JPS6055761B2 - Gear tooth profile and tooth trace measurement method and device - Google Patents
Gear tooth profile and tooth trace measurement method and deviceInfo
- Publication number
- JPS6055761B2 JPS6055761B2 JP52025098A JP2509877A JPS6055761B2 JP S6055761 B2 JPS6055761 B2 JP S6055761B2 JP 52025098 A JP52025098 A JP 52025098A JP 2509877 A JP2509877 A JP 2509877A JP S6055761 B2 JPS6055761 B2 JP S6055761B2
- Authority
- JP
- Japan
- Prior art keywords
- gear
- tooth
- measurement
- measured
- rotation angle
- 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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- A Measuring Device Byusing Mechanical Method (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、インボリュート歯形のみならず円弧歯形を有
する歯車等の歯形ならびに歯すじの測定に適用できる測
定方法及び装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a measuring method and apparatus that can be applied to measuring tooth profiles and tooth traces of gears and the like having not only involute tooth profiles but also circular arc tooth profiles.
従来、この種の歯車測定装置には歯車の歯切りにおける
創成法と同様の運動を測定装置に行なわせているものが
多い。Conventionally, many gear measuring devices of this type perform a motion similar to the generation method used in gear cutting.
すなわち、特開昭５１−３２６０号公報所載のものは、
テーブルに被測定歯車を取付け、テーブルの回転運動に
正確に同期させるようにインボリュート・プローブまた
はリード・プローブに歯車の歯切りの場合と同様の創成
運動をさせ、被測定歯車”の歯面が誤差のためのインボ
リュート・プローブまたはリード・プローブの創成運動
軌跡からすれるときは、その誤差量を検出する。That is, the one published in Japanese Patent Application Laid-Open No. 51-3260 is
The gear to be measured is mounted on the table, and the involute probe or reed probe is made to perform a generating motion similar to that used when cutting gears so as to accurately synchronize with the rotational movement of the table. When the involute probe or lead probe deviates from the generated motion trajectory, the amount of error is detected.
また、特開昭５０−５７４６９号公報所載のものは、被
測定歯車は回転させることなく固定しておき、立体座標
系を移動可能な探触子に歯車の歯切りの場合と同様な創
成運動をさせ、被測定歯車の歯面が誤差のため探触子の
創成運動軌跡からずれるときはその誤差量を検出する。In addition, in the method described in Japanese Patent Application Laid-open No. 50-57469, the gear to be measured is fixed without rotating, and a probe that can move in the three-dimensional coordinate system is created in the same manner as in the case of cutting gears. When the tooth surface of the gear to be measured deviates from the generated movement locus of the probe due to an error, the amount of error is detected.
しかしながら、このような創成運動を利用する従来装置
は、装置自体に精度の高いことが要求され経済的てない
ばかりでなく、装置の精度が十分でない場合にはそれが
歯車測定上の誤差となつて出てしまう欠点を免れない。
〔発明の目的〕本発明は、このような従来技術の欠点を
解消するためになされたもので、比較的簡単な機構によ
りインボリュート歯形は勿論、円弧歯形を有する歯車等
の歯形、歯すじの誤差の測定にも適用できる測定方法及
ひ装置を提供することを目的とする。However, conventional devices that utilize such generating motion are not only uneconomical because they require high precision in the device itself, but also cause errors in gear measurement if the device is not accurate enough. It is impossible to avoid the drawbacks that arise.
[Purpose of the Invention] The present invention has been made to eliminate the drawbacks of the prior art, and uses a relatively simple mechanism to eliminate errors in tooth profiles and tooth traces of gears having not only involute tooth profiles but also circular arc tooth profiles. The purpose is to provide a measuring method and device that can be applied to the measurement of
本発明は、測定される歯車に対しその動径方向及び歯幅
方向への移動が共に可能である単一の測定子を用い、こ
の測定子を測定される歯車の歯面に接触させ歯車を回転
させることによつて測定子を歯車の歯面上に従動滑走さ
せ、歯車の動径に対する歯車の回転角度を測定し、更に
このような歯形測定を歯幅方向に対して繰返して行なう
ことにより歯車を網目状に測定し、これによつて得られ
た各測定点における回転角度を、動径基準て算出した理
論上の回転角度と比較して両者の誤差を算出記録し、こ
の行のデータから歯形誤差を求め、また列のデータから
歯すじ誤差を求める歯車の歯形、歯すじ測定方法に関す
る。The present invention uses a single measuring element that can move in both the radial direction and the tooth width direction with respect to the gear to be measured, and brings this measuring element into contact with the tooth surface of the gear to be measured. By rotating the measuring head, the measuring head is driven to slide on the tooth surface of the gear, and the rotation angle of the gear with respect to the radius vector of the gear is measured.Furthermore, by repeatedly performing such tooth profile measurement in the tooth width direction, Measure the gear in a mesh pattern, compare the rotation angle obtained at each measurement point with the theoretical rotation angle calculated based on the radius vector, calculate and record the error between the two, and record the data in this row. This invention relates to a method for measuring the tooth profile and tooth trace of a gear, in which the tooth profile error is determined from the row data, and the tooth trace error is determined from the row data.
本発明の歯形測定においては、歯車の回転角度の原点を
、第１回目の測定時にこの歯車のピッチ円上に測定子が
おかれたときにこの測定子に歯車の歯面に接する角度を
零点とする。In the tooth profile measurement of the present invention, the origin of the rotation angle of the gear is the zero point, and the angle at which the probe touches the tooth surface of the gear when the probe is placed on the pitch circle of the gear during the first measurement is the zero point. shall be.
また、本発明は、回転角度がパルス信号によつて測定さ
れる主軸に測定される歯車を取付け、前記歯車の歯幅方
向に移動できると共に、該歯車に接触していて該歯車の
回転によつて従動し該歯車の歯面を滑走して該歯車の動
径方向に移動することもてきる単一の測定子を、前記歯
車の動径方向及び歯幅方向の距離をパルス信号によつて
測定する測定機構に、前記主軸に対し一定の距離だけオ
フセットするように設け、更に回転角度、動径及び歯幅
方向の移動量の各測定値を入力し、これらの測定値を理
論上の値と比較して両者の誤差を算出記録するデータ処
理部を設けた歯車の歯形、歯すじ測定装置に関する。In addition, the present invention provides a gear wheel whose rotation angle is measured by a pulse signal, which is attached to a main shaft, which is movable in the width direction of the gear, and which is in contact with the gear and is caused by the rotation of the gear. A single measuring element that is driven by the gear and can slide on the tooth surface of the gear and move in the radial direction of the gear is measured by a pulse signal to measure the distance in the radial direction and the width direction of the gear. The measuring mechanism to be measured is installed so as to be offset by a certain distance from the main axis, and the measured values of the rotation angle, radius vector, and amount of movement in the face width direction are input, and these measured values are calculated as theoretical values. The present invention relates to a gear tooth profile and tooth trace measuring device that is provided with a data processing unit that calculates and records errors between the two.
なお、本発明において７動径ョとは主軸の中心を極とし
て歯車の歯面上の各測定点の垂直方向への距離を指すも
のとする。In the present invention, the term 7-axis radius refers to the distance in the vertical direction of each measurement point on the tooth surface of the gear with the center of the main shaft as the pole.
次に本発明の実施例を説明する。 Next, embodiments of the present invention will be described.
円弧歯形を有する測定用の歯車１を取付ける主軸２は、
測定時この主軸２に取付けた歯車３にウ”オーム牡歯車
５，６を介して連結されたモーター７の駆動により回転
される。The main shaft 2 to which the measurement gear 1 having an arcuate tooth profile is mounted is
During measurement, it is rotated by a motor 7 connected to a gear 3 attached to the main shaft 2 via worm male gears 5 and 6.
この主軸２或いは歯車１の回転角度０は、主軸２に取付
けた歯車８に噛合するラック９の進退運動により直線移
動量に変換され、この移動量がエンコーダ１０のパルス
信号により測定される。一方、前記歯車１の歯面をトレ
ースする測定子１１は、測定機構１２のスライダー１４
に取付けられ、歯面を無理なく滑走するため主軸２に対
し一定距離１だけオフセットされた位置に設定されてい
る。This rotation angle 0 of the main shaft 2 or the gear 1 is converted into a linear movement amount by the forward and backward movement of the rack 9 meshing with the gear 8 attached to the main shaft 2, and this movement amount is measured by the pulse signal of the encoder 10. On the other hand, the measuring stylus 11 that traces the tooth surface of the gear 1 is connected to the slider 14 of the measuring mechanism 12.
