CN114812415A - Automatic detection device and detection method for inner size of container - Google Patents
Automatic detection device and detection method for inner size of container Download PDFInfo
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- CN114812415A CN114812415A CN202210484376.9A CN202210484376A CN114812415A CN 114812415 A CN114812415 A CN 114812415A CN 202210484376 A CN202210484376 A CN 202210484376A CN 114812415 A CN114812415 A CN 114812415A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
- G01B11/12—Measuring arrangements characterised by the use of optical techniques for measuring diameters internal diameters
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Abstract
The invention discloses an automatic detection device for the inner size of a container and a container detection method thereof, belonging to the technical field of measurement. The detection device is provided with the replaceable self-centering chuck, the detection device is conveniently fixed on different containers and the center of the detection device is kept in alignment, the self-centering chuck with different specifications is replaced to be matched with the containers, stable measurement on the containers is achieved, the fact that the measurement device cannot shake in the measurement process is guaranteed, the measuring rod of the detection device can move in a telescopic mode along the axis direction of the measured container, and the inner size of the container with different depths can be measured.
Description
Technical Field
The invention relates to the technical field of measurement, in particular to an automatic detection device and a detection method for the inner size of a container.
Background
The internal dimension of the pressure vessel, especially the difference between the maximum inner diameter and the minimum inner diameter of the pressure vessel, namely the difference between the maximum diameter and the minimum diameter of the pressure vessel, has an important influence on the quality and the safety performance of the pressure vessel, and is an important parameter which needs to be tested and measured in the manufacturing and regular inspection of the pressure vessel. If the maximum inner diameter difference exceeds a certain limit, the stress distribution balance and the bearing capacity of the cylinder body are influenced, stress concentration and local damage can be caused, the cylinder body of the container can be deformed in serious conditions, and safety accidents can be sent. Therefore, in GB/T150-2011 pressure vessel, part 4, manufacture, inspection and acceptance, and TSG21-2016 fixed pressure vessel safety technology supervision regulations, specific requirements for the maximum internal diameter difference of the pressure vessel are explicitly listed. GB/T150-2011 pressure vessel states that after the vessel has been welded, a direct radial of the shell is to be checked, requiring the following: (1) the difference between the maximum inner diameter and the minimum inner diameter of the same section of the shell is not more than 1 percent (0.1 percent for a forge welding container) of the inner diameter Di of the section and is not more than 25 mm; (2) when the distance between the detected section and the center of the opening is smaller than the diameter of the opening, the difference between the maximum inner diameter and the minimum inner diameter of the section is not more than 1 percent (0.1 percent for a forge welding container) of the inner diameter Di of the section and 2 percent of the diameter of the opening and is not more than 25 mm.
However, the detection of the important parameter still has the problems of non-uniform section measurement, large measurement error, low measurement efficiency and the like, and mainly has a plurality of problems in terms of measurement tools and technologies for the parameter. Firstly, as for a pressure container in manufacturing, because a cavity of the pressure container is not closed, the inner diameter of the pressure container can be measured for many times by adopting various traditional measuring tools and technologies, and the maximum inner diameter difference of the pressure container is obtained, wherein the problems that whether the measured value is on the same diameter section and passes through an axis or not, the problem that the error is large due to the abrasion of the end part of the measuring tool and the like and the problem that the measuring efficiency is low exist; and secondly, for the pressure vessel which is in service and does not have a manhole or is inconvenient to enter the interior, the problem of inconvenient measurement or incapability of measurement exists in addition to the problems.
