JPH0114285B2 - - Google Patents
Info
- Publication number
- JPH0114285B2 JPH0114285B2 JP15089781A JP15089781A JPH0114285B2 JP H0114285 B2 JPH0114285 B2 JP H0114285B2 JP 15089781 A JP15089781 A JP 15089781A JP 15089781 A JP15089781 A JP 15089781A JP H0114285 B2 JPH0114285 B2 JP H0114285B2
- Authority
- JP
- Japan
- Prior art keywords
- rod
- lower support
- shaped body
- movable member
- quenching
- 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
- 238000010791 quenching Methods 0.000 claims description 18
- 230000000171 quenching effect Effects 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 description 10
- 239000012530 fluid Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005480 shot peening Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0075—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rods of limited length
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Heat Treatment Of Articles (AREA)
Description
本発明は棒状体の拘束焼入装置に関する。
トーシヨンバーなどのような棒状体に焼入処理
を施す場合には、自由状態のままで処理すると加
熱時および焼入時等に変形を伴い易く、製品品質
を所望レベルに維持するためには冷間での矯正工
程が不可欠である。このような問題点を解決する
ために、従来は丸棒状の被焼入物を回転加圧しな
がら焼入するローリングプレス焼入機が用いられ
ている。このものにおいては第1,2図に例示す
るように焼入液1中に設けられた架台2を備えて
いる。この架台2は一端が水平軸3を介して揺動
自在に支持されるとともに、他端に設けられた駆
動輪4がこれに偏心連結されたリンク5を介して
支持されており、駆動輪4を動力源6によつて回
転駆動することにより揺動運動をなすように構成
されている。上記架台2にはトーシヨンバーaを
回転加圧するための下側ローラ7と上側ローラ8
とが設けられており、下側ローラ7は動力源9に
よつて所定速度で回転駆動されるとともに、上側
ローラ8はシリンダ装置10により下側ローラ7
と接離自在に支持されている。また、搬送装置1
1は上面にトーシヨンバーaを支持するためのV
字状溝12が形成された本体13と、この本体1
3の前後両端部を支持する駆動輪14とを備えて
おり、これら駆動輪14を回転駆動して本体13
を円運動させることによりトーシヨンバーaを順
次前方に移動させるようになつている。
上述のように構成された従来装置においては、
トーシヨンバーaが上下両側ローラ8,7によつ
て回転加圧されるので圧痕を生じ易い。また、装
置の構造および動作が複雑で取扱いおよび保守に
手数を要する。さらに、ローラ7,8の位置など
の調節が不便であるため品種変更に際して段取り
に手数を要し、多種少量生産には不適である。ま
た、焼入タクトも遅い。しかも、後述するように
(第7図参照)熱処理に伴なう変形を充分に防止
することができないという難点がある。
本発明は上記事情のもとになされたもので、そ
の目的とするところは、上記従来装置に比し構造
が簡単で取扱いが容易であるとともに品質レベル
を大幅に向上することが可能な棒状体の拘束焼入
装置を提供することにある。
以下、本発明を図示の一実施例について説明す
る。第3図ないし第6図において、焼入液10を
収容した液槽11の上方には固定部材12が設け
られている。可動部材13は、固定部材12を上
下方向に摺動自在に貫通する支柱14と、この支
柱14の上下両端部に取付けられた上枠15およ
び下枠16とを備えている。可動部材13は、こ
れの上枠15と固定部材12との間に介設された
シリンダ装置17により昇降駆動されるように構
成されている。
上記固定部材12および可動部材13には、前
後方向に延在する上側支持部材18および下側支
持部材19がそれぞれ設けられている。これら支
持部材18および19は、上下方向に対向位置し
て前後方向に間隔的に配設された複数(図は各10
