TW201821761A - Pipe measuring apparatus and measuring method thereof - Google Patents

Abstract

A pipe measuring apparatus and a measuring method thereof are disclosed for solving the problem suck as lack of measuring apparatus of conventional pipe with inner characteristic portion. The pipe measuring apparatus includes a support frame, a movable seat, a positioning device and a scanning device. The support frame has a fixing portion for fixing a measured pipe. The support frame and the movable seat are arranged along a first direction. The movable seat has a rotating disc. The rotating disc is able to move in the first direction and a second direction. Besides, the rotating disc is able to rotate about a rotation axis parallel to a third direction. The first, second and third directions are perpendicular to one another. The positioning device is able to move in the third direction. A first axis connects two ends of the positioning device. The projection of the first axis on the rotating disc overlaps a radial direction of the rotating disc. The scanning device is coupled with the rotating disc. A second axis connects two ends of the scanning device. The projection of the second axis on the rotating disc overlaps another radial direction of the rotating disc.

Description

   Pipe fitting measuring device and measuring method   

The invention relates to a pipe fitting measuring device and a measuring method thereof, in particular to a pipe fitting measuring device and a measuring method capable of performing characteristic measurement on an inner peripheral wall of a pipe fitting.

Please refer to FIG. 1, which is a conventional pipe fitting 9. The pipe fitting 9 may be a closed pipe body provided with an opening 91 at one end only, or a communicating pipe body provided with an opening 91 at both ends. The inner peripheral wall of the pipe member 9 may be provided with a characteristic portion 92, which may be a groove (such as a ring groove), a flange (such as a ring flange) or other special structures formed on the inner peripheral wall.

In general, when it is necessary to test whether the manufacturing accuracy of the pipe 9 meets the requirements, the appearance of the pipe 9 can be tested by using a measuring device. For example, the Republic of China Patent No. M404369 patent discloses a pipe diameter measuring device , Can measure the diameter of the pipe through its appearance. However, the related measuring device cannot detect whether the characteristic portion 92 inside the pipe 9 conforms to the predetermined specifications.

On the other hand, the existing detection device capable of detecting the inside of the pipe 9 is mainly a contact scanning device. A probe is used to reach the inside of the pipe 9 and abut against its inner peripheral wall to scan the characteristic portion 92 by reciprocating movement. Based on this, it is determined whether the characteristic portion 92 conforms to a predetermined specification. However, if the material of the pipe 9 is relatively fragile, there is a risk of being damaged by the probe. Furthermore, for a small-diameter pipe 9, the probe is easily limited by its size and cannot penetrate into the pipe 9, or cannot move freely inside the pipe 9, resulting in a smaller scope of application of the contact scanning device. In addition, related contact scanning equipment often needs to integrate auxiliary robotic arms and high-resolution probes, which easily results in bulky and expensive system equipment.

In view of this, it is necessary to provide a further improved pipe fitting measuring device and a measuring method to solve the problem that the conventional pipe fitting 9 provided with the characteristic portion 92 lacks a suitable measuring device.

In order to solve the above problem, the present invention provides a pipe fitting measuring device and a measuring method thereof. By setting a movable base, a positioning device and a scanning device, the movable base and the positioning device can be used to position the scanning device so that the scanning device can The inner peripheral wall of the pipe to be measured is measured by projection.

In order to achieve the foregoing object of the invention, the technical means used in the present invention include: A pipe measuring device, comprising: a frame body, the frame body includes a fixing portion for fixing a pipe to be measured; an activity Seat, the frame body and the movable seat are arranged along a first direction, and the movable seat includes a first slide rail, a second slide rail, a rotating disk and a third slide rail, and the second slide rail is movable Ground is coupled to the first slide rail, and the rotary disk is movably coupled to the second slide rail, the first slide rail and the second slide rail are respectively along the first direction and perpendicular to one of the first directions. Extending in the direction, the rotating disk can rotate around a rotating axis, the rotating axis is parallel to a third direction, the third direction is perpendicular to the first direction and the second direction, the rotating disk combined with the third sliding Rail, the third slide rail extends along the third direction; a positioning device, the positioning device is movably coupled to the third slide rail, and a line connecting the two ends of the positioning device is a first axis, the first The projection of the axis on the rotating disc overlaps one of the rotating discs radially And the positioning device has a positioning end; and a scanning device, the scanning device is coupled to the rotating disk, and the line connecting the two ends of the scanning device is a second axis, and the second axis is projected on the rotating disk It overlaps with the other radial direction of the rotating disk, and the scanning device has an image capturing end.

Wherein, the two ends of the positioning device are a coupling end and the positioning end respectively, and the coupling end is directly or indirectly coupled to the third slide rail, and the connection between the coupling end and the positioning end is the first Axis; the two ends of the scanning device are a fixed end and the image capturing end respectively, the fixed end is coupled to the rotating disk, and the line connecting the image capturing end and the fixed end is the second axis. As a result, the projections of the first axis of the positioning device and the second axis of the scanning device on the rotary disk and the two of the rotary disk respectively radially overlap, so if the first axis is in the third direction with the measuring tube, If the central axis overlaps, then the rotary disk is rotated so that the projection of the second axis on the rotary disk is parallel to the first direction, and the second axis will also overlap the central axis of the measuring tube in the third direction. .

