CN114812449A

CN114812449A - Finish degree detection device and finish degree detection method

Info

Publication number: CN114812449A
Application number: CN202210422035.9A
Authority: CN
Inventors: 周正; 范会林; 任宇新
Original assignee: Shenzhen Huitou Intelligent Control Technology Co ltd
Current assignee: Shenzhen Huitou Intelligent Control Technology Co ltd
Priority date: 2022-04-21
Filing date: 2022-04-21
Publication date: 2022-07-29
Anticipated expiration: 2042-04-21
Also published as: CN114812449B

Abstract

The invention relates to a smooth finish detection device and a smooth finish detection method, wherein the smooth finish detection device comprises a clamping jig, a detection module and a display module, a workpiece to be detected is clamped and fixed in a clamping gap of the clamping jig, the detection module can emit infrared light, part of the infrared light is absorbed by carbon dioxide gas, the rest infrared light can irradiate the inner surface of the workpiece to be detected and is reflected, the reflected infrared light can be received and converted into an electric signal by the detection module, the electric signal is converted into an AD value which can be observed by a user to represent the smooth finish of the surface of the workpiece to be detected, so that the smooth finish detection method is not influenced by the internal structure shape of the workpiece to be detected, the user can judge the smooth finish of the inner surface of the workpiece to be detected only by reading the detected AD value, the measurement method is simple and convenient, the measurement result responds to a speed block, the user is not influenced by artificial subjective factors during measurement, and the measurement result is accurate.

Description

Finish degree detection device and finish degree detection method

Technical Field

The invention relates to the technical field of surface quality detection, in particular to a finish degree detection device and a finish degree detection method.

Background

In the field of mechanical manufacturing, a large number of metal parts to be machined on an industrial production line need to meet the requirement on the smoothness of technical standards after being machined and polished, and the number of parts to be machined on site is large, the materials of different parts are different, and the machining methods are different. Different materials and various processing methods, including friction between a cutting tool and the surface of a part, plastic deformation of surface layer metal during chip separation, high-frequency vibration in a process system and other factors, can leave traces and shapes with different depths and densities on the surface of the part, so that the smoothness of the surface of the part can be influenced, and when the smoothness of the surface of the part is influenced, the detection precision of a large number of detection instruments can be influenced.

Therefore, if the surface smoothness of the parts can be rapidly detected, the production efficiency and the economic benefit can be greatly improved. The existing smoothness measuring methods mainly include a microscope comparison method and an interference microscope measuring method, wherein the microscope measuring method compares a measured sample by using a sample comparison block under a microscope and adopts a visual method or a tactile method, but the method is greatly influenced by artificial subjective factors, so that the measurement result difference is large, and the observation angle of parts with irregular shapes is also greatly limited. The interferometric microscopy method is to measure the smoothness by using a plane mirror as a reference, but the measurement accuracy of the interferometric microscopy method is influenced for cavity parts with small volume and complicated structure.

Disclosure of Invention

Therefore, it is necessary to provide a finish detection device and a finish detection method capable of quickly and easily detecting the finish of the inner surface of an irregularly-shaped part, in order to solve the problems that the conventional finish detection device and detection method are not quick and convenient to detect, and the measurement result is inaccurate due to the limitation of factors such as the shape of the workpiece to be measured during measurement.

According to one aspect of the present application, there is provided a finish detection apparatus for detecting the finish of an inner surface of a workpiece to be detected, comprising:

the clamping fixture is used for clamping a workpiece to be tested and provided with a clamping gap with a variable size, and the workpiece to be tested can be clamped in the clamping gap;

the detection module is arranged on the clamping jig and is used for being connected with the workpiece to be detected, the detection module is provided with an infrared light emitting port and an infrared light receiving port which are arranged at intervals, the infrared light emitting port can emit infrared light, and the infrared light receiving port can receive the infrared light reflected by the workpiece to be detected and convert the reflected infrared light into an electric signal for representing the inner surface finish degree of the workpiece to be detected; and

and the display module is in communication connection with the detection module and is used for displaying the detection result of the detection module.

In one embodiment, the detection module includes a substrate, a light source and an infrared sensor, the light source and the infrared sensor are electrically connected to the substrate, the light source forms the infrared light emitting port, and the infrared sensor forms the infrared light receiving port.

