CN2283228Y - External thread parameter non-contact automatic measurer - Google Patents
External thread parameter non-contact automatic measurer Download PDFInfo
- Publication number
- CN2283228Y CN2283228Y CN 97239415 CN97239415U CN2283228Y CN 2283228 Y CN2283228 Y CN 2283228Y CN 97239415 CN97239415 CN 97239415 CN 97239415 U CN97239415 U CN 97239415U CN 2283228 Y CN2283228 Y CN 2283228Y
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- light source
- external thread
- utility
- chromacoder
- model
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Abstract
The utility model relates to an external thread parameter contactless automatic measurer. The utility model conduct scanning of screw thread parts of a steel tube by scanning light beams sent out by a light source, a CCD photosensitive element and a driving module thereof of a signal switching device transmits scanning signals into a computer processing device, and detecting results of the scanning signals which are processed by high-speed computing and treatment can be quickly displayed and printed. The utility model overcomes multiple disadvantages caused by manual measurement of thread parameters and has the advantages of high measuring speed, high efficiency, wide range and reliable and accurate measurement, and the utility model is particularly suitable for a production line of manufacturing threads of the steel tube.
Description
The utility model relates to a kind of external thread parameter noncontact self-operated measuring unit, is mainly used in the automatic measurement of the external thread of petroleum casing pipe and the online noncontact of various needs, high-acruracy survey external thread parameters.
In petro chemical industry, because very high to the requirement of steel pipe screw connection point, thus require parameters such as the tooth depth of steel pipe screw thread, middle footpath, tapering are carried out accurate measurement, so that accurately judge the quality of the whether qualified and usability of product.Conventional detection relies on manually fully, promptly adopts in instruments such as calliper, proof-reading block and carries out manual measurement, record.Because the manual measurement program is many, speed is slow, on the production line of screw thread processing, it can only be inspected by random samples the partial parameters of product, not only efficient is low, poor reliability, be difficult to obtain accurately, reliable result, and easily cause the omission and the flase drop of product.
The purpose of this utility model is to avoid above-mentioned weak point of the prior art, and a kind of efficient height is provided, and sensing range is wide, detects accurately the external thread parameter noncontact self-operated measuring unit that reliability is high.
The purpose of this utility model can reach by following measure:
A kind of external thread parameter noncontact self-operated measuring unit comprises computer processor unit 14, and its special character is that it also comprises light source 20 and chromacoder 13 and drives the collection telecontrol equipment that it moves; Described light source 20 comprises luminophor 1 and the expansion light beam lens combination of being made up of concave, convex lens 2,3; Described chromacoder 13 comprises is located at the CCD photosensitive part 6 and 10 that light source 20 offsides receive its scanning light beam 4, and the driver module 7 of CCD photosensitive part 6,10; Described collection telecontrol equipment comprises the leading screw 18 that is connected with stepper motor 15 and is connected to leading screw 18 other ends, the planker 19 of light source 20 and chromacoder 13 is set that described planker 19 is located on the scanning guide rail 17 that is slidingly matched with it; One end of described scanning guide rail 17 is provided with the support 11 that steel pipe 5 and sensor 21 are set, and described stepper motor 15, sensor 21 and CCD driver module 7 are connected with computer processor unit 14 by transmission line.
Chromacoder 13 of the present utility model can comprise the knob 8 of regulating 6,10 distances of two CCD photosensitive parts.
Chromacoder 13 of the present utility model also can comprise the scale 9 of being located at two CCD photosensitive parts, 6,10 sides.
Light source 20 of the present utility model can comprise the knob 16 of adjusting its scanning light beam 4 and 6,10 angles of described CCD photosensitive part.
The accompanying drawing drawing is described as follows:
Fig. 1 is the structural representation of the utility model light source.
Fig. 2 is the structural representation of the utility model chromacoder.
Fig. 3 is an one-piece construction synoptic diagram of the present utility model.
