JP2641582B2 - Dimension measuring device - Google Patents
Dimension measuring deviceInfo
- Publication number
- JP2641582B2 JP2641582B2 JP2018499A JP1849990A JP2641582B2 JP 2641582 B2 JP2641582 B2 JP 2641582B2 JP 2018499 A JP2018499 A JP 2018499A JP 1849990 A JP1849990 A JP 1849990A JP 2641582 B2 JP2641582 B2 JP 2641582B2
- Authority
- JP
- Japan
- Prior art keywords
- arm
- measuring
- measurement
- casing
- measuring device
- 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
Links
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は寸法測定装置に係り、特に寸法測定装置の測
定アームと測定ヘッドとの連結部分を弾性材料で覆うこ
とにより測定ヘッドの防塵性及び防水性を図った寸法測
定装置に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dimension measuring device, and more particularly, to covering a connecting portion between a measuring arm and a measuring head of the dimension measuring device with an elastic material to improve the dustproofness of the measuring head. The present invention relates to a dimension measuring device that is waterproof.
一般に、工場等の生産ラインでワークの寸法計測に使
用される自動定寸装置や自動検装置等の寸法測定装置
は、加工、工作時における切削水や、切粉等が測定ヘッ
ド内部に侵入しないように測定ヘッドと測定アームとの
間をゴムブーツ等の弾性材料で覆うことで防塵性及び防
水性を確保している。第２図（ａ）は従来の寸法測定装
置における測定ヘッド10と測定アーム12との関係を示し
た側面図、第２図（ｂ）は正面図である。第２図（ａ）
及び（ｂ）に示すように従来の寸法測定装置の測定アー
ム12の断面は、測定ヘッドの幅を狭くする必要のある場
合は測定アーム12の剛性確保のため楕円状に形成されて
おり、測定ヘッドと測定アームとを覆うゴムブーツ14も
アーム12の形状に適合するように楕円状の空孔が形成さ
れている。Generally, dimension measuring devices such as an automatic sizing device and an automatic inspection device used for measuring the size of a workpiece on a production line in a factory or the like do not allow cutting water, chips, etc. during processing and machining to enter the inside of the measuring head. As described above, the space between the measurement head and the measurement arm is covered with an elastic material such as a rubber boot, so that dustproofness and waterproofness are ensured. FIG. 2A is a side view showing the relationship between the measuring head 10 and the measuring arm 12 in the conventional dimension measuring apparatus, and FIG. 2B is a front view. Fig. 2 (a)
And (b), the cross section of the measuring arm 12 of the conventional dimension measuring device is formed in an elliptical shape in order to secure the rigidity of the measuring arm 12 when it is necessary to reduce the width of the measuring head. An elliptical hole is also formed in the rubber boot 14 covering the head and the measurement arm so as to conform to the shape of the arm 12.
しかしながら、測定アーム12の断面を楕円状に加工す
るには、手加工で行わねばならず、手間がかかるという
問題がある。また、ゴムブーツ14が楕円状に形成されて
いるため、測定アーム12が測定等で上下動したときに、
ゴムブーツ14の伸縮量が場所毎に不均一となり、測定ア
ーム12とゴムブーツ14との密着性が悪化する場合があ
る。密着が悪くなると、測定ヘッド10に異物等が侵入し
やすくなり防塵性及び防水性が低下する。加えて、測定
アーム12が上下動した場合、ゴムブーツ14の変形量が大
きいため、ゴムブーツ14の弾性力が測定アーム12を変形
させ、測定精度を悪化させるという欠点がある。However, processing the cross section of the measurement arm 12 into an elliptical shape has to be performed manually, which is troublesome. Further, since the rubber boot 14 is formed in an elliptical shape, when the measuring arm 12 moves up and down due to measurement or the like,
In some cases, the amount of expansion and contraction of the rubber boot 14 becomes uneven at each location, and the adhesion between the measurement arm 12 and the rubber boot 14 may be deteriorated. If the adhesion is poor, foreign matter or the like easily enters the measuring head 10, and the dustproofness and waterproofness are reduced. In addition, when the measurement arm 12 moves up and down, the deformation of the rubber boot 14 is large, so that the elastic force of the rubber boot 14 deforms the measurement arm 12 and deteriorates the measurement accuracy.
