CN108340300A - Thin wall special-shaped tube wave peak maximum wall thickness measuring positioning device and its localization method - Google Patents
Thin wall special-shaped tube wave peak maximum wall thickness measuring positioning device and its localization method Download PDFInfo
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- CN108340300A CN108340300A CN201810175184.3A CN201810175184A CN108340300A CN 108340300 A CN108340300 A CN 108340300A CN 201810175184 A CN201810175184 A CN 201810175184A CN 108340300 A CN108340300 A CN 108340300A
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- positioning device
- thickness measuring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/08—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness
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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
- 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
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
Abstract
The invention discloses a kind of thin wall special-shaped tube wave peak wall thickness measuring positioning device and its localization method, thin wall special-shaped tube wave peak wall thickness measuring positioning device includes support beam body, for the tube chamber across thin wall special-shaped pipe;Inner support locating rod, bottom end is positioned by fixed seat in support beam body, the outer diameter of the inner support locating rod is less than the internal diameter of the wave crest inner cavity on the thin wall special-shaped pipe side wall, the length of the inner support locating rod is more than the depth of the wave crest inner cavity, and the top of the inner support locating rod is equipped with the support portion on the inner wall vertex for being used to support the wave crest.The present invention has the advantages of easy to operation, to improve measurement precision.
Description
Technical field
The present invention relates to technical fields of mechanical processing, are used more particularly to a kind of thin wall special-shaped tube wave peak maximum wall thickness measuring
Positioning device and its localization method.
Background technology
As shown in Figure 1a, 3 center of thin wall special-shaped pipe to be measured is equipped with tube chamber, and wave crest 14 is located at the thin wall special-shaped pipe
On 3 outer wall, the inner cavity of wave crest 14 is connected with the tube chamber.
The previous 14 vertex wall thickness of wave crest for measuring thin wall special-shaped pipe 3 is to measure wave with wall thickness micrometer gauge before its forming
The wall thickness of peak position vehicle strip, but the special-shaped part of special pipe can be by larger stress in forming process, and wall thickness can occur
Certain variation, therefore pipe measurement data is no longer applicable in.With contact by destroying the method for forming part, then divided with wall thickness thousand
Ruler measures.
After part shapes, since bulk is smaller in the wave crest 14 of thin wall special-shaped pipe 3, measuring instrument can not
Measured position is directly contacted, therefore, the vertex wall thickness measuring of the wave crest 14 of thin wall special-shaped pipe 3 is always a difficulty after molding
Topic.
Invention content
The purpose of the present invention is be not easy to measure for the wave crest vertex wall thickness of thin wall special-shaped pipe existing in the prior art
Problem, and a kind of thin wall special-shaped tube wave peak wall thickness measuring positioning device is provided, to be measured using three coordinate measuring machine sampling site,
To which wall thickness be calculated.
It is another object of the present invention to space in the wave crest vertex for thin wall special-shaped pipe existing in the prior art is small, thousand
The problem of dividing ruler to be not easy wall-thickness measurement, and a kind of localization method of thin wall special-shaped tube wave peak wall thickness measuring positioning device is provided,
To utilize the wall thickness of three coordinate measuring engine measurement wave crest.
The technical solution adopted to achieve the purpose of the present invention is:
A kind of thin wall special-shaped tube wave peak maximum wall thickness measuring positioning device, including:
Beam body is supported, for the tube chamber across thin wall special-shaped pipe;
Inner support locating rod, bottom end are positioned by fixed seat in support beam body, and the outer diameter of the inner support locating rod is small
The length of internal diameter in the wave crest inner cavity on the thin wall special-shaped pipe side wall, the inner support locating rod is more than the wave crest inner cavity
Depth, the top of the inner support locating rod is equipped with the support portion on the inner wall vertex for being used to support the wave crest.