の場合)の上側支持部20および下側支持部21
を備えている。これら支持部20および21は、
両者間にトーシヨンバーなどの棒状体aを挾持し
得るように、相互対向部が下向きの平面状および
上向きのV字状(V溝の角度は60度程度がよい)
にそれぞれ形成されており、かつこの相互対向部
は上記焼入液10中に浸漬位置されている。ま
た、下側支持部材19には、下側支持部21の各
後端部とそれぞれ連接する突起22が設けられて
おり、これら突起22の上端面23は前側が下方
に傾斜している。さらに、下側支持部材19に
は、後端部に位置して上方に立上る腕部24が設
けられるとともに、前端部側に位置して上前方に
階段状に延びる複数(図は7つの場合)の段部2
5が設けられている。腕部24の上端部26は軸
線が横方向をなす弧状に形成されている。段部2
5は前側が下方に傾斜するように形成されてい
る。そして、腕部24の上端部26および最前部
に位置する段部25は、可動部材13が上昇位置
にあるとき焼入液10の液面より上方に突出し得
るように構成されている。
なお、図示例においては最後部の下側支持部2
1の後方に凹部27が設けられている。また、上
側支持部材18および下側支持部材19が横方向
に複数(図は各3つの場合)にそれぞれ分割され
るとともに、両側に配置されたものは横方向位置
を可変設定し得るように構成されており、かつ上
側支持部20および下側支持部21も横方向に複
数(図は各7つの場合)にそれぞれ分割されてい
るが、本発明はこれに限られるものではない。
上記固定部材12には相互に平行をなして前後
方向に延在する一対の搬送部材30が一体的に連
結されている。この搬送部材30は、上記下側支
持部21の上限高さと下限高さとの中間に位置し
て前後方向に延在する鋸歯状部31と、上記腕部
24の上端部26の上限高さと下限高さとの中間
に位置して鋸歯状部31の後端部と連接する傾斜
部32と、上記段部25の上限高さと下限高さと
の中間に位置して鋸歯状部31の前端部と連接す
る階段状部33とを備えている。鋸歯状部31は
下側支持部21の昇降路に臨み、前側が下方に緩
傾する複数(図は10の場合)の歯部34を備えて
いる。傾斜部32は前方が下方に傾斜するように
形成されている。なお、傾斜部32には上記下側
支持部材19の凹部27の昇降路より若干後方に
位置して上方に突出する突起35が形成されてい
る。階段状部33には、上記段部25の各後端部
の昇降路に臨み上面が前側に傾斜する複数の段部
36が形成されており、かつ前端部には上方に突
出するストツパ37が設けられている。
上記液槽11内には、両側部に位置して前後方
向に延在する焼入液噴出管40が設けられてい
る。この噴出管40は棒状体aの長手方向に沿つ
て焼入液を噴出し、液槽11内における焼入油を
撹拌して棒状体aに対し均等な焼入処理を施し得
るようになつている。
つぎに、上述のように構成された装置の動作に
ついて説明する。可動部材13は適宜の制御手段
(図示略)を介してシリンダ装置17を駆動制御
することにより、所望のプログラムに従つて昇降
制御されている。1回の昇降動作につき所要時間
は4sec程度に設定することも可能であるが、通常
は8sec程度とするのがよい。
所定温度に加熱された棒状体aは、第6図に示
すように可動部材13が上昇位置にあるとき下側
支持部材19における腕部24の上端部26に対
し、可動部材13の昇降動作と連動する適宜の搬
入手段を介して1つずつ載置される。このように
して腕部24に支持された棒状体aは、可動部材
13の下降過程において搬送部材30の傾斜部3
2に移動され、重力作用により傾斜部32に沿つ
て下降しながら前進し、突起35に当接して停止
している(第5図)。そして、可動部材13の2
番目の上昇過程において再び下側支持部材19に
移動され、凹部27に支持されて上昇されたのち
(第6図)、2番目の下降過程において再び搬送部
材30の傾斜部32に移動され、鋸歯状部31の
後から第1番目の歯部34の後端に当接して停止
している。さらに、可動部材13の3番目の上昇
過程において突起22の上面23に沿つて移動さ
れることにより後から第1番目の下側支持部21
に支持され、上昇位置に達したとき上側支持部2
0との間に挾持される。3番目の下降過程におい
ては搬送部材30に移動され、鋸歯状部31の後
から2番目の歯部34の後端部に当接している。
以下同様にして、可動部材13の昇降動作に伴な
つて下側支持部材19と搬送部材30との間に交
互に受渡されるとともにその度ごとに1ステツプ
ずつ前方に移動される。そして、13番目の下降過
程において鋸歯状部31の前端部に移動された棒
状体aは、上述とほぼ同様にして可動部材13の
昇降動作に伴なつて下側支持部材19の段部25
と搬送部材30における階段状部33の段部36
との間で交互に受渡されるとともにその度ごとに
1段づつ移動され、20番目の上昇時に搬送部材3
0の最前部における段部36に達しストツパ37
と当接している。そして、可動部材13の昇降動
作と連動する適宜の搬出手段(図示略)により外
