CN102829744A - Method for measuring circular arc end tooth - Google Patents
Method for measuring circular arc end tooth Download PDFInfo
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- CN102829744A CN102829744A CN2012103214253A CN201210321425A CN102829744A CN 102829744 A CN102829744 A CN 102829744A CN 2012103214253 A CN2012103214253 A CN 2012103214253A CN 201210321425 A CN201210321425 A CN 201210321425A CN 102829744 A CN102829744 A CN 102829744A
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Abstract
The invention provides a method for measuring a circular arc end tooth, which comprises the following steps of step S10, scanning the periphery of a circular arc end tooth through a three-coordinate measuring instrument in a three-dimensional manner to obtain the corresponding three-dimensional data; and step S20, converting the three-dimensional data into a two-dimensional data to obtain various parameters of a circular arc end tooth shape. The method for measuring the circular arc end tooth measures the circular arc end tooth through the three-coordinate measuring instrument, and the detected three-dimensional data is converted into the two-dimensional data. The method is simpler, and has smaller measurement error, stable measured data and good repeatability; and moreover, the graphic software is utilized to conveniently and directly process the data, and the method is suitable for calibrating various circular arc end tooth gauges and mapping the circular arc end tooth.
Description
Technical field
The present invention relates to field of measuring technique, especially, relate to a kind of measuring method of circular arc end tooth.
Background technology
Circular arc end tooth current measuring methods is more original; When particularly measuring the ad. of circular arc end tooth; Can only the circular arc end tooth be placed on the microscope and measure, directly use the rice word line on the eyepiece differentiation plate to overlap to confirm size with end tooth tooth form contour image with image method.Yet on microscope, measure the circular arc end tooth a lot of shortcomings and limitation arranged with image method:
1) tested end tooth is an arc surface, is not the plane, measures with image method and can produce error because focusing distance changes;
2) tested end tooth has rounding or chamfering, and the sharpness of opposite end surface imaging impacts, and causes the detection error;
3) because microscopical range is limited, tested end tooth magnitude range is restricted;
4) measuring method does not have standard, and measurement result is influenced greatly by human factor, and efficiency of measurement is low, poor repeatability.
Summary of the invention
The object of the invention is to provide a kind of measuring method of circular arc end tooth, to solve the technical matters that can not accurately measure the circular arc end tooth at present.
For realizing above-mentioned purpose, according to an aspect of the present invention, a kind of measuring method of circular arc end tooth is provided, may further comprise the steps: step S10: through three-coordinate instrument the circumference of circular arc end tooth is carried out 3-D scanning, obtain corresponding three-dimensional data; Step S20: three-dimensional data is converted into 2-D data, obtains the parameters of tooth profile of circular arc end tooth.
Further, three-dimensional data comprises periphery entelechy radius r, tooth matching angle α and the end tooth tooth depth h of circular arc end tooth.
Further, among the step S20, by formula L
Arc length=r α π/180 calculate the arc length L of each section of circular arc end tooth
Arc length, make three-dimensional data be converted into 2-D data.
Further, three-coordinates measuring machine comprises gauge head, also comprises before the step S10: step S1, the gauge head of selecting the diameter with the circular arc end tooth to adapt according to the diameter of circular arc end tooth.
Further, also comprise after the step S1 circular arc end tooth being seated on the three-coordinates measuring machine step S2, to confirm its polar coordinate system.
Further, the gauge head diameter of measurement circular arc end tooth Profile of AT is 0.5mm.
Further, through the graphics software sense data and after carrying out gauge head compensation, the three-dimensional picture of drawing the circular arc end tooth by mapping software.
Further, gauge head is compensated for as the end tooth tooth depth h that radius that end tooth tooth depth h with the circular arc end tooth deducts gauge head obtains the circular arc end tooth again.
The present invention has following beneficial effect: the measuring method of circular arc end tooth of the present invention is measured the circular arc end tooth through three-coordinate instrument; And the three-dimensional data that detects is converted into 2-D data, this method is fairly simple and error that measure is less, measurement data stable, good reproducibility; And convenient directly perceived with the graphics software deal with data, be applicable to the calibration of various circular arc end tooth gauges and the mapping of circular arc end tooth.
Except top described purpose, feature and advantage, the present invention also has other purpose, feature and advantage.To do further detailed explanation to the present invention with reference to figure below.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the schematic flow sheet of measuring method of the circular arc end tooth of the preferred embodiment of the present invention; And
Fig. 2 is the synoptic diagram of three-coordinates measuring machine of the use of the preferred embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
Referring to Fig. 1, the preferred embodiments of the present invention provide a kind of measuring method of circular arc end tooth, are used for the circular arc end tooth on the parts is measured.Its measuring process is: step S10: through three-coordinate instrument the circumference of circular arc end tooth is carried out 3-D scanning, obtain corresponding three-dimensional data; Step S20: resulting three-dimensional data is carried out data processing obtain 2-D data, obtain the parameters of tooth profile of circular arc end tooth.