Wherein, the positioning device is provided with a protruding post at the positioning end, and the protruding post extends along the third direction. Thereby, the convex column can abut against the inner peripheral wall of the pipe to be measured along the third direction, so the positioning can be achieved by reciprocating the rotary disk and the positioning device in the second direction and the third direction, respectively. The end positions the end edge.

Wherein, the scanning device is provided with a height adjusting portion, which is combined with the fixed end portion of the scanning device, thereby adjusting the scanning device to an appropriate position through the height adjusting portion to avoid the image capturing end portion of the scanning device The distance to the inner peripheral wall of the pipe to be measured is too close or too far, to ensure that the scanning device can perform projection measurement on the inner peripheral wall of the pipe to be measured, or to ensure that the pipe measuring device of the present invention can be applied to different The size of the pipe to be measured.

The rotating disk is provided with a motor, and the motor is a stepping motor. Therefore, when the rotating disk needs to rotate an included angle with the rotating shaft as the axis, the rotating angle of the rotating disk can be controlled by the motor to complete the operation, which has the effect of improving the convenience of using the pipe measuring device.

Wherein, the movable seat is provided with a stopper, and the rotary disk is provided with a first stopper and a second stopper, the rotary disk can be rotated in a first rotation direction, so that the first stopper abuts against the first stopper and the second stopper. A stopper; the rotating disk can rotate in a second rotation direction opposite to the first rotation direction, so that the second stopper abuts the stopper. Therefore, according to this, the rotary disk does not need to be driven by a stepping motor, and can still rotate an angle with the rotary shaft, which has the effect of further reducing the equipment cost of the pipe measuring device.

Wherein, the fixing portion is a bottom plate, the fixing portion is provided with a groove, and the groove extends along the first direction. Thereby, the pipe to be measured can be accommodated in the groove to be supported by the fixing portion, and the surface of the fixing portion facing the groove can effectively fix the pipe to be measured to avoid the production of the pipe to be measured Displacement.

Wherein, the rotating disk is provided with a locking element, which can abut against the second slide rail, so as to fix the rotating disk 2 to the second slide rail to prevent the rotating disk from moving in the second direction. The position of the rotating disk in the second direction is further fixed.

The projection of the first axis and the second axis on the rotating disk has an included angle, and the included angle is 180 °, so that the projection system of the first axis and the second axis on the rotating disk forms a common axis.

A pipe measuring method can be executed by the pipe measuring device as described above. The pipe measuring method includes: fixing a pipe to be measured to a fixing part of the frame body, and making one of the pipes to be measured centered. The axis is parallel to the first direction; turn the rotary disk so that the positioning end of the positioning device faces an opening of the pipe to be measured, and make the projection of the first axis on the rotary disk parallel to the first direction; Moving the rotating disk toward the pipe to be measured along the first direction, so that the positioning end of the positioning device extends into the pipe to be measured through the opening; and the inner peripheral wall of the pipe to be measured is positioned using the positioning end At the edge of the third direction upward, the position of the rotating disk in the second direction is fixed; the rotating disk is moved in the first direction away from the pipe to be measured, so that the positioning end of the positioning device Part of the pipe to be measured; turn the rotary disk so that the image pickup end of the scanning device faces the opening of the pipe to be measured, and make the projection of the second axis on the rotary disk parallel to the first direction; And the rotating disk The first direction of the to-be measured the tube moves the imaging end of the scanning means of extending into the to-be measured the tube through the opening to the scanning means for projection measuring the internal be burette measuring member of the peripheral wall.

Wherein, positioning the end edge of the pipe to be measured by using the positioning end portion includes reciprocatingly moving the rotary disk in the second direction and reciprocating the positioning device in the third direction, so as to use the positioning end portion for positioning. The third peripheral edge of the inner peripheral wall of the pipe to be measured.

Wherein, the projection of the first axis and the second axis on the rotating disk has an included angle, and rotating the rotating disk to make the imaging end of the scanning device toward the opening of the pipe to be measured includes the rotating disk using the The rotation axis rotates the included angle as the axis, so that the projection of the second axis on the rotating disk is parallel to the first direction.

Wherein, a characteristic portion is provided on an inner peripheral wall of the pipe to be measured, and the rotary disk is moved in the first direction toward the pipe to be measured, so that the image pickup end of the scanning device extends into the pipe to be measured through the opening. The method includes controlling the amount of movement of the rotary disk in the first direction, so that the image capturing end portion is located at the feature portion, so that the scanning device can generate an image including the feature portion.

Wherein, using the scanning device to perform projection measurement on the inner peripheral wall of the pipe to be measured includes outputting light rays covering the feature along an axis line that is parallel to the third direction and passes through the pipe to be measured. The central axis, and receives the light reflected from the inner peripheral wall of the pipe to be measured. As a result, the image finally generated by the scanning device may include the characteristic portion, and the image is centered on the third-party end edge of the inner peripheral wall of the pipe to be measured, so whether the characteristic portion can be determined based on the image Conforms to predetermined specifications.