It is installed at a position offset by a certain distance 1 from the main shaft 2 in order to smoothly slide on the tooth surface.
測定機構１２は、主軸２の軸方向に移動可能な移動台１
３にスライダ−１４が主軸２と直角方向に移動自在に設
けられ、このスライダー１４は、ウェイト１５により規
定の測定圧が附与されている。このため測定子１１は、
主軸２に対し軸と直角方向及び軸方向、または、測定さ
れる歯車１に対する動径方向及び歯幅方向への移動が可
能である。なお、ここでいう動径とは、主軸２の中心を
極として歯車１の歯面上の各測定点Ｐの垂直方向への距
離γを指す。各測定点Ｐにおける動径γは、スライダー
１４上に設けられたエンコーダ１６のパルス信号により
測定される。The measuring mechanism 12 includes a movable stage 1 that is movable in the axial direction of the main shaft 2.
3 is provided with a slider 14 movable in a direction perpendicular to the main shaft 2, and a prescribed measuring pressure is applied to the slider 14 by a weight 15. For this reason, the measuring head 11 is
It is possible to move in a direction perpendicular to the axis and in the axial direction with respect to the main shaft 2, or in a radial direction and a face width direction with respect to the gear 1 to be measured. Note that the radius vector herein refers to the distance γ of each measurement point P on the tooth surface of the gear 1 in the vertical direction with the center of the main shaft 2 as a pole. The vector radius γ at each measurement point P is measured by a pulse signal from an encoder 16 provided on the slider 14.
歯車１の歯幅方向に対する測定子１１の移動量ｈ１すな
わち、移動台１３の移動量ｈは、エンコーダ１７のパル
ス信号により測定される。以上の各測定値、すなわち、
動径γ、歯車１の回転角度０及び歯車１の歯幅方向に対
する測定子１１の移動量ｈは、それぞれパルス信号とし
てデータ処理部１８に導入される。The movement amount h1 of the measuring stylus 11 in the tooth width direction of the gear 1, that is, the movement amount h of the movable base 13, is measured by a pulse signal from the encoder 17. Each of the above measurements, i.e.
The vector radius γ, the rotation angle 0 of the gear 1, and the movement amount h of the measuring stylus 11 in the face width direction of the gear 1 are each introduced into the data processing unit 18 as pulse signals.
このデータ処理部１８は、記憶装置を有する小形デジタ
ルコンピュータ１９と、これに附属する周辺機器のイン
ターフェース２０、データタイプライタ２１及びＸ−Ｙ
ブロック２２から構成される。This data processing section 18 includes a small digital computer 19 having a storage device, an interface 20 of peripheral devices attached thereto, a data typewriter 21, and an X-Y
It is composed of block 22.
次に測定方法について説明する。Next, the measurement method will be explained.
歯車１の回転に伴い測定子１１は従動して歯車１の円弧
歯形に沿つて滑下、すなわち、歯車１の動径γ方向に移
動する。As the gear 1 rotates, the measuring stylus 11 follows and slides down along the arcuate tooth profile of the gear 1, that is, moves in the direction of the radius vector γ of the gear 1.
この際、エンコーダ１６により動径γの一定間隔毎にサ
ンプリングパルスを出し、このときの回転角度θ、移動
量γをそれぞれのエンコーダ１０，１７により測定し、
順次記憶して行く。この操作により歯車１の歯形方向に
一連のデータを得ることができる。そして、この操作を
移動台１３の移動に基つき歯車１の歯幅方向において順
次繰返し、歯面上に網目状の測定点を求める。（第２図
にその状況を示す）要するに、この測定は、歯車１の歯
面の網目状の各測定点Ｐにおける動径γ及び歯車１の歯
幅方向に対する測定子１１の移動量ｈに対する歯車１の
回転角度θの実測値を基に歯形、歯すじ誤差を測定する
ものである。At this time, the encoder 16 outputs sampling pulses at regular intervals of the radius vector γ, and the rotation angle θ and the movement amount γ at this time are measured by the respective encoders 10 and 17.
