CN102183208A - Method for gear tooth parameter measurement realized by software function instead of traditional rotary working table accessory - Google Patents
Method for gear tooth parameter measurement realized by software function instead of traditional rotary working table accessory Download PDFInfo
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- CN102183208A CN102183208A CN 201110060272 CN201110060272A CN102183208A CN 102183208 A CN102183208 A CN 102183208A CN 201110060272 CN201110060272 CN 201110060272 CN 201110060272 A CN201110060272 A CN 201110060272A CN 102183208 A CN102183208 A CN 102183208A
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Abstract
The invention discloses a method for gear tooth parameter measurement realized by a software function instead of a traditional rotary working table accessory, wherein the software function is programmed by computer video image display and processing techniques. After the software function which is programmed by computer video image display and processing techniques is operated, a theoretical radius size is input through an artificial way, and then a theoretical size circle scaled up can be displayed on the computer display screen; and meanwhile, the gear contour to be measured can be imaged on the computer display screen by the same scale, the centre coordinates of gear base circle to be measured can be positioned through the software function, and the circle can automatically intersect with the centre part image of each gear tooth to be measured at the same imaging time. The software can extremely intuitively collect the data at the intersected position and carry out the data processing so as to obtain the size parameter to be measured. The whole process of measurement is intuitive, convenient and rapid, saves the rotary working table accessory with fussy and time-consuming measurement and reduces the manufacturing cost.
Description
Technical field: the computer video image that the present invention relates to length-measuring instrument shows, treatment technology, on the gauging instrument that is applied to show, handle with computer picture, can with visual, intuitively, the direct prototype gear parameter of mode conveniently, can replace the indispensable annex of former universal tool-measuring microscope prototype gear
Circular table, particularly a kind of software function substitutes the method that traditional round worktable annex carries out gear tooth parameter measurement.
Background technology: universal tool-measuring microscope is when measuring, the energy that measured piece places instrument laterally, on the movable platform of linear longitudinal movement, by object lens with measured piece profile amplification imaging in having on meter word line graticule eyepiece, draw measurement result by carrying out measurement of correlation again with a rice word line sight picture contour edge.
According to GB/T3374-1992 " gear basic terms ", the tooth pitch of gear is meant: (allowing to measure near the tooth depth middle part) arc length between any two homonymy tooth pitches on the reference circle.The actual value of arc length and design load is poor between two teeth, is called pitch error, and its value influences the accuracy of transmission.
The principle that tool microscope is measured tooth pitch is: directly measure the pairing central angle of tooth pitch arc length earlier, angular deviation is converted into the deviation of arc length again.
The method that tradition uses the circular table image method to measure tooth pitch is:
1, load onto circular table, also fixing above tested gear is placed on.
2, manually rotate goniometer eyepiece scale to 0 °, tangent with vertical line and the bore of rice word line 9 (as Fig. 3), the correction endoporus overlaps with the circular table rotation center.
3, mobile instrument worktable with 0 ° and 180 ° two positions of goniometer eyepiece rice word line aiming bore, is asked for mid point x
0, aim at 90 ° of bores and 270 ° of two positions again, ask for mid point y
0, obtain gear centre coordinate x
0, y
0
4, artificial mobile Y coordinate is to y
0+ R2 place (R2 is a reference radius), the X coordinate is to x
0The place sets up and measures starting point.
5, mobile circular table, make the right flank profil of a tooth of meter word line aiming and rotate goniometer eyepiece rice word line and flank profil tangent, write down circular table angle φ
0(as Fig. 3).
6, calculate the point of theory φ of each flank profil to first tooth
i
7, by the point of theory φ that calculates
iArtificial successively slewing circle worktable aims at this flank profil to next tooth and with the rice word line, writes down actual circular table angle φ
i
8, can calculate gears tooth pitch by correlation formula according to above data
The tradition universal tool-measuring microscope is when the prototype gear tooth pitch, must use the circular table annex just can measure, before measuring, circular table must be installed earlier, tested bore must be overlapped with circular table rotation center manual calibration simultaneously, this can spend a large amount of time, influence efficiency of measurement, prototype gear centre coordinate, mobile Y coordinate are to measuring starting point (gear measurement step 3,4) and operation being become require great effort time-consuming by the artificial step by step rotational circle worktable of theoretical angle in addition.