The inner support locating rod coordinates supporting beam for matching the wave crest inner cavity stretched on the thin wall special-shaped pipe side wall
Body realizes the positioning to the thin wall special-shaped pipe.
In the above-mentioned technical solutions, the support portion is sphere, and the sphere forms branch to the vertex of the wave crest inner cavity
Support.
In the above-mentioned technical solutions, the inner support locating rod includes concentric sequentially connected lower cylindrical bar, round platform, circle
Bore cylinder, upper cylindrical bar and the sphere.
In the above-mentioned technical solutions, the outer diameter of the upper cylindrical bar is less than the sphere diameter, and length is more than the wave crest
The depth of inner cavity;The top outer diameter of the conical cylinder is identical as the outer diameter of upper cylindrical bar, and bottom end outer diameter is less than the circle
The outer diameter of platform, the outer diameter of the round platform are more than the outer diameter of the lower cylindrical bar, and the lower cylindrical bar is clamped with the fixed seat
Cooperation.
In the above-mentioned technical solutions, the fixed seat is scroll chuck.
In the above-mentioned technical solutions, the scroll chuck includes chuck body and is driven by claw driving mechanism to clamp or open
Three claws opened.
In the above-mentioned technical solutions, the axial line that fixed seat is connect with inner support locating rod and plane perpendicular degree 0.005mm.
In the above-mentioned technical solutions, the support beam body is square tube construction.
In the above-mentioned technical solutions, the tube wall of the support beam body is equipped with hole position.
In the above-mentioned technical solutions, support beam body the upper and lower faces depth of parallelism 0.005mm, flatness 0.005mm.
The localization method of thin wall special-shaped tube wave peak maximum wall thickness measuring positioning device, includes the following steps:
Step 1, the bottom end of inner support locating rod is clamped in the fixed seat, the fixed seat is placed in the support
The top of beam body;
Step 2, support beam body passes through the tube chamber of the thin wall special-shaped pipe, inner support locating rod to extend into the wave crest
Intracavitary, the positioning region form wave crest inner wall vertex and support.
A kind of Three-coordinate measurer for measuring thin wall special-shaped tube wave peak maximum wall thickness, including:
Three-dimensional coordinates measurement workbench, top are fixed with identical first isometry block of height and the second isometry block;
Three coordinate gauge heads, are used to measure measured object;
Mobile mechanism makes above-mentioned three coordinates gauge head move;
Control device controls above-mentioned mobile mechanism;
Thin wall special-shaped pipe detent mechanism, including,
Beam body is supported, the tube chamber of the thin wall special-shaped pipe is may pass through, the both ends of the support beam body are individually positioned in first
The top of isometry block and the second isometry block is to form support positioning;
Inner support locating rod:Bottom end is positioned by fixed seat in support beam body, and the outer diameter of the inner support locating rod is small
Internal diameter in the wave crest inner cavity on the thin wall special-shaped pipe side wall, the length of the inner support locating rod are more than the length of the wave crest
Degree, the top of the inner support locating rod are equipped with the support portion for being used to support wave crest inner wall vertex.
In the above-mentioned technical solutions, first isometry block and the second isometry block are V-block, above and below the V-block
Face is equipped with the faces V.
In the above-mentioned technical solutions, the V-block upper and lower faces depth of parallelism 0.005mm, flatness 0.005mm, it is left and right
Two sides depth of parallelism 0.005mm, flatness 0.005mm.