With the above structure, the pipe measuring device and measuring method disclosed in the present invention is that the scanning device can perform projection measurement on the inner peripheral wall of the pipe to be measured along the axis line, and the projection measurement only needs to It can be completed through image capture and analysis, without destroying the pipe to be measured, and has the effect of improving the practicality of pipe measurement. In addition, for a small-diameter pipe to be measured, a scanning device with a small-sized image capturing end can be used to ensure that the measurement is performed smoothly, which has the effect of increasing the applicable range of the pipe-measurement device. In addition, the pipe measuring device is only composed of the frame body, a movable seat capable of linear movement, and the positioning device combined with a scanning device, which effectively reduces the overall structural complexity of the pipe measuring device, and has the effect of reducing the volume of the equipment and the cost of the equipment .

     〔this invention〕     

1‧‧‧frame

11‧‧‧ fixed section

111‧‧‧ groove

112‧‧‧ limit pieces

2‧‧‧ movable seat

21‧‧‧ the first slide

22‧‧‧Second slide

23‧‧‧Rotating disk

231‧‧‧Locking element

232‧‧‧Motor

233‧‧‧First stop

234‧‧‧Second stop

24‧‧‧ Third slide

25‧‧‧stop

3‧‧‧ positioning device

3a‧‧‧Combined ends

3b‧‧‧Combined ends

31‧‧‧ first axis

32‧‧‧ convex post

4‧‧‧ scanning device

4a‧‧‧Fixed end

4b‧‧‧Image taking end

41‧‧‧ second axis

42‧‧‧In and out

43‧‧‧Height adjustment department

X‧‧‧ first direction

Y‧‧‧ second direction

Z‧‧‧ Third direction

θ‧‧‧ angle

S‧‧‧rotation shaft

9‧‧‧ pipe to be measured

91‧‧‧ opening

92‧‧‧Feature Department

93‧‧‧ edge

C‧‧‧center axis

C1‧‧‧ axis line

     [Learning]     

9‧‧‧Pipe Fittings

91‧‧‧ opening

92‧‧‧Feature Department

Figure 1: Partial cross-sectional view of a conventional pipe fitting.

FIG. 2 is a schematic diagram of an appearance of a pipe fitting measuring device according to an embodiment of the present invention.

FIG. 3 is an enlarged view of the appearance of the pipe measuring device according to the embodiment of the present invention.

FIG. 4 is a schematic top view of a pipe fitting measuring device according to an embodiment of the present invention.

FIG. 5 is a schematic partial sectional view of a pipe fitting measuring device according to an embodiment of the present invention.

FIG. 6 is a schematic diagram of the movement of the positioning device of the pipe measuring device according to the embodiment of the present invention when the positioning device extends into the pipe to be measured.

FIG. 7 is a schematic view of the positioning end of the positioning device of the pipe fitting measuring device according to the embodiment of the present invention receiving the measuring pipe fitting.

FIG. 8 is a schematic diagram of a state where a positioning end of a positioning device of a pipe fitting measuring device according to an embodiment of the present invention is far from an end edge of a pipe fitting to be measured.

FIG. 9 is a schematic diagram showing a state where a positioning end of a positioning device of a pipe fitting measuring device according to an embodiment of the present invention is positioned at an end edge of a pipe fitting to be measured.

FIG. 10 is a schematic view of the rotating disk of the pipe measuring device of the embodiment of the present invention being rotated by an included angle.

FIG. 11 is a schematic partial cross-sectional view of the rotating plate of the pipe measuring device according to the embodiment of the present invention after being rotated by an included angle.

FIG. 12 is a schematic diagram of the action of the scanning device of the pipe measuring device according to the embodiment of the present invention when the scanning device extends into the pipe to be measured.

FIG. 13 is a schematic diagram of an operation of measuring the inner peripheral wall of the pipe to be measured by the pipe measuring device according to the embodiment of the present invention.

FIG. 14 is an enlarged schematic view of the appearance of a stopper provided on a movable seat of the pipe fitting measuring device according to the embodiment of the present invention.

In order to make the above and other objects, features, and advantages of the present invention more comprehensible, the following describes the preferred embodiments of the present invention in detail with the accompanying drawings, as follows: Please refer to FIGS. 2 and 3 Is a pipe measuring device according to an embodiment of the present invention, which includes a frame 1, a movable base 2, a positioning device 3, and a scanning device 4, the frame 1 and the movable base 2 are along a first direction X Arranged, the positioning device 3 and the scanning device 4 are respectively coupled to the movable base 2.

The frame body 1 includes a fixing portion 11. The fixing portion 11 can be used for fixing a pipe part 9 to be measured. For example, in this embodiment, the fixing portion 11 is a bottom plate. The fixing portion 11 is provided with a groove 111 extending along the first direction X, and the groove 111 may form a wedge-shaped groove. . Thereby, the pipe member 9 to be measured can be received in the groove 111 to be supported by the fixing portion 11. In addition, the fixing portion 11 can also be combined with a stopper 112, which is abutted against the pipe member 9 to be measured, so that the pipe member 9 to be measured is surely clamped and fixed in the groove 111 to avoid The tube 9 to be measured is displaced. However, in some embodiments of the present invention, the fixing portion 11 may also be other forms of fixing structures such as a bracket, a clamp, or a suspension device, and the present invention is not limited thereto.

