JPH05209744A - Cam-attaching-angle measuring apparatus for cam shaft - Google Patents

Cam-attaching-angle measuring apparatus for cam shaft

Info

Publication number
JPH05209744A
JPH05209744A JP19447591A JP19447591A JPH05209744A JP H05209744 A JPH05209744 A JP H05209744A JP 19447591 A JP19447591 A JP 19447591A JP 19447591 A JP19447591 A JP 19447591A JP H05209744 A JPH05209744 A JP H05209744A
Authority
JP
Japan
Prior art keywords
cam
shaft
cam shaft
center
tailstock
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
Application number
JP19447591A
Other languages
Japanese (ja)
Other versions
JP2862103B2 (en
Inventor
Shunichi Sato
俊一 佐藤
Hachiro Matsunaga
八郎 松永
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Materials Corp
Original Assignee
Mitsubishi Materials Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Materials Corp filed Critical Mitsubishi Materials Corp
Priority to JP19447591A priority Critical patent/JP2862103B2/en
Publication of JPH05209744A publication Critical patent/JPH05209744A/en
Application granted granted Critical
Publication of JP2862103B2 publication Critical patent/JP2862103B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • A Measuring Device Byusing Mechanical Method (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

PURPOSE:To measure, the attaching angle of a cam by providing holders, which can be attached to the journals at both end parts of a cam shaft so that the holders can be coupled and removed freely, a rotary encoder and a dial gage. CONSTITUTION:Holders 28 and 30 are fixed to journals 9 and 10 at both end parts of a cam shaft 6 with adjusting bolts 32 and 35. A main-shaft-stage center 16 and a tail stock 23 are engaged with V grooves 31 and 34 of the holders 28 and 30. A rotary encoder 21 and a digital counter 22 are connected to the main-shaft-stage center 16. A dial gage 36 for detecting the top part of a cam piece 8 is arranged between both centers 16 and 23. The cam shaft 6 is rotated, and the tip part of the cam piece 8 of the cam shaft 6 is detected and displayed with the dial gage 36. The rotating angle of the cam shaft 6 is detected with the rotary encoder 21 and displayed and recorded with the digital counter 22. The good or bad state of the attaching angle can be judged adequately and readily, and the accuracy can be assured. Since both centers 16 and 23 can be engaged without perforating the journals 9 and 10 at the end parts of the cam shaft 6, the external appearance quality of the cam shaft 6 can be improved.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、カムシャフトのカム取
付角度測定装置に関し、特に車載用エンジンのバルブ操
作用カムなどを有するカムシャフトのカム取付角度を測
定し、その良否を検査、判定する装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cam mounting angle measuring device for a cam shaft, and more particularly, it measures the cam mounting angle of a cam shaft having a valve operating cam of an on-vehicle engine, and inspects and judges its quality. Regarding the device.

【0002】[0002]

