CN102266958B - Flexible guide rail hole group machining method based on drilling equipment coordinate system determination - Google Patents
Flexible guide rail hole group machining method based on drilling equipment coordinate system determination Download PDFInfo
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- CN102266958B CN102266958B CN2011101888806A CN201110188880A CN102266958B CN 102266958 B CN102266958 B CN 102266958B CN 2011101888806 A CN2011101888806 A CN 2011101888806A CN 201110188880 A CN201110188880 A CN 201110188880A CN 102266958 B CN102266958 B CN 102266958B
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Abstract
The invention relates to a flexible guide rail hole group machining method based on drilling equipment coordinate system determination in the field of machining. The method comprises the following steps of: calculating a difference between an actual value and a preset value of an angle of a connecting line of two K holes to obtain a deflection angle gamma; and performing -gamma angular coordinate transformation on a coordinate system of a machining code and setting one of the K holes as a workpiece zero point so as to eliminate deflection error. By the flexible guide rail hole group machining method, system error of the deflection angle between a machine coordinate system and a workpiece coordinate system can be overcome conveniently, and high-precision and high-efficiency running of the equipment can be realized.
Description
Technical field
What the present invention relates to is the method in a kind of Machining Technology field, specifically is a kind of flexible guide rail hole crowd's processing method of confirming based on the drilling device coordinate system.
Background technology
It is mechanical coordinate system and workpiece coordinate system that existing machinery is processed normally used coordinate system, also is called the program coordinate system.(be assumed to be (X, Y, Z, B)) through in the mechanical coordinate of lathe system, being provided with a fixing reference point.The effect of this reference point mainly is to be used for to location of lathe itself.Because no matter which position knife rest rests on after each start, system all is set at current location (0,0,0; 0), certainly will cause the disunity of benchmark like this, return (have be called clear point) so the first step of each start is operating as reference point, just through confirming (X; Y, Z B) confirms initial point (0; 0,0,0).The initial point of general Digit Control Machine Tool is the fixed coordinate system initial point that manufacturer is provided with when producing lathes, and is general all at the extreme position of coordinate system, also is the detection reference of lathe.
Workpiece coordinate system (Workpiece Coordinate System) is fixed in the cartesian coordinate system on the workpiece.The coordinate system that uses in processing work is called workpiece coordinate system.When workpiece after fixing on the lathe, workpiece initial point and machine origin have also just had the position relation of confirming, promptly the deviation of two origins of coordinates is just definite.This will the measuring workpieces initial point and machine origin between distance.This deviate normally by the machine operation person under manual operation, through the workpiece calibration head or bump that the mode of cutter measures.This measured value can be pre-stored in the digital control system or be programmed in the procedure; Add man-hour the workpiece initial point and the deviate of machine origin just be added to workpiece coordinate automatically and fasten; Make digital control system confirm the coordinate figure of workpiece, realize the automatic processing of part according to lathe coordinate system.
The automatic drilling equipment of flexible guide rail is a kind of portable automatic equipment that is mainly used in aircraft assembling drilling.General fuselage and wing all have a large amount of mild curved surfaces; Flexible guide rail drilling system directly is fixed on aircraft surfaces carries out drilling; Can replace five traditional drilling equipment; Have characteristics such as cost is low, in light weight, automaticity is high, easy to use, be widely used in the automatic drilling of wing and fuselage assembling.The like product of this equipment can also be widely applied to the multiple processing and the detection of all kinds of mild large curved surfaces, like milling, drilling, welding, measurement etc.
To the particularity of flexible guide rail equipment, promptly workpiece can not be realized accurate location on the XY plane during clamping, so that the corner (around the rotation of Z axle) of C direction occurs, needs its unique process that workpiece coordinate system is set of design.The X axle of workpiece coordinate system (coordinate system of promptly programming) and Y axle are not parallel with the X axle Y axle of lathe coordinate system respectively, thereby have produced a corner γ.
Prior art can realize three-dimensional system of coordinate is carried out revisal, or sets up off-gauge rectangular coordinate system according to certain positioning reference.But relate to the flexible drilling of specialized application, particularly utilize correction method no any record temporarily in flexible rail processing group hole in aircraft skin.Wherein crucial technology is a method of on curved surface, setting up workpiece coordinate system.Therefore, set up feasible, easy-to-use, the flexible rail crowd hole forming method efficiently of a cover, become the task of top priority in aircraft assembling field.