部に搬出される。以上の動作は上記搬入手段を介
して搬入された各棒状体について同様に行なわれ
る。
上記構成によれば、可動部材13を昇降駆動す
るだけで棒状体aの間欠的な拘束と搬送とを交互
に行なうことができ、上記従来装置に比し構造が
著しく簡単化されるとともに、取扱いがはるかに
容易になる。また、上側支持部20を平坦状に形
成するとともに下側支持部21をV字状に形成し
たので、棒状体の外径がたとえば18〜30mm程度の
範囲で変動してもそのまま使用可能であり、かつ
両側部に配設された上側および下側の各支持部2
0および21の横方向位置を可変設定し得るよう
にしたので、棒状体長さの変動に対しても容易に
対応することができ、段取作業が大幅に簡単化さ
れる。しかも、固定部材12と可動部材13との
相互摺動部が焼入液10の液面上に位置してお
り、かつ搬送部材30は固定されたままであるか
ら、液中のスケール等により円滑な動作が妨げら
れるようなことがない。
また、棒状体aが焼入液10中に浸漬されてか
ら最初に拘束されるまでの間に、下側支持部材1
9と搬送部材30との間で2回の受渡しが行なわ
れるようにしたので、この間に約10秒の時間が経
過し、上側支持部20と下側支持部21とによる
最初の拘束時にスケールの噛込みによるキズや圧
痕などが生ずるのを効果的に防止することができ
る。しかも、棒状体aはマルテンサイト変態する
温度域(350〜150℃)において上側支持部20お
よび下側支持部21により間欠的に拘束されてい
るので、熱変形の発生を効果的に防止することが
できる。
すなわち、上述のように構成された本発明装置
により焼入処理を施した実施例A(外径22mm、長
さ822mm)と、上記従来装置によつて施した比較
例B(外径21.6mm、長さ967mm)と、非拘束状態で
焼入れした比較例C(外径21.9mm、長さ830mm)と
の焼入後の各段階〜におけるフレ(+3σ)
の変化は下表および第7図に示す通りであつて、
比較例BおよびCは矯正工程を除くいずれの段
階においても規格値(3mm)を超えているのに対
し、実施例Aにおいては常に規格値未満であつ
た。なお、段階は焼入後、は焼もどし後、
は非拘束焼入の場合の予備矯正後、はシヨツト
ピーニング後、はセツチング後、は非拘束焼
入の場合の最終矯正後であることを示す。
The present invention relates to a restraint hardening device for rod-shaped bodies. When hardening a rod-shaped object such as a torsion bar, if it is treated in a free state, it is likely to be deformed during heating and hardening, so in order to maintain the product quality at the desired level, cold hardening is necessary. A straightening process is essential. In order to solve these problems, a rolling press hardening machine has conventionally been used which hardens a round bar-shaped object to be hardened while rotating and pressurizing it. This device is provided with a pedestal 2 provided in a quenching fluid 1 as illustrated in FIGS. 1 and 2. One end of this frame 2 is swingably supported via a horizontal shaft 3, and a drive wheel 4 provided at the other end is supported via a link 5 eccentrically connected to the drive wheel 4. It is configured to perform rocking motion by being rotationally driven by a power source 6. The mount 2 has a lower roller 7 and an upper roller 8 for rotationally pressurizing the torsion bar a.
The lower roller 7 is driven to rotate at a predetermined speed by a power source 9, and the upper roller 8 is rotated by a cylinder device 10.
