JP3682748B2 - Workpiece reference hole inspection device - Google Patents

Workpiece reference hole inspection device Download PDF

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Publication number
JP3682748B2
JP3682748B2 JP28459197A JP28459197A JP3682748B2 JP 3682748 B2 JP3682748 B2 JP 3682748B2 JP 28459197 A JP28459197 A JP 28459197A JP 28459197 A JP28459197 A JP 28459197A JP 3682748 B2 JP3682748 B2 JP 3682748B2
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JP
Japan
Prior art keywords
inspection
positioning
workpiece
hole
cylinder head
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
Application number
JP28459197A
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Japanese (ja)
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JPH11108601A (en
Inventor
耕二 内田
達盛 大前
秀明 古田
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.)
Honda Motor Co Ltd
Original Assignee
Honda 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
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Priority to JP28459197A priority Critical patent/JP3682748B2/en
Publication of JPH11108601A publication Critical patent/JPH11108601A/en
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Publication of JP3682748B2 publication Critical patent/JP3682748B2/en
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Description

【0001】
【発明の属する技術分野】
本発明はシリンダヘッドのようなワークに設けた位置決め孔の検査装置に関する。
【0002】
【従来の技術】
例えばダイカスト鋳造法によって形成したシリンダヘッドには、その後の加工に際して加工機へ正しく取付けたり、あるいはシリンダブロックと組付けるためにこれらの各面に幾つもの位置決め基準孔が設けられていて、これらは事前にチェックされる。
【0003】
これらのチェックは、実開昭56−166507号公報に見られるように、被測定物の上にセットプレートを位置決め載置した上、ロッドの下端に支持した測定子を基準孔に挿通してその挿入状態や測定子相互の間隔をダイヤルゲージにより測定して基準孔の位置や精度等を検査するようにし、さらに、これらの基準孔がワークの他の側面や上下面に設けられているような場合には、コ字状のセットプレートを用いるか、あるいはセットプレートをワークの他の面に付け替えるかしてこれらのこれらの基準孔についての検査をするようにしている。
【0004】
このため、基準孔が複数の面に多数設けられているシリンダヘッドのようなワークにおいてはこの種の検査にかなりの時間を要するばかりでなく、セットプレートをその都度付け替えて行なうため検査の精度にも支障を及ぼすといった問題も派生する。
【0005】
【発明が解決しようとする課題】
本発明はこのような問題に鑑みてなされたもので、その目的とするところは、各面に設けた基準孔の状態あるいはピッチ等を単一の検査工程をもって効率よく検査することのできる新たなワークの基準孔検査装置を提供することにある。
【0006】
【課題を解決するための手段】
すなわち、本発明はこのような課題を達成するためのワークの基準孔検査装置として、ワークの一面に設けた基準孔と係合してワークを位置決めする位置決めピンを備えた基準台に、載置したワークの上面及び少なくとも2つの側面のそれぞれに対向する検査用プレートを立設するとともに、該各検査用プレートのそれぞれに、ワーク上の各位置決め孔に挿入する検査棒挿通用の孔を対向する上記各位置決め孔に対応させて設け、上記検査棒挿通用の孔の外端に、上記検査棒の一部と当接して該検査棒とワークの位置決め孔との間に検査のための軸振れを生じさせる斜面を設けたものである。
【0007】
【発明の実施の形態】
そこで以下に本発明の実施例について説明する。
図1、図2はシリンダヘッドに設けた位置決め孔の位置精度あるいは孔の状態等を検査する装置として構成した本発明の一実施例を示したものである。
【0008】
図において符号1は、シリンダヘッドを正確に位置決め載置するための基準台で、この基準台1のシリンダヘッドを載置する部分の面2には複数の位置決めピン3‥‥が立設されていて、シリンダヘッドの下面に予め形成された位置決め基準孔をこれらの位置決めピン3‥‥に係合させることによってシリンダヘッドを正確に位置決めするように構成されてる。
【0009】
一方、この基準台1には、載置面2を挟むようにしてその両側に一対の側面検査用プレート5、6が立設され、さらに、その一方の検査用プレート6にはその上端に、シリンダヘッドの上面を検査する上面検査用プレート7がシリンダヘッドの上方へ延出するようにして一体的に設けられている。
【0010】
ところで、図中符号10はこれらの各検査用プレート5、6、7に設けた検査孔で、これらの検査孔10は、各検査用プレート5、6、7に嵌着したブッシュ11として構成された上、シリンダヘッドの両側面及び上面に設けた各位置決め孔に対応するように配設されていて、これらの検査孔10からシリンダヘッドの各位置決め孔に挿入した検査棒15によって位置決め孔の位置精度、成形精度等が検査できるように構成されている。
【0011】
このため、これらの検査孔10を構成する各ブッシュ11には、図3(a)に示したように、その外端に緩い傾斜面12が付されていて、検査棒15に設けたフランジ16内側の傾斜面をこの傾斜面12に当接させて回動させることにより、検査棒15に歳差運動を起こさせ、その先端が位置決め孔hに接触するか否かによって各位置決め孔の位置精度及び軸心ずれが検出できるように、さらにはこれらの深さが検出できるように構成されている。
【0012】
このように構成された実施例において、図示しないハンガーにより搬送されてきたシリンダブロックを、その位置決め基準孔を基準台1上の位置決めピン2‥‥に係止するようにして基準台1上に載置すると、シリンダヘッドの側面と上面に設けた各位置決め孔は、側面検査用プレート5、6と上面検査用プレート7のそれぞれに設けた各ブッシュ11と対向するようにして正確に位置決め固定される。
【0013】
したがって、この状態のもとで各検査孔10を通して各検査棒15をシリンダヘッドWの対応する位置決め孔内に挿入して回転させると、ブッシュ11の外端に設けた傾斜面12と当接するフランジ16内側の傾斜面はこれと一体の検査棒15に歳差運動を行わせ、それぞれ回転させた角度により先端を位置決め孔hの内面に接触させて、それぞれの位置決め孔hの位置精度や軸心ずれを正しく検査できるとともに、これらの深さをも同時に検査することができる。
【0014】
なお、以上はシリンダヘッドに設けた位置決め孔を検査対象とした実施例により本発明を説明したものであるが、各面に位置決め孔を有するワークであればシリンダヘッド以外のいかなるワークに対しても本発明を適用することができることは言うまでもなく、また、両側面だけでなく前後面に設けた位置決め孔をも同時に検査することのできるよう、側面検査用プレート5、6のほかに前後面検査用プレートを設けるようにすることも可能である。
【0015】
またさらに、検査棒に歳差運動を生じさせる機構としては、ブッシュの端面に接するフランジを検査棒の軸心に対して所定の角度だけ傾斜させて固定するように構成することもできる。
【0016】
【発明の効果】
以上述べたように本発明によれば、ワークを位置決め固定する位置決めピンを設けた基準台上に、ワークの上面と少くとも2つの側面と対向する検査用プレートを立設して、これらの各検査用プレートに検査棒を挿入する挿通孔をワークの位置決め孔に対応させて設けたので、ワークを基準台上に位置決め載置した上、各検査用プレートの挿通孔を通してワークの位置決め孔に検査棒を挿入するだけの操作により、ワークの各面に設けた位置決め孔の位置精度及び孔の成形状態さらにはこれらの深さまでも、各検査用プレートに設けた挿通孔とこれらに挿入する検査棒を基準として同時にかつ効率よく検査することができて、この種の検査作業を大巾に簡素化することができ、しかも、これらの挿通孔の外端に、検査棒に検査用の軸振れを生じさせる斜面を設けたので、挿通孔に挿通した検査棒を回転させてその先端を位置決め孔の内壁に接触させることにより、各位置決め孔の位置精度等をさらに精度よく検査することができる。
【図面の簡単な説明】
【図1】本発明の一実施例を示す装置の側面図である。
【図2】(a)乃至(c)は同上装置の上面図とその両側面を示した図である。
【図3】位置決め孔の検査状態を示した図である。
【符号の説明】
1 基準台
2 位置決めピン
5、6 側面検査用プレート
7 上面検査用プレート
