CN103335602A - Multistation and multiparameter high precision measurement method and device of light curtain shaft part - Google Patents

Multistation and multiparameter high precision measurement method and device of light curtain shaft part Download PDF

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Publication number
CN103335602A
CN103335602A CN2013102863951A CN201310286395A CN103335602A CN 103335602 A CN103335602 A CN 103335602A CN 2013102863951 A CN2013102863951 A CN 2013102863951A CN 201310286395 A CN201310286395 A CN 201310286395A CN 103335602 A CN103335602 A CN 103335602A
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linear array
array ccd
measured
slit
axial workpiece
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CN2013102863951A
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CN103335602B (en
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周传德
黎泽伦
何高法
邓显玲
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Chongqing University of Science and Technology
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周传德
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Abstract

The invention discloses a multistation and multiparameter high precision measurement device of a light curtain shaft part, which comprises an electromechanical body and four measurement head devices, wherein each measurement head device comprises a support base (4) with a slide rail, slit LED (Light-emitting Diode) parallel light source and two linear array CCD (Charge Coupled Device) cameras (8); the brightness of the slit LED parallel light sources (3) is changed sinusoidally and regularly under the control of a computer; the slit LED parallel light sources (3) generate green parallel light with a low divergence angle; and the upper and lower edges of light spots generated due to the fact the parallel light is shielded by the shaft part (2) to be measured are acquired by the linear array CCD cameras (8). Since double CCD sensor probes measure the upper and lower edges, the measurement range is extended, and the measurement precision is improved. Due to multistation synchronous measurement, the measurement course is accelerated, and the requirement on a service environment is lowered.

Description

A kind of light veil type axial workpiece multistation multiparameter high-precision measuring method and device
Technical field
The present invention relates to diameter, tapering, the circularity of axial workpiece, detection, storage and the analysis of shape line, can be applicable to parameter detecting and the quality control of field axial workpieces such as automobile, motorcycle, lathe.
Background technology
Measure with the integrated of processing and fusion and become one of new development trend of Modern Manufacturing Technology.The total quality Detection ﹠ Controling are implemented to detect in real time to process and product performance index, and it is to guarantee product quality, realization " zero waste product manufacturing " that 100% of product (part) parameter detects, and realizes the basis that product quality problem is traced to the source.
The existing equipment that detects at axial workpiece of present manufacturing enterprise, the main two aspect problems that exist, the one, the restriction that is subjected to the automaticity difference and is subjected to service condition, detection efficiency is lower, mostly be used in the detection of sample survey and short run, can not realize that production scene large-scale application and real-time online detect, the 2nd, the checkout equipment function singleness, expensive, can not realize the test of extensive part performance.
Summary of the invention
Purpose of the present invention provides a kind of light veil type axial workpiece multistation multiparameter high-precision measuring method and device at the deficiencies in the prior art.
The present invention adopts following technical scheme:
A kind of light veil type axial workpiece multistation multiparameter high precision measuring device, comprise dynamo-electric body and 4 gauge head units, described gauge head unit comprises band slide rail base for supporting (4), slit LED source of parallel light (3) and two linear array CCD cameras (8), the parallel led light source of slit (3) sinusoidal regular brightness under computer control changes, slit LED source of parallel light (3) produces the green directional light of the low angle of divergence, being blocked the last lower limb that produces hot spot by axial workpiece to be measured (2) is gathered by two linear array CCD cameras (8), wherein slit LED source of parallel light (3) direction of illumination is vertical with linear array CCD camera (8) guide pass, and linear array CCD camera (8) optical axis is vertical with linear array CCD camera (8) guide pass; Two linear array CCD cameras (8) of each gauge head unit are along accurate straight line screw mandrel guide rail (13) move toward one another and locking; Axial workpiece to be measured (2) enters measured zone (5), press live centre (1) handle, axial workpiece (2) one ends to be measured are positioned over dead center (7), the other end is positioned near live centre (1) center, release handle, under live centre (1) spring force effect, axial workpiece to be measured (2) is installed in place, and begins to measure flow process; The virtual instrument (12) that is installed in industrial control computer (11) sends motion control instruction to servo-driver (9), drive axial workpiece to be measured (2) rotation by servo-driver (9) and servomotor (6), virtual instrument (12) sends slit LED source of parallel light (3) cycle brilliance control instruction and the synchronous acquisition instructions of linear array CCD camera imaging data to signal condition and data acquisition unit (10), signal condition and data acquisition unit (10) are with the angle of capturing and coding device (7), the brightness of the parallel led light source of slit (3), the signal of linear array CCD camera (8), each gauge head unit is independently realized linear array CCD camera (8) edge image seizure up and down, with the nominal data computing, calculate the last profile boundary position of current state, bottom profiled boundary position and diameter of work, through 360 degree multiple spot collections, reference axis is through diameter, circularity, basic parameter and lifts such as shape line, spreading parameter such as beat.
The sinusoidal regular brightness under computer control of described device, the parallel led light source of described slit (3) changes.
The measuring method of described device, axial workpiece to be measured (2) enters measured zone (5), press live centre (1) handle, axial workpiece (2) one ends to be measured are positioned over dead center (7), the other end is positioned near live centre (1) center, and release handle is under live centre (1) spring force effect, axial workpiece to be measured (2) is installed in place, and begins to measure flow process; The virtual instrument (12) that is installed in industrial control computer (11) sends motion control instruction to servo-driver (9), drive axial workpiece to be measured (2) rotation by servo-driver (9) and servomotor (6), the parallel led light source of slit (3) sinusoidal regular brightness under computer control changes, slit LED source of parallel light (3) produces the green directional light of the low angle of divergence, being blocked the last lower limb that produces hot spot by axial workpiece to be measured (2) is gathered by two linear array CCD cameras (8), virtual instrument (12) sends the cycle brilliance control instruction of LED source of parallel light and the synchronous acquisition instructions of linear array CCD camera imaging data to signal condition and data acquisition unit (10), signal condition and data acquisition unit (10) are with the angle of capturing and coding device (7), the brightness of the parallel led light source of slit (3), the signal of linear array CCD camera (8), each gauge head unit is independently realized linear array CCD camera (8) edge image seizure up and down, with the nominal data computing, calculate the last profile boundary position of current state, bottom profiled boundary position and diameter of work, through 360 degree multiple spot collections, reference axis is through diameter, circularity, basic parameter and lifts such as shape line, spreading parameter such as beat.
Remarkable advantage of the present invention comprises the design of modularization gauge head unit, reduces the complexity of physical construction; Lower limb on two ccd sensor probe measurements enlarges measurement range, improves measuring accuracy; The multistation synchro measure improves and measures beat and the requirement that reduces environment for use; Realize that based on virtual instrument and soft measurement measuring multiple parameters and expanded function comprise senior functions such as shape line analysis, CP/CPK statistics, life form.This will make this instrument system be applicable to the Mechanical Manufacturing Enterprises production line, realize that in enormous quantities, multistation and multiparameter measure fast, for enterprise-quality control, organize production, plant maintenance and new product development to provide support.
Description of drawings
Fig. 1 is the system schematic of light veil type axial workpiece multistation measuring multiple parameters method of the present invention;
Fig. 2 is modularization gauge head unit structural representation;
Fig. 3 is two CCD measurement mechanism structural representations;
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail, and the method that does not describe in detail among the present invention is prior art.
As shown in Figure 1, light veil type axial workpiece multistation multiparameter high precision measuring device comprises dynamo-electric body and 4 gauge head units, as shown in Figure 2, gauge head unit comprises band slide rail base for supporting 4, slit LED source of parallel light 3 and two linear array CCD cameras 8, the sinusoidal regular brightness under computer control of the parallel led light source 3 of slit changes, slit LED source of parallel light 3 produces the green directional light of the low angle of divergence, being blocked the last lower limb that produces hot spot by axial workpiece 2 to be measured is gathered by two linear array CCD cameras 8, wherein slit LED source of parallel light 3 direction of illuminations are vertical with linear array CCD camera 8 guide pass, and linear array CCD camera 8 optical axises are vertical with linear array CCD camera 8 guide pass.Two linear array CCD cameras 8 of each gauge head unit can as shown in Figure 3, be measured demand with the workpiece station that satisfies different size along accurate straight line screw mandrel guide rail 13 move toward one another and locking.
Axial workpiece 2 to be measured enters measured zone 5, presses live centre 1 handle, and axial workpiece 2 one ends to be measured are positioned over dead center 7, the other end is positioned near live centre 1 center, and release handle is under live centre 1 spring force effect, axial workpiece 2 to be measured is installed in place, and begins to measure flow process.The virtual instrument 12 that is installed in industrial control computer 11 sends motion control instruction to servo-driver 9, drive axial workpiece 2 rotations to be measured by servo-driver 9 and servomotor 6, virtual instrument 12 sends the cycle brilliance control instruction of LED source of parallel light and the synchronous acquisition instructions of linear array CCD camera imaging data to signal condition and data acquisition unit 10, signal condition and data acquisition unit 10 are with the angle of capturing and coding device 7, the brightness of the parallel led light source 3 of slit, the signal of linear array CCD camera 8, each gauge head unit is independently realized linear array CCD camera edge image seizure about in the of 8, with the nominal data computing, calculate the last profile boundary position of current state, bottom profiled boundary position and diameter of work, through 360 degree multiple spot collections, reference axis is through diameter, circularity, basic parameter and lifts such as shape line, spreading parameter such as beat.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection domain of claims of the present invention.

Claims (3)

1. light veil type axial workpiece multistation multiparameter high precision measuring device, it is characterized in that, comprise dynamo-electric body and 4 gauge head units, described gauge head unit comprises band slide rail base for supporting (4), slit LED source of parallel light (3) and two linear array CCD cameras (8), the parallel led light source of slit (3) sinusoidal regular brightness under computer control changes, slit LED source of parallel light (3) produces the green directional light of the low angle of divergence, being blocked the last lower limb that produces hot spot by axial workpiece to be measured (2) is gathered by two linear array CCD cameras (8), wherein slit LED source of parallel light (3) direction of illumination is vertical with linear array CCD camera (8) guide pass, and linear array CCD camera (8) optical axis is vertical with linear array CCD camera (8) guide pass; Two linear array CCD cameras (8) of each gauge head unit are along accurate straight line screw mandrel guide rail (13) move toward one another and locking; Axial workpiece to be measured (2) enters measured zone (5), press live centre (1) handle, axial workpiece (2) one ends to be measured are positioned over dead center (7), the other end is positioned near live centre (1) center, release handle, under live centre (1) spring force effect, axial workpiece to be measured (2) is installed in place, and begins to measure flow process; The virtual instrument (12) that is installed in industrial control computer (11) sends motion control instruction to servo-driver (9), drive axial workpiece to be measured (2) rotation by servo-driver (9) and servomotor (6), virtual instrument (12) sends slit LED source of parallel light (3) cycle brilliance control instruction and the synchronous acquisition instructions of linear array CCD camera imaging data to signal condition and data acquisition unit (10), signal condition and data acquisition unit (10) are with the angle of capturing and coding device (7), the brightness of the parallel led light source of slit (3), the signal of linear array CCD camera (8), each gauge head unit is independently realized linear array CCD camera (8) edge image seizure up and down, with the nominal data computing, calculate the last profile boundary position of current state, bottom profiled boundary position and diameter of work, through 360 degree multiple spot collections, reference axis is through diameter, circularity, basic parameter and lifts such as shape line, spreading parameter such as beat.
2. device according to claim 1 is characterized in that, the parallel led light source of described slit (3) sinusoidal regular brightness under computer control changes.
3. the measuring method of device according to claim 1, it is characterized in that, axial workpiece to be measured (2) enters measured zone (5), press live centre (1) handle, axial workpiece (2) one ends to be measured are positioned over dead center (7), and the other end is positioned near live centre (1) center, release handle, under live centre (1) spring force effect, axial workpiece to be measured (2) is installed in place, and begins to measure flow process; The virtual instrument (12) that is installed in industrial control computer (11) sends motion control instruction to servo-driver (9), drive axial workpiece to be measured (2) rotation by servo-driver (9) and servomotor (6), the parallel led light source of slit (3) sinusoidal regular brightness under computer control changes, slit LED source of parallel light (3) produces the green directional light of the low angle of divergence, being blocked the last lower limb that produces hot spot by axial workpiece to be measured (2) is gathered by two linear array CCD cameras (8), virtual instrument (12) sends the cycle brilliance control instruction of LED source of parallel light and the synchronous acquisition instructions of linear array CCD camera imaging data to signal condition and data acquisition unit (10), signal condition and data acquisition unit (10) are with the angle of capturing and coding device (7), the brightness of the parallel led light source of slit (3), the signal of linear array CCD camera (8), each gauge head unit is independently realized linear array CCD camera (8) edge image seizure up and down, with the nominal data computing, calculate the last profile boundary position of current state, bottom profiled boundary position and diameter of work, through 360 degree multiple spot collections, reference axis is through diameter, circularity, basic parameter and lifts such as shape line, spreading parameter such as beat.
CN201310286395.1A 2013-07-08 2013-07-08 A kind of light veil type axial workpiece multi-work-station multiparameter high-precision measuring method and device Active CN103335602B (en)