It is supported so that it can be moved in and out of the way. In addition, the transport device 1
1 is a V for supporting the torsion bar a on the upper surface.
A main body 13 in which a character-shaped groove 12 is formed, and this main body 1
The main body 13 is provided with driving wheels 14 that support both front and rear ends of the main body 13.
By making a circular motion, the torsion bar a is sequentially moved forward. In the conventional device configured as described above,
Since the torsion bar a is rotated and pressed by the upper and lower rollers 8 and 7, impressions are likely to occur. Furthermore, the structure and operation of the device are complex, requiring troublesome handling and maintenance. Furthermore, since it is inconvenient to adjust the positions of the rollers 7, 8, etc., it takes time to set up when changing product types, making it unsuitable for high-mix, low-volume production. Also, the quenching tact is slow. Moreover, as will be described later (see FIG. 7), there is a problem in that deformation caused by heat treatment cannot be sufficiently prevented. The present invention has been made under the above circumstances, and its purpose is to provide a rod-shaped product which has a simpler structure and is easier to handle than the above-mentioned conventional devices, and which can significantly improve the quality level. The purpose of the present invention is to provide a restrained hardening device. Hereinafter, the present invention will be described with reference to an illustrated embodiment. In FIGS. 3 to 6, a fixing member 12 is provided above a liquid tank 11 containing a quenching fluid 10. As shown in FIGS. The movable member 13 includes a column 14 that vertically slides through the fixed member 12, and an upper frame 15 and a lower frame 16 attached to both upper and lower ends of the column 14. The movable member 13 is configured to be driven up and down by a cylinder device 17 interposed between the upper frame 15 and the fixed member 12. The fixed member 12 and the movable member 13 are provided with an upper support member 18 and a lower support member 19, respectively, which extend in the front-rear direction. These support members 18 and 19 are arranged in plurality (each 10 in the figure), facing each other in the vertical direction and arranged at intervals in the front-rear direction.
) upper support part 20 and lower support part 21
It is equipped with These support parts 20 and 21 are
A planar shape with mutually opposing parts facing downward and a V-shape facing upward so that a rod-shaped body a such as a torsion bar can be held between the two (the angle of the V groove is preferably about 60 degrees).
, and these mutually opposing portions are immersed in the quenching liquid 10. Further, the lower support member 19 is provided with protrusions 22 that connect with each rear end portion of the lower support portion 21, and the upper end surfaces 23 of these protrusions 22 are inclined downward at the front side. Furthermore, the lower support member 19 is provided with a plurality of arm parts 24 located at the rear end and rising upward, and a plurality of arm parts 24 located at the front end and extending upward and forward in a step-like manner (the figure shows seven arm parts). ) step part 2
5 is provided. The upper end portion 26 of the arm portion 24 is formed in an arc shape with an axis extending in the lateral direction. Stepped section 2
5 is formed so that the front side is inclined downward. The upper end portion 26 of the arm portion 24 and the step portion 25 located at the frontmost portion are configured to protrude above the surface of the quenching fluid 10 when the movable member 13 is in the raised position. In addition, in the illustrated example, the rearmost lower support portion 2
A recess 27 is provided at the rear of 1. In addition, the upper support member 18 and the lower support member 19 are each divided into a plurality of parts (in the case of three in the figure) in the horizontal direction, and the parts arranged on both sides are configured so that the horizontal position can be variably set. Although the upper support part 20 and the lower support part 21 are each divided in the horizontal direction into a plurality of parts (in the case of seven parts in the figure), the present invention is not limited to this. A pair of conveying members 30 are integrally connected to the fixing member 12 and extend in parallel to each other in the front-rear direction. The conveying member 30 includes a serrated portion 31 located between the upper limit height and the lower limit height of the lower support portion 21 and extending in the front-rear direction, and an upper limit height and a lower limit of the upper end portion 26 of the arm portion 24. an inclined portion 32 located midway between the height and connected