JPH0632562Y2 - Concentricity measuring device - Google Patents

Concentricity measuring device

Info

Publication number
JPH0632562Y2
JPH0632562Y2 JP1988115809U JP11580988U JPH0632562Y2 JP H0632562 Y2 JPH0632562 Y2 JP H0632562Y2 JP 1988115809 U JP1988115809 U JP 1988115809U JP 11580988 U JP11580988 U JP 11580988U JP H0632562 Y2 JPH0632562 Y2 JP H0632562Y2
Authority
JP
Japan
Prior art keywords
hole
center
concentricity
measuring
seat surface
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 - Lifetime
Application number
JP1988115809U
Other languages
Japanese (ja)
Other versions
JPH0237308U (en
Inventor
冨士夫 中谷
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.)
Daihatsu Motor Co Ltd
Original Assignee
Daihatsu Motor Co Ltd
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 Daihatsu Motor Co Ltd filed Critical Daihatsu Motor Co Ltd
Priority to JP1988115809U priority Critical patent/JPH0632562Y2/en
Publication of JPH0237308U publication Critical patent/JPH0237308U/ja
Application granted granted Critical
Publication of JPH0632562Y2 publication Critical patent/JPH0632562Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、棒状をしたワークの端面に穿設したセンタ穴
の、穴部とシート面との同心度を測定するための同心度
測定装置に関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention is a concentricity measuring device for measuring the concentricity between a hole and a seat surface of a center hole formed in an end surface of a rod-shaped workpiece. It is about.

〔従来の技術〕[Conventional technology]

一般に、棒状をしたワーク、例えば4サイクルエンジン
に用いるカムシャフトの表面に、切削加工等の所望の加
工を施す場合には、ワークの両端面に、ワークを工作機
械上に回転自在にセットするためのセンタ穴を形成して
おく。このセンタ穴(1)は、一般に、第3図に示す如
く、ワーク(A)の軸心上に穿設された円柱状の穴部
(2)と、この穴部(2)の開口端部に形成した、所定
の円すい角を持ったテーパ状のシート面(3)とからな
っている。そして、ワーク(A)の表面への加工時に
は、工作機械に装備されているセンタのテーパ面を、上
記センタ穴(1)のシート面(3)に接触させることに
より、ワーク(A)を工作機械上に回転自在に支持する
ようにしてある。
Generally, when a desired work such as a cutting work is performed on a surface of a rod-shaped work, for example, a camshaft used in a 4-cycle engine, the work is rotatably set on a machine tool on both end surfaces of the work. Form the center hole of. The center hole (1) is generally a cylindrical hole (2) formed on the axis of the work (A) and an opening end of the hole (2) as shown in FIG. And a tapered seat surface (3) having a predetermined cone angle. When the surface of the work (A) is machined, the work (A) is machined by bringing the center taper surface of the machine tool into contact with the seat surface (3) of the center hole (1). It is rotatably supported on the machine.

〔考案が解決しようとする課題〕[Problems to be solved by the device]