Summary of the invention
The present invention is directed to the above-mentioned deficiency that prior art exists; A kind of flexible guide rail hole crowd's processing method of confirming based on the drilling device coordinate system is provided; Help overcoming the systematic error that there are the drift angle in lathe coordinate system and workpiece coordinate system, realize high accuracy, the high efficiency running of equipment.
The present invention realizes through following technical scheme, the present invention includes following steps:
The first step, confirm lathe coordinate system: make X axle, the Y axle self-zeroing of lathe, after each machine spindle was confirmed zero point, each direction of principal axis can be confirmed lathe coordinate system at this moment according to the direction that the direction of each restriction of equipment itself be spool;
Confirming and data acquisition of second step, via hole coordinate: two K holes are the fabrication hole of planning in advance; Fix with crowd to be processed hole relative position; In the processing preparatory stage, measure two physical locations of hole on workpiece, and write down the angle γ 2 of two hole lines and lathe X axle.
Described physical location is meant: X axle, Y axle with lathe are the two-dimensional coordinate of coordinate system;
The 3rd step, eliminate C to declination error: the angle γ 1 of X axle in the line through two K holes in the calculating processing code and the programming coordinate system; Obtain deflection angle γ=γ 2-γ 1; Be drift angle, workpiece location to be adjusted; Coordinate system through to machining code is done-conversion of γ angular coordinate, and sets one of them K hole as workpiece zero point, then realizes the elimination of offset error.
Compared with prior art, technological merit of the present invention is: be applicable to the crowd hole processing on mild big surface, be particularly useful for the crowd hole processing on aircraft skin surface.The present invention makes location, three-dimensional hole, is converted into the crowd hole orientation problem of two dimensional surface, has simplified calculation procedure, has improved working (machining) efficiency.
Description of drawings
Fig. 1 lathe coordinate system and workpiece coordinate system graph of a relation.
Fig. 2 embodiment flow chart.
The specific embodiment
Elaborate in the face of embodiments of the invention down, present embodiment provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment being to implement under the prerequisite with technical scheme of the present invention.
Embodiment
As shown in Figure 1; The present embodiment applied environment comprises: workpiece 1 is the lathe coordinate system relevant with lathe hardware with apparatus processing scope 2,3, and 4 is the workpiece coordinate system relevant with workpiece; The value 5 at γ angle is the value of deflection angle; Be the angle of Xm and Xp, 6 is a cohort hole to be processed, and 7 and 8 are respectively K hole, two technology location.
As shown in Figure 2, the present embodiment process comprises:
The first step, each returns zero process, confirms lathe coordinate system: make X axle, the Y axle self-zeroing of lathe, after each machine spindle was confirmed zero point, each direction of principal axis can be confirmed lathe coordinate system at this moment according to the direction that the direction of each restriction of equipment itself be spool;
Confirming and data acquisition of second step, via hole coordinate: two K holes are the fabrication hole of planning in advance, fix with crowd to be processed hole relative position.Processing the preparatory stage in, utilize checkout equipment, measure two physical locations of hole on workpiece, and with variable with its record.
The 3rd step, eliminate C to declination error: the actual value through calculating two K hole line angles and the difference of preset value; Obtain deflection angle γ; Be specially:,, should have two technology locating holes on the workpiece for confirming the position in crowd to be processed hole according to technological requirement; With in reality processing, the relative position in these two fabrication holes and crowd to be processed hole is a strict conformance in digital-to-analogue.The angle γ 1 of X axle in the line in these two holes and the coordinate system of programming calculates in elder generation's in digital-to-analogue (or in machining code); In the processing preparatory stage, measure two physical locations of hole on workpiece, afterwards in the hope of the angle γ 2 of two hole lines and lathe X axle.Both difference γ=γ 2-γ 1 is drift angle, workpiece location to be adjusted.
At last the original program coordinate system is done-conversion of γ angular coordinate, and set one of them K hole as workpiece zero point.So far, lathe coordinate system and workpiece coordinate system are confirmed to finish in the automatic drilling equipment of flexible guide rail, and offset error is eliminated.
Present invention focuses on flexible guide rail drilling device coordinate system and confirm method.Owing to adopted technique scheme, make location, three-dimensional hole, be converted into the crowd hole orientation problem of two dimensional surface, simplified calculation procedure, improved working (machining) efficiency.