to the rear end of the sawtooth portion 31; and a sloped portion 32 located midway between the upper and lower limit heights of the stepped portion 25 and connected to the front end of the sawtooth portion 31. A stepped portion 33 is provided. The sawtooth portion 31 faces the hoistway of the lower support portion 21 and includes a plurality of tooth portions 34 (10 in the figure) whose front side is gently inclined downward. The inclined portion 32 is formed so that the front side thereof is inclined downward. Incidentally, a protrusion 35 is formed on the inclined portion 32 and is located slightly rearward of the hoistway of the recessed portion 27 of the lower support member 19 and protrudes upward. The stepped portion 33 has a plurality of stepped portions 36 facing the hoistway at the rear end of each stepped portion 25 and whose upper surface slopes forward, and a stopper 37 protruding upward at the front end. It is provided. Inside the liquid tank 11, quenching liquid ejection pipes 40 are provided which are located on both sides and extend in the front-rear direction. This spout pipe 40 spouts quenching fluid along the longitudinal direction of the rod-shaped body a, and agitates the quenching oil in the liquid tank 11 so that the rod-shaped body a can be uniformly quenched. There is. Next, the operation of the apparatus configured as described above will be explained. The movable member 13 is controlled to move up and down according to a desired program by driving and controlling the cylinder device 17 through an appropriate control means (not shown). Although it is possible to set the time required for one lifting/lowering operation to about 4 seconds, it is usually better to set it to about 8 seconds. The rod-shaped body a heated to a predetermined temperature moves the movable member 13 up and down against the upper end 26 of the arm 24 in the lower support member 19 when the movable member 13 is in the raised position as shown in FIG. They are placed one by one via appropriate interlocking loading means. The rod-shaped body a supported by the arm part 24 in this way is moved to the inclined part 3 of the conveying member 30 during the lowering process of the movable member 13.
2, moves forward while descending along the slope 32 due to the action of gravity, and comes into contact with the protrusion 35 and stops (FIG. 5). Then, 2 of the movable member 13
In the second ascending process, it is again moved to the lower support member 19, supported by the recess 27 and elevated (Fig. 6), and then in the second descending process, it is moved again to the inclined part 32 of the conveying member 30, and the sawtooth It comes into contact with the rear end of the first tooth portion 34 from the rear of the shaped portion 31 and stops. Furthermore, as the movable member 13 is moved along the upper surface 23 of the protrusion 22 during the third ascending process, the first lower support part 21 from the rear
when the upper support part 2 reaches the raised position.
It is held between 0 and 0. In the third descending process, it is moved by the conveying member 30 and comes into contact with the rear end portion of the second tooth portion 34 from the rear of the sawtooth portion 31 .
Thereafter, in the same manner, as the movable member 13 moves up and down, it is alternately transferred between the lower support member 19 and the conveyance member 30, and is moved forward by one step each time. Then, in the 13th descending process, the rod-shaped body a moved to the front end of the serrated part 31 is moved to the step part 25 of the lower support member 19 as the movable member 13 moves up and down in substantially the same manner as described above.
and the stepped portion 36 of the stepped portion 33 in the conveying member 30
The transport member 3 is transferred alternately between the two and moved one step each time, and at the 20th rise, the transport member 3
0 reaches the step 36 at the frontmost part of the stopper 37.
It is in contact with. Then, it is carried out to the outside by an appropriate carrying-out means (not shown) that is interlocked with the vertical movement of the movable member 13. The above operations are performed in the same way for each rod-shaped body carried in via the carrying means. According to the above configuration, it is possible to alternately restrain and transport the rod-shaped body a by simply driving the movable member 13 up and down, and the structure is significantly simplified compared to the conventional device, and the handling is easy. becomes much easier. Moreover, since the upper support part 20 is formed flat and the lower support part 21 is formed in a V-shape, it can be used as is even if the outer diameter of the rod-shaped body varies within a range of, for example, 18 to 30 mm. , and upper and lower support parts 2 disposed on both sides.
