Air tube assembly measuring device and measuring method

Abstract

The application discloses an air pipe assembly measuring device and a measuring method. The air pipe assembly measuring device comprises a positioning block, a fixing assembly, a core rod, a first measuring block and a second measuring block. The positioning block comprises a mounting part and an auxiliary measuring part. The auxiliary measuring part comprises a measuring slope and a measuring vertical surface for measuring the air pipe assembly. The included angle between the measuring slope and the measuring vertical surface is β. The fixing assembly is arranged on the mounting part and is used for mounting a main pipe body, so that the main pipe body is arranged vertically. The core rod comprises an embedding part and a detection part. The embedding part is used for embedding into a connecting section and makes the outer circle of the detection part coaxial with the central axis of the connecting section. The first measuring block is provided with a first end stop protrusion. The first measuring block is used for moving along the measuring slope, and then the first size is detected through the cooperation between the first end stop protrusion and the detection part. The second measuring block is provided with a second end stop protrusion. The second measuring block is used for moving along the measuring vertical surface, and then the second size is detected through the cooperation between the second end stop protrusion and the open end of the adapter section.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of measuring tooling, in particular, to an air pipe assembly measuring device. In addition, the present application also relates to a measuring method comprising the air pipe assembly measuring device. BACKGROUND

[0002] As shown in the air pipe assembly 100, the part is welded by argon arc welding, and the air pipe and the adapter section 102 are welded together. In the process of processing, the length distance of the adapter section 102 axis to the air pipe axis and the transverse distance of the air pipe axis to the opening edge of the adapter section 102 need to be measured to determine whether the above distance meets the design requirements and ensure accurate assembly during subsequent installation. Figure 1 As shown in the air pipe assembly 100, the part is welded by argon arc welding, and the air pipe and the adapter section 102 are welded together. In the process of processing, the length distance of the adapter section 102 axis to the air pipe axis and the transverse distance of the air pipe axis to the opening edge of the adapter section 102 need to be measured to determine whether the above distance meets the design requirements and ensure accurate assembly during subsequent installation.

[0003] Figure 1 As shown in the air pipe assembly 100, the part is welded by argon arc welding, and the air pipe and the adapter section 102 are welded together. In the process of processing, the length distance of the adapter section 102 axis to the air pipe axis and the transverse distance of the air pipe axis to the opening edge of the adapter section 102 need to be measured to determine whether the above distance meets the design requirements and ensure accurate assembly during subsequent installation. SUMMARY

[0004] The present application provides an air pipe assembly measuring device and a measuring method to solve the technical problem of how to measure the space size of the air pipe assembly.

[0005] ​According to one aspect of the present application, there is provided an air pipe assembly measuring device for measuring spatial dimensions of an air pipe assembly, the air pipe assembly comprising a main pipe body and a connecting segment, an intersection angle between a central axis of the main pipe body and a central axis of the connecting segment being β, the spatial dimensions comprising a first dimension and a second dimension, the first dimension being a length distance from the central axis of the connecting segment to an intersection point of the central axis of the main pipe body and an open end of the main pipe body, the second dimension being a distance from the open end of the connecting segment to the central axis of the main pipe body, the air pipe assembly measuring device comprising a positioning block, a fixing assembly, a core rod, a first gauge block and a second gauge block, the positioning block comprising a mounting portion and an auxiliary measuring portion connected to the mounting portion, the auxiliary measuring portion comprising an upwardly arranged measuring slope and a measuring vertical surface arranged towards the mounting portion, an intersection angle between the measuring slope and the measuring vertical surface being equal to β; the fixing assembly being arranged on the mounting portion and being used for mounting the main pipe body in a vertical direction; the core rod comprising an embedding portion and a detecting portion, the embedding portion being used for embedding into the connecting segment and coaxially arranging the detecting portion with the central axis of the connecting segment; the first gauge block being provided with a first end stop protrusion, the first gauge block being used for moving along the measuring slope and detecting the first dimension by cooperation of the first end stop protrusion with the detecting portion; the second gauge block being provided with a second end stop protrusion, the second gauge block being used for moving along the measuring vertical surface and detecting the second dimension by cooperation of the second end stop protrusion with the open end of the connecting segment.

[0006] Further, the fixing assembly comprises a fixing block and a pressing plate, the fixing block being detachably mounted on the mounting portion, a V-shaped groove extending in the vertical direction being formed in the fixing block, the pressing plate being detachably mounted on the fixing block and located at an opening side of the V-shaped groove, the pressing plate being used for tightly pressing and fixing the main pipe body in the V-shaped groove.

[0007] Further, the pressing plate is detachably mounted on the fixing block by a stepped screw.

