact surface of the frame (5) with the pipe joint.
これらのことによって、管継手を治具本体（２）に当接
させた場合、管継手の抜き勾配のある端縁がフレーム（
５）の立ち上げ部（９）と継手端縁当接部α０）に密接
することになる。Due to these, when the pipe joint is brought into contact with the jig body (2), the draft edge of the pipe joint will be in contact with the frame (
It comes into close contact with the rising part (9) of 5) and the joint edge abutting part α0).
（１１１は立ち上げ部（９）、（９）の上部間にボルト
によって取付けられた架設杆である。(111 is a construction rod attached with bolts between the upper parts of the rising parts (9), (9).
この架設杆σＢの下縁中央部は円弧状あるいは７字状に
切り欠かれている。The center portion of the lower edge of this erection rod σB is cut out in an arc shape or a figure 7 shape.
円筒状部材（６）は管継手か湯口の切断時の応力に耐え
るように設けられた部材であり、フレーム（５）の前記
立ち上げ部（９） （９）の前縁と継手端縁当接部００
）とに接する状態でフレーム（５）に溶着され、その直
径は湯口切断の対象となる管継手の内径よりやや小さく
されている。The cylindrical member (6) is a member provided to withstand stress when the pipe joint or sprue is cut, and is connected to the front edge of the raised portion (9) of the frame (5) and the end edge of the joint. Contact part 00
), and its diameter is slightly smaller than the inner diameter of the pipe joint to be sprue cut.
この円筒状部材（６）の内側は切り欠かれて段部とされ
ており、この段部が下刃取付部（６ａ）とされている。The inside of this cylindrical member (6) is cut out to form a stepped portion, and this stepped portion serves as a lower blade attachment portion (6a).
この下刃取付部（６ａ）に下刃（７）が取付けられる。A lower blade (7) is attached to this lower blade attachment portion (6a).
下刃（７）は硬度が高い工具で、前記下刃取付部（６ａ
）ニ上刃（１）と同様、ビス（４）によって取付けられ
、第４図（Ｂ）に示すように表面（７ａ）が前記上刃（
１）の表面（１ａ）に対応する形状、すなわち、外方へ
凸の曲面状に形成されている。The lower blade (7) is a tool with high hardness, and the lower blade attachment part (6a
) is attached with screws (4) like the upper blade (1), and as shown in FIG. 4(B), the surface (7a) is attached to the upper blade (
It is formed in a shape corresponding to the surface (1a) of 1), that is, an outwardly convex curved surface.
下刃（７）の表面（７ａ）の上縁（７ｂ）は上方へ凸の
円弧状に形成されている。The upper edge (7b) of the surface (7a) of the lower blade (7) is formed in an upwardly convex arc shape.
またこの下刃（７）の切刃面（７ａ）は刃裏へ向けて低
くなるよう傾斜されている。Further, the cutting surface (7a) of this lower blade (7) is inclined so as to be lower toward the back of the blade.
円筒状部材（６）の後部には切断後の湯口を受ける突片
α２が設けられ、その側部は前記立ち上げ部（９）の内
面に溶着されている。A protrusion α2 is provided at the rear of the cylindrical member (6) to receive the sprue after cutting, and its side portion is welded to the inner surface of the upright portion (9).
以上のようになる継手の湯口切断治具を用いて管継手の
湯口を切断する方法を説明する。A method of cutting the sprue of a pipe joint using the joint sprue cutting jig as described above will be explained.
ます上刃（１）の上刃取付具（３）を第５図示のような
プレス装置σ３のラムａΦに取付け、プレス装置α３の
盤板α９上に治具本体（２）を取付ける。The upper blade fixture (3) of the upper cutter (1) is attached to the ram aΦ of the press apparatus σ3 as shown in FIG. 5, and the jig main body (2) is attached on the plate α9 of the press apparatus α3.
治具本体（２）を取付けるには、この治具本体（２）の
台部（８）を盤板ａ９上のクランプ具ａｅａθで締め付
は固定させる。To attach the jig main body (2), the base part (8) of the jig main body (2) is tightened and fixed with a clamp tool aeaθ on the board a9.