The utility model is described in further detail below in conjunction with accompanying drawing:
The utility model is installed on the production line of steel pipe screw thread processing, adopt the vertical light scan mode that the steel pipe threaded portion is scanned, carrying out the automatic on-line noncontact by computing machine double thread parameters extracts, and carry out at a high speed, calculate accurately, handle, show, print measurement result at last.The utility model mainly is made of light source 20, chromacoder 13, collection telecontrol equipment and computer processor unit 14.Referring to Fig. 1, the utility model light source 20 comprises luminophor 1, and it can adopt the He-Ne laser instrument, and the light beam that is sent by luminophor 1 forms the parallel sweep light beam 4 of width greater than outer diameter of steel pipes after the lens combination that concavees lens 2, convex lens 3 are formed expands bundle.Referring to Fig. 2, chromacoder 13 comprises two the CCD light activated elements 6,10 and the driver module 7 thereof of the scanning light beam 4 that receives light source 20, CCD photosensitive part 6 and 10 is located at light source 20 offsides, during use, as if the model difference of the steel pipe of surveying, then at first according to the model of survey steel pipe, from operation instruction, look into and get corresponding L value, adjusting knob 8, making the distance of 6,10 of two CCD light activated elements is L, but L value accepted scale 9 is measured.Referring to Fig. 3, when using the utility model to detect, adjust chromacoder 13 earlier, pass through the angle of 6,10 of knob 16 adjustment scanning light beams 4 and CCD photosensitive parts again, the adjustment standard is not have under the situation of bias light, on CCD photosensitive part 6 and the CCD photosensitive part 10 signal is arranged all.After steel pipe 5 is placed on the support 11, give computer processor unit 14 1 enabling signals by the sensor of being located on the support 11 21, the stepper motor 15 that makes it in gathering telecontrol equipment sends step-by-step impulse, the ball-screw 18 of stepper motor 15 by being attached thereto, the planker 19 that drive is provided with light source 20 and chromacoder 13 moves to steel pipe 5 directions together, when unlike signal occurring for the first time on CCD photosensitive part 6 and the CCD photosensitive part 10, computer processor unit 14 starts its data acquisition system (DAS) image data.Data acquisition step is; The male thread portion 12 of steel pipe 5 is behind scanning light beam 4 vertical irradiations of width greater than steel pipe 5 diameters, its entity part is returned beam reflection, on the CCD of its offside photosensitive part 6,10, produce shade clearly respectively, will not have light signal on this part CCD photosensitive part 6,10; And width will continue to be radiated on the CCD photosensitive part 6,10 greater than the light beam 4 of steel pipe 5 diameters, and making on this part CCD photosensitive part has light signal.These two kinds of different signals are converted to electric signal through CCD photosensitive part 6,10, drive output by CCD driver module 7, by the data acquisition system (DAS) of computer processor unit 14, gather, handle.Computer processor unit 14 at first carries out binary conversion treatment with the signal that collects.Can accurately determine the border of signal thus, obtain the pixel number of shade, multiply by pixel dimension again, thereby obtain the size of direct-shadow image.Gained shade size L1, L2 on two CCD photosensitive parts 6,10 add the distance L value of 6,10 of two CCD photosensitive parts, are the diameter of this place's steel pipe threaded portion.Move to after next determines the position when gathering telecontrol equipment driving light source 20, chromacoder 13, repeat said process, obtain the diameter dimension of this place's steel pipe, to different parts is that screw thread peak, the groove of thread, each ridge two trisection points between Feng Hegu etc. are located acquired signal, after machine treating apparatus 14 calculating as calculated of gained diameter dimension, the processing, then can obtain all other parameters of screw thread.CCD photosensitive part of the present utility model can adopt line array CCD, as TCD141C, also can adopt area array CCD.
The utility model compared with prior art has following advantage:
1, can pursue at a high speed root, in terms by terms the steel tube screw thread parameter accurately be measured.
2, detect the precision height. Its synthesis precision can reach 0.002mm.
3, detection speed is fast. For example, φ 340, tooth number are 80 casing threads, from beginning to detect printing As a result, only need 40S, the time that this time is processed this kind steel tube screw thread less than production line, thereby to production line Continuous productive process do not have impact.
4, detection range is wide. Can detect the various thread form external screw threads of φ 10～φ 500 (mm).
5, accuracy in detection and reliability height, strong interference immunity, no randomness omission, mistake can not occur Inspection.
6, simple in structure, cost is low, and the automaticity height is easy and simple to handle.
Claims (4)
1, a kind of external thread parameter noncontact self-operated measuring unit, comprise computer processor unit (14), it is characterized in that: it also comprises light source (20) and chromacoder (13) and drives the collection telecontrol equipment that it moves; Described light source (20) comprises luminophor (1) and the expansion light beam lens combination of being made up of concave, convex lens (2), (3); Described chromacoder (13) comprises is located at CCD photosensitive part (6) and (10) that light source (20) offside receives its scanning light beam (4), reaches the driver module (7) of CCD photosensitive part (6), (10); Described collection telecontrol equipment comprises the leading screw (18) that is connected with stepper motor (15) and is connected to leading screw (18) other end, the planker (19) of light source (20) and chromacoder (13) is set that described planker (19) is located on the scanning guide rail (17) that is slidingly matched with it; One end of described scanning guide rail (17) is provided with the support (11) that steel pipe (5) and sensor (21) are set, and described stepper motor (15), sensor (21) and CCD driver module (7) all are connected with computer processor unit (14) by transmission line.