[0008] Further, the first gauge block comprises a first abutting block, a connecting block and a first measuring block, the first abutting block being used for abutting against and sliding along the measuring slope, two ends of the connecting block being respectively connected with the first abutting block and the first measuring block and making an abutting surface of the first abutting block parallel to an inspection surface of the first measuring block, the first end stop protrusion being arranged on the inspection surface of the first measuring block, the inspection surface of the first measuring block being used for defining a maximum value of the first dimension, the first end stop protrusion being used for defining a minimum value of the first dimension, the inspection surface of the first measuring block and the first end stop protrusion together enclosing an L-shaped clamping groove used for clamping the outer circle of the detecting portion when the first dimension is in a preset range.

[0009] Further, a notch is formed at the intersection of the first end protrusion and the detection surface of the first measuring block, and the notch is located on the side of the first end protrusion close to the detection part.

[0010] Further, the second measuring block comprises a second abutting block and a second measuring block, the second abutting block is used to abut and slide along the measuring vertical surface, the second end protrusion is located on the inspection surface of the second measuring block, the detection surface of the second measuring block is used to define the maximum value of the second size, the second end protrusion is used to define the minimum value of the first size, and the detection surface of the second measuring block and the second end protrusion together enclose an L-shaped clamping groove used to clamp the outer circle of the open end of the adapter segment when the first size is in the preset range.

[0011] Further, a sliding groove is formed on the measuring vertical surface in the height direction of the measuring vertical surface, and a sliding block is arranged on the second abutting block to cooperate with the sliding groove.

[0012] According to another aspect of the present application, a measuring method of an air pipe assembly is also provided, which is measured by the air pipe assembly measuring device described above, and comprises the following steps:

[0013] S100: fixing the main pipe body of the air pipe assembly on the fixing assembly, vertically arranging the body pipe, and making the open end of the adapter segment face the measuring vertical surface and parallel to the measuring vertical surface;

[0014] S200: selecting the first measuring block to move along the measuring inclined surface, detecting whether the first size is qualified by the cooperation state of the first end protrusion and the outer circle of the detection part, if not, repairing the air pipe assembly, and if qualified, checking the second size;

[0015] S300: selecting the second measuring block to move along the measuring vertical surface, detecting whether the second size is qualified by the cooperation state of the second end protrusion and the outer circle of the detection part, if not, repairing the air pipe assembly, and if qualified, checking the subsequent air pipe assembly.

[0016] Further, in the step S200, if the top of the outer circle of the detection part can pass through the detection surface of the first measuring block but cannot pass through the first end protrusion, it is determined that the first size is qualified, and if the top of the outer circle of the detection part can pass through the first end protrusion or the top of the outer circle of the detection part cannot pass through the detection surface of the first measuring block, it is determined that the first size is unqualified.

[0017] Further, in the step S300, the second measuring block is moved along the measuring slope, if the end face of the open end of the adapter section can pass through the detection face of the second measuring block but cannot pass through the second end protrusion, it is determined that the second size is qualified, if the end face of the open end of the adapter section can pass through the first end protrusion or the end face of the open end of the adapter section cannot pass through the detection face of the second measuring block, it is determined that the second size is unqualified.

[0018] The present application has the following advantages:

[0019] In the air pipe assembly measuring device, the air pipe assembly is fixed by the cooperation of the positioning block and the fixing assembly, the main pipe body is vertically arranged, the open end of the adapter section is parallel to the measuring vertical surface, then the embedding part of the core rod is embedded into the connecting section, and the measuring part is extended out, at this time, the measuring part is coaxial with the connecting section, the setting of the measuring part converts the virtual reference line of the original central axis of the connecting section into the entity line of the outer circle of the measuring part, from virtual to entity, and further facilitates the measurement of the first size by the measuring part.

[0020] In the specific implementation, since the first size is the length distance of the intersection point of the central axis of the connecting section to the central axis of the main pipe body to the open end of the main pipe body, in the measurement, the first measuring block is moved along the measuring slope, at this time, the distance from the detection face of the first measuring block to the measuring slope plus the length distance from the measuring slope to the intersection point of the central axis of the main pipe body to the open end of the main pipe body plus the radius of the measuring part is the maximum value within the tolerance of the first size plus the radius of the measuring part, the distance from the first end protrusion to the measuring slope plus the length distance from the measuring slope to the intersection point of the central axis of the main pipe body to the open end of the main pipe body plus the radius of the measuring part is the minimum value within the tolerance of the first size plus the radius of the measuring part, so if the top of the detection part outer circle can pass through the detection face of the first measuring block but cannot pass through the first end protrusion, it is determined that the first size is qualified, if the top of the detection part outer circle can pass through the first end protrusion, it is determined that the first size is unqualified.