【従来の技術】近年、自動車用エンジンの高出力化・軽
量化に対する要求が増大する中、この要求に対応すべく
中空パイプを用いた軽量カムシャフトが開発されるよう
になってきており、一部で実用化されつつある。一方、
カムシャフトに付設されるカムピ−スには、動弁機構と
しての摺接等を考慮して、耐摩耗性および摺動特性に優
れた材質が要求されるが、このような特性を持つものと
して、焼結合金が近年注目されている。この焼結合金の
カムシャフトはカムピ−ス形状に成形された成形体を中
空シャフト部材に圧入嵌合せしめた後に、焼結処理を施
すことによりカムシャフトを製造するものであるが、カ
ムピ−ス形状の成形体をシャフト部材の所定位置に位置
決めするためには、圧入、カシメ等の面倒な工程を必要
とするばかりでなく、成形体の強度はそれほど高いもの
ではないため、圧入時等に割れとか欠けまたは弯みが発
生する場合がある。このような割れや欠けは品質検査員
の目視による外観検査で良否判定が可能であるが焼結体
であるカムの圧入時に発生した弯みや取付角度不良など
外観検査では発見できないカムの不適格な取付角度を検
査,判定し高精度の品質を補償できるような検査装置は
これまでなかった。ところで、一般的な心押台は実開昭
63−136805号で知られている。このような心押
台は図7で示すように、スイベルテ−ブル1上に配置す
る心押台2と主軸台3にそれぞれ主軸台センタ4と心押
台センタ5を対向して配設している。これらのセンタ
4,5はホ−ン型をしてその鋭利な先端部をワ−クの中
心に嵌合して固定するものである。
2. Description of the Related Art In recent years, as the demand for higher output and lighter weight of automobile engines has increased, lightweight camshafts using hollow pipes have been developed to meet these demands. It is being put to practical use in the department. on the other hand,
The cam piece attached to the camshaft is required to be made of a material having excellent wear resistance and sliding characteristics in consideration of sliding contact as a valve mechanism, but it is assumed that it has such characteristics. Recently, sintered alloys have attracted attention. The camshaft of this sintered alloy is manufactured by press-fitting a molded body molded into a cam piece into a hollow shaft member and then subjecting it to a sintering treatment to manufacture the cam shaft. In order to position the molded body in a predetermined shape on the shaft member, not only a complicated process such as press-fitting and crimping is required, but also because the strength of the molded body is not so high, cracking occurs during press-fitting. There may be a crack or chipping. Such cracks and chips can be judged by visual inspection by a quality inspector, but it is not possible to find them by visual inspection such as bending or mounting angle defect that occurred when press-fitting the cam, which is a sintered body. Until now, there has been no inspection device that can inspect and judge the mounting angle and compensate for high-precision quality. By the way, a general tailstock is known from Japanese Utility Model Publication No. Sho 63-136805. As shown in FIG. 7, such a tailstock has a tailstock center 4 and a tailstock center 5 which are arranged opposite to a tailstock 2 and a headstock 3 which are arranged on a swivel table 1. There is. These centers 4 and 5 are of a horn type, and their sharp tips are fitted and fixed to the center of the work.

【0003】[0003]

【発明が解決しようとする課題】前述したように焼結体
からなるカムを円筒状のシャフトに圧入固定する際に生
ずるカム取付角度の精度を保証できるような検査装置は
なく、また、カムシャフトの両端部に端部が平坦なジャ
−ナルを固着させたカムシャフトを両側センタ−に取付
けようとするときにはこのジャ−ナルの外側端に取付孔
を形成する必要があり品質の外観上好ましくないという
問題がある。
As described above, there is no inspection device capable of guaranteeing the accuracy of the cam mounting angle generated when the cam made of the sintered body is press-fitted and fixed to the cylindrical shaft, and the cam shaft is not provided. When attempting to mount a camshaft having both ends fixed to a journal with flat ends, it is necessary to form mounting holes at the outer ends of this journal, which is not desirable in terms of quality. There is a problem.

【0004】本発明は、前記問題点を解決してカム取付
角度の精度を保証できるとともにカムシャフトの両端ジ
ャ−ナルに取付孔を形成せずに固定できるカムシャフト
のカム取付角度測定装置を提供することを目的とする。
The present invention provides a cam mounting angle measuring device for a cam shaft which can solve the above problems and guarantee the accuracy of the cam mounting angle and fix the cam shaft without forming mounting holes in both journals. The purpose is to do.

【0005】[0005]

【課題を解決するための手段】本発明は、焼結体からな
る複数のカムピースをこのカムピース間及び両端部に圧
入固定されたジャ−ナルとともに圧入固定したカムシャ
フトと、このカムシャフトの両端部のジャーナルに嵌脱
可能に取付けられるホルダと、このホルダの外側部に形
成される溝に係脱可能に取付けられる芯押台センタおよ
び主軸台センタと、前記主軸台センタと一体に形成され
る連結軸に接続されるロ−タリエンコ−ダと、このロ−
タリエンコ−ダに接続される角度表示器と、前記芯押台
センタを取付ける芯押台と、前記主軸台センタと芯押台
センタの間に設けられ接触子を有するダイヤルゲ−ジと
を備えたことを特徴とするカムシャフトのカム取付角度
測定装置である。
DISCLOSURE OF THE INVENTION According to the present invention, a plurality of cam pieces made of a sintered body are press-fitted and fixed together with journals press-fitted between the cam pieces and both ends thereof, and both end portions of the cam shaft. Holder removably attached to the journal, a tailstock center and a headstock center removably attached to a groove formed on the outer side of the holder, and a connection integrally formed with the headstock center A rotary encoder connected to the shaft and this rotor
An angle indicator connected to the Talyen coder, a tailstock for mounting the tailstock center, and a dial gauge having a contactor provided between the headstock center and the tailstock center. Is a cam attachment angle measuring device for a cam shaft.

