Hole shape and position measuring device and method

Abstract

The present invention provides a hole shape and position measuring device and method, which relates to the technical field of testing materials by measuring the physical properties of the materials; the device includes: a substrate having an avoidance hole; a wind source for generating wind blowing toward the avoidance hole; a detection tube capable of longitudinally penetrating the avoidance hole; the outer wall of the detection tube capable of sliding and sealing contact with the inner wall of the standard hole, or the top of the detection tube capable of sealing contact with the lower side of the tested object; a tube position detection mechanism for measuring whether the detection tube is inserted into the hole to be tested; an air leakage detection mechanism for measuring whether there is air leakage between the detection tube and the hole to be tested; and a wind speed detection mechanism for measuring whether there is wind flowing in the detection tube. The method applies the above device. Compared with the method of using ultraviolet light and color-changing materials for combined detection, this embodiment does not require the operation of waiting for the color-changing material to recover or replacing the color-changing material during batch detection, and the efficiency of batch detection is higher.

Description

Technical Field

[0001] The present invention relates to the technical field of testing materials by means of measuring the physical properties of the materials, and in particular to a hole shape and position measuring device and method. Background Art

[0002] Sheet metal punching is a metal processing technology that uses punching dies to punch metal sheets into holes of various shapes and sizes through punching equipment such as stamping machines. This processing method is widely used in industries such as automobile manufacturing, electronic equipment, and home appliance manufacturing to meet the assembly and use requirements of products.

[0003] After sheet metal punching, the shape and position of the punched holes need to be inspected. Generally, there are four defects:

[0004] 1. Small hole: the actual hole diameter is smaller than the standard hole diameter;

[0005] 2. Large hole: the actual hole diameter is larger than the standard hole diameter;

[0006] 3. Deviation hole: The actual position of the hole is offset from the standard position;

[0007] 4. Leakage hole: There is no hole at the standard position, and there is a leak.

[0008] The above-mentioned standard aperture and standard position belong to the shape and position of standard holes. Standard holes refer to holes used as testing standards (or references).

[0009] In the existing technology, the shape and position of holes on sheet metal are detected by combining ultraviolet light with color-changing materials, and the effect is good. However, when performing batch detection, it is necessary to wait for the color-changing material to recover before detecting the next batch, or the color-changing material needs to be replaced frequently. The efficiency needs to be improved and there is room for further improvement. Summary of the invention

[0010] In view of the above situation, the present invention provides a hole shape and position measuring device and method, aiming to solve the technical problem in the prior art that the shape and position of holes on sheet metal are detected by combining ultraviolet light and color-changing materials, which has good effect. However, when performing batch detection, it is necessary to wait for the color-changing material to recover before detecting the next batch, or the color-changing material needs to be replaced frequently, and the efficiency needs to be improved.

[0011] To achieve the above object, the present invention provides the following technical solutions:

[0012] In a first aspect, the present invention provides a hole shape and position measuring device, comprising:

[0013] A substrate for placing the test piece has avoidance holes, the avoidance holes correspond to the standard holes one by one, and the diameter of the avoidance holes is larger than the diameter of the standard holes;

[0014] A wind source disposed above the substrate, used to generate wind blowing toward the avoidance hole;

[0015] The detection tube disposed below the substrate can vertically penetrate the avoidance hole; the outer wall of the detection tube can be in sliding and sealing contact with the inner wall of the standard hole, or the top of the detection tube can be in sealing contact with the lower side of the test piece;

[0016] A tube position detection mechanism, used to measure whether the detection tube is inserted into the hole to be detected;

[0017] An air leakage detection mechanism, used to measure whether there is air leakage between the detection tube and the hole to be detected;

[0018] The wind speed detection mechanism is used to measure whether there is wind flowing in the detection tube.

[0019] In some embodiments of the present invention, the hole shape and position measuring device further comprises:

[0020] A support plate is arranged below the base plate, and the detection tube slides longitudinally through the support plate;

[0021] The spring is used to enable the detection tube to move upward and reset after moving downward.

[0022] In some embodiments of the present invention, the hole shape and position measuring device further includes an indicating mechanism, which is used to indicate the condition of the hole to be measured based on the detection results of the pipe position detection mechanism, the air leakage detection mechanism and the wind speed detection mechanism.

[0023] In some embodiments of the present invention, the indicating mechanism includes a non-hole-entry indicator light, an air leakage indicator light, and a non-air-outlet indicator light arranged in the detection tube, the non-hole-entry indicator light, the air leakage indicator light, and the non-air-outlet indicator light can respectively generate a light beam that vertically penetrates the hole to be detected upward, and the light beam generated by the non-air-outlet indicator light is coaxial with the detection tube;

[0024] The non-entry-into-hole indicator light is associated with the pipe position detection mechanism;

[0025] The air leakage indicator light is associated with the air leakage detection mechanism;

[0026] The no-wind indicator light is associated with the wind speed detection mechanism.

[0027] In some embodiments of the present invention, the pipe position detection mechanism includes a non-hole-entering button electrically connected to the non-hole-entering indicator light; the non-hole-entering button is arranged below the detection tube, and the two can contact or separate from each other.

[0028] In some embodiments of the present invention, the air leakage detection mechanism includes:

[0029] A first annular cover is arranged on the upper outer wall of the detection tube, the top of the first annular cover is open and can be in sealing contact with the lower side of the object to be detected; the first annular cover has a first placement cavity inside, and the bottom wall of the first annular cover has an air hole connected with the first placement cavity;

[0030] A pneumatic plate is arranged in the first storage cavity, and a gap is left between the side wall of the pneumatic plate and the side wall of the first storage cavity;

[0031] A pneumatic rod, one end of which is connected to the lower side of the pneumatic plate, and the other end of which is longitudinally slidably connected to the bottom of the first annular cover;

[0032] A sealing baffle ring, arranged on the side wall of the first storage cavity and located above the pneumatic plate;

[0033] A first compression spring, used to make the upper side of the pneumatic plate contact the sealing ring;

[0034] An air leakage button is arranged on the side wall of the first storage cavity and is located below the pneumatic plate; the air leakage button is electrically connected to the air leakage indicator light.