The patent with the prior publication number of CN204346380U discloses a new method and a new device for measuring the inner diameter of a pressure vessel, wherein a measuring host of a laser measuring instrument for the inner diameter of the pressure vessel mainly comprises a laser ranging sensor, an inclination angle sensor unit, a self-positioning supporting leg and a wireless signal transceiver inside the measuring host. The self-positioning support leg is a reference plane subjected to high-precision machining, the reference plane can replace an arc surface to serve as a measuring surface after being tightly attached to the measured arc surface, a laser ranging sensor inside the measuring host emits laser to point to the center of the measured arc surface to obtain the distance between a laser outlet of the measuring host and the center of the arc surface, the deviation of the inner diameter is calculated and displayed by special measuring software in a notebook computer, an inclination angle sensor unit inside the measuring host can reflect different positions of the host in the whole measuring circumference, the size of an opening of a container is required, the self-positioning support leg is not suitable for measuring the inner size of a small-sized container, and the application range is narrow.
Disclosure of Invention
The invention aims to provide an automatic detection device for the inner size of a container, which solves the problems of large error, low efficiency and narrow application range of the inner size measurement of a pressure container.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a size automatic checkout device in container, includes from centering chuck, tailstock and measuring stick, can install on the opening of container from centering chuck, be provided with the through-hole on the centering chuck, tailstock detachably connects from centering chuck's one end, the measuring stick is worn to locate in the through-hole, the measuring stick can be followed from centering chuck's axis direction removes, the measuring stick includes first measuring head sets up the one end of measuring stick, measuring stick swing joint is in on the tailstock.
Preferably, the self-centering chuck comprises a chuck body and a plurality of clamping jaws, the plurality of clamping jaws are distributed along the center of the chuck body, and the stability of the fixed automatic detection device and the application range of clamping and mounting are improved.
Preferably, the claw comprises a moving part and a bent part, the moving part is in meshing transmission with the disc body, and the bent part is arranged on the moving part and used for being buckled on the opening of the container to improve the overlap ratio of the measuring rod and the container behind the axis.
Preferably, a plurality of claws can simultaneously move towards or away from the center of the plate body, so that the assembly and disassembly are simple and convenient.
Preferably, the measuring rod further comprises a sleeve, a sliding contact strip and a tooth-shaped part, the sliding contact strip is embedded on the side wall of the sleeve, and the tooth-shaped part is arranged on the outer wall of the sleeve and automatically pushes the measuring rod to move along the axial direction of the measuring rod, so that the measuring efficiency is improved.
Preferably, the tailstock comprises a worm and a driver, the worm is driven by the driver and meshed with the tooth-shaped part, so that the measuring rod is prevented from shaking and retreating in an unpowered state, and the accuracy of data acquisition is improved.
Preferably, the tailstock further comprises a sliding contact point, the cross section of the tailstock is arranged in a ring shape, the sliding contact point is arranged on the inner wall of the center hole of the tailstock, and the first measuring head is simpler and more reliable in data transmission without adopting a cable device and easier to maintain.
Preferably, the automatic detection device further comprises a power ring, wherein the power ring is arranged at one end, close to the tailstock, of the self-centering chuck and used for driving the measuring rod to rotate, and full-automatic data acquisition of the automatic detection device is achieved.
Do better, still include the second measuring head, the second measuring head interval sets up one side of first measuring head improves measured data's accuracy, reduces repeated measurement.
The invention also aims to provide a container detection method, which solves the problem of low efficiency of measuring the size in a pressure container.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a container detection method specifically comprises the following steps:
s1, installing a chuck: selecting the self-centering chuck having a size equal to the opening of the vessel, and mounting the self-centering chuck on the opening of the vessel;
s2, assembling: connecting the tailstock to one end, facing outwards, of the self-centering chuck, and inserting the measuring rod from the direction of the tailstock;
s3, positioning: aligning the first measuring head to one end of the inner wall of the container to be measured, and initializing a measuring program;
s4, measurement: starting a measuring program, enabling the measuring rod to rotate for one circle, enabling the first measuring head to collect the inner diameter data of the container for one circle in a point scanning mode, enabling the measuring rod to move a certain distance into the container in a stepping mode along the axis direction of the container after the measuring rod rotates for one circle, enabling the measuring rod to rotate for one circle again and collecting the inner diameter data of the container for one circle;
s5, data processing: and repeating the step S4 until the measuring rod contacts the inner wall of the other end of the container, performing interpolation calculation on the obtained point data of the inner diameter of the container to form continuous data, and inputting the continuous data into a computer drawing program to obtain a three-dimensional graph of the inner size of the container.
The invention has the beneficial effects that:
(1) this detection device possesses removable from centering chuck, conveniently fixes detection device on different containers and keeps the center to adjust well, can also be connected with the container of different specifications through the container of changing different centre gripping sizes from centering chuck, realizes the stability measurement of different specification containers, prevents that the measuring stick from receiving external environment influence, guarantees measuring result's accuracy.
(2) The measuring rod of the detection device can move in a telescopic mode along the axis direction of a measured container, the container inner size of different depths can be measured, the measuring rod is connected with the self-centering chuck in a sliding mode, and the stability and the measuring accuracy of the measuring rod in the moving process are guaranteed.
(3) The measuring rod and the transmission line on the tailstock are in sliding contact for signal transmission, so that the measuring signal is transmitted accurately and continuously, the structure of the automatic detection device is simplified, and the service life is prolonged.
Drawings
Fig. 1 is an isometric view of an automatic detection device for the internal dimensions of a container provided by the present invention;
fig. 2 is a front view of an automatic detecting apparatus for an inner size of a container according to the present invention;
FIG. 3 is a left side view of the automatic detecting apparatus for the inside dimension of a container according to the present invention;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 5 is a cross-sectional view taken along line B-B of FIG. 2;
fig. 6 is an exploded view of an automatic detection apparatus for the inner size of a container according to the present invention;
FIG. 7 is a cross-sectional view of a jaw provided by the present invention;
fig. 8 is an application scenario diagram provided by the present invention.
Reference numerals:
1. a self-centering chuck; 11. a tray body; 12. a claw; 121. a moving part; 122. a bending section; 123. an anti-drop part; 13. a through hole; 2. a tailstock; 21. a base body; 22. connecting columns; 23. a worm; 24. a driver; 25. a sliding contact; 3. a power ring; 4. a measuring rod; 41. a sleeve; 42. a first measuring head; 43. a sliding contact bar; 44. a tooth-shaped portion; 45. a second measuring head; 46. a stopper; 5. a container; 51. a cavity; 52. a flange; 6. a data transmission module; 61. a wireless antenna; 7. a handle; 8. and a data processing module.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
As shown in fig. 1-7, an automatic detection device for the inner size of a container comprises a self-centering chuck 1, a tailstock 2 and a measuring rod 4, wherein the self-centering chuck 1 is buckled on a flange 52 of an opening of the container 5, a through hole 13 is formed in the center of the self-centering chuck 1, the tailstock 2 is detachably connected to one end, away from the opening of the container 5, of the self-centering chuck 1, the measuring rod 4 is arranged in the through hole 13 in a penetrating manner, the measuring rod 4 can move along the axial direction of the self-centering chuck 1, the measuring rod 4 comprises a first measuring head 42 and a second measuring head 45, the first measuring head 42 and the second measuring head 45 are fixed in the measuring rod 4 at intervals, and the measuring rod 4 is movably connected to the tailstock 2.
Further, the self-centering chuck 1 comprises a chuck body 11 and three jaws 12, three through grooves are uniformly distributed on the chuck body 11, the through grooves are communicated with the side wall and the through holes 13 of the chuck body 11 and are used for being matched with the jaws 12 to realize stable movement of the jaws 12, the three jaws 12 are uniformly distributed along the center of the chuck body 11, the jaws 12 can simultaneously move towards or away from the center of the chuck body 11, and the center of the chuck body 11 is automatically aligned with the center of the flange 52.
Preferably, the jaws 12 of the self-centering chuck 1 can adopt four jaws 12 or five jaws 12, and the size of the flange 52 which is buckled according to requirements is matched, so that the self-centering chuck 1 can be stably connected to the opening of the container 5, and the stability of the whole detection device is improved.