In one embodiment, the clamping jig includes:

the base is used for mounting the detection module;

the clamping assembly is movably arranged on the base and can move relative to the base under the action of external force so as to be capable of abutting against and clamping the workpiece to be detected.

In one embodiment, the clamping assembly includes a handle rotatably mounted on the base and a collet coupled to the handle, the collet being capable of rotating about a first direction to move toward or away from the base along with the handle to form the clamping gap with the base.

In one embodiment, the clamping assembly further comprises a hanging rack, one end of the hanging rack is connected with the grab handle, and the other end of the hanging rack is connected with the clamping head.

In one embodiment, the clip is detachably and fixedly mounted on the hanger, and the clip can be mounted at different positions on the hanger in the direction close to or far away from the grab handle.

According to another aspect of the present application, there is provided a finish detection method implemented based on the detection device as described above, the detection method including the steps of:

installing a workpiece to be tested;

starting a detection module to emit infrared light, so that part of the infrared light is absorbed by carbon dioxide gas in the environment, and the rest of the infrared light is reflected by the inner surface of the workpiece to be detected;

and measuring by the detection module to obtain a measured value of the inner surface finish of the workpiece to be measured.

In one embodiment, the step of installing the workpiece to be tested further includes the following steps:

covering a workpiece to be tested on a substrate so as to enable a light source on the substrate to be contained in the workpiece to be tested;

and clamping the workpiece to be tested.

In one embodiment, the step of clamping the workpiece to be tested further includes the following steps:

rotating the grab handle to make the chuck abut against the workpiece to be tested;

and fixing the chuck to ensure that the workpiece to be tested is fixedly arranged in the clamping gap.

In one embodiment, the step of measuring to obtain a measured value of the inner surface finish of the workpiece includes the steps of:

receiving the reflected infrared light by an infrared sensor on the substrate;

converting the reflected infrared light into an electrical signal;

and converting the electric signal into an AD value, wherein when the AD value is within a specified range, the inner surface finish of the workpiece to be tested meets the requirement.

According to the finish degree detection device and the finish degree detection method, the clamping jig with the variable clamping gap is arranged in the finish degree detection device, the detection module is arranged on the clamping jig, and the display module electrically connected to the detection module is arranged, so that a workpiece to be detected can be conveniently installed in the finish degree detection device and is convenient to disassemble and assemble. When in detection, the workpiece to be detected is clamped and fixed in the clamping gap of the clamping fixture, the workpiece to be detected is connected with the detection module, meanwhile, the infrared light emitting port of the detection module can emit infrared light, part of the infrared light is absorbed by carbon dioxide gas in the environment, the rest infrared light can irradiate the inner surface of the workpiece to be detected and is reflected by the inner surface of the workpiece to be detected, the reflected infrared light can be received by the infrared light receiving port of the detection module and is converted into an electric signal, the electric signal is converted into an AD value which can be observed by a user by the display module to represent the smoothness of the surface of the workpiece to be detected, so that the smoothness detection method is not influenced by the internal structure shape of the workpiece to be detected, the smoothness of the inner surface of the workpiece with an inner cavity in any shape can be detected, and the user can judge the smoothness of the inner surface of the workpiece to be detected only by reading the detected AD value, the measuring method is simple and convenient, the measuring result responds to the speed block, the user is not influenced by artificial subjective factors during measurement, and the measuring result is accurate.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only one embodiment of the present invention, and for those skilled in the art, other embodiments can be obtained from the drawings without creative efforts.

FIG. 1 is a schematic perspective view of a finish detection apparatus provided with a workpiece to be detected according to an embodiment of the present invention;

FIG. 2 is a schematic perspective view of a finish detection apparatus provided in an embodiment of the present invention without a workpiece being tested;

FIG. 3 is an enlarged view of area A of FIG. 2;

fig. 4 is a schematic perspective view of a detection module according to an embodiment of the present invention;

fig. 5 is an exploded view of a finish detection device provided with a workpiece to be detected according to an embodiment of the invention.