上記した如く、棒状をしたワーク(A)の両端部に、穴
部(2)とシート面(3)とからなるセンタ穴(1)を
穿設する場合に於いて、上記穴部(2)及びシート面
(3)を一つの工具によって一度に形成する場合は特に
問題はないが、加工の都合上、穴部(2)の形成と、シ
ート面(3)の形成とを別個の工具を用いて別工程にて
行う場合には、センタ穴(1)の形成後、穴部(2)の
中心と、シート面(3)の中心とが正確に一致している
か否かを測定する必要がある。しかし、穴部(2)の中
心とシート面(3)の中心とを1回の測定にて同時に測
定し、両者のズレを検出することは非常に困難である。
このため、従来は、センタ穴(1)の加工を終えたワー
ク(A)を三次元測定機上に固定し、測定機上に於ける
穴部(2)の中心の位置、及び、シート面(3)の中心
の位置を求めた後、両者間のズレを検出しているため、
この測定作業が非常に煩雑になるといった問題があっ
た。又、三次元測定機は高価な装置であるため、上記測
定を手軽に行えないといった問題もあった。
As described above, when the center hole (1) consisting of the hole (2) and the seat surface (3) is formed at both ends of the rod-shaped work (A), the hole (2) is formed. There is no particular problem when the sheet surface (3) is formed by one tool at a time, but for the convenience of processing, the formation of the hole (2) and the formation of the sheet surface (3) are performed separately. In the case of using a separate process, it is necessary to measure whether or not the center of the hole (2) and the center of the seat surface (3) are exactly aligned after forming the center hole (1). There is. However, it is very difficult to measure the center of the hole (2) and the center of the sheet surface (3) at the same time by one measurement to detect the deviation between the two.
For this reason, conventionally, the work (A) after the machining of the center hole (1) is fixed on the coordinate measuring machine, and the center position of the hole (2) on the measuring machine and the sheet surface are fixed. After the position of the center of (3) is obtained, the deviation between the two is detected,
There is a problem that this measurement work becomes very complicated. Further, since the coordinate measuring machine is an expensive device, there is a problem that the above measurement cannot be easily performed.

〔課題を解決するための手段〕[Means for Solving the Problems]

ワーク端面に穿設した、円柱状をした穴部と、穴部の開
口端部に設けたテーパ状をしたシート面とからなるセン
タ穴の、上記穴部とシート面との同心度を測定する同心
度測定装置を、センタ台上にセットされる、円板状をし
た基部、及び、基部から一体として前方に向って突出
し、かつ前部外周面がセンタ穴のシート面と接触するテ
ーパ面をなし、半径方向外方に開口する凹溝を形成した
センタ部を有する装置本体と、先端部が上記センタ部の
前方に突出するようにして上記装置本体の凹溝内に中間
部を支点にして上記軸線に直交する方向に搖動自在に支
承され、かつ上記先端部上に、センタ穴の穴部内周面と
接触する測定子を該穴部内周面と直交する方向に突設さ
せた測定アームと、上記測定アームの上記直交方向の搖
動量を検出するため、上記装置本体の基部に測定子を介
してセットされるダイヤルゲージとによって構成したも
のである。
Measure the concentricity between the hole and the seat surface of a center hole consisting of a cylindrical hole formed in the end surface of the work and a tapered seat surface provided at the open end of the hole. The concentricity measuring device is set on a center stand, and has a disk-shaped base, and a taper surface protruding integrally from the base toward the front and having a front outer peripheral surface in contact with the seat surface of the center hole. None, an apparatus main body having a center portion in which a groove is formed that opens outward in the radial direction, and an intermediate portion is used as a fulcrum in the concave groove of the apparatus body so that the tip portion projects forward of the center portion. A measuring arm which is rotatably supported in a direction orthogonal to the axis and which has a probe contacting the inner peripheral surface of the hole portion of the center hole, which is provided on the distal end portion so as to project in a direction orthogonal to the inner peripheral surface of the hole portion. , To detect the amount of swing of the measuring arm in the orthogonal direction It is obtained constituted by a dial gauge that is set via the measuring element at the base of the apparatus main body.

〔作用〕[Action]

上記構成をした同心度測定装置の装置本体センタ部のテ
ーパ面に、ワーク端面に穿設したセンタ穴のシート面を
接触させると共に、検出アームの測定子をセンタ穴の穴
部内周面に接触させ、この状態で、ワークをセンタ穴の
シート面を中心に回転させ、この時、測定アームに生じ
る揺動をダイヤルゲージにて検出するよことにより、セ
ンタ穴の穴部とシート面との同心度を測定するものであ
る。
With the taper surface of the center part of the main body of the concentricity measuring device configured as described above, the sheet surface of the center hole formed in the work end surface is brought into contact, and the probe of the detection arm is brought into contact with the inner peripheral surface of the hole portion of the center hole. In this state, the work is rotated around the seat surface of the center hole, and the swing generated in the measuring arm at this time is detected by the dial gauge, so that the concentricity between the hole of the center hole and the seat surface Is measured.