[0021] In the measurement of the second size, since the second size is the distance from the open end of the adapter section to the central axis of the main pipe body, in the measurement, the second measuring block is moved along the measuring vertical surface, since the distance from the central axis of the main pipe body to the measuring vertical surface is a constant value after the air pipe assembly is fixed, and the second size is also a constant value, the maximum value of the tolerance of the second size at this time is the distance from the central axis of the main pipe body to the measuring vertical surface minus the distance from the detection face of the second measuring block to the measuring vertical surface, and the minimum value of the second size is the distance from the central axis of the main pipe body to the measuring vertical surface minus the distance from the second end protrusion to the measuring vertical surface, so if the end face of the open end of the adapter section can pass through the detection face of the second measuring block but cannot pass through the second end protrusion, it is determined that the second size is qualified, if the end face of the open end of the adapter section can pass through the first end protrusion, it is determined that the second size is unqualified.

[0022] In summary, the first size and the second size are checked by the cooperation of the components of the air pipe assembly measuring device, the problems of difficult to find measurement reference and inaccurate measurement of three coordinate measurement are solved in the process, the measurement can be made from virtual to real during measurement, and the measurement method is simplified. Moreover, the device can be used for intuitive judgment during detection, greatly saving the measurement resources, simple operation, and greatly improving the measurement efficiency.

[0023] In addition to the purposes, features and advantages described above, the present application has other purposes, features and advantages. The present application will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, illustrate embodiments of the application and aid in explaining the application. In the drawings:

[0025] Figure 1 is a structural schematic view of the air pipe assembly;

[0026] Figure 2 is a structural schematic view of detection of the first gauge block of the air pipe assembly measuring device of the preferred embodiment of the present application;

[0027] Figure 3 is a structural schematic view of detection of the second gauge block of the air pipe assembly measuring device of the preferred embodiment of the present application;

[0028] Figure 4 is a structural schematic view of detection of the first size of the air pipe assembly measuring device of the preferred embodiment of the present application;

[0029] Figure 5 is a structural schematic view of detection of the first size of the air pipe assembly measuring device of the preferred embodiment of the present application;

[0030] Figure 6 is a structural schematic view of detection of the second size of the air pipe assembly measuring device of the preferred embodiment of the present application;

[0031] Figure 7 is a structural schematic view of detection of the second size of the air pipe assembly measuring device of the preferred embodiment of the present application.

[0032] LEGEND KEY:

[0033] 100, air pipe assembly; 101, main pipe body; 102, adapter section;

[0034] 200, positioning block; 201, mounting portion; 202, auxiliary measurement portion; 203, measurement inclined surface; 204, measurement vertical surface;

[0035] 300, fixed block; 301, V-shaped groove; 302, pressing plate; 303, stepped screw;

[0036] 400, mandrel; 401, embedded part; 402, detection part;

[0037] 500, first measuring block; 501, first abutting block; 502, connecting block; 503, first measuring block; 504, first end stop protrusion; 505, notch;

[0038] 600, second measuring block; 601, second abutting block; 602, second measuring block; 603, second end stop protrusion. DETAILED DESCRIPTION

[0039] The embodiments of the present application will be described in detail below with reference to the accompanying drawings, but the present application can be implemented in various different ways as defined and covered by the following.

[0040] As Figures 1-7As shown, the air pipe assembly 100 measuring device of the embodiment is used for measuring the spatial size of the air pipe assembly 100, the air pipe assembly 100 comprises a main pipe body 101 and a connecting segment, the intersection of the central axis of the main pipe body 101 and the central axis of the connecting segment forms an acute angle β, the spatial size comprises a first size and a second size, the first size is the length distance from the central axis of the connecting segment 102 to the intersection of the central axis of the main pipe body 101 and the opening end of the main pipe body 101, and the second size is the distance from the opening end of the connecting segment 102 to the central axis of the main pipe body 101, the air pipe assembly 100 measuring device comprises a positioning block 200, a fixing assembly, a core rod 400, a first measuring block 500 and a second measuring block 600, the positioning block 200 comprises a mounting part 201 and an auxiliary measuring part 202 connected with the mounting part 201, the auxiliary measuring part 202 comprises an upwardly arranged measuring inclined surface 203 and a measuring vertical surface 204 arranged towards the mounting part 201, the included angle formed by the measuring inclined surface 203 and the measuring vertical surface 204 is equal to β; the fixing assembly is arranged on the mounting part 201 and is used for vertically mounting the main pipe body 101; the core rod 400 comprises an embedding part 401 and a detection part 402, the embedding part 401 is used for embedding into the connecting segment and coaxially arranging the outer circle of the detection part 402 with the central axis of the connecting segment; the first measuring block 500 is provided with a first end stop protrusion 504, the first measuring block 500 is used for moving along the measuring inclined surface 203, and the first size is detected by the cooperation of the first end stop protrusion 504 and the detection part 402; the second measuring block 600 is provided with a second end stop protrusion 603, the second measuring block 600 is used for moving along the measuring vertical surface 204, and the second size is detected by the cooperation of the second end stop protrusion 603 and the opening end of the connecting segment 102.

