CN112815886A - Wall thickness measuring system for thin-wall revolving body workpiece - Google Patents
Wall thickness measuring system for thin-wall revolving body workpiece Download PDFInfo
- Publication number
- CN112815886A CN112815886A CN202011641852.0A CN202011641852A CN112815886A CN 112815886 A CN112815886 A CN 112815886A CN 202011641852 A CN202011641852 A CN 202011641852A CN 112815886 A CN112815886 A CN 112815886A
- Authority
- CN
- China
- Prior art keywords
- subsystem
- workpiece
- wall thickness
- ultrasonic
- thickness measuring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
- G01B17/02—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
Abstract
The invention discloses a thin-wall revolving body workpiece wall thickness measuring system, which comprises an ultrasonic wall thickness measuring subsystem, a workpiece centering and fixing subsystem, a motion scanning subsystem, a coupling agent supplying subsystem and a software system, wherein the ultrasonic wall thickness measuring subsystem is connected with the workpiece centering and fixing subsystem through a pipeline; the workpiece centering and fixing subsystem is used for fixing a workpiece to be detected; the motion scanning subsystem drives the ultrasonic wall thickness measuring subsystem to realize the measurement of the wall thickness of the workpiece to be measured; the software system is based on an industrial personal computer and performs data reporting communication with the ultrasonic wall thickness measuring subsystem, the test workpiece centering and fixing system, the motion scanning subsystem and the coupling agent supplying subsystem by taking a data line as a medium. The measuring system has the characteristics of high reliability, good measuring repeatability and the like.
Description
Technical Field
The invention belongs to the technical field of ultrasonic automatic thickness measurement, and particularly relates to a wall thickness measuring system for a thin-wall revolving body workpiece.
Background
The thickness-diameter ratio of the thin-wall revolving body workpiece is less than 1: 100, thin-wall shell parts represented by a storage tank, a rotary shell and the like are key parts on aerospace heavy equipment. If the wall thickness does not meet the index requirement, serious consequences can be caused. However, the parts have various structures, complex overall surface shapes, a plurality of points to be measured and thin wall thickness and are difficult to clamp, so that the efficient and precise measurement of the thickness is extremely difficult.
At present, ultrasonic thickness detection is the first choice for measuring the wall thickness of metal thin-wall workpieces due to the simple principle and high measurement precision. Most workpiece manufacturers adopt manual ultrasonic thickness measurement for thickness detection of the workpieces, and measurement point position selection, force control during measurement, measurement angle adjustment, measurement effect judgment and the like of the workpieces are judged by detection workers according to experience. The measurement efficiency is low, and the measurement has larger human errors. Automatic ultrasonic thickness measurement is also continuously developed, but most of the automatic ultrasonic thickness measurement is directed at the thickness measurement of simple workpieces such as pipes and plates. For example, the thesis "ultrasonic detection system for controlling the wall thickness of a thin-wall copper tube" (Yuan Xiao, Liu Qing Yan rock. ultrasonic detection system for controlling the wall thickness of a thin-wall copper tube [ J ]. tool technology, 2011,45(12):74-77.) carries out ultrasonic thickness measurement on a tube. Therefore, an automatic measurement method must be designed for the problem of the wall thickness of the complicated thin-wall type revolving body workpiece.
Disclosure of Invention
The invention aims to provide a thin-wall revolving body workpiece wall thickness measuring system, which realizes clamping centering, couplant supply, contact force measurement control, probe angle automatic adjustment and workpiece wall thickness automatic detection of a thin-wall revolving body workpiece, improves the detection efficiency and reduces the labor cost.
In order to solve the technical problems, the invention adopts the following technical scheme: a thin-wall rotary body workpiece wall thickness measuring system comprises an ultrasonic wall thickness measuring subsystem, a workpiece centering and fixing subsystem, a motion scanning subsystem, a coupling agent supply subsystem and a software system; the workpiece centering and fixing subsystem is used for fixing a workpiece to be detected; the motion scanning subsystem drives the ultrasonic wall thickness measuring subsystem to realize the measurement of the wall thickness of the workpiece to be measured; the software system is based on an industrial personal computer and performs data reporting communication with the ultrasonic wall thickness measuring subsystem, the test workpiece centering and fixing system, the motion scanning subsystem and the coupling agent supplying subsystem by taking a data line as a medium.
Furthermore, the ultrasonic wall thickness measuring subsystem comprises an ultrasonic thickness measuring probe, a pressure sensor and an elastic element, and the ultrasonic thickness measuring probe is connected with the pressure sensor through the elastic element.