The movable seat 2 includes a first slide rail 21, a second slide rail 22, a rotating disk 23, and a third slide rail 24. The second slide rail 22 is movably coupled to the first slide rail 21. The rotating disk 23 is movably coupled to the second slide rail 22. The first slide rail 21 and the second slide rail 22 extend along the first direction X and a second direction Y perpendicular to the first direction X, respectively. For example, in this embodiment, the first slide rail 21 extends along the first direction X, and the second slide rail 22 extends along the second direction Y. Thereby, the second slide rail 22 can move relative to the first slide rail 21 in the first direction X, and the rotating disk 23 can move relative to the second slide rail 22 in the second direction Y, so that the rotating disk 23 Substantially movable in the first direction X and the second direction Y, respectively. However, in some embodiments of the present invention, the first slide rail 21 may extend along the second direction Y, and the second slide rail 22 may extend along the first direction X. Similarly, the rotating disk 23 may be respectively The first direction X and the second direction Y move, so the present invention is not limited thereto.

The rotating disk 23 is located on a plane formed by the first direction X and the second direction Y. The rotating disk 23 is rotatable around a rotation axis S. The rotation axis S is parallel to a third direction Z. The third direction Z is perpendicular to the first direction X and the second direction Y, respectively. The rotating disk 23 is combined with the third slide rail 24, and the third slide rail 24 extends along the third direction Z.

The positioning device 3 is movably coupled to the third slide rail 24. Thereby, the positioning device 3 can move relative to the third slide rail 24 along the third direction Z. The two ends of the positioning device 3 are a coupling end 3a and a positioning end 3b. The coupling end 3a is directly or indirectly coupled to the third slide rail 24. The coupling end 3a is connected to the positioning end 3b. The line is a first axis 31, and the projection of the first axis 31 on the rotating disk 23 and one of the rotating disks 23 radially overlap; in other words, the projection of the first axis 31 on the rotating disk 23 can extend through the rotation Axis S.

The scanning device 4 is coupled to the rotating disk 3. The two ends of the scanning device 4 are a fixed end portion 4a and an image capturing end portion 4b. The fixed end portion 4a is coupled to the rotating disk 3. The connection between the image capturing end portion 4b and the fixed end portion 4a is one. The second axis 41, the projection of the second axis 41 on the rotating disk 23 and the other radial overlap of the rotating disk 23; in other words, the projection of the second axis 41 on the rotating disk 23 can also extend through the rotating axis S. The scanning device 4 can export the light generated by a light source (for example, a laser light source) from the image capturing end portion 4b to illuminate an object to be measured (such as the aforementioned measuring tube 9), and then the image capturing end The part 4b receives the light reflected by the object to be measured by projecting the object. An embodiment similar to the scanning device 4 has been disclosed in the Republic of China Patent Publication No. 201544067.

Please refer to FIG. 4 together, the projection of the first axis 31 and the second axis 41 on the rotating disk 23 has an included angle θ. In this embodiment, the included angle θ may be 180 °. Therefore, the projection system of the first axis 31 and the second axis 41 on the rotating disk 23 forms a common axis. However, the present invention is not limited to this. The included angle θ only needs to be larger than a predetermined angle so that the positioning device 3 and the scanning device 4 do not interfere with each other, that is, the operation of the pipe measuring device of the embodiment of the present invention is not affected.

The method for measuring a pipe fitting according to an embodiment of the present invention can be performed by the pipe measuring apparatus of the above embodiment. Please refer to FIG. 2 and FIG. 5. First, a pipe fitting 9 to be measured is fixed to the fixing part of the frame 1. 11. Make one central axis C of the pipe member 9 to be measured parallel to the first direction X. Wherein, the pipe member 9 to be measured may be a closed pipe body provided with an opening only at one end, or a communicating pipe body provided with an opening at both ends. The rack body 1 and the first slide rails 21 of the movable base 2 are arranged along the first direction X. Therefore, an opening 91 of the pipe member 9 to be measured can extend toward the movable base 2 along the first direction X. The rotating disk 23 can be rotated about the rotating shaft S as the axis, and the projection of the first axis 31 of the positioning device 3 on the rotating disk 23 overlaps with one of the rotating disk 23 radially. Therefore, the rotating disk 23 is rotated by rotating the rotating disk 23. The positioning end 3b of the positioning device 3 can be directed toward the opening 91 of the pipe member 9 to be measured, and the projection of the first axis 31 on the rotating disk 23 is parallel to the first direction X.