[0041] In the embodiment, the intersection of the central axis of the main pipe body 101 and the opening end of the main pipe body 101 is X, the first size is the distance from the point X to the central axis of the connecting segment 102, and the second size is the distance from the end face of the opening end of the connecting segment 102 to the central axis of the main pipe body 101.

[0042] Specifically, the air pipe assembly 100 is fixed by the cooperation of the positioning block 200 and the fixing assembly, the main pipe body 101 is vertically arranged, and the opening end of the connecting segment 102 is parallel to the measuring vertical surface 204, then the embedding part 401 of the core rod 400 is embedded into the connecting segment, and the measuring part is extended, at this time, the measuring part is coaxial with the connecting segment, the arrangement of the measuring part converts the virtual reference line of the central axis of the connecting segment into the entity line of the outer circle of the measuring part, from virtual to entity, and further facilitates the measurement of the first size by the measuring part.

[0043] In the embodiment, the first size is the length of the intersection of the axis of the connecting section and the axis of the main pipe body 101 to the opening end of the main pipe body 101. In the measurement, the first measuring block 503 is moved along the measuring slope 203. At this time, the distance from the inspection surface of the first measuring block 500 to the measuring slope 203 plus the length of the intersection of the measuring slope 203 and the axis of the main pipe body 101 to the opening end of the main pipe body 101 plus the radius of the measuring part is the maximum value of the first size plus the tolerance of the radius of the measuring part. The distance from the first end protrusion 504 to the measuring slope 203 plus the length of the intersection of the measuring slope 203 and the axis of the main pipe body 101 to the opening end of the main pipe body 101 plus the radius of the measuring part is the minimum value of the first size plus the tolerance of the radius of the measuring part. Therefore, if the top of the outer circle of the detection part 402 can pass the detection surface of the first measuring block 503 but cannot pass the first end protrusion 504, it is determined that the first size is qualified. If the top of the outer circle of the detection part 402 can pass the first end protrusion 504, it is determined that the first size is unqualified.

[0044] In the measurement of the second size, the second size is the distance from the opening end of the connecting section 102 to the axis of the main pipe body 101. In the measurement, the second measuring block 600 is moved along the measuring vertical surface 204. After the air pipe assembly 100 is fixed, the distance from the axis of the main pipe body 101 to the measuring vertical surface 204 is a constant value, and the second size is also a constant value. At this time, the maximum value of the tolerance of the second size is the distance from the axis of the main pipe body 101 to the measuring vertical surface 204 minus the distance from the inspection surface of the second measuring block 602 to the measuring vertical surface 204. The minimum value of the second size is the distance from the axis of the main pipe body 101 to the measuring vertical surface 204 minus the distance from the second end protrusion 603 to the measuring vertical surface 204. Therefore, if the end surface of the opening end of the connecting section 102 can pass the detection surface of the second measuring block 602 but cannot pass the second end protrusion 603, it is determined that the second size is qualified. If the end surface of the opening end of the connecting section 102 can pass the first end protrusion 504, it is determined that the second size is unqualified.

[0045] In summary, the first size and the second size are verified by the cooperation of the components of the air pipe assembly 100 measuring device. In this process, the problems of difficult to find a measurement reference and inaccurate measurement of three-coordinate measurement are solved. The measurement can be made from virtual to real in the measurement, and the measurement method is simplified. Moreover, when the device is used for detection, the judgment can be made intuitively, the measurement resources are greatly saved, the operation is simple, and the measurement efficiency is greatly improved.

[0046] Further, the fixing assembly comprises a fixing block 300 and a pressing plate 302, the fixing block 300 is detachably installed on the installation part 201, a V-shaped groove 301 extending along the vertical direction is formed on the fixing block 300, the pressing plate 302 is detachably installed on the fixing block 300 and located on the opening side of the V-shaped groove 301, and the pressing plate 302 is used for tightly fixing the main pipe body 101 in the V-shaped groove 301.

[0047] In the embodiment, the groove surfaces of the V-shaped groove 301 are symmetrically arranged, when the main pipe body 101 is arranged in the V-shaped groove 301, the dimensional tolerance of the main pipe body 101 can be eliminated under the positioning effect of the V-shaped groove 301, the central axis of the main pipe body 101 is ensured to be located in the symmetric plane of the V-shaped groove 301, thereby ensuring that the distance from the central axis of the main pipe body 101 to the measuring vertical surface 204 is always consistent, facilitating the measurement of the second dimension, and the locking of the main pipe body 101 by the pressing plate 302 is reliable, stable, fast and convenient. When the fixing assembly is installed, a plurality of threaded holes are formed on the installation part 201, and a mounting hole matched with the threaded hole is also formed on the fixing block 300, a screw is inserted into the mounting hole through the threaded hole and is threadedly connected with the mounting hole, so that the fixing block 300 is fixed on the installation part 201, the positions of the threaded holes need to be measured and then formed, so that the distance between the symmetric plane of the V-shaped groove 301 and the measuring vertical surface meets the design requirement.

