JPS6343449B2 - - Google Patents
Info
- Publication number
- JPS6343449B2 JPS6343449B2 JP57105482A JP10548282A JPS6343449B2 JP S6343449 B2 JPS6343449 B2 JP S6343449B2 JP 57105482 A JP57105482 A JP 57105482A JP 10548282 A JP10548282 A JP 10548282A JP S6343449 B2 JPS6343449 B2 JP S6343449B2
- Authority
- JP
- Japan
- Prior art keywords
- cam
- sliding surface
- eccentric
- generating device
- relative
- 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
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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
- C21D9/30—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for crankshafts; for camshafts
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- 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 Treatment Of Articles (AREA)
Description
【発明の詳細な説明】
本発明は、カムの摺動面を、アーク熱等のエネ
ルギを発生するエネルギ発生装置に対して相対移
動させながら、同エネルギ発生装置により加熱溶
解し白銑硬化させる方法の改良に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention is a method of heating, melting, and hardening white pig iron by moving the sliding surface of a cam relative to an energy generating device that generates energy such as arc heat. This is related to the improvement of.
カムは曲率半径の異なる摺動面を具えており、
従来方法においては、カム摺動面を白銑硬化させ
る際に、どの曲率面においても、エネルギ発生装
置からのエネルギ出力を同一出力で且つエネルギ
発生装置とカム摺動面との相対移動速度を同一速
度で、加熱溶解するようにしている。このため、
曲率半径の異なる摺動面では、摺動面に形成され
る白銑（チル）硬化層の深さが異なり、曲率半径
の小さい摺動面では深く、曲率半径の大きい摺動
面では浅くなつており、カム摺動面の耐摩耗性能
が必ずしも均一ではないという不具合があつた。 The cam has sliding surfaces with different radii of curvature.
In the conventional method, when hardening the cam sliding surface with white pig iron, the energy output from the energy generator is the same on any surface of curvature, and the relative movement speed between the energy generator and the cam sliding surface is the same. It is heated and melted at a high speed. For this reason,
For sliding surfaces with different radii of curvature, the depth of the white pig iron (chill) hardening layer formed on the sliding surfaces differs; it is deep on sliding surfaces with a small radius of curvature, and shallow on sliding surfaces with a large radius of curvature. However, there was a problem that the wear resistance of the cam sliding surface was not necessarily uniform.
本発明の目的は、従来方法の不具合を解消し、
チル硬化層の深さを略一定にするようにしたカム
摺動面の白銑硬化方法を提供することにある。 The purpose of the present invention is to solve the problems of the conventional method,
It is an object of the present invention to provide a white pig iron hardening method for a cam sliding surface in which the depth of a chill hardened layer is made substantially constant.
この目的を達成するため、本発明は、駆動機構
の偏心軸を一定の速度で回転させることによりカ
ム幅方向にカム摺動面をエネルギ発生装置に対し
て相対移動させると共に、カム周方向にカム摺動
面をエネルギ発生装置に対して相対移動させて、
カム摺動面をエネルギ発生装置に対して蛇行さ
せ、同エネルギ発生装置により加熱溶解して白銑
硬化させる方法において、上記エネルギ発生装置
を上記カム摺動面に対し実質的に垂直に対向する
状態に常時保ち、且つ、Ｒをカムの偏心円部の曲
率半径、ｔを定数とした場合に、偏心円部での上
記カム摺動面に対する上記エネルギ発生装置の周
方向成分の相対移動速度V2を、カムの基礎円部
と偏心円部とを接続する接続部での上記カム摺動
面に対する上記エネルギ発生装置の周方向成分の
相対移動速度V1に対し、
V2＝V1／（１−ｔ／Ｒ）
に設定したことを特徴とするカム摺動面の白銑硬
化方法を提案するものである。 To achieve this objective, the present invention moves the cam sliding surface relative to the energy generator in the cam width direction by rotating the eccentric shaft of the drive mechanism at a constant speed, and also moves the cam sliding surface in the cam circumferential direction. By moving the sliding surface relative to the energy generator,
A method in which a cam sliding surface is made to meander relative to an energy generating device, and the energy generating device heats and melts to harden white pig iron, in which the energy generating device is substantially perpendicularly opposed to the cam sliding surface. and when R is the radius of curvature of the eccentric circular portion of the cam and t is a constant, the relative moving speed of the circumferential component of the energy generating device with respect to the sliding surface of the cam at the eccentric circular portion V 2 For the relative movement speed V 1 of the circumferential component of the energy generating device with respect to the cam sliding surface at the connecting portion connecting the base circle portion and the eccentric circle portion of the cam, V 2 =V 1 /(1 -t/R) A method for hardening white pig iron on a cam sliding surface is proposed.
本発明の上記方法によれば、エネルギ発生装置
とカム摺動面との相対移動速度が略直線状の接続
部では一定の速度とし、曲率半径の小さい偏心円
部では接続部におけるよりも速い速度となるよう
にして、単位面積当りの摺動面へのエネルギ入力
が変化されるので、どの曲率面においても、摺動
面に形成されるチル硬化層の深さが略一定とな
り、カム摺動面の耐摩耗性能を実質的に均一にで
きるのである。 According to the above method of the present invention, the relative movement speed between the energy generating device and the cam sliding surface is constant at a substantially linear connection portion, and is faster at an eccentric circular portion with a small radius of curvature than at the connection portion. Since the energy input to the sliding surface per unit area is changed in this way, the depth of the chilled hardened layer formed on the sliding surface is approximately constant for any surface of curvature, and the cam sliding The wear resistance of the surface can be made substantially uniform.
以下、本発明の実施例を添付図面を参照して詳
細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
第１図には、カムシヤフト１のカム２の摺動面
をエネルギ発生装置に対して蛇行線形の溶融路３
に沿つて相対移動させながら白銑硬化させる装置
の一例が示されている。この装置は、カム２の摺
動面をエネルギ発生装置に対して蛇行させる駆動
ユニツト４及び追従ユニツト５から成る駆動機構
と、上記エネルギ発生装置としてのTIGトーチ６
とで構成されている。 In FIG. 1, the sliding surface of the cam 2 of the camshaft 1 is connected to the energy generating device by a meandering linear melting path 3.
An example of an apparatus for hardening white pig iron while relatively moving it along is shown. This device includes a drive mechanism consisting of a drive unit 4 and a follower unit 5 that meander the sliding surface of the cam 2 relative to the energy generator, and a TIG torch 6 as the energy generator.
It is made up of.
駆動機構の駆動ユニツト４は、ベース部材７に
軸線方向に移動可能に且つ回転可能に支持された
主軸８、減速機９と歯車１０，１１を介して主軸
８に連結された主軸回転モータ１２、ベース部材
７に回転可能に支持され、一端をモータ１３に連
結された回転軸１４、同回転軸１４の中心軸線
O1から中心軸線O2が偏心した回転軸の他端に固
着され、主軸８の略中央部に取付けられた２つの
ベアリング１５間に挾持された偏心軸１６、主軸
８の中心軸線O3から中心軸線O4が偏心して主軸
に取付けられ、カムシヤフト１の中心軸線O5と
中心軸線O4が一致してカムシヤフトを支持する
主軸ヘツド１７、及び、同主軸ヘツド１７にその
中心軸線O4に平行に出没自在に支持され、カム
シヤフト１が所定の初期位置にある時にのみカム
シヤフトの孔内に挿入される位置決め用ピン１８
を有している。カム２は、第２図に示すように、
カムシヤフト１の中心軸線O5を曲率中心とする
基礎円部１９、同基礎円部１９とは異なる曲率中
心O6を有し、上記基礎円部より小径の偏心円部
２０、及び上記基礎円部１９と偏心円部２０とを
滑らかに結ぶ接続部２１，２１′から成つており、
同接続部２１，２１′は基礎円部１９に接続され
た部分Ａ―Ｂ、Ｅ―Ｆを曲線状に形成され、偏心
円部２０へつながる部分Ｂ―Ｃ、Ｄ―Ｅを略直線
状に形成されている。カムシヤフト１は、カム２
の偏心円部２０の曲率中心O6が主軸８の中心軸
線O3と一致するように、主軸ヘツド１７に支持
されるものである。なお、各種のエンジンでは、
カム２の曲率中心O5とO6間の距離がそれぞれ異
なつて設計されているので、これに対応させるた
め、主軸８と主軸ヘツド１７の中心軸線O3とO4
間の距離を変化させることができるように、主軸
ヘツド１７を主軸８に対して第１図上下方向に移
動させる主軸ヘツド偏心モータ２２及び主軸ヘツ
ド偏心駆動装置２３が主軸８と主軸ヘツド１７と
の間に設けられている。 The drive unit 4 of the drive mechanism includes a main shaft 8 supported rotatably and movably in the axial direction by a base member 7, a main shaft rotation motor 12 connected to the main shaft 8 via a reduction gear 9 and gears 10 and 11; A rotating shaft 14 rotatably supported by the base member 7 and connected at one end to the motor 13; a central axis of the rotating shaft 14;
From O 1 , the central axis O 2 is fixed to the other end of the eccentric rotating shaft, and the eccentric shaft 16 is held between two bearings 15 installed approximately at the center of the main shaft 8, and from the central axis O 3 of the main shaft 8. A main shaft head 17 is attached to the main shaft with its central axis O 4 eccentrically arranged, and the main shaft head 17 supports the camshaft with the central axis O 5 of the camshaft 1 coinciding with the central axis O 4 , and the main shaft head 17 is attached parallel to the central axis O 4 of the camshaft 1. a positioning pin 18 that is supported so as to be freely protrusive and retractable, and that is inserted into the hole of the camshaft only when the camshaft 1 is at a predetermined initial position;
have. The cam 2, as shown in FIG.
A base circle portion 19 having a center of curvature about the central axis O 5 of the camshaft 1, an eccentric circle portion 20 having a center of curvature O 6 different from the base circle portion 19 and having a smaller diameter than the base circle portion, and the base circle portion It consists of connection parts 21 and 21' that smoothly connect the eccentric circle part 19 and the eccentric circle part 20,
In the connecting portions 21 and 21', the portions A-B and EF connected to the base circular portion 19 are formed in a curved shape, and the portions B-C and DE connected to the eccentric circular portion 20 are formed in a substantially straight line. It is formed. Camshaft 1 is cam 2
is supported by the spindle head 17 so that the center of curvature O 6 of the eccentric circular portion 20 coincides with the central axis O 3 of the spindle 8 . In addition, for various engines,
Since the distances between the centers of curvature O 5 and O 6 of the cam 2 are designed to be different, in order to correspond to this, the central axes O 3 and O 4 of the main shaft 8 and the main shaft head 17 are
A spindle head eccentric motor 22 and a spindle head eccentric drive device 23 move the spindle head 17 vertically in FIG. 1 relative to the spindle 8 so that the distance between the spindle 8 and the spindle head 17 can be changed. is provided in between.
駆動機構の追従ユニツト５は、カムシヤフト１
の中心軸線O5と中心軸線が一致してカムシヤフ
ト１を支持し、常時左方に付勢されているヘツド
２４を有している。 The following unit 5 of the drive mechanism is connected to the camshaft 1
The camshaft 1 is supported by a head 24 whose central axis coincides with the central axis O5 of the camshaft 1, and which is always biased to the left.
エネルギ発生装置であるTIGトーチ６は、電源
に接続されマイナス電位が与えられるタングステ
ン電極２５と、同タングステン電極２５を覆うガ
スノズル２６とを有し、ガスノズル２６からはア
ルゴンガスをシールド用として噴出するようにな
つている。トーチ６は、第２図に概略的に示すよ
うに、モータ２７によつて駆動されるウオーム軸
２８に噛合する駆動装置２９に支持され、カム２
の摺動面に対し直角に配置されると共に、モータ
２７の駆動によりカム２の摺動面に沿つて水平方
向（第１図前後方向）に往復動することができ
る。 The TIG torch 6, which is an energy generator, has a tungsten electrode 25 connected to a power source and given a negative potential, and a gas nozzle 26 that covers the tungsten electrode 25. The gas nozzle 26 spouts argon gas for shielding. It's getting old. The torch 6 is supported by a drive device 29 that meshes with a worm shaft 28 driven by a motor 27, as shown schematically in FIG.
The cam 2 is disposed perpendicularly to the sliding surface of the cam 2, and can reciprocate in the horizontal direction (back and forth direction in FIG. 1) along the sliding surface of the cam 2 by driving the motor 27.
上述した装置を用いた本発明によるカム２の摺
動面の白銑硬化方法において、先づ、第１ステツ
プとして、カムシヤフト１が主軸ヘツド１７とヘ
ツド２４との間に挾持され、カムシヤフト１の孔
内にピン１８が進入する初期位置に移動されて、
第３図に示すようにカム２の接続部２１の部分Ｂ
―Ｃが水平に位置される。その後、トーチ６の電
極２５がカム２の摺動面上のＡ点に近接対向され
る。 In the white pig iron hardening method of the sliding surface of the cam 2 according to the present invention using the above-mentioned device, first, as a first step, the camshaft 1 is held between the spindle head 17 and the head 24, and the hole of the camshaft 1 is The pin 18 is moved to the initial position where it enters the inside,
As shown in FIG.
-C is positioned horizontally. Thereafter, the electrode 25 of the torch 6 is closely opposed to point A on the sliding surface of the cam 2.
次に、第２ステツプとして、ガスノズル２６よ
りアルゴンガスが噴出され、また電極２５とカム
２との間に略一定の電流が供給されて、それらの
間にアークが生じ、カム２の摺動面が円状に加熱
溶解される。同時に、モータ１３が駆動されるこ
とにより、偏心軸１６が一定の速度で回転して、
主軸８そしてカム２が電極２５に対してカム２の
全幅よりも狭い振幅で振動する。また同時に、モ
ータ２７が駆動されることにより、駆動装置２９
を介して電極２５を有するトーチ６が、カム２の
摺動面に対し周方向に所定の相対移動速度V1で
第３図右方へＡ点からＣ点まで移動される。従つ
て、電極２５はカム２の摺動面を円状に溶解しな
がら溶融路３に沿つて蛇行してカム摺動面上をＡ
点からＣ点へ移動し、接続部２１の摺動面を所定
の幅にわたつて加熱溶解する。 Next, as a second step, argon gas is ejected from the gas nozzle 26, and a substantially constant current is supplied between the electrode 25 and the cam 2, causing an arc between them and the sliding surface of the cam 2. is heated and melted in a circular shape. At the same time, by driving the motor 13, the eccentric shaft 16 rotates at a constant speed,
The main shaft 8 and the cam 2 vibrate relative to the electrode 25 with an amplitude narrower than the full width of the cam 2. At the same time, by driving the motor 27, the driving device 29
The torch 6 having the electrode 25 is moved to the right in FIG. 3 from point A to point C in the circumferential direction with respect to the sliding surface of the cam 2 at a predetermined relative movement speed V1 . Therefore, the electrode 25 meanderes along the melting path 3 while melting the sliding surface of the cam 2 in a circular shape, and moves A on the cam sliding surface.
Moving from point to point C, the sliding surface of the connecting portion 21 is heated and melted over a predetermined width.
電極２５がＣ点に対向する位置に達すると、第
３ステツプとして、駆動装置２９を介するトーチ
６の移動のみが停止される。同時に、主軸回転モ
ータ１２が駆動されて、主軸８が中心軸線O3を
中心として回転される。中心軸線O3はカム２の
偏心円部２０の曲率中心O6と一致しているので、
カム２が第３図に示すようにこの曲率中心O6を
中心として回転する。この際、カム摺動面に対す
るトーチ６の周方向の相対移動速度V2が偏心円
部２０の曲率半径に応じて所定の値だけ相対移動
速度V1よりも速くなるように、カム２が回転す
るよう設定されている。従つて、トーチ６の電極
２５は、第２ステツプと同様に、カム２の摺動面
上を相対的に蛇行しながらＣ点からＤ点へ移動
し、偏心円部２０の摺動面を所定の幅にわたつて
加熱溶解する。 When the electrode 25 reaches the position opposite point C, only the movement of the torch 6 via the drive device 29 is stopped as a third step. At the same time, the main shaft rotation motor 12 is driven, and the main shaft 8 is rotated about the central axis O3 . Since the central axis O 3 coincides with the center of curvature O 6 of the eccentric circular portion 20 of the cam 2,
The cam 2 rotates around this center of curvature O6 as shown in FIG. At this time, the cam 2 is rotated such that the relative movement speed V 2 of the torch 6 in the circumferential direction with respect to the cam sliding surface becomes faster than the relative movement speed V 1 by a predetermined value according to the radius of curvature of the eccentric circular portion 20. It is set to do so. Therefore, similarly to the second step, the electrode 25 of the torch 6 moves from point C to point D while relatively meandering on the sliding surface of the cam 2, and moves the sliding surface of the eccentric circular portion 20 to a predetermined position. Heat and melt over a width of .
電極２５がＤ点に対向する位置に達すると、第
４ステツプとして、カム２の回転のみが停止さ
れ、第３図に示すように、接続部２１′の部分Ｄ
―Ｅが水平に位置される。同時に、モータ２７が
再び駆動されることにより、トーチ６が、カム２
の摺動面に対し周方向に相対移動速度V1と等し
い相対移動速度V3で、第３図右方へＤ点からＦ
点まで移動される。従つて、第２ステツプと同様
に、電極２５がカム２の摺動面上を蛇行しながら
Ｄ点からＦ点へ移動し、接続部２１′の摺動面を
所定の幅にわたつて加熱溶解する。 When the electrode 25 reaches the position facing point D, only the rotation of the cam 2 is stopped as a fourth step, and as shown in FIG.
-E is positioned horizontally. At the same time, the motor 27 is driven again, so that the torch 6 is moved to the cam 2.
At a relative movement speed V 3 equal to the relative movement speed V 1 in the circumferential direction with respect to the sliding surface of
moved to the point. Therefore, similarly to the second step, the electrode 25 moves from point D to point F while meandering on the sliding surface of the cam 2, heating and melting the sliding surface of the connecting portion 21' over a predetermined width. do.
従つて、本発明の方法によれば、カム２の曲率
半径の異なる偏心円部２０と接続部２１，２１′
の摺動面を加熱溶解する際、トーチ６のエネルギ
出力即ちアーク電流値を略一定に保つと共に、偏
心軸１６の回転速度を一定にしてカム２の摺動面
とトーチ６とのカム幅方向成分の相対移動速度を
一定の関係に維持する一方、カム２の摺動面とト
ーチ６との周方向成分の相対移動速度を、曲率半
径の小さい偏心円部２０では曲率半径無限大の接
続部２１，２１′におけるよりも速くなるように、
変化制御させている。この結果、偏心円部２０の
単位面積当りの摺動面へのエネルギ入力が接続部
２１，２１′に比べ小さくなるので、偏心円部２
０の摺動面に形成されるチル硬化層３０の深さ
T2及び接続部２１，２１′の摺動面に形成される
チル硬化層３１，３１′の深さT1，T3は略一定と
なり、カム２の摺動面の耐摩耗性能が実質的に均
一となるものである。 Therefore, according to the method of the present invention, the eccentric circular portion 20 and the connecting portions 21, 21' of the cam 2 having different radii of curvature
When heating and melting the sliding surface of the cam 2, the energy output of the torch 6, that is, the arc current value, is kept approximately constant, and the rotational speed of the eccentric shaft 16 is kept constant, so that the sliding surface of the cam 2 and the torch 6 are heated and melted in the cam width direction. While maintaining the relative movement speed of the components in a constant relationship, the relative movement speed of the circumferential component between the sliding surface of the cam 2 and the torch 6 is changed from the eccentric circle part 20 with a small radius of curvature to the connection part with an infinite radius of curvature. so that it is faster than at 21, 21',
Changes are controlled. As a result, the energy input to the sliding surface per unit area of the eccentric circular portion 20 is smaller than that of the connecting portions 21 and 21', so the eccentric circular portion 20
Depth of chill hardened layer 30 formed on sliding surface of 0
The depths T 1 and T 3 of the chill hardened layers 31 and 31' formed on the sliding surfaces of T 2 and the connecting parts 21 and 21 ' are approximately constant, and the wear resistance of the sliding surfaces of the cam 2 is substantially improved. It is uniform.
なお、曲率半径の小さいカム２の偏心円部２０
での周方向成分の相対移動速度V2は、曲率半径
無限大である直線状の接続部２１での周方向成分
の相対移動速度V1に対し、次の方程式で表わさ
れるように設定すればよい。 Note that the eccentric circular portion 20 of the cam 2 has a small radius of curvature.
If the relative moving speed V 2 of the circumferential component at , is set as expressed by the following equation with respect to the relative moving speed V 1 of the circumferential component at the linear connecting portion 21 with an infinite radius of curvature, good.
V2＝V1／（１−ｔ／Ｒ）
ここで、Ｒは偏心円部２０の曲率半径、ｔは定
数で、２〜３に設定されることが望ましい。 V 2 =V 1 /(1-t/R) Here, R is the radius of curvature of the eccentric circular portion 20, and t is a constant, which is preferably set to 2 to 3.
第１図は本発明のカム摺動面の白銑硬化方法に
用いられる装置の一例を示す部分的な概略断面
図、第２図は第１図の線―に沿つてカム及び
トーチを示す概略側面図、第３図は白銑硬化方法
のステツプを示す説明図である。
１……カムシヤフト、２……カム、４……駆動
機構の駆動ユニツト、５……駆動機構の追従ユニ
ツト、６……TIGトーチ（エネルギ発生装置）、
８……主軸、１２……主軸回転モータ、１６……
偏心軸、１９……基礎円部、、２０……偏心円部、
２１，２１′……接続部、２５……電極、２７…
…モータ、２９……駆動装置、３０，３１，３
１′……チル硬化層。
FIG. 1 is a partial schematic cross-sectional view showing an example of the apparatus used in the method of hardening white pig iron on a cam sliding surface of the present invention, and FIG. 2 is a schematic diagram showing a cam and a torch along the line - in FIG. 1. The side view and FIG. 3 are explanatory drawings showing the steps of the white pig iron hardening method. 1...Camshaft, 2...Cam, 4...Drive unit of the drive mechanism, 5...Following unit of the drive mechanism, 6...TIG torch (energy generator),
8...Main shaft, 12...Main shaft rotation motor, 16...