The measurement method of thin wall special-shaped tube wave peak maximum wall thickness, includes the following steps:
Step 1, it positions:The bottom end of inner support locating rod is clamped in the fixed seat, the fixed seat is placed in institute
State the top of support beam body;
Step 2, support beam body passes through the tube chamber of the thin wall special-shaped pipe, and both ends are placed in the first isometry block and the second isometry block
On, by thin wall special-shaped pipe slant setting so that support portion is exposed, and using support portion vertex as measurement point, three coordinates, three coordinate is surveyed
Head measures and obtains the first point coordinates X0Y0Z0;
Step 3, keep thin wall special-shaped pipe detent mechanism position constant, by thin wall special-shaped Guan Fangzheng so that inner support positions
Bar enters in wave crest, and the positioning region forms wave crest inner wall vertex and supports, and using wave crest outer dead centre as measurement point, measures the
Two point coordinates X0Y0Z1, it is tested wall thickness t=| Z1-Z0|。
Compared with prior art, the beneficial effects of the invention are as follows:
1. the localization method of the present invention, which is different from such as wall thickness micrometer gauge in the prior art, measures thin wall special-shaped pipe pipe
Wall thickness, the present invention is the direct wall thickness for measuring thin wall special-shaped tube wave peak maximum, and measurement result is relatively reliable.
2. the wave crest wall thickness measuring positioning device of the present invention, comprehensive with sphere vertex simulation thin wall special-shaped tube wave peak inner wall
Bridge architecture positioning method is closed, efficiently solves that space in wave crest is small, measures time-consuming and laborious problem so that the survey of wave crest wall thickness
Measure simpler, reduction operation difficulty.
3. the present invention foundation is provided to the structure design and process optimization of positioning device, also for assessment product quality and plus
Work consistency, stability, provide foundation.
4. it is simple in structure, manufacture craft is simple, it is convenient for industrial application.
Description of the drawings
Fig. 1 a are the structural schematic diagram of thin-wall special-shaped pipe.
Fig. 1 b are thin-wall special-shaped tube wave peak maximum wall thickness measuring schematic diagram;
Fig. 2 show the enlarged drawing of A in Fig. 1 b;
The schematic diagram of Fig. 3 inner support locating rods;
Fig. 4 isometry block front views;
Fig. 5 isometry block vertical views;
Fig. 6 scroll chuck front views;
Fig. 7 scroll chuck vertical views;
Fig. 8 supports beam body front view;
Fig. 9 supports beam body left view.
Wherein:1- three-dimensional coordinates measurement workbench, the first isometry blocks of 2-, 3- thin wall special-shaped pipes, 4- support beam body, 5- inner supports
Locating rod, 6- fixed seats, the second isometry blocks of 7-, tri- coordinate gauge heads of 8-, 9- spheres, the upper cylindrical bars of 10-, 11- conical cylinders, 12-
Round platform, cylindrical bar under 13-, 14- wave crests, 15-V type blocks, the faces 16-V, 17- chuck bodies, 18- claws, the holes 19- position.
Specific implementation mode
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.It should be appreciated that described herein
Specific embodiment be only used to explain the present invention, be not intended to limit the present invention.
Embodiment 1
As shown, a kind of thin wall special-shaped tube wave peak maximum wall thickness measuring positioning device, including:
Beam body 4 is supported, for the tube chamber across thin wall special-shaped pipe 3;
Inner support locating rod 5:Bottom end is positioned by fixed seat 6 in support beam body 4, outside the inner support locating rod 5
Diameter is less than the internal diameter of 14 inner cavity of wave crest on 3 side wall of thin wall special-shaped pipe, and the length of the inner support locating rod 5 is more than described
The length of wave crest 14, the top of the inner support locating rod 5 are equipped with the support portion on the inner wall vertex for being used to support the wave crest 14.
The inner support locating rod 5 stretches into 14 inner cavity of wave crest on 3 side wall of thin wall special-shaped pipe, cooperation support beam body 4
Realize the positioning to the thin wall special-shaped pipe 3.
It is preferred that the support portion is sphere 9, when positioning, the sphere 9 was to the vertex inner wall of the wave crest 14
Form support.The measurement point in simulation 8 flat segments of wave crest had not only been convenient on the vertex of sphere 9, but also can realize good support positioning.
It is preferred that the inner support locating rod 5 include concentric sequentially connected lower cylindrical bar 13, round platform 12,
Conical cylinder 11, upper cylindrical bar 10 and the sphere 9.