[0048] Further, the pressing plate 302 is detachably installed on the fixing block 300 through a stepped screw 303. In the embodiment, the stepped screw 303 can drive the fixing block 300 to move, thereby approaching or moving away from the V-shaped groove 301, so as to facilitate the installation or removal of the main pipe body 101.

[0049] Further, the first measuring block 500 comprises a first abutting block 501, a connecting block 502 and a first measuring block 503, the first abutting block 501 is used for abutting against and sliding along the measuring inclined surface 203, the two ends of the connecting block 502 are respectively connected with the first abutting block 501 and the first measuring block 503 and make the abutting surface of the first abutting block 501 parallel to the inspection surface of the first measuring block 503, the first end stop protrusion 504 is arranged on the inspection surface of the first measuring block 503, and the top of the outer circle of the detection part 402 is located in an L-shaped clamping groove formed by the inspection surface of the first measuring block 503 and the first end stop protrusion 504, and is used for clamping the outer circle of the detection part 402 when the first dimension is in the preset range.

[0050] In the embodiment, the first gauge block 500 is used to determine whether the first dimension of the air pipe assembly 100 meets the design requirements. Specifically, the first dimension of the air pipe assembly 100 is the length distance from the intersection of the connecting section axis to the intersection of the opening end of the main pipe body 101 by the main pipe body 101 axis, which is 115.2±0.5mm. Since the measuring slope 203 is parallel to the axis of the adapter section 102, and the length distance from the intersection of the measuring slope 203 to the opening end of the main pipe body 101 by the main pipe body 101 axis is a fixed value, i.e. the distance from the intersection line of the symmetric plane of the V-shaped groove and the mounting portion 201 to the measuring slope 203 is 34mm, according to the shape of the inner hole, a core rod 400 with a diameter of φ8±0.005 is designed, and the core rod 400 is inserted into the adapter section 102 to fit the parts. At this time, the radius of the detection portion 402 is 4mm±0.005mm.

[0051] Therefore, when the first gauge block 500 is used for detection, the distance from the measuring surface of the first measuring block 503 to the detection slope is converted by the maximum value of the first dimension: (115.2+0.5)+(4+0.005)-(34-0.005)=85.7mm.

[0052] The distance from the first stop end protrusion 504 to the detection slope is converted by the minimum value of the first dimension: (115.2-0.5)+(4-0.005)-(34+0.005)=84.69mm.

[0053] In summary, when the first gauge block 500 is used to detect the first dimension, if the top of the outer circle of the detection portion 402 can pass through the detection surface of the first measuring block 503 but cannot pass through the first stop end protrusion 504, it is determined that the first dimension is qualified. If the top of the outer circle of the detection portion 402 can pass through the first stop end protrusion 504, it is determined that the first dimension is unqualified.

[0054] Further, a notch 505 is arranged at the intersection of the first stop end protrusion 504 and the detection surface of the first measuring block 503, and the notch 505 is located on the side of the first stop end protrusion 504 close to the detection portion 402. In the embodiment, the notch 505 is arranged to separate, which facilitates the operator to detect the state of the detection portion 402 and the first stop end protrusion 504, and can more intuitively determine the relationship between the first stop end protrusion 504 and the detection portion 402, thereby improving the detection efficiency.

[0055] Further, the second gauge block 600 comprises a second abutting block 601 and a second measuring block 602, the second abutting block 601 is used to abut against and slide along the measuring vertical surface 204, the second end protrusion 603 is located on the detection surface of the second measuring block 602, and the detection surface of the second measuring block 602 and the second end protrusion 603 together enclose an L-shaped clamping groove used to clamp the outer circle of the open end of the adapter section 102 when the first size is in the preset range.

[0056] In the embodiment, the second gauge block 600 is used to determine whether the second size of the air pipe assembly 100 meets the design requirements, specifically, the second size is the distance from the open end of the adapter section 102 to the central axis of the main pipe body 101, which is 12.4(+0.15, 0)mm. Since the measuring inclined surface 203 is parallel to the central axis of the adapter section 102, and the distance from the central axis of the main pipe body 101 to the measuring vertical surface 204 is a constant value, i.e. the distance from the symmetric plane of the V-shaped groove to the measuring vertical surface 204, which is 53±0.5mm.

[0057] Therefore, when the second gauge block 600 is detected, the distance from the measuring surface of the second measuring block 602 to the open end of the adapter section 102 is converted by the maximum size of the second size: (53+0.005)-12.4=40.605mm.

[0058] The distance from the second end protrusion 603 to the open end of the adapter section 102 is converted by the minimum value of the second size: (53-0.005)-(12.4-0.15)=40.445mm.

[0059] In summary, the second gauge block 600 is moved along the measuring vertical surface 204, if the end surface of the open end of the adapter section 102 can pass through the detection surface of the second measuring block 602 but cannot pass through the second end protrusion 603, it is determined that the second size is qualified, if the end surface of the open end of the adapter section 102 can pass through the first end protrusion 504, it is determined that the second size is unqualified.

[0060] Further, a sliding groove is provided on the measuring vertical surface 204 in the height direction of the measuring vertical surface 204, and a sliding block is provided on the second abutting block 601 for cooperation with the sliding groove. In the embodiment, through the cooperation of the sliding groove and the sliding block, the second gauge block 600 can be moved without deviation, thereby ensuring the accuracy of the measuring structure.

[0061] According to another aspect of the present application, there is also provided a measuring method of an air pipe assembly 100, which is measured by the air pipe assembly 100 measuring device described above, comprising the following steps:

[0062] S100: Fix the main pipe body 101 of the air pipe assembly 100 on the fixing assembly, and set the body pipe vertically, and make the open end of the connecting section 102 face the measuring vertical surface 204 and be parallel to the measuring vertical surface 204, and then install the core rod 400 into the connecting section;

[0063] S200: Move the first gauge block 500 along the measuring inclined surface 203, and detect whether the first size is qualified by the cooperation state of the first end protrusion 504 and the outer circle of the detection part 402, if not, repair the air pipe assembly 100, if qualified, check the second size.

[0064] S300: Move the second gauge block 600 along the measuring vertical surface 204, and detect whether the second size is qualified by the cooperation state of the second end protrusion 603 and the outer circle of the detection part 402, if not, repair the air pipe assembly 100, if qualified, check the subsequent air pipe assembly 100.

[0065] In the embodiment, the idea of "transforming virtual into real" is adopted in the measuring device, a core rod 400 with a diameter of φ8±0.005 is designed according to the shape of the inner hole, the core rod 400 is inserted into the connecting section 102 and is attached to the part, at this time, the core rod 400 is coaxial with the connecting section 102, the axis line in the connecting section 102 is cleverly converted into the outer circle of the cylindrical core rod 400, and then the gauge block pass-stop end method is used for measuring in the subsequent measuring process, that is, whether the size is qualified can be judged. The conversion reference measuring realizes operability, avoids the problem of inaccurate measurement due to difficult positioning, and greatly improves the measuring efficiency and saves the manufacturing cost. Specifically, the first gauge block 500 is used to measure the first size in cooperation with the measuring inclined surface 203, and the second gauge block 600 is used to measure the second size in cooperation with the measuring vertical surface 204.

[0066] Further, in the step S200, the first gauge block 500 is moved along the measuring inclined surface 203, if the top of the outer circle of the detection part 402 can pass through the detection surface of the first measuring block 503 but cannot pass through the first end protrusion 504, it is determined that the first size is qualified, if the top of the outer circle of the detection part 402 can pass through the first end protrusion 504 or the top of the outer circle of the detection part 402 cannot pass through the detection surface of the first measuring block 503, it is determined that the first size is not qualified.

[0067] In the present embodiment, the first dimension is the length of the intersection of the opening end of the main pipe body 101 through which the axis of the connecting section passes to the axis of the main pipe body 101. When measuring, the distance from the inspection surface of the first measuring block 500 to the measuring slope 203 plus the length of the intersection of the opening end of the main pipe body 101 through which the axis of the main pipe body 101 passes to the measuring slope 203 plus the radius of the measuring portion is the maximum value within the tolerance of the first dimension plus the radius of the measuring portion. The distance from the first end stop protrusion 504 to the measuring slope 203 plus the length of the intersection of the opening end of the main pipe body 101 through which the axis of the main pipe body 101 passes to the measuring slope 203 plus the radius of the measuring portion is the minimum value within the tolerance of the first dimension plus the radius of the measuring portion. Therefore, if the top of the outer circle of the detection portion 402 can pass through the detection surface of the first measuring block 503 but cannot pass through the first end stop protrusion 504, it is determined that the first dimension is qualified. If the top of the outer circle of the detection portion 402 can pass through the first end stop protrusion 504, it is determined that the first dimension is unqualified.

[0068] Further, in the step S300, the second measuring block 600 is moved along the measuring slope 203. If the end surface of the opening end of the connecting section 102 can pass through the detection surface of the second measuring block 602 but cannot pass through the second end stop protrusion 603, it is determined that the second dimension is qualified. If the end surface of the opening end of the connecting section 102 cannot pass through the detection surface of the second measuring block 602 or the end surface of the opening end of the connecting section 102 can pass through the first end stop protrusion 504, it is determined that the second dimension is unqualified.