10 検査棒挿入孔
11 ブッシュ
12 傾斜面
15 検査棒
16 フランジ
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a positioning hole inspection device provided in a workpiece such as a cylinder head.
[0002]
[Prior art]
For example, a cylinder head formed by die casting has a number of positioning reference holes on each of these surfaces for proper mounting to a processing machine during subsequent processing or assembly with a cylinder block. Checked.
[0003]
As shown in Japanese Utility Model Laid-Open No. 56-166507, these checks are performed by positioning a set plate on the object to be measured and inserting a measuring element supported on the lower end of the rod through the reference hole. Measure the position and accuracy of the reference holes by measuring the insertion state and the distance between the measuring elements using a dial gauge. Furthermore, these reference holes are provided on the other side and upper and lower surfaces of the workpiece. In some cases, these reference holes are inspected by using a U-shaped set plate or by replacing the set plate with the other surface of the workpiece.
[0004]
For this reason, not only a considerable amount of time is required for this type of inspection in a workpiece such as a cylinder head in which a large number of reference holes are provided on a plurality of surfaces, but the inspection accuracy is increased because the set plate is replaced each time. The problem of causing troubles also derives.
[0005]
[Problems to be solved by the invention]
The present invention has been made in view of such problems, and the object of the present invention is to provide a new method that can efficiently inspect the state or pitch of the reference holes provided on each surface in a single inspection process. An object of the present invention is to provide a workpiece reference hole inspection device.
[0006]
[Means for Solving the Problems]
That is, the reference hole inspection device of a work for the present invention is to achieve such an object, the reference table having a positioning pin engages a reference hole provided on one surface of the workpiece to position the workpiece mounting An inspection plate facing each of the upper surface and at least two side surfaces of the placed workpiece is set up, and an inspection rod insertion hole to be inserted into each positioning hole on the workpiece is opposed to each inspection plate. to provided corresponding to the respective positioning holes, the outer end of the hole for the inspection bar inserting the shaft for inspection between a portion and the contact with the test stick and the work positioning hole of the test stick It is provided with a slope that causes runout .
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Therefore, examples of the present invention will be described below.
FIG. 1 and FIG. 2 show an embodiment of the present invention configured as an apparatus for inspecting the position accuracy of a positioning hole provided in a cylinder head or the state of the hole.
[0008]
In the figure, reference numeral 1 denotes a reference base for accurately positioning and mounting the cylinder head, and a plurality of positioning pins 3 are erected on the surface 2 of the reference base 1 where the cylinder head is mounted. Thus, the cylinder head is accurately positioned by engaging a positioning reference hole formed in advance on the lower surface of the cylinder head with these positioning pins 3.
[0009]
On the other hand, a pair of side surface inspection plates 5, 6 are erected on both sides of the reference table 1 so as to sandwich the mounting surface 2. Further, one inspection plate 6 has a cylinder head at its upper end. An upper surface inspection plate 7 for inspecting the upper surface of the cylinder is integrally provided so as to extend above the cylinder head.
[0010]
By the way, reference numeral 10 in the figure is an inspection hole provided in each of these inspection plates 5, 6, 7, and these inspection holes 10 are configured as bushes 11 fitted to each of the inspection plates 5, 6, 7. In addition, the position of the positioning hole is set by the inspection rod 15 inserted into each of the positioning holes of the cylinder head from the inspection holes 10 so as to correspond to the positioning holes provided on both side surfaces and the upper surface of the cylinder head. It is configured so that accuracy, molding accuracy, etc. can be inspected.