[0035] In some embodiments of the present invention, the wind speed detection mechanism includes:

[0036] A second annular cover is arranged on the upper outer wall of the detection tube, the first annular cover is located between the second annular cover and the detection tube; the top of the second annular cover is open and can be in sealing contact with the lower side of the object to be detected; the second annular cover has a second storage cavity;

[0037] A first movable stopper, whose side wall is longitudinally slidably sealed with the upper side wall of the second storage cavity; the upper side of the first movable stopper, the upper side wall of the second storage cavity and the lower side of the test piece can be enclosed together to form a closed space;

[0038] A second movable stopper is arranged below the first movable stopper, and the side wall of the second movable stopper is longitudinally slidably sealed with the upper side wall of the second storage cavity; a push rod is connected to the upper side of the second movable stopper, and the push rod slides and seals through the first movable stopper; the second movable stopper has a through hole;

[0039] A non-air outlet button is arranged on the upper side wall of the second storage cavity and is located above the first movable plug, and the upper end of the push rod can contact or separate from the non-air outlet button;

[0040] a second compression spring, used to make the upper end of the push rod contact the non-air outlet button;

[0041] A catheter has one end connected to the detection tube and the other end connected to the lower part of the second storage cavity.

[0042] In some embodiments of the present invention, the hole shape and position measuring device also includes a plurality of sensor components arranged above the substrate, each of the sensor components corresponds to a standard hole; each of the sensor components includes three sensors, and the three sensors are respectively used to detect light beams of different colors generated by the non-hole entry indicator light, the air leakage indicator light and the non-air outlet indicator light.

[0043] In a second aspect, the present invention provides a method for measuring the shape and position of a hole, comprising:

[0044] Step S1, placing the device to be tested on the substrate; the no-air-outlet indicator light is turned on to generate a vertical upward light beam; adjusting the position of the device to be tested so that the light beams generated by at least three of the no-air-outlet indicator lights are coaxial with at least three holes to be tested respectively;

[0045] Step S2, leveling the test piece; starting the wind source;

[0046] Step S3, measuring whether the detection tube is inserted into the hole to be measured by the tube position detection mechanism, measuring whether there is air leakage between the detection tube and the hole to be measured by the air leakage detection mechanism, and measuring whether there is wind flowing in the detection tube by the wind speed detection mechanism; based on the detection results of the tube position detection mechanism, the air leakage detection mechanism and the wind speed detection mechanism, it is determined whether the hole to be measured belongs to the following situations:

[0047] Pass: The indicator light for no hole entry is off, the indicator light for air leakage is off, and the indicator light for no air outlet is off;

[0048] Large hole: The indicator light for no hole entry goes out, the indicator light for air leakage turns on, and the indicator light for no air outlet goes out;

[0049] Small hole: The indicator light for no hole entry is on, the indicator light for air leakage is off, and the indicator light for no air outlet is off;

[0050] Side hole: The no-hole indicator light is on, the air leakage indicator light is on, and the no-air-out indicator light is off;

[0051] Leakage: No light beam generated by the air outlet indicator light is detected or observed above the test piece;

[0052] Step S4, turning off the wind source and taking away the test piece; determining whether to scrap the corresponding test piece or rework and repair it according to the condition of the hole to be tested;

[0053] Step S5: repeat steps S1 to S4 to detect other test pieces.

[0054] In a third aspect, the present invention provides a method for measuring the shape and position of a hole, comprising:

[0055] Step S1, placing the device to be tested on the substrate; the no-air-outlet indicator light is turned on to generate a vertical upward light beam; adjusting the position of the device to be tested so that the light beams generated by at least three of the no-air-outlet indicator lights are coaxial with at least three holes to be tested respectively;

[0056] Step S2, leveling the test piece; starting the wind source;

[0057] Step S3, measuring whether the detection tube is inserted into the hole to be measured by the tube position detection mechanism, measuring whether there is air leakage between the detection tube and the hole to be measured by the air leakage detection mechanism, and measuring whether there is wind flowing in the detection tube by the wind speed detection mechanism; based on the detection results of the tube position detection mechanism, the air leakage detection mechanism and the wind speed detection mechanism, it is determined whether the hole to be measured belongs to the following situations:

[0058] Pass: The indicator light for no hole entry is off, the indicator light for air leakage is off, and the indicator light for no air outlet is off;

[0059] Large hole: The indicator light for no hole entry goes out, the indicator light for air leakage turns on, and the indicator light for no air outlet goes out;

[0060] Small hole: The indicator light for no hole entry is on, the indicator light for air leakage is off, and the indicator light for no air outlet is off;

[0061] Side hole: The no-hole indicator light is on, the air leakage indicator light is on, and the no-air-out indicator light is off;

[0062] Leakage: Detect or observe that the no-air indicator light is on above the test piece;

[0063] Step S4, turn off the air source and take away the test piece; determine whether to scrap the corresponding test piece or rework and repair it according to the condition of the hole to be tested;

[0064] Step S5: repeat steps S1 to S4 to detect other test pieces.

[0065] The embodiments of the present invention have at least the following advantages or beneficial effects:

[0066] The detection tube is used as a reference (the outer diameter of the detection tube matches the standard aperture), and the tube position detection mechanism, air leakage detection mechanism and wind speed detection mechanism are used to measure the difference between the shape and position of the hole to be tested on the test piece and the standard hole, so as to know whether the hole to be tested is qualified or unqualified (there is a defect); when the hole to be tested is unqualified, it can also be known which defect it belongs to, so as to determine whether the corresponding test piece will be scrapped (large hole, offset hole) or reworked (small hole, leaking hole) in the future. Compared with the method of using ultraviolet light and color-changing materials for combined detection, this embodiment does not have the operation of waiting for the color-changing material to recover or replace the color-changing material during batch detection, and the efficiency of batch detection is higher.