2, external thread parameter noncontact self-operated measuring unit as claimed in claim 1 is characterized in that: described chromacoder (13) comprises the knob (8) of regulating distance between two CCD photosensitive parts (6), (10).
3, external thread parameter noncontact self-operated measuring unit as claimed in claim 2, it is characterized in that: described chromacoder (13) comprises the scale (9) of being located at two CCD photosensitive parts (6), (10) side.
4, external thread parameter noncontact self-operated measuring unit as claimed in claim 1 or 2 is characterized in that: described light source (20) comprises the knob (16) of adjusting angle between its scanning light beam (4) and described CCD photosensitive part (6), (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97239415 CN2283228Y (en) | 1997-03-28 | 1997-03-28 | External thread parameter non-contact automatic measurer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97239415 CN2283228Y (en) | 1997-03-28 | 1997-03-28 | External thread parameter non-contact automatic measurer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2283228Y true CN2283228Y (en) | 1998-06-03 |
Family
ID=33949418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97239415 Expired - Fee Related CN2283228Y (en) | 1997-03-28 | 1997-03-28 | External thread parameter non-contact automatic measurer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2283228Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995218A (en) * | 2010-10-29 | 2011-03-30 | 苏州天准精密技术有限公司 | Image type screw thread template automatic detection instrument |
| CN102927910A (en) * | 2012-11-12 | 2013-02-13 | 黑龙江大学 | Device used for measuring external thread parameter of steel pipe |
| CN101981408B (en) * | 2008-03-27 | 2013-03-27 | 住友金属工业株式会社 | Device for measuring screw element at pipe end, system for measuring screw element and method for measuring screw element |
| CN101836071B (en) * | 2007-10-23 | 2013-04-03 | Gii采集有限责任公司,以总检测有限责任公司的名义营业 | Method for estimating thread parameters of a part |
| CN105293235A (en) * | 2015-10-09 | 2016-02-03 | 中国矿业大学 | Non-contact detection device and method for pitch circle diameter of steel wire rope for mining |
| CN107202544A (en) * | 2017-07-31 | 2017-09-26 | 深圳市欧视达自动化设备有限公司 | The detection means and detection method of a kind of screw rod |
| CN109141286A (en) * | 2018-09-18 | 2019-01-04 | 杭州博拉网络科技有限公司 | It is a kind of based on machine vision and to screw screw thread logical only detection method and the system of model |
| CN110631490A (en) * | 2019-09-04 | 2019-12-31 | 江苏理工学院 | Thread passing and stopping detection device and detection method |
| CN112013764A (en) * | 2020-08-19 | 2020-12-01 | 中车四方车辆有限公司 | Thread detection, imaging and identification equipment |
-
1997
- 1997-03-28 CN CN 97239415 patent/CN2283228Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101836071B (en) * | 2007-10-23 | 2013-04-03 | Gii采集有限责任公司,以总检测有限责任公司的名义营业 | Method for estimating thread parameters of a part |
| CN101981408B (en) * | 2008-03-27 | 2013-03-27 | 住友金属工业株式会社 | Device for measuring screw element at pipe end, system for measuring screw element and method for measuring screw element |
| CN101995218A (en) * | 2010-10-29 | 2011-03-30 | 苏州天准精密技术有限公司 | Image type screw thread template automatic detection instrument |
| CN101995218B (en) * | 2010-10-29 | 2012-07-04 | 苏州天准精密技术有限公司 | Image type screw thread template automatic detection instrument |
| CN102927910A (en) * | 2012-11-12 | 2013-02-13 | 黑龙江大学 | Device used for measuring external thread parameter of steel pipe |
| CN105293235A (en) * | 2015-10-09 | 2016-02-03 | 中国矿业大学 | Non-contact detection device and method for pitch circle diameter of steel wire rope for mining |
| CN107202544A (en) * | 2017-07-31 | 2017-09-26 | 深圳市欧视达自动化设备有限公司 | The detection means and detection method of a kind of screw rod |
| CN109141286A (en) * | 2018-09-18 | 2019-01-04 | 杭州博拉网络科技有限公司 | It is a kind of based on machine vision and to screw screw thread logical only detection method and the system of model |
| CN109141286B (en) * | 2018-09-18 | 2020-06-05 | 杭州博拉网络科技有限公司 | Thread passing and stopping detection method and system based on machine vision and screwing model |
| CN110631490A (en) * | 2019-09-04 | 2019-12-31 | 江苏理工学院 | Thread passing and stopping detection device and detection method |
| CN112013764A (en) * | 2020-08-19 | 2020-12-01 | 中车四方车辆有限公司 | Thread detection, imaging and identification equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |