CN1299714A - Tubular measuring device - Google Patents
Tubular measuring device Download PDFInfo
- Publication number
- CN1299714A CN1299714A CN 01101792 CN01101792A CN1299714A CN 1299714 A CN1299714 A CN 1299714A CN 01101792 CN01101792 CN 01101792 CN 01101792 A CN01101792 A CN 01101792A CN 1299714 A CN1299714 A CN 1299714A
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- main guide
- guide pipe
- pipe
- measuring device
- lever
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 27
- 239000010959 steel Substances 0.000 claims abstract description 27
- 238000006073 displacement reaction Methods 0.000 claims abstract description 19
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000013480 data collection Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000001066 destructive effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012372 quality testing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
A tubular measuring device is composed of a support, a main guide pipe, an inner surface measuring mechanism, a displacement sensor and a computer. The support (2) is arranged on a chuck and a center frame of a lathe, and the steel pipe to be measured (4) is fixed between the two supports. The main guide pipe (1) is matched with the support in a sliding way and is connected with the tool rest (15). A measuring mechanism comprising an inner surface displacement sensor (12) is mounted within the main guide tube, the outer surface displacement sensor being connected to a computer and system. The invention is used for detecting the wall thickness of the seamless steel tube and has the advantages of simple structure, convenient operation, high measurement precision and the like.
Description
The invention belongs in the seamless steel tube production process instrument to tubular mass measurement, more particularly, relate to a kind of seamless steel pipe wall thickness accuracy laterally, vertical measurement mechanism.
The wall thickness accuracy of the production process middle tube body of hot rolled seamless steel tube, the particularly horizontal uniformity coefficient of wall thickness are one of tube quality very important index.Often need adjust rolling technological parameter for the wall thickness accuracy that improves hollow forging, therefore, tubular measurement is absolutely necessary.In the long-term production practice, people have constantly proposed some measuring methods, as: " laser one ultrasonic measurement system " of (1) German Man Naisiman Steel tube Co., Ltd development, it is to produce ultrasonic wave by pulse laser, measuring object thickness by interfering, is a kind of non-contact measurement.This method is just in the experimental stage, also not commercialization.This non-contact measurement not only has its application limit, and system is huge, complex structure, cost an arm and a leg; (2) " sonigauge ", domestic a large amount of at present portable supersonic calibrators that use.This method generally is used for the thickness measure of steel plate.When being used for the measurement of steel pipe, there is the low problem of precision.Mainly be because the steel pipe profile is a cylinder, ultrasonic meter is difficult to accurately locate along the normal direction of tube-surface, and certain angular deviation is arranged a little, will cause bigger measure error; (3) destructive test method is a kind of manual measurement method that generally use at present steel pipe's production scene at home.It according to the certain size segmentation, along laterally dissecting into some equal pipeline sections, is done tested body the branch chi with wall thickness the pipeline section wall thickness is measured, and calculates average thickness again.This method is not only taken a lot of work but also time-consuming, also inaccuracy.It belongs to destructive detection method, and the tubing after the measurement can not utilize again.
The objective of the invention is in order to overcome the shortcoming that above-mentioned existing dissimilar measuring methods exist, a kind of pipe profile measuring device is proposed, it has reasonable in design, simple in structure, easy to operate, low price, certainty of measurement height, does not destroy the advantage of tubing, is applicable to the tubular quality testing of seamless steel pipe.
The present invention is achieved through the following technical solutions its purpose.A kind of pipe profile measuring device is made up of bearing, main guide pipe and inner surface measuring mechanism, displacement transducer, computer four parts.Two bearings are installed in respectively on the chuck and centre frame of engine lathe, about tested steel pipe is packed between two bearings, main guide pipe penetrates the lathe spindle hole and is slidingly matched with the endoporus of bearing, links together with lathe saddle again by traction handle and assistant support; The inner surface measuring mechanism is installed in the main guide pipe, it be by be fixed on lever in the main guide pipe, vertically be installed on the main guide pipe and abut against tested steel pipe internal-surface interior chaining pin, be positioned on the lever and and constitute by the inner surface displacement transducer that assistant support links to each other with lathe saddle; The outer surface displacement transducer is positioned on the outer surface of tested steel pipe and with lathe saddle and is connected.For chaining pin in making and inner surface are close to, press-fit a spring at the tail end of interior chaining pin, spring places again in the thread bush, and thread bush is threaded with the tube wall of main guide pipe.In order to make the inner surface displacement transducer that is positioned on the lever, the detected surface of chaining pin height situation in truly reflecting, lever is that vertically the tube wall with main guide pipe is fixed together with an axle, between axle and the lever bearing is installed.Inner surface displacement transducer, outer surface displacement transducer by A/D converter input computer data acquisition system, can obtain the height variable signal of the steel pipe surfaces externally and internally of gained tubular delta data, and can be presented on the screen.
The present invention compared with prior art because the sensitivity of displacement transducer is 700mv/mm, can be reflected into the micron order error, the experiment proved that measure in 0-3m, system's worst error has only 0.03mm, so the certainty of measurement height.Because device is rotation and feeding system by means of engine lathe, general workman all can operate, and computer system has intuitively, friendly interface, only needs can finish surveying work by enter key, and therefore operation is very easy.Because the reasonable setting of surfaces externally and internally displacement transducer, make when lathe chuck drives the rotation of tested steel pipe, can obtain the measurement data of thickness of steel pipe in the same cross section, vertically moving of knife rest can obtain steel pipe thickness error longitudinally, and be therefore reasonable in design, simple in structure.The present invention also has low cost of manufacture, low price, does not destroy the advantage of steel pipe in addition.It is the comparatively ideal instrument that detects tubular quality in the seamless steel tube production.