Referring to FIG. 6, the rotary disk 23 is moved toward the pipe to be measured 9 along the first direction X, so that the positioning end 3 b of the positioning device 3 extends into the pipe to be measured 9 through the opening 91. . Please refer to FIGS. 7, 8 and 9. By reciprocating the positioning device 3 in the second direction Y and reciprocating in the third direction Z by the rotary disk 23, the positioning end portion 3 b can be used for positioning. An end edge 93 of the inner peripheral wall of the pipe member 9 to be measured in the third direction Z. In detail, for convenience of explanation, the third direction Z may be a plumb direction, so the end edge 93 may be a bottom edge of the inner peripheral wall of the pipe member 9 to be measured, but the present invention is not limited thereto. In this embodiment, the positioning device 3 may be provided with a protruding post 32 at the positioning end 3b, and the protruding post 32 may extend downward in the third direction Z. As shown in FIG. 8, the positioning device 3 can be moved downward in the third direction Z, so that the protruding post 32 abuts the inner peripheral wall of the pipe member 9 to be measured, and then the rotating disk 23 is moved along the first Reciprocating in two directions Y, if the positioning device 3 is forced to move upward, it means that the positioning end 3b is moving away from the end edge 93 of the pipe 9 to be measured when moving in that direction; otherwise, if the positioning device 3 requires The downward movement can make the convex post 32 abut against the inner peripheral wall of the pipe member 9 to be measured, which means that the positioning end portion 3b is approaching the end edge 93 when moving in the direction. Accordingly, as shown in FIG. 9, by positioning the rotary disk 23 and the positioning device 3 to reciprocate in the second direction Y and the third direction Z, respectively, the positioning edge 3 b can position the end edge 93.

After positioning the end edge 93 of the pipe member 9 to be measured in the third direction Z with the positioning end portion 3b, the position of the rotating disk 23 in the second direction Y is fixed. For example, please refer to FIG. 2. In this embodiment, the rotating disk 23 may be provided with a locking element 231. The locking element 231 can abut the second slide rail 22. The fixing element 231 can fix the rotating disk 23 to the second slide rail 22 to prevent the rotating disk 23 from moving in the second direction Y, and then fix the position of the rotating disk 23 in the second direction Y. The rotating disk 23 is moved in the first direction X in a direction away from the pipe member 9 to be measured, so that the positioning end 3 b of the positioning device 3 is separated from the pipe member 9 to be measured. Next, referring to FIG. 10 and FIG. 11, it is known that the projections of the first axis 31 of the positioning device 3 and the second axis 41 of the scanning device 4 on the rotary disk 23 and the radial direction of the rotary disk 23 are respectively Overlap, and the projection of the first axis 31 and the second axis 41 on the rotating disk 23 has the included angle θ, so the rotating disk 23 rotates the included angle θ with the rotation axis S as the axis, so that the scanning The image capturing end portion 4b of the device 4 faces the opening 91 of the pipe member 9 to be measured, and the projection of the second axis 41 on the rotating disk 23 is parallel to the first direction X.

Referring to FIG. 12, the rotary disk 23 is moved in the first direction X toward the tube to be measured 9, so that the image capturing end portion 4 b of the scanning device 4 extends into the tube to be measured through the opening 91. 9. Wherein, by controlling the amount of movement of the rotary disk 23 in the first direction X, the depth at which the image capturing end portion 4b projects into the tube 9 to be measured can be adjusted, so that the image capturing end portion 4b can be positioned at the quantity to be measured. Feature 92 on the inner peripheral wall of the tube member 9. In this embodiment, the scanning device 4 may be provided with a light entrance / exit port 42 at the image capturing end portion 4b. The light exit / entry port 42 may be used to guide light to illuminate the inner peripheral wall of the tube 9 to be measured, and receive the Measure the light reflected from the inner peripheral wall of the tube 9.

It is worth noting that in the aforementioned step of positioning the end edge 93 of the pipe 9 to be measured in the third direction Z using the positioning end portion 3b of the positioning device 3, the positioning end portion 3b is positioned at the end edge 93 And the projection of the first axis 31 on the rotating disk 23 is parallel to the first direction X; in other words, the first axis 31 of the positioning device 3 will be in the third direction X with the central axis of the measuring tube 9 C overlaps. Since the position of the rotating disk 23 in the second direction Y is fixed, the rotating disk 23 is rotated by the rotation axis S as the axis center by the included angle θ, so that the second axis 41 of the scanning device 4 is on the rotating disk 23 After the projection is parallel to the first direction X, the second axis 41 will also overlap the central axis C of the measuring tube 9 in the third direction X. Accordingly, referring to FIG. 13, the scanning device can perform projection measurement on the inner peripheral wall of the pipe member 9 to be measured along an axis line C1, and the axis line C1 is parallel to the third direction Z and passes through the The central axis C of the pipe 9 to be measured. In detail, the scanning device 4 outputs light from the light entrance / exit port 42 of the image capturing end portion 4b. The light covers the feature portion 92 on the inner peripheral wall of the tube 9 to be measured, and receives the tube to be measured. The light reflected by the inner wall of 9