Memorize them sequentially. Through this operation, a series of data can be obtained in the direction of the tooth profile of the gear 1. Then, this operation is sequentially repeated in the tooth width direction of the gear 1 based on the movement of the movable table 13, and a mesh-like measurement point is obtained on the tooth surface. (The situation is shown in Fig. 2) In short, this measurement is based on the radius γ at each measurement point P on the tooth surface of the gear 1 and the amount of movement h of the measuring stylus 11 in the face width direction of the gear 1. The tooth profile and tooth trace errors are measured based on the actual measured value of the rotation angle θ of 1.
ところで、各測定値における原点は、前記のように動径
γは主軸２の中心であり、移動量ｈは測定開始時を零と
するのに対し、回転角度θは特に原点を持たない。Incidentally, the origin of each measured value is the center of the main shaft 2 for the radius vector γ as described above, and the movement amount h is zero at the start of measurement, whereas the rotation angle θ has no particular origin.
そこで、測定子１１が歯車１のピッチ円ＰＣＤ上に位置
するときこの測定子１１に歯車１の歯面が接する角度を
回転角度θの原点、すなわち、零点と設定する。したが
つて、第１回目の測定時に測定子１１が歯車１の歯先か
ら歯元にかけて滑下すると、この測定子１１が歯車１の
ピッチ円ＰＣＤ上を通過したとき回転角度０は零点を通
過したことになる。Therefore, when the measuring stylus 11 is positioned on the pitch circle PCD of the gear 1, the angle at which the tooth surface of the gear 1 contacts the measuring stylus 11 is set as the origin of the rotation angle θ, that is, the zero point. Therefore, when the measuring stylus 11 slides down from the tip to the root of the gear 1 during the first measurement, when the measuring stylus 11 passes over the pitch circle PCD of the gear 1, the rotation angle 0 passes through the zero point. That's what I did.
さて、このようにして得られた網目状のマトリックスを
基に（１）歯形誤差、（Ｉｉ）歯すじ誤差の測定を行な
う。（１）歯形誤差の測定
網目状のマトリックスより、歯形に相当する行イ，口・
・・卜のデータを取出し、この行イ，口・・・卜におけ
る動径γに対応する回転角度θとコンピュータ１９によ
りこの動径γ基準で算出した理論上の回転角度θ。Now, based on the mesh matrix thus obtained, (1) tooth profile error and (Ii) tooth trace error are measured. (1) Measurement of tooth profile error From the mesh matrix, rows corresponding to the tooth profile, mouth,
The data of .
との差を取り、歯面上の量に換算して歯形誤差を求める
。各行の測定点に基づきＸ−Ｙブロック２２は歯形誤差
を画き出す。（第３図ａ参照）（Ｉｉ）歯すじ誤差の測
定
網目状のマトリックスにより、列Ａ，Ｂ・・・Ｆのデー
タを取出し、この列Ａ，Ｂ・・・Ｆにおける移動量ｈに
対する回転角度θと、コンピュータ１９により移動量ｈ
から算出した理論上の回転角度θ。Find the tooth profile error by taking the difference between the two and converting it to the amount on the tooth surface. Based on the measurement points of each row, the X-Y block 22 delineates the tooth profile error. (Refer to Figure 3 a) (Ii) Measurement of tooth trace error Data in columns A, B...F is extracted from the mesh-like matrix, and the rotation angle for the movement amount h in the columns A, B...F is θ and the amount of movement h by the computer 19
The theoretical rotation angle θ calculated from
とを比較することによつて移動量ｈに対する歯すじ誤差
を求めることがてきる。列に相当する各測定点を演算す
ることにより連続した歯すじ誤差を求めることができる
。（第３図ｂ参照）〔発明の効果〕本発明は、測定され
る歯車に対する動径方向及び歯幅方向への移動が共に可
能である単一の測定子を歯車の歯面に接触させ、歯車を
回転させることによつて測定子をして歯車の歯面を滑走
させて歯車の動径に対する歯車の回転角度を測定し、更
にこの歯形測定を歯幅方向に対して繰返して行なうこと
により歯車を網目状に測定し、これによつて得られた各
測定点における回転角度を、動径基準で算出した理論上
の回転角度と比較して両者の誤差を算出記録し、この行
のデータから歯形誤差を、また列のデータから歯すじ誤
差を求めるようにしたから、従来技術のように測定を機
械的な或いは電気サーボ機構的な創成法によつて行なう
もののように装置の精度を高くすることを要しないばか
りでなく、対象とする歯車の歯形もインボリュート歯車
は勿論、円弧歯形等にも使用することができ、また径の
