CN103557760A - Method for detecting space small-diameter inclined hole position degree on thin-wall curved surface - Google Patents
Method for detecting space small-diameter inclined hole position degree on thin-wall curved surface Download PDFInfo
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- CN103557760A CN103557760A CN201310507554.6A CN201310507554A CN103557760A CN 103557760 A CN103557760 A CN 103557760A CN 201310507554 A CN201310507554 A CN 201310507554A CN 103557760 A CN103557760 A CN 103557760A
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Abstract
The invention discloses a method for detecting the space small-diameter inclined hole position degree on a thin-wall curved surface. The method comprises the steps that a small hole extends out of a part through a grouping mandrel which can be in tight fit with the detected small hole, and the effective length of the detected portion can be lengthened at the same time; in addition, the mode that three coordinate measuring machine measuring heads are directly perpendicular to the scanning face is adopted to respectively conduct point collection in three directions and three cross sections of the mandrel, the error of the swing degree of the measuring heads is removed, the effective detection length is increased, and the error is removed; finally, the fitting axis is projected to an established datum plane, scanning data are directly associated with a datum namely the datum reference, and the scanning data are compared with a theoretical coordinate value to directly obtain the actual value of the position degree of the detected hole. The invention has the advantages of solving the difficult problem of inaccessible interference of the detected measuring heads and the part, removing the scale division limitation of the coordinate measuring heads, adopting the perpendicular point collection, removing the angle error, meanwhile, extending the central axis of the projected hole, increasing the detection effective length, and improving the detection accuracy.
Description
Technical field
The present invention relates to the detection field of space small diameter bore position degree, particularly space minor diameter inclined hole position degree detection method on a kind of thin-wall curved-surface.
Background technology
Minor diameter inclined hole in space on existing thin-wall curved-surface, aperture is less than Φ 3mm, and position degree detection method has two kinds:
A kind of is that the large I of three coordinate measuring machine gauge head reaches in aperture, utilizes the angle close with detecting angle of apertures in hole, to adopt a formation axle center and evaluate position degree in the accessible scale division value of three coordinate measuring machine; The shortcoming of this detection mode has two, the first gauge head is used approximate angle scanning, there is error with actual apertures angle, the effective sweep length in hole on the second thin-wall part is also shorter, axis and actual deviation that the point that surface sweeping goes out like this fits to are very large, in three coordinate measuring machine scanning process, the detected shorter error of position effective length is larger, this is universally recognized, also be that everybody avoids in detection as far as possible, in reality detects, often error can reach 0.2-1.0mm, or larger, and the repeated extreme difference repeatedly detecting.
Another kind is to utilize plug, interferes inaccessible aperture to detect to extend to outside hole gauge head and detected part and utilizes equally aforesaid way to adopt an evaluation.Detect like this because thin-wall hole effectively detects length or extend plug effective length extremely short, the axis of matching has very large deviation with true axis, on the other hand due to gauge head angle with detect inconsistent also existence of orifice angle and detect error.
Summary of the invention
The object of the invention is interfere and cannot detect an any angular position difficult problem in order to overcome three-dimensional coordinates measurement machine testing gauge head and detected part, this detection technique does not need three coordinate measuring machine gauge head can reach in detected aperture, do not need measuring head to show the angle consistent with measured axially bored line yet, when overcoming above two kinds of difficult problems, also the short impact of not examined effective length, can detect the position degree that spatial aperture on any thin-wall curved-surface is less than the minor diameter inclined hole of Φ 3mm, obtain measurement result really and accurately, spy provides space minor diameter inclined hole position degree detection method on a kind of thin-wall curved-surface.
The invention provides space minor diameter inclined hole position degree detection method on a kind of thin-wall curved-surface, it is characterized in that: space minor diameter inclined hole position degree detection method on described thin-wall curved-surface, by can with detected aperture can friction tight grouping plug, aperture is extended to part, and can extend the effective length that can be detected position simultaneously; Adopt in addition the mode of the directly vertical surface sweeping of three coordinate measuring machine gauge head to adopt respectively a little in three directions of plug and three cross sections, eliminate the error of gauge head throw, increase and effectively detect length, eliminate error; Finally the axis of matching being projected to a reference field establishing or reference datum is in cylindrical surface, making surface sweeping data and benchmark is reference data direct correlation, by the theoretical coordinate value with calculating, contrast, directly draw the position degree actual value of tested gaging hole.