Further, the claw 12 includes a moving portion 121, a bending portion 122 and an anti-falling portion 123, the moving portion 121 adopts a rack for meshing transmission with the disc body 11, the bending portion 122 is fixed on the moving portion 121, the anti-falling portion 123 is located at the end of the bending portion 122, and a U-shaped buckle is formed for buckling on the flange 52 to prevent the claw 12 from loosening or preventing detachment during tightening and fixing.
Preferably, the measuring rod 4 further includes a sleeve 41, a sliding contact strip 43 and a toothed portion 44, the sleeve 41 is made of a seamless stainless steel tube, the sliding contact strip 43 is made of copper alloy and is embedded on a side wall of the sleeve 41, one end of the sliding contact strip is connected with the first measuring head 42 and the second measuring head 45, an outward surface of the sliding contact strip 43 is abutted to transmit signals acquired by the first measuring head 42 and the second measuring head 45, the toothed portion 44 is a trapezoidal tooth and is located on an outer wall of the sleeve 41, teeth of the trapezoidal tooth are fully distributed along an axial direction of the sleeve 41, and the driver 24 is used for pushing the measuring rod 4 to move integrally.
Preferably, the front and rear ends of the sleeve 41 are closed to prevent dust or moisture from entering the corrosion element, and the rear end of the sleeve is provided with a stopper 46, wherein the diameter of the stopper 46 is larger than the central hole of the tailstock 2, so that the measurement rod 4 can be prevented from falling off after moving beyond the measuring range, and the precision element on the measurement rod 4 can be prevented from being damaged.
Preferably, the measuring rod 4 has a scale on its side wall, which is distributed along the axis of the sleeve 41 over the body of the sleeve 41 for determining the starting position, and can be positioned for repeated measurements at individual positions inside the container 5, thereby reducing the operation time.
Preferably, three spliced poles 22 are installed on a terminal surface of the base 21 of the tailstock 2, one end of each spliced pole 22 is riveted on the base 21, the other end of each spliced pole 22 is provided with a step, the step and the base 21 are matched with each other through a mounting hole and then fixed through a bolt, the base 21 is stably fixed on the self-centering chuck 1, and the tailstock 2 and the self-centering chuck 1 are quickly disassembled and assembled.
Preferably, the tailstock 2 comprises a worm 23 and a driver 24, the worm 23 is driven by the driver 24, the worm 23 is meshed with the toothed part 44, the arrangement is such that the driver 24 pushes the measuring rod 4 to move stably, and the inaccurate moving distance of the measuring rod 4 when the measuring rod 4 is subjected to resistance in the cavity 51 is prevented by utilizing the self-locking characteristic of the meshing of the worm 23, so that the accuracy of the measured data is reduced.
Preferably, the tailstock 2 further comprises a sliding contact 25, the cross section of the tailstock 2 is annular, the sliding contact 25 is fixed on the inner wall of a center hole of the tailstock 2, the sliding contact 25 is made of copper alloy, the electric conduction capability is strong, the wear resistance is good, and certain elasticity is achieved, so that the sliding contact 25 and the sliding contact strip 43 can be stably contacted in the moving process of the measuring rod 4, and data loss and interruption are prevented.
Preferably, the automatic detection device is further provided with a power ring 3, the power ring 3 is a hollow cup stepping motor and is installed at one end of the self-centering chuck 1 close to the tailstock 2, and the measuring rod 4 and the hollow cup on the power ring 3 are used for driving the measuring rod 4 to rotate so as to complete circumferential scanning of the inner wall of the container 5.
Preferably, the inner wall of the hollow cup on the power ring 3 is symmetrically provided with a limiting surface, the limiting surface faces the center of the through hole 13, the side wall of the sleeve 41 is provided with a smooth surface, the smooth surface is in contact with the limiting surface, the sleeve 41 is limited to rotate relative to the power ring 3, relative sliding of the measuring rod 4 in the measuring process is prevented, and measuring precision is reduced.
Preferably, the first measuring head 42 and the second measuring head 43 are composed of a laser sensor and a receiver, the two measuring heads 42 are embedded on the sleeve 41 at intervals, and the laser emitting lens and the receiving tab of the measuring head 42 are slightly lower than the outer surface of the sleeve 41.
