JPH0821702A - Cylindrical shape measuring device - Google Patents

Cylindrical shape measuring device

Info

Publication number
JPH0821702A
JPH0821702A JP15451994A JP15451994A JPH0821702A JP H0821702 A JPH0821702 A JP H0821702A JP 15451994 A JP15451994 A JP 15451994A JP 15451994 A JP15451994 A JP 15451994A JP H0821702 A JPH0821702 A JP H0821702A
Authority
JP
Japan
Prior art keywords
cylindrical
disk
measuring
displacement sensor
shape measuring
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.)
Withdrawn
Application number
JP15451994A
Other languages
Japanese (ja)
Inventor
Masaji Kitade
Keiichi Nakajima
慶一 中島
正司 北出
Original Assignee
Mitsubishi Heavy Ind Ltd
三菱重工業株式会社
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 Heavy Ind Ltd, 三菱重工業株式会社 filed Critical Mitsubishi Heavy Ind Ltd
Priority to JP15451994A priority Critical patent/JPH0821702A/en
Publication of JPH0821702A publication Critical patent/JPH0821702A/en
Withdrawn legal-status Critical Current

Links

Abstract

PURPOSE:To reduce the area of installation, and to conduct measurement accurately regarding a cylindrical shape measuring device measuring the shape of the external surface of cylindrical body. CONSTITUTION:A cylindrical specimen 1 is fixed onto a load rod 5 through a jig 4, a bearing fixing disk 6 is fixed onto the outer circumference of the rod 5, and a rotary disk 10 is mounted rotatably around the disk 6. A driving motor 11 is attached to the rotary disk 10 through a metal fitting 12, and brought into contact with the fixed disk 6 by a rubber pulley 18, thus rotating the rotary disk 10. An angle detector 14 and a displacement sensor 21 are further set up to the disk 10, and turned together with the disk 10, thus continuously measuring the angle of rotation and the displacement (irregularities) of the circumferential external surface of the cylindrical specimen 1 accurately, then measuring a shape by arithmetic processing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylindrical shape measuring device for measuring the shape of the outer surface of a cylindrical object.

[0002]

2. Description of the Related Art FIG. 6 is a front view of a conventional cylindrical object shape measuring apparatus, and FIG. 7 is a CC arrow view thereof. As shown in both figures, an independent shape measuring device was installed around the fixed base portion 07 of the cylindrical object 01 as the object to be measured, and the shape was measured. That is, the rotary gear 02 is fixed to the fixed disk 0 via the bearing 03.
4 is rotatably mounted, and the fixed discs 04 are attached to a plurality of (four in FIG. 7) supporting metal pieces 05, and the supporting metal pieces 05 are fixed to a fixed base portion 07 by a mount 06.

A drive motor 011 is attached to the support hardware 05, and the gear of its rotation shaft and the rotation gear 02 mesh with each other.
The rotary gear 02 is driven. Further, an angle detector 014 is attached to the support metal 05, and the gear is driven by the drive motor 01.
The rotation amount driven by 1, that is, the rotation angle is detected. Similarly, a displacement sensor 021 is attached, and by rotating the rotary gear 02 with the drive motor 011 the shape around the cylindrical object 01, which is the object to be measured, can be measured. That is, the displacement sensor 021 rotates around the cylindrical object 01 together with the rotating gear by the driving of the drive motor 011 and at the same time, the rotation angle is also detected by the angle detector 014. Therefore, the outer surface of the cylindrical object 01 corresponding to the rotational angle is detected. The shape (concavity and convexity) of can be acquired as continuous data by the displacement sensor 021.

[0004]

The conventional shape measuring device for a cylindrical object has the following problems.

Since it is necessary to install a separate shape measuring device that is independent of the cylindrical object that is the object to be measured, it is necessary to install it on the floor surface. On the contrary, the circumference of the object to be measured is occupied by the installation of the shape measuring device, and other space for use is narrowed.

Furthermore, if there is no floor surface on which a measuring device other than the object to be measured can be installed separately, additional equipment for installing the measuring device separately is required.

When the measuring device is newly installed or the measuring device is moved by exchanging the object to be measured or the like, the axis of the measuring device and the axis of the object to be measured do not always coincide with each other, resulting in poor reproducibility.