Fig. 2 illustrates the three-coordinates measuring machine that uses in the circular arc end tooth measuring method of the present invention.Three-coordinates measuring machine comprises base 10, be installed in surveying work platform 20 on the base 10, at two XYZ axle brace summers 30 of surveying work platform 20 both sides, in the gauge head 40 and the measuring system 50 of surveying work platform upper end.In the XYZ coordinate system of three-coordinates measuring machine, the XY direction is the both direction of quadrature on the surface of base platform, and the Z direction is the direction with XY direction quadrature.
Please refer again to Fig. 1, before the circular arc end tooth is measured, first step S1: the gauge head 40 of selecting for use the size with the circular arc end tooth to adapt.Usually, in the process of measuring the circular arc end tooth, need to use two gauge heads 40.When measuring the outer peripheral edges of circular arc end tooth, according to the size of circular arc end tooth, the selection diameter is moderate, the gauge head 40 of good rigidly; And when measuring circular arc end tooth Profile of AT, select the less gauge head of diameter 40 for use.Gauge head 40 diameters of measuring circular arc end tooth Profile of AT are more little, and gauge head 40 contacts the contact point that forms with tested curved surface area is more little, and it is just more little to touch the survey error; And the profile data of measuring arc end Profile of AT parameter and being through scanning survey end tooth maximum gauge place obtain, and select for use gauge head 40 diameters more little during measurement, and scan-data is more near end tooth maximum gauge place, and the error of measurement is just more little.Usually, gauge head 40 diameters of measurement circular arc end tooth Profile of AT are 0.5mm.
The second step S2: the circular arc end tooth is seated on the surveying work platform 20 of three-coordinates measuring machine, confirms polar coordinate system according to the measuring basis of circular arc end tooth.
Particularly, at first the circular arc end tooth is seated on the surveying work platform of three-coordinates measuring machine, and adjusts gauge head 40, select the gauge head 40 of the moderate and good rigidly of diameter for use.Confirm the face benchmark and the centering benchmark of circular arc end tooth then, in three-coordinates measuring machine measuring system 50, set up polar coordinate system again, with statistics and the processing of stating data after the convenience.After confirming the face benchmark and centering benchmark of circular arc end tooth, only need be in measuring system 50 behind the fundamental of input face benchmark and centering benchmark, measuring system 50 can be accomplished the foundation of polar coordinate system.
The 3rd step S10: through three-coordinates measuring machine the circular arc end tooth is carried out 3-D scanning, obtain corresponding three-dimensional data;
Particularly, at first change gauge head 40, usually, gauge head 40 is replaced with the gauge head 40 that diameter is 0.5mm.In the measuring system 50 of three-coordinates measuring machine the QIUNDOS scan command is arranged; The ME2DE of starting QIUNDOS scan command; Gauge head 40 with after changing is gathered a scan start point at the maximum gauge place of circular arc end tooth, need to prove, before the acquisition scans starting point with all to put the CLP point afterwards to the path; Three-coordinates measuring machine is paused before and after measuring automatically point out, prevent in the three-coordinates measuring machine moving process, to bump.
Then use QIUNDOS scan command ME2DE to carry out circumferential cylinder scanning along end tooth maximum gauge place.Circumferentially the cylinder scan method changes sealing scanning when scan start point is set, and changes scan type into cylinder when sweep parameter SDA is set and scans, and code is " CYL "; And input circle diameter; Guaranteeing under the errorless situation of parameter that executive routine, three-coordinates measuring machine will begin surface sweeping automatically and measure.
Behind the three-coordinates measuring machine end of scan, utilization detects data output order OUTPUT, and with the three-dimensional profile data of actual measurement that the scanning of circular arc end tooth obtains, usually, resulting data layout is the TXT form.Preserve after the data output and with corresponding filename, just can draw the file of the corresponding three-dimensional data TXT form of circular arc end tooth.Three-dimensional data comprises periphery entelechy radius r and the tooth matching angle α and the end tooth tooth depth h of circular arc end tooth.
The 4th step S20: three-dimensional data is converted into 2-D data, obtains the parameters of tooth profile of circular arc end tooth.
Periphery entelechy radius r, tooth matching angle α, the end tooth tooth depth h of the circular arc end tooth of the three-dimensional data that scanning obtains are converted into arc length coordinate figure L
Arc lengthAnd the 2-D data of end tooth tooth depth h.Preferably, convert above-mentioned three-dimensional data into 2-D data in batches through excel software.Particularly, the three-dimensional data that scanning is obtained divides three hurdles to import in the excel software by periphery entelechy radius r, tooth matching angle α, the end tooth tooth depth h of circular arc end tooth, utilizes computing formula L
Arc length=r α π/180 are converted into arc length coordinate figure L with above-mentioned three-dimensional data
Arc lengthAnd the 2-D data of end tooth tooth depth h, and be kept at corresponding position in the excel form.Above-mentioned excel form is led into the text shelves, and by arc length coordinate figure L
Arc length, end tooth tooth depth h, 0 three hurdles preserve.