[0067] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practicing the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0069] Figure 1 This is a schematic diagram of the structure of the hole shape and position measurement device. Figure 1 The direction indicated by the arrow in the middle is the wind direction;

[0070] Figure 2 for Figure 1 A partial enlarged view of position A in the middle;

[0071] Figure 3 for Figure 2 A partial enlarged view of position B in the middle.

[0072] icon:

[0073] 1-base plate, 11-avoidance hole,

[0074] 2-detection tube, 21-support plate, 22-spring,

[0075] 31-Unhole button,

[0076] 41-first annular cover, 411-first storage cavity, 412-air hole, 42-pneumatic plate, 43-pneumatic rod, 44-sealing baffle ring, 45-first compression spring, 46-air leakage button,

[0077] 51-second annular cover, 511-second storage cavity, 52-first movable plug, 53-second movable plug, 531-top rod, 532-through hole, 54-no air outlet button, 55-second compression spring, 56-pipe, 57-enclosed space,

[0078] 61-No hole indicator, 62-Air leakage indicator, 63-No air outlet indicator,

[0079] 7-test piece, 71-test hole. DETAILED DESCRIPTION

[0080] In the following, only some exemplary embodiments are briefly described. As those skilled in the art can realize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the embodiments of the present invention.

[0081] In the description of the embodiments of the present invention, it should be understood that the terms "longitudinal", "upper", "lower", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the embodiments of the present invention.

[0082] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0083] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0084] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0085] First, see Figure 1~Figure 3 The present embodiment provides a hole shape and position measuring device, including a substrate 1, a wind source (not shown in the figure), a detection tube 2, a tube position detection mechanism, an air leakage detection mechanism and a wind speed detection mechanism.

[0086] The substrate 1 is arranged at a designated position for placing a test piece 7, which has a test hole 71; the substrate 1 has an avoidance hole 11, which corresponds to a standard hole one by one, and the aperture of the avoidance hole 11 is larger than the standard aperture (the aperture of the standard hole).

[0087] The wind source is arranged above the substrate 1, and includes a fan, which is used to generate wind (or airflow) blowing toward the hole to be tested 71 and the avoidance hole 11. There can be multiple wind sources or one wind source; when there is one wind source, it is sufficient to cover all the avoidance holes 11; when there are multiple wind sources, the wind sources correspond to the avoidance holes 11 one by one.

[0088] The detection tube 2 is arranged below the substrate 1 and can penetrate the avoidance hole 11 longitudinally; the outer diameter of the detection tube 2 matches the standard hole diameter; the outer wall of the detection tube 2 can be in sliding and sealing contact with the inner wall of the standard hole, or the flat top of the detection tube 2 can be in sealing contact with the lower side of the test piece 7.

[0089] The pipe position detection mechanism is used to measure the vertical position change of the detection pipe 2. At least two results can be obtained through the pipe position detection mechanism: the detection pipe 2 is at the upper limit position and the detection pipe 2 is inserted into the hole 71 to be tested; or the detection pipe 2 is at the lower limit position and the detection pipe 2 is not inserted into the hole 71 to be tested.

[0090] The air leakage detection mechanism is used to measure whether there is a gap greater than a specified value between the detection tube 2 and the hole to be tested 71. The air leakage detection mechanism can obtain at least two results: air leakage between the detection tube 2 and the hole to be tested 71, or no air leakage between the detection tube 2 and the hole to be tested 71.

[0091] The wind speed detection mechanism is used to measure whether there is wind flow with a flow rate reaching a predetermined value in the detection tube 2; at least two results can be obtained through the wind speed detection mechanism: there is wind flow in the detection tube 2, or there is no wind flow in the detection tube 2.

[0092] According to the detection results of the pipe position detection mechanism, the air leakage detection mechanism and the wind speed detection mechanism, it can be reflected that the hole to be tested 71 belongs to the following situations:

[0093] Pass: The detection tube 2 is inserted into the hole 71 to be tested, there is no air leakage between the detection tube 2 and the hole 71 to be tested, and there is air flowing in the detection tube 2;

[0094] Large hole: the detection tube 2 is inserted into the hole to be tested 71, there is air leakage between the detection tube 2 and the hole to be tested 71, and there is air flowing in the detection tube 2;

[0095] Small hole: the detection tube 2 is not inserted into the hole to be measured 71, there is no air leakage between the detection tube 2 and the hole to be measured 71, and there is air flowing in the detection tube 2;

[0096] Offset hole: the detection tube 2 is not inserted into the hole to be tested 71, there is air leakage between the detection tube 2 and the hole to be tested 71, and there is air flowing in the detection tube 2;

[0097] Leakage hole: there is no wind flowing in the detection tube 2; or, the detection tube 2 is not inserted into the hole to be tested 71, and there is no wind flowing in the detection tube 2.

[0098] When in use, the piece to be tested 7 is placed on the substrate 1 so that the avoidance hole 11 of the substrate 1 is aligned with the hole to be tested 71 on the piece to be tested 7. At this time, the detection tube 2 is inserted into the hole to be tested 71, and the outer wall of the detection tube 2 is in sliding and sealing contact with the inner wall of the standard hole, or the top of the detection tube 2 is in sealing contact with the lower side of the piece to be tested 7, and the wind source generates wind and blows it toward the hole to be tested 71 and the detection tube 2; the detection tube 2 is used as a reference (the outer diameter of the detection tube 2 matches the standard hole diameter), and the tube position detection mechanism, the air leakage detection mechanism and the wind speed detection mechanism are used to measure the difference between the shape and position of the hole to be tested 71 and the standard hole, so as to know whether the hole to be tested 71 is qualified or unqualified (there is a defect); when the hole to be tested 71 is unqualified, it can also be known what kind of defect it is, so as to determine whether the corresponding piece to be tested 7 will be scrapped (large hole, biased hole) or reworked and repaired (small hole, leaking hole) in the future. Compared with the method of using ultraviolet light and color-changing materials for detection, this embodiment does not require the operation of waiting for the color-changing materials to recover or replace the color-changing materials during batch detection, and the efficiency of batch detection is higher.