[0008]

In order to solve such a problem, the present invention mounts a bearing fixing disk on a load rod for fixing a cylindrical object to be measured, and a rotating plate is provided around the disk. An angle detector and a displacement sensor are attached to the rotating plate, and the displacement of the outer surface of the cylindrical object is measured by rotating the rotating plate.
The configuration is such that it is input to the arithmetic processing unit together with the angle detection data and arithmetic processing is performed to measure the shape of the cylindrical object.

That is, the present invention relates to (1) a cylindrical shape measuring apparatus for measuring the shape of a cross-section outer surface of a cylindrical object, a load rod for fixing the cylindrical object, and a bearing fixing for fixing to the outer peripheral surface of the load rod. A disk, a rotating plate installed around the load rod and rotatable, a drive motor installed on the rotating plate and applying a rotational force to the rotating plate around the bearing fixed disk, and the rotating plate The angle detector installed, the displacement sensor installed on the rotary plate, the angle and displacement data detected by the angle detector and the displacement sensor are arithmetically processed to obtain the shape measurement result of the outer surface of the cylindrical object. There is provided a cylindrical shape measuring device characterized by comprising an arithmetic processing device for extracting.

Further, (2) in the above invention (1),
Provided is a cylindrical shape measuring device characterized in that the rotational force of the drive motor is transmitted by contacting an outer peripheral surface of a bearing fixing disk with a rubber pulley.

(3) In the invention of (1) above, there is also provided a cylindrical shape measuring device characterized in that the position of the displacement sensor can be moved up and down with respect to a cylindrical object.

[0012]

According to the present invention, according to the above-mentioned means, in the invention of (1), when the drive motor is driven, the rotary plate rotates on the outer circumference of the bearing fixed disc. An angle detector attached to the rotary plate detects the rotation angle of the rotary plate around the cylinder, and at the same time, a displacement sensor detects the displacement of the outer surface around the cylinder, and these data are calculated. The shape of the outer surface of the cylindrical object can be continuously obtained by inputting it to the processing device and performing arithmetic processing. In addition, the results of these measured shapes can be displayed on the display device, if necessary.

Further, in the invention of (2), since the rotational force of the drive motor is transmitted to the rubber pulley which rotates in contact with the outer periphery of the bearing fixed disc, the rotary plate on which the drive motor is fixed can be smoothly moved. It can be rotated.

Further, in the invention of (3), the displacement sensor is attached to the outer surface of the cylindrical object in the vertical direction by connecting, for example, an extendable attachment fitting or a plurality of continuous fittings to adjust the number of fittings. , And the like, the measurement can be easily performed at an arbitrary position of the cylindrical object.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is a front view of a cylindrical shape measuring apparatus according to a first embodiment of the present invention, FIG. 2 is a view taken along the line AA, and FIG. 3 is a sectional view taken along line BB in FIG.

In these figures, a cylindrical test body 1 as an object to be measured is installed on a test body fixing base 2 via a fixing jig 3, and the test body 1 is loaded with a load jig for various experiments. A load rod 5 of a material testing machine (not shown) is mounted via 4. A bearing fixing disk 6 is installed on the load rod 5 so as to be fixed by a plurality of fixing screws 7 as shown in FIG.

The bearing fixing disc 6 has a structure having a disc portion 6a, a bearing insertion port 6b, and a bearing fixing screw 6c. Bearing The bearing 8 is the bearing insertion port 6 of the bearing fixing disk 6.
The bearing fixing disc 9
Fixed to.

Bearing The rotating disk 10 is provided at the other end of the bearing 8.
Is rotatably attached. Although the outer shape of the rotary disk 10 is rectangular in the first embodiment shown in FIG. 2, it may be circular as in the second embodiment shown in FIG.

A drive motor 11 is attached to the rotary disc 10 as shown in FIG.
As shown in FIG. 1, the metal fitting 12 is attached, and the metal fitting 12 is fixedly mounted by the fixing screw 13. Similarly, as shown in FIG. 1, the angle detector 14 is also attached to the rotating disc 10 by the metal fitting 15. Further, a displacement sensor mounting bracket 16 is attached to the rotating disk 10 by a bracket 17, and the mounting bracket 16
A displacement sensor 21 is attached to the via a plurality of connecting fittings 20.