〔実施例〕〔Example〕

第1図は、本考案に係る同心測定装置(B)をセンタ台
(10)上にセットした状態を示すものである。同図に於い
て、(11)は装置本体であり、この装置本体(11)は、図示
の如く、センタ台(10)上に安定した状態で固定される円
板状をした基部(12)と、基部(12)の中央部から前方に向
って突出し、かつ、前部外周面に、センタ穴(1)のシ
ート面(3)と接触するテーパ面(13a)を有するセンタ
部(13)と、センタ部(13)の先端から前方に向って突出し
た、センタ穴(1)の穴部(2)より小径の筒状部(14)
とからなっている。(15)は装置本体(11)の基部(12)内に
形成した中空部、(16)は装置本体(11)のセンタ部(13)及
び筒状部(14)に形成した、上記中空部(15)と連なる凹溝
であり、この凹溝(16)は、センタ部(13)及び筒状部(14)
の外周面に開口するようにしてある。(17)は凹溝(16)内
に挿入したシャフト(18)の中心を支点(P)として、中
空部(15)及び凹溝(16)内に揺動自在に支持された測定ア
ーム、(19)は測定アーム(17)の先端に突設させた測定子
であり、この測定子(19)は、凹溝(16)の開口部から筒状
部(14)の外周に突出し、その先端中央に設けた測定点
(m)が、センタ穴(1)の穴部(2)内周面と接触す
るようにしてある。(20)は装置本体基部(12)の径方向に
穿設された、上記中空部(15)と連通するゲージ穴、(21)
は上記ゲージ穴(20)内にシャフト部(21a)を挿入固定す
ることにより、装置本体(11)の基部(15)に保持されるダ
イヤルゲージであり、このダイヤルゲージ(21)の先端に
位置する測定子(21b)は、測定アーム(17)の後端に設け
た検出点(n)と接触するようにしてある。尚、この実
施例の場合、測定アーム(17)の後端に設けた検出点
(n)から支点(P)までの距離と、測定アーム(1
7)の先端に設けた測定点(m)から支点(P)までの距
とは等しくなるようにしてある。
FIG. 1 shows a concentric measuring device (B) according to the present invention on a center stand.
(10) It shows the state set above. In the figure, (11) is an apparatus main body, and this apparatus main body (11) is a disk-shaped base (12) which is stably fixed on the center stand (10) as shown in the figure. And a center portion (13) protruding forward from the central portion of the base portion (12) and having a taper surface (13a) on the outer peripheral surface of the front portion, which is in contact with the seat surface (3) of the center hole (1). And a cylindrical portion (14) projecting forward from the tip of the center portion (13) and having a diameter smaller than that of the hole portion (2) of the center hole (1).
It consists of (15) is a hollow portion formed in the base portion (12) of the device body (11), (16) is the hollow portion formed in the center portion (13) and the tubular portion (14) of the device body (11) The groove (16) is connected to the central part (13) and the cylindrical part (14).
The outer peripheral surface is opened. (17) is a measurement arm that is swingably supported in the hollow portion (15) and the groove (16) with the center of the shaft (18) inserted in the groove (16) as a fulcrum (P). 19) is a probe that is provided at the tip of the measuring arm (17), and this probe (19) protrudes from the opening of the concave groove (16) to the outer periphery of the tubular portion (14) and its tip. The measurement point (m) provided at the center is in contact with the inner peripheral surface of the hole (2) of the center hole (1). (20) is a gauge hole communicating with the hollow portion (15), which is bored in the radial direction of the apparatus body base (12), (21)
Is a dial gauge held by the base portion (15) of the device body (11) by inserting and fixing the shaft portion (21a) in the gauge hole (20), and is positioned at the tip of this dial gauge (21). The tracing stylus (21b) is adapted to come into contact with the detection point (n) provided at the rear end of the measuring arm (17). In the case of this embodiment, the distance 1 from the detection point (n) provided at the rear end of the measurement arm (17) to the fulcrum (P) and the measurement arm (1
The distance 2 from the measuring point (m) provided at the tip of 7) to the fulcrum (P) is made equal.

