CN103278100B - A kind of bore diameter measuring method based on noncontacting proximity sensor combination - Google Patents

A kind of bore diameter measuring method based on noncontacting proximity sensor combination Download PDF

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Publication number
CN103278100B
CN103278100B CN201310244720.8A CN201310244720A CN103278100B CN 103278100 B CN103278100 B CN 103278100B CN 201310244720 A CN201310244720 A CN 201310244720A CN 103278100 B CN103278100 B CN 103278100B
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China
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gauge head
measurement
dual sensor
diameter
bore
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CN201310244720.8A
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Chinese (zh)
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CN103278100A (en
Inventor
李兴强
王仲
刘新波
郑镕浩
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天津大学
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Abstract

The invention discloses a kind of bore diameter measuring method based on noncontacting proximity sensor combination, measurement suitable in workpiece diameter size, relate to geometric measurement field, described method includes: be first arranged on by the main shaft of dual sensor gauge head in the mechanism with translation function, form the measurement system of complete set, be placed in measured workpiece;During measurement, it is desirable to the measurement optical axis of two sensors on dual sensor gauge head is point-blank;Dual sensor gauge head first rotates in ZOY face, after translate in XOY face, obtain the diameter of bore of measured workpiece;Or dual sensor gauge head successively in ZOY face, XOY face rotate, obtain the diameter of bore of measured workpiece。When application this programme measures inner hole of workpiece diameter, only need two steps operations in theory, drastically increase measurement efficiency, save big measurement man-hour;And non-contact measuring head is arranged on lathe, utilizes the movement executing mechanism of lathe self to make gauge head rotate or translation, it may be achieved in machine accurate measurement。