On described thin-wall curved-surface, the concrete steps of space minor diameter inclined hole position degree detection method are as follows:
Step 1: according to detecting aperture, hole and tolerance value, design and manufactures grouping plug, plug grouping margin tolerance 0.02-0.04mm, and effective detection length is not less than 20mm while guaranteeing to use;
Step 2: according to the actual machining hole of part footpath apolegamy plug, detecting plug and tested gaging hole is wringing fit, has not allowed to rock, and detection plug is effectively adopted a length and is not less than 20mm;
Step 3: set up detection coordinates system, set up benchmark projection surface and with reference to projection surface in space coordinates according to corresponding benchmark;
Step 4: use three coordinate measuring machine effectively to adopt in a length and adopt a little at three different cross sections respectively at plug, each cross section is respectively on a left side, on, adopt a little at right three places, fit to afterwards circle, again three centers of circle are fitted to an axis afterwards, finally axis is extended and projected on the reference field or reference datum setting, draw coordinate figure (as Fig. 2);
Step 5: projection is shown to coordinate figure and theoretical coordinate value contrast, evaluate out position degree actual value.
Advantage of the present invention:
On thin-wall curved-surface of the present invention, space minor diameter inclined hole position degree detection method, has solved detection gauge head and part and has interfered an inaccessible difficult problem, can eliminate the restriction of three-coordinate measuring probe calibration simultaneously, adopts and vertically adopts a little, eliminates angular error; Extend projection hole central shaft, making to detect effective length increases, and has improved detection accuracy simultaneously.
Accompanying drawing explanation
Below in conjunction with drawings and the embodiments, the present invention is further detailed explanation:
Fig. 1 is that traditional approach detects limitation schematic diagram;
Fig. 2 is detection example part schematic diagram of the present invention;
Fig. 3 is that the present invention detects and adopts a schematic diagram.
Embodiment
Embodiment
The present embodiment provides space minor diameter inclined hole position degree detection method on a kind of thin-wall curved-surface, it is characterized in that: space minor diameter inclined hole position degree detection method on described thin-wall curved-surface, by can with detected aperture can friction tight grouping plug, aperture is extended to part, and can extend the effective length that can be detected position simultaneously; Adopt in addition the mode of the directly vertical surface sweeping of three coordinate measuring machine gauge head to adopt respectively a little in three directions of plug and three cross sections, eliminate the error of gauge head throw, increase and effectively detect length, eliminate error; Finally the axis of matching being projected to a reference field establishing or reference datum is in cylindrical surface, making surface sweeping data and benchmark is reference data direct correlation, by the theoretical coordinate value with calculating, contrast, directly draw the position degree actual value of tested gaging hole.
On described thin-wall curved-surface, the concrete steps of space minor diameter inclined hole position degree detection method are as follows:
Step 1: according to detecting aperture, hole and tolerance value, design and manufactures grouping plug, plug grouping margin tolerance 0.02-0.04mm, and effective detection length is not less than 20mm while guaranteeing to use;
Step 2: according to the actual machining hole of part footpath apolegamy plug, detecting plug and tested gaging hole is wringing fit, has not allowed to rock, and detection plug is effectively adopted a length and is not less than 20mm;
Step 3: set up detection coordinates system, set up benchmark projection surface and with reference to projection surface in space coordinates according to corresponding benchmark;
Step 4: use three coordinate measuring machine effectively to adopt in a length and adopt a little at three different cross sections respectively at plug, each cross section is respectively on a left side, on, adopt a little at right three places, fit to afterwards circle, again three centers of circle are fitted to an axis afterwards, finally axis is extended and projected on the reference field or reference datum setting, draw coordinate figure (as Fig. 2);
Step 5: projection is shown to coordinate figure and theoretical coordinate value contrast, evaluate out position degree actual value.