[0099] In a specific implementation scenario, the detection tube 2 is arranged below the substrate 1 and can penetrate the avoidance hole 11 longitudinally, which is achieved in the following manner: the hole shape and position measuring device also includes a support plate 21 and a spring 22; the support plate 21 is arranged below the substrate 1, and the detection tube 2 longitudinally slides through the support plate 21; the spring 22 is sleeved on the lower part of the detection tube 2, and is used to move the detection tube 2 upward and reset after moving downward. In the process of placing the test piece 7 on the substrate 1 and aligning the avoidance hole 11 of the test piece 7 with the test hole 71 on the test piece 7, the detection tube 2 can be inserted into the test hole 71 under the action of the spring 22, or the top of the detection tube 2 is in sealing contact with the lower side of the test piece 7.

[0100] The hole shape and position measuring device also includes an indicating mechanism, which is used to indicate the situation of the hole 71 to be measured according to the detection results of the pipe position detection mechanism, the air leakage detection mechanism and the wind speed detection mechanism. The indicating mechanism includes a non-hole-entry indicator light 61, an air leakage indicator light 62 and a non-air outlet indicator light 63 arranged in the detection tube 2. The non-hole-entry indicator light 61, the air leakage indicator light 62 and the non-air outlet indicator light 63 can respectively generate a light beam that vertically penetrates the hole 71 to be measured upward, and the light beam generated by the non-air outlet indicator light 63 is coaxial with the detection tube 2 (or the standard hole). In this embodiment, preferably, the non-hole-entry indicator light 61, the air leakage indicator light 62 and the non-air outlet indicator light 63 generate light beams of different colors respectively. The installation and fixing methods of the non-hole-entry indicator light 61, the air leakage indicator light 62 and the non-air outlet indicator light 63 are not limited.

[0101] The non-entry-into-hole indicator light 61 is associated with the pipe position detection mechanism; when the pipe position detection mechanism detects that the detection tube 2 is not inserted into the hole to be tested 71, the non-entry-into-hole indicator light 61 lights up; when the pipe position detection mechanism detects that the detection tube 2 is inserted into the hole to be tested 71, the non-entry-into-hole indicator light 61 goes out.

[0102] The air leakage indicator light 62 is associated with the air leakage detection mechanism; when the air leakage detection mechanism detects air leakage between the detection tube 2 and the hole to be tested 71, the air leakage indicator light 62 lights up; when the air leakage detection mechanism detects no air leakage between the detection tube 2 and the hole to be tested 71, the air leakage indicator light 62 goes out.

[0103] The no-air indicator light 63 is associated with the wind speed detection mechanism; when the wind speed detection mechanism detects that there is no wind flowing in the detection tube 2, the no-air indicator light 63 lights up; when the wind speed detection mechanism detects that there is wind flowing in the detection tube 2, the no-air indicator light 63 goes out.

[0104] The hole shape and position measuring device may also include a plurality of sensor components (not shown in the figure) arranged above the substrate 1, each sensor component corresponding to a standard hole; each sensor component includes three sensors, and the three sensors are respectively used to detect light beams of different colors generated by the non-entry indicator light 61, the air leakage indicator light 62 and the non-exit indicator light 63. The sensor component can be connected to a computer, and after the computer analyzes the data fed back by each sensor in the sensor component, the detection result corresponding to the hole to be measured 71 is obtained, and the detection result can be recorded in the corresponding system and intuitively displayed on the screen.

[0105] The association of the non-entering-the-hole indicator light 61 with the pipe position detection mechanism is achieved in the following manner: the pipe position detection mechanism includes a non-entering-the-hole button 31 electrically connected to the non-entering-the-hole indicator light 61; the non-entering-the-hole button 31 is arranged below the detection tube 2, and the two cooperate with each other through contact and separation to turn the non-entering-the-hole indicator light 61 on and off. Specifically: when the detection tube 2 contacts the non-entering-the-hole button 31, the non-entering-the-hole button 31 is closed due to the downward pressure of the detection tube 2, and the non-entering-the-hole indicator light 61 is turned on; when the detection tube 2 is separated from the non-entering-the-hole button 31, the non-entering-the-hole button 31 is automatically disconnected, and the non-entering-the-hole indicator light 61 is turned off.

[0106] The air leakage indicator light 62 is associated with the air leakage detection mechanism in the following manner: the air leakage detection mechanism includes a first annular cover 41 , a pneumatic plate 42 , a pneumatic rod 43 , a sealing baffle ring 44 , a first compression spring 45 and an air leakage button 46 .

[0107] The first annular cover 41 is coaxially arranged on the upper outer wall of the detection tube 2. The top of the first annular cover 41 is open and can be in sealing contact with the lower side of the test piece 7. The first annular cover 41 has a first storage cavity 411 inside, and the bottom wall of the first annular cover 41 has an air hole 412.

[0108] The pneumatic plate 42 is disposed in the first storage cavity 411 , a gap is left between the side wall of the pneumatic plate 42 and the side wall of the first storage cavity 411 , and the shape of the pneumatic plate 42 is adapted to the shape of the first storage cavity 411 .

[0109] One end of the pneumatic rod 43 is connected to the lower side of the pneumatic plate 42 , and the other end is connected to the bottom of the first annular cover 41 in a longitudinal sliding manner.

[0110] The sealing ring 44 is disposed on the side wall of the first storage cavity 411 and is located above the pneumatic plate 42 .

[0111] The first compression spring 45 is sleeved on the pneumatic rod 43 and is used to make the upper side of the pneumatic plate 42 contact with the sealing ring 44 .

[0112] The air leakage button 46 is disposed on the side wall of the first storage cavity 411 and is located below the pneumatic plate 42 ; the air leakage button 46 is electrically connected to the air leakage indicator light 62 .