Description of reference numerals:

10. a finish detection device;

100. clamping a jig; 110. a base; 111. a base body; 1111. an installation position; 1112. a limiting groove; 112. mounting blocks; 1121. a through hole; 113. a connecting member; 120. a clamping assembly; 121. a handle; 122. a hanger; 1221. a first connection end; 1222. a second connection end; 123. a chuck; 1231. a nut; 1232. mounting holes;

200. a detection module; 210. a substrate; 211. a pin; 220. a light source; 230. an infrared sensor; 30. a workpiece to be tested; 31. a housing; 32. a separator.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "level," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" 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" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or obliquely above the second feature, or may simply mean that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "beneath" a second feature may be directly or obliquely under the first feature or may simply mean that the first feature is at a lesser level than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "up," "down," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.

As mentioned in the background of the invention, the surface of a part is affected by a large number of parts to be machined on an industrial production line, and due to factors such as friction between a cutting tool and the surface of the part, plastic deformation of surface layer metal during chip separation, and high-frequency vibration in a process system, the surface of the part is left with traces and shapes with different depths and densities, so that the surface smoothness of the part is also affected. Taking an NDIR (Non Dispersive Infra-Red) carbon dioxide sensor as an example, the sensor is used for measuring the concentration of carbon dioxide in the environment, and since the sensor needs to reflect the incident infrared light by using the gas chamber inside the sensor to obtain the concentration of the carbon dioxide, when the smoothness of the gas chamber is affected, the detection accuracy of the sensor on the carbon dioxide in the environment is also affected.

The traditional method for detecting the smoothness generally adopts a visual method or a touch method to measure the smoothness manually, the method is greatly influenced by human subjective factors, so that the measurement result difference is large, the observation angle of parts with irregular shapes is greatly limited, and the measurement accuracy is greatly reduced.

In order to solve the above problem, the present inventors have conducted extensive studies and have devised a finish detection apparatus and a finish detection method capable of quickly and easily detecting the finish of the inner surface of an irregularly shaped part.

According to the principle of non-dispersive infrared (NDIR), when a beam of parallel monochromatic light passes through a uniform and non-scattering light-absorbing substance perpendicularly, the absorbance is proportional to the concentration of the light-absorbing substance and the thickness of the absorbing layer. Based on the non-dispersive infrared (NDIR) principle, the NDIR carbon dioxide sensor works on the principle that carbon dioxide gas to be detected continuously passes through a gas chamber with a certain volume, a broad-spectrum light source is utilized to emit a beam of infrared light with the wavelength of 1-20 μm from one end of the gas chamber into the gas chamber, the carbon dioxide gas can absorb the infrared light with the wavelength of 4.26 μm, so that the infrared light beam passes through a narrow-band filter with the wavelength of 4.26 μm, the infrared light beam with the wavelength of 4.26 μm is filtered out, part of the infrared light with the wavelength of 4.26 μm can be absorbed by the carbon dioxide gas, the rest infrared light is reflected by the inner wall of the gas chamber and then reflected to the other end of the gas chamber, the radiation intensity of the infrared light with the wavelength of 4.26 μm is measured by the infrared sensor at the other end of the gas chamber, and when the concentration of the carbon dioxide gas in the environment is different, the voltage value obtained by converting and outputting the infrared light with the wavelength of 4.26 μm can be correspondingly changed, according to the principle that the absorption of infrared rays is in direct proportion to the concentration of the light absorbing substance, the voltage value is converted into a result which can be displayed and read by a user, and then the concentration of the carbon dioxide gas can be represented.

Based on this, the inventor of the present application thinks that the working principle of measuring the carbon dioxide gas concentration by the NDIR carbon dioxide sensor itself can be utilized to measure the smoothness of the surface of the gas chamber in the NDIR carbon dioxide sensor, and because the carbon dioxide gas concentration in the environment is constant in the same environment, when the smoothness of the surface of the gas chamber is different, the incident infrared light into the gas chamber can also cause the output voltage to change correspondingly, so that the smoothness of the surface of the gas chamber can also be known. The detection method solves the problems that the existing finish degree detection method is not fast and simple enough in detection, and is restricted by factors such as the shape of a workpiece to be detected during detection, so that the measurement result is inaccurate.