Below by embodiment, further be illustrated in conjunction with the accompanying drawings.
Fig. 1 is main organigram of the present invention (part is main looks);
Fig. 2 is a structure vertical view of the present invention;
Fig. 3 is the data collection computer system block diagram.
As shown in Figure 1, 2, 3, a kind of pipe profile measuring device is made up of bearing, main guide pipe and inner surface measuring mechanism, displacement transducer, computer four parts.Two bearings 2 are installed in respectively on the chuck 14 and centre frame 13 of engine lathe, and between two bearings 2, levelling screw 3 (can establish 4 on each bearing) makes the measured tube axis parallel with the lathe orbit plane to tested steel pipe 4 usefulness about the screw on the bearing 3 is packed into.Main guide pipe 1 is longer, can penetrate in the lathe spindle hole, and the endoporus of it and bearing 2 is slidingly matched, and main guide pipe 1 is fixed together with the knife rest 15 of lathe again by traction handle 16 and assistant support 17.The inner surface measuring mechanism is installed in the main guide pipe 1, it be by be fixed on lever 9 in the main guide pipe 1, be vertically mounted on the main guide pipe 1 and abut against the inner surface of tested steel pipe 4 interior chaining pin 8, be positioned on the lever 9 and the inner surface displacement transducer 12 that is connected with lathe saddle 15 by secondary knife rest 17 constitutes.Interior chaining pin 8 and the installation of main guide pipe 1 are to be threaded to tube wall with leading by a thread bush 6, and the built-in compression spring 7 of thread bush is fitted in the tail end of interior chaining pin 8 on the spring 7, and like this, interior chaining pin 8 just abuts in the inner surface of measured tube tightly.The connected mode of lever 9 and main guide pipe 1 is to adopt axle 11 vertically to be fixed together with tube wall, between axle and the lever bearing 10 is housed.Outer surface displacement transducer 5 is positioned on the outer surface of tested steel pipe 4, and is connected with lathe saddle 15.Sensor 5 should be guaranteed during connection with the surfaces externally and internally height change signal that is obtained,, tubular delta data can be obtained by A/D converter input data collection computer system.
The course of work of the present invention:
At first tested pipe fitting, two displacement transducers etc. is in place, connects the Computer signal circuit by the said structure relation;
Start lathe then and make main axis rotation, can obtain steel pipe transverse wall thickness change data;
Stop main axis rotation, mobile lathe saddle can obtain the vertical wall thickness data of steel pipe;
Main axis rotation, follow rest can obtain steel tube body wall thickness change data.
Claims (5)
1, a kind of pipe profile measuring device is characterized in that: it is by being installed on engine lathe chuck (14) and the centre frame (13), and connects the bearing (2) of tested steel pipe (4); Penetrate the lathe spindle hole and the bearing endoporus is slidingly matched, and the main guide pipe (1) that is connected with lathe saddle; Be installed in the main guide pipe, draw, comprise the inner surface measuring mechanism of inner surface displacement transducer (12) by knife rest (15); Be positioned at the outer surface of measured tube (4) and the outer surface displacement transducer (5) that is connected with knife rest (15); And the computer system that connects inside and outside surface displacement sensor constitutes.
2, according to the described pipe profile measuring device of claim 1, it is characterized in that: described main guide pipe (1) links together with knife rest (15) by traction handle (16) and assistant support (17).
3, according to the described pipe profile measuring device of claim 1, it is characterized in that: described inner surface measuring mechanism is by the lever (9) that is fixed in the main guide pipe (1), vertically be installed in main guide pipe (1) and go up and abut against the interior chaining pin (8) of measured tube (4) inner surface, be positioned at lever (9) and go up and pass through inner surface displacement transducer (12) formation that assistant support (17) is connected with knife rest (15).
4, according to the described pipe profile measuring device of claim 3, it is characterized in that: the tail end of chaining pin (8) press-fits spring (7) in described, and spring places in the thread bush (6), and thread bush is threaded with the tube wall of main guide pipe (1).
5, according to the described pipe profile measuring device of claim 3, it is characterized in that: described lever (9) is vertically to be fixed together with the tube wall of main guide pipe (1) with axle (11), between axle and the lever bearing (10) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01101792 CN1299714A (en) | 2001-01-05 | 2001-01-05 | Tubular measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01101792 CN1299714A (en) | 2001-01-05 | 2001-01-05 | Tubular measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1299714A true CN1299714A (en) | 2001-06-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01101792 Pending CN1299714A (en) | 2001-01-05 | 2001-01-05 | Tubular measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1299714A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106403770A (en) * | 2016-08-22 | 2017-02-15 | 内蒙古第机械集团有限公司 | Deep-pipe inner wall coating thickness measuring device |
-
2001
- 2001-01-05 CN CN 01101792 patent/CN1299714A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106403770A (en) * | 2016-08-22 | 2017-02-15 | 内蒙古第机械集团有限公司 | Deep-pipe inner wall coating thickness measuring device |
| CN106403770B (en) * | 2016-08-22 | 2019-11-01 | 内蒙古第一机械集团有限公司 | Deep inside pipe wall overburden cover measuring device |
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