CN211652596U - Cylinder inner wall check out test set - Google Patents

Abstract

The application relates to a cylinder inner wall check out test set, including endoscope subassembly and clamping subassembly, the endoscope subassembly includes: the device comprises a device body, a light source and a control unit, wherein the device body is internally provided with a channel through which light can pass; an illumination device connected to one side of the device body and capable of irradiating the inside of the passage; the lighting tube is provided with a light inlet at one side; and a camera assembly connected to one end of the apparatus body. Light outside the lighting tube can enter the lighting tube from the light inlet, passes through the light deflection assembly and then is transmitted along the axis direction of the channel to be received by the camera assembly; the light emitted by the lighting device can pass through the light deflection assembly and then be transmitted along the channel and finally transmitted out from the light inlet to illuminate the inner wall of the workpiece to be measured. The camera and the lighting assembly of the utility model can detect only by extending the lighting tube at one end into the cylinder, and the diameter of the lighting tube is small, so that the cylinder with a small inner diameter can be measured; the illuminating tube can be used for guiding illuminating light and receiving reflected light, and the overall volume occupation of the equipment is reduced.

Description

Cylinder inner wall check out test set

Technical Field

The application belongs to the technical field of workpiece surface detection, and particularly relates to a cylindrical surface inner wall detection device.

Background

At present, many manufacturers adopt a manual detection method when detecting the defects of the inner wall of the small-size cylinder, namely, dozens of times of large lenses are used for observing the inner wall by people, so that the method not only consumes a large amount of manpower, but also has low efficiency. As one of machine vision inspection, surface defect inspection techniques have been applied to various industries. Compared with naked eyes, the surface quality detection has the characteristics of higher precision, higher speed and capability of operating in a narrow space, saves cost, simultaneously enables safety and high efficiency to coexist, and has wide application prospect. The surface quality detection is based on a machine vision detection technology, and can detect appearance defects such as spots, dents, microcracks and the like on the surface of a workpiece.

The chinese utility model of publication No. CN208012553U discloses a cylinder inner wall detection system, which comprises a computer, a CCD camera, a structured light controller, a reflector and an installation sleeve; the device is characterized in that the structural light controller, the center of the reflector and the CCD camera are all positioned on the central axis of the mounting sleeve; the structured light irradiates the surface of the inner wall of the cylinder and generates diffuse reflection, the reflected light spots and objects in the current field angle are imaged on the CCD camera together, wherein the light spots are imaged into a section of high-brightness line segment, other background images are data with lower brightness, the light signals are converted into electric signals, the high-brightness line segment formed by light spot mapping is collected by a computer, the mass center of the high-brightness line segment is calculated, and the distance to be measured is calculated. The CCD camera, the structural light controller and the reflector of the device are all fixedly installed inside the installation sleeve, so that the detection object of the device has requirements on size, and cannot detect a cylinder with the inner diameter smaller than the diameter of the camera.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to solve the defects of the detection of the inner wall of the cylinder in the prior art, the cylindrical inner wall detection equipment is provided.

The utility model provides a technical scheme that its technical problem adopted is: a cylindrical interior wall inspection device comprising an endoscope assembly and a clamping assembly, the endoscope assembly comprising:

the device comprises a device body, a light source and a control unit, wherein the device body is internally provided with a channel through which light can pass;

an illumination device connected to one side of the device body and capable of irradiating into the passage;

one end of the illuminating tube is coaxially connected to one end of the equipment main body, a first light deflection assembly is arranged inside the other end of the illuminating tube, and a light inlet is formed in the position, aligned with the first light deflection assembly, of one side of the illuminating tube; light outside the lighting tube can enter the lighting tube from the light inlet and is transmitted along the axis direction of the channel after passing through the first light deflection assembly;

the light conduction assembly is used for conducting light emitted by the lighting device to the light inlet and irradiating the light to the outside of the lighting tube;

and the camera assembly is connected to one end of the equipment main body and is positioned on the opposite side of the illumination tube, and a lens of the camera assembly is aligned to the axis direction of the channel.

Preferably, the utility model discloses a cylinder inner wall check out test set, the clamping subassembly includes:

a base;

the rotating device is arranged on the base;

the rotating disc is coaxially arranged on the rotating device;

the chuck is coaxially connected to the turntable and used for clamping the cylinder to be monitored; the center of the chuck is hollow;

the heightening sleeve is arranged in the center hollow part of the chuck, and one end of the heightening sleeve is provided with an opening.