本発明はこのような事情に鑑みてなされたもので、測
定アームの剛性を確保することができるとともに、測定
ヘッドの防塵性及び防水性を向上させることができ、測
定精度の高い寸法測定装置を提供することを目的とす
る。The present invention has been made in view of such circumstances, and it is possible to secure the rigidity of the measuring arm, improve the dustproofness and waterproofness of the measuring head, and provide a dimension measuring device with high measurement accuracy. The purpose is to provide.
本発明は、前記目的を達成するために、測定ヘッドの
ケーシング内部から外側へと延出する測定アームを有
し、該測定アームの先端が被測定物と接触することによ
って被測定物の寸法を測定する寸法測定装置において、
前記測定アームは前記ケーシング内に位置する内アーム
と、ケーシングの外側に位置する外アームと、を備え、
該内アームと外アームとを測定アームの移動方向に離間
した少なくとも２本以上の円形断面状の平行な連結軸で
連結し、前記連結軸と前記ケーシングとの隙間を弾性材
料で覆ったことを特徴としている。In order to achieve the above object, the present invention has a measuring arm extending from the inside of the casing of the measuring head to the outside, and the tip of the measuring arm comes in contact with the measured object to reduce the size of the measured object. In a dimension measuring device to measure,
The measurement arm includes an inner arm located inside the casing, and an outer arm located outside the casing,
The inner arm and the outer arm are connected by at least two or more parallel connection shafts having a circular cross section separated in the moving direction of the measurement arm, and a gap between the connection shaft and the casing is covered with an elastic material. Features.
本発明によれば、ケーシング内に位置する内アーム
と、ケーシングの外側に位置する外アームとを少なくと
も２本以上の円形断面状の連結軸を平行に配置して、該
連結軸で内アームと外アームとを連結するようにしてい
る。このため、内アームと外アームが平行な連結軸によ
って一体化され、測定アームの重量の増加を抑えなが
ら、測定アームの剛性を高めることができる。また、連
結軸が円形断面なので、測定アームが上下動した場合
に、弾性材料の伸縮量が均一となるので、弾性材料の測
定アームに対する密着性を高めることができる。これに
より、測定ヘッドの防水性・防塵性を向上させることが
できる。According to the present invention, at least two or more connecting shafts having a circular cross section are arranged in parallel with the inner arm located inside the casing and the outer arm located outside the casing, and the inner arm and the inner arm are connected with the connecting shaft. It connects to the outer arm. For this reason, the inner arm and the outer arm are integrated by the parallel connection shaft, and the rigidity of the measurement arm can be increased while suppressing an increase in the weight of the measurement arm. Further, since the connecting shaft has a circular cross section, when the measurement arm moves up and down, the amount of expansion and contraction of the elastic material becomes uniform, so that the adhesion of the elastic material to the measurement arm can be improved. Thereby, waterproofness and dustproofness of the measuring head can be improved.
以下、添付図面に従って本発明に係る寸法測定装置の
好ましい実施例を説明する。Hereinafter, a preferred embodiment of a dimension measuring device according to the present invention will be described with reference to the accompanying drawings.
第１図は本発明に係る寸法測定装置の測定ヘッドと測
定アームとの関係を示した断面図である。測定ヘッド16
のケーシング18内部には被測定物の寸法を測定する内ア
ーム20Aが配設され、内アーム20Aの上下動により、被測
定物の寸法測定を行う。また、内アーム20Aには第１図
に示すように、円形断面を有する２本の連結軸22、24が
平行に取り付けられており、連結軸22、24はケーシング
18に所定のクリアランスを有するように穿設された孔を
貫通し、連結時22、24は一定量の上下動が可能となって
いる。ケーシング18と連結軸22、24との間にはゴムブー
ツ（弾性材料）26、28がケーシング18の隙間を塞ぐため
連結軸22、24とケーシング18との隙間に嵌入されてお
り、ケーシング18の防塵及び防水が図られている。更
に、ケーシング18の外側において、連結軸22、24は外ア
ーム20Bに固定されており、内アーム20Aと外アーム20B
は連結軸22、24を介して連結され全体として測定アーム
を構成している。FIG. 1 is a sectional view showing the relationship between a measuring head and a measuring arm of a dimension measuring apparatus according to the present invention. Measuring head 16
An inner arm 20A for measuring the size of the object to be measured is disposed inside the casing 18 of the above, and the dimension of the object to be measured is measured by the vertical movement of the inner arm 20A. As shown in FIG. 1, two connecting shafts 22 and 24 having a circular cross section are attached in parallel to the inner arm 20A.