[0011]
For this reason, as shown in FIG. 3A, each bush 11 constituting these inspection holes 10 has a slanted inclined surface 12 at its outer end, and a flange 16 provided on the inspection rod 15. By rotating the inner inclined surface in contact with the inclined surface 12, the inspection rod 15 is caused to precess, and the position accuracy of each positioning hole is determined depending on whether or not the tip contacts the positioning hole h. In addition, the depth can be detected so that the misalignment can be detected.
[0012]
In the embodiment configured as described above, a cylinder block conveyed by a hanger (not shown) is placed on the reference table 1 so that its positioning reference hole is locked to the positioning pins 2 on the reference table 1. Then, the positioning holes provided in the side surface and the upper surface of the cylinder head are accurately positioned and fixed so as to face the bushes 11 provided in the side surface inspection plates 5 and 6 and the upper surface inspection plate 7, respectively. .
[0013]
Accordingly, when each inspection rod 15 is inserted into the corresponding positioning hole of the cylinder head W through the inspection hole 10 and rotated under this state, the flange comes into contact with the inclined surface 12 provided at the outer end of the bush 11. The inclined surface on the inside 16 makes the precession of the inspection rod 15 integrated therewith, and the tip is brought into contact with the inner surface of the positioning hole h by the rotated angle, respectively, and the positioning accuracy and axial center of each positioning hole h The displacement can be correctly inspected, and these depths can be inspected at the same time.
[0014]
Although the present invention has been described with reference to the embodiment in which the positioning hole provided in the cylinder head is an inspection object, any workpiece other than the cylinder head can be used as long as it has a positioning hole on each surface. Needless to say, the present invention can be applied, and in addition to the side surface inspection plates 5 and 6, for front and rear surface inspection, it is possible to inspect not only both side surfaces but also the positioning holes provided on the front and rear surfaces. It is also possible to provide a plate.
[0015]
Further, as a mechanism for causing precession in the inspection rod, the flange contacting the end surface of the bush can be fixed at a predetermined angle with respect to the axis of the inspection rod.
[0016]
【The invention's effect】
As described above, according to the present invention, the inspection plate facing the upper surface of the workpiece and at least two side surfaces is erected on the reference table provided with the positioning pins for positioning and fixing the workpiece. The insertion hole for inserting the inspection rod into the inspection plate is provided corresponding to the positioning hole of the workpiece, so that the workpiece is positioned on the reference table and then inspected into the positioning hole of the workpiece through the insertion hole of each inspection plate. By simply inserting the rod, the positioning accuracy of the positioning hole provided on each surface of the workpiece, the molding state of the hole, and even at these depths, the insertion hole provided in each inspection plate and the inspection rod inserted into these This type of inspection can be greatly simplified at the same time, and the runout for inspection can be applied to the inspection rods at the outer ends of these insertion holes. Raw Is provided with the slope is, by contacting the tip to the inner wall of the positioning hole of the test stick which is inserted into the insertion hole is rotated, Ru can position accuracy of the positioning holes further accurately inspected.
[Brief description of the drawings]
FIG. 1 is a side view of an apparatus showing an embodiment of the present invention.
FIGS. 2A to 2C are a top view of the apparatus and a view showing both side surfaces thereof.
FIG. 3 is a view showing an inspection state of a positioning hole.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Reference stand 2 Positioning pin 5, 6 Side surface inspection plate 7 Upper surface inspection plate 10 Inspection rod insertion hole 11 Bush 12 Inclined surface 15 Inspection rod 16 Flange