上記構成に於いて、本考案に係る同心度測定装置によ
り、ワーク(A)の端面に穿設したセンタ穴(1)の穴
部(2)とシート面(3)との同心度を測定するには、
第2図に示す如く、ワーク(A)の一方の端面に設けた
センタ穴(1)のシート面(3)を、同心度測定装置
(B)の装置本体センタ部(13)のテーパ面(13a)に接触
させることにより、ワーク(A)の一方の端部を、同心
度測定装置(B)によって支持すると共に、ワーク
(A)の他方の端面に設けたセンタ穴(1)に、通常の
センタ(C)を挿入し、ワーク(A)の他方の端部をセ
ンタ(C)によって支持する。又、この時、装置本体(1
1)内に収納した検出アーム(17)の測定点(n)に、ダイ
ヤルゲージ(21)先端の測定子(21b)を接触させると共
に、測定点(m)をセンタ穴(1)の穴部(2)の内周
面に接触させておく。この状態で、ワーク(A)を任意
の手段で回転させれば、ワーク(A)は、センタ穴
(1)のシート面(3)を回転中心として回転する。そ
してこの時、同心度測定装置(B)側に支持されたセン
タ穴(1)の、穴部(2)の中心とシート面(3)の中
心とが正確に一致していれば、ワーク(A)の回転中、
穴部(2)の内周面と測定点(m)が接触している測定
アーム(17)は静止したままとなり、ダイヤルゲージ(21)
の指針も振れないため、穴部(2)の中心とシート面
(3)の中心とが正確に一致していることが判る。又、
穴部(2)の中心とシート面(3)の中心とが一致して
いなければ、ワーク(A)の回転に伴って測定アーム(1
7)が揺動し、この揺動動作によってダイヤルゲージ(21)
の指針が振れるため、穴部(2)の中心とシート面
(3)の中心とが一致していないことを検出できる。
尚、この時、測定アーム(17)の検出点(n)から支点
(P)までの距離と、測定点(m)から支点(P)
までの距離とは等しくしてあるため、ダイヤルゲー
ジ(21)の表示値が、そのまま穴部(2)の中心とシート
面(3)の中心とのズレ量として表示される。このよう
にして、ワーク(A)の一方の端面に形成したセンタ穴
(1)の穴部(2)とシート面(3)との同心度の測定
が終了すると、今度は、ワーク(A)の他方の端面に形
成したセンタ穴(1)を同心度測定装置(B)にセット
し、今測定が終了したセンタ穴(1)をセンタ(C)に
セットした後、上記と同様にして他方の端面に形成した
センタ穴(1)の穴部(2)とテーパ面(3)との同心
度を測定すればよい。
In the above configuration, the concentricity measuring device according to the present invention measures the concentricity between the hole portion (2) of the center hole (1) formed in the end surface of the work (A) and the seat surface (3). Has
As shown in FIG. 2, the seat surface (3) of the center hole (1) provided on one end surface of the work (A) is connected to the taper surface (13) of the center portion (13) of the main body of the concentricity measuring device (B). 13a), one end of the work (A) is supported by the concentricity measuring device (B), and the center hole (1) provided on the other end face of the work (A) is usually The center (C) is inserted, and the other end of the work (A) is supported by the center (C). At this time, the device body (1
1) The measuring point (n) of the detection arm (17) housed in 1) is brought into contact with the contact point (21b) at the tip of the dial gauge (21), and the measuring point (m) is located in the center hole (1). Keep in contact with the inner peripheral surface of (2). In this state, if the work (A) is rotated by an arbitrary means, the work (A) rotates about the seat surface (3) of the center hole (1) as the center of rotation. At this time, if the center of the hole (2) and the center of the seat surface (3) of the center hole (1) supported on the concentricity measuring device (B) side are exactly aligned, the work ( During the rotation of A),
The measuring arm (17) in contact with the inner peripheral surface of the hole (2) and the measuring point (m) remains stationary, and the dial gauge (21)
It can be seen that the center of the hole (2) and the center of the seat surface (3) are exactly aligned with each other because the pointer does not move. or,
If the center of the hole (2) and the center of the seat surface (3) do not match, the measurement arm (1
7) swings, and this swinging motion causes the dial gauge (21) to
Since the pointer moves, it can be detected that the center of the hole (2) and the center of the seat surface (3) do not coincide.
At this time, the distance 1 from the detection point (n) of the measuring arm (17) to the fulcrum (P) and the measurement point (m) to the fulcrum (P)
Since it is equal to the distance 2 up to, the displayed value of the dial gauge (21) is displayed as it is as the amount of deviation between the center of the hole (2) and the center of the seat surface (3). In this way, when the measurement of the concentricity between the hole portion (2) of the center hole (1) formed on one end surface of the work (A) and the seat surface (3) is completed, this time, the work (A) is The center hole (1) formed on the other end face of the is set in the concentricity measuring device (B), and the center hole (1) for which measurement has just been completed is set in the center (C), and then the other is performed in the same manner as above. The concentricity between the hole portion (2) of the center hole (1) formed on the end face of and the tapered surface (3) may be measured.