次に第６図示のように湯口α３のある管継手αのを手で
円筒状部材（６）に通す。Next, as shown in Figure 6, the pipe joint α with the sprue α3 is passed through the cylindrical member (6) by hand.
この場合、湯口αｅは管継手αηの一端縁の一部に生じ
ており、この場口止のある端縁の側から通す。In this case, the sprue αe is formed on a part of one end edge of the pipe joint αη, and the sprue is passed through from the end edge side where the sprue stop is located.
そして湯口αＳの端部より若干内面側の部分が下刃（７
）の上縁（７ｂ）上に載るように管継手σのを治具本体
（２）にセットする。Then, the lower blade (7
) Set the pipe fitting σ in the jig body (2) so that it rests on the upper edge (7b) of the pipe.
このときには管継手面の湯口αｅのある側の端縁の下半
縁を立ち上げ部（９）の前面（９ａ）および継手端縁当
接部（ＩＩＸＩの抜き勾配（９ｂ） （１０ａ）に当接
させ、管継手ａ’ｒ＋の後部は手で持っておく。At this time, the lower half edge of the end of the pipe joint surface on the side where the sprue αe is located is brought into contact with the front surface (9a) of the rising part (9) and the joint end contact part (draft angle (9b) (10a) of IIXI). and hold the rear part of the fitting a'r+ with your hand.
この状態で管継手σηは、その端縁が治具本体（２）の
立ち上げ部（９）と継手端縁当接部α■に密接すること
によって位置決めされ、また湯口αｅは管継手端縁より
前方へ突出しているので下刃（７）から前方へ突出する
こととなる（第７図（Ａ） 、（Ｂ）参照）。In this state, the pipe fitting ση is positioned by its edge coming into close contact with the rising part (9) of the jig body (2) and the joint edge abutting part α■, and the sprue αe is positioned at the pipe fitting edge. Since it protrudes further forward, it protrudes forward from the lower blade (7) (see Figures 7 (A) and (B)).
尚、この実施例では管継手の後部は手で持って支持され
ているが、チャッキング装置或いはロボットによって把
持させることとしてもよい。In this embodiment, the rear part of the pipe joint is supported by hand, but it may be held by a chucking device or a robot.
管継手α力のセット後にプレス装置α３を作動させる。After setting the pipe joint α force, press device α3 is operated.
この実施例ではプレス装置α３としてクランクプレスが
用いられており、そのフットペダルａ９を踏むと、モー
タ■によるフライホイール（２１）の回転がクラッチを
介してクランク（２３）に伝達され、このクランク（２
３）に連接棒を介して取付けられている前記ラムαΦが
下降する。In this embodiment, a crank press is used as the press device α3, and when the foot pedal a9 is stepped on, the rotation of the flywheel (21) by the motor (2) is transmitted to the crank (23) via the clutch. 2
3) The ram αΦ attached via a connecting rod descends.
ラムＩの下降によって上刃（１）の下縁（１ｂ）が管継
手（１７１の外周面に接し、上刃（１）がさらに瞬時に
下降することによって上刃（１）の下縁（１ｂ）と下刃
（７）の上縁（７ｂ）との間で切断され、これによって
管継手（１７）の上刃（１）と下刃（７）とで挟まれる
部分、すなわち湯口０８を含む部分か切断される。As the ram I descends, the lower edge (1b) of the upper blade (1) comes into contact with the outer peripheral surface of the pipe joint (171), and as the upper blade (1) further descends instantaneously, the lower edge (1b) of the upper blade (1) ) and the upper edge (7b) of the lower blade (7), thereby including the part sandwiched between the upper blade (1) and the lower blade (7) of the pipe joint (17), that is, the sprue 08. parts are cut off.
切断された湯口（１８は突片σ２上に落下する（第７図
（Ｃ）参照）。The cut sprue (18) falls onto the projection σ2 (see FIG. 7(C)).
