CN101813447B - Embedded-type cavity groove position detector and detection method - Google Patents
Embedded-type cavity groove position detector and detection method Download PDFInfo
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- CN101813447B CN101813447B CN2009102601825A CN200910260182A CN101813447B CN 101813447 B CN101813447 B CN 101813447B CN 2009102601825 A CN2009102601825 A CN 2009102601825A CN 200910260182 A CN200910260182 A CN 200910260182A CN 101813447 B CN101813447 B CN 101813447B
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Abstract
The invention belongs to the measurement technology, relating to a detection method and an embedded-type cavity groove position detector capable of accurately measuring the position size of an internal cavity groove embedded in a part. Because of adopting the mode that an digimatic height gage is combined with a 90-degree endoscope and a reticle is installed on the front end of the 90-degree endoscope, the invention can directly realize accurate measurement of the position sizes of all embedded-type cavity grooves in a high-precise hole under the condition of no damage of part bodies. The invention can shorten detection time by about 1-2 times as compared with the phenomenon that a common method is adopted for the spot check of cut parts; and correspondingly, machine tool inspection pending time is reduced, and production efficiency is improved. The movable slide rule of the digimatic height gage is provided with a support arm the other end of which is provided with the 90-degree endoscope with the reticle, and the endoscope tube axis of the 90-degree endoscope is vertical to the working plane of a working platform; and the reticle made of parallel plate glass is installed in front of a right-angle prism on the front end of the objective lens of the 90-degree endoscope.
Description
Technical field
The invention belongs to measuring technique, relate to embedded-type cavity groove position detector and detection method that the position dimension that is embedded in part inner chamber groove is accurately measured.
Background technology
Hydraulic valve, housing are the basic Assembly parts of hydraulic system, and there are various types of chambeies flute profile formulas such as high accurate hole, oil circuit hole, rectangular channel its inside, and communicating with each other through different modes between them forms complete, as a to connect oil piping system.Wherein high accurate hole has with communication way between the oil circuit hole: through concentric or eccentric circular trough oil circuit hole and high accurate hole are connected; Through rectangular channel oil circuit hole and high accurate hole are connected; Oil circuit hole and high accurate hole are directly linked up.No matter be any communication way, the chamber groove that plays channeling all is embedded in the inside of part, and for realizing the function of oil piping system, requires to have definite, strict position between the chamber groove of high accurate hole and its communication and concerns.
Accurate measurement for embedded-type cavity groove position; Receive the restriction of its structure; What adopt at present is the measuring method of destroying part noumenon; Promptly dissect out part, its embedded-type cavity groove is displayed, adopt general test measuring device and conventional sense method to carry out embedded-type cavity groove position again and measure in the high accurate hole position.The method measurement need to destroy part, only is suitable for testpieces, for formal part, is guaranteeing can only to rely on machine tool accuracy to guarantee correct position under the constant situation of cutter, processing technology.Therefore for the part of producing in batches, can not realize check, can't provide in real time, detect data accurately process is controlled in real time each part.
Existing endoscope can only be used to observe the inner processing situation of part; Roughness like finished surface; The cutter cutter trade; Whether other part of embedded-type cavity groove and part aspect such as exchange information meets the requirement of drawing, can't realize the accurate measurement of embedded-type cavity groove position, also just can't provide accurately position dimension as the foundation of process modifications.
Summary of the invention
The purpose of this invention is to provide a kind of embedded-type cavity groove position detector and detection method that part noumenon also can accurately detect embedded-type cavity groove position that need not to destroy.Technical solution of the present invention is, the mobile slide rule of digimatic height gage is installed support arm, and the other end of support arm is equipped with 90 ° of endoscopes that have graticule, and the mirror tube's axis of 90 ° of endoscopes is vertical with the working face of workbench; The graticule that parallel plate glass is made is installed in the place ahead at the right-angle prism of 90 ° of objective of endoscope front ends; Being carved with width on it is two each other vertical grooves of 0.002～0.02mm; Wherein a groove is vertical with 90 ° of endoscope mirror tube's axis, and another groove is parallel with 90 ° of endoscope mirror tube's axis; Digimatic height gage is installed on the workbench, and the working face of workbench and the flatness of mounting plane are 0.001～0.005mm, and the degree of being parallel to each other between working face and mounting plane is 0.001～0.005mm.