It is preferred that the outer diameter of the upper cylindrical bar 10 is less than 9 diameter of the sphere, length is more than the wave crest 14
The depth of inner cavity;The top outer diameter of the conical cylinder 11 is identical as the outer diameter of the upper cylindrical bar 1, and bottom end outer diameter is less than described
The outer diameter of round platform 12, the outer diameter of the round platform 12 are more than the outer diameter of the lower cylindrical bar 13, the lower cylindrical bar 13 with it is described
6 clamping engagement of fixed seat.
Inner support locating rod 5 enters in thin wall special-shaped pipe 14, and 9 vertex of sphere supports in the wave crest 14 of thin wall special-shaped pipe 3
Wall vertex, 9 diameter of sphere are less than 14 intracavity diameter of wave crest, and 10 diameter of upper cylindrical bar being connected with sphere 9 is less than 9 diameter of sphere,
It is not exposed to measured piece to ensure to measure upper cylindrical bar 10, and ensures that upper cylindrical bar 10 is indeformable, the length of upper cylindrical bar 10 is big
In the cavity length of thin wall special-shaped pipe 14,12 diameter of round platform is maximum, is contacted with 6 end face of fixed seat, can prevent cylindrical bar 10 from shaking
It is dynamic, lower cylindrical bar 13 and 6 clamping engagement of fixed seat.
It is preferred that the fixed seat 6 is scroll chuck.
It is preferred that the scroll chuck includes chuck body 17 and is driven by claw driving mechanism to clamp or open
Three claws 18.After chuck clamps lower cylindrical bar 13, the sum of axial overall size and 4 height of support beam body and isometry block height
More than tested 3 lumen diameter of thin wall special-shaped pipe, reaches thin wall special-shaped pipe 3 and be supported simultaneously vacantly, scroll chuck should meet GB/
T4346-2008 standards.
It is preferred that axial line and plane perpendicular degree 0.005mm that fixed seat 6 is connect with inner support locating rod 5.Axis
For heart line to the distance of bottom surface, maximum appearance and size should be less than 14 lumen diameter of thin wall special-shaped pipe, and be easy to different from thin-walled to be measured
It is picked and placeed inside shape pipe 14.
It is preferred that the support beam body 4 is square tube construction.
It is preferred that the tube wall of the support beam body 4 is equipped with hole position 19.The setting of the hole position 19, convenient for ensureing
Rectangular tube keeps horizontal,
It is preferred that the support beam body 4 upper and lower faces depth of parallelism 0.005mm, flatness 0.005mm.With it is contour
Block coordinates, as a bridge, by thin wall special-shaped pipe 3 through on bridge among internal diameter, this structure can consolidate support fixed seat and
The weight of part, cylindrical bar, and support device can be touched to avoid 3 tube wall of thin wall special-shaped pipe.Support the length of beam body 4 preferred
For the sum of the length of thin wall special-shaped pipe 3 and two contour block lengths.
Embodiment 2
The localization method of thin wall special-shaped tube wave peak maximum wall thickness measuring positioning device, includes the following steps:
Step 1, the bottom end of inner support locating rod 5 is clamped in the fixed seat 6, the fixed seat 6 is placed in described
Support the top of beam body 4;
Step 2, support beam body 4 passes through the tube chamber of the thin wall special-shaped pipe 3, inner support locating rod 5 to extend into the wave
In peak 14, the positioning region forms 14 inner wall vertex of the wave crest and supports.
