JPH06102809B2 - Induction moving quenching and tempering device - Google Patents
Induction moving quenching and tempering deviceInfo
- Publication number
- JPH06102809B2 JPH06102809B2 JP2074322A JP7432290A JPH06102809B2 JP H06102809 B2 JPH06102809 B2 JP H06102809B2 JP 2074322 A JP2074322 A JP 2074322A JP 7432290 A JP7432290 A JP 7432290A JP H06102809 B2 JPH06102809 B2 JP H06102809B2
- Authority
- JP
- Japan
- Prior art keywords
- quenching
- tempering
- ball screw
- work
- induction
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Heat Treatment Of Articles (AREA)
Description
【発明の詳細な説明】 ＜産業上の利用分野＞ 丸棒材の外周面に螺旋溝を設けたボールネジの高周波焼
入と高周波焼入に続く高周波焼もどしをオンラインで連
続的に行う高周波移動焼入焼もどし装置に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> Induction hardening of a ball screw having a spiral groove on the outer peripheral surface of a round bar is continuously carried out online by induction hardening and induction hardening followed by induction hardening. The present invention relates to a quenching and tempering device.
＜従来の技術＞ 従来、高周波移動焼入によってボールネジからなるワー
クに焼入を行った場合、焼入後の焼もどしは、高周波移
動焼入を行った設備とは別の電気炉にワークを搬入して
行っている。ボールネジの焼もどしにこのようなバッチ
処理を採用するのは、ボールネジの外周面に螺旋溝が設
けられているため、連続処理では均一な焼もどしが難し
いからである。<Prior art> Conventionally, when a work made of a ball screw is hardened by induction heating and quenching, the tempering after hardening is carried into an electric furnace different from the equipment that performed induction hardening. I am doing it. The reason why such a batch process is adopted for tempering a ball screw is that uniform tempering is difficult in a continuous process because a spiral groove is provided on the outer peripheral surface of the ball screw.
＜発明が解決しようとする課題＞ 従って、焼もどしのために、ワークを１ロット分蓄えて
から電気炉に移動する手間がかかるのみならず、連続し
た焼入作業と断続する焼もどし処理作業との連結には、
時間と場所の無益なロスを発生し、且つ電気炉を設置す
るための大きなコストを必要とした。<Problems to be solved by the invention> Therefore, not only is it necessary to store one lot of a work for tempering and then move it to an electric furnace, but also to perform continuous quenching work and intermittent tempering treatment work. To connect
It causes a wasteful loss of time and place, and requires a large cost to install the electric furnace.
本発明は上記事情に鑑みて創案されたものであって、ボ
ールネジの焼入および焼もどしを行うに際して、焼もど
しのための電気炉を必要とせず、焼入と相連続した作業
として安価かつ高品質にに焼もどしを行うことができる
高周波移動焼入焼もどし装置を提供することを目的とし
ている。The present invention has been devised in view of the above circumstances, and does not require an electric furnace for tempering when quenching and tempering a ball screw, and is inexpensive and expensive as work continuous with quenching. It is an object of the present invention to provide a high-frequency moving quenching and tempering device capable of performing tempering with high quality.
＜課題を解決するための手段＞ 上記問題を解決するために、本発明の高周波移動焼入焼
もどし装置は、外周面に螺旋状の溝が設けられたボール
ネジの焼入と焼入に続く焼もどしをオンラインで連続的
に行う装置であって、前記ボールネジからなるワークを
周方向に回転させながら長手方向に水平移動させるワー
ク駆動手段と、そのワークの水平移動路に沿って上流側
から下流側へ順番に配設された鞍形半開放型の高周波焼
入用加熱コイル、焼入用急冷液噴射ジャケット、鞍形半
開放型の高周波焼もどしコイルおよびアフタークーリン
グ用冷却液噴射ジュケットとを具備し、前記高周波焼も
どしコイルは、そのワーク長手方向の長さが前記高周波
焼入用加熱コイルのワーク長手方向の長さの1.5倍以上
であり、前記アフタークーリング用冷却液噴射ジュケッ
トは、前記水平移動路の上方に設けた１個のジャケット
と、前記水平移動路の両側にワークの下部両側面に対向
するように設けた１対のジャケットとからなることを特
徴としている。<Means for Solving the Problems> In order to solve the above-mentioned problems, the high-frequency moving quenching and tempering apparatus of the present invention is a quenching and quenching subsequent to quenching of a ball screw having a spiral groove on its outer peripheral surface. A device for continuously performing online decompression, a work drive means for horizontally moving a work consisting of the ball screw in the longitudinal direction while rotating the work in the circumferential direction, and an upstream side to a downstream side along a horizontal movement path of the work. Equipped with a saddle type semi-opening type induction heating coil, a quenching quench liquid injection jacket, a saddle type semi-opening induction tempering coil and an after-cooling cooling fluid injection jucket arranged in order The induction tempering coil has a length in the work longitudinal direction that is 1.5 times or more the length of the induction quenching heating coil in the work longitudinal direction, and the aftercooling cooling liquid jet is used. The shooting juquette comprises one jacket provided above the horizontal movement path and a pair of jackets provided on both sides of the horizontal movement path so as to face both lower side surfaces of the work. .