The method of utilizing embedded-type cavity groove position detector to detect is; Part to be detected is placed on the workbench of detector; 90 ° of endoscopes that graticule is installed are put into the high accurate hole at the embedded-type cavity groove place of part to be detected; 90 ° of endoscopes of mobile slide rule drive through digimatic height gage move up and down in high accurate hole; Earlier groove parallel with the working face of workbench in 90 ° of endoscope lens the place ahead graticules is alignd with the reference field of part; Digimatic height gage is provided with zero-bit in this position, and again with the groove parallel with the working face of workbench in 90 ° of endoscope lens the place ahead graticules and the justified margin of tested embedded-type cavity groove, the numerical value that digimatic height gage shows is the position dimension of embedded-type cavity groove.
Advantage that the present invention has and beneficial effect; The mode that the front end that the present invention adopts digimatic height gage and 90 ° of endoscopes knot to be incorporated in 90 ° of endoscopes is installed graticule; Do not breaking under the situation of circulation layer spare body, can directly realize the accurate measurement of the 0.05mm level of the position dimension of all embedded-type cavity grooves in the high accurate hole.Can shorten proving time, with respect to dissecing out the sampling observation that part adopts commonsense method to carry out, the supervision time shortens about 1-2 times, the corresponding time to be checked that also reduces lathe, enhances productivity.And adopt the method to detect, and accurate, reliable measurement data is provided, can realize the real-time monitoring of production run, be fit to production in batches, guarantee part quality to all embedded-type cavity groove positions of each part.
Description of drawings
Fig. 1 is a measuring instrument structural representation of the present invention;
Fig. 2 is a testing process synoptic diagram of the present invention;
Fig. 3 is the synoptic diagram of the local A of Fig. 2;
Fig. 4 is the endoscope distal end structural representation;
Fig. 5 is the graticule synoptic diagram.
Embodiment
Embedded-type cavity groove position detector is made up of 90 ° of endoscopes 3 of workbench 1, digimatic height gage 2 and installation graticule.Workbench 1 is the basic components of measuring instrument.The working face 20 of workbench 1 and the flatness of mounting plane 21 are 0.001～0.005mm, and the degree of being parallel to each other that working face 20 and mounting plane are 21 is 0.001～0.005mm.What the object lens 12 of 90 ° of endoscope 3 front ends adopted is right-angle prism 13, can light path 15 be converted to become 90 ° of vertical light paths 16 with it, promptly changes light path through right-angle prism 13, and eyes can be along axially bored line direction Direct observation hole wall.The graticule 14 that parallel plate glass is made is installed in the place ahead at right-angle prism 13; Be carved with two each other vertical grooves 17 and 18 of width 0.002～0.02mm on it; Wherein groove 17 and endoscope mirror pipe 4 axis normal, groove 18 is parallel with endoscope mirror tube's axis 4.Being used for aiming at the groove 17 of 90 ° of endoscope mirror pipe 4 axis normal, is the benchmark position line of confirming embedded-type cavity groove position.Be fixed on 90 ° of endoscopes 3 that graticule 14 is installed on the mobile slide rule 7 of digimatic height gage 2 through support arm 19; The mirror pipe 4 of its endoscope is vertical with the working face 20 of workbench 1; The working face 20 that promptly is parallel to workbench with the groove 17 of endoscope mirror pipe 4 axis normal; Utilize measurement, the reading function of digital display height gauge, realize that the position of embedded circular trough is accurately measured.
