CN102829744B - Method for measuring circular arc end tooth - Google Patents
Method for measuring circular arc end tooth Download PDFInfo
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- CN102829744B CN102829744B CN201210321425.3A CN201210321425A CN102829744B CN 102829744 B CN102829744 B CN 102829744B CN 201210321425 A CN201210321425 A CN 201210321425A CN 102829744 B CN102829744 B CN 102829744B
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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
The existing measuring method of circular arc end tooth is more original, when particularly measuring the ad. of circular arc end tooth, circular arc end tooth can only be placed on microscope and measure with image method, directly use the rice wordline on eyepiece differentiation plate to overlap with end tooth tooth form contour image and determine size.But a lot of shortcomings and limitations are had by image method measurement circular arc end tooth on microscope:
1) tested end tooth is an arc surface, is not plane, can produce error with image method measurement because of focusing distance change;
2) tested end tooth has rounding or chamfering, and the sharpness of opposite end surface imaging impacts, and causes metrical error;
3) because microscopical range is limited, tested end tooth magnitude range is restricted;
4) measuring method does not have specification, and measurement result is affected by human factors greatly, measures efficiency low, poor repeatability.
Summary of the invention
The object of the invention is the measuring method providing a kind of circular arc end tooth, to solve the technical matters accurately can not measuring circular arc end tooth at present.
For achieving the above object, according to an aspect of the present invention, provide a kind of measuring method of circular arc end tooth, comprise the following steps: step S10: by three-coordinate instrument, 3-D scanning is carried out to the circumference of circular arc end tooth, 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, the tooth matching angle α and end tooth tooth depth h of circular arc end tooth.
Further, in 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 step S10: step S1, selects the gauge head adapted with the diameter of circular arc end tooth according to the diameter of circular arc end tooth.
Further, after step S1, also comprise step S2, circular arc end tooth is seated on three-coordinates measuring machine, to determine its polar coordinate system.
Further, the measuring head diameter measuring circular arc end tooth Profile of AT is 0.5mm.
Further, after carrying out gauge head compensation, the three-dimensional picture of circular arc end tooth is drawn by graphics software sense data by mapping software.
Further, gauge head is compensated for as the end tooth tooth depth h that the radius end tooth tooth depth h of circular arc end tooth being deducted gauge head obtains 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 circular arc end tooth by three-coordinate instrument, and the three-dimensional data of detection is converted into 2-D data, the method is fairly simple and less, the measurement data of error measured is stable, reproducible; And convenient directly perceived by graphics software process data, be applicable to the various calibration of circular arc end tooth gauge and the mapping of circular arc end tooth.
Except object described above, feature and advantage, the present invention also has other object, feature and advantage.Below with reference to figure, the present invention is further detailed explanation.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic flow sheet of the measuring method of the circular arc end tooth of the preferred embodiment of the present invention; And
Fig. 2 is the schematic diagram of the 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 described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
See Fig. 1, the preferred embodiments of the present invention provide a kind of measuring method of circular arc end tooth, for measuring the circular arc end tooth on parts.Its measuring process is: step S10: carry out 3-D scanning by three-coordinate instrument to the circumference of circular arc end tooth, obtains corresponding three-dimensional data; Step S20: obtained three-dimensional data is carried out data processing and obtains 2-D data, obtain the parameters of tooth profile of circular arc end tooth.
Fig. 2 illustrates the three-coordinates measuring machine used in circular arc end tooth measuring method of the present invention.Three-coordinates measuring machine comprises base 10, the surveying work platform 20 be arranged on base 10, in two XYZ axle brace summers 30 of surveying work platform 20 both sides, the gauge head 40 in surveying work platform upper end and measuring system 50.In the XYZ coordinate system of three-coordinates measuring machine, XY direction is both direction orthogonal on the surface of base platform, and Z-direction is the direction orthogonal with XY direction.