[0069] In the present embodiment, the second dimension is the distance from the opening end of the connecting section 102 to the axis of the main pipe body 101. When measuring, the distance from the inspection surface of the second measuring block 602 to the measuring vertical surface 204 plus the distance from the measuring vertical surface 204 to the axis of the main pipe body 101 is a constant value. The maximum value of the tolerance of the second dimension is the distance from the inspection surface of the second measuring block 602 to the measuring vertical surface 204. The minimum value of the second dimension is the distance from the axis of the main pipe body 101 to the measuring vertical surface 204. Therefore, if the end surface of the opening end of the connecting section 102 can pass through the detection surface of the second measuring block 602 but cannot pass through the second end stop protrusion 603, it is determined that the second dimension is qualified. If the end surface of the opening end of the connecting section 102 can pass through the second end stop protrusion 603, it is determined that the second dimension is unqualified.

[0070] The above merely provides the preferred embodiments of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the principles and technical scope of the present application shall fall into the scope of the present application.

Claims

1. An air pipe assembly measuring device for measuring spatial dimensions of an air pipe assembly (100), the air pipe assembly (100) comprising a main pipe body (101) and an adapter section (102), an angle β formed by a central axis of the main pipe body (101) and a central axis of the adapter section (102) intersecting each other, the spatial dimensions comprising a first dimension and a second dimension, the first dimension being a length distance from the central axis of the adapter section (102) to an intersection point of the central axis of the main pipe body (101) and an open end of the main pipe body (101), the second dimension being a distance from an open end of the adapter section (102) to the central axis of the main pipe body (101), characterized in that, The air pipe assembly measuring device comprises: A positioning block (200) comprising a mounting portion (201) and an auxiliary measuring portion (202) connected with the mounting portion (201), the auxiliary measuring portion (202) comprising an upwardly arranged measuring slope (203) and a measuring vertical surface (204) arranged towards the mounting portion (201), the included angle of the measuring slope (203) and the measuring vertical surface (204) being equal to β; A fixing assembly arranged on the mounting portion (201) and used for mounting the main pipe body (101) in a vertical direction; A core rod (400) comprising an embedding portion (401) and a detection portion (402), the embedding portion (401) being used for embedding into the adapter section (102) and making the outer circle of the detection portion (402) coaxial with the central axis of the adapter section (102); A first gauge block (500) provided with a first end stop protrusion (504), the first gauge block (500) being used for moving along the measuring slope (203) and detecting the first size by cooperating the first end stop protrusion (504) with the detection portion (402); A second gauge block (600) provided with a second end stop protrusion (603), the second gauge block (600) being used for moving along the measuring vertical surface (204) and detecting the second size by cooperating the second end stop protrusion (603) with the open end of the adapter section (102); The first gauge block (500) comprises a first abutting block (501), a connecting block (502) and a first measuring block (503), the first abutting block (501) being used for abutting against and sliding along the measuring slope (203), the two ends of the connecting block (502) being connected with the first abutting block (501) and the first measuring block (503) respectively and making the abutting surface of the first abutting block (501) parallel to the checking surface of the first measuring block (503), the first end stop protrusion (504) being arranged on the checking surface of the first measuring block (503), the detection surface of the first measuring block (503) being used for defining the maximum value of the first size, the first end stop protrusion (504) being used for defining the minimum value of the first size, and the detection surface of the first measuring block (503) and the first end stop protrusion (504) together enclosing an L-shaped clamping groove used for clamping into the outer circle of the detection portion (402) when the first size is in a preset range. The second amount block (600) comprises a second abutting block (601) and a second measuring block (602), the second abutting block (601) is used for abutting against and sliding along the measuring vertical surface (204), the second end stop protrusion (603) is located on the detection surface of the second measuring block (602), the detection surface of the second measuring block (602) is used for defining the maximum value of the second size, the second end stop protrusion (603) is used for defining the minimum value of the second size, and the detection surface of the second measuring block (602) and the second end stop protrusion (603) together enclose an L-shaped clamping groove used for clamping the outer circle of the open end of the adapter section (102) when the second size is in the preset range value.

2. The air tube assembly measurement device of claim 1, wherein, The fixing assembly comprises a fixing block (300) and a pressing plate (302), the fixing block (300) is detachably mounted on the mounting portion (201), a V-shaped groove (301) extending in the vertical direction is formed in the fixing block (300), and the pressing plate (302) is detachably mounted on the fixing block (300) and located on the opening side of the V-shaped groove (301), and the pressing plate (302) is used for tightly fixing the main pipe body (101) in the V-shaped groove (301).

3. The air tube assembly measurement device of claim 2, wherein, The pressing plate (302) is detachably mounted on the fixing block (300) through a stepped screw (303).