The hole 18 penetrates a hole formed so as to have a predetermined clearance, and can be moved up and down by a fixed amount at the time of connection. Rubber boots (elastic material) 26 and 28 are inserted between the casing 18 and the connecting shafts 22 and 24 in the gap between the connecting shafts 22 and 24 and the casing 18 so as to close the gap between the casing 18. And waterproof. Further, outside the casing 18, the connecting shafts 22, 24 are fixed to the outer arm 20B, and the inner arm 20A and the outer arm 20B are fixed.
Are connected via connecting shafts 22 and 24 to constitute a measuring arm as a whole.
前記の如く構成した本発明に係る寸法測定装置の作用
は以下の通りである。測定時、外アーム20Bは被測定物
に接触しながら上下に移動して測定を行うが、このとき
の移動量は、測定ヘッド16に配置された電気マイクロメ
ータ、トランスジューサ等によって電気信号に変換さ
れ、寸法測定装置の管制部に出力される。The operation of the dimension measuring device according to the present invention configured as described above is as follows. During measurement, the outer arm 20B moves up and down while making contact with the object to be measured, and the measurement is performed.The amount of movement at this time is converted into an electric signal by an electric micrometer, a transducer, and the like disposed on the measuring head 16. Is output to the control unit of the dimension measuring device.
そして、測定アーム20Bの上下動とともに連結軸22、2
4、測定アーム20Aが上下し、これに伴ってケーシング18
と連結軸22、24との間をカバーしているゴームブーツ2
6、28が伸縮する。ゴムブーツ26、28は円形断面を有す
る連結軸22、24に適合するように円形の空孔を有するよ
うに形成されているため、従来の楕円状の測定アームに
適合するよう形成されたゴムブーツと比較して夫々のゴ
ムブーツ26、28に生じる伸縮量は均一となる。これによ
り、ゴムブーツ26、28と連結軸22、24との密着性が高ま
り、測定ヘッド16の防水性、防塵性を向上させることが
できる。Then, the connecting shafts 22 and 2 are moved together with the vertical movement of the measuring arm 20B.
4.The measuring arm 20A moves up and down, and the casing 18
Boots 2 covering between the shafts 22 and 24
6, 28 expand and contract. Since the rubber boots 26 and 28 are formed to have circular holes so as to fit the connecting shafts 22 and 24 having a circular cross section, they are compared with rubber boots formed to fit conventional elliptical measuring arms. Then, the amount of expansion and contraction generated in each of the rubber boots 26 and 28 becomes uniform. Thereby, the adhesion between the rubber boots 26 and 28 and the connecting shafts 22 and 24 is increased, and the waterproofness and dustproofness of the measuring head 16 can be improved.
また、測定アームの重量の増加を抑えながら、測定ア
ーム全体の剛性が向上しているので、測定アーム20A、2
0Bはゴムブーツ26、28の弾性力の影響を受けることがな
く、精度の高い寸法測定が可能となる。更に、連結軸2
2、24は断面が円形なので、加工が容易であるという利
点がある。加えて、測定アーム20A及び20B間を連結軸2
2、24によって連結することにより、測定アーム全体の
剛性が高まり、測定時のアームの撓みがなくなる。この
場合、平行軸の定理により連結軸22、24を中心線から離
せば離す程、測定アーム全体の剛性を向上させることが
できる。In addition, the rigidity of the entire measurement arm has been improved while suppressing an increase in the weight of the measurement arm.
0B is not affected by the elastic force of the rubber boots 26 and 28, and enables highly accurate dimensional measurement. Furthermore, connecting shaft 2
Since the sections 2 and 24 have a circular cross section, they have the advantage of easy processing. In addition, connecting shaft 2 between measuring arms 20A and 20B
The connection by 2 and 24 increases the rigidity of the entire measurement arm and eliminates bending of the arm during measurement. In this case, the rigidity of the entire measurement arm can be improved as the connection shafts 22 and 24 are separated from the center line by the parallel axis theorem.