[0113] When air leaks between the detection tube 2 and the hole 71 to be measured, the leaked wind blows toward the upper side of the pneumatic plate 42, pushing the pneumatic plate 42 downward, and the pneumatic plate 42 moves downward to close the air leakage button 46 to light up the air leakage indicator light 62; when there is no air leakage between the detection tube 2 and the hole 71 to be measured, the pneumatic plate 42 moves upward under the action of the restoring force of the first compression spring 45 and contacts the sealing baffle ring 44, the air leakage button 46 is automatically disconnected, and the air leakage indicator light 62 is extinguished.

[0114] The no-air indicator light 63 is associated with the wind speed detection mechanism in the following manner: the wind speed detection mechanism includes a second annular cover 51 , a first movable plug 52 , a second movable plug 53 , a no-air button 54 , a second compression spring 55 and a duct 56 .

[0115] The second annular cover 51 is coaxially arranged on the upper outer wall of the detection tube 2, and the first annular cover 41 is located between the second annular cover 51 and the detection tube 2; the top of the second annular cover 51 is open and can be sealed and contacted with the lower side of the test piece 7; the second annular cover 51 has a second storage cavity 511.

[0116] The side wall of the first movable plug 52 is longitudinally slidably sealed with the side wall of the second storage cavity 511, and the shape of the first movable plug 52 is adapted to the shape of the second storage cavity 511. The upper side of the first movable plug 52, the side wall of the second storage cavity 511 and the lower side of the test piece 7 can be enclosed together to form a closed space 57.

[0117] The second movable plug 53 is arranged below the first movable plug 52, and the side wall of the second movable plug 53 is longitudinally slidably sealed with the side wall of the second storage cavity 511, and the shape of the second movable plug 53 is adapted to the shape of the second storage cavity 511; the upper side of the second movable plug 53 is connected to a push rod 531, and the push rod 531 slides and seals through the first movable plug 52; the second movable plug 53 has a through hole 532.

[0118] The no-air button 54 is disposed on the side wall of the second storage cavity 511 and is located above the first movable stopper 52 . The upper end of the push rod 531 can contact or separate from the no-air button 54 .

[0119] One end of the second compression spring 55 is connected to the second movable plug 53 , and the other end is connected to the second storage cavity 511 , so as to make the upper end of the push rod 531 contact with the no-air outlet button 54 .

[0120] One end of the conduit 56 is connected to the detection tube 2 , and the other end is connected to the lower part of the second storage cavity 511 .

[0121] When there is no wind flowing at a predetermined velocity in the detection tube 2, under the upward force of the second compression spring 55, the top rod 531 on the second movable plug 53 contacts the no-air button 54, the no-air button 54 is squeezed and closed, and the no-air indicator 63 lights up. When there is wind flowing at a predetermined velocity in the detection tube 2, negative pressure is formed in the conduit 56, and the gas in the lower part of the second storage cavity 511 can flow through the conduit 56 and be sucked into the detection tube 2. The second movable plug 53 moves downward due to the downward suction force, so that the top rod 531 is separated from the no-air button 54, the no-air button 54 is disconnected, and the no-air indicator 63 is turned off.

[0122] In addition, due to the existence of the through hole 532, the first movable plug 52 will also be subjected to a downward suction force, and the first movable plug 52 tends to move downward, thereby generating a negative pressure in the enclosed space 57 formed by the upper side of the first movable plug 52, the side wall of the second storage cavity 511 and the lower side of the test piece 7, and generating an adsorption force on the lower side of the test piece 7. On the one hand, this helps to prevent the test piece 7 from moving in a direction parallel to the substrate 1 during the detection process. On the other hand, there are usually a plurality of test holes 71 regularly distributed on the test piece 7, and there are correspondingly a plurality of wind speed detection mechanisms. The distribution positions of these wind speed detection mechanisms correspond to the test holes 71, and they can play an adsorption role on multiple positions of the test piece 7, so as to better fix the test piece 7, thereby preventing the test piece 7 from being warped or deformed at a certain position due to local force on the test piece 7, which causes distortion of the detection result and large errors.

[0123] In some cases, multiple evenly distributed wind speed detection mechanisms can also cooperate with the leveling device to level the thinner test piece 7, thereby improving the accuracy of the test results. For example: the leveling device is a pressure plate that is movably arranged above the test piece 7 and is offset from the wind source; when the leveling device is working, the pressure plate presses down on a part of the test piece 7 to level the test piece 7, and then the wind source works to absorb the test piece 7 through the wind speed detection mechanism, so that after the pressure plate is removed, the test piece 7 can still remain flat. The purpose of removing the pressure plate is to prevent the pressure plate and its supporting driving equipment from affecting the propagation path of the light beams generated by the non-entry indicator light 61, the air leakage indicator light 62 and the non-air outlet indicator light 63 during the subsequent detection process.

[0124] Second, see Figure 1~Figure 3 This embodiment provides a hole shape and position measurement method suitable for detecting an opaque test piece 7, and the hole shape and position measurement method utilizes the above-mentioned hole shape and position measurement device. The hole shape and position measurement method comprises the following steps:

[0125] Step S1, place the test piece 7 on the substrate 1; light up the no-air indicator light 63 to generate a vertical upward light beam; adjust the position of the test piece 7 so that the light beams generated by at least three (preferably five) no-air indicator lights 63 are coaxial with at least three test holes 71 respectively.

[0126] Step S2, leveling the test piece 7; starting the air source.