Embodiment 3
As shown, a kind of Three-coordinate measurer for testing thin wall special-shaped tube wave peak maximum wall thickness, including:
Three-dimensional coordinates measurement workbench 1, top are fixed with identical first isometry block, 2 and second isometry block 7 of height;
Three coordinate gauge heads 2, are used to measure measured object;Mobile mechanism makes above-mentioned three coordinates gauge head 2 move;Control
Device controls above-mentioned mobile mechanism;
Thin wall special-shaped pipe detent mechanism as described in Example 1, including,
Beam body 4 is supported, may pass through the tube chamber of the thin wall special-shaped pipe 3, the both ends of the support beam body 4 are individually positioned in the
The top of one isometry block 2 and the second isometry block 7 is to form support positioning;
Inner support locating rod 5:Bottom end is positioned by fixed seat 6 in support beam body 4, outside the inner support locating rod 5
Diameter is less than the internal diameter of 14 inner cavity of wave crest on 3 side wall of thin wall special-shaped pipe, and the length of the inner support locating rod 5 is more than described
The length of wave crest 14, the top of the inner support locating rod 5 are equipped with the support portion for being used to support 14 inner wall vertex of the wave crest.
It is preferred that first isometry block, 2 and second isometry block 7 is V-block 15, above and below the V-block
Face is equipped with the faces V 16.
It is preferred that the V-block upper and lower faces depth of parallelism 0.005mm, flatness 0.005mm, left and right two sides
Depth of parallelism 0.005mm, flatness 0.005mm.First isometry block, 2 and second isometry block, the 7 available standards V-block, standard V-type
Block should meet JB/T8047-95 standards.
Embodiment 4
The measurement method of thin wall special-shaped tube wave peak maximum wall thickness, includes the following steps:
Step 1, it positions:The bottom end of inner support locating rod 5 is clamped in the fixed seat 6, the fixed seat 6 is placed in
The top of the support beam body 4;
Step 2, support beam body 4 passes through the tube chamber of the thin wall special-shaped pipe 3, and both ends are placed in first isometry block 2 and second etc.
On high block 7, by 3 slant setting of thin wall special-shaped pipe so that support portion is exposed, using support portion vertex as measurement point, three coordinates three
The measurement of coordinate gauge head 8 obtains the first point coordinates X0Y0Z0;
Step 3, it keeps thin wall special-shaped pipe detent mechanism position constant, thin wall special-shaped pipe 3 is put just so that inner support positions
Bar enters in wave crest 14, and the positioning region forms 14 inner wall vertex of wave crest and supports, using 14 outer dead centre of wave crest as measurement point,
Measure the second point coordinates X0Y0Z1, it is tested wall thickness t=| Z1-Z0|。
Specifically:
Two isometry blocks are placed on the table, and the distance on the inside of two isometry blocks is slightly larger than the length of thin wall special-shaped pipe 3,
Part axial is parallel with workbench, it is placed between two isometry blocks.
Using the bottom end of 6 clamping band inner support locating rod 5 of fixed seat, inner support locating rod 5 is disposed vertically, and fixed seat 6 is put
In support 4 upper intermediate part of beam body.
Operate co-ordinate measuring machine abnormity vertex X outside part0Y0Position touches survey piece surface downwards, obtains the second point coordinates
X0Y0Z1,
Beam body 4 is supported to pass through the tube chamber of the thin wall special-shaped pipe 3, both ends are placed in the first isometry block 2 and the second isometry block 7
On, by 3 slant setting of thin wall special-shaped pipe so that support portion is exposed, and the sphere 9 of cylindrical bar sphere 5 is used as measurement point, simulation tested
The vertex of the wave crest 14 of thin wall special-shaped pipe 3, three coordinate gauge head 8 first from top to bottom measure sampling site in sphere vertex position, when three seats
When mapping head 8 touches sphere 9, the first point coordinates X is obtained0Y0Z0;Then thin wall special-shaped pipe 3 is placed, by tested thin wall special-shaped pipe
3 wave crests 14 are placed on sphere vertex, are clamped two isometry blocks, and ensure that thin wall special-shaped pipe 3 is motionless, are fixed thin wall special-shaped pipe
3, operation co-ordinate measuring machine abnormity vertex X outside part0Y0Position touches survey piece surface downwards, obtains the second point coordinates X0Y0Z1, quilt
Survey wall thickness t=| Z1-Z0|。
The above is only a preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (11)
1. a kind of thin wall special-shaped tube wave peak maximum wall thickness measuring positioning device, which is characterized in that including:
Beam body is supported, for the tube chamber across thin wall special-shaped pipe;
Inner support locating rod, bottom end are positioned by fixed seat in support beam body, and the outer diameter of the inner support locating rod is less than institute
The internal diameter of the wave crest inner cavity on thin wall special-shaped pipe side wall is stated, the length of the inner support locating rod is more than the depth of the wave crest inner cavity
Degree, the top of the inner support locating rod are equipped with the support portion on the inner wall vertex for being used to support the wave crest.