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Cited By (9)

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CN103615984A (en) * 2013-12-02 2014-03-05 四川中测流量科技有限公司 Comprehensive detection device of pipe body
CN105674879A (en) * 2016-01-08 2016-06-15 浙江科技学院 Light curtain measurement-based vehicle wheel hub screw hole identification method, masking method and system
CN106989682A (en) * 2017-06-12 2017-07-28 重庆科技学院 A kind of light veil type axial workpiece measuring instrument gauge head unit and its measuring method
CN107339937A (en) * 2017-07-10 2017-11-10 大连理工大学 A kind of mechanism kinematic parameter test device of Multi-sensor Fusion
CN108332656A (en) * 2017-12-29 2018-07-27 重庆达德机械制造有限公司 A kind of elbow tester based on Measuring light screen
CN108534713A (en) * 2017-03-02 2018-09-14 林明慧 Exempt from the image measuring device and its measurement method to positive axle center
CN109883322A (en) * 2019-01-16 2019-06-14 武汉纺织大学 A kind of repacking instrument image capturing system and its image-pickup method
CN110030922A (en) * 2018-01-11 2019-07-19 大族激光科技产业集团股份有限公司 A kind of Multipoint synchronous measurement method and measuring system and storage medium
CN111397661A (en) * 2020-04-08 2020-07-10 博众精工科技股份有限公司 Visual detection mechanism for battery core isolation film glue path

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103615984A (en) * 2013-12-02 2014-03-05 四川中测流量科技有限公司 Comprehensive detection device of pipe body
CN103615984B (en) * 2013-12-02 2016-08-17 四川中测流量科技有限公司 Comprehensive detection device of pipe body
CN105674879A (en) * 2016-01-08 2016-06-15 浙江科技学院 Light curtain measurement-based vehicle wheel hub screw hole identification method, masking method and system
CN105674879B (en) * 2016-01-08 2018-11-06 浙江科技学院 The recognition methods of automotive hub screw hole, covering method and the system measured based on light curtain
CN108534713A (en) * 2017-03-02 2018-09-14 林明慧 Exempt from the image measuring device and its measurement method to positive axle center
US11105618B2 (en) 2017-03-02 2021-08-31 Ming-Hui Lin Image-measuring apparatus without axial alignment and image-measuring method without axial alignment
CN106989682B (en) * 2017-06-12 2019-08-30 重庆科技学院 A kind of light veil type axial workpiece measuring instrument gauge head unit and its measurement method
CN106989682A (en) * 2017-06-12 2017-07-28 重庆科技学院 A kind of light veil type axial workpiece measuring instrument gauge head unit and its measuring method
CN107339937A (en) * 2017-07-10 2017-11-10 大连理工大学 A kind of mechanism kinematic parameter test device of Multi-sensor Fusion
CN108332656A (en) * 2017-12-29 2018-07-27 重庆达德机械制造有限公司 A kind of elbow tester based on Measuring light screen
CN110030922A (en) * 2018-01-11 2019-07-19 大族激光科技产业集团股份有限公司 A kind of Multipoint synchronous measurement method and measuring system and storage medium
CN110030922B (en) * 2018-01-11 2021-08-03 深圳市大族数控科技股份有限公司 Multipoint synchronous measurement method and system and storage medium
CN109883322A (en) * 2019-01-16 2019-06-14 武汉纺织大学 A kind of repacking instrument image capturing system and its image-pickup method
CN111397661A (en) * 2020-04-08 2020-07-10 博众精工科技股份有限公司 Visual detection mechanism for battery core isolation film glue path

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