【0006】[0006]

【作用】本発明のカムシャフトのカム取付角度取付装置
においては、カムシャフトの両端ジャ−ナルをホルダに
それぞれ軸止し、このホルダの溝に主軸台センタおよび
芯押台センタの先端部を係合し、芯押台センタを固定す
る。このようにしてカムシャフトを両センタ−間にセッ
トしてから、ダイヤルゲ−ジの接触子をカムシャフトの
シャフト部A,B,C点の外周に当接してABC点の取
付水平度をまず確認する。次に、複数のカムピ−スのう
ち1個のカムピ−スに接触子を当接してからカムシャフ
トを回転させカムピ−スのトップが接触子に当接すると
ダイヤルゲ−ジの読みは最大値を示すとともにカムシャ
フトの回転角度をロ−タリ−エンコ−ダが検知し、この
検知された値がデジタルカウンタに表示され、このよう
な作動を順次次のカムピ−スに対し行なって測定し、取
付角度の良否を判定するものである。
In the cam mounting angle mounting device for the cam shaft according to the present invention, both journals of the cam shaft are axially fixed to the holder, and the tips of the headstock center and tailstock center are engaged with the grooves of the holder. And fix the tailstock center. After setting the cam shaft between the centers in this way, the contact of the dial gauge is brought into contact with the outer circumference of the shaft parts A, B, and C of the cam shaft to first check the mounting level of the ABC point. To do. Next, when the contact is brought into contact with one of the plurality of cam pieces and then the cam shaft is rotated to bring the top of the cam piece into contact with the contact, the maximum reading of the dial gauge is made. In addition, the rotary encoder detects the rotation angle of the cam shaft, and the detected value is displayed on the digital counter. The quality of the angle is determined.

【0007】[0007]

【実施例】次に本発明の一実施例を図1乃至図6を参照
して説明する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to FIGS.