The length of the connecting fitting 20 is adjustable in the vertical direction of the cylindrical test body 1, and the position of the displacement sensor 21 is moved in the height direction so that the deformation of the cylindrical test body 1 at any position can be measured. Is configured. The adjustment means may be any structure that can withstand vibration, such as an arm that expands and contracts in the vertical direction or a plurality of metal fittings can be connected.

A plurality of protrusions are formed on a predetermined circumference on the upper surface of the test body fixing jig 2 (not shown) so that various test bodies can be replaced at the center of the test body. Is substantially aligned with the center of the load rod, it is possible to simplify the mounting of the test bodies of various shapes.

A rubber pulley 18 is mounted on the drive motor 11 and is pressed against the disk portion 6a of the bearing fixing disk 6. Similarly, the angle detector 14 is also brought into contact with the disc portion 6a of the bearing fixing disc 6 by the rubber pulley 19.

FIG. 4 is a view on arrow AA in FIG.
It is a second embodiment of the present invention. As described above, in the second embodiment, as compared with the first embodiment, the rotating disk is changed from a square of 10 to a circle of 10 ', and other configurations are the same as those of the first embodiment. .

Next, FIG. 5 is an explanatory view of the displacement sensor 21, and a general displacement sensor is a non-contact type sensor, and as shown in the figure, the reference distance between the displacement sensor 21 and the cylindrical test body 1 of the object to be measured ( L) = 0, the distance variation within the measurement range (for example, ± 10 mm) of the displacement sensor 21 is output as a voltage (for example, DC ± 10 V).

FIG. 6 is an explanatory view of the principle of shape measurement. When the drive motor 11 rotates the rotating disk 10, the displacement sensor 21 attached thereto rotates, and the sensor 21 rotates the orbit line 22. Rotate along. Along with the rotation, the displacement sensor 21 shows the measurement data 23 of the shape (concavity and convexity) from the virtual line 24 of the reference distance of the cylindrical test body 1 as the measured object.
Is measured as The rotation angle θ is also measured because the angle detector 14 rotates at the same time.

Next, FIG. 7 is a block diagram of an arithmetic processing unit in the cylindrical shape measuring apparatus according to the first and second embodiments of the present invention. In the figure, the displacement sensor 21 detects the distance from the DUT 1 as an electric signal ν, and this signal is input to a distance converter 31, where the electric signal ν is converted into a physical quantity P. This can be expressed by the following formula.

P = νC + L; where C: sensor coefficient, L: sensor reference distance. The sensor coefficient C is the relationship between the measurement range of the sensor and the output voltage. If the measurement range is ± 10 mm and the output voltage range is ± 10 V, C = 1.
0 (mm) / 10 (V) = 1.

If the sensor reference distance L = 50 mm and the output voltage of the sensor is ν = −1.0 V, then P = −1.0 × 1 + 50 = 49 mm; and the distance between the sensor and the object to be measured is can get.

The radius converter 32 inputs this P, converts it to the radius of the cylindrical body 1 to be measured, and performs the following calculation.

R = RP; where R: radius of the sensor's orbit.

The sensor rotation orbit radius R is set when the present shape measuring apparatus is set, and therefore has a predetermined value. If R = 200 mm, the radius conversion value r is obtained as follows.

That is, r is determined as r = 200 −49 = 151 mm;

Next, the angle detector 14 fixed to the other surface of the rotary disc 10 on which the displacement sensor 21 is mounted detects the amount of rotation of the rotary disc, that is, the amount of rotation of the sensor as the pulse amount n. This pulse amount n has a predetermined relationship with the rotation amount (rotation angle θ). For example, if n = 10 pulses and θ = 1 degree, the reference pulse number is N = 10. Displacement sensor measurement angle θ
Is calculated by the following equation.

Θ = n ÷ N; Here, assuming that the i-th pulse amount is n i = 1300 pulses, the following is obtained.

[0035] That is, θ i = 1300 ÷ 10 = 130 ( degrees); as theta i is obtained.

That is, if the arithmetic processing unit 30 obtains the cylinder radius and the angle in this way and plots them as continuous data on the display 34, they can be displayed as the external shape measurement result of the cylindrical object.

[0037]

As described above in detail, according to the present invention, the load fixing rod for fixing the cylindrical object to be measured is provided with the bearing fixing disc and the rotating plate, and the rotating plate has the angle sensor and the displacement sensor. By installing and and rotating the displacement sensor around the cylindrical object, the detection signal obtained from these sensors is calculated by the arithmetic processing unit to measure the shape of the cylindrical object. Is obtained.