Since the lateral positions of 0 and 21 can be variably set, it is possible to easily deal with variations in the length of the rod-shaped body, and the setup work is greatly simplified. Moreover, since the mutually sliding portion between the fixed member 12 and the movable member 13 is located above the surface of the quenching fluid 10, and the conveying member 30 remains fixed, the smooth movement due to scale etc. in the fluid is prevented. It does not impede movement. Further, during the period from when the rod-shaped body a is immersed in the quenching liquid 10 to when it is restrained for the first time, the lower support member 1
Since the transfer is made twice between the scale 9 and the conveying member 30, approximately 10 seconds pass during this time, and the scale is It is possible to effectively prevent scratches and impressions caused by biting. Moreover, since the rod-shaped body a is intermittently restrained by the upper support part 20 and the lower support part 21 in the temperature range where martensitic transformation occurs (350 to 150 degrees Celsius), occurrence of thermal deformation can be effectively prevented. Can be done. Specifically, Example A (outer diameter 22 mm, length 822 mm) was hardened using the apparatus of the present invention configured as described above, and Comparative Example B (outer diameter 21.6 mm, length 822 mm) was hardened using the conventional apparatus described above. Deflection (+3σ) at each stage after quenching of Comparative Example C (outer diameter 21.9 mm, length 830 mm) quenched in an unrestrained state (length 967 mm)
The changes in are as shown in the table below and Figure 7,
Comparative Examples B and C exceeded the standard value (3 mm) at all stages except for the straightening process, whereas Example A was always below the standard value. In addition, the stages are after quenching, after tempering,
indicates after preliminary straightening in case of unrestricted hardening, shows after shot peening, shows after setting, and shows after final straightening in case of unrestricted hardening.
【表】
また、耐久性は第8図に応力振幅τ(Kg/mm2)
とその繰返回数Nとの関係を示すように、非拘束
焼入の場合(平均応力40〜52.5Kg/mm2)には破壊
確率10%、平均μ^および95%にそれぞれ対応する
特性が破線イ,ロおよびハのようであるのに対
し、本発明装置によつて焼入した場合(平均応力
45Kg/mm2)には、破壊確率20%に対応する特性を
実線aで示すように著しく優れている。
なお、本発明は上記実施例のみに限定されるも
のではなく、たとえば上側支持部20、下側支持
部21、および搬送部材30等の横方向における
配置は、棒状体aの形状、寸法に応じて適宜に設
計してよい。また、可動部材13に設けられた凹
部27および搬送部材30に設けられた突起35
の要否または数等は、棒状体aの特質に応じて適
宜に設定してよく、かつ下側支持部材13におけ
る腕部24および段部25、ならびに搬送部材3
0における傾斜部32および階段状部33等の要
否も適宜に設定してよい。さらに、上側支持部2
0および下側支持部21の前後方向における配置
数および配列ピツチ等も適宜に設定してよい。そ
の他、本発明の要旨とするところの範囲内で種々
の変更ないし応用が可能である。
本発明は、上述したように所定温度に加熱され
て横方向に延在するとともに前方に移送される棒
状体を順に支持可能に前後方向に配設された複数
の下側支持部を有するものにおいて、上記下側支
持部を保持して昇降駆動される可動部材と、上記
下側支持部の各後側に位置して上記可動部材に設
けられ上端面が下前方に傾斜する複数の突起と、
上記可動部材が上昇位置にあるとき上記下側支持
部との間に上記棒状体を挾持可能に焼入液中に浸
漬された複数の上側支持部を有する固定部材と、
上記下側支持部の各昇降路に臨んで前後方向に配
設されるとともに上面が下前方に傾斜する複数の
歯部を有し上記固定部材と一体的に連結された搬
送部材とを具備し、上記可動部材の昇降動作によ
り上記棒状体が上記突起および歯部と交互に連係
して前方に移送されるようにしたことを特徴とす
るものである。
したがつて、可動部材を昇降駆動することによ
り棒状体を順次移送しながら間欠的に拘束して焼
入れすることができるので、構造が簡単であると
ともに取扱いが容易であり、かつ保守性および耐
久性に優れるとともに段取作業を簡易化すること
ができる。しかも、棒状体における焼入変形の発
生を効果的に防止することができるので矯正工程
を設ける必要がなく、かつトーシヨンバー等に適
用した場合にはその耐久性を大幅に向上させるこ
とができる。[Table] In addition, the durability is shown in Figure 8 as stress amplitude τ (Kg/mm 2 ).