Further, the pressure sensor and the ultrasonic thickness measuring probe are coaxially mounted.
Furthermore, the pressure sensor and the elastic element are arranged in a base, and the base is connected with an industrial mechanical arm of the motion scanning subsystem through a mounting plate.
Furthermore, a probe cap is arranged on the periphery of the ultrasonic thickness measuring probe.
Furthermore, the workpiece centering fixing subsystem comprises a revolving body workpiece fixing device and a revolving body workpiece centering structure;
the revolving body workpiece centering structure is used for placing revolving body workpieces, the revolving body workpiece fixing device comprises a through hole and a vacuum pump, the through hole is formed in the center of the revolving body workpiece centering structure, the vacuum pump is used for vacuumizing the interiors of the workpieces, and the workpieces are fixed in an air pressure difference mode.
Furthermore, the revolving body workpiece centering structure adopts a step-shaped centering clamp, so that the revolving workpieces with various sizes are coaxially centered and positioned with the revolving shaft.
Further, the motion scanning subsystem comprises an industrial mechanical arm and a rotary table, wherein a revolving body workpiece centering structure is arranged on the rotary table, and the revolving body workpiece centering structure is coaxially fixed with a rotary shaft of the rotary table to drive the workpiece to be detected to rotate; the industrial mechanical arm is connected with the ultrasonic wall thickness measuring subsystem and drives the ultrasonic wall thickness measuring subsystem to be close to the surface of the workpiece to be measured.
Furthermore, the couplant supply subsystem comprises an electric couplant supply pump, a couplant supply pipe and a joint, the electric couplant supply pump is connected with the joint through the couplant supply pipe, the joint is connected to the ultrasonic thickness measuring probe, and the couplant is output between the ultrasonic thickness measuring probe and a workpiece to be measured and used for making up gaps and reducing ultrasonic signal attenuation.
Further, the coupling agent is glycerol.
Compared with the problems caused by the existing method or device, the thin-wall revolving body workpiece wall thickness measuring system has the advantages that: (1) the automatic ultrasonic thickness measuring system is designed by combining the ultrasonic thickness measuring system with the industrial robot and the rotary table and matching with subsystems such as couplant supply and the like, so that the problem of difficulty in automatic detection of the thickness of a thin-wall rotary workpiece is solved; (2) the ladder-shaped centering clamp designed by the invention solves the problem of coaxial positioning of the revolving shaft and the rotary table of different types of revolving body workpieces; (3) the thin-wall workpiece adsorption clamping method designed by the invention has adjustable vacuum degree, and solves the problems that the thin-wall rotary workpiece is difficult to clamp and the clamp has great influence on ultrasonic thickness measurement; (4) the invention can be used for other automatic detection of the contact wall thickness.
Drawings
FIG. 1 is an overall schematic view of a thin-wall rotary workpiece wall thickness measuring system according to an embodiment of the invention.
FIG. 2 is a schematic cross-sectional view of a workpiece centering and retaining mechanism in an embodiment of the present invention.
Fig. 3 is a schematic diagram of the structure of an ultrasonic thickness measuring end in the embodiment of the invention.
Detailed Description
The invention provides a thin-wall revolving body workpiece wall thickness measuring system which comprises an ultrasonic wall thickness measuring subsystem, a workpiece centering and fixing subsystem, a motion scanning subsystem, a coupling agent supplying subsystem, a signal processing subsystem and a software system, wherein the ultrasonic wall thickness measuring subsystem carries out thickness data processing and communication through a sensor and the signal processing subsystem, and the software system carries out report data communication with the ultrasonic wall thickness measuring subsystem, the workpiece centering and fixing subsystem, the motion scanning subsystem, the coupling agent supplying subsystem and the like by taking a data line as a medium based on an industrial personal computer.
The ultrasonic wall thickness measuring subsystem comprises an ultrasonic thickness measuring probe, a pressure sensor and an elastic element, and the ultrasonic thickness measuring probe is connected with the pressure sensor through the elastic element. The pressure sensor and the ultrasonic thickness measuring probe are coaxially arranged, so that the contact force between the ultrasonic probe and the surface of a workpiece can be accurately measured, and the system can control the contact force during measurement.