The method that adopts embedded-type cavity groove position detector to detect embedded-type cavity groove position is; Part 5 is placed on the workbench 1 of detector; The axis of tested embedded-type cavity groove place high accurate hole is vertical with the working face 20 of workbench 1; 90 ° of endoscopes that graticule 14 is installed are put into the high accurate hole at the embedded-type cavity groove place of part to be detected; 90 ° of endoscopes 3 of mobile slide rule 7 drives through digimatic height gage 2 move up and down; Let and align with the reference field 6 of part with the working face 20 parallel grooves 17 of workbench 1 in 90 ° of endoscope lens, 12 the place ahead graticules 14, press the reset function button 8 of digimatic height gage 3, the electronic console 9 of digimatic height gage 3 shows numerical value " 0 "; Being that digimatic height gage is provided with the benchmark zero-bit in this position, also is the benchmark zero-bit of embedded-type cavity groove position size; With aliging with the edge 10 and 11 of tested embedded-type cavity groove respectively with the working face 20 parallel grooves 17 of workbench 1 in 90 ° of endoscope lens, 12 the place ahead graticules 14, the numerical value that the electronic console 9 of digimatic height gage 3 shows is exactly the embedded-type cavity groove position size again.
Embodiment
The material of workbench is selected:
Workbench is to use as benchmark in measurement, and its working face and mounting plane are exactly the measuring basis face.The precision of workbench and stability can directly influence measurement result.So select metallographic structure even, be easy to guarantee the material of workbench precision.Materials such as cast iron, marble or steel commonly used.
The designing requirement of workbench:
Be the precision that guarantees to detect, the working face of workbench and the flatness of mounting plane require less than 0.005mm, and the degree of being parallel to each other between working face and mounting plane requires less than 0.005mm.Dull and stereotyped necessary through Ageing Treatment, eliminate unrelieved stress, the thickness of working plate is greater than 25mm.
The selection of digimatic height gage, measuring accuracy depend primarily on precision and operating personnel's aligning level of digimatic height gage, so require to select digimatic height gage according to part precision; The measurement range of digimatic height gage confirms that according to the position dimension of tested chamber groove the assurance endoscope can be put into part.
The requirement of division of the graticule:
The width of groove can influence the effect and the measurement result of observation; Because endoscope has enlarging function, the groove that naked eyes are seen is a line, and the groove of in endoscope, seeing is the rectangular strip that certain width is arranged; When the groove that will have a certain width through endoscope aligns the edge of tested embedded-type cavity groove; Because testing staff's visual effect is different different with aligned position, promptly aim at the edge of tested embedded-type cavity groove with the diverse location in the line width scope, so different testing staff's measurement result is different; Same exactly testing staff measures same position; The result also there are differences, and for eliminating the measuring error that causes owing to line width, the width requirement of groove is less than 0.02mm.
The method of inspection:
Shown in Figure 1, when the part 5 that the embedded-type cavity groove is arranged was checked, part 5 was placed on the workbench 1, and the high accurate hole at tested embedded-type cavity groove place guarantees that the axis of high accurate hole is vertical with the working face 20 of workbench 1 up.In the high accurate hole at the embedded-type cavity groove place of 90 ° of endoscopes, the 3 entering part to be detected of mobile slide rule 7 drive installation graticules 14.90 ° of endoscopes 3 of mobile slide rule 7 drives through digimatic height gage 2 move earlier; Let in 90 ° of endoscope lens, 12 the place ahead graticules 14 upper edge of the groove 17 parallel aim at the reference field 6 of embedded-type cavity groove position size with the working face of workbench 1 20; Press the reset function button 8 of digimatic height gage 2 in this position; The electronic console 9 of digimatic height gage 2 shows numerical value " 0 "; At this moment promptly set the position reference zero-bit of embedded-type cavity groove; The mobile slide rule 7 of mobile electron digital display height gauge 2 again; The upper edge of groove 17 parallel with the working face of workbench 1 20 in 90 ° of endoscope lens, 12 the place ahead graticules 14 is aimed at the tested edge 10 and 11 of embedded-type cavity groove respectively, and the electronic console 9 of digimatic height gage 3 shows that numerical value are exactly the physical location size of embedded-type cavity groove, judges relatively with the figure paper size whether size is qualified.