More specifically, the scanning device 4 can output a linear laser light through the light entrance and exit port 42 of the image capturing end portion 4b. The linear laser light can be scanned to cover the features on the inner peripheral wall of the pipe 9 to be measured. The portion 92, the linear laser light may be symmetrical with respect to the axis line C1. Wherein, after the scanning device 4 receives the light reflected from the inner peripheral wall of the pipe member 9 to be measured by the light entrance / exit port 42, it can sense the intensity of the reflected light through a photosensitive element (not shown), and perform a calculation A unit (not shown) captures a depth information image or a distance image of the inner peripheral wall of the pipe 9 to be measured. According to this, the scanning device 4 can perform projection measurement on the inner peripheral wall of the pipe member 9 to be measured along the axis line C1. The photosensitive element may be a Charge Coupled Device (CCD) camera or a Complementary Metal-Oxide Semiconductor (CMOS) camera. The computing unit can analyze the light intensity feature points in the picture taken by the photosensitive element (that is, the position where the light is the brightest, which is usually the position of the brightest pixel in each row or column, and can be interpolated to the secondary pixels ), After the light intensity feature point is subjected to a triangular geometric operation (or a pre-corrected mapping data), the positional relationship between a ray in space and the scanning device 4 can be calculated. In addition, in this embodiment, the light passing through the light entrance 42 may be laser light. At the characteristic point of the laser light intensity, the Remez FIR filter finite impulse response filtering method and the zero-crossing point method proposed by Forest are used. The laser light intensity feature point value extraction and filtering internal difference compensation calculation can effectively improve the resolution of the projection measurement.

The image finally generated by the scanning device 4 includes the characteristic portion 92, so it can be determined whether the characteristic portion 92 conforms to a predetermined specification based on the image. For example, in this embodiment, the feature portion 92 may be a ring groove. Therefore, the image generated by the scanning device 4 can analyze whether the parameters such as the width, depth, and edge evenness of the ring groove meet predetermined requirements. Specifications to test whether the manufacturing accuracy of the pipe 9 meets the requirements, or to determine whether the pipe 9 to be measured is a good product.

It can be known that compared with the contact probes used in the existing contact scanning equipment inside the pipe 9 for detecting the risk of damaging the pipe 9, the pipe measuring device and the scanning device 4 of the measuring method of the embodiment of the present invention do not need to contact For a pipe 9 to be measured, only the image capturing and analysis can be used to perform a projection measurement on the characteristic portion 92 on the inner peripheral wall of the pipe 9 to be measured, so that the pipe 9 to be measured will not be damaged, and it has an improvement. The fitting 9 measures the effectiveness of practicality.

Furthermore, the tube measuring device and measuring method of the embodiment of the present invention only need to extend the image capturing end 4b of a scanning device 4 into the tube 9 to be measured to perform projection measurement. The portion 4b only needs to be provided with the simple structure such as the light entrance and exit 42 and a mirror for changing the light path, so that for a small-diameter tube 9 to be measured, a scanning device with a small-sized image capturing end portion 4b can be used 4 Make sure the measurement goes smoothly. Compared with the probes of the existing contact scanning equipment, the probes are easily limited in size and cannot protrude into the inside of the pipe 9. The present invention has the effect of improving the applicable range of the pipe measuring device.

In addition, compared with the existing contact scanning equipment that requires the integration of an auxiliary robotic arm and a high-resolution probe, the pipe measuring device of the embodiment of the present invention is only composed of a movable seat 2 and a scanning device 4, which can effectively reduce the whole pipe measuring device. Its structural complexity has the effect of reducing equipment volume and reducing equipment cost.

Based on the above technical concept, the features of the pipe fitting measuring device and measuring method according to the embodiments of the present invention are listed below and described in detail: please refer to FIGS. 2 and 3, in this embodiment, the first of the movable seat 2 The slide rail 21, the second slide rail 22, and the third slide rail 24 may have a rail structure, so that the second slide rail 22 can linearly move relative to the first slide rail 21 in the first direction X, so that the rotating disk 23 can A linear movement relative to the second slide rail 22 along the second direction Y and a linear movement of the positioning device 3 relative to the third slide rail 24 along the third direction Z.

The present invention does not impose restrictions on driving the second slide rail 22 relative to the first slide rail 21, driving the rotary disk 23 relative to the second slide rail 22, or driving the positioning device 3 relative to the third slide rail 24. mechanism. However, for the tube 9 to be measured of the same type, the depth at which the image pickup end portion 4b needs to penetrate into the tube 9 to be measured is usually a certain value; in other words, the rotary disk 23 detects each tube 9 to be measured The amount of movement along the first direction X can be fixed. Therefore, in some embodiments of the present invention, the second slide rail 22 can be moved relative to the first slide rail 21 by an aerostatic transmission mechanism. The pressure transmission mechanism has the characteristics of high repeatability and rapid positioning, and can improve the detection efficiency of the pipe fitting measuring device and the measuring method of the embodiment of the present invention.

Please refer to FIGS. 7, 8 and 9. As mentioned before, in this embodiment, the positioning device 3 may be provided with a protruding post 32 provided at the positioning end 3 b and extending downward in the third direction Z. Therefore, by moving the positioning device 3 downward in the third direction Z, the convex column 32 can be abutted against the inner peripheral wall of the pipe member 9 to be measured; however, the convex column 32 can also be designed to move along the third The direction Z extends upward. Therefore, by moving the positioning device 3 upward in the third direction Z, the convex post 32 can also abut against the inner peripheral wall of the pipe member 9 to be measured. Alternatively, in some embodiments of the present invention, the positioning end portion 3b may not need to be provided with the protrusion 32. In contrast, the positioning device 3 may be inclined downward or upward by the combining end portion 3a toward the positioning end portion 3b. Therefore, by positioning the positioning device 3 downward or upward in the third direction Z, the positioning end portion 3b can still be brought into contact with the inner peripheral wall of the pipe member 9 to be measured.

Please refer to FIG. 11. In this embodiment, the scanning device 4 may further be provided with a height adjusting portion 43, and the height adjusting portion 43 may be combined with the fixed end portion 4 a of the scanning device 4. Thereby, the height adjustment portion 43 can adjust the distance between the fixed end portion 4 a and the rotating disk 23 in the third direction Z. Therefore, please refer to FIG. 12, if the distance between the image capturing end portion 4 b of the scanning device 4 and the inner peripheral wall of the tube member 9 to be measured is too close or too far, the height adjusting portion 43 can The scanning device 4 is adjusted to an appropriate position to ensure that the scanning device 4 can perform projection measurement on the inner peripheral wall of the pipe member 9 to be measured. In addition, the height adjusting part 43 can also be used by a user to adjust the position of the scanning device 4 corresponding to different sizes of the tube to be measured 9 to ensure that the tube measurement device of the embodiment of the present invention can be applied to different sizes of the tube to be measured.管 件 9。 Pipe fittings 9.

In this embodiment, the rotating disk 23 may be provided with a motor 232 to be driven by the motor 232 to rotate around the rotating shaft S as an axis. The motor 232 may be a rotation driving structure with a controllable rotation angle such as a step motor. Therefore, when the rotating disk 23 needs to rotate the included angle θ with the rotation axis S as an axis, the motor 232 can be driven by the motor. 232 controls the rotation angle of the rotating disk 23 to complete the action, and has the effect of improving the convenience of use of the pipe measuring device of the embodiment of the present invention.

Alternatively, please refer to FIG. 14. In some embodiments of the present invention, the rotary disk 23 is not provided with a rotary driving structure, or the provided rotary driving structure cannot accurately control the rotation angle. Accordingly, the movable seat 2 can A stopper 25 is provided, and the rotating disk 23 can also be provided with a first stopper 233 and a second stopper 233. The rotary disk 23 can be rotated in a first rotation direction (for example, clockwise), so that the first stopper 233 abuts the stopper 25. At this time, the first axis 31 of the positioning device 3 is at The projection of the rotating disk 23 will be parallel to the first direction X. In contrast, the rotating disk 23 can be rotated in a second rotation direction (eg, counterclockwise) opposite to the first rotation direction, so that the second The stopper 234 abuts the stopper 25. At this time, the projection of the second axis 41 of the scanning device 4 on the rotating disk 23 will be parallel to the first direction X. According to this, the rotating disk 23 does not need to be driven by a stepping motor, and can still rotate the included angle θ with respect to the rotating shaft S, which has the effect of further reducing the equipment cost of the pipe measuring device of the embodiment of the present invention.

In summary, the pipe measuring device and measuring method of the embodiments of the present invention can be positioned using the movable base 2 and the positioning device 3 by setting the movable base 2, the positioning device 3, and the scanning device 4. The scanning device 4 enables the scanning device 4 to perform a projection measurement on the inner peripheral wall of the pipe member 9 to be measured along the axis line C1. The projection measurement can be completed only through image acquisition and analysis. Will destroy the pipe 9 to be measured, and indeed has the effect of improving the practicality of the pipe 9 measurement.

Furthermore, the pipe measuring device and measuring method of the embodiment of the present invention only need to extend the image pickup end portion 4b of a scanning device 4 into the pipe 9 to be measured to perform projection measurement, so the caliber is relatively small. The to-be-measured pipe fitting 9 can use the scanning device 4 with a small-sized image capturing end portion 4b to ensure that the measurement is performed smoothly, and indeed has the effect of improving the applicable range of the pipe fitting measuring device. In addition, the pipe measuring device according to the embodiment of the present invention is only composed of the frame body 1, a movable seat 2 capable of linear movement, and the positioning device 3 in cooperation with the scanning device 4, which can effectively reduce the complexity of the overall structure of the pipe measuring device. It really has the effect of reducing equipment volume and reducing equipment cost.

Although the present invention has been disclosed using the above-mentioned preferred embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make various changes and modifications to the above embodiments without departing from the spirit and scope of the present invention. The technical scope protected by the invention, so the scope of protection of the present invention shall be determined by the scope of the appended patent application.

Claims (14)

    A pipe fitting measuring device includes: a frame body including a fixing portion for fixing a pipe piece to be measured; a movable seat, the frame body and the movable seat being arranged along a first direction; The movable seat includes a first slide rail, a second slide rail, a rotating disk, and a third slide rail. The second slide rail is movably coupled to the first slide rail, and the rotating disc is movably combined. On the second slide rail, the first slide rail and the second slide rail respectively extend in the first direction and a second direction perpendicular to the first direction, and the rotating disk can rotate around a rotation axis as an axis. The rotation axis is parallel to a third direction, the third direction is perpendicular to the first direction and the second direction, respectively, the rotating disk is combined with the third slide rail, and the third slide rail extends along the third direction; a positioning Device, the positioning device can be movably coupled to the third slide rail, and the line connecting the two ends of the positioning device is a first axis, and the projection of the first axis on the rotating disk overlaps one of the rotating disk radially And the positioning device has a positioning end; and a scanning device for scanning The scanning device is coupled to the rotating disk, and the line connecting the two ends of the scanning device is a second axis, and the projection of the second axis on the rotating disk overlaps with another radial direction of the rotating disk, and the scanning device has a Like the end.         The pipe fitting measuring device according to item 1 of the patent application scope, wherein the two ends of the positioning device are a joint end and the positioning end respectively, and the joint end is directly or indirectly coupled to the third slide rail, the The connecting line between the combining end portion and the positioning end portion is the first axis; the two ends of the scanning device are a fixed end portion and the image capturing end portion, and the fixed end portion is coupled to the rotating disk and the image capturing end portion. The connection with the fixed end is the second axis.         The pipe fitting measuring device according to item 2 of the scope of patent application, wherein the positioning device is provided with a convex post at the positioning end, and the convex post extends along the third direction.         The pipe fitting measuring device according to item 1 of the scope of patent application, wherein the scanning device is provided with a height adjusting portion, and the height adjusting portion is combined with the fixed end portion of the scanning device.         The pipe fitting measuring device according to item 1 of the patent application scope, wherein the rotary disc is provided with a motor, and the motor is a stepping motor.         The tube measuring device according to item 1 of the scope of patent application, wherein the movable seat is provided with a stopper, and the rotary disk is provided with a first stopper and a second stopper, and the rotary disk can be moved along a first stopper. A rotation direction makes the first stopper abut against the stopper; the rotary disk can rotate in a second rotation direction opposite to the first rotation direction, so that the second stopper abuts on the stopper Block.         According to the pipe fitting measuring device according to item 1 of the scope of patent application, wherein the fixing portion is a bottom plate, the fixing portion is provided with a groove, and the groove extends along the first direction.         According to the pipe fitting measuring device according to item 1 of the scope of patent application, wherein the rotating disk is provided with a locking element, the locking element can abut against the second slide rail.         The pipe fitting measuring device according to item 1 of the scope of patent application, wherein the projection of the first axis and the second axis on the rotating disk has an included angle, and the included angle is 180 °.         A pipe fitting measurement method can be performed by a pipe fitting measurement device as described in item 1, 2, 3, 4, 5, 6, 7, or 8 of the scope of patent application. The pipe fitting measurement method includes: The measuring tube is fixed to the fixing part of the frame body, so that a central axis of the tube to be measured is parallel to the first direction; the rotating disk is rotated so that the positioning end of the positioning device faces an opening of the tube to be measured And make the projection of the first axis on the rotating disk parallel to the first direction; move the rotating disk along the first direction toward the pipe to be measured, so that the positioning end of the positioning device projects through the opening The pipe to be measured; using the positioning end to locate an end edge of the inner peripheral wall of the pipe to be measured in the third direction, and fixing the position of the rotating disk in the second direction; Move in a direction away from the pipe to be measured, so that the positioning end of the positioning device is detached from the pipe to be measured; turn the rotary disk, so that the imaging end of the scanning device faces the opening of the pipe to be measured , And the second axis is positioned between the rotating disk The shadow is parallel to the first direction; and the rotary disk is moved in the first direction toward the tube to be measured, so that the image pickup end of the scanning device extends into the tube to be measured through the opening, and the scanning device Projection measurement is performed on the inner peripheral wall of the pipe to be measured.         The method for measuring a pipe fitting according to item 10 of the scope of the patent application, wherein using the positioning end to locate the end edge of the pipe to be measured includes reciprocating the rotary disk in the second direction, and the positioning device Reciprocating in this third direction.         The method for measuring pipe fittings according to item 10 of the scope of patent application, wherein the projection of the first axis and the second axis on the rotating disk has an included angle, and the rotating disk is rotated so that the imaging end of the scanning device faces The opening of the pipe to be measured includes rotating the rotating disk around the rotation axis by the included angle.         The method for measuring pipe fittings according to item 10 of the scope of patent application, wherein the inner peripheral wall of the pipe to be measured is provided with a feature, and the rotating disk is moved in the first direction toward the pipe to be measured to enable the scanning device. The projecting end portion protrudes into the pipe to be measured through the opening includes controlling the amount of movement of the rotary disk in the first direction, so that the imaging end portion is located at the feature portion.         The method for measuring pipe fittings according to item 13 of the scope of patent application, wherein using the scanning device to perform projection measurement on the inner peripheral wall of the pipe to be measured includes outputting light rays covering the feature along an axis center line, the The axis line is parallel to the third direction and passes through the central axis of the pipe to be measured, and receives light reflected from the inner peripheral wall of the pipe to be measured.