尚、上記実施例は、測定アーム(17)の検出点(n)から
支点(P)までの距離と、測定点(m)から支点
(P)までの距離とを等しくした例について説明し
たが、とは上記以外の比率にしてもよいのは
勿論である。
The above embodiment describes an example in which the distance 1 from the detection point (n) of the measuring arm (17) to the fulcrum (P) is equal to the distance 2 from the measurement point (m) to the fulcrum (P). However, it goes without saying that 1 and 2 may have a ratio other than the above.

〔考案の効果〕[Effect of device]

上記した如く、本考案に係る同心度測定装置を用いれ
ば、装置本体センタ部のテーパ面に、ワーク端面に穿設
したセンタ穴のシート面を接触させると共に、測定アー
ムの測定子を、センタ穴の穴部内周面に接触させ、この
状態で、ワークをセンタ穴のシート面を中心として回転
させ、この時、測定アームに生じる揺動をダイヤルゲー
ジによって検出するといった非常に簡単な作業により、
センタ穴の穴部とシート面との同心度を測定することが
可能となる。又、本考案に係る同心度測定装置は、セン
タ穴のシート面と接触するテーパ面及び測定アームを有
する装置本体と、この装置本体にセットされるダイヤル
ゲージとによって構成されており、その構造が非常にシ
ンプルなため、安価に製造することが可能であるのみな
らず旋盤の主軸ベッド側にそのまま容易に装着して使用
できる実用性の極めて優れたものである。
As described above, when the concentricity measuring device according to the present invention is used, the sheet surface of the center hole formed in the end face of the work is brought into contact with the taper surface of the center part of the device body, and the contact point of the measuring arm is adjusted to the center hole. In this state, the work is rotated around the seat surface of the center hole, and at this time, the swing that occurs in the measuring arm is detected by a dial gauge,
It is possible to measure the concentricity between the hole portion of the center hole and the seat surface. The concentricity measuring device according to the present invention is composed of a device body having a taper surface that contacts the seat surface of the center hole and a measuring arm, and a dial gauge set in the device body. Since it is very simple, it can be manufactured at low cost, and it is extremely practical in that it can be easily attached and used as it is on the spindle bed side of a lathe.