Described flexible guide rail hole crowd's processing method has been applied on the automatic void formers of the special-purpose flexible rail of aircraft, and has obtained effect preferably.Not only solve curved surface crowd hole orientation problem, also improved the boring positioning accuracy simultaneously.
Claims (1)
1. flexible guide rail hole crowd's processing method of confirming based on the drilling device coordinate system is characterized in that, may further comprise the steps:
The first step, confirm lathe coordinate system: make X axle, the Y axle self-zeroing of lathe, after each machine spindle was confirmed zero point, each direction of principal axis can be confirmed lathe coordinate system at this moment according to the direction that the direction of each restriction of equipment itself be spool;
Confirming and data acquisition of second step, via hole coordinate: two K holes are the fabrication hole of planning in advance; Fix with crowd to be processed hole relative position; In the processing preparatory stage, measure two physical locations of hole on workpiece, and write down the angle γ 2 of two hole lines and lathe X axle;
The 3rd step, eliminate C to declination error: the angle γ 1 of X axle in the line through two K holes in the calculating processing code and the programming coordinate system; Obtain deflection angle γ=γ 2-γ 1; Be drift angle, workpiece location to be adjusted; Coordinate system through to machining code is done-conversion of γ angular coordinate, and sets one of them K hole as workpiece zero point, then realizes the elimination of offset error;
Described physical location is meant: X axle, Y axle with lathe are the two-dimensional coordinate of coordinate system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101888806A CN102266958B (en) | 2011-07-07 | 2011-07-07 | Flexible guide rail hole group machining method based on drilling equipment coordinate system determination |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101888806A CN102266958B (en) | 2011-07-07 | 2011-07-07 | Flexible guide rail hole group machining method based on drilling equipment coordinate system determination |
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| CN102266958A CN102266958A (en) | 2011-12-07 |
| CN102266958B true CN102266958B (en) | 2012-11-28 |
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| CN103909283B (en) * | 2014-04-01 | 2016-03-02 | 大连理工大学 | A kind of antithesis small hole precision processing method |
| CN107009184A (en) * | 2016-01-28 | 2017-08-04 | 陕西飞机工业（集团）有限公司 | The digital-to-analogue localization method that a kind of part is repeatedly processed |
| CN105929798B (en) * | 2016-06-23 | 2018-11-30 | 清华大学 | Exit orifice automatic identification and operation unit distribution method in a kind of complex structural member |
| CN107491039B (en) * | 2017-08-17 | 2019-10-25 | 山西航天清华装备有限责任公司 | A kind of processing method guaranteeing servo valve body inner bore concentricity |
| CN108247422B (en) * | 2017-12-29 | 2020-12-18 | 成都弘佛科技有限公司 | Automatic alignment method for journal parts in numerical control machining machine tool |
| CN108127334B (en) * | 2018-01-04 | 2019-06-07 | 淮海工学院 | Holes machining path optimization method based on small-world network search |
| CN109108587B (en) * | 2018-10-31 | 2020-08-11 | 青岛淄柴博洋柴油机股份有限公司 | Machining process for main shaft hole of cutting chamber frame |
| CN111168099B (en) * | 2020-01-14 | 2021-06-08 | 西安稀有金属材料研究院有限公司 | Method for precisely machining multiple holes on workpiece by digital display milling and boring machine |
| CN111890080B (en) * | 2020-07-30 | 2022-07-19 | 哈尔滨锅炉厂有限责任公司 | Secondary alignment method for whole dense hole group |
| CN112518395B (en) * | 2020-11-11 | 2021-09-21 | 中国铁建重工集团股份有限公司 | F-shaped steel alignment positioning method |
| CN112558549B (en) * | 2021-02-09 | 2021-08-03 | 成都飞机工业（集团）有限责任公司 | Reference selection method for minimum hole site error in large-part group hole machining |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7384220B2 (en) * | 2004-01-06 | 2008-06-10 | The Boeing Company | Laser-guided coordination hole drilling |
| JP2005297112A (en) * | 2004-04-09 | 2005-10-27 | Fuji Heavy Ind Ltd | Biaxial hole machining method |
| CN101163375A (en) * | 2006-10-12 | 2008-04-16 | 得力富企业有限公司 | Method of drilling pilot hole of PC panel boring machine |
| JP5043480B2 (en) * | 2007-03-14 | 2012-10-10 | 日立ビアメカニクス株式会社 | Printed circuit board processing machine |
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