尚、本実施例ではラムａ０の下降時に上刃（１）が下刃
（７）の下部付近まで下降するようにプレス装置Ｇ３の
作動が設定される。In this embodiment, the operation of the press device G3 is set so that the upper blade (1) descends to near the bottom of the lower blade (7) when the ram a0 descends.
フレーム（５）の管継手αりの端縁が当接する部位は前
述の如く傾斜面とされているため、真っ直ぐ下降してき
た上刃（１）に対して管継手ａでが傾いていることにな
り、もし上下の刃の表面（１ａ）、（７ａ）が平坦であ
れば湯口切断後の切端部に角張った部分が生じる虞かあ
るが、上刃（１）下刃（７）の表面の形状を前述のよう
に曲面状としたので湯口の両端近傍をやや深く切断する
こととなり、上記のような角張った部分は残らない。As mentioned above, the part of the frame (5) where the edge of the pipe joint α comes into contact is an inclined surface, so the pipe joint a is inclined with respect to the upper blade (1) that is descending straight. If the surfaces (1a) and (7a) of the upper and lower blades are flat, there is a risk that an angular part will appear at the incisal end after sprue cutting, but if the surfaces of the upper and lower blades (1a) and (7a) are flat, Since the shape was curved as described above, the sprue was cut somewhat deeply near both ends, and no angular portions were left as described above.
第８図（Ａ） 、（Ｂ）には湯口切断後の管継手αηか
示されているが、その端面（端面近傍の外面も含む）に
は湯口が全く残っていない平滑面となっており唯、湯口
切断跡の切断縁（２４）が残るのみである（この切断縁
（２４）は管継手の機能面では問題ない）。Figures 8 (A) and (B) show the pipe joint αη after the sprue has been cut, but its end face (including the outer surface near the end face) is a smooth surface with no sprue left at all. However, only the cut edge (24) of the sprue cut remains (this cut edge (24) poses no problem in terms of the functionality of the pipe joint).
尚、管継手の鋳造時にはその内面にも湯口が生ずるが、
内面の湯口は敢えて除去せずとも、第８図（Ｃ）に示す
ように管継手αり内部にネジ切り加工をする際などに切
削除去されることとなるため問題ない。Furthermore, when casting a pipe joint, a sprue is formed on its inner surface.
Even if the sprue on the inner surface is not removed, there is no problem because it will be removed when threading the inside of the pipe joint, as shown in FIG. 8(C).
第９図（Ａ） （Ｂ）には上刃の変更例（下刃（７）は
そのまま）か示されている。FIGS. 9(A) and 9(B) show examples of changes in the upper blade (the lower blade (7) remains unchanged).
この上刃（２５）は切刃面（２５ａ）の下縁に２段の切
刃（第１刃（２６）、第２刃（２７） ）が形成されて
なり、第１刃（２６）は表面の両端部に、第２刃（２７
）は中央部に形成されている。This upper blade (25) has two cutting blades (first blade (26), second blade (27)) formed on the lower edge of the cutting blade surface (25a), and the first blade (26) is A second blade (27
) is formed in the center.
第１刃（２６）と第２刃（２７）の上下方向の距離は継
手の肉厚の約半分とされている。The vertical distance between the first blade (26) and the second blade (27) is approximately half the thickness of the joint.
また第９図ＣＢ）に示すように第１刃（２６）の表面（
２５ａ）と切刃面とがなす角度は鋭角とされ、第２刃（
２７）はそれより大きな角度とされている。In addition, as shown in Figure 9 CB), the surface of the first blade (26) (
The angle between the second blade (25a) and the cutting edge surface is an acute angle, and the second blade (
27) is considered to be a larger angle.
尚、表面（２５ａ）は前述の実施例と同様、凹状の曲面
とされている。Note that the surface (25a) is a concave curved surface as in the above embodiment.