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

第1図は本考案に係る同心度測定装置を示す断面図、第
2図はその使用状態を示す断面図、第3図はセンタ穴の
1例を示す断面図である。 (A)……ワーク、(1)……センタ穴、 (2)……穴部、(3)……シート面、 (B)……同心度測定装置、(11)……装置本体、 (12)……基部、(13)……センタ部、 (13a)……テーパ面、(17)……測定アーム、 (19)……測定子、(21)……ダイヤルゲージ。
FIG. 1 is a sectional view showing a concentricity measuring device according to the present invention, FIG. 2 is a sectional view showing its usage state, and FIG. 3 is a sectional view showing an example of a center hole. (A) …… Workpiece, (1) …… Center hole, (2) …… Hole part, (3) …… Seat surface, (B) …… Concentricity measuring device, (11) …… Device body, ( 12) ... Base, (13) ... Center, (13a) ... Tapered surface, (17) ... Measuring arm, (19) ... Sensor, (21) ... Dial gauge.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】ワーク端面に穿設した円柱状をした穴部
と、穴部の開口端部に設けたテーパ状をしたシート面と
からなるセンタ穴の、上記穴部とシート面との同心度を
測定する同心度測定装置を、 センタ台上にセットされる円板状をした基部及び基部か
ら一体として前方に向って突出し、かつ前部外周面がセ
ンタ穴のシート面と接触するテーパ面をなし、半径方向
外方に開口する凹溝を形成したセンタ部を有する装置本
体と、 先端部が上記センタ部の前方に突出するようにして上記
装置本体の凹溝内に中間部を支点にして上記軸線に直交
する方向に搖動自在に支承され、かつ上記先端部上に、
センタ穴の穴部内周面と接触する測定子を該穴部内周面
と直交する方向に突設させた測定アームと、上記測定ア
ームの上記直交方向の搖動量を検出するため、上記装置
本体の基部に測定子を介してセットされるダイヤルゲー
ジとによって構成したことを特徴とする同心度測定装
置。
1. A center hole consisting of a cylindrical hole formed in the end face of a workpiece and a tapered seat surface provided in the open end of the hole, and the concentricity of the hole and the seat surface. A concentricity measuring device for measuring the degree of concentricity is a disk-shaped base that is set on the center stand and a taper surface that projects forward from the base as a unit and the front outer surface contacts the seat surface of the center hole. And a device main body having a center portion formed with a concave groove that opens outward in the radial direction, and an intermediate portion is a fulcrum in the concave groove of the device main body so that the tip portion projects forward of the center portion. Is swingably supported in a direction orthogonal to the axis, and on the tip,
A measuring arm having a probe contacting the inner peripheral surface of the hole portion of the center hole and protruding in a direction orthogonal to the inner peripheral surface of the hole portion, and the amount of swinging of the measuring arm in the orthogonal direction are detected. A concentricity measuring device comprising a dial gauge set on a base via a probe.
JP1988115809U 1988-09-01 1988-09-01 Concentricity measuring device Expired - Lifetime JPH0632562Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988115809U JPH0632562Y2 (en) 1988-09-01 1988-09-01 Concentricity measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988115809U JPH0632562Y2 (en) 1988-09-01 1988-09-01 Concentricity measuring device

Publications (2)

Publication Number Publication Date
JPH0237308U JPH0237308U (en) 1990-03-12
JPH0632562Y2 true JPH0632562Y2 (en) 1994-08-24

Family

ID=31357794

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988115809U Expired - Lifetime JPH0632562Y2 (en) 1988-09-01 1988-09-01 Concentricity measuring device

Country Status (1)

Country Link
JP (1) JPH0632562Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016203590B4 (en) 2015-03-04 2022-06-30 Mitutoyo Corporation Measuring device and supporting mechanism of a columnar workpiece

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS433731Y1 (en) * 1965-08-31 1968-02-16
IT1028674B (en) * 1975-06-19 1979-02-10 Finike Italiana Marposs EQUIPMENT FOR MEASURING ERRORS OF CONCENTRICITY RELATIVE TO TWO ROTATION SURFACES

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016203590B4 (en) 2015-03-04 2022-06-30 Mitutoyo Corporation Measuring device and supporting mechanism of a columnar workpiece

Also Published As

Publication number Publication date
JPH0237308U (en) 1990-03-12

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