Preferably, the utility model discloses a cylinder inner wall check out test set, light conduction subassembly is a set of prism, installs in the passageway, with lighting apparatus's one end aligns, be used for with light reflection or refraction that lighting apparatus sent and follow passageway axis direction transmission, or will follow the light of passageway axis direction transmission by the one end of passageway is transmitted to the other end.

Preferably, the utility model discloses a cylinder inner wall check out test set, the light conduction subassembly includes: first right-angle triple prism and second right-angle triple prism, the mutual amalgamation in inclined plane of first right-angle triple prism and second right-angle triple prism forms the cuboid, first right-angle triple prism and second right-angle triple prism respectively have a right angle limit place the face with the passageway axis is perpendicular, first right-angle triple prism and second right-angle triple prism respectively have the face at a right angle limit place perpendicular with the light that lighting apparatus shines out.

Preferably, the utility model discloses a cylinder inner wall check out test set, light conduction subassembly is connected for one end lighting apparatus, the other end is connected the optic fibre at light inlet edge.

Preferably, the utility model discloses a cylinder inner wall check out test set, the one end of equipment main part has and is used for the clamping portion of illumination pipe, the lateral wall mark of illumination pipe has the scale of length, clamping portion terminal surface can with the scale aligns.

Preferably, the utility model discloses a cylinder inner wall check out test set, the base has base main part and adjusts the seat, it can the activity and can fix through the mounting to adjust the seat in the base main part, rotary device installs adjust on the seat.

Preferably, the utility model discloses a cylinder inner wall check out test set, the both sides of base main part are equipped with the track, it is spacing in both sides to adjust the both sides of seat between the track, it can follow to adjust the seat the track slides.

Preferably, the utility model discloses a cylinder inner wall check out test set, be equipped with the scale on the track, the both sides of adjusting the seat are equipped with and are used for lining up the mark of the scale of scale.

Preferably, the cylindrical inner wall monitoring device of the present invention further comprises an adjusting mechanism for adjusting the position of the adjusting seat on the base main body;

the adjustment mechanism includes:

the fixed block is fixed on the base main body;

one end of the rotating rod is rotatably arranged on the fixed block and limits axial movement through the limiting block, and the other end of the rotating rod is provided with threads;

the pushing block is fixed on the adjusting seat and provided with a threaded hole corresponding to the thread on the rotating rod.

The utility model has the advantages that: the camera and the lighting assembly do not need to enter the cylinder, the detection can be carried out only by extending the lighting tube at one end into the cylinder, and the diameter of the lighting tube is small, so that the cylinder with a small inner diameter can be measured; the illuminating tube can be used for guiding illuminating light and receiving reflected light, so that the overall volume occupation of the equipment is reduced;

the detection of waiting to detect the drum and rotate can be driven, makes things convenient for the inner wall, has the bed hedgehopping cover in the chuck, can increase the space of waiting to detect the drum bottom, makes the light inlet can gather the image of waiting to detect the drum bottom.

Drawings

The technical solution of the present application is further explained below with reference to the drawings and the embodiments.

FIG. 1 is a schematic diagram of an overall structure of a cylindrical inner wall detection device according to an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of an endoscope assembly according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a light guide assembly according to an embodiment of the present disclosure;

FIG. 4 is a schematic side wall structure of an illumination tube according to an embodiment of the present application;

FIG. 5 is a perspective view of the external structure of the clamping assembly of the embodiment of the application;

FIG. 6 is a schematic cross-sectional view of a structure of a clamping assembly according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of an adjusting seat according to an embodiment of the present application.

The reference numbers in the figures are:

10 endoscope assembly

20 clamping assembly

100 device body

101 channel

102 clamping part

110 lighting device

120 lighting tube

121 first light deflection component

122 light inlet

130 light conducting component

140 camera assembly

200 base

201 base body

202 regulating seat

203 regulating mechanism

204 track

210 rotating device

220 rotating disc

230 chuck

240 heightening sleeve

300 straight line module

1301 first right-angle triple prism

1302 a second right triangular prism

2021 marking

2031 fixed block

2032 rotating rod

2033 push block

2041 staff gauge

A measured cylinder.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, unless otherwise specified, "a plurality" means two or more.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.