以上説明したように本発明に係る寸法測定装置によれ
ば、内アームと、外アームとを少なくとも２本以上の円
形断面状の連結軸によって連結して測定アームを構成
し、連結軸とケーシングとの隙間を弾性材料で覆うよう
にしている。このため、測定アーム重量の増加を抑えな
がら、測定アームの剛性を向上させることができ、測定
精度が向上する。また、弾性材料の密着性が高いため、
測定時に測定アームが上下動した場合でも防塵性及び防
水性を保つことができる。As described above, according to the dimension measuring device of the present invention, the inner arm and the outer arm are connected to each other by at least two or more circular connecting shafts having a circular cross section to form a measuring arm. Is covered with an elastic material. Therefore, the rigidity of the measurement arm can be improved while suppressing an increase in the weight of the measurement arm, and the measurement accuracy is improved. Also, due to the high adhesion of the elastic material,
Even if the measurement arm moves up and down during measurement, dustproofness and waterproofness can be maintained.
第１図は本発明に係る寸法測定装置の測定ヘッドと測定
アームとの関係を示した断面図、第２図（ａ）は従来の
寸法測定装置における測定ヘッドと測定アームとの関係
を示した側面図、第２図（ｂ）は第２図（ａ）の正面図
である。 16……測定ヘッド、18……ケーシング、 20A……内アーム、20B……外アーム、 22、24……連結軸、26、28……ゴムブーツ（弾性材
料）。FIG. 1 is a sectional view showing the relationship between a measuring head and a measuring arm of a dimension measuring device according to the present invention, and FIG. 2 (a) shows the relationship between a measuring head and a measuring arm in a conventional dimension measuring device. FIG. 2 (b) is a front view of FIG. 2 (a). 16 Measurement head, 18 Casing, 20A Inner arm, 20B Outer arm, 22, 24 Connection shaft, 26, 28 Rubber boot (elastic material).
Claims (1)
延出する測定アームを有し、該測定アームの先端が被測
定物と接触することによって被測定物の寸法を測定する
寸法測定装置において、 前記測定アームは前記ケーシング内に位置する内アーム
と、ケーシングの外側に位置する外アームと、を備え、
該内アームと外アームとを、測定アームの移動方向に離
間した少なくとも２本以上の連結軸で連結し、前記連結
軸と前記ケーシングとの隙間を弾性材料で覆ったことを
特徴とする寸法測定装置。1. A dimension measuring device having a measuring arm extending from the inside of a casing of a measuring head to the outside, wherein a tip of the measuring arm contacts a measured object to measure a size of the measured object. The measurement arm includes an inner arm located inside the casing, and an outer arm located outside the casing,
The inner arm and the outer arm are connected by at least two or more connecting shafts separated in the moving direction of the measuring arm, and a gap between the connecting shaft and the casing is covered with an elastic material. apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018499A JP2641582B2 (en) | 1990-01-29 | 1990-01-29 | Dimension measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018499A JP2641582B2 (en) | 1990-01-29 | 1990-01-29 | Dimension measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03223603A JPH03223603A (en) | 1991-10-02 |
| JP2641582B2 true JP2641582B2 (en) | 1997-08-13 |
Family
ID=11973317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2018499A Expired - Lifetime JP2641582B2 (en) | 1990-01-29 | 1990-01-29 | Dimension measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2641582B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0959235A2 (en) | 1998-05-20 | 1999-11-24 | Hitachi, Ltd. | Gas turbine power plant |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1157436B (en) * | 1982-02-23 | 1987-02-11 | Finike Italiana Marposs | HEAD FOR THE CONTROL OF THE LINEAR DIMENSIONS OF MECHANICAL PIECES |
-
1990
- 1990-01-29 JP JP2018499A patent/JP2641582B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0959235A2 (en) | 1998-05-20 | 1999-11-24 | Hitachi, Ltd. | Gas turbine power plant |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03223603A (en) | 1991-10-02 |
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