この上刃（２５）をラムαΦに取付けて湯口を切断すれ
ば、先に第１刃（２６）が管継手Ｇ′７１に接する結果
、湯口αｅの両端部分が先に切断され、この第１刃（２
６）か継手の肉厚の約半分の距離まで下降した後、第２
刃（２７）か管継手αのに当接して湯口α＆を切断する
こととなる。If this upper blade (25) is attached to the ram αΦ to cut the sprue, the first blade (26) comes into contact with the pipe joint G'71 first, and as a result, both ends of the sprue αe are cut first. Blade (2
6) After descending to a distance of about half the thickness of the joint, the second
The blade (27) comes into contact with the pipe joint α and cuts the sprue α&.
この上刃（２５）で湯口０秒を切断すれば、前記のよう
な湯口切断跡の切断縁（２４）が残らず切断後の外観に
優れ、また切れ味もより良い。If the upper blade (25) is used to cut the sprue at 0 seconds, the cut edge (24) of the sprue cut will not remain as described above, and the appearance after cutting will be excellent and the sharpness will also be better.
第１０図には湯口切断作業において安全性を向上させる
ため、プレス装置Ｇ３の作業空間前面に網状の安全カバ
ー（２８）を設けた例が示されている。FIG. 10 shows an example in which a net-like safety cover (28) is provided in front of the work space of the press G3 in order to improve safety in the sprue cutting operation.
この例によれば切断時に切断された湯口０８が作業者の
方へ飛散するのをこの安全カバー（２８）が防ぎ、また
作業者が何らかのはずみで指を下刃（７）上に位置させ
てしまうことに起因する事故が防げる。According to this example, the safety cover (28) prevents the cut sprue 08 from scattering toward the worker during cutting, and also prevents the worker from positioning his finger on the lower blade (7) due to some impetus. Accidents caused by storage can be prevented.
以上の実施例において、プレス装置としてクランクプレ
スが使用されているが、油圧プレス等、前記以外のプレ
ス装置を用いてもよい。In the above embodiments, a crank press is used as the press device, but other press devices such as a hydraulic press may also be used.
（発明の効果）
この発明は、プレス装置のラムに取付けられる上刃と、
盤仮に設置される治具本体とからなり、上刃の表面は凹
状の曲面とされ、治具本体はフレームと円筒状部材と下
刃とからなり、フレームは平板状の台部とこの台部上に
相互平行に立設され且つ上方に向かって傾斜面とされた
立ち上げ部とこの立ち上げ部の下部間に前記傾斜面と同
様に傾斜して形成された継手端縁当接部とを有してなり
、前記立ち上げ部と継手端縁当接部には管継手端縁の抜
き勾配に対応する勾配か形成され、円筒状部材は前記立
ち上げ部間の前部に設けられ下刃取付部を有してなり、
下刃は前記下刃取付部に取付けられこの下刃の表面は前
記上刃の表面に対応する凸形状とされてなる継手の湯口
切断治具であるから以下の効果を奏する。(Effect of the invention) The present invention has an upper blade attached to a ram of a press device;
It consists of a jig body that is installed temporarily on a board, the surface of the upper blade is a concave curved surface, the jig body consists of a frame, a cylindrical member, and a lower blade, and the frame has a flat plate-shaped base and this base. A raised part that is erected parallel to each other above and has an upwardly inclined surface, and a joint edge abutting part that is sloped in the same manner as the inclined surface between the lower part of this raised part. A slope corresponding to the draft angle of the pipe joint end is formed at the raised portion and the joint edge abutting portion, and the cylindrical member is provided at the front portion between the raised portions and has a lower blade. It has a mounting part,
The lower blade is attached to the lower blade attachment portion, and the surface of the lower blade is formed into a convex shape corresponding to the surface of the upper blade. Since the lower blade is a sprue cutting jig for a joint, the following effects are achieved.
すなわち、湯口切断治具をプレス装置に取付けてこのプ
レス装置のフットペダルを踏む等の簡易な操作で上刃が
下降し、この上刃と下刃による切断によって湯口を切断
できるので、面倒な作業をすることなく安全であり、切
断屑か粉塵とはならないので粉塵飛散による公害の虞が
なく、しかも湯口の切断か瞬時に行える。In other words, the upper blade can be lowered by a simple operation such as attaching the sprue cutting jig to a press device and stepping on the foot pedal of the press device, and the sprue can be cut by the upper and lower blades, which eliminates troublesome work. It is safe and does not produce cutting chips or dust, so there is no risk of pollution due to flying dust, and sprue cutting can be done instantly.