Description

A kind of bore diameter measuring method based on noncontacting proximity sensor combination
Technical field
The present invention relates to geometric measurement field, particularly to a kind of bore diameter measuring method based on noncontacting proximity sensor combination。
Background technology
Along with the fast development of China's industrial manufacturing industry, main equipment effect in industrial manufacturing process becomes ever more important。Aero-Space, shipbuilding are made the fields such as warship, electromotor, turbine and are required for the geometric measurement technology of large-scale workpiece as effective support。At present, measurement for large-scale workpiece, except adopting the measurement technology such as traditional large-scale micrometer, universal comparator, Abbe horizontal metroscope, dial gauge and air-gauge, novel measuring method also has a lot, currently mainly there are transit survey, total station survey, tracker measurement, two-frequency laser interferometer measurement, articulated type coordinate machine, indoor GPS etc.。But, these measurement technology are mainly used in the outside dimension of large-scale workpiece and measure, and measure for relative closure and complicated inside dimension and have but been difficult to。
For large-scale workpiece in machine accurate measurement, the measurement technology in hole is always up a difficult problem for China's industry manufacture field。At present, it is primarily present following difficult point:
1. measure the operational issue of instrument。Inside diameter measurement is due to by space and tested quantitative limitation, it is impossible to only simply installs in outside measuring as outside dimension and just can measure, says nothing of and automatically measure。
2. the problem of certainty of measurement。Along with the fast development of science and technology, industrial manufacturing industry is more and more higher to the performance requirement of main equipment。How to realize the aperture accurate measurement of large-scale workpiece, be always up problem demanding prompt solution。
3. about the problem measuring rapidity。On-machine measurement can be prevented effectively from the carrying problem of large-scale workpiece, thus saving a large amount of man-hour。But, still there is rapidity problem in on-machine measurement。It is processed as example, after a massive engine cabinet bulk is lifted on platen, for the ease of manually using measurement device, it is necessary to build scaffold with marine engine casing。Equal expense when paying with skiver that the dismounting of this scaffold is consuming time, greatly have impact on working (machining) efficiency and cost。Therefore, seek bore diameter measuring method fast and effectively to be of great immediate significance。
It is noted that the data consulted with regard to author, do not solve the bore diameter measuring method of above difficult point at present simultaneously。
Summary of the invention
The invention provides a kind of bore diameter measuring method based on noncontacting proximity sensor combination, the present invention adopts definite value comparative measurement method, it is possible to measure the diameter of bore of large-scale workpiece rapidly and accurately, described below:
A kind of bore diameter measuring method based on noncontacting proximity sensor combination, described method includes:
First the main shaft of dual sensor gauge head is arranged in the mechanism with translation function, forms the measurement system of complete set, be placed in measured workpiece;
During measurement, it is desirable to the measurement optical axis of two sensors on dual sensor gauge head is point-blank;
Dual sensor gauge head first rotates in ZOY face, after translate in XOY face, obtain the diameter of bore of measured workpiece。
Described dual sensor gauge head successively rotates in ZOY face, translates in XOY face, obtain the process of the diameter of bore of measured workpiece particularly as follows:
Dual sensor gauge head rotates on ZOY face, and the displacement data that sensor records produces the change changed from small to big again from large to small, and stop operating dual sensor gauge head at the minima place of the displacement data recorded, and optical axis is on the parallel plane in XOY face;
Dual sensor gauge head translates on XOY face, and the displacement data that sensor records is by change from large to small again of changing from small to big, and the maximum of the displacement data recorded, for the diameter of bore of measured workpiece。
In another embodiment, a kind of bore diameter measuring method based on noncontacting proximity sensor combination, described method includes:
First the main shaft of dual sensor gauge head is arranged in the mechanism with translation function, forms the measurement system of complete set, be placed in measured workpiece;
During measurement, it is desirable to the measurement optical axis of two sensors on dual sensor gauge head is point-blank;
Dual sensor gauge head successively in ZOY face, XOY face rotate, obtain the diameter of bore of measured workpiece。
Described dual sensor gauge head successively in ZOY face, XOY face rotate, obtain the process of the diameter of bore of measured workpiece particularly as follows:
Dual sensor gauge head rotates on ZOY face, and the displacement data that sensor records produces the change changed from small to big again from large to small, and stop operating dual sensor gauge head at the minima place of the displacement data recorded, and optical axis is on the parallel plane in XOY face;
Dual sensor gauge head rotates on the parallel plane in XOY face, measures displacement data and change procedure from big to small again occurs from small to large, and the maximum of the displacement data recorded, for the diameter of bore of measured workpiece。
Technical scheme provided by the invention provides the benefit that:
1) non-cpntact measurement: contact type measurement generally requires that operator are positioned at operation near measurement key element, reading or guiding, is difficulty with automatic measurement。What this programme adopted is contactless definite value comparative measurement method, and non-contact measuring head, away from measured object surface, improves the safety of measurement。
2) accuracy of detection is high: when adopting high precision laser displacement sensor, it is possible to measure the measured object distance to sensor quickly and accurately;Adopt definite value comparative measurement method, by the comparison of measured parameter Yu standard volume, it is achieved large scale, high-precision measurement;Noncontact, without measurement power, revolution time footpath beat on measurement result without features such as impacts, make Measuring origin reduce, be conducive to raising certainty of measurement。
3) simple to operate: when this programme measures inner hole of workpiece diameter, only need two steps operations in theory, drastically increase measurement efficiency, save big measurement man-hour。
4) on-machine measurement can be realized: be arranged on lathe by non-contact measuring head, utilize the movement executing mechanism of lathe self to make gauge head rotate or translation, it may be achieved in machine accurate measurement。
Accompanying drawing explanation
Fig. 1 is dual sensor gauge head schematic diagram when being placed in inner hole of workpiece;
Fig. 2 a is the structural representation of dual sensor gauge head;
Fig. 2 b is the schematic internal view of dual sensor gauge head;
Fig. 2 c is the structural representation of connection member;
Fig. 2 d is dual sensor gauge head front view;
Fig. 2 e is dual sensor gauge head left view semi-cutaway;
Fig. 3 a, Fig. 3 b be Circularhole diameter measurement model figure respectively;
Fig. 4 is the flow chart of a kind of bore diameter measuring method based on noncontacting proximity sensor combination;
Fig. 5 is another flow chart of a kind of bore diameter measuring method based on noncontacting proximity sensor combination。
In accompanying drawing, the list of parts representated by each label is as follows:
1: head-measuring rack;2: movable stand;
3: measurement apparatus;4: connection member;