As shown in the relationship between N and the number of repetitions, in the case of unrestrained quenching (average stress 40 to 52.5 Kg/mm 2 ), the characteristics corresponding to the fracture probability of 10%, average μ^ and 95%, respectively. In contrast, when quenched using the device of the present invention (average stress
45Kg/mm 2 ), the properties corresponding to a failure probability of 20% are significantly superior as shown by the solid line a. It should be noted that the present invention is not limited to the above-mentioned embodiments. For example, the arrangement of the upper support part 20, the lower support part 21, the conveyance member 30, etc. in the lateral direction may vary depending on the shape and dimensions of the rod-shaped body a. You may design it as appropriate. Further, a recess 27 provided on the movable member 13 and a protrusion 35 provided on the conveying member 30
The necessity, number, etc. of
The necessity of the inclined portion 32, stepped portion 33, etc. at 0 may be set as appropriate. Furthermore, the upper support part 2
0 and the lower support portion 21 in the front-rear direction, the arrangement pitch, etc. may be set as appropriate. In addition, various modifications and applications are possible within the scope of the gist of the present invention. As described above, the present invention has a plurality of lower support parts disposed in the front and rear direction so as to be able to sequentially support a rod-shaped body that is heated to a predetermined temperature, extends in the lateral direction, and is transferred forward. a movable member that is driven up and down while holding the lower support portion; a plurality of protrusions located on the rear side of the lower support portion and provided on the movable member and having upper end surfaces inclined downward and forward;
a fixed member having a plurality of upper support parts immersed in a quenching liquid so as to be able to sandwich the rod-shaped body between the movable member and the lower support part when the movable member is in the raised position;
A conveying member is provided facing each hoistway of the lower support part in the front-rear direction, has a plurality of tooth parts whose upper surface is inclined downwardly and forwardly, and is integrally connected to the fixing member. The present invention is characterized in that the rod-like body is moved forward in alternating association with the protrusions and teeth as the movable member moves up and down. Therefore, by driving the movable member up and down, the bar-shaped body can be sequentially transferred and intermittently restrained and hardened, resulting in a simple structure, easy handling, and improved maintainability and durability. In addition to being excellent in performance, setup work can be simplified. Moreover, since the occurrence of quenching deformation in the rod-shaped body can be effectively prevented, there is no need to provide a straightening process, and when applied to a torsion bar or the like, the durability can be greatly improved.
第1図および第2図は従来例を示す説明図、第
3図は本発明の一実施例を示す切欠正面図、第4
図および第5図はそれぞれ第3図の−線およ
び−線に沿う断面図、第6図は第5図と異な
る状態を示す断面図、第7図は焼入後の各過程に
おけるフレを比較して示す図、第8図は耐久性を
例示する図である。
10……焼入液、12……固定部材、13……
可動部材、17……シリンダ装置、20……上側
支持部、21……下側支持部、22……突起、2
3……上端面、30……可動部材、31……鋸歯
状部、34……歯部。
1 and 2 are explanatory diagrams showing a conventional example, FIG. 3 is a cutaway front view showing an embodiment of the present invention, and FIG.
Figures 5 and 5 are cross-sectional views taken along lines - and - in Figure 3, Figure 6 is a cross-sectional view showing a different state from Figure 5, and Figure 7 is a comparison of deflection in each process after quenching. FIG. 8 is a diagram illustrating durability. 10...Quenching liquid, 12...Fixing member, 13...
Movable member, 17...Cylinder device, 20...Upper support part, 21...Lower support part, 22...Protrusion, 2
3... Upper end surface, 30... Movable member, 31... Serrated portion, 34... Teeth portion.