The structure and the method for detecting the smoothness of the surface of the air chamber of the NDIR carbon dioxide sensor are described in detail below, which is only an example and does not limit the technical scope of the present application. It is understood that in other embodiments, the finish detection apparatus and the finish detection method disclosed in the present application can be used for detecting the surface finish of the air chamber of the NDIR carbon dioxide sensor, and can also be used for detecting the inner surface finish of other types of parts, which are not limited herein.

Some preferred embodiments of the finish detection apparatus and the finish detection method provided by the present application are described below with reference to fig. 1 to 5.

As shown in fig. 1 and 2, a finish detecting device 10 includes a clamping fixture 100, a detecting module 200, and a display module (not shown). The clamping fixture 100 is used for clamping a workpiece and has a clamping gap with a variable size, and the workpiece 30 to be tested can be clamped in the clamping gap; the detection module 200 is arranged on the clamping fixture 100 and used for connecting the workpiece 30 to be detected, and the detection module 200 has an infrared light emitting port and an infrared light receiving port which are arranged at intervals, wherein the infrared light emitting port can emit infrared light, the infrared light receiving port can receive the infrared light reflected by the workpiece 30 to be detected, and the reflected infrared light is converted into an electric signal for representing the finish degree of the inner surface of the workpiece to be detected; the display module is communicatively connected to the detection module 200, and is configured to display a detection result of the detection module 200.

In some embodiments, the clamping fixture 100 includes a base 110 and a clamping assembly 120, wherein the base 110 is used for mounting the detection module 200, and the clamping assembly 120 is movably mounted on the base 110. Specifically, the base 110 includes a base body 111, a mounting block 112, and a connector 113. The base body 111 is provided with a recessed mounting position 1111, the mounting block 112 is mounted on the base body 111 and received in the mounting position 1111, and the detection module 200 is mounted on the upper surface of the mounting block 112.

In a preferred embodiment, the mounting block 112 is detachably mounted on the base body 111, and is specifically realized by that, two opposite side walls of the mounting portion 1111 are provided with a limiting groove 1112, and when the mounting block 112 is mounted on the base body 111, two sides of the mounting block are limited in the limiting groove 1112, and can slide into and be accommodated in the mounting portion 1111 along the limiting groove 1112, and placed on the bottom wall of the mounting portion 1111. Since the mounting block 112 is detachably mounted on the base body 111, a user can conveniently replace the mounting block 112 with different heights so as to conveniently adapt to and mount the workpieces 30 to be tested with different height sizes. In other embodiments, the mounting block 112 may be fixed to the base body 111 and formed by integral processing with the base body 111, which is not limited herein.

Preferably, the height of the mounting block 112 is smaller than the depth of the mounting position 1111, so that when the mounting block 112 is installed in the mounting position 1111, the upper surface of the mounting block is lower than the upper surface of the base body 111, and when the workpiece 30 under test is connected to the detection module 200, the mounting block is also at least partially accommodated in the mounting position 1111, thereby enabling the workpiece 30 under test to be conveniently clamped and fixed.

Furthermore, a through hole 1121 penetrating through the mounting block 112 is formed in the mounting block 112, and the through hole 1121 is used for reducing the weight of the mounting block 112 and also for routing. The connecting member 113 is fixedly mounted on the upper surface of the base body 111 for connecting the clamping assembly 120, and the clamping assembly 120 is movably mounted on the connecting member 113 and can move relative to the base 110 under the action of an external force, so as to abut against and clamp the workpiece.

In some embodiments, the clamping assembly 120 includes a handle 121, a hanger 122, and a collet 123. One end of the handle 121 is rotatably installed on the connecting member 113 of the base 110, and the other end of the handle 121 is held by a user; the hanging rack 122 is arranged vertically to the grab handle 121, one end of the hanging rack 122 is connected with the grab handle 121 and is rotatably connected with the connecting piece 113, and the other end of the hanging rack 122 is connected with the chuck 123, so that the chuck 123 is matched and connected with the grab handle 121 through the hanging rack 122; the clip 123 is detachably and fixedly installed on the hanger 122, and the clip 123 is vertically disposed with respect to the hanger 122 such that the clip 123 and the grip 121 are parallel to each other.