Claims (1)

ワークの一面に設けた基準孔と係合して該ワークを位置決めする位置決めピンを備えた基準台に、載置したワークの上面及び少なくとも2つの側面のそれぞれに対向する検査用プレートを立設するとともに、該各検査用プレートのそれぞれに、ワーク上の各位置決め孔に挿入する検査棒挿通用の孔を対向する上記各位置決め孔に対応させて設け、上記検査棒挿通用の孔の外端に、上記検査棒の一部と当接して該検査棒とワークの位置決め孔との間に検査のための軸振れを生じさせる斜面を設けたことを特徴とするワークの基準孔検査装置。  An inspection plate facing each of the upper surface and at least two side surfaces of the mounted workpiece is erected on a reference table provided with a positioning pin for positioning the workpiece by engaging with a reference hole provided on one surface of the workpiece. In addition, each inspection plate is provided with an inspection rod insertion hole to be inserted into each positioning hole on the work corresponding to each of the opposing positioning holes, and is provided at the outer end of the inspection rod insertion hole. A workpiece reference hole inspection apparatus, wherein a slope is formed between the inspection rod and a positioning hole of the workpiece so as to abut against a part of the inspection rod to generate a shaft runout for inspection.
JP28459197A 1997-10-01 1997-10-01 Workpiece reference hole inspection device Expired - Fee Related JP3682748B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28459197A JP3682748B2 (en) 1997-10-01 1997-10-01 Workpiece reference hole inspection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28459197A JP3682748B2 (en) 1997-10-01 1997-10-01 Workpiece reference hole inspection device

Publications (2)

Publication Number Publication Date
JPH11108601A JPH11108601A (en) 1999-04-23
JP3682748B2 true JP3682748B2 (en) 2005-08-10

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103994704B (en) * 2014-06-09 2016-09-07 马鞍山方圆动力科技有限公司 Position detecting tool
CN112146553B (en) * 2020-09-24 2022-06-10 贵州凯星液力传动机械有限公司 Design method and use method of inner inclined hole position size measuring device

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