The technical solutions of the present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example 1

The present embodiment provides a cylindrical surface inner wall detection device, as shown in fig. 1-2, including an endoscope assembly 10 and a clamping assembly 20, where the endoscope assembly 10 includes:

a device body 100 having a passage 101 through which light can pass;

an illumination device 110 connected to one side of the device body 100 and capable of irradiating the inside of the passage 101;

an illumination tube 120, one end of which is coaxially connected to one end of the apparatus main body 100, a first light deflection component 121 is arranged inside the other end of which, and a light inlet 122 is arranged at a position of one side of the illumination tube 120 aligned with the first light deflection component 121; light outside the lighting tube 120 can enter the interior from the light inlet 122 and pass through the first light deflecting component 121 to be transmitted along the axial direction of the channel 101;

a light conducting assembly 130 for conducting the light emitted from the lighting device 110 to the light inlet 122 and irradiating the light to the outside of the lighting tube 120;

and a camera assembly 140 connected to one end of the apparatus body 100 and located at the opposite side of the illumination tube 120, wherein a lens of the camera assembly 140 is aligned with the axial direction of the channel 101.

The installation method of the cylindrical inner wall detection device of the embodiment is as shown in fig. 1, and a mounting table is provided, wherein the mounting table is provided with a horizontal table surface and a vertical table surface. A linear module 300 is vertically provided on the vertical plate surface, the endoscope assembly 10 is mounted on the moving block of the linear module 300, and the main body 100 is adjusted to be coaxial with the lower chuck 230.

The equipment can be used for detecting the surface defects of the inner wall of the cylindrical part, and the operation steps are that the chuck 230 is used for clamping the cylinder A to be detected, the linear module 300 is used for driving the endoscope assembly 10 to move downwards, and the illuminating tube 120 extends into the cylinder A to be detected. The light emitted by the illumination device 110 is transmitted along the channel 101 and transmitted out from the light inlet 122, so as to illuminate the inner wall of the pipe, and the light reflected by the inner wall of the pipe enters the channel 101 from the light inlet 122 and is transmitted to the camera assembly 140; along with the up-and-down movement of the linear module 300 and the rotation of the chuck 230, the camera assembly 140 scans the inner wall of the cylinder a to be detected completely, and the circumferential appearance pictures at different axial distances are spliced by using software to form a picture of the overall appearance of the inner surface of the cylinder a to be detected, so as to detect the defects of the inner surface of the hollow pipe fitting. And finding out appearance defects such as spots, dents, microcracks and the like according to the picture of the overall appearance of the inner surface of the pipe fitting, and judging that the defects exist on the inner surface of the detected cylinder A.

Preferably, in the apparatus for detecting an inner wall of a cylindrical surface according to this embodiment, the clamping assembly 20 includes:

a base 200;

a rotating device 210 mounted on the base 200;

a turntable 220 coaxially mounted on the rotating device 210;

the chuck 230 is coaxially connected to the turntable 220 and used for clamping a cylinder to be monitored; the center of the chuck 230 is hollow;

and an elevation sleeve 240 installed at a central hollow of the chuck 230, the elevation sleeve 240 having an opening at one end.

The clamping assembly 20 of the present embodiment is used for clamping the cylinder a to be measured, and the illumination tube 120 of the endoscope assembly 10 extends into the cylinder a to be measured for image sampling. As shown in fig. 6, the light inlet 122 of the lighting tube 120 is located at the lower end of the lighting tube 120, but is at a certain distance from the end, so that the end of the lighting tube 120 needs to be extended further downward in order to enable the bottom end of the cylinder a to be tested to be sampled by the light inlet 122, as shown in fig. 6, the upper end of the heightening sleeve 240 is open to accommodate the end of the lighting tube 120, and the side wall of the heightening sleeve 240 supports the side wall of the cylinder a to be tested.

Preferably, in the apparatus for detecting an inner wall of a cylindrical surface according to this embodiment, the light conducting component is a set of prisms, and the set of prisms is installed in the channel 101, and aligned with one end of the illumination device 110, and is used for reflecting or refracting light emitted by the illumination device 110 to transmit along the axial direction of the channel 101, or transmitting light transmitted along the axial direction of the channel 101 from one end of the channel 101 to the other end.

Preferably, in the cylindrical inner wall detection device of the present embodiment, as shown in fig. 2 and 3, the light conducting component 130 includes: the lighting device comprises a first right-angle triple prism 1301 and a second right-angle triple prism 1302, wherein inclined surfaces of the first right-angle triple prism 1301 and the second right-angle triple prism 1302 are spliced to form a cuboid, the surfaces where right-angle sides are located of the first right-angle triple prism 1301 and the second right-angle triple prism 1302 are perpendicular to the axis of the channel 101, and the surfaces where right-angle sides are located of the first right-angle triple prism 1301 and the second right-angle triple prism 1302 are perpendicular to light irradiated by the lighting device 110. Through the two spliced right-angle triangular prisms, the light emitted by the lighting device 110 is reflected or refracted to be transmitted along the axial direction of the channel 101, or the light transmitted along the axial direction of the channel 101 is transmitted from one end of the channel 101 to the other end through reflection or refraction of the light.