異なる円弧歯形の歯車に適用できる利点がある。By comparing the values, the tooth trace error for the movement amount h can be determined. Continuous tooth trace errors can be determined by calculating each measurement point corresponding to a row. (See Fig. 3b) [Effects of the Invention] The present invention provides a method in which a single measuring element, which is movable in both the radial direction and the face width direction with respect to the gear to be measured, is brought into contact with the tooth surface of the gear. By rotating the gear, the measuring stylus slides on the tooth surface of the gear to measure the rotation angle of the gear relative to the gear radius, and this tooth profile measurement is repeated in the tooth width direction. The gear is measured in a mesh pattern, and the rotation angle obtained at each measurement point is compared with the theoretical rotation angle calculated based on the radius vector, the error between the two is calculated and recorded, and the data in this row is Since the tooth profile error is calculated from the data and the tooth trace error is calculated from the row data, the precision of the device can be increased compared to the conventional technology, which uses mechanical or electric servomechanism generation methods. Not only is it not necessary to do this, the tooth profile of the target gear can be of course an involute gear, but also a circular arc tooth profile, and there is an advantage that it can be applied to gears with circular arc tooth profiles with different diameters.
更に、単一の測定子を、測定機構に、測定される歯車の
取付けられる主軸に対し一定距離オフセットするように
設けたから、測定子は歯車の歯面を無理なく滑走するこ
とができる利点がある。Furthermore, since the single measuring point is installed in the measuring mechanism so as to be offset by a certain distance from the main shaft on which the gear to be measured is attached, the measuring point has the advantage that it can easily slide on the tooth surface of the gear. .
なお、歯形測定における歯車の回転角度の原点を、第一
回目の測定時のピッチ円上に設定することによつて、デ
ータの処理を明確にすることができ、この歯面と他の歯
面の相互位置関係及びその歯面内での各点の状態が容易
に把握できる。By setting the origin of the rotation angle of the gear in tooth profile measurement on the pitch circle at the time of the first measurement, data processing can be made clearer, and this tooth surface and other tooth surfaces can be The mutual positional relationship between the two and the state of each point within the tooth surface can be easily grasped.
第１図は本発明の実施例の測定装置の説明図、第２図は
歯車の歯面の測定点を示す斜視図、第３図Ａ，ｂは第２
図に対応する各測定値と理論値との比較により得られた
歯形誤差、歯すじ誤差の線ノ図である。
１・・・・・・歯車、２・・・・・・主軸、１１・・・
・・・測定子、１２・・・・・・測定機構、１８・・・
・・・データ処理部、ｏ・・・・・・歯車１の回転角度
、γ・・・・・・動径、ｈ・・・・・・測定子１１の歯
幅方向への移動量、イ，口・・・卜・・・・・行、Ａ，
Ｂ・・・Ｆ・・・・・・列、ＰＣＤ・・・・・・歯車１
のピッチ円、ｌ・・・・・・オフセットする一定距離。Fig. 1 is an explanatory diagram of a measuring device according to an embodiment of the present invention, Fig. 2 is a perspective view showing measurement points on the tooth surface of a gear, and Fig. 3
It is a line diagram of the tooth profile error and the tooth trace error obtained by comparing each measured value and the theoretical value corresponding to the figure. 1...Gear, 2...Main shaft, 11...
... Measuring head, 12... Measuring mechanism, 18...
...Data processing unit, o...Rotation angle of gear 1, γ...Radius, h...Movement amount of gauge stylus 11 in the face width direction, i... , 口...卜...line, A,
B...F...Column, PCD...Gear 1
pitch circle, l... fixed distance to offset.