管継手を治具本体のフレームに位置決めし、円筒状部材
の上部に設けられた下刃取付部に取付けられた下刃と、
ラムに取付けられた上刃との間で湯口を切断する構造と
したので、管継手の外周から中心へ向けて湯口が切断さ
れることになり、従って管継手の外周面寄りの端縁に湯
口が残存することがない。The pipe joint is positioned on the frame of the jig body, and a lower blade is attached to a lower blade attachment part provided at the top of the cylindrical member;
Since the structure is such that the sprue is cut between the upper blade attached to the ram, the sprue is cut from the outer periphery of the pipe joint toward the center. will not remain.
またフレームの立ち上げ部の前面と継手端縁当接部を傾
斜させ且つこの部位に勾配が形成され、ここに管継手端
縁（抜き勾配が形成された）を当接させるから、管継手
を治具本体に確実に位置決めできると共に湯口の切断後
の端縁にも抜き勾配を形成することができ、しかも上下
の刃が外方へ凸の曲面状に形成されているので湯口の両
端部分をより深く切断でき、従って湯口切断跡の両端部
分に角張った部分が残らない。In addition, the front surface of the raised part of the frame and the joint end contact part are inclined, and a slope is formed in this part, and the pipe joint end edge (with a draft angle formed) is brought into contact with this part, so the pipe joint Not only can it be positioned securely on the jig body, but also a draft angle can be formed on the edge of the sprue after cutting.Furthermore, since the upper and lower blades are formed with outwardly convex curved surfaces, both ends of the sprue can be easily positioned. Deeper cuts can be made, so no angular parts remain at both ends of the sprue cut.
第１図はこの発明に係る継手の湯口切断治具の正面図、
第２図は同上側面図、第３図は同上背面図、第４図（Ａ
）は上刃の斜視図、第４図（Ｂ）は下刃の斜視図、第５
図はこの発明に係る継手の湯口切断治具をプレス装置に
取付けた状態の正面図、第６図は同上継手の湯口切断治
具の使用状態を示す斜視図、第７図（Ａ） 、 （Ｂ）
、（Ｃ）は同上継手の湯口切断治具の使用状態を示す
部分断面説明図、第８図（Ａ）は湯口切断後の管継手の
端縁の正面図、第８図（Ｂ）は切断された湯口の平面図
、第８図（Ｃ）は湯口切断後の管継手の内面にネジ切り
加工をした状態の斜視図、第９図（Ａ）は上刃の変更例
の正面説明図、第９図（Ｂ）は同上側面図、第１０図は
プレス装置に安全カバーを取付けて継手の湯口切断治具
を設置した状態の正面図である。
（１）、（２５）・・・上刃 （１ａ）、（２５ａ）
・・・上刃の表面（ｌｂ）・・・下縁 （２）・
・・治具本体（３）・・・上刃取付具 （５）・・・
フレーム（６）・・・円筒状部材 （７）・・・下刃
（７ａ）・・・下刃の表面 （７ｂ）・・・土練（８）
・・・台部 （９）・・・立ち上げ部（９ａ）
−傾斜面 （９ｂ）、（１０ａ） −勾配ａＯ＋・
・・継手端縁当接部
α勾・・・ラム
（１３・・・プレス装置
（Ｎ ・
第
図
（Ａ）
（Ｂ）
ｂ
」
Ｑ３
Ｑ〕
第
図
（Ａ）
（Ｂ）
ゐ
第
図
（Ａ）
（Ｂ）
（Ｃ）
第
図FIG. 1 is a front view of a sprue cutting jig for a joint according to the present invention;
Figure 2 is a side view of the same as above, Figure 3 is a rear view of the same as above, Figure 4 (A
) is a perspective view of the upper blade, Figure 4 (B) is a perspective view of the lower blade, and Figure 5 is a perspective view of the lower blade.