Preferably, still be equipped with data transmission module 6 and data processing module 8 on this automatic checkout device, data transmission module 6 and data processing module 8 are all installed on tailstock 2, are equipped with wireless antenna 61 on the data transmission module 6, and data transmission module 6 adopts WIFI or bluetooth to carry out data transmission, can be with the data of measuring such as size, angle etc. on the mobile processing terminal that sends, also can be with the internal dimension deviation and the local size change data after preliminary treatment, send correspondingly on receiving terminal.
Preferably, the tailstock 2 is provided with a lithium battery and an external power socket so as to meet the requirement of using under the condition that electricity cannot be taken or a complex terrain is obtained, and the application range and the application occasion of the automatic detection device are improved.
Compared with the prior device and technology, firstly, the measuring device can complete measurement at any position parallel to the central axis of the container, the measurement is not limited by the position, and meanwhile, the central positioning error is eliminated; secondly, the measurement data can be guaranteed to be the same section and perpendicular to the effective section of the axis; thirdly, the measurement precision can meet the national standard requirements, and the main error of the method is from a laser ranging module and can be generally controlled to be a millimeter-level error; fourthly, in the digital measuring process, scales do not need to be read manually, so that errors in the reading process are prevented, and the reliability of the measuring tool is improved; fifthly, the measuring efficiency is higher, the measurement of the inner space of a pressure container can be realized within several minutes, and then the detachable structure design of the scheme is benefited, so that the carrying and the use are more convenient, the requirement on use occasions is low, and the application range is wide.
The detection principle of the detection device is as follows:
the automatic detection device is formed by combining a self-centering chuck 1, a tailstock 2, a power ring 3, a measuring rod 4 and a data processing module 8, the whole device is fixed on an opening of a container 5 by the self-centering chuck 1, the stability of the whole measuring process is ensured, the tailstock 2 is used for driving the measuring rod 4 to advance, the distance of each advancing of the measuring rod 4 is equal in interval so as to obtain the size change information inside the container 5, an annular encoder arranged on the power ring 3 accurately controls the rotation of the measuring rod 4, the measuring rod 4 is ensured to rotate for a circle, more than 1000 groups of data can be uniformly collected in an angle, the power ring 3 is controlled by a high-precision stepper motor, the measuring rod 4 is driven to move slowly and uniformly, two measuring heads on the measuring rod 4 simultaneously carry out size measurement, and a second measuring head 45 is used for comparing with the data measured by a first measuring head 42, the method has the advantages that random errors or local errors caused by external interference in a single measurement result are prevented, accuracy of measured data is improved, measured data can be transmitted to an external computing terminal in real time by the data transmission module 6, more careful processing is carried out on the data, data processing can be completed when measurement is completed, measurement efficiency is improved, accurate three-dimensional modeling can be achieved after the data are transmitted to the external computing terminal, and visualization of the measured data is achieved.
The measuring process of the automatic detection device is as follows:
s1, installing a chuck: selecting a self-centering chuck 1 with the size equal to that of the opening of the container 5, and installing the self-centering chuck 1 on the opening of the container 5;
s2, assembling: connecting the tail seat 2 to one end of the self-centering chuck 1 facing outwards, and inserting the measuring rod 4 from the direction of the tail seat 2;
s3, positioning: aligning the first measuring head 42 to one end of the inner wall of the container 5 to be measured, and initiating a measuring procedure; the measuring program is used for controlling the moving degree of the measuring rod 4, is programmed by a predetermined path and is loaded into a controller of the automatic detection device;
s4, measurement: starting a measuring program, enabling the measuring rod 4 to rotate for one circle, enabling the first measuring head 42 to collect the data of the inner diameter of the container 5 for one circle in a point scanning mode, enabling the measuring rod 4 to move a certain distance into the container 5 in a stepping mode along the axial direction of the container 5 after the measuring rod 4 completes the rotation, enabling the measuring rod 4 to rotate for one circle again and collect the data of the inner diameter of the container 5 for one circle, and enabling the minimum stepping distance of the measuring rod 4 moving into the container 5 to be 0.1 mm;
s5, data processing: repeating the step S4 until the measuring rod 4 contacts the inner wall of the other end of the container 5, performing interpolation calculation on the obtained data of the inner diameter point of the container 5 to form continuous data, inputting the continuous data into a computer drawing program to obtain a three-dimensional graph of the inner size of the container 5, performing visualization processing on the received continuous data by the computer and displaying the data in the form of the three-dimensional graph, wherein an operator can check the data such as the difference value between the maximum size and the minimum size, the change rate of the inner size and the like as the basis of container quality detection.
More specifically, referring to fig. 1, firstly, selecting a self-centering chuck 1 with a proper specification, pressing and attaching the self-centering chuck 1 to a flange 52 of a container 5 model, rotating a handle 7 to enable three jaws 12 to fasten the edge of the flange 52, applying a pre-tightening force to align the self-centering chuck 1 with the rotation axis of the container 5, then installing a power ring 3 on the outward end surface of the self-centering chuck 1, then aligning and installing a tailstock 2 with the center of the self-centering chuck 1 to ensure that the central axes of the two are overlapped, finally inserting a measuring rod 4 into an annular hole of the tailstock 2 to enable the head of the measuring rod 4 to be positioned at the opening side line of the container 5, electrifying, self-checking and initializing data, starting a detection device after the completion, slowly rotating the measuring rod 4 under the driving of the power ring 3 under the control of a set degree, performing data acquisition by a first measuring head 42 at the front end of the measuring rod 4 and transmitting the acquired data to a data processing module 8 through a sliding contact strip 43 and a sliding contact point 25, generating a cross section, after data acquisition of one cross section is finished, driving the worm 23 by the driver 24, pushing the sleeve 41 to move a certain distance to the interior of the container 5 by the meshing of the worm 23 and the tooth-shaped part 44 on the sleeve 41, after the movement is finished, performing data acquisition by the autorotation of the measuring rod 4, repeating the movement and rotation acquisition process of the measuring rod 4 until the measuring rod 4 touches the inner wall of the container 5, performing data splicing on the acquired data on the data processing module 8 to form a three-dimensional stereo diagram of the inner dimension of the container 5, and outputting data such as the maximum deviation of the inner dimension, the change rate of the inner dimension and the like.
In addition, the automatic detection device can also be used for measuring semi-finished products and containers without flanges in processing, when the containers are measured, a support needs to be built by using sectional materials or clamps to serve as a fixing point of the self-centering chuck 1 and a measuring positioning point, the support is manually arranged at an opening of the container needing to be measured, the automatic detection device processes collected data to obtain a three-dimensional graph of the container, the installation precision of the detection device is low, and the detection application range is wide.
Example two
As shown in fig. 8, the same features are not described again with reference to the embodiment, but the differences are: the self-centering chuck 1 can be matched according to the diameter of the flange 52, and the self-centering chucks 1 of different sizes are used for connection so as to meet the requirement that containers 5 of different sizes carry out inner size detection, ensure the stability of the movement of the measuring rod 4 in the measuring process, improve the accuracy of the measuring result and reduce the probability of the repetition amount.
EXAMPLE III
The same features of the embodiment are not described in detail, but the difference is that the push of the measuring rod 4 is driven by meshing the gear with the toothed portion 44, the gear is connected to the driver 24, the rotation direction of the gear is collinear with the moving direction of the measuring rod 4, so that the power structure for driving the measuring rod 4 to move is small in size, and the gear meshing transmission efficiency is high, and the measuring rod is suitable for being used when a container 5 with a large depth or length is measured.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. The utility model provides a size automatic checkout device in container, includes from centering chuck (1), tailstock (2) and measuring stick (4), from centering chuck (1) mountable on the opening of container (5), be provided with through-hole (13) on centering chuck (1), tailstock (2) detachably connects from the one end of centering chuck (1), measuring stick (4) are worn to locate in through-hole (13), its characterized in that, measuring stick (4) can be followed from the axis direction removal of centering chuck (1), measuring stick (4) include first measuring head (42), first measuring head (42) set up the one end of measuring stick (4), measuring stick (4) swing joint be in on tailstock (2).
2. The automatic detection device for the inside dimension of a container according to claim 1, wherein:
the self-centering chuck (1) comprises a chuck body (11) and a plurality of clamping jaws (12), and the clamping jaws (12) are distributed along the center of the chuck body (11).
3. The automatic detection device for the inside dimension of a container according to claim 2, wherein:
the claw (12) comprises a moving part (121) and a bent part (122), the moving part (121) is in meshing transmission with the disc body (11), and the bent part (122) is arranged on the moving part (121) and used for being buckled on the opening of the container (5).
4. The automatic detection device for the inside dimension of a container according to claim 3, wherein:
a plurality of the claws (12) are arranged to be simultaneously movable toward or away from the center of the tray (11).
5. The automatic detection device for the inside dimension of a container according to claim 1, wherein:
the measuring rod (4) further comprises a sleeve (41), a sliding contact strip (43) and a tooth-shaped part (44), the sliding contact strip (43) is embedded on the side wall of the sleeve (41), and the tooth-shaped part (44) is arranged on the outer wall of the sleeve (41).
6. The automatic detection device for the inside dimension of a container according to claim 5, wherein:
the tailstock (2) comprises a worm (23) and a driver (24), wherein the worm (23) is driven by the driver (24), and the worm (23) is meshed with the tooth-shaped part (44).
7. The automatic detection device for the inside dimension of a container according to claim 6, wherein:
the tailstock (2) further comprises a sliding contact (25), the cross section of the tailstock (2) is arranged in a ring shape, and the sliding contact (25) is arranged on the inner wall of the center hole of the tailstock (2).
8. The automatic detection device for the inside dimension of a container according to claim 7, wherein:
the self-centering measuring device is characterized by further comprising a power ring (3), wherein the power ring (3) is arranged at one end, close to the tailstock (2), of the self-centering chuck (1) and used for driving the measuring rod (4) to rotate.
9. The automatic detection device for the inside dimension of a container according to claim 1, wherein:
the measuring head further comprises a second measuring head (45), wherein the second measuring head (45) is arranged on one side of the first measuring head (42) at intervals.
10. A method for detecting the inner size of a container, which is realized by the automatic detection device for the inner size of the container as claimed in any one of claims 1 to 9, and specifically comprises the following steps:
s1, installing a chuck: -selecting the self-centering chuck (1) having a size equal to the opening of the vessel (5), mounting the self-centering chuck (1) onto the opening of the vessel (5);
s2, assembling: connecting the tail seat (2) to one end of the self-centering chuck (1) facing outwards, and inserting the measuring rod (4) from the direction of the tail seat (2);
s3, positioning: aligning the first measuring head (42) to one end of the inner wall of the container (5) to be measured, and initiating a measuring procedure;
s4, measurement: starting a measuring program, wherein the measuring rod (4) rotates for one circle, the first measuring head (42) collects the inner diameter data of one circle of the container (5) in a point scanning mode, after the rotation of the measuring rod (4) is finished, the measuring rod (4) moves a certain distance into the container (5) in a stepping mode along the axial direction of the container (5), and the measuring rod (4) rotates for one circle again and collects the inner diameter data of one circle of the container (5);
s5, data processing: and repeating the step S4 until the measuring rod (4) contacts the inner wall of the other end of the container (5), performing interpolation calculation on the obtained data of the inner diameter point of the container (5) to form continuous data, and inputting the continuous data into a computer drawing program to obtain a three-dimensional graph of the inner size of the container (5).
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| CN202210484376.9A CN114812415A (en) | 2022-05-06 | 2022-05-06 | Automatic detection device and detection method for inner size of container |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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