Referring again to Fig. 1, before circular arc end tooth is measured, first step S1: select the gauge head 40 adapted with the size of circular arc end tooth.Usually, in the process measuring circular arc end tooth, use two gauge heads 40 are needed.When measuring the outer peripheral edges of circular arc end tooth, according to the size of circular arc end tooth, selection diameter is moderate, the gauge head 40 of good rigidly; And when measuring circular arc end tooth Profile of AT, the gauge head 40 selecting diameter less.Gauge head 40 diameter measuring circular arc end tooth Profile of AT is less, and the area of the contact point that gauge head 40 and tested curved face contact are formed is less, touches survey error less; And measurement circular arc end tooth profile parameter is obtained by the profile data at scanning survey end tooth maximum gauge place, select gauge head 40 diameter less during measurement, scan-data is more close to end tooth maximum gauge place, and the error of measurement is less.Usually, gauge head 40 diameter measuring circular arc end tooth Profile of AT is 0.5mm.
Second step S2: circular arc end tooth be seated on the surveying work platform 20 of three-coordinates measuring machine, according to the measuring basis determination polar coordinate system of circular arc end tooth.
Particularly, first circular arc end tooth is seated on the surveying work platform of three-coordinates measuring machine, and adjusts gauge head 40, select diameter moderate and the gauge head 40 of good rigidly.Then determine face benchmark and the centering standard of circular arc end tooth, then set up polar coordinate system in three-coordinates measuring machine measuring system 50, to facilitate statistics and the process of aftermentioned data.After the face benchmark determining circular arc end tooth and centering standard, after only needing the fundamental of input face benchmark and centering standard in measuring system 50, measuring system 50 can complete the foundation of polar coordinate system.
3rd step S10: carry out 3-D scanning to circular arc end tooth by three-coordinates measuring machine, obtains corresponding three-dimensional data;
Particularly, first change gauge head 40, usually, gauge head 40 is replaced with the gauge head 40 that diameter is 0.5mm.QIUNDOS scan command is had in the measuring system 50 of three-coordinates measuring machine, start the ME2DE of QIUNDOS scan command, collection scan start point is carried out at the maximum gauge place of circular arc end tooth with the gauge head 40 after changing, it should be noted that, all path point CLP point will be given before and after acquisition scans starting point, automatically pausing after making three-coordinates measuring machine before measuring points out, prevents from colliding in three-coordinates measuring machine moving process.
Then QIUNDOS scan command ME2DE is used to carry out circumferential cylinder scanning along end tooth maximum gauge place.Circumference cylinder scan method closes scanning for changing when arranging scan start point, and change scan type into cylinder scanning when arranging sweep parameter SDA, code is " CYL ", and input circle diameter, when guaranteeing that parameter is errorless, executive routine, three-coordinates measuring machine is measured automatically starting surface sweeping.
After the three-coordinates measuring machine end of scan, use and detect data output order OUTPUT, circular arc end tooth is scanned the three-dimensional profile data of the actual measurement obtained, usually, the data layout obtained is TXT form.Data export rear and preserve 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 end tooth tooth depth h of circular arc end tooth.
4th step S20: three-dimensional data is converted into 2-D data, obtains the parameters of tooth profile of circular arc end tooth.
The periphery entelechy radius r, tooth matching angle α, the end tooth tooth depth h that scan the circular arc end tooth of the three-dimensional data obtained are converted into arc length coordinate figure L
arc lengthand the 2-D data of end tooth tooth depth h.Preferably, be 2-D data by excel software by above-mentioned three-dimensional data Batch conversion.Particularly, by scanning the three-dimensional data that the obtains periphery entelechy radius r by circular arc end tooth, tooth matching angle α, end tooth tooth depth h divide three hurdles to import in excel software, utilizes computing formula L
arc length=r α π/180, are converted into arc length coordinate figure L by above-mentioned three-dimensional data
arc lengthand the 2-D data of end tooth tooth depth h, and be kept at corresponding position in excel form.Above-mentioned excel form is led into text shelves, and by arc length coordinate figure L
arc length, end tooth tooth depth h, 0 three hurdles preserve.
Read by graphics software and carry out gauge head 40 by above-mentioned text shelves and compensate, preferably, graphics software can be MASTERCAM software.The radius that the gauge head 40 end tooth tooth depth h compensated by circular arc end tooth deducts gauge head 40 obtains the end tooth tooth depth h of new circular arc end tooth again, finally according to arc length coordinate figure L
arc lengthand the end tooth tooth depth h of new circular arc end tooth, the X-Y scheme of circular arc end tooth is drawn by mapping software.Preferably, mapping software can select CAD software.Thus from X-Y scheme, analyze its graph data, obtain this tooth profile of circular arc end tooth parameter, if ad., end tooth tooth bottom surface are to the distance etc. of basal plane.Basal plane be the facewidth equal with groove width time equal time cross section.