Eccentric shaft, 19... Base circle part, 20... Eccentric circle part,
21, 21'... Connection portion, 25... Electrode, 27...
...Motor, 29...Drive device, 30, 31, 3
1'...Chill hardening layer.
Claims (1)
ことによりカム幅方向にカム摺動面をエネルギ発
生装置に対して相対移動させると共に、カム周方
向にカム摺動面をエネルギ発生装置に対して相対
移動させて、カム摺動面をエネルギ発生装置に対
して蛇行させ、同エネルギ発生装置により加熱溶
解して白銑硬化させる方法において、上記エネル
ギ発生装置を上記カム摺動面に対し実質的に垂直
に対向する状態に常時保ち、且つ、Ｒをカムの偏
心円部の曲率半径、ｔを定数とした場合に、偏心
円部での上記カム摺動面に対する上記エネルギ発
生装置の周方向成分の相対移動速度V2を、カム
の基礎円部と偏心円部とを接続する接続部での上
記カム摺動面に対する上記エネルギ発生装置の周
方向成分の相対移動速度V1に対し、 V2＝V1／（１−ｔ／Ｒ） に設定したことを特徴とするカム摺動面の白銑硬
化方法。[Claims] 1. By rotating the eccentric shaft of the drive mechanism at a constant speed, the cam sliding surface is moved in the cam width direction relative to the energy generator, and the cam sliding surface is moved in the cam circumferential direction. In the method of moving the cam sliding surface relative to the energy generating device to make the cam sliding surface meander with respect to the energy generating device, and heating and melting with the energy generating device to harden the white pig iron, the energy generating device is moved relative to the cam sliding surface. When the cam is always maintained in a state substantially perpendicularly opposed to the surface, and R is the radius of curvature of the eccentric circular portion of the cam, and t is a constant, the energy generated on the sliding surface of the cam at the eccentric circular portion The relative moving speed V 2 of the circumferential component of the device is defined as the relative moving speed V 1 of the circumferential component of the energy generating device with respect to the cam sliding surface at the connecting portion connecting the base circle portion and the eccentric circle portion of the cam. In contrast, a white pig iron hardening method for a cam sliding surface is characterized in that V 2 =V 1 /(1-t/R).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10548282A JPS58224118A (en) | 1982-06-21 | 1982-06-21 | Method for chilling sliding surface of cam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10548282A JPS58224118A (en) | 1982-06-21 | 1982-06-21 | Method for chilling sliding surface of cam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58224118A JPS58224118A (en) | 1983-12-26 |
| JPS6343449B2 true JPS6343449B2 (en) | 1988-08-30 |
Family
ID=14408804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10548282A Granted JPS58224118A (en) | 1982-06-21 | 1982-06-21 | Method for chilling sliding surface of cam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58224118A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60211016A (en) * | 1984-04-04 | 1985-10-23 | Honda Motor Co Ltd | Method for working cam before remelting |
| JPS60258420A (en) * | 1984-05-21 | 1985-12-20 | Honda Motor Co Ltd | Camshaft remelting hardening treatment method |
| JPS60258423A (en) * | 1984-05-22 | 1985-12-20 | Honda Motor Co Ltd | Remelting and hardening method of cam shaft |
| JPS61522A (en) * | 1984-06-11 | 1986-01-06 | Honda Motor Co Ltd | Camshaft remelting and hardening treatment method |
| JPS6237564A (en) * | 1985-08-09 | 1987-02-18 | Toyota Motor Corp | Manufacture of remelting chill cam shaft |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2839990C2 (en) * | 1978-09-14 | 1980-05-14 | Audi Nsu Auto Union Ag, 7107 Neckarsulm | Method for remelt hardening the surface of a workpiece rotating about its axis of rotation, which surface is at a different distance from the axis of rotation |
-
1982
- 1982-06-21 JP JP10548282A patent/JPS58224118A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58224118A (en) | 1983-12-26 |
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