＜作用＞ ボールネジからなるワークをワークの長手方向に移動し
ながら、ワークを高周波加熱後ワークに急冷液を噴射し
て焼入を行い、次いでワークを高周波加熱して焼もどし
を行って後、ワークに冷却液を噴射してワークのアフタ
ークーリングを行う。高周波焼もどしコイルのワーク長
手方向の長さを、高周波焼入用加熱コイルのワーク長手
方向の長さの1.5倍以上として、充分な焼もどし時間を
確保したことと、アフタークーリング用冷却液噴射ジュ
ケットを、水平移動路の上方に設けた１個のジャケット
と、水平移動路の両側にワークの下部両側面に対向する
ように設けた１対のジャケットとにより構成したことと
により、ワークが外周面に螺旋溝を有するボールネジで
あるにもかかわらず、また、そのワークの焼もどしを焼
入に続けてオンラインで連続的に行うにもかかわらず、
緩やかで均一な焼もどしが可能になる。<Operation> While moving the work consisting of a ball screw in the longitudinal direction of the work, the work is subjected to high frequency heating, a quenching liquid is sprayed onto the work to quench it, and then the work is subjected to high frequency heating to temper the work. After cooling the workpiece by spraying a cooling liquid. The length of the induction tempering coil in the longitudinal direction of the work is 1.5 times or more the length of the heating coil for induction hardening in the longitudinal direction of the work to secure a sufficient tempering time, and the cooling liquid injection jucket for after cooling. Is constituted by one jacket provided above the horizontal movement path and a pair of jackets provided on both sides of the horizontal movement path so as to face both lower side surfaces of the work, and thus the work has an outer peripheral surface. Despite being a ball screw with a spiral groove, and despite the fact that the work is tempered continuously after quenching online.
Allows gentle and uniform tempering.
＜実施例＞ 以下、図面を参照して本発明の実施例を説明する。第１
図〜第５図は本発明の高周波移動焼入焼もどし装置の実
施例とを説明するための図面であって、第１図は高周波
移動焼入焼もどし装置の概略構成図、第２図はこの高周
波移動焼入焼もどし装置によって焼入、焼もどしされる
ボールネジの温度とボールネジの移動距離との関係を示
すグラフ、第３図はボールネジが焼もどしされた後の温
度の時間的変化を示すグラフ、第４図はアフタークーリ
ング用冷却液噴射ジャケットの説明図、第５図はボール
ネジの部分断面拡大図である。<Example> Hereinafter, an example of the present invention will be described with reference to the drawings. First
5 to FIG. 5 are drawings for explaining an embodiment of the high-frequency induction hardening and tempering apparatus of the present invention. FIG. 1 is a schematic configuration diagram of the high-frequency induction hardening and tempering apparatus, and FIG. FIG. 3 is a graph showing the relationship between the temperature of the ball screw quenched and tempered by this high-frequency moving quenching and tempering device and the moving distance of the ball screw, and FIG. 3 shows the time change of the temperature after the ball screw is tempered. A graph, FIG. 4 is an explanatory view of a cooling liquid injection jacket for after cooling, and FIG. 5 is an enlarged partial cross-sectional view of a ball screw.
第１図に示すように、本実施例の高周波移動焼入焼もど
し装置はワークとして長尺状のボールネジ１を採り上げ
ている。ボールネジ１には図示しないボールが転送する
螺線状の溝２が設けられている。この高周波移動焼入焼
もどし装置は、ボールネジ１をその長手方向（矢印Ａの
方向）に移動しながら、且つ、ボールネジ１を、長手方
向の軸を中心として回転させながら、高周波焼入後高周
波焼もどしを行う高周波移動焼入焼もどし装置であっ
て、高周波焼入のためにボールネジ１を加熱する鞍形半
開放型の高周波焼入用加熱コイル10と、加熱されたボー
ルネジ１を冷却する急冷液l1を噴射するために、高周波
焼入用加熱コイル10のボールネジ１の移動方向側に設け
た急冷液噴射ジャケット20と、ボールネジ１を焼もどす
ために急冷液噴射ジャケット20のボールネジ１の移動方
向側に設けた鞍形半開放型の高周波焼もどしコイル30
と、焼もどしされたボールネジ１を常温まで冷却する冷
却液l2を噴射するために高周波焼もどしコイル30のボー
ルネジ１の移動方向側に設けたアフタークーリング用冷
却液噴射ジャケット40とを具備している。100および101
はそれぞれ高周波焼入用加熱コイル10および高周波焼も
どしコイル30に給電する高周波電源である。本実施例で
は高周波電源100と101とは別個の電源としているが、共
通な高周波電源とし、高周波焼もどしコイル30へは適当
なインピーダンスを介して給電してもよい。As shown in FIG. 1, the induction moving quenching and tempering apparatus of this embodiment employs a long ball screw 1 as a work. The ball screw 1 is provided with a spiral groove 2 through which a ball (not shown) is transferred. In this induction hardening quenching and tempering device, the ball screw 1 is moved in its longitudinal direction (the direction of arrow A), and the ball screw 1 is rotated about an axis in the longitudinal direction. A induction moving quenching and tempering device for tempering, which is a saddle-shaped semi-open type induction heating coil 10 for heating the ball screw 1 for induction hardening, and a quenching liquid for cooling the heated ball screw 1. The quenching liquid injection jacket 20 provided on the moving direction side of the ball screw 1 of the induction hardening heating coil 10 for injecting l 1, and the moving direction of the ball screw 1 of the quenching liquid injection jacket 20 for tempering the ball screw 1. Saddle type semi-open type induction tempering coil 30 provided on the side
And a cooling liquid injection jacket 40 for after cooling provided on the moving direction side of the ball screw 1 of the high-frequency tempering coil 30 for injecting a cooling liquid l 2 for cooling the tempered ball screw 1 to room temperature. There is. 100 and 101
Are high-frequency power supplies that feed the induction hardening heating coil 10 and the induction tempering coil 30, respectively. In the present embodiment, the high frequency power supplies 100 and 101 are separate power supplies, but a common high frequency power supply may be used and power may be supplied to the high frequency tempering coil 30 via an appropriate impedance.
第１図においては、高周波焼入用加熱コイル10および高
周波焼もどしコイルの加熱部分の長さL1およびL2の間に
は、L2＞1.5×L1であるようにL1およびL2が選定されて
いる。なお、50は圧縮空気ｋを吹き出してボールネジ１
の表面に付着した急冷液l1を吹き飛ばす空気ノズルであ
る。また、アフタークーリング用冷却液噴射ジャケット
40は、第４図に示すように、３個のジャケット40a、40b
および40cから構成されており、ジャケット40aはボール
ネジ１の上方に、ジャケット40bと40cとは、ボールネジ
１の両側やや下方にボールネジ１に向かって配置されて
いる。このように３個のジャケット40a、40bおよび40c
を配置すると、上方に配置されたジャケット40aが噴射
する冷却液l2aの量を、ジャケット40bと40cがそれぞれ
噴射する冷却液l2b、l2cの量より少なくしても全体とし
てボールネジ１の表面が均一に冷却される。しかも、ボ
ールネジ１の表面を均一に冷却することができるジャケ
ットの個数を最小限度にすることができる。In Figure 1, between the length L 1 and L 2 in the heated portion of the induction hardening heating coil 10 and the high-frequency tempering coil, L 2> such that 1.5 × L 1 L 1 and L 2 Has been selected. In addition, 50 is a ball screw 1 which blows out compressed air k.
Is an air nozzle that blows off the quenching liquid l 1 adhering to the surface of the. Also, a cooling liquid injection jacket for after cooling
40 is three jackets 40a, 40b as shown in FIG.
The jacket 40a is arranged above the ball screw 1 and the jackets 40b and 40c are arranged on both sides of the ball screw 1 slightly below and toward the ball screw 1. Thus three jackets 40a, 40b and 40c
Is arranged, even if the amount of the cooling liquid l 2a jetted by the jacket 40a arranged above is smaller than the amounts of the cooling liquid l 2b , l 2c jetted by the jackets 40b and 40c, respectively, the surface of the ball screw 1 as a whole. Are cooled uniformly. Moreover, the number of jackets that can uniformly cool the surface of the ball screw 1 can be minimized.
ボールネジ１の焼入、焼もどしに際して、第５図に示す
ように、ボールネジ１の温度変化観察点として、Ａ、Ｂ
およびＣ点の３点を採り上げた。点Ａは溝２とボールネ
ジ１の最外表面との交叉点近辺の点、点Ｂは溝２の中央
底部直下の点、また、点Ｃはボールネジ１の溝２同士の
中間の表面の近辺の点である。When quenching and tempering the ball screw 1, as shown in FIG.
And 3 points of C point were picked up. Point A is a point near the intersection of the groove 2 and the outermost surface of the ball screw 1, point B is a point just below the center bottom of the groove 2, and point C is a point near the middle surface between the grooves 2 of the ball screw 1. It is a point.
次に、本実施例の高周波移動焼入焼もどし装置の動作に
ついて説明する。ボールネジ１を図示しないワーク回転
装置によって長手方向の軸を中心として回転させる。高
周波焼入用加熱コイル10と高周波焼もどしコイル30に図
示しない高周波電源から高周波電流を通電するとと共
に、急冷液噴射ジャケット20から急冷液l1を、冷液液噴
射ジャケット40から冷却液l2を噴射させる。ボールネジ
１を矢印Ａの方向に図示しない移動装置によって移動さ
せる。高周波焼入用加熱コイル10によってボールネジ１
の表面が加熱される。そして、加熱された表面が、矢印
Ａの方向に移動すると、急冷液噴射ジャケット20から噴
射された急冷液l1によって冷却されて焼入され、ボール
ネジ１の表面に所望の深さと硬度を保持する硬化層が形
成される。ボールネジ１の表面に付着している冷却液l1
は、空気ノズル50から吹き出された圧縮空気ｋによって
吹き飛ばされる。焼入された表面が、更に矢印Ａの方向
に移動すると、高周波焼もどしコイル30によって加熱さ
れて焼もどしされる。焼もどしされた表面が、なおも矢
印Ａの方向に移動すると、アフタークーリング用冷却液
噴射ジャケット40から噴射された冷却液l2によって均一
に冷却されてほぼ常温となる。Next, the operation of the high frequency moving quenching and tempering apparatus of this embodiment will be described. The ball screw 1 is rotated about a longitudinal axis by a work rotating device (not shown). Induction heating coil 10 and induction tempering coil 30 are energized with a high-frequency current from a high-frequency power source (not shown), while quench liquid jet jacket 20 quench liquid l 1 and cold liquid jet jacket 40 coolant l 2 . Make it jet. The ball screw 1 is moved in the direction of arrow A by a moving device (not shown). Ball screw 1 by heating coil 10 for induction hardening
The surface of is heated. Then, when the heated surface moves in the direction of arrow A, it is cooled and quenched by the quench liquid l 1 jetted from the quench liquid jet jacket 20, and the surface of the ball screw 1 maintains a desired depth and hardness. A hardened layer is formed. Coolant l 1 on the surface of ball screw 1
Is blown away by the compressed air k blown out from the air nozzle 50. When the hardened surface further moves in the direction of arrow A, it is heated and tempered by the induction tempering coil 30. When the tempered surface is still moved in the direction of arrow A, it is uniformly cooled by the cooling liquid l 2 sprayed from the after-cooling cooling liquid spray jacket 40 and becomes almost room temperature.