Claims (1)
移動が共に可能である単一の測定子を歯車の歯面に接触
させ、歯車を回転させることによつて測定子を歯車の歯
面を滑走させて歯車の動径に対する歯車の回転角度を測
定し、更にこの歯形測定を歯幅方向に対して繰返して行
なうことにより歯車を網目状に測定し、これによつて得
られた各測定点における回転角度を、動径基準で算出し
た理論上の回転角度と比較して両者の誤差を算出記録し
、この行のデータから歯形誤差を、また列のデータから
歯すじ誤差を求める歯車の歯形、歯すじ測定方法。 ２ 歯形測定において、歯車の回転角度の原点を、第１
回目の測定時にこの歯車のピッチ円上に測定子がおかれ
たときにこの測定子に歯車の歯面が接する角度を零点と
する特許請求の範囲第１項記載の歯車の歯形、歯すじ測
定方法。 ３ 回転角度がパルス信号によつて測定される主軸に、
測定される歯車を取付け、前記歯車の歯幅方向に移動で
きると共に、該歯車に接触して該歯車の回転によつて従
動し該歯車の歯面を滑走して該歯車の動径方向に移動す
ることもできる単一の測定子を、前記歯車の動径方向及
び歯幅方向の距離をパルス信号によって測定する測定機
構に、前記主軸に対し一定距離オフセットするように設
け、更に回転角度、動径及び歯幅方向の移動量の各測定
値を入力し、これからの測定値を理論上の値と比較して
両者の誤差を算出記録するデータ処理部を設けた歯車の
歯形、歯すじ測定装置。[Claims] 1. Measurement by bringing a single measuring element, which can move both in the radial direction and the width direction of the gear to be measured, into contact with the tooth surface of the gear and rotating the gear. The rotation angle of the gear with respect to the gear radius is measured by sliding the tooth surface of the gear, and this tooth profile measurement is repeated in the face width direction to measure the gear in a mesh pattern. The rotation angle obtained at each measurement point is compared with the theoretical rotation angle calculated based on the radius vector, and the error between the two is calculated and recorded. Gear tooth profile and tooth trace measurement method for finding trace error. 2 In tooth profile measurement, set the origin of the gear rotation angle to the first
Tooth profile and tooth trace measurement of a gear according to claim 1, where the zero point is the angle at which the tooth surface of the gear contacts the gauge head when the gauge head is placed on the pitch circle of the gear during the second measurement. Method. 3. On the main axis, the rotation angle of which is measured by a pulse signal,
A gear to be measured is attached and can be moved in the tooth width direction of the gear, as well as being in contact with the gear and being driven by the rotation of the gear, sliding on the tooth surface of the gear and moving in the radial direction of the gear. A single measuring point, which can also be used to measure the distance in the radial direction and width direction of the gear, is installed in a measuring mechanism that measures the distance in the radial direction and the width direction of the gear using pulse signals, so as to be offset by a certain distance with respect to the main axis. A gear tooth profile and tooth trace measuring device equipped with a data processing unit that inputs each measured value of the amount of movement in the radial and tooth width directions, compares the measured value with the theoretical value, and calculates and records the error between the two. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP52025098A JPS6055761B2 (en) | 1977-03-08 | 1977-03-08 | Gear tooth profile and tooth trace measurement method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP52025098A JPS6055761B2 (en) | 1977-03-08 | 1977-03-08 | Gear tooth profile and tooth trace measurement method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS53110555A JPS53110555A (en) | 1978-09-27 |
| JPS6055761B2 true JPS6055761B2 (en) | 1985-12-06 |
Family
ID=12156444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP52025098A Expired JPS6055761B2 (en) | 1977-03-08 | 1977-03-08 | Gear tooth profile and tooth trace measurement method and device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6055761B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202012011761U1 (en) | 2012-11-27 | 2013-01-11 | Horst Knäbel | Device for checking a sprocket |
| CN103994744B (en) * | 2014-06-06 | 2017-02-15 | 陕西法士特齿轮有限责任公司 | Tooth profile measuring method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS513260A (en) * | 1974-05-30 | 1976-01-12 | Illinois Tool Works |
-
1977
- 1977-03-08 JP JP52025098A patent/JPS6055761B2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS513260A (en) * | 1974-05-30 | 1976-01-12 | Illinois Tool Works |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS53110555A (en) | 1978-09-27 |
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