Preferably, in the apparatus for detecting an inner wall of a cylindrical surface according to this embodiment, as shown in fig. 3, the first right triangular prism 1301 and the second right triangular prism 1302 are both isosceles right triangular prisms.

Preferably, in the apparatus for detecting an inner wall of a cylindrical surface according to this embodiment, an incident angle between a light beam irradiated by the illumination apparatus 110 and the inclined surfaces of the first right triangular prism 1301 and the second right triangular prism 1302 is smaller than a critical angle at which total reflection occurs. The parameter requires that after the light emitted by the illumination device 110 enters the light conducting assembly 130, the light is reflected and refracted at the inclined surfaces of the first right triangular prism 1301 and the second right triangular prism 1302 simultaneously, so that a part of the light is transmitted along the axial direction of the channel 101; after the light entering the lighting tube 120 from the light inlet 122 and transmitted along the axial direction of the channel 101 enters the light conducting assembly 130, a part of the light is transmitted in a straight direction and is transmitted from one end to the other end of the channel 101.

Preferably, as shown in fig. 4, one end of the apparatus main body 100 of the cylindrical inner wall detection apparatus of the present embodiment has a clamping portion 102 for clamping the illumination tube 120, a side wall of the illumination tube 120 is marked with a scale of length, and an end face of the clamping portion 102 can be aligned with the scale. The length of the lighting tube 120 exposed from the clamping portion 102 can be adjusted in advance according to the length of the pipe to be tested so as to be capable of extending into the bottom end and the top end of the cylinder a to be tested during the testing process.

Preferably, in the cylindrical inner wall detecting apparatus of this embodiment, as shown in fig. 1, the base 200 has a base main body 201 and an adjusting base 202, the adjusting base 202 is capable of moving and can be fixed on the base main body 201 through a fixing member, and the rotating device 210 is installed on the adjusting base 202. The adjustment of the position of the adjustment seat 202 on the base body 201 is used to indirectly adjust the position of the clamped cylinder a to be measured for better alignment with the illumination tube 120 of the endoscope assembly 10.

Preferably, in the apparatus for detecting an inner wall of a cylindrical surface according to this embodiment, as shown in fig. 5 and 7, two sides of the base main body 201 are provided with rails 204, two sides of the adjusting base 202 are limited between the rails 204 on two sides, and the adjusting base 202 can slide along the rails 204. The track 204 facilitates adjustment of the adjustment mount 202.

Preferably, as shown in fig. 7, in the apparatus for detecting a cylindrical inner wall of the present embodiment, a scale 2041 is disposed on the track 204, and marks 2021 for aligning scales of the scale 2041 are disposed on two sides of the adjusting seat 202. The marks 2021 are aligned with the scale of the scale 2041, which facilitates accurate adjustment of the position of the adjustment base 202.

Preferably, in the cylindrical inner wall monitoring apparatus of this embodiment, as shown in fig. 7, an adjusting mechanism 203 for adjusting the position of the adjusting seat 202 is further disposed on the base main body 201;

the adjustment mechanism 203 includes:

a fixing block 2031 fixed to the base main body 201;

a rotating rod 2032, one end of which is rotatably mounted on the fixing block 2031 and limits axial movement by a limiting block, and the other end of which is provided with threads;

a pushing block 2033 fixed on the adjusting seat 202, wherein the pushing block 2033 has a threaded hole corresponding to the thread on the rotating rod 2032.

Through rotating dwang 2032 can fine adjustment promote piece 2033 and be close to or keep away from fixed block 2031 to the realization is to the fine adjustment of adjustment seat 202, has fine adjustment promptly and has surveyed the position of drum A of clamping.

Example 2

The present embodiment provides a cylindrical inner wall detection device, which is different from embodiment 1 in that in the present embodiment, the light conducting assembly 130 is an optical fiber having one end connected to the illumination device 110 and the other end connected to the edge of the light inlet 122.

In light of the foregoing description of the preferred embodiments according to the present application, it is to be understood that various changes and modifications may be made without departing from the spirit and scope of the invention. The technical scope of the present application is not limited to the contents of the specification, and must be determined according to the scope of the claims.