以上の動作によってボールネジ１の点Ｃの温度が変化す
る状態をグラフで示したのが第２図であって、以下第２
図について説明する。P1〜P6は、点Ｃの温度状態の変化
の説明の便のためのグラフ上に設けた点である。The state in which the temperature at the point C of the ball screw 1 changes by the above operation is shown in the graph of FIG.
The figure will be described. P 1 to P 6 are points provided on the graph for the convenience of explaining the change in the temperature state at the point C.
ボールネジ１の前記点Ｃは、ほぼ常温（例えば20℃）の
状態（P1点）から高周波焼入用加熱コイル10により加熱
されて850〜900℃まで昇温する（P2点）。この際、高周
波焼入用加熱コイル10に加えられる電力の大きさは、ボ
ールネジ１のサイズに応じて、それぞれ、２〜4kw/cm2
（但しkw/cm2は高周波焼入用加熱コイル10によって覆わ
れるボールネジ１の全周にわたる表面積の１cm2当たり
に対する電力である）であり、また、周波数は60〜400k
Hzである。そして、100〜200℃／秒で温度が上昇する。
次に、加熱されたボールネジ１の表面に急冷液噴射ジャ
ケット20から急冷液が噴射され、ボールネジ１の表面は
冷却されて焼入が終わる（P3点）。次いで、高周波焼も
どしコイル30によって焼入された表面が加熱されて焼も
どしが行われる。即ち、焼入された表面はほぼ150〜200
℃にまで加熱される（P4）。そして、この表面はなお
も、高周波焼もどしコイル30の下を通過するが（P4点と
P5点の間）、本実施例においては、高周波焼もどしコイ
ル30の形状を適宜に選定して、この通過の間は高周波焼
もどしコイル30によって保温されるようにしてある。The point C of the ball screw 1 is heated by the induction hardening heating coil 10 from a state of approximately normal temperature (for example, 20 ° C.) (P 1 point) to 850 to 900 ° C. (P 2 point). At this time, the amount of electric power applied to the induction hardening heating coil 10 is 2 to 4 kw / cm 2 depending on the size of the ball screw 1.
(However, kw / cm 2 is the power per 1 cm 2 of the surface area over the entire circumference of the ball screw 1 covered by the induction hardening heating coil 10), and the frequency is 60 to 400 k.
Hz. Then, the temperature rises at 100 to 200 ° C / sec.
Next, the quench liquid is jetted from the quench liquid jet jacket 20 onto the heated surface of the ball screw 1, and the surface of the ball screw 1 is cooled and quenching ends (P 3 point). Then, the surface quenched by the induction tempering coil 30 is heated and tempered. That is, the quenched surface is approximately 150-200
℃ is heated to a (P 4). Then, the surface still, and is passed under the coil 30 tempering also induction hardening (P 4 points
P between 5 points), in this embodiment, and properly selected the shape of the coil 30 tempering also induction hardened during this pass it is so as to be kept by the coil 30 tempering also induction hardened.
この際、高周波焼もどしコイル30に加えられる電力の大
きさおよびその周波数は、ボールネジ１のサイズに応じ
て、それぞれ、0.01〜0.1kw/cm2および60〜400kHzであ
る。そして、７〜20℃／秒で温度が上昇する。即ち、高
周波焼もどしコイル30のボールネジ１の長手方向の長さ
は、高周波焼入用加熱コイル10のこの方向の長さに比べ
て前述のように1.5倍以上の長さとしてあることと、高
周波焼もどしコイル30に与える電力を高周波焼入用加熱
コイル10に与える電力と比べて小さくしているので、焼
もどしのときのボールネジ１の昇温の度合いは焼入のと
きの昇温の度合いに比べて小さい。即ち、焼入されたボ
ールネジ１をゆっくり加熱することによってボールネジ
１の焼もどしを効果的に行うことができる。また、焼も
どしの電力が焼入の電力に比べて前記のように小さいこ
とは、誘導電流の浸透深さが浅い（焼入のときの約1/10
程度）ので、ボールネジ１を前記のようにゆっくりと加
熱することにより伝導熱を利用して効果的な焼もどしが
行われる。At this time, the magnitude of the electric power applied to the induction tempering coil 30 and its frequency are 0.01 to 0.1 kw / cm 2 and 60 to 400 kHz, respectively, depending on the size of the ball screw 1. Then, the temperature rises at 7 to 20 ° C / sec. That is, the length of the induction hardening coil 30 in the longitudinal direction of the ball screw 1 is 1.5 times or more as long as the length of the induction hardening heating coil 10 in this direction. Since the electric power applied to the tempering coil 30 is made smaller than the electric power applied to the induction hardening heating coil 10, the degree of temperature rise of the ball screw 1 during tempering depends on the degree of temperature rise during tempering. Small compared. That is, by slowly heating the quenched ball screw 1, the ball screw 1 can be effectively tempered. In addition, the fact that the power for tempering is smaller than that for quenching as described above means that the penetration depth of the induced current is shallow (about 1/10 of that during quenching).
Therefore, by slowly heating the ball screw 1 as described above, effective tempering is performed by utilizing conduction heat.
焼もどしされる表面近傍が高周波焼もどしコイル30の下
を通過し終えると（P5点）、自然放冷状態となり（P5点
とP6点の間）、この後、アフタークーリング用冷却液噴
射ジャケット40から冷却液l2が噴射されてボールネジ１
の焼もどしされた表面はほぼ常温（例えば40℃）となる
（P7点）。When the vicinity of the surface to be tempered has finished passing under the induction tempering coil 30 (P 5 point), it will be in the state of natural cooling (between P 5 point and P 6 point), after which the cooling liquid for after cooling Coolant l 2 is sprayed from the spray jacket 40 and the ball screw 1
Tempered surface is substantially normal temperature (e.g. 40 ° C.) of (P 7 points).
第２図はボールネジ１の点Ｃの温度に関するグラフであ
るが、第３図はボールネジ１の点Ａ、ＢおよびＣの高周
波焼入用加熱コイル10通過後の温度変化を示すグラフで
ある。この第３図のグラフに示すように、高周波焼入用
加熱コイル10をボールネジ１が出た瞬間（t1）では、点
Ａ、ＢおよびＣの温度は、それぞれ、P2A点、P2B点およ
びP2C点にあり、以後、急冷液l1が噴射される時間t2ま
では均熱化が促進されて、それぞれ、Ｐ′2A点、Ｐ′2B
点およびＰ′2C点となり、その時点で急冷液l1が噴射さ
れてP3点に至る。焼もどしのときのP4点は、加熱電力が
低く、且つ、加熱時間が長い（L2／L1倍）から、前記の
変化は殆ど無いといってよい。以後、アフタークーリン
グ用冷却液噴射ジャケット40から冷却液l2が噴射される
ことによってほぼ常温のP7点に到達する。2 is a graph relating to the temperature at the point C of the ball screw 1, while FIG. 3 is a graph showing the temperature change after passing through the heating coil 10 for induction hardening at the points A, B and C of the ball screw 1. As shown in the graph of FIG. 3, at the moment (t 1 ) when the ball screw 1 comes out of the induction hardening heating coil 10, the temperatures at points A, B and C are P 2A point and P 2B point, respectively. And P 2C points, and thereafter, soaking is promoted until time t 2 at which the quenching liquid l 1 is injected, and P ′ 2A point and P ′ 2B point are respectively obtained.
Point and P'2C point, at which point the quenching liquid l 1 is injected to reach the P 3 point. P 4 points when the tempering is low heating power, and, from a long heating time (L 2 / L 1 ×), can be said that said change little. After that, the coolant l 2 is jetted from the after-cooling coolant jet jacket 40 to reach the point P 7 at approximately room temperature.
＜発明の効果＞ 以上説明したように本発明の高周波移動焼入焼もどし装
置は、ボールネジからなるワークをワークの長手方向に
移動しながら、ワークを高周波焼入用加熱後ワークに急
冷液を噴射して焼入を行い次いでワークを高周波加熱し
て焼もどしを行う。焼もどしを行った後、ワークに冷却
液を噴射したアフタークーリングを行ってワークを常温
にする。<Effects of the Invention> As described above, the induction hardening quenching and tempering device of the present invention moves the work consisting of a ball screw in the longitudinal direction of the work while injecting the quenching liquid onto the work after heating the work for induction hardening. Then, quenching is performed, and then the work is subjected to high frequency heating to be tempered. After tempering, the work is cooled to room temperature by performing after-cooling by injecting a cooling liquid.