[0127] Step S3, using the pipe position detection mechanism to measure whether the detection pipe 2 is inserted into the hole to be tested 71, using the air leakage detection mechanism to measure whether there is air leakage between the detection pipe 2 and the hole to be tested 71, and using the wind speed detection mechanism to measure whether there is wind flowing in the detection pipe 2; based on the detection results of the pipe position detection mechanism, the air leakage detection mechanism and the wind speed detection mechanism, it is determined whether the hole to be tested 71 belongs to the following situations:

[0128] Pass: The non-entry indicator light 61 is off (the detection tube 2 is inserted into the hole to be tested 71), the air leakage indicator light 62 is off (there is no air leakage between the detection tube 2 and the hole to be tested 71), and the non-air outlet indicator light 63 is off (there is air flowing in the detection tube 2);

[0129] Large hole: the non-entry indicator light 61 is off (the detection tube 2 is inserted into the hole to be tested 71), the air leakage indicator light 62 is on (there is air leakage between the detection tube 2 and the hole to be tested 71), and the non-air outlet indicator light 63 is off (there is air flowing in the detection tube 2);

[0130] Small hole: the non-entry indicator light 61 is on (the detection tube 2 is not inserted into the hole to be tested 71), the air leakage indicator light 62 is off (there is no air leakage between the detection tube 2 and the hole to be tested 71), and the non-air outlet indicator light 63 is off (there is air flowing in the detection tube 2);

[0131] Offset hole: the non-entry indicator light 61 is on (the detection tube 2 is not inserted into the hole to be tested 71), the air leakage indicator light 62 is on (air leakage between the detection tube 2 and the hole to be tested 71), and the non-air outlet indicator light 63 is off (air is flowing in the detection tube 2);

[0132] Leakage: The light beam generated by the air outlet indicator 63 is not detected or observed above the test piece 7.

[0133] Step S4, turn off the air source and take away the test piece 7; according to the condition of the test hole 71, determine whether to scrap the corresponding test piece 7 or to rework and repair it.

[0134] Step S5, repeat steps S1 to S4 to detect other test pieces 7.

[0135] Thirdly, see Figure 1~Figure 3 This embodiment provides a hole shape and position measurement method suitable for detecting a transparent test piece 7, and the hole shape and position measurement method utilizes the above-mentioned hole shape and position measurement device. The hole shape and position measurement method comprises the following steps:

[0136] Step S1, placing the test piece 7 on the substrate 1; turning on the no-air indicator light 63 to generate a vertical upward light beam; adjusting the position of the test piece 7 so that the light beams generated by at least three no-air indicator lights 63 are coaxial with at least three test holes 71 respectively.

[0137] Step S2, leveling the test piece 7; starting the air source.

[0138] Step S3, using the pipe position detection mechanism to measure whether the detection pipe 2 is inserted into the hole to be tested 71, using the air leakage detection mechanism to measure whether there is air leakage between the detection pipe 2 and the hole to be tested 71, and using the wind speed detection mechanism to measure whether there is wind flowing in the detection pipe 2; based on the detection results of the pipe position detection mechanism, the air leakage detection mechanism and the wind speed detection mechanism, it is determined whether the hole to be tested 71 belongs to the following situations:

[0139] Pass: The non-entry indicator light 61 is off (the detection tube 2 is inserted into the hole to be tested 71), the air leakage indicator light 62 is off (there is no air leakage between the detection tube 2 and the hole to be tested 71), and the non-air outlet indicator light 63 is off (there is air flowing in the detection tube 2);

[0140] Large hole: the non-entry indicator light 61 is off (the detection tube 2 is inserted into the hole to be tested 71), the air leakage indicator light 62 is on (there is air leakage between the detection tube 2 and the hole to be tested 71), and the non-air outlet indicator light 63 is off (there is air flowing in the detection tube 2);

[0141] Small hole: the non-entry indicator light 61 is on (the detection tube 2 is not inserted into the hole to be tested 71), the air leakage indicator light 62 is off (there is no air leakage between the detection tube 2 and the hole to be tested 71), and the non-air outlet indicator light 63 is off (there is air flowing in the detection tube 2);

[0142] Offset hole: the non-entry indicator light 61 is on (the detection tube 2 is not inserted into the hole to be tested 71), the air leakage indicator light 62 is on (air leakage between the detection tube 2 and the hole to be tested 71), and the non-air outlet indicator light 63 is off (air is flowing in the detection tube 2);

[0143] Leakage: Detect or observe that the no-air indicator light 63 lights up above the test piece 7 (no air flows in the test tube 2).

[0144] Step S4, turn off the air source and take away the test piece 7; according to the condition of the test hole 71, determine whether to scrap the corresponding test piece 7 or to rework and repair it.

[0145] Step S5, repeat steps S1 to S4 to detect other test pieces 7.

[0146] In combination with the above content, this application has at least the following beneficial effects:

[0147] 1. Use the test tube 2 as a reference (the outer diameter of the test tube 2 matches the standard aperture), and use the tube position detection mechanism, air leakage detection mechanism and wind speed detection mechanism to measure the difference between the shape and position of the test hole 71 on the test piece 7 and the standard hole, so as to know whether the test hole 71 is qualified or unqualified (defective); when the test hole 71 is unqualified, it can also be known what kind of defect it is, so as to determine whether the corresponding test piece 7 will be scrapped (large hole, biased hole) or reworked (small hole, leaking hole). Compared with the method of using ultraviolet light and color-changing materials for combined detection, this embodiment does not have to wait for the color-changing material to recover or replace the color-changing material during batch detection, and the efficiency of batch detection is higher.

[0148] 2. The non-entry indicator light 61 is associated with the pipe position detection mechanism, the air leakage indicator light 62 is associated with the air leakage detection mechanism, and the non-air outlet indicator light 63 is associated with the wind speed detection mechanism, so as to reflect the situation of the hole 71 to be tested.

[0149] 3. The hole shape and position measuring device may also include a plurality of sensor components arranged above the substrate 1, each sensor component corresponding to a standard hole; each sensor component includes three sensors, and the three sensors are used to detect light beams of different colors generated by the non-entry indicator light 61, the air leakage indicator light 62 and the non-exit indicator light 63. The sensor component can be connected to a computer, and after the computer analyzes the data fed back by each sensor in the sensor component, the detection result corresponding to the hole to be measured 71 is obtained, and the detection result is subsequently recorded in the corresponding system and intuitively displayed on the screen. In this way, it is helpful to realize the automation of the detection process.

[0150] 4. The turning off and on of the no-air indicator light 63 is related to the wind speed in the detection tube 2, and the wind speed in the detection tube 2 is related to the wind source. The wind source can detect not only large hole and small hole defects, but also leakage hole defects.