11:U type groove;12: the first adjusting keys;
13: the first screws;14: the second adjusting keys;
15: the second screws;31: laser displacement sensor;
32: data process and display module;33: battery;
34: radio receiving transmitting module;41: inverted U groove;
42: cylindrical rod;43: connector;
44: the three screws;45: the four adjusting keys;
46: the four screws。
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail。
In order to measure the aperture size of large-scale workpiece rapidly and accurately, embodiments provide a kind of bore diameter measuring method based on noncontacting proximity sensor combination, realize the accurate measurement of measured workpiece diameter of bore, it is critical only that the position adjusting dual sensor gauge head, the laser beam axis of dual sensor gauge head will be allowed to overlap with a diameter of measured workpiece endoporus。For this, in conjunction with Fig. 1, embodiments provide two kinds of settling modes:
Embodiment 1
101: first the main shaft of dual sensor gauge head is arranged in the mechanism with translation function, form the measurement system of complete set, be placed in measured workpiece;
During measurement, it is desirable to the measurement optical axis of two sensors on dual sensor gauge head point-blank, namely two restraints Laser Measurement conllinear。This measuring method is independent of the dual sensor gauge head of certain model, as long as can realize the dual sensor gauge head of above-mentioned functions in art technology。
Dual sensor gauge head that the embodiment of the present invention adopt is given below, and this dual sensor gauge head includes: head-measuring rack 1, and head-measuring rack 1 is provided with movable stand 2, measurement apparatus 3 and connection member 4,
Head-measuring rack 1 includes: U-type groove 11, and the side of U-type groove 11 is provided with 4 the first adjusting keys 12, and opposite side is provided with 2 the first adjusting keys 12;Being additionally provided with 18 the first screws 13 in U-type groove 11, wherein 6 the first screws 13 and 6 the first adjusting keys 12 cooperate, for regulating the pose of the left and right directions of two laser displacement sensor 31 emergent rays;Another 12 the first screws 13 are used for fixing movable stand 2;The bottom surface of U-type groove 11 is provided with 4 the second adjusting keys 14 and 4 the second screws 15 that cooperate;
Connection member 4 includes: the inverted U groove 41 that be connected fixing with head-measuring rack 1;Inverted U groove 41 is connected to connector 43 by cylindrical rod 42, connector 43 is provided with the 3rd screw 44 of angle between adjusting connector 43 and inverted U groove 41, the central shaft that cylindrical rod 42 regulates as angle;Being additionally provided with 2 the 4th adjusting keys 45 and 2 the 4th screws 46 that cooperate on inverted U groove 41, second adjusting key the 14, second screw the 15, the 4th adjusting key 45 and the 4th screw 46 are for regulating the pose of the above-below direction of two laser displacement sensor 31 emergent rays;
Measurement apparatus 3 includes: be arranged on two laser displacement sensors 31 on movable stand 2, it is arranged on the data on head-measuring rack 1 to process and display module 32, laser displacement sensor 31 gathers displacement data, and transmit to data process and display module 32, data process and displacement data is processed by display module 32, and the data after processing are transmitted and shown。
By cooperating under combined effect between the device of above-mentioned gauge head, complete the measurement of large-scale workpiece inside dimension。When practical application, the inside dimension of various sizes of workpiece can be measured by adjusting the movable stand 2 position on head-measuring rack 1。
102: dual sensor gauge head first rotates in ZOY face, after translate in XOY face, obtain the diameter of bore of measured workpiece。
First, rotating the screw group on dual sensor gauge head, allow laser beam rotate around central shaft, make dual sensor gauge head rotate on ZOY face, the displacement data that sensor records will produce the change changed from small to big again from large to small。Stop operating dual sensor gauge head at the minima place of the displacement data recorded, it is believed that now optical axis axis is vertical with axially bored line in measured workpiece on ZOY face, and namely optical axis is on the parallel plane in XOY face。
It follows that make dual sensor gauge head translate on XOY face, the displacement data that sensor records is by change from large to small again of changing from small to big。The maximum of the displacement data recorded, it is simply that the diameter of bore of measured workpiece。
Embodiment 2
201: first the main shaft of dual sensor gauge head is arranged in the mechanism with translation function, form the measurement system of complete set, be placed in measured workpiece;
202: dual sensor gauge head successively in ZOY face, XOY face rotate, obtain the diameter of bore of measured workpiece。
With the description in embodiment 1, dual sensor gauge head, after ZOY face rotates, can make measurement light axial adjustment to the parallel plane in XOY face。Making dual sensor gauge head rotate on the parallel plane in XOY face, namely dual sensor gauge head rotates about the z axis, and measurement data still there will be from small to large change procedure from big to small again。Whether the maximum that lower surface analysis records is the diameter of bore of measured workpiece。
The schematic diagram that dual sensor gauge head rotates in XOY face, as shown in Figure 3。In figure, T represents the intersection point of axis of rotation and laser beam, and O represents the centre of gyration of gauge head, and A represents the home position of inner hole of workpiece。
Assume that the centre of gyration is without beating, be desirable measuring state。As OT, < during OA, as shown in Fig. 3-a, the track of T point is the roundlet O that in figure, dotted line represents, and now crossing A point has the tangent line of two round O。It is to say, in gauge head turning course, laser beam axis will necessarily through center of circle A, and the maximum recorded is exactly the diameter of endoporus。As OT > OA time, as shown in Fig. 3-b, the track of T point is the roundlet O that in figure, dotted line represents, and now A point is positioned at the inside of round O, justifies O and crosses the tangent line of A point and be absent from, and namely greatest measurement is not the diameter of endoporus。
In reality is measured, b method can pass through repetitive measurement take the method realization of maximum, because repetitive measurement is easy to OA occur > situation of OT。
Above the analysis of b method all be have ignored the impact beated in center, below analysis center beat the impact on measured value。If the center of optical axis is beated for e, when optical axis is by A point, beating in center has maximum effect to measured value, now maximum gaugeOwing to the center e that beats is um magnitude, radius r is dm magnitude, and therefore beat to D in centerMAXImpact be negligible。
The feasibility of a kind of bore diameter measuring method based on noncontacting proximity sensor combination that the embodiment of the present invention provides is verified below with concrete test, described below:
When the dual sensor gauge head adopting the embodiment of the present invention to provide, for embodiment 1, utilizing parallel moving mechanism to drive the translation in circular hole of dual sensor gauge head, the numerical value measuring line segment will occur from little change big, again from the process diminished greatly, the greatest measurement obtained is the diameter of endoporus。For embodiment 2, make dual sensor gauge head rotate at XOY plane, and write down the greatest measurement obtained that rotates a circle, complete one-shot measurement。Changing the position of gauge head, repetitive measurement more at random, the maximum taking repetitive measurement is the diameter of endoporus。
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment。
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention。