故に、本発明の高周波移動焼入焼もどし装置によれば、
ボールネジからなるワークを焼入、焼もどしするに際
し、焼もどしのための電気炉を必要としないし、従っ
て、ワークを焼入後電気炉に移動させる必要もないの
で、電気炉を設置するコストがかからず、しかも焼入と
同じラインで焼もどしを行うことができるので、安価に
焼もどしを行うことができる利点を有する。また、外面
形状が複雑なワークの焼もどしを焼入に続いて連続的に
行うにもかかわらず、バッチ処理と同様の高い焼もどし
品質を確保することができる。Therefore, according to the high frequency moving quenching and tempering apparatus of the present invention,
When quenching and tempering a work consisting of a ball screw, an electric furnace for tempering is not required, and therefore there is no need to move the work to the electric furnace after quenching, so the cost of installing the electric furnace is reduced. Since there is no need for this and the tempering can be performed on the same line as the quenching, there is an advantage that the tempering can be performed at low cost. Further, although the work having a complicated outer surface shape is continuously tempered after quenching, it is possible to secure the high tempering quality similar to the batch processing.
第１図〜第５図は本発明の高周波移動焼入焼もどし装置
の実施例を説明するための図面であって、第１図は高周
波移動焼入焼もどし装置の概略構成図、第２図はこの高
周波移動焼入焼もどし装置によって焼入、焼もどしされ
るボールネジの温度とボールネジの移動距離との関係を
示すグラフ、第３図はボールネジの各部が焼入用加熱さ
れた後の温度の時間的変化を示すグラフ、第４図はアフ
タークーリング用冷却液噴射ジャケットの説明図、第５
図はボールネジの部分断面拡大図である。 １……ワーク、10……高周波焼入用加熱コイル、20……
急冷液噴射ジャケット、30……高周波焼もどしコイル、
40……冷却液噴射ジャケット、40a、40b、40c……ジャ
ケット、l1……急冷液、l2、l2a、l2b、l2c……冷却
液。1 to 5 are drawings for explaining an embodiment of the high-frequency induction hardening and tempering device of the present invention, and FIG. 1 is a schematic configuration diagram of the high-frequency induction hardening and tempering device, and FIG. Is a graph showing the relationship between the temperature of the ball screw that is quenched and tempered by this induction hardening and tempering device and the moving distance of the ball screw. Fig. 3 shows the temperature after each part of the ball screw is heated for quenching. FIG. 4 is a graph showing a temporal change, FIG. 4 is an explanatory view of a cooling liquid injection jacket for after cooling, and FIG.
The figure is an enlarged view of a partial cross section of the ball screw. 1 …… Workpiece, 10 …… Heating coil for induction hardening, 20 ……
Quenching liquid injection jacket, 30 ... Induction tempering coil,
40 ...... coolant injection jacket, 40a, 40b, 40c ...... jacket, l 1 ...... quench liquid, l 2, l 2a, l 2b, l 2c ...... coolant.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭53−58914（ＪＰ，Ａ) 特開 昭56−87624（ＪＰ，Ａ) 特公 平１−15565（ＪＰ，Ｂ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-53-58914 (JP, A) JP-A-56-87624 (JP, A) JP-B-1-15565 (JP, B2)
Claims (1)
ジの焼入と焼入に続く焼もどしをオンラインで連続的に
行う装置であって、前記ボールネジからなるワークを周
方向に回転させながら長手方向に水平移動させるワーク
駆動手段と、そのワークの水平移動路に沿って上流側か
ら下流側へ順番に配設された鞍形半開放型の高周波焼入
用加熱コイル、焼入用急冷液噴射ジャケット、鞍形半開
放型の高周波焼もどしコイルおよびアフタークーリング
用冷却液噴射ジュケットとを具備し、前記高周波焼もど
しコイルは、そのワーク長手方向の長さが前記高周波焼
入用加熱コイルのワーク長手方向の長さの1.5倍以上で
あり、前記アフタークーリング用冷却液噴射ジュケット
は、前記水平移動路の上方に設けた１個のジャケット
と、前記水平移動路の両側にワークの下部両側面に対向
するように設けた１対のジャケットとからなることを特
徴とするボールネジの高周波移動焼入焼もどし装置。1. An apparatus for continuously quenching a ball screw having a spiral groove on its outer peripheral surface and tempering subsequent to the quenching online by rotating a work made of the ball screw in a circumferential direction. However, a work driving means for horizontally moving in the longitudinal direction, a saddle-shaped half-opening type induction heating coil for quenching, and a quenching quench for quenching, which are sequentially arranged from the upstream side to the downstream side along the horizontal movement path of the work. A liquid injection jacket, a saddle-shaped semi-open type induction tempering coil, and a