[0151] 5. Due to the existence of the through hole 532, the first movable plug 52 will also be subjected to a downward suction force, and the first movable plug 52 tends to move downward, thereby generating a negative pressure in the enclosed space 57 formed by the upper side of the first movable plug 52, the side wall of the second storage cavity 511 and the lower side of the test piece 7, and generating an adsorption force on the lower side of the test piece 7. On the one hand, this helps to prevent the test piece 7 from moving in a direction parallel to the substrate 1 during the detection process. On the other hand, there are usually a plurality of test holes 71 regularly distributed on the test piece 7, and there are correspondingly a plurality of wind speed detection mechanisms. The distribution positions of these wind speed detection mechanisms correspond to the test holes 71, and they can play an adsorption role on multiple positions of the test piece 7 to better fix the test piece 7, thereby preventing the test piece 7 from being warped or deformed at a certain position due to local force on the test piece 7, which causes distortion of the detection result and large errors.

[0152] In some cases, multiple evenly distributed wind speed detection mechanisms can also cooperate with the leveling device to level the thinner test piece 7, thereby improving the accuracy of the test result. For example, the leveling device is a pressure plate that is movably arranged above the test piece 7 and is offset from the wind source. The pressure plate presses down on a part of the test piece 7. During this process, the wind source works to absorb the test piece 7 through the wind speed detection mechanism, so that after the pressure plate is removed, the test piece 7 can still remain flat. The purpose of removing the pressure plate is to prevent the pressure plate and its supporting driving device from affecting the propagation path of the light beams generated by the non-entry indicator light 61, the air leakage indicator light 62 and the non-air outlet indicator light 63 during the subsequent testing process.

[0153] 6. It can be seen from the above two methods that the present application can detect not only opaque test pieces 7 (such as metal sheet metal parts), but also transparent test pieces 7 (such as transparent plastic plates), and has a wider scope of application.

[0154] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. In the absence of conflicts, the embodiments of the present application and the features in the embodiments may be arbitrarily combined with each other. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hole shape and position measuring device, characterized in that: include: A substrate for placing the test piece has avoidance holes, the avoidance holes correspond to the standard holes one by one, and the diameter of the avoidance holes is larger than the diameter of the standard holes; A wind source disposed above the substrate, used to generate wind blowing toward the avoidance hole; The detection tube disposed below the substrate can vertically penetrate the avoidance hole; the outer wall of the detection tube can be in sliding and sealing contact with the inner wall of the standard hole, or the top of the detection tube can be in sealing contact with the lower side of the test piece; A tube position detection mechanism, used to measure whether the detection tube is inserted into the hole to be detected; An air leakage detection mechanism, used to measure whether there is air leakage between the detection tube and the hole to be detected; A wind speed detection mechanism, used to measure whether there is wind flowing in the detection tube; The hole shape and position measuring device also includes: A support plate is arranged below the base plate, and the detection tube slides longitudinally through the support plate; A spring, used to enable the detection tube to move upward and reset after moving downward; The hole shape and position measuring device further comprises an indicating mechanism, which is used to indicate the condition of the hole to be measured according to the detection results of the pipe position detection mechanism, the air leakage detection mechanism and the wind speed detection mechanism; The indicating mechanism comprises a non-hole-entry indicator light, an air leakage indicator light and a non-air-outlet indicator light arranged in the detection tube, wherein the non-hole-entry indicator light, the air leakage indicator light and the non-air-outlet indicator light can respectively generate a light beam vertically upwardly penetrating the hole to be detected, and the light beam generated by the non-air-outlet indicator light is coaxial with the detection tube; The non-entry-into-hole indicator light is associated with the pipe position detection mechanism; The air leakage indicator light is associated with the air leakage detection mechanism; The no-wind indicator light is associated with the wind speed detection mechanism; The pipe position detection mechanism includes a non-hole-entering button electrically connected to the non-hole-entering indicator light; the non-hole-entering button is arranged below the detection pipe, and the two can contact or separate from each other; The air leakage detection mechanism comprises: A first annular cover is arranged on the upper outer wall of the detection tube, the top of the first annular cover is open and can be in sealing contact with the lower side of the object to be detected; the first annular cover has a first placement cavity inside, and the bottom wall of the first annular cover has an air hole connected with the first placement cavity; A pneumatic plate is arranged in the first storage cavity, and a gap is left between the side wall of the pneumatic plate and the side wall of the first storage cavity; A pneumatic rod, one end of which is connected to the lower side of the pneumatic plate, and the other end of which is longitudinally slidably connected to the bottom of the first annular cover; A sealing baffle ring, arranged on the side wall of the first storage cavity and located above the pneumatic plate; A first compression spring, used to make the upper side of the pneumatic plate contact the sealing ring; An air leakage button is arranged on the side wall of the first storage cavity and is located below the pneumatic plate; the air leakage button is electrically connected to the air leakage indicator light; The wind speed detection mechanism comprises: A second annular cover is arranged on the upper outer wall of the detection tube, the first annular cover is located between the second annular cover and the detection tube; the top of the second annular cover is open and can be in sealing contact with the lower side of the object to be detected; the second annular cover has a second storage cavity; A first movable stopper, whose side wall is longitudinally slidably sealed with the upper side wall of the second storage cavity; the upper side of the first movable stopper, the upper side wall of the second storage cavity and the lower side of the test piece can be enclosed together to form a closed space; A second movable stopper is arranged below the first movable stopper, and the side wall of the second movable stopper is longitudinally slidably sealed with the upper side wall of the second storage cavity; a push rod is connected to the upper side of the second movable stopper, and the push rod slides and seals through the first movable stopper; the second movable stopper has a through hole; A non-air outlet button is arranged on the upper side wall of the second storage cavity and is located above the first movable plug, and the upper end of the push rod can contact or separate from the non-air outlet button; a second compression spring, used to make the upper end of the push rod contact the non-air outlet button; A catheter, one end of which is connected to the detection tube and the other end of which is connected to the lower part of the second storage cavity; According to the test results of the above-mentioned pipe position detection mechanism, air leakage detection mechanism and wind speed detection mechanism, it can be reflected that the hole to be tested belongs to the following situations: Pass: The detection tube is inserted into the hole to be tested, there is no air leakage between the detection tube and the hole to be tested, and there is air flowing in the detection tube; Large hole: The detection tube is inserted into the hole to be tested, there is air leakage between the detection tube and the hole to be tested, and there is air flowing in the detection tube; Small hole: The detection tube is not inserted into the hole to be tested, there is no air leakage between the detection tube and the hole to be tested, and there is air flowing in the detection tube; Offset hole: The detection tube is not inserted into the hole to be tested, there is air leakage between the detection tube and the hole to be tested, and there is air flowing in the detection tube; Leakage hole: There is no air flow in the test tube; or, the test tube is not inserted into the hole to be tested, and there is no air flow in the test tube.