The workpiece centering and fixing subsystem comprises a revolving body workpiece fixing device and a revolving body workpiece centering structure. The revolving body workpiece fixing device adopts a mode of vacuumizing the interior of a workpiece and utilizing air pressure difference to fix the workpiece, the vacuum degree is controllable, the vacuum degree in the interior of a thin-wall workpiece can be read and adjusted, and the revolving body workpiece fixing device is used for adsorbing and fixing the thin-wall workpieces of different types and sizes. The revolving body workpiece centering structure comprises a workpiece centering fixing clamp tool, and is sealed by adopting a polyurethane material; the centering fixing clamp tool is coaxially fixed with the revolving shaft of the revolving platform, so that the coaxial fixation of the axis of the thin-wall revolving body workpiece and the axis of the workbench is realized; the centering and fixing clamp tool is designed in a multistage stepped mode, so that rotary workpieces of various sizes are centered and positioned coaxially with a rotary shaft, and the clamp tool is free from being mounted and dismounted in the detection process of different workpieces. The inside and the outside of the workpiece are not covered and shielded, and the contact type ultrasonic wall thickness detection process is not influenced.
The motion scanning subsystem comprises an industrial mechanical arm and a rotary table, and can cover the outer surface of the whole workpiece by the tail end of the motion scanning subsystem.
The couplant supply subsystem comprises an electric couplant supply pump, a couplant supply pipe and a joint. The electric couplant supply pump is connected with the joint through the couplant supply pipe, the joint is connected to the ultrasonic thickness measuring probe, and the couplant is output between the ultrasonic thickness measuring probe and a workpiece to be measured and used for making up a gap and reducing ultrasonic signal attenuation.
The thickness measuring system accurately monitors the contact force between the ultrasonic probe and the surface of the workpiece in real time in the ultrasonic thickness measuring process, ensures that the workpiece and the detection equipment are not damaged, and simultaneously ensures the stability and the accuracy of measurement.
In order to explain the technical content of the present invention in detail and achieve the object and effect, the following detailed description is made with reference to the accompanying drawings in combination with the embodiments.
Examples
With reference to fig. 1 and fig. 2, the present embodiment is a thin-wall revolved body workpiece wall thickness measuring system, which includes an industrial control system 1, an industrial robot 5, a revolving platform 3, a centering fixture 6, a workpiece to be measured 2, and an ultrasonic thickness measuring end structure 4.
The ultrasonic thickness measuring end structure 4 is the ultrasonic wall thickness measuring subsystem, the centering fixture 6 is the workpiece centering and fixing subsystem, the industrial robot 5 is the industrial mechanical arm, and a software system is installed in the industrial control system 1.
Combine fig. 1, fig. 2 and fig. 3, revolving platform 3 is installed in ground, centering anchor clamps 6 are fixed on revolving platform 3, and rather than concentric, work piece 2 that awaits measuring puts on centering anchor clamps 6 and guarantees that workpiece 2 that awaits measuring is coaxial with revolving platform 3, industrial robot 5 installs in the side of revolving platform 3, ultrasonic thickness measurement terminal structure 4 passes through the bolt and installs on industrial robot 5's terminal shaft terminal surface, industrial control system 1 installs in industrial robot 5 side suitable position, and link to each other with industrial robot 5 and ultrasonic thickness measurement probe 13, pressure sensor 11 in the ultrasonic thickness measurement terminal structure 4 through the cable. The ultrasonic thickness measuring probe 13 is connected with the pressure sensor 11 through the elastic element 12, the elastic element 12 and the pressure sensor 11 are arranged inside the base 10, and the base 10 is connected with the industrial robot 5 through the mounting plate 9. The periphery of the ultrasonic thickness measuring probe 13 is provided with a probe cap 15. A joint 14 of the couplant supply subsystem is connected with the ultrasonic thickness measuring probe 13, and the couplant is output between the ultrasonic thickness measuring probe 13 and a workpiece to be measured and used for making up a gap and reducing ultrasonic signal attenuation.
The lower part of the centering clamp 6 is connected with the rotary table 3 through a connecting table surface 7, and the centers of the centering clamp 6 and the table surface 7 are provided with a through hole 8 which is communicated with each other and is connected with a vacuum pump.
With reference to fig. 1, 2 and 3, the working process of the present invention is: starting software, and controlling a vacuum pump to adsorb and fix a workpiece through the software; then controlling the robot to sequentially move to the position above a pre-taught measurement point, slowly pressing an ultrasonic probe 13 at the measurement point through an ultrasonic thickness measurement tail end structure 4, and automatically reading the wall thickness value of a workpiece at the point by software; when the measured value of the wall thickness is abnormal, for example, no measured data exists, and the data value obviously deviates from the normal value, multiple times of automatic retest verification are carried out on the same point location; after all the point positions are measured in sequence according to the steps, software automatically stores the point positions on a computer in a database mode for technicians to look up or issue reports.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and scope of the present invention are included in the present invention.