Claims (2)
1. minor diameter inclined hole position degree detection method in space on a thin-wall curved-surface, it is characterized in that: space minor diameter inclined hole position degree detection method on described thin-wall curved-surface, by can with detected aperture can friction tight grouping plug, aperture is extended to part, and can extend the effective length that can be detected position simultaneously; Adopt in addition the mode of the directly vertical surface sweeping of three coordinate measuring machine gauge head to adopt respectively a little in three directions of plug and three cross sections, eliminate the error of gauge head throw, increase and effectively detect length, eliminate error; Finally the axis of matching being projected to a reference field establishing or reference datum is in cylindrical surface, making surface sweeping data and benchmark is reference data direct correlation, by the theoretical coordinate value with calculating, contrast, directly draw the position degree actual value of tested gaging hole.
2. according to space minor diameter inclined hole position degree detection method on thin-wall curved-surface claimed in claim 1, it is characterized in that: on described thin-wall curved-surface, the concrete steps of space minor diameter inclined hole position degree detection method are as follows:
Step 1: according to detecting aperture, hole and tolerance value, design and manufactures grouping plug, plug grouping margin tolerance 0.02-0.04mm, and effective detection length is not less than 20mm while guaranteeing to use;
Step 2: according to the actual machining hole of part footpath apolegamy plug, detecting plug and tested gaging hole is wringing fit, has not allowed to rock, and detection plug is effectively adopted a length and is not less than 20mm;
Step 3: set up detection coordinates system, set up benchmark projection surface and with reference to projection surface in space coordinates according to corresponding benchmark;
Step 4: use three coordinate measuring machine effectively to adopt in a length and adopt a little at three different cross sections respectively at plug, each cross section is respectively on a left side, on, adopt a little at right three places, fit to afterwards circle, again three centers of circle are fitted to an axis afterwards, finally axis is extended and projected on the reference field or reference datum setting, draw coordinate figure;
Step 5: projection is shown to coordinate figure and theoretical coordinate value contrast, evaluate out position degree actual value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310507554.6A CN103557760A (en) | 2013-10-21 | 2013-10-21 | Method for detecting space small-diameter inclined hole position degree on thin-wall curved surface |
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| CN201310507554.6A CN103557760A (en) | 2013-10-21 | 2013-10-21 | Method for detecting space small-diameter inclined hole position degree on thin-wall curved surface |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006775A (en) * | 2014-05-26 | 2014-08-27 | 哈尔滨东安发动机（集团）有限公司 | Method for measuring location degree of small hole |
| CN107490355A (en) * | 2017-08-15 | 2017-12-19 | 广东工业大学 | A kind of measuring method and device of hole axle concentricity |
| CN108562235A (en) * | 2018-05-04 | 2018-09-21 | 深圳朗呈医疗科技有限公司 | A kind of turbine blade cooling hole measuring device and measuring method based on three-dimensional imaging |
| CN109269454A (en) * | 2017-07-18 | 2019-01-25 | 中国航空工业集团公司济南特种结构研究所 | A kind of digitizing detection method of moulds of industrial equipment normal direction hole position accuracy |
| CN109373946A (en) * | 2018-11-21 | 2019-02-22 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of method of three coordinate measuring machine detection hole position degree |