【0008】まず、本発明の測定装置の試験体である車
両エンジンのバルブ操作用の焼結カムシャフト6の構造
を図3により説明すると、中空なシャフト部7の外周に
それぞれ焼結合金体からなるカムピ−ス8をクランク角
に対応させて位相差を以って位置決めして圧入嵌合され
ると共に同じく焼結体からなるジャ−ナル9、10がカム
ピ−ス8の所定間及びシャフト部7の両端部に対応させ
て位置決めした後圧入嵌合することにより製造されたも
のである。図1において、11は装置架台であり、この架
台11上にはベッド12が設けられている。そしてこのベッ
ド12上の長手方向の一端には主軸台13が載置され、他端
部には図示しな案内部により進退可能に芯押台14が配置
されている。前記主軸台13には玉軸受15を介して円錐形
の主軸台センタ16と一体のセンタ軸17が回転自在に嵌挿
されている。18は玉軸受15と接するように主軸台13の貫
通孔に挿入固定されている外筒である。19は前記センタ
軸17の後部に一体に形成されている連結軸20に設けられ
たカップリングであり、連結軸20の後端部にはたとえば
2000パルスのロ−タリエンコ−ダ21が接続され、このロ
−タリエンコ−ダ21には角度表示器としてのデジタルカ
ウンタ22が接続されており、ロ−タリ−エンコ−ダ21に
より検出された測定値を表示するようになっている。23
は前記芯押台14に芯押台クイル24を介して装着された芯
押台センタであり、25は芯押台14をベッド12に固定する
ためのレバ−である。26は芯押台センタ23を固定するレ
バ−であり、27は芯押台センタ23を芯押台センタ23を進
退させるための操作ハンドルである。28は試験体である
前記カムシャフト6のシャフト部7の一端部に固着され
たジャ−ナル9を嵌合保持するための第1のホルダであ
り、この第1のホルダ28は凹溝29を有する有底円筒状に
形成され、底部に前記主軸台センタ16の先端部に係合保
持されるためのV溝31が形成されている。32は前記ホル
ダ28の前記凹溝29に前記カムシャフト6の一端部のジャ
−ナル9を止着するための調節ボルトであり、前記ホル
ダ28の外周部より凹溝29に3本のボルトがそれぞれ貫通
螺装されている。30は芯押台センタ23側に設けられた第
2のホルダであり、第1のホルダ28と同様に凹溝33を有
する有底円筒状に形成され、底部に前記芯押台センタ23
の先端部に係合保持されるためのV溝34が形成されてい
る。35は前記第2のホルダ30の凹溝33に前記カムシャフ
ト6の他端部に固着されるジャ−ナル10を止着するため
の調節ボルトであり、この調節ボルト35は図4で示すよ
うに前記ホルダ30の外周部より凹溝33に3本それぞれ貫
通螺装されている。36は前記主軸台センタ16と芯押台セ
ンタ23の間のベッド12上に支持台37を介して設けられる
ダイアルゲ−ジであり、このダイアルゲ−ジ36は試験体
であるカムシャフト6のカムピ−ス8に接触させる接触
子38を垂設し、カムシャフト6の各カムピ−ス8に対し
て接触子38を直接接触させ、この状態で図示しない適宜
な駆動手段又は手動によりカムシャフト6を回転させる
と昇降する接触子38に応動して針が動いて接触子38の移
動長さを表示するように構成されている。
First, the structure of a sintered camshaft 6 for operating a valve of a vehicle engine, which is a test body of the measuring apparatus of the present invention, will be described with reference to FIG. The cam piece 8 is positioned by a phase difference corresponding to the crank angle and is press-fitted, and the journals 9 and 10 also made of a sintered body are provided in a predetermined portion of the cam piece 8 and a shaft portion. It is manufactured by performing press-fitting after positioning corresponding to both ends of 7. In FIG. 1, reference numeral 11 is a device base, and a bed 12 is provided on the base 11. A headstock 13 is placed on one end of the bed 12 in the longitudinal direction, and a tailstock 14 is arranged on the other end of the bed 12 so as to be movable back and forth by a guide portion shown in the figure. A center shaft 17 integral with a conical headstock center 16 is rotatably fitted into the headstock 13 via a ball bearing 15. Reference numeral 18 denotes an outer cylinder that is inserted and fixed in the through hole of the headstock 13 so as to be in contact with the ball bearing 15. Reference numeral 19 denotes a coupling provided on a connecting shaft 20 formed integrally with the rear portion of the center shaft 17, and the rear end portion of the connecting shaft 20 has, for example,
A 2000-pulse rotary encoder 21 is connected, and a digital counter 22 as an angle indicator is connected to the rotary encoder 21, and the measured value detected by the rotary encoder 21. Is displayed. twenty three
Is a tailstock center mounted on the tailstock 14 via a tailstock quill 24, and 25 is a lever for fixing the tailstock 14 to the bed 12. 26 is a lever for fixing the tailstock center 23, and 27 is an operation handle for moving the tailstock center 23 forward and backward. Reference numeral 28 is a first holder for fitting and holding the journal 9 fixed to one end of the shaft portion 7 of the cam shaft 6 as a test body. The first holder 28 has a concave groove 29. It has a bottomed cylindrical shape, and a V groove 31 is formed at the bottom for engaging and holding the tip of the headstock center 16. Reference numeral 32 is an adjusting bolt for fixing the journal 9 at one end of the cam shaft 6 to the concave groove 29 of the holder 28. Three bolts are provided in the concave groove 29 from the outer peripheral portion of the holder 28. Each is threaded through. Reference numeral 30 denotes a second holder provided on the tailstock center 23 side, which is formed in a bottomed cylindrical shape having a concave groove 33 like the first holder 28, and has the tailstock center 23 at the bottom.
A V-shaped groove 34 is formed so that the V-shaped groove 34 is engaged and held at the tip of the. Reference numeral 35 is an adjusting bolt for fixing the journal 10 fixed to the other end of the cam shaft 6 in the concave groove 33 of the second holder 30, and the adjusting bolt 35 is as shown in FIG. Each of the three grooves is threaded from the outer peripheral portion of the holder 30 into the groove 33. Reference numeral 36 denotes a dial gauge provided on the bed 12 between the headstock center 16 and the tailstock center 23 via a support 37. The dial gauge 36 is a cam piston of the camshaft 6 as a test body. The contactor 38 for contacting the cam 8 is hung vertically, and the contactor 38 is directly contacted with each cam piece 8 of the camshaft 6, and in this state, the camshaft 6 is rotated by an appropriate driving means not shown or manually. When it is moved, the needle moves in response to the ascending / descending contact 38, and the moving length of the contact 38 is displayed.