Claims (10)
1. A thin wall solid of revolution work piece wall thickness measurement system which characterized in that: the ultrasonic wall thickness measuring system comprises an ultrasonic wall thickness measuring subsystem, a workpiece centering and fixing subsystem, a motion scanning subsystem, a coupling agent supplying subsystem and a software system; the workpiece centering and fixing subsystem is used for fixing a workpiece to be detected; the motion scanning subsystem drives the ultrasonic wall thickness measuring subsystem to realize the measurement of the wall thickness of the workpiece to be measured; the software system is based on an industrial personal computer and performs data reporting communication with the ultrasonic wall thickness measuring subsystem, the test workpiece centering and fixing system, the motion scanning subsystem and the coupling agent supplying subsystem by taking a data line as a medium.
2. The system for measuring the wall thickness of the thin-wall revolution body workpiece according to claim 1, wherein the ultrasonic wall thickness measuring subsystem comprises an ultrasonic thickness measuring probe, a pressure sensor and an elastic element, and the ultrasonic thickness measuring probe is connected with the pressure sensor through the elastic element.
3. The ultrasonic wall thickness measurement subsystem according to claim 2, wherein said pressure sensor is mounted coaxially with an ultrasonic thickness measurement probe.
4. The ultrasonic wall thickness measurement subsystem of claim 2, wherein the pressure sensor, resilient element are disposed within a base, the base being connected to an industrial robotic arm of the motion scanning subsystem by a mounting plate.
5. The ultrasonic wall thickness measurement subsystem according to claim 2, wherein said ultrasonic thickness measurement probe is peripherally provided with a probe cap.
6. The thin-wall rotary workpiece wall thickness measuring system according to claim 1, wherein the workpiece centering fixture subsystem comprises a rotary workpiece fixture and a rotary workpiece centering structure;
the revolving body workpiece centering structure is used for placing revolving body workpieces, the revolving body workpiece fixing device comprises a through hole and a vacuum pump, the through hole is formed in the center of the revolving body workpiece centering structure, the vacuum pump is used for vacuumizing the interiors of the workpieces, and the workpieces are fixed in an air pressure difference mode.
7. The thin-wall rotary workpiece wall thickness measuring system according to claim 6, wherein the rotary workpiece centering structure adopts a step-type centering fixture to realize coaxial centering and positioning with the rotary shaft of rotary workpieces with various sizes.
8. The system for measuring the wall thickness of the thin-wall rotary workpiece according to claim 6, wherein the motion scanning subsystem comprises an industrial mechanical arm and a rotary table, a rotary workpiece centering structure is arranged on the rotary table, and the rotary workpiece centering structure is coaxially fixed with a rotary shaft of the rotary table and drives the workpiece to be measured to rotate; the industrial mechanical arm is connected with the ultrasonic wall thickness measuring subsystem and drives the ultrasonic wall thickness measuring subsystem to be close to the surface of the workpiece to be measured.
9. The system for measuring the wall thickness of the thin-wall revolving body workpiece according to claim 1, wherein the couplant supply subsystem comprises an electric couplant supply pump and a joint, the electric couplant supply pump is connected with the joint through a couplant supply pipe, the joint is connected to the ultrasonic thickness measuring probe, and the couplant is output between the ultrasonic thickness measuring probe and the workpiece to be measured, so that a gap is made up, and ultrasonic signal attenuation is reduced.
10. The thin-wall solid of revolution workpiece wall thickness measuring system of claim 9, characterized in that said coupling agent is glycerol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011641852.0A CN112815886A (en) | 2020-12-31 | 2020-12-31 | Wall thickness measuring system for thin-wall revolving body workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011641852.0A CN112815886A (en) | 2020-12-31 | 2020-12-31 | Wall thickness measuring system for thin-wall revolving body workpiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112815886A true CN112815886A (en) | 2021-05-18 |
Family
ID=75858216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011641852.0A Pending CN112815886A (en) | 2020-12-31 | 2020-12-31 | Wall thickness measuring system for thin-wall revolving body workpiece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112815886A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117570867A (en) * | 2024-01-16 | 2024-02-20 | 珠峰线缆有限公司 | Dimension inspection equipment for cable manufacturing |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000009461A (en) * | 1998-06-19 | 2000-01-14 | Kawasaki Steel Corp | Apparatus for measuring pipe wall thickness and pipe wall thickness measuring method using the same |
| CN101614533A (en) * | 2008-06-26 | 2009-12-30 | 中国科学院金属研究所 | A kind of energy accurately measuring thickness of ultrathin workpieces method and instrument |
| CN103278114A (en) * | 2013-06-07 | 2013-09-04 | 南通友联数码技术开发有限公司 | Ultrasonic pipe wall thickness measuring device |
| CN108317980A (en) * | 2018-01-15 | 2018-07-24 | 西安工业大学 | A kind of taper thin-wall revolving body thickness measuring system and its method |
| CN111174739A (en) * | 2019-12-25 | 2020-05-19 | 南京理工大学 | Device and method for measuring thickness of free-form surface at any point |
| CN211651545U (en) * | 2020-02-27 | 2020-10-09 | 成都飞机工业（集团）有限责任公司 | Online detection ultrasonic thickness measuring device |
-
2020
- 2020-12-31 CN CN202011641852.0A patent/CN112815886A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000009461A (en) * | 1998-06-19 | 2000-01-14 | Kawasaki Steel Corp | Apparatus for measuring pipe wall thickness and pipe wall thickness measuring method using the same |
| CN101614533A (en) * | 2008-06-26 | 2009-12-30 | 中国科学院金属研究所 | A kind of energy accurately measuring thickness of ultrathin workpieces method and instrument |
| CN103278114A (en) * | 2013-06-07 | 2013-09-04 | 南通友联数码技术开发有限公司 | Ultrasonic pipe wall thickness measuring device |
| CN108317980A (en) * | 2018-01-15 | 2018-07-24 | 西安工业大学 | A kind of taper thin-wall revolving body thickness measuring system and its method |
| CN111174739A (en) * | 2019-12-25 | 2020-05-19 | 南京理工大学 | Device and method for measuring thickness of free-form surface at any point |
| CN211651545U (en) * | 2020-02-27 | 2020-10-09 | 成都飞机工业（集团）有限责任公司 | Online detection ultrasonic thickness measuring device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117570867A (en) * | 2024-01-16 | 2024-02-20 | 珠峰线缆有限公司 | Dimension inspection equipment for cable manufacturing |
| CN117570867B (en) * | 2024-01-16 | 2024-03-26 | 珠峰线缆有限公司 | Dimension inspection equipment for cable manufacturing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109060966B (en) | Automatic calibrating device for ultrasonic transducer | |
| CN110068422B (en) | Quick automatic detection verifying attachment of bluetooth digital pressure table | |
| CN111811450A (en) | Three-dimensional coordinate measuring instrument for surface of sea pipe | |
| CN111580460A (en) | Error detection system and error detection and compensation method of five-axis machine tool | |
| CN112815886A (en) | Wall thickness measuring system for thin-wall revolving body workpiece | |
| CN207881960U (en) | Wheel hub hill detecting system | |
| CN115415786A (en) | Man-machine cooperation turbofan engine core machine assembling system and assembling method | |
| CN115415785A (en) | Assembling system and assembling method for core machine of turbofan engine | |
| CN108168908A (en) | Wheel hub hill detecting system | |
| CN212071692U (en) | Flexible white automobile body workpiece placing table | |
| CN112050703A (en) | Automatic detection equipment for jump degree of chuck | |
| CN112747192A (en) | Ultrasonic internal detection probe follow-up support | |
| CN110986799A (en) | Water pump flange and impeller detection equipment | |
| CN212320665U (en) | Three-dimensional coordinate measuring instrument for surface of sea pipe | |
| CN113252213A (en) | Thermal resistance testing device | |
| CN113188423A (en) | Positioning device and detection system for detecting symmetry degree of radial hole of axial part | |
| CN112223176A (en) | Manometer casing assembly fixture | |
| CN220473404U (en) | Annular welding seam detection device | |
| CN219337464U (en) | Flatness detection device | |
| CN218724989U (en) | Pressure sensor test equipment | |
| CN219776573U (en) | Quick measuring device of special-shaped shaft welding piece | |
| CN214384306U (en) | Probe follow-up device for ultrasonic internal detection | |
| CN219054104U (en) | Mounting fixture for wireless test | |
| CN212539013U (en) | Automatic detection equipment for jump degree of chuck | |
| CN117030153B (en) | Battery testing tool, use method and control method of battery testing tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210518 |