Summary of the invention: the object of the present invention is to provide a kind of on band CCD camera computer data processing universal tool-measuring microscope, abandon the indispensable annex circular table of former apparatus measures gear, with visual, intuitively, mode efficiently, the method for prototype gear tooth pitch.
Formation of the present invention: a kind of software function substitutes the method that traditional round worktable annex carries out gear tooth parameter measurement, tested gear is placed on arbitrarily on surveying instrument (1) worktable, by optical imaging system (2) and CCD camera (3) tested gear profile being imaged onto CCD accepts on the face, by image card (4) the CCD video signal is sent to computer software image window (5) again, and open up the dynamic contour images that shows tested gear of an image window by computing machine, work out a software module, on computers after the operation, carry out following function: mobile instrument worktable, in the computer screen image window, find tested bore, with these a plurality of positions, endoporus image border of click, at least 3 positions, automatically calculate the endoporus centre coordinate by software according to the picture search algorithm, with this endoporus centre coordinate is benchmark, input hypothesis reference radius size in software dialogue box, can be automatically in this moment image window to be with the endoporus centre coordinate that benchmark is drawn an imaginary circle crossing with each tooth centre of actual tested gear, software can gather these intersecting point coordinates very intuitively and automatic calculating directly draws measurement result according to correlation formula.
Compared with prior art: the present invention puts tested gear arbitrarily on the instrument worktable, utilize soft, hardware by the CCD camera with the gear profile image imaging to computer screen; Mobile instrument worktable, in the computer screen image window, find tested bore, automatically calculate endoporus centre coordinate by software according to the picture search algorithm with these a plurality of positions, endoporus image border (at least 3 positions) of click, with this endoporus centre coordinate is benchmark, input hypothesis reference radius size in software dialogue box.Can automatically occur with endoporus centre coordinate in the image window this moment is the imaginary circle figure that benchmark is drawn, (as Fig. 2) intersected in each tooth centre of this figure and actual tested gear, and software can carry out data acquisition (collection intersecting point coordinate) and directly draw measurement result according to correlation formula by software facing to these intersection areas very intuitively.The prototype gear tooth pitch had not only been cancelled the circular table annex and has been reduced cost but also simplified operation steps in this way, seemed directly perceived, convenient, fast, had improved efficiency of measurement simultaneously, had alleviated operator's labour intensity.
Description of drawings: Fig. 1 is a system schematic of the present invention, and Fig. 2 is an instrumentation plan of the present invention, and Fig. 3 is a goniometer eyepiece rice word line synoptic diagram.
Among the figure: 1, surveying instrument, 2, optical imaging system, 3, the CCD camera, 4, image card, 5, the computer software image window, 6, joining, 7, imaginary drawing, 8, the endoporus marginal point, 9, the rice word line.
Embodiment: tested gear is placed on arbitrarily on surveying instrument 1 worktable, by optical imaging system 2 and CCD camera 3 tested gear profile is imaged onto CCD and accepts on the face, by image card 4 the CCD video signal is sent to computer software image window 5 and opens up the dynamic contour images that shows tested gear of an image window by computing machine again.Work out a software module, on computers after the operation, carry out following function: mobile instrument worktable, in the computer screen image window, find tested bore, automatically calculate endoporus centre coordinate by software according to the picture search method with these a plurality of positions, endoporus image border (at least 3 positions) of click, with this endoporus centre coordinate is benchmark, input hypothesis reference radius size in software dialogue box.Can be each tooth centre crossing (cross is represented among Fig. 2) that benchmark is drawn an imaginary circle and actual tested gear with the endoporus centre coordinate automatically this moment in the image window, and software can gather these intersecting point coordinates very intuitively and automatic calculating directly draws measurement result according to correlation formula.
Claims (1)
1. a software function substitutes the method that traditional round worktable annex carries out gear tooth parameter measurement, it is characterized in that: tested gear is placed on arbitrarily on surveying instrument (1) worktable, by optical imaging system (2) and CCD camera (3) tested gear profile being imaged onto CCD accepts on the face, by image card (4) the CCD video signal is sent to computer software image window (5) again, and open up the dynamic contour images that shows tested gear of an image window by computing machine, work out a software module, on computers after the operation, carry out following function: mobile instrument worktable, in the computer screen image window, find tested bore, with these a plurality of positions, endoporus image border of click, at least 3 positions, automatically calculate the endoporus centre coordinate by software according to the picture search algorithm, with this endoporus centre coordinate is benchmark, input hypothesis reference radius size in software dialogue box, can be automatically in this moment image window to be with the endoporus centre coordinate that benchmark is drawn an imaginary circle crossing with each tooth centre of actual tested gear, software can gather these intersecting point coordinates very intuitively and automatic calculating directly draws measurement result according to correlation formula.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110060272 CN102183208A (en) | 2011-03-14 | 2011-03-14 | Method for gear tooth parameter measurement realized by software function instead of traditional rotary working table accessory |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110060272 CN102183208A (en) | 2011-03-14 | 2011-03-14 | Method for gear tooth parameter measurement realized by software function instead of traditional rotary working table accessory |
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| CN102183208A true CN102183208A (en) | 2011-09-14 |
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| CN 201110060272 Pending CN102183208A (en) | 2011-03-14 | 2011-03-14 | Method for gear tooth parameter measurement realized by software function instead of traditional rotary working table accessory |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104458762A (en) * | 2014-11-28 | 2015-03-25 | 中国计量学院 | Digital optical fiber sensor-based detection method for quality of ABS gear ring |
| CN107525480A (en) * | 2017-08-31 | 2017-12-29 | 长江存储科技有限责任公司 | A kind of longhole survey method and device |
| CN109870111A (en) * | 2019-03-18 | 2019-06-11 | 吉林大学 | Involute cylindrical gear total cumulative pitch error measurement method based on machine vision |
| CN110793462A (en) * | 2019-11-15 | 2020-02-14 | 中北大学 | Nylon gear reference circle measuring method based on vision technology |
| CN112439951A (en) * | 2020-11-11 | 2021-03-05 | 中国航发中传机械有限公司 | Gear chamfering and milling method based on geometric adaptive compensation |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101982729A (en) * | 2010-08-27 | 2011-03-02 | 中国计量学院 | Rack measuring method by utilizing image method |
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2011
- 2011-03-14 CN CN 201110060272 patent/CN102183208A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101982729A (en) * | 2010-08-27 | 2011-03-02 | 中国计量学院 | Rack measuring method by utilizing image method |
Non-Patent Citations (2)
| Title |
|---|
| 《微计算机信息》 20071231 倪振松等 计算机视觉技术在齿轮测量中的应用研究 第2部分-第3部分 1 第23卷, 第3-1期 * |
| 《计算机测量与控制》 20091231 黎鹏等 基于机器视觉的直齿圆柱齿轮尺寸参数测量 第1部分-第3部分 1 第17卷, 第4期 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104458762A (en) * | 2014-11-28 | 2015-03-25 | 中国计量学院 | Digital optical fiber sensor-based detection method for quality of ABS gear ring |
| CN104458762B (en) * | 2014-11-28 | 2017-05-03 | 中国计量学院 | Digital optical fiber sensor-based detection method for quality of ABS gear ring |
| CN107525480A (en) * | 2017-08-31 | 2017-12-29 | 长江存储科技有限责任公司 | A kind of longhole survey method and device |
| CN109870111A (en) * | 2019-03-18 | 2019-06-11 | 吉林大学 | Involute cylindrical gear total cumulative pitch error measurement method based on machine vision |
| CN110793462A (en) * | 2019-11-15 | 2020-02-14 | 中北大学 | Nylon gear reference circle measuring method based on vision technology |
| CN112439951A (en) * | 2020-11-11 | 2021-03-05 | 中国航发中传机械有限公司 | Gear chamfering and milling method based on geometric adaptive compensation |
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Application publication date: 20110914 |