The measuring method of circular arc end tooth of the present invention is measured circular arc end tooth by three-coordinate instrument, and the three-dimensional data of detection is converted into 2-D data, and the method is fairly simple and less, the measurement data of error measured is stable, reproducible; And convenient directly perceived by graphics software process data, be applicable to the various calibration of circular arc end tooth gauge and the mapping of circular arc end tooth.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a measuring method for circular arc end tooth, is characterized in that, comprises the following steps:
Before circular arc end tooth is measured,
First step S1: select the gauge head (40) adapted with the size of circular arc end tooth; Use two described gauge heads (40) are needed in the process measuring circular arc end tooth; When measuring the outer peripheral edges of circular arc end tooth, according to the size of circular arc end tooth, the described gauge head (40) of moderate, the good rigidly of diameter is selected from two described gauge heads (40), and when measuring circular arc end tooth Profile of AT, the described gauge head (40) selecting diameter less from two described gauge heads (40);
Second step S2: circular arc end tooth be seated on the surveying work platform (20) of three-coordinates measuring machine, according to the measuring basis determination polar coordinate system of circular arc end tooth; Particularly, first circular arc end tooth is seated on the surveying work platform of three-coordinates measuring machine, and adjusts described gauge head (40), select diameter moderate and the described gauge head (40) of good rigidly; Then determine face benchmark and the centering standard of circular arc end tooth, then set up polar coordinate system in three-coordinates measuring machine measuring system (50); Circular arc end tooth is measured,
Step S10: carry out 3-D scanning to the circumference of described circular arc end tooth by three-coordinate instrument, obtains corresponding three-dimensional data;
Step S20: described three-dimensional data is converted into 2-D data, obtains the parameters of described tooth profile of circular arc end tooth.
2. the measuring method of circular arc end tooth according to claim 1, is characterized in that, described three-dimensional data comprises periphery entelechy radius r, the tooth matching angle α and 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, in described step S20, by formula L
arc long=r α π/180 calculate the arc length L of each section of described circular arc end tooth
arc length, make described three-dimensional data be converted into 2-D data.
4. the measuring method of circular arc end tooth according to claim 1, is characterized in that, described gauge head (40) diameter measuring described circular arc end tooth Profile of AT is 0.5mm.
5. the measuring method of circular arc end tooth according to claim 4, is characterized in that, by graphics software sense data and carry out described gauge head (40) compensate after, drawn the three-dimensional picture of described circular arc end tooth by mapping software.
6. the measuring method of circular arc end tooth according to claim 5, it is characterized in that, described gauge head (40) is compensated for as the end tooth tooth depth h that the radius end tooth tooth depth h of described circular arc end tooth being deducted described gauge head (40) obtains described circular arc end tooth again.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210321425.3A CN102829744B (en) | 2012-09-03 | 2012-09-03 | Method for measuring circular arc end tooth |
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| CN201210321425.3A CN102829744B (en) | 2012-09-03 | 2012-09-03 | Method for measuring circular arc end tooth |
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| CN102829744B true CN102829744B (en) | 2015-07-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN105698722A (en) * | 2016-01-21 | 2016-06-22 | 深圳市海翔铭实业有限公司 | Gear precision measurement and evaluation method |
| CN108562256B (en) * | 2017-11-29 | 2020-09-04 | 中国航发沈阳黎明航空发动机有限责任公司 | Tooth top height measuring method for incomplete circular arc end in middle of tooth profile |
| 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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| JPS58100706A (en) * | 1981-12-10 | 1983-06-15 | Komatsu Ltd | Method and device for inspecting tooth form of gear |
| JP3127785B2 (en) * | 1995-06-15 | 2001-01-29 | トヨタ自動車株式会社 | Gear tooth profile measuring device |
| CN100557382C (en) * | 2007-12-07 | 2009-11-04 | 保定惠阳航空螺旋桨制造厂 | A kind of three-coordinate measuring method of beveled wheel tooth error |
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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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