Specifically, as shown in fig. 3, one end of the grip 121 and the connection member 113 of the base 110 are hinged to each other; the end of the hanger 122 away from the clamping head 123 has a first connection end 1221 and a second connection end 1222, the first connection end 1221 and the second connection end 1222 are perpendicular to each other, wherein the first connection end 1221 is hinged to the handle 121, and the second connection end 1222 is hinged to the connection member 113 of the base 110. Therefore, through the above connection manner, when the handle 121 and the hanger 122 can rotate together relative to the base 110, the handle 121 and the hanger 122 do not move relatively, and the disassembly and assembly can be facilitated.

Preferably, the hanger 122 is formed with a mounting hole 1232 penetrating through the hanger 122 at two opposite ends in the axial direction of the clip 123, the dashed-dotted line in fig. 3 indicates the axial direction of the clip 123, the mounting hole 1232 is approximately a waist hole, the long side of the mounting hole 1232 extends in the direction perpendicular to the handle 121, the clip 123 penetrates through the mounting hole 1232 and is detachably mounted on the outer periphery of the mounting hole 1232, and the clip 123 is fixed to the hanger 122 by a nut 1231, and the mounting position of the clip 123 on the hanger 122 can be changed by loosening the nut 1231. Specifically, the collet 123 can be mounted at different positions on the hanger 122 in a direction approaching or departing from the grip 121 (i.e., in an extending direction along the length of the mounting hole 1232), and when the width dimension of the workpiece 30 to be measured changes, the workpiece 30 to be measured can be clamped more firmly by adjusting the mounting position of the collet 123 on the hanger 122.

Thus, when the user holds the grip 121 to rotate around an axial direction perpendicular to the chuck 123, the hanger 122 and the chuck 123 can be driven to rotate together around the axial direction perpendicular to the chuck 123, so that the chuck 123 can be close to or far away from the base 110 to form a clamping gap with a variable size with the base 110, thereby facilitating clamping of the workpieces 30 to be tested with different height sizes, and facilitating detachment of the workpieces 30 to be tested from the clamping fixture 100, taking out the workpieces 30 to be tested, and replacing the workpieces 30 to be tested with new workpieces 30.

In some embodiments, as shown in fig. 4, the detection module 200 includes a substrate 210, a light source 220, and an infrared sensor 230. The substrate 210 is mounted on the mounting block 112 of the base 110, and the light source 220 and the infrared sensor 230 are electrically connected to the substrate 210, respectively. The light source 220 is used for emitting infrared light to form an infrared light emitting port of the detection module 200; the infrared sensor 230 is used for receiving the infrared light reflected by the workpiece 30 to be detected to form an infrared light receiving port of the detection module 200, and converting the infrared light signal into an electrical signal, such as a current signal or a voltage signal, and the substrate 210 is used for supplying power to the light source 220 and the infrared sensor 230.

Preferably, the infrared sensor 230 may be an infrared thermopile sensor, in which the thermopile is composed of a plurality of thermocouples connected in series, when infrared light is applied to the thermopile, the thermocouples of the thermopile are heated to generate a small thermoelectric voltage signal, so as to be conveniently amplified and converted into a displayable detection result, which may be an Analog signal or an AD (Analog-to-Digital) value displayed in a curved form, etc., as long as the Analog signal or the AD value can be recognized by a user to obtain the inner surface finish of the workpiece 30, and in the finish detection apparatus provided in the present application, the final displayed result is an AD value, and the user can know the inner surface finish of the workpiece 30 by reading the AD value.

The substrate 210 has a plurality of pins 211 arranged at intervals for communication with the display module, so as to transmit the converted electrical signal to the display module for the display module to amplify and display the electrical signal.

In this embodiment, as shown in fig. 1, 3 and 5, the workpiece 30 to be measured is a housing of the NDIR carbon dioxide sensor, and includes a casing 31 and a partition 32, where the partition 32 and the casing 31 together form an optical air chamber of the NDIR carbon dioxide sensor, and the optical air chamber may have any irregular shape. Referring to fig. 1 and 5, the method for detecting the surface smoothness of the air chamber of the NDIR carbon dioxide sensor based on the above-mentioned smoothness detection device 10 provided by the present application is as follows:

firstly, the workpiece 30 to be measured is installed, the workpiece 30 to be measured is covered on the substrate 210, and the light source 220 on the substrate 210 is contained in the workpiece 30 to be measured, so that infrared light emitted by the light source 220 can not leak out of the workpiece 30 to be measured, reflection and absorption can be fully performed in the workpiece 30 to be measured, and the accuracy of a measurement result is ensured.