【0009】このような実施例の構成において、カムシ
ャフト6のカムピ−ス8の変位を測定する動作を図1な
いし図3に基づいて説明する。まず、カムシャフト6の
両端のジャ−ナル9,10を第1,第2のホルダ28,30に
嵌入し、ボルト32,35により軸止する。この第1のホル
ダ28のV溝29に主軸台センタ16の先端を係合し、芯押台
14を主軸台センタ23方向に移動させ、操作ハンドル27を
廻して芯押台センタ23の先端を第2のホルダ30のV溝34
に係合し、レバ−25により芯押台14をベッド12に固定す
るとともにレバ−26により芯押台センタ23を固定する。
このようにしてカムシャフト6を両センタ−16,23間に
セットしてから、ダイヤルゲ−ジ36の接触子38をカムシ
ャフト6のシャフト部7の外周に当接する。たとえば図
1に示すようにシャフト部7のA,B,C点に接触子38
を当接し、A,B,C点の取付水平度を確認する。水平
でない場合には両センタ16,23の調節ボルト32,35を調
節し、再びA,B,C点にダイヤルゲ−ジ36の接触子38
を当接してカムシャフト6の取付水平度を確認する。こ
れらの確認段階ではカムシャフト6を回転しない。次
に、カムの取付角度を検知しようとするときは図2およ
び図5のように複数のカムピ−ス8のうち1個のカムピ
−ス8Aに前記接触子38を当接し、カムシャフト6を回
転させ、カムピ−ス8Aのトップ部Tが接触子38に当接
するとダイヤルゲ−ジ36の読みは最大値を示し、この時
点でカムシャフト6の回転角度を前記ロ−タリエンコ−
ダ21が検知し、この検知された値がデジタルカウンタ22
に表示される。このトップ部に接触子38が当接した位置
の角度を零点とする。そして、デジタルカウタ22のリセ
ットぼたん22Aを押し、再び接触子38を次のカムピ−ス
8Bに当接し、そのトップ部に再び達するダイヤルゲ−
ジ36の読みは最大値となり、この時のカムシャフト6の
回転角度をロ−タリエンコ−ダ21が検知して、この角度
の値をデジタルカウンタ22に表示する。このようにして
順次カムピ−ス8の角度を測定する。この結果、カムピ
−ス8Aの角度位置を基準位置D(=0゜)として時計
方向に角度が増加するように角度位置が対応付けられて
いるので、ロ−タリエンコ−ダ21はE点から見たカムシ
ャフト6の基準位置D点の角度位置θを検知しデジタル
カウンタ22に入力される。カムシャフト6の回転にとも
ないカムピ−ス8の形状に応じてベ−ス円の変位を測定
する接触子38がカムピ−ス8Bのトップ部Tに当接して
検知されカムピ−ス8Bの角度を基準位置D(=0゜)
と比較して各カムの変心角度の値を検知し、一定基準以
上変位されたカムピ−ス8を有するカムシャフト6を不
良判定することにより取付精度を保証することができ
る。
The operation of measuring the displacement of the cam piece 8 of the cam shaft 6 in the construction of such an embodiment will be described with reference to FIGS. First, the journals 9 and 10 at both ends of the camshaft 6 are fitted into the first and second holders 28 and 30 and fixed by bolts 32 and 35. The tip of the headstock center 16 is engaged with the V groove 29 of the first holder 28 to
14 is moved in the direction of the headstock center 23, and the operation handle 27 is turned so that the tip of the tailstock center 23 is fixed to the V groove 34 of the second holder 30.
The lever 25 fixes the tailstock 14 to the bed 12, and the lever 26 fixes the tailstock center 23.
After setting the camshaft 6 between the centers 16 and 23 in this manner, the contact 38 of the dial gauge 36 is brought into contact with the outer periphery of the shaft portion 7 of the camshaft 6. For example, as shown in FIG. 1, contacts 38 are provided at points A, B and C of the shaft portion 7.
Check the mounting level at points A, B and C. If it is not horizontal, adjust the adjusting bolts 32 and 35 of both the centers 16 and 23, and again contact the contacts 38 of the dial gauge 36 at points A, B and C.
A) to check the mounting level of the camshaft 6. The camshaft 6 is not rotated in these confirmation stages. Next, when it is desired to detect the mounting angle of the cam, as shown in FIGS. 2 and 5, the contact 38 is brought into contact with one of the cam pieces 8A, and the camshaft 6 is fixed. When it is rotated and the top portion T of the cam piece 8A comes into contact with the contact 38, the reading of the dial gauge 36 shows the maximum value. At this time, the rotation angle of the cam shaft 6 is changed to the rotary encoder.
DA21 detects this, and the detected value is digital counter 22
Displayed in. The angle of the position where the contact 38 abuts on this top portion is taken as the zero point. Then, the reset button 22A of the digital counter 22 is pushed, the contact 38 is again brought into contact with the next cam piece 8B, and the dial gear which reaches the top again is reached.
The reading of page 36 becomes the maximum value, and the rotary encoder 21 detects the rotation angle of the camshaft 6 at this time, and the value of this angle is displayed on the digital counter 22. In this way, the angle of the cam piece 8 is sequentially measured. As a result, since the angular position of the cam piece 8A is associated with the reference position D (= 0 °) so that the angle increases in the clockwise direction, the rotary encoder 21 is viewed from the point E. The angular position θ of the reference position D of the camshaft 6 is detected and input to the digital counter 22. The contact 38, which measures the displacement of the base circle according to the shape of the cam piece 8 in accordance with the rotation of the cam shaft 6, comes into contact with the top portion T of the cam piece 8B, is detected, and the angle of the cam piece 8B is detected. Reference position D (= 0 °)
By comparing the values of the eccentric angles of the cams with each other, the cam shaft 6 having the cam piece 8 displaced by a certain standard or more is determined to be defective, so that the mounting accuracy can be guaranteed.

