CN102495585B - Method for generating glass polishing machining path of five-axis numerical control machine - Google Patents
Method for generating glass polishing machining path of five-axis numerical control machine Download PDFInfo
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- CN102495585B CN102495585B CN 201110439113 CN201110439113A CN102495585B CN 102495585 B CN102495585 B CN 102495585B CN 201110439113 CN201110439113 CN 201110439113 CN 201110439113 A CN201110439113 A CN 201110439113A CN 102495585 B CN102495585 B CN 102495585B
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Abstract
The invention relates to the technical field of computer aided design and manufacturing, in particular to a method for generating a glass polishing machining path of a five-axis numerical control machine. The method comprises the following steps of: A, constructing a geometric curved surface representing the shape of a product; B, designing a polishing shape curve on a plane and defining the section shape of a polishing grinding wheel; C, defining a cone tool according to the section shape of the polishing grinding wheel; D, generating a five-axis path of machining of a tool nose of the cone tool; E, simulating and previewing a machining effect and regulating the five-axis machining path to ensure the five-axis machining path to meet the design requirements of the product; F, mapping the machining path of the cone tool on the plane to the curved surface constructed in the step A; and G, converting the machining path of the tool nose of the cone tool into a polishing machining path of the grinding wheel. According to the invention, glass polishing is carried out by using the five-axis numerical control machine, patterns of the product have good consistency, and complex patterns can be machined. Meanwhile, the production efficiency is improved, the production cost is reduced and the development period of a novel pattern is shortened.
Description
Technical field
The present invention relates to computer-aided design (CAD) and manufacturing technology field, particularly a kind of generation method of glass polishing machining path of five-axis numerical control machine.
Background technology
Embossing glass articles processing is used in the processing of the products such as high-grade wine-bottle gradually.Compare with the decorative pattern of casting, the corner angle of grinding-wheel grinder flower are clear, shape freely, class that can improving product.Traditional embossing glass articles processing operates the buffing machine bed by the workman and realizes, this mode is higher to workman's technology and experience requirement, and production efficiency is lower, and the consistance of product decorative pattern is poor, and complicated decorative pattern is not easy to realize.Along with the development of society and the raising of consumer demand, traditional mode of production can not meet the needs of production gradually, needing to demand a kind of new mode of production urgently, the appearance of five-axle number control machine tool, just in time filled up this blank, but embossing glass articles machining path how to edit five-axle number control machine tool becomes a great problem.
Summary of the invention
Fundamental purpose of the present invention is to overcome now methodical deficiency, and a kind of generation method of glass polishing machining path of five-axis numerical control machine is provided, and realizes carrying out embossing glass articles processing with five-axle number control machine tool.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of generation method of glass polishing machining path of five-axis numerical control machine comprises:
Step a constructs the geometric curved surfaces of expression shape of product according to the geometric data of glass product;
Step b designs the pattern curve of mill flower in the plane, and goes out the cross sectional shape of mill flower emery wheel according to the mill flower shape definition of design;
Step c, the cone cutter, the processing effect that guarantees to bore the processing effect of cutter point of a knife and wheel grinding is consistent according to the definition one of the cross sectional shape of emery wheel;
Steps d is according to five axle paths of the mill flower pattern curve of design and the processing of cone knife-edge shape generating cone cutter point of a knife;
Step e by processing analog functuion preview processing effect, judges whether to meet design requirement.If there are differences with design shape, need to adjust five axle paths, until processing effect satisfies the product design requirement;
Step f is mapped to the cone cutter machining path on the plane on the curved surface that step a constructs, and generates the cone cutter five axle machining paths of curved surface;
Step g, the machining path that will bore the cutter point of a knife by the corresponding relation of cone cutter and emery wheel is converted to the machining path of wheel grinding.
Preferably, a kind of generation method of glass polishing machining path of five-axis numerical control machine, the generation method in five axle paths described in steps d is: cutter axis orientation and the degree of depth at some critical control point places on first assignment curve, on curve, the cutter axis orientation at other somes places and the degree of depth are obtained by cutter axis orientation and the degree of depth interpolation at adjacent two critical control point places, and its detailed process is:
D1. specify some critical control point on geometric locus, and set cutter axis orientation and the degree of depth of critical control point according to product requirement;
D2. according to the cutter axis orientation of each critical control point, calculate the elevation angle and the position angle of each critical control point.Wherein, the elevation angle refers to the angle between cutter axis orientation and surface level, and angular range is-90 °～+ 90 °; The position angle refers to cutter axis orientation at the projecting direction on surface level and the angle between X-axis, and angular range is 0 °～360 °; Invalid for vertical cutter axis orientation position angle, only represented by the elevation angle;
D3. according to the elevation angle of each critical control point and position angle respectively interpolation calculation go out the elevation angle and the position angle of each path point;
D4. calculate respectively the cutter axis orientation of each path point according to the elevation angle that obtains in d3 and position angle;
D5. go out the degree of depth of each path point according to the degree of depth interpolation calculation of each critical control point, generate five axle paths.
Preferably, the adjustment in five axle paths described in step e is to realize by position, direction and the degree of depth of adjusting critical control point.
Preferably, direction and the degree of depth at the critical control point place described in said method can be set and adjust by the shape of the section line of cone cutter on design plane.
Preferably, a kind of generation method of glass polishing machining path of five-axis numerical control machine, step g comprises:
F1. calculate curved surface U to V to the maximum length lu and the lv that wait parameter line;
F