2. a kind of thin wall special-shaped tube wave peak maximum as described in claim 1 wall thickness measuring positioning device, which is characterized in that institute
It is sphere to state support portion, and the sphere forms support to the vertex of the wave crest inner cavity.
3. a kind of thin wall special-shaped tube wave peak maximum as claimed in claim 2 wall thickness measuring positioning device, which is characterized in that institute
It includes concentric sequentially connected lower cylindrical bar, round platform, conical cylinder, upper cylindrical bar and the ball to state inner support locating rod
Body.
4. a kind of thin wall special-shaped tube wave peak maximum as claimed in claim 3 wall thickness measuring positioning device, which is characterized in that institute
The outer diameter for stating cylindrical bar is less than the sphere diameter, and length is more than the depth of the wave crest inner cavity;The top of the conical cylinder
Hold outer diameter identical as the outer diameter of upper cylindrical bar, bottom end outer diameter is less than the outer diameter of the round platform, and the outer diameter of the round platform is more than
The outer diameter of the lower cylindrical bar, the lower cylindrical bar and the fixed seat clamping engagement.
5. a kind of thin wall special-shaped tube wave peak maximum as described in claim 1 wall thickness measuring positioning device, which is characterized in that institute
It is scroll chuck to state fixed seat.
6. a kind of thin wall special-shaped tube wave peak maximum as claimed in claim 5 wall thickness measuring positioning device, which is characterized in that institute
Scroll chuck is stated to include chuck body and drive three claws to clamp or open by claw driving mechanism.
7. a kind of thin wall special-shaped tube wave peak maximum as described in claim 1 wall thickness measuring positioning device, which is characterized in that Gu
The axial line that reservation is connect with inner support locating rod and plane perpendicular degree 0.005mm.
8. a kind of thin wall special-shaped tube wave peak maximum as described in claim 1 wall thickness measuring positioning device, which is characterized in that institute
It is square tube construction to state support beam body.
9. a kind of thin wall special-shaped tube wave peak maximum as described in claim 1 wall thickness measuring positioning device, which is characterized in that institute
The tube wall for stating support beam body is equipped with hole position.
10. a kind of thin wall special-shaped tube wave peak maximum as described in claim 1 wall thickness measuring positioning device, which is characterized in that
Support beam body the upper and lower faces depth of parallelism 0.005mm, flatness 0.005mm.
11. a kind of localization method of thin wall special-shaped tube wave peak maximum as described in claim 1 wall thickness measuring positioning device,
It is characterized in that, includes the following steps:
Step 1, the bottom end of inner support locating rod is clamped in the fixed seat, the fixed seat is placed in the support beam body
Top;
Step 2, support beam body passes through the tube chamber of the thin wall special-shaped pipe, inner support locating rod to extend into the wave crest inner cavity
Interior, the positioning region forms wave crest inner wall vertex and supports.
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CN111854665A (en) * | 2019-04-29 | 2020-10-30 | 核工业理化工程研究院 | Wave crest wall thickness measuring and positioning device and measuring method for concave thin-wall special-shaped pipe |
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