The figure is a front view of the sprue cutting jig for the joint according to the present invention attached to a press device, FIG. 6 is a perspective view showing the state in which the sprue cutting jig for the joint is used, and FIGS. B)
, (C) is a partial cross-sectional explanatory diagram showing the state in which the sprue cutting jig for the above joint is used, FIG. 8 (A) is a front view of the edge of the pipe joint after sprue cutting, and FIG. 8 (B) is a cut FIG. 8(C) is a perspective view of the inner surface of the pipe joint after the sprue has been cut, and FIG. 9(A) is a front explanatory view of a modified example of the upper blade. FIG. 9(B) is a side view of the same as above, and FIG. 10 is a front view of the press device with a safety cover attached and a sprue cutting jig for the joint installed. (1), (25)... Upper blade (1a), (25a)
...Top blade surface (lb)...Lower edge (2)
・Jig body (3) ・Upper blade mount (5) ・・
Frame (6)...Cylindrical member (7)...Lower blade (7a)...Surface of the lower blade (7b)...Kneading soil (8)
... Base part (9) ... Standing part (9a)
- Inclined surface (9b), (10a) - Gradient aO+・
...Joint edge abutting part α slope...Ram (13...Press device (N. ) (B) (C) Figure
Claims (1)
設置される治具本体とからなり、上刃の表面は凹状の曲
面とされ、治具本体はフレームと円筒状部材と下刃とか
らなり、フレームは平板状の台部とこの台部上に相互平
行に立設され且つ上方に向かって傾斜面とされた立ち上
げ部とこの立ち上げ部の下部間に前記傾斜面と同様に傾
斜して形成された継手端縁当接部とを有してなり、前記
立ち上げ部と継手端縁当接部には管継手端縁の抜き勾配
に対応する勾配が形成され、円筒状部材は前記立ち上げ
部間の前部に設けられ下刃取付部を有してなり、下刃は
前記下刃取付部に取付けられこの下刃の表面は前記上刃
の表面に対応する凸形状とされてなる継手の湯口切断治
具。(1) Consists of an upper blade attached to the ram of the press device and a jig body installed on the board. The upper blade has a concave curved surface, and the jig body consists of a frame, a cylindrical member, and a lower blade. The frame consists of a flat plate-shaped platform, a rising section that is erected parallel to each other on this platform and has an upwardly inclined surface, and a surface between the lower part of this rising section that is similar to the above-mentioned inclined surface. a joint end abutting part formed at an angle, and a slope corresponding to the draft of the pipe joint end is formed in the raised part and the joint end abutting part, and the pipe joint has a cylindrical shape. The member has a lower blade attachment part provided in the front part between the raised parts, the lower blade is attached to the lower blade attachment part, and the surface of the lower blade has a convex shape corresponding to the surface of the upper blade. A sprue cutting jig for joints.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17928490A JPH0466266A (en) | 1990-07-05 | 1990-07-05 | Jig for cutting sprue in joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17928490A JPH0466266A (en) | 1990-07-05 | 1990-07-05 | Jig for cutting sprue in joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0466266A true JPH0466266A (en) | 1992-03-02 |
| JPH0571342B2 JPH0571342B2 (en) | 1993-10-07 |
Family
ID=16063142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17928490A Granted JPH0466266A (en) | 1990-07-05 | 1990-07-05 | Jig for cutting sprue in joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0466266A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109202049A (en) * | 2018-10-19 | 2019-01-15 | 马鞍山奥特佳机电有限公司 | A kind of automobile air conditioner compressor sound disk blank dead head device for excising and its application method |
-
1990
- 1990-07-05 JP JP17928490A patent/JPH0466266A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109202049A (en) * | 2018-10-19 | 2019-01-15 | 马鞍山奥特佳机电有限公司 | A kind of automobile air conditioner compressor sound disk blank dead head device for excising and its application method |
| CN109202049B (en) * | 2018-10-19 | 2024-05-28 | 马鞍山奥特佳机电有限公司 | Automobile air conditioner compressor dynamic and static disc blank riser cutting device and application method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0571342B2 (en) | 1993-10-07 |
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