| CN109387138A (en) * | 2017-08-02 | 2019-02-26 | 刘新 | A kind of novel thin wall pieces measurement method |
| CN110281017A (en) * | 2019-07-20 | 2019-09-27 | 衡水裕菖铸锻有限公司 | A kind of trephination of curved surface forging centre bore |
| CN110487230A (en) * | 2019-08-16 | 2019-11-22 | 成都和鸿科技有限公司 | A kind of detection method of heavy duty gas turbine stator blade air film hole |
| CN110553611A (en) * | 2019-07-26 | 2019-12-10 | 中国航空工业集团公司济南特种结构研究所 | tool normal hole position degree detection method based on three-coordinate measuring machine |
| CN111536929A (en) * | 2020-05-21 | 2020-08-14 | 中国第一汽车股份有限公司 | Method for detecting angle of small circular hole of thin-wall part of revolving body |
| CN113028954A (en) * | 2021-02-25 | 2021-06-25 | 中国空气动力研究与发展中心高速空气动力研究所 | Verticality detection device and detection method for pressure measuring bottom hole of wind tunnel pressure measuring test model |
| CN114234890A (en) * | 2021-12-09 | 2022-03-25 | 北京航天新立科技有限公司 | Method for measuring angle between axis and plane of short axis hole of thin-wall part |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006775A (en) * | 2014-05-26 | 2014-08-27 | 哈尔滨东安发动机（集团）有限公司 | Method for measuring location degree of small hole |
| CN104006775B (en) * | 2014-05-26 | 2016-08-24 | 哈尔滨东安发动机（集团）有限公司 | The measuring method of aperture position degree |
| CN109269454A (en) * | 2017-07-18 | 2019-01-25 | 中国航空工业集团公司济南特种结构研究所 | A kind of digitizing detection method of moulds of industrial equipment normal direction hole position accuracy |
| CN109387138A (en) * | 2017-08-02 | 2019-02-26 | 刘新 | A kind of novel thin wall pieces measurement method |
| CN107490355A (en) * | 2017-08-15 | 2017-12-19 | 广东工业大学 | A kind of measuring method and device of hole axle concentricity |
| CN108562235A (en) * | 2018-05-04 | 2018-09-21 | 深圳朗呈医疗科技有限公司 | A kind of turbine blade cooling hole measuring device and measuring method based on three-dimensional imaging |
| CN108562235B (en) * | 2018-05-04 | 2022-03-25 | 深圳朗呈医疗科技有限公司 | Turbine blade cooling hole measuring device and method based on three-dimensional imaging |
| CN109373946A (en) * | 2018-11-21 | 2019-02-22 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of method of three coordinate measuring machine detection hole position degree |
| CN110281017B (en) * | 2019-07-20 | 2021-09-28 | 衡水中裕铁信装备工程有限公司 | Drilling method for central hole of curved surface forging |
| CN110281017A (en) * | 2019-07-20 | 2019-09-27 | 衡水裕菖铸锻有限公司 | A kind of trephination of curved surface forging centre bore |
| CN110553611A (en) * | 2019-07-26 | 2019-12-10 | 中国航空工业集团公司济南特种结构研究所 | tool normal hole position degree detection method based on three-coordinate measuring machine |
| CN110487230A (en) * | 2019-08-16 | 2019-11-22 | 成都和鸿科技有限公司 | A kind of detection method of heavy duty gas turbine stator blade air film hole |
| CN111536929A (en) * | 2020-05-21 | 2020-08-14 | 中国第一汽车股份有限公司 | Method for detecting angle of small circular hole of thin-wall part of revolving body |
| CN111536929B (en) * | 2020-05-21 | 2021-11-23 | 中国第一汽车股份有限公司 | Method for detecting angle of small circular hole of thin-wall part of revolving body |
| CN113028954A (en) * | 2021-02-25 | 2021-06-25 | 中国空气动力研究与发展中心高速空气动力研究所 | Verticality detection device and detection method for pressure measuring bottom hole of wind tunnel pressure measuring test model |
| CN113028954B (en) * | 2021-02-25 | 2023-09-22 | 中国空气动力研究与发展中心高速空气动力研究所 | Perpendicularity detection device and detection method for pressure measurement bottom hole of wind tunnel pressure measurement test model |
| CN114234890A (en) * | 2021-12-09 | 2022-03-25 | 北京航天新立科技有限公司 | Method for measuring angle between axis and plane of short axis hole of thin-wall part |
| CN114234890B (en) * | 2021-12-09 | 2024-05-14 | 北京航天新立科技有限公司 | Method for measuring angle between axis and plane of short axis hole of thin-wall part |
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Application publication date: 20140205 |