Secondly, clamping the workpiece 30 to be tested, and rotating the grab handle 121 to make the chuck 123 abut against the workpiece 30 to be tested; and tightening the nut 1231 on the clamping head 123 to enable the clamping head 123 to press the workpiece 30 to be detected, so as to fix the workpiece 30 to be detected on the detection module 200.

Third, the detection module 200 is turned on, the light source 220 of the detection module 200 emits infrared light, a part of the infrared light is absorbed by carbon dioxide gas in the environment, and the remaining infrared light is reflected by the inner surface of the workpiece 30 to be detected.

And fourthly, measuring and reading the AD value of the inner surface finish of the measured workpiece 30. Specifically, the infrared sensor 230 on the detection module 200 receives the reflected infrared light, the infrared light is applied to the thermopile of the infrared sensor 230, the thermopile is heated to generate a smaller thermoelectric voltage signal, and then the voltage signal is subjected to operational amplification; the amplified voltage signal is sampled, quantized and encoded by a display module and then converted into an AD numerical value which can be displayed and read.

As mentioned above, according to the working principle of the NDIR carbon dioxide sensor, the absorption degree of the carbon dioxide gas with different concentrations to the infrared light with the same wavelength is different, and the light intensity detected by the infrared sensor 230 is also different, under the same environment, the concentration of the carbon dioxide gas in the air is usually kept within a certain range, the smoothness of the inner surface of the workpiece 30 is different, and the measured AD value is also different, so that the smoothness of the inner surface of the workpiece 30 can be represented, and when the AD value is within a specified range, for example, within the range of 10000-.

The finish detection method at least has the following technical effects: the detection method is not influenced by the internal structure of the workpiece 30 to be detected, carbon dioxide gas in air in the sensor air chamber is detected by utilizing a non-dispersive infrared (NDIR) principle no matter the air chamber is in any shape, and an AD value is finally returned.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express one of the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A finish inspection apparatus for inspecting the finish of the interior surface of a workpiece under inspection, comprising:

2. The finish detection device of claim 1, wherein the detection module comprises a substrate, a light source and an infrared sensor, the light source and the infrared sensor are electrically connected to the substrate, the light source forms the infrared light emitting opening, and the infrared sensor forms the infrared light receiving opening.

3. The finish detection device of claim 1, wherein the clamping fixture comprises:

the base is used for mounting the detection module;

the clamping component is movably arranged on the base and can move relative to the base under the action of external force so as to abut against and clamp the workpiece to be detected.

4. The finish detection device of claim 3, wherein the clamping assembly comprises a handle rotatably mounted on the base and a collet coupled to the handle, the collet being capable of following the handle to rotate in an axial direction perpendicular to the collet to move toward or away from the base to form the clamping gap with the base.

5. The finish detection device of claim 4, wherein the clamping assembly further comprises a hanger, one end of the hanger is connected with the handle, and the other end of the hanger is connected with the chuck.

6. The finish detection apparatus of claim 5, wherein the cartridge is removably fixedly mounted to the hanger, the cartridge being mountable at different locations on the hanger in directions toward and away from the grip.

7. A finish detection method, characterized in that the detection method is realized based on the detection device of any one of claims 1 to 6, and the detection method comprises the following steps:

installing a workpiece to be tested;

8. The finish inspection method of claim 7, wherein said step of mounting the workpiece under test further comprises the steps of:

and clamping the workpiece to be tested.

9. The finish inspection method of claim 8, wherein said step of clamping said workpiece under test further comprises the steps of:

10. The finish detection method of claim 8, wherein said step of measuring a measured value of the finish of the inner surface of the workpiece comprises the steps of:

receiving the reflected infrared light by an infrared sensor on the substrate;

converting the reflected infrared light into an electrical signal;