cooling liquid injection juquette for after-cooling, wherein the induction tempering coil has a length in the work longitudinal direction of the induction hardening heating coil. The length of the workpiece in the longitudinal direction is 1.5 times or more, and the cooling liquid jetting jacket for after cooling has one jacket provided above the horizontal movement path and the horizontal movement path. RF moving quenching and tempering also apparatus of the ball screw, characterized in that it consists of a pair of jacket provided to face the lower sides of the workpiece on the side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2074322A JPH06102809B2 (en) | 1990-03-23 | 1990-03-23 | Induction moving quenching and tempering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2074322A JPH06102809B2 (en) | 1990-03-23 | 1990-03-23 | Induction moving quenching and tempering device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03274221A JPH03274221A (en) | 1991-12-05 |
| JPH06102809B2 true JPH06102809B2 (en) | 1994-12-14 |
Family
ID=13543765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2074322A Expired - Fee Related JPH06102809B2 (en) | 1990-03-23 | 1990-03-23 | Induction moving quenching and tempering device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06102809B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230045339A1 (en) * | 2021-08-05 | 2023-02-09 | Toyota Motor Engineering & Manufacturing North America, Inc. | Controlling porosity of an interference lithography process by fine tuning exposure time |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080264529A1 (en) * | 2007-04-27 | 2008-10-30 | Chun Young Park | Apparatus and Method for Continuously Processing Long Bar by Heat Treatment Using Induction Heating |
| JP5657316B2 (en) * | 2010-09-22 | 2015-01-21 | Ntn株式会社 | Automobile parts, manufacturing method and manufacturing apparatus thereof |
| CN103642994A (en) * | 2013-11-29 | 2014-03-19 | 安徽绩溪徽山链传动有限公司 | Multifunctional planar quench machine tool |
| CN104294019A (en) * | 2014-10-28 | 2015-01-21 | 芜湖世特瑞转向系统有限公司 | High-frequency quenching device for steering gear racks and a quenching method thereof |
| CN105018691B (en) * | 2015-07-15 | 2017-06-20 | 哈尔滨工程大学 | A kind of high strength petroleum sucker rod fast quenching apptss |
| CN107541596B (en) * | 2017-08-28 | 2018-12-25 | 芜湖中铁科吉富轨道有限公司 | A kind of burning optimization on line technique of U75V rail |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5117929A (en) * | 1974-07-08 | 1976-02-13 | Sumitomo Bakelite Co | Anteiseio kairyoshita mukyukigurafutojugofukugotai |
| JPS5358914A (en) * | 1976-11-10 | 1978-05-27 | Shiyuuzou Aranuma | Gradual qenching method of parts |
| JPS5687624A (en) * | 1979-12-20 | 1981-07-16 | Nippon Kokan Kk <Nkk> | Heat treatment of ni-containing barlike steel product |
| US4747809A (en) * | 1987-06-15 | 1988-05-31 | General Motors Corporation | Hydraulic control for a continuously variable transmission |
-
1990
- 1990-03-23 JP JP2074322A patent/JPH06102809B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230045339A1 (en) * | 2021-08-05 | 2023-02-09 | Toyota Motor Engineering & Manufacturing North America, Inc. | Controlling porosity of an interference lithography process by fine tuning exposure time |
| US11914304B2 (en) * | 2021-08-05 | 2024-02-27 | Toyota Motor Engineering & Manufacturing North America, Inc. | Controlling porosity of an interference lithography process by fine tuning exposure time |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03274221A (en) | 1991-12-05 |
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