CN103302340A - Numerical control machining progressive interpolation method - Google Patents
Numerical control machining progressive interpolation method Download PDFInfo
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- CN103302340A CN103302340A CN2012100696697A CN201210069669A CN103302340A CN 103302340 A CN103302340 A CN 103302340A CN 2012100696697 A CN2012100696697 A CN 2012100696697A CN 201210069669 A CN201210069669 A CN 201210069669A CN 103302340 A CN103302340 A CN 103302340A
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Abstract
The invention provides a numerical control machining progressive interpolation method. A cutter for using is an end mill; the machining process comprises a side edge progressive interpolation process and a bottom edge progressive interpolation process. Compared with the row cutting and machining method of a traditional ball-end cutter, the bottom edge of a ball-end cutter and the machining surface are in contact, the numerical control machining progressive interpolation method has the characteristics of small contact area, low machining efficiency and the like. According to the numerical control machining progressive interpolation method provided by the invention, the side edge and the bottom edge of a commonly used end mill are in contact with the machining surface at the same time, the contact area is large, the efficiency is high, and the residual quantity is low.
Description
Technical field
The present invention relates to the Computerized Numerical Control processing technology field, relate in particular to the progressive interpolation of a kind of digital control processing.
Background technology
Edge strip, rib and the web class part of tradition processed complex curved surface adopt the capable cutting processing method of ball head knife more, cutter contacts with finished surface in regional area all the time in working angles, the result has caused cutter regional area serious wear, so that the extremely acute decline of cutting wear; Because the piece surface that row is cut after the processing generally all needs to carry out pincers worker polishing finishing, has increased unnecessary workload, most importantly the parts list layer tissue after polishing may produce burn-off phenomenon, affects surface quality and the part life of part.
Be subject to the impact of traditional three-axis machining thinking, the processing of a lot of curved surfaces is all adopted the three-dimensional row to cut processing or is adopted five coordinates fixedly pivot angle is capable and cuts processing, this class processing method is used more at the mould series products, its advantage is that programmed algorithm is simple, general CAD/CAM software just can be realized Processing Strategies, its shortcoming is that working (machining) efficiency is extremely low, and so frequently under the competitive pressure, its drawback exposes more obviously in model change; In addition, a lot of CAD/CAM softwares only have the three-dimensional row to cut or fixed pendulum angle row is cut Processing Strategies and carried out Machining of Curved Surface many years ago, because the performance of computer hardware does not at that time catch up with the software development demand, the develop rapidly that reaches computer hardware of improving along with latest edition CATIA V5 software, released now several multi-shaft interlocked Machining of Curved Surface strategy, for the realization of the progressive interpolation of digital control processing provides may.
Summary of the invention
Purpose of the present invention: provide a kind of digital control processing progressive interpolation, realize the high efficiency to part, low residual volume processing.
The purpose of the invention is to realize by following technical scheme: the cutter that the progressive interpolation of digital control processing provided by the invention uses is slotting cutter, is divided into the progressive Interpolation Process of side edge and the progressive Interpolation Process of shear blade in the process, and concrete steps are as follows:
Step 1: complex-curved edge strip, rib and web class parts fixation are fixed on the Digit Control Machine Tool platform;
Step 2: the numerical programming procedure when the numerical control program of establishment part curved surface position, becomes following form with the tool sharpening track definition:
(1) in the progressive Interpolation Process of side edge cutter shaft to parallel with the tangential direction on part to be processed surface;
(2) in the progressive Interpolation Process of shear blade cutter shaft to vertical with the tangential direction on part to be processed surface;
Step 3: call numerical control program, verify whether progressive track is reasonable, i.e. whether the distribution of cutter spacing enough removes residual volume substantially, if then finish process.
If residual volume is not removed in the distribution of cutter spacing substantially, then between two cutter spacing, increase a cutter spacing, residual volume is removed in milling.