4. The air tube assembly measurement device of claim 1, wherein, A notch (505) is formed at the intersection of the first end stop protrusion (504) and the detection surface of the first measuring block (503), and the notch (505) is located on the side of the first end stop protrusion (504) close to the detection portion (402).

5. The air tube assembly measurement device of claim 1, wherein, A sliding groove is formed in the measuring vertical surface (204) in the height direction of the measuring vertical surface (204), and a sliding block is arranged on the second abutting block (601) and used for cooperating with the sliding groove.

6. A method of measuring an air pipe assembly by the air pipe assembly measuring apparatus according to any one of claims 1 to 5, characterized by, The method comprises the following steps: S100: fixing the main pipe body (101) of the air pipe assembly (100) on the fixing assembly, vertically arranging the main pipe body (101), and arranging the open end of the adapter section (102) to face the measuring vertical surface (204) and be parallel to the measuring vertical surface (204); S200: selecting the first amount block (500) to move along the measuring inclined surface (203), detecting whether the first size is qualified through the cooperation state of the first end stop protrusion (504) and the outer circle of the detection portion (402), if not qualified, repairing the air pipe assembly (100), and if qualified, checking the second size; S300: selecting the second amount block (600) to move along the measuring vertical surface (204), detecting whether the second size is qualified through the cooperation state of the second end stop protrusion (603) and the outer circle of the detection portion (402), if not qualified, repairing the air pipe assembly (100), and if qualified, checking the subsequent air pipe assembly (100). The second amount block (600) comprises a second abutting block (601) and a second measuring block (602), the second abutting block (601) is used for abutting against and sliding along the measuring vertical surface (204), the second end stop protrusion (603) is located on the detection surface of the second measuring block (602), the detection surface of the second measuring block (602) is used for defining the maximum value of the second size, the second end stop protrusion (603) is used for defining the minimum value of the second size, and the detection surface of the second measuring block (602) and the second end stop protrusion (603) together enclose an L-shaped clamping groove used for clamping the outer circle of the open end of the adapter section (102) when the second size is in the preset range value. The fixing assembly comprises a fixing block (300) and a pressing plate (302), the fixing block (300) is detachably mounted on the mounting portion (201), a V-shaped groove (301) extending in the vertical direction is formed in the fixing block (300), and the pressing plate (302) is detachably mounted on the fixing block (300) and located on the opening side of the V-shaped groove (301), and the pressing plate (302) is used for tightly fixing the main pipe body (101) in the V-shaped groove (301). The pressing plate (302) is detachably mounted on the fixing block (300) through a stepped screw (303). A notch (505) is formed at the intersection of the first end stop protrusion (504) and the detection surface of the first measuring block (503), and the notch (505) is located on the side of the first end stop protrusion (504) close to the detection portion (402). A sliding groove is formed in the measuring vertical surface (204) in the height direction of the measuring vertical surface (204), and a sliding block is arranged on the second abutting block (601) and used for cooperating with the sliding groove. Including the following steps: S100: fixing the main pipe body (101) of the air pipe assembly (100) on the fixing assembly, vertically arranging the main pipe body (101), and arranging the open end of the adapter section (102) to face the measuring vertical surface (204) and be parallel to the measuring vertical surface (204); S200: selecting the first amount block (500) to move along the measuring inclined surface (203), detecting whether the first size is qualified through the cooperation state of the first end stop protrusion (504) and the outer circle of the detection portion (402), if not qualified, repairing the air pipe assembly (100), and if qualified, checking the second size; S300: selecting the second amount block (600) to move along the measuring vertical surface (204), detecting whether the second size is qualified through the cooperation state of the second end stop protrusion (603) and the outer circle of the detection portion (402), if not qualified, repairing the air pipe assembly (100), and if qualified, checking the subsequent air pipe assembly (100).

7. The method of measuring of an air tube assembly according to claim 6, wherein, In the step S200, the first measuring block (500) is moved along the measuring slope (203). If the top of the outer circle of the detection part (402) can pass through the detection surface of the first measuring block (503) but cannot pass through the first end protrusion (504), it is determined that the first size is qualified. If the top of the outer circle of the detection part (402) can pass through the first end protrusion (504) or the top of the outer circle of the detection part (402) cannot pass through the detection surface of the first measuring block (503), it is determined that the first size is unqualified.

8. The method of measuring of an air tube assembly according to claim 7, wherein, In the step S300, the second measuring block (600) is moved along the measuring vertical surface (204). If the end surface of the open end of the adapter section (102) can pass through the detection surface of the second measuring block (602) but cannot pass through the second end protrusion (603), it is determined that the second size is qualified. If the end surface of the open end of the adapter section (102) can pass through the second end protrusion (603) or the end surface of the open end of the adapter section (102) cannot pass through the detection surface of the second measuring block (602), it is determined that the second size is unqualified.

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