(1) The space around the object to be measured is not narrowed because there is no use of the floor surface part on which the cylindrical test body is installed.

(2) Even when a cylinder to be measured is newly installed or replaced, since the shape measuring device is mounted on the load rod, the rotation axis does not change and the axis of the object to be measured coincides. Since it has good reproducibility, accurate shape measurement is possible.

[Brief description of drawings]

FIG. 1 is a front view of a cylindrical shape measuring apparatus according to a first embodiment of the present invention.

FIG. 2 is a view on arrow AA in FIG.

3 is a sectional view taken along line BB in FIG.

4 is a cylindrical shape measuring device according to a second embodiment of the present invention, and is a view (AA) similar to FIG.

FIG. 5 is an explanatory diagram of a displacement sensor applied to the embodiment of the present invention.

FIG. 6 is an explanatory diagram explaining the principle of cylindrical shape measurement of the present invention.

FIG. 7 is a block diagram of an arithmetic processing unit in the cylindrical shape measuring apparatus according to the first and second embodiments of the present invention.

FIG. 8 is a front view of a conventional cylindrical shape measuring device.

FIG. 9 is a view on arrow CC in FIG.

[Explanation of symbols]

 1 Cylindrical test body 5 Load rod 6 Bearing fixed disc 10 Rotating disc 11 Drive motor 14 Angle detector 18 Rubber pulley 19 Rubber pulley 21 Displacement sensor 30 Calculation processor 31 Distance converter 32 Radius converter 33 Angle converter 34 Display vessel

Claims (3)

[Claims]
1. A cylindrical shape measuring apparatus for measuring the shape of a cross-section outer surface of a cylindrical object, a load rod for fixing the cylindrical object, a bearing fixing disk fixed to an outer peripheral surface of the load rod, and the load rod. A rotating plate installed around the rotating plate, a drive motor installed on the rotating plate and applying a rotational force to the rotating plate around the bearing fixed disk, and an angle detector installed on the rotating plate. A displacement sensor installed on the rotary plate, and an arithmetic processing unit that arithmetically processes the angle and displacement data detected by the angle detector and the displacement sensor to extract the shape measurement result of the outer surface of the cylindrical object. A cylindrical shape measuring device characterized by having.
2. The cylindrical shape measuring device according to claim 1, wherein the rotational force of the drive motor is transmitted by a rubber pulley in contact with the outer peripheral surface of the bearing fixing disk.
3. The cylindrical shape measuring device according to claim 1, wherein the displacement sensor can move its position up and down with respect to the cylindrical object.
JP15451994A 1994-07-06 1994-07-06 Cylindrical shape measuring device Withdrawn JPH0821702A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15451994A JPH0821702A (en) 1994-07-06 1994-07-06 Cylindrical shape measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15451994A JPH0821702A (en) 1994-07-06 1994-07-06 Cylindrical shape measuring device

Publications (1)

Publication Number Publication Date
JPH0821702A true JPH0821702A (en) 1996-01-23

Family

ID=15586034

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15451994A Withdrawn JPH0821702A (en) 1994-07-06 1994-07-06 Cylindrical shape measuring device

Country Status (1)

Country Link
JP (1) JPH0821702A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015506473A (en) * 2011-12-29 2015-03-02 ヴァルレック オイル アンド ガスフランス Device for measuring the internal or external contour of tubular components
RU2637368C1 (en) * 2016-06-17 2017-12-04 федеральное государственное бюджетное образовательное учреждение высшего образования "Национальный исследовательский университет "МЭИ" (ФГБОУ ВО "НИУ "МЭИ") Method for measuring cross-section shape on roundness measurement instruments

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015506473A (en) * 2011-12-29 2015-03-02 ヴァルレック オイル アンド ガスフランス Device for measuring the internal or external contour of tubular components
RU2637368C1 (en) * 2016-06-17 2017-12-04 федеральное государственное бюджетное образовательное учреждение высшего образования "Национальный исследовательский университет "МЭИ" (ФГБОУ ВО "НИУ "МЭИ") Method for measuring cross-section shape on roundness measurement instruments

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A300 Withdrawal of application because of no request for examination

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Effective date: 20011002