Above-mentioned text shelves are read through graphics software and carried out gauge head 40 compensation, and preferably, graphics software can be MASTERCAM software.The radius that the end tooth tooth depth h that gauge head 40 compensation is about to the circular arc end tooth deducts gauge head 40 obtains the end tooth tooth depth h of new circular arc end tooth again, at last according to arc length coordinate figure L
Arc lengthAnd the end tooth tooth depth h of new circular arc end tooth, by the draw X-Y scheme of circular arc end tooth of mapping software.Preferably, mapping software can select CAD software for use.Thereby from X-Y scheme, analyze its graph data, obtain this tooth profile of circular arc end tooth parameter, arrive the distance of basal plane etc. like ad., end tooth tooth bottom surface.Basal plane is the facewidth and the groove width cross section when when equating.
The measuring method of circular arc end tooth of the present invention is measured the circular arc end tooth through three-coordinate instrument, and the three-dimensional data that detects is converted into 2-D data, and this method is fairly simple and error that measure is less, measurement data stable, good reproducibility; And convenient directly perceived with the graphics software deal with data, be applicable to the calibration of various circular arc end tooth gauges and the mapping of circular arc end tooth.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. the measuring method of a circular arc end tooth is characterized in that, may further comprise the steps:
Step S10: through three-coordinate instrument the circumference of said circular arc end tooth is carried out 3-D scanning, obtain corresponding three-dimensional data;
Step S20: said three-dimensional data is converted into 2-D data, obtains the parameters of said tooth profile of circular arc end tooth.
2. the measuring method of circular arc end tooth according to claim 1 is characterized in that, said three-dimensional data comprises periphery entelechy radius r, tooth matching angle α and the end tooth tooth depth h of circular arc end tooth.
3. the measuring method of circular arc end tooth according to claim 2 is characterized in that, among the said step S20, by formula L
Arc Long=r α π/180 calculate the arc length L of each section of said circular arc end tooth
Arc length, make said three-dimensional data be converted into 2-D data.
4. the measuring method of circular arc end tooth according to claim 1; It is characterized in that; Said three-coordinates measuring machine comprises gauge head (40); Also comprise before the said step S10: step S1, the said gauge head (40) of selecting the diameter with said circular arc end tooth to adapt according to the diameter of said circular arc end tooth.
5. the measuring method of circular arc end tooth according to claim 4 is characterized in that, also comprises after the said step S1 said circular arc end tooth being seated on the said three-coordinates measuring machine step S2, to confirm its polar coordinate system.
6. the measuring method of circular arc end tooth according to claim 5 is characterized in that, said gauge head (40) diameter of measuring said circular arc end tooth Profile of AT is 0.5mm.
7. the measuring method of circular arc end tooth according to claim 6 is characterized in that, through the graphics software sense data and after carrying out said gauge head (40) compensation, and the three-dimensional picture of drawing said circular arc end tooth by mapping software.
8. the measuring method of circular arc end tooth according to claim 7 is characterized in that, said gauge head (40) is compensated for as the end tooth tooth depth h that radius that end tooth tooth depth h with said circular arc end tooth deducts said gauge head (40) obtains said circular arc end tooth again.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105651225A (en) * | 2014-11-10 | 2016-06-08 | 沈阳黎明航空发动机(集团)有限责任公司 | Arc end tooth addendum measuring method |
| WO2017124211A1 (en) * | 2016-01-21 | 2017-07-27 | 深圳市海翔铭实业有限公司 | Method for measuring and evaluating gear precision |
| CN108562256A (en) * | 2017-11-29 | 2018-09-21 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of imperfect circular arc end tooth height of teeth top measurement method in tooth form middle part |
| CN112923890A (en) * | 2021-02-03 | 2021-06-08 | 浙江万向精工有限公司 | Measurement and evaluation method for spline tooth shape error |
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| JPS58100706A (en) * | 1981-12-10 | 1983-06-15 | Komatsu Ltd | Method and device for inspecting tooth form of gear |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105651225A (en) * | 2014-11-10 | 2016-06-08 | 沈阳黎明航空发动机(集团)有限责任公司 | Arc end tooth addendum measuring method |
| WO2017124211A1 (en) * | 2016-01-21 | 2017-07-27 | 深圳市海翔铭实业有限公司 | Method for measuring and evaluating gear precision |
| CN108562256A (en) * | 2017-11-29 | 2018-09-21 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of imperfect circular arc end tooth height of teeth top measurement method in tooth form middle part |
| CN112923890A (en) * | 2021-02-03 | 2021-06-08 | 浙江万向精工有限公司 | Measurement and evaluation method for spline tooth shape error |
| CN112923890B (en) * | 2021-02-03 | 2023-06-06 | 浙江万向精工有限公司 | Spline tooth form error measurement and evaluation method |
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| CN102829744B (en) | 2015-07-15 |
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Address after: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee after: China Hangfa South Industrial Co. Ltd. Address before: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee before: China Southern Airlines Industry (Group) Co., Ltd. |
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