Claims (2)

1. the bore diameter measuring method based on noncontacting proximity sensor combination, it is characterised in that described method includes:
First the main shaft of dual sensor gauge head is arranged in the mechanism with translation function, forms the measurement system of complete set, be placed in measured workpiece;
During measurement, it is desirable to the measurement optical axis of two sensors on dual sensor gauge head is point-blank;
Dual sensor gauge head first rotates in ZOY face, after translate in XOY face, obtain the diameter of bore of measured workpiece;
Wherein, described dual sensor gauge head successively rotates in ZOY face, translates in XOY face, obtain the process of the diameter of bore of measured workpiece particularly as follows:
Dual sensor gauge head rotates on ZOY face, and the displacement data that sensor records produces the change changed from small to big again from large to small, and stop operating dual sensor gauge head at the minima place of the displacement data recorded, and optical axis is on the parallel plane in XOY face;
Dual sensor gauge head translates on XOY face, and the displacement data that sensor records is by change from large to small again of changing from small to big, and the maximum of the displacement data recorded, for the diameter of bore of measured workpiece。
2. the bore diameter measuring method based on noncontacting proximity sensor combination, it is characterised in that described method includes:
First the main shaft of dual sensor gauge head is arranged in the mechanism with translation function, forms the measurement system of complete set, be placed in measured workpiece;
During measurement, it is desirable to the measurement optical axis of two sensors on dual sensor gauge head is point-blank;
Dual sensor gauge head successively in ZOY face, XOY face rotate, obtain the diameter of bore of measured workpiece;
Wherein, described dual sensor gauge head successively in ZOY face, XOY face rotate, obtain the process of the diameter of bore of measured workpiece particularly as follows:
Dual sensor gauge head rotates on ZOY face, and the displacement data that sensor records produces the change changed from small to big again from large to small, and stop operating dual sensor gauge head at the minima place of the displacement data recorded, and optical axis is on the parallel plane in XOY face;
Dual sensor gauge head rotates on the parallel plane in XOY face, measures displacement data and change procedure from big to small again occurs from small to large, and the maximum of the displacement data recorded, for the diameter of bore of measured workpiece。
CN201310244720.8A 2013-06-19 2013-06-19 A kind of bore diameter measuring method based on noncontacting proximity sensor combination CN103278100B (en)

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CN104279971A (en) * 2014-10-20 2015-01-14 贵阳新天光电科技有限公司 Bi-chord method for measuring diameter of cylinder hole through electric eye measuring device of universal length measuring gauge
CN104776807B (en) * 2015-03-30 2018-01-12 天津大学 A kind of bore diameter measuring method based on the dislocation combination of laser triangulation displacement transducer
CN104913742B (en) * 2015-06-05 2018-01-12 天津大学 A kind of measuring method of two plane included angles based on ray cluster
CN104913741A (en) * 2015-06-05 2015-09-16 天津大学 Ray-cluster-based method for measuring aperture and tilt angle of workpiece at free station
JP6206527B2 (en) * 2016-03-16 2017-10-04 横浜ゴム株式会社 Device for measuring the inner circumference of a circular member
CN105758321B (en) * 2016-05-04 2018-04-10 安徽工业大学 Train wheel wheelboss inner hole diameter laser measuring system and its measuring method
CN106152956B (en) * 2016-09-23 2019-05-21 苏州蓝王机床工具科技有限公司 A kind of laser inside diameter measuring instrument
CN107014302B (en) * 2017-05-22 2019-03-22 安徽工业大学 A kind of scaling method of train wheel wheelboss inner hole diameter laser measurement sensor position
CN108195295B (en) * 2018-01-31 2019-11-01 漳州职业技术学院 A kind of ball line slideway auxiliary raceway radius On-line Measuring Method
CN111220097B (en) * 2020-01-17 2021-03-19 中国科学院长春光学精密机械与物理研究所 Optical detection device and optical detection method for coaxiality machining error of shaft hole

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