【0010】なお、本発明は、前記実施例に限定される
ものではなく、種々の変形実施が可能である。例えば、
図6に示すようにカムピ−ス8のトップ部Tに突起39を
設けてこの突起39に接触子38を当てて正確に測れるよう
にしてもよい。
The present invention is not limited to the above embodiment, but various modifications can be made. For example,
As shown in FIG. 6, a projection 39 may be provided on the top portion T of the cam piece 8 and a contactor 38 may be applied to the projection 39 for accurate measurement.

【0011】[0011]

【発明の効果】本発明は、焼結体からなる複数のカムピ
ースをこのカムピース間及び両端部に圧入固定されたジ
ャ−ナルとともに圧入固定したカムシャフトと、このカ
ムシャフトの両端部のジャーナルに嵌脱可能に取付けら
れるホルダと、このホルダの外側部に形成される溝に係
脱可能に取付けられる芯押台センタおよび主軸台センタ
と、前記主軸台センタと一体に形成される連結軸に接続
されるロ−タリエンコ−ダと、このロ−タリエンコ−ダ
に接続される角度表示器と、前記芯押台センタを取付け
る芯押台と、前記主軸台センタと芯押台センタの間に設
けられ接触子を有するダイヤルゲ−ジとを備えたことを
特徴とするカムシャフトのカム取付け角度測定装置であ
るから、カムシャフトのカム取付角度の精度を保証する
ことができると共にカムシャフトの端部のジャ−ナルに
孔をあけずにセンタ−に係合できるので品質の向上をは
かることができる。
According to the present invention, a plurality of cam pieces made of a sintered body are press-fitted and fixed together with journals press-fitted between the cam pieces and both ends thereof, and journals at both ends of the cam shaft are fitted. A holder that is detachably attached, a tailstock center and a headstock center that are detachably attached to a groove formed on the outer side of the holder, and a connecting shaft that is integrally formed with the headstock center. Rotary encoder, an angle indicator connected to the rotary encoder, a tailstock for mounting the tailstock center, and a contact provided between the headstock center and the tailstock center. Since the cam attachment angle measuring device for a cam shaft is provided with a dial gauge having a child, it is possible to guarantee the accuracy of the cam attachment angle of the cam shaft. The end of the cam shaft Ja - to the center without a hole to null - because it engages the can be improved in quality.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明のカム取付角度測定装置の一実施例を示
す一部切欠き側面図である。
FIG. 1 is a partially cutaway side view showing an embodiment of a cam attachment angle measuring device of the present invention.