Claims (1)
もに前方に移送される棒状体を順に支持可能に前
後方向に配設された複数の下側支持部を有するも
のにおいて、上記下側支持部を保持して昇降駆動
される可動部材と、上記下側支持部の各後側に位
置して上記可動部材に設けられ上端面が下前方に
傾斜する複数の突起と、上記可動部材が上昇され
たとき上記下側支持部との間に上記棒状体を挾持
可能に焼入液中に浸漬された複数の上側支持部を
有する固定部材と、上記下側支持部の各昇降路に
臨んで前後方向に配設されるとともに上面が下前
方に傾斜する複数の歯部を有し上記固定部材と一
体的に連結された搬送部材とを具備し、上記可動
部材の昇降動作により上記棒状体が上記突起およ
び歯部と交互に連係して前方に移送されるように
したことを特徴とする棒状体の拘束焼入装置。1. A device having a plurality of lower support portions disposed in the front-rear direction so as to be able to sequentially support a rod-shaped body that is heated to a predetermined temperature, extends in the lateral direction, and is transferred forward, in which the lower support portion is a movable member that is held and driven up and down; a plurality of protrusions that are located on the rear side of the lower support portion and are provided on the movable member and whose upper end surfaces are inclined downward and forward; a fixing member having a plurality of upper support parts immersed in a quenching liquid so as to be able to sandwich the rod-shaped body between the lower support part; a conveyance member integrally connected to the fixed member, the rod-shaped body being disposed on the protrusion, and having a plurality of teeth whose upper surface is inclined downwardly and forwardly, and integrally connected to the fixed member; A restraint hardening device for a rod-shaped body, characterized in that the rod-shaped body is conveyed forward while being alternately linked with the teeth.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15089781A JPS5852442A (en) | 1981-09-24 | 1981-09-24 | Restrained hardening device for bar-like body |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15089781A JPS5852442A (en) | 1981-09-24 | 1981-09-24 | Restrained hardening device for bar-like body |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5852442A JPS5852442A (en) | 1983-03-28 |
JPH0114285B2 true JPH0114285B2 (en) | 1989-03-10 |
Family
ID=15506761
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15089781A Granted JPS5852442A (en) | 1981-09-24 | 1981-09-24 | Restrained hardening device for bar-like body |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5852442A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4709572A (en) * | 1984-07-31 | 1987-12-01 | Sumitomo Metal Industries, Ltd. | Method of processing continuously cast slabs |
IT1277364B1 (en) * | 1995-07-27 | 1997-11-10 | Pomini Spa | PERFECTED PLANT FOR THE IN-LINE HEAT TREATMENT OF HOT ROLLED PRODUCTS |
-
1981
- 1981-09-24 JP JP15089781A patent/JPS5852442A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5852442A (en) | 1983-03-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN87106435A (en) | Make the curved method and apparatus with tempering of sheet glass | |
US3563721A (en) | Glass sheet supporting press bending and conveying apparatus | |
KR20130056237A (en) | Press bending station for bending heated glass sheets | |
JP2009221042A (en) | Method and apparatus for bending glass sheet | |
US2372646A (en) | Conveying mechanism | |
KR890701483A (en) | Bending and soaking device of glass | |
JPH0114285B2 (en) | ||
US4992088A (en) | Process and apparatus for the bending of flat sheets of glass | |
KR950002329B1 (en) | Method of and apparatus for press-bending glass sheets | |
US3584734A (en) | Conveyor apparatus | |
CN105252276B (en) | A kind of automatic chamfering mechanism of steel frotton | |
CN216737402U (en) | Quenching lifting device | |
JPH074470Y2 (en) | Carrier | |
US3072266A (en) | Material handling apparatus | |
CN214392095U (en) | Steel bar bender for processing steel bars based on linear programming | |
US20030154746A1 (en) | Method for bending a glass sheet and a bending mould | |
US1741516A (en) | Conveyer | |
WO2006001068A1 (en) | Method of quench hardening and apparatus for use therein | |
CN107284955A (en) | A kind of spring hot press fast-positioning device | |
US3815433A (en) | Drive mechanism for a conveyor device for producing an intermittent conveying movement in accordance with a desired pattern of movement | |
US2412724A (en) | Conveyer mechanism for furnaces and other apparatus | |
JPS6043421A (en) | Device for supplying steel product to heat treatment furnace | |
US4655066A (en) | Device for straightening cold-deformable, rotationally-symmetrical workpieces | |
US3948494A (en) | Walking beam furnace | |
CN1138963C (en) | Improvements to furnaces for reheating siderurgical products |