Claims (2)
1. embedded-type cavity groove position detector; Form by workbench (1), digimatic height gage (2) and 90 ° of endoscopes (3) that graticule (14) is installed; It is characterized in that; The mobile slide rule (7) of digimatic height gage (2) is installed in an end of support arm (19), and the other end of support arm (19) is equipped with the 90 ° of endoscopes (3) that have graticule (14), and the mirror tube's axis of 90 ° of endoscopes (3) is vertical with the working face (20) of workbench (1); The graticule (14) that parallel plate glass is made is installed in the place ahead at the right-angle prism (13) of object lens (12) front end of 90 ° of endoscopes (3); Being carved with width on the graticule (14) is two each other vertical grooves (17,18) of 0.002～0.02mm; Wherein a groove is vertical with 90 ° of endoscope mirror tube's axis, and another groove is parallel with 90 ° of endoscope mirror tube's axis; Digimatic height gage (2) is installed on the working face (20) of workbench (1) upper surface; The flatness of the mounting plane (21) of the working face (20) of workbench (1) upper surface and workbench (1) lower surface is 0.001～0.005mm, and the degree of being parallel to each other between working face (20) and mounting plane (21) is 0.001～0.005mm.
2. method that detects with the described embedded-type cavity groove position detector of claim 1; It is characterized in that; Part to be detected is placed on the workbench of embedded-type cavity groove position detector; 90 ° of endoscopes that graticule is installed are put into the high accurate hole at the embedded-type cavity groove place of part to be detected; 90 ° of endoscopes of mobile slide rule drive through digimatic height gage move up and down in high accurate hole, earlier groove parallel with the working face of workbench in 90 ° of endoscope lens the place ahead graticules are alignd with the reference field of part, and digimatic height gage is provided with zero-bit in this position; With the groove parallel with the working face of workbench in 90 ° of endoscope lens the place ahead graticules and the justified margin of tested embedded-type cavity groove, the numerical value that digimatic height gage shows is the position dimension of embedded-type cavity groove again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102601825A CN101813447B (en) | 2009-12-28 | 2009-12-28 | Embedded-type cavity groove position detector and detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102601825A CN101813447B (en) | 2009-12-28 | 2009-12-28 | Embedded-type cavity groove position detector and detection method |
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| Publication Number | Publication Date |
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| CN101813447A CN101813447A (en) | 2010-08-25 |
| CN101813447B true CN101813447B (en) | 2012-07-18 |
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| CN2009102601825A Expired - Fee Related CN101813447B (en) | 2009-12-28 | 2009-12-28 | Embedded-type cavity groove position detector and detection method |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102809339B (en) * | 2012-06-16 | 2014-12-31 | 西安航空动力控制科技有限公司 | Accurate measuring device and measuring method of inner hole sharp side |
| CN104677278A (en) * | 2015-03-06 | 2015-06-03 | 云南电网有限责任公司电力科学研究院 | Target size monocular measurement method based on industrial endoscope |
| CN105241356A (en) * | 2015-10-20 | 2016-01-13 | 成都长迪传感技术有限公司 | Sensor dimension calibrating device convenient for manufacturing |
| CN105277086A (en) * | 2015-10-20 | 2016-01-27 | 成都长迪传感技术有限公司 | Sensor product quality detection device |
| CN105806264B (en) * | 2016-05-13 | 2018-05-25 | 中国科学院国家天文台 | A kind of method for measuring profound coaxiality of inner hole |
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