【図2】本発明の測定装置の作動状態を示す一部切欠き
側面図である。
FIG. 2 is a partially cutaway side view showing an operating state of the measuring apparatus of the present invention.

【図3】本発明の試験体であるカムシャフトおよびホル
ダを示す斜視図である。
FIG. 3 is a perspective view showing a camshaft and a holder that are test bodies of the present invention.

【図4】本発明のホルダの縦断面図である。FIG. 4 is a vertical sectional view of the holder of the present invention.

【図5】本発明のダイヤルゲ−ジの使用状態を示す一部
切欠き側面図である。
FIG. 5 is a partially cutaway side view showing a usage state of the dial gauge of the present invention.

【図6】本発明の他の実施例の要部を示す斜視図であ
る。
FIG. 6 is a perspective view showing a main part of another embodiment of the present invention.

【図7】従来の心押台を示す側面図である。FIG. 7 is a side view showing a conventional tailstock.

【符号の説明】[Explanation of symbols]

6 カムシャフト 7 シャフト部 8 カムピ−ス 9 10 ジャ−ナル 13 主軸台 14 芯押台 16 主軸台センタ 20 連結軸 21 ロ−タリエンコ−ダ 22 デジタルカウンタ(角度表示器) 23 芯押台センタ23 28 第1のホルダ30 30 第2のホルダ 31 34 V溝 36 ダイアルゲ−ジ 38 接触子 6 Camshaft 7 Shaft part 8 Campiece 9 10 Journal 13 Headstock 14 Headstock 16 Headstock center 20 Connecting shaft 21 Rotary encoder 22 Digital counter (angle indicator) 23 Headstock center 23 28 1st holder 30 30 2nd holder 31 34 V groove 36 Dial gauge 38 Contact

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 焼結体からなる複数のカムピースをこの
カムピース間及び両端部に圧入固定されたジャ−ナルと
ともに圧入固定したカムシャフトと、このカムシャフト
の両端部のジャーナルに嵌脱可能に取付けられるホルダ
と、このホルダの外側部に形成される溝に係脱可能に取
付けられる芯押台センタおよび主軸台センタと、前記主
軸台センタと一体に形成される連結軸に接続されるロ−
タリエンコ−ダと、このロ−タリエンコ−ダに接続され
る角度表示器と、前記芯押台センタを取付ける芯押台
と、前記主軸台センタと芯押台センタの間に設けられ接
触子を有するダイヤルゲ−ジとを備えたことを特徴とす
るカムシャフトのカム取付角度測定装置。
1. A camshaft in which a plurality of cam pieces made of a sintered body are press-fitted and fixed together with a journal press-fitted between the cam pieces and both ends thereof, and removably attached to journals at both ends of the cam shaft. Holder, a tailstock center and a headstock center detachably attached to a groove formed on the outer side of the holder, and a roller connected to a connecting shaft integrally formed with the headstock center.
It has a Talyen coder, an angle indicator connected to this Rotary coder, a tailstock for mounting the tailstock center, and a contactor provided between the headstock center and the tailstock center. A cam attachment angle measuring device for a cam shaft, comprising a dial gauge.
JP19447591A 1991-08-02 1991-08-02 Camshaft cam mounting angle measuring device Expired - Lifetime JP2862103B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19447591A JP2862103B2 (en) 1991-08-02 1991-08-02 Camshaft cam mounting angle measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19447591A JP2862103B2 (en) 1991-08-02 1991-08-02 Camshaft cam mounting angle measuring device

Publications (2)

Publication Number Publication Date
JPH05209744A true JPH05209744A (en) 1993-08-20
JP2862103B2 JP2862103B2 (en) 1999-02-24

Family

ID=16325169

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19447591A Expired - Lifetime JP2862103B2 (en) 1991-08-02 1991-08-02 Camshaft cam mounting angle measuring device

Country Status (1)

Country Link
JP (1) JP2862103B2 (en)

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