Claims (10)

1. A cylindrical interior wall inspection apparatus comprising an endoscope assembly (10) and a chuck assembly (20), the endoscope assembly (10) comprising:

an apparatus main body (100) having a passage (101) through which light can pass;

an illumination device (110) attached to one side of the device body (100) and capable of irradiating the inside of the passage (101);

the lighting device comprises a lighting tube (120), one end of the lighting tube is coaxially connected to one end of the device main body (100), a first light deflection component (121) is arranged inside the other end of the lighting tube, and a light inlet (122) is formed in the position, aligned with the first light deflection component (121), of one side of the lighting tube (120); light outside the lighting tube (120) can enter the lighting tube from the light inlet (122) and is transmitted along the axial direction of the channel (101) after passing through the first light deflection component (121);

a light conducting component (130) for conducting the light emitted by the lighting device (110) to the light inlet (122) and irradiating the light to the outside of the lighting tube (120);

and the camera assembly (140) is connected to one end of the device body (100) and is positioned on the opposite side of the lighting tube (120), and the lens of the camera assembly (140) is aligned with the axial direction of the channel (101).

2. The cylindrical inner wall inspection apparatus of claim 1, wherein the clamping assembly comprises:

a base (200);

a rotating device (210) mounted on the base (200);

a turntable (220) coaxially mounted on the rotating device (210);

the chuck (230) is coaxially connected to the turntable (220) and used for clamping the cylinder to be monitored; the center of the chuck (230) is hollow;

and the heightening sleeve (240) is arranged in the central hollow part of the chuck (230), and one end of the heightening sleeve (240) is provided with an opening.

3. The cylindrical interior wall detection device of claim 2, wherein the light conducting component is a set of prisms, installed in the channel (101) and aligned with one end of the illumination device (110), for reflecting or refracting light emitted from the illumination device (110) to transmit along the axial direction of the channel (101), or transmitting light transmitted along the axial direction of the channel (101) from one end of the channel (101) to the other end.

4. The cylindrical interior wall detection device of claim 3, wherein the light conducting assembly (130) comprises: the lighting device comprises a first right-angle triple prism (1301) and a second right-angle triple prism (1302), wherein inclined surfaces of the first right-angle triple prism (1301) and the second right-angle triple prism (1302) are spliced with each other to form a cuboid, the surfaces of a right-angle side of the first right-angle triple prism (1301) and the second right-angle triple prism (1302) are perpendicular to the axis of a channel (101), and the surfaces of a right-angle side of the first right-angle triple prism (1301) and the second right-angle triple prism (1302) are perpendicular to light irradiated by lighting equipment (110).

5. The cylindrical interior wall inspection device of claim 2, wherein the light conducting component (130) is an optical fiber having one end connected to the illumination device (110) and the other end connected to the edge of the light inlet (122).

6. The cylindrical inner wall detection device according to any one of claims 2 to 5, wherein one end of the device body (100) is provided with a clamping portion (102) for clamping the illumination tube (120), the side wall of the illumination tube (120) is marked with a scale of length, and the end face of the clamping portion (102) can be aligned with the scale.

7. The cylindrical inner wall detection apparatus according to any one of claims 2 to 5, wherein the base (200) has a base main body (201) and an adjustment seat (202), the adjustment seat (202) being movable and fixable on the base main body (201) by a fixing member, the rotating means (210) being mounted on the adjustment seat (202).

8. The apparatus for detecting the inner wall of the cylindrical surface as claimed in claim 7, wherein two sides of the base main body (201) are provided with rails (204), two sides of the adjusting seat (202) are limited between the rails (204) at two sides, and the adjusting seat (202) can slide along the rails (204).

9. The apparatus for detecting the inner wall of the cylindrical surface of claim 8, wherein the track (204) is provided with a scale (2041), and the two sides of the adjusting seat (202) are provided with marks (2021) for aligning the scales of the scale (2041).

10. The apparatus for detecting the inner wall of the cylindrical surface as claimed in claim 9, wherein the base main body (201) is further provided with an adjusting mechanism (203) for adjusting the position of the adjusting seat (202);

the adjustment mechanism (203) comprises:

a fixing block (2031) fixed to the base body (201);

a rotating rod (2032) with one end rotatably mounted on the fixed block (2031) and limited by a limit block to move axially and the other end provided with a thread;

the pushing block (2033) is fixed on the adjusting seat (202), and the pushing block (2033) is provided with a threaded hole corresponding to the thread on the rotating rod (2032).

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