2. The hole shape and position measuring device according to claim 1, characterized in that: The hole shape and position measuring device also includes a plurality of sensor components arranged above the substrate, each of which corresponds to a standard hole; each of the sensor components includes three sensors, and the three sensors are respectively used to detect light beams of different colors generated by the non-hole entry indicator light, the air leakage indicator light and the non-air outlet indicator light.

3. A hole shape and position measuring method based on the hole shape and position measuring device according to claim 1 or 2, suitable for detecting opaque test pieces, characterized in that: include: Step S1, placing the test piece on the substrate; The no-air indicator light is lit to produce a vertical upward light beam; Adjust the position of the object to be tested so that the light beams generated by at least three of the no-air-outlet indicator lights are coaxial with at least three holes to be tested; Step S2, leveling the test piece; starting the wind source; Step S3, measuring whether the detection tube is inserted into the hole to be measured by the tube position detection mechanism, measuring whether there is air leakage between the detection tube and the hole to be measured by the air leakage detection mechanism, and measuring whether there is wind flowing in the detection tube by the wind speed detection mechanism; based on the detection results of the tube position detection mechanism, the air leakage detection mechanism and the wind speed detection mechanism, it is determined whether the hole to be measured belongs to the following situations: Pass: The indicator light of "No hole entry" goes out, indicating that the detection tube is inserted into the hole to be tested; the indicator light of "Air leakage" goes out, indicating that there is no air leakage between the detection tube and the hole to be tested; and the indicator light of "No air outlet" goes out, indicating that there is air flowing in the detection tube; Large hole: The indicator light of "No hole entry" is off, indicating that the detection tube is inserted into the hole to be tested; the indicator light of "Air leakage" is on, indicating that there is air leakage between the detection tube and the hole to be tested; and the indicator light of "No air outlet" is off, indicating that there is air flowing in the detection tube; Small hole: The indicator light of "No hole entry" is on, indicating that the detection tube is not inserted into the hole to be tested; the indicator light of "Air leakage" is off, indicating that there is no air leakage between the detection tube and the hole to be tested; and the indicator light of "No air outlet" is off, indicating that there is air flowing in the detection tube; Offset hole: The non-entry indicator lights up, indicating that the detection tube is not inserted into the hole to be tested; the air leakage indicator lights up, indicating that there is air leakage between the detection tube and the hole to be tested; and the non-air outlet indicator is off, indicating that there is air flowing in the detection tube; Leakage: No light beam generated by the air outlet indicator light is detected or observed above the test piece; Step S4, turning off the wind source and taking away the test piece; determining whether to scrap the corresponding test piece or rework and repair it according to the condition of the hole to be tested; Step S5: repeat steps S1 to S4 to detect other test pieces.

4. A hole shape and position measuring method based on the hole shape and position measuring device according to claim 1 or 2, suitable for detecting transparent test pieces, characterized in that: include: Step S1, placing the test piece on the substrate; The no-air indicator light is lit to produce a vertical upward light beam; Adjust the position of the object to be tested so that the light beams generated by at least three of the no-air-outlet indicator lights are coaxial with at least three holes to be tested; Step S2, leveling the test piece; starting the wind source; Step S3, measuring whether the detection tube is inserted into the hole to be measured by the tube position detection mechanism, measuring whether there is air leakage between the detection tube and the hole to be measured by the air leakage detection mechanism, and measuring whether there is wind flowing in the detection tube by the wind speed detection mechanism; based on the detection results of the tube position detection mechanism, the air leakage detection mechanism and the wind speed detection mechanism, it is determined whether the hole to be measured belongs to the following situations: Pass: The indicator light of "No hole entry" goes out, indicating that the detection tube is inserted into the hole to be tested; the indicator light of "Air leakage" goes out, indicating that there is no air leakage between the detection tube and the hole to be tested; and the indicator light of "No air outlet" goes out, indicating that there is air flowing in the detection tube; Large hole: The indicator light of "No hole entry" is off, indicating that the detection tube is inserted into the hole to be tested; the indicator light of "Air leakage" is on, indicating that there is air leakage between the detection tube and the hole to be tested; and the indicator light of "No air outlet" is off, indicating that there is air flowing in the detection tube; Small hole: The indicator light of "No hole entry" is on, indicating that the detection tube is not inserted into the hole to be tested; the indicator light of "Air leakage" is off, indicating that there is no air leakage between the detection tube and the hole to be tested; and the indicator light of "No air outlet" is off, indicating that there is air flowing in the detection tube; Offset hole: The non-entry indicator lights up, indicating that the detection tube is not inserted into the hole to be tested; the air leakage indicator lights up, indicating that there is air leakage between the detection tube and the hole to be tested; and the non-air outlet indicator is off, indicating that there is air flowing in the detection tube; Leakage: Detect above the test piece or observe that the no-air indicator lights up, indicating that there is no air flow in the test tube; Step S4, turn off the air source and take away the test piece; determine whether to scrap the corresponding test piece or rework and repair it according to the condition of the hole to be tested; Step S5: repeat steps S1 to S4 to detect other test pieces.

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