Beneficial effect of the present invention is: adopt the ball head knife shear blade to contact with machined surface with respect to the capable cutting processing method of traditional ball head knife, touch area little, the characteristics such as working (machining) efficiency is low, the progressive interpolation of numerical control end mill of the present invention adopts the side edge of slotting cutter commonly used to contact simultaneously machined surface with shear blade, contact area is large, and efficient is high.
Description of drawings
Fig. 1 is numerical control end mill cutter structure schematic diagram of the present invention.
Fig. 2 is the effect contrast figure in the capable cutting processing method of traditional ball head knife and the progressive interpolation processing parts of the numerical control end mill of the present invention process.
The specific embodiment
1～2 couple of the present invention is described further below in conjunction with accompanying drawing, among the figure: the 1st, R, the 2nd at the bottom of the cutter, cutter shear blade, the 3rd, cutter side edge, the 4th, tool diameter, the 5th, residual surplus, the 6th when row is cut, the progressive interpolation of side edge is residual surplus, the 7th constantly, and the progressive interpolation of shear blade is residual surplus, the 8th constantly, ball head knife, the 9th, numerical control end mill, the 10th, part surface to be machined.
The progressive interpolation of digital control processing be exactly in process with cutter axis orientation parallel (or vertical) in the cutting point position of curved surface, the processing tolerance of utilizing curved surface reasonably distributing shaft realizes the envelope processing to curved surface to the processing capacity of (or radially) layering; Be actually by forming with curved surface mutually circumscribed cluster plane with the curved surface profile after the processing of the progressive interpolation of digital control processing, and ball head knife 8 row are cut profile after the processing and are actually and are formed by the cluster curve matching, therefore, the more traditional row of the progressive interpolation of digital control processing cut working (machining) efficiency must be high.
As shown in Figure 2, slotting cutter 9 is axially parallel with the tangential direction on part to be processed surface 10 in the progressive Interpolation Process of side edge, produces constantly residual surplus 6 of the progressive interpolation of side edge; Slotting cutter 9 is axially vertical with the tangential direction on part to be processed surface 10 in the progressive Interpolation Process of shear blade, produces constantly residual surplus 7 of the progressive interpolation of shear blade.
Residual surplus 5 was large when ball head knife 8 row blanking methods were cut for the row of part surface to be machined 10, the surface needs a large amount of later stage grinding process work guarantee surface roughnesses, the remained on surface surplus of the progressive Interpolation Process of side edge of the present invention be the progressive interpolation of side edge residual surplus 6 is little constantly, just can not need to polish if residual surplus is controlled in the requirement of surface roughness.
Adopt ball head knife 8 row to cut processing, because cutter shaft is to constant, residual surplus 5 adopts the method that adds solid matter cutter step pitch when reducing that piece surface is capable to be cut; And progressive interpolation axially changing with respect to the curvature of finished surface owing to cutter, can remove remnants so adopt minute method of cutter spacing processing: constantly residual surplus 6, the progressive interpolation of shear blade of the progressive interpolation of side edge be residual surplus 7 constantly, namely between two cutter spacing, increase a cutter spacing, be used for specially milling to remove residual volume.
Claims (3)
1. progressive interpolation of digital control processing, it is characterized in that: be divided into the progressive Interpolation Process of side edge and the progressive Interpolation Process of shear blade in the process, concrete steps are as follows:
Step 1: complex-curved part is fixed on the Digit Control Machine Tool platform;
Step 2: the numerical programming procedure becomes following form with the tool sharpening track definition:
(1) in the progressive Interpolation Process of side edge cutter shaft to parallel with the tangential direction on part to be processed surface;
(2) in the progressive Interpolation Process of shear blade cutter shaft to vertical with the tangential direction on part to be processed surface;
Step 3: call numerical control program, verify whether progressive track is reasonable, i.e. whether the distribution of cutter spacing enough removes residual volume substantially, if then finish process.
2. the progressive interpolation of digital control processing according to claim 1, it is characterized in that: the cutter that uses in the process is slotting cutter.
3. the progressive interpolation of digital control processing according to claim 1 is characterized in that: if residual volume is not removed in the distribution of cutter spacing substantially, then increase a cutter spacing between two cutter spacing, milling removal residual volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210069669.7A CN103302340B (en) | 2012-03-16 | 2012-03-16 | The progressive interpolation of a kind of digital control processing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210069669.7A CN103302340B (en) | 2012-03-16 | 2012-03-16 | The progressive interpolation of a kind of digital control processing |
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| CN103302340A true CN103302340A (en) | 2013-09-18 |
| CN103302340B CN103302340B (en) | 2016-04-27 |
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| CN201210069669.7A Expired - Fee Related CN103302340B (en) | 2012-03-16 | 2012-03-16 | The progressive interpolation of a kind of digital control processing |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103203594A (en) * | 2013-03-20 | 2013-07-17 | 沈阳飞机工业（集团）有限公司 | Numerical-control replenishing processing method for composite multi-profile tools |
| CN103537743A (en) * | 2013-10-05 | 2014-01-29 | 成都泛华航空仪表电器有限公司 | Multi-axis curved surface type numerically-controlled method for machining complicated curved surface part |
| CN105081425A (en) * | 2015-09-14 | 2015-11-25 | 江西洪都航空工业集团有限责任公司 | Machining method for machining angle-changeable profile on common milling machine |
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| CN101041224A (en) * | 2006-12-31 | 2007-09-26 | 西安工业大学 | Method and device of processing the contacting surface of the digital controlled lines |
| CN101428356A (en) * | 2008-09-17 | 2009-05-13 | 西安飞机工业（集团）有限责任公司 | Method for high-efficiency allowance-removing numerical control machining for groove-cavity structured part with corner |
| CN101658951A (en) * | 2009-09-10 | 2010-03-03 | 西安飞机工业（集团）有限责任公司 | Numerical control milling processing method of stud in laminated composite part |
| CN102266972A (en) * | 2011-07-20 | 2011-12-07 | 沈阳飞机工业（集团）有限公司 | Machining method for milling curved surface of titanium alloy part |
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Patent Citations (5)
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| CN1413790A (en) * | 2002-12-05 | 2003-04-30 | 西安交通大学 | Drum taper tool and method for side milling complex cambered centrifugal impeller using drum taper tool |
| CN101041224A (en) * | 2006-12-31 | 2007-09-26 | 西安工业大学 | Method and device of processing the contacting surface of the digital controlled lines |
| CN101428356A (en) * | 2008-09-17 | 2009-05-13 | 西安飞机工业（集团）有限责任公司 | Method for high-efficiency allowance-removing numerical control machining for groove-cavity structured part with corner |
| CN101658951A (en) * | 2009-09-10 | 2010-03-03 | 西安飞机工业（集团）有限责任公司 | Numerical control milling processing method of stud in laminated composite part |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103203594A (en) * | 2013-03-20 | 2013-07-17 | 沈阳飞机工业（集团）有限公司 | Numerical-control replenishing processing method for composite multi-profile tools |
| CN103203594B (en) * | 2013-03-20 | 2015-10-28 | 沈阳飞机工业（集团）有限公司 | Processing method is added in composite many types of frock numerical control |
| CN103537743A (en) * | 2013-10-05 | 2014-01-29 | 成都泛华航空仪表电器有限公司 | Multi-axis curved surface type numerically-controlled method for machining complicated curved surface part |
| CN103537743B (en) * | 2013-10-05 | 2017-01-04 | 四川泛华航空仪表电器有限公司 | The method of multiaxis Surface NC Machining complex curved surface parts |
| CN105081425A (en) * | 2015-09-14 | 2015-11-25 | 江西洪都航空工业集团有限责任公司 | Machining method for machining angle-changeable profile on common milling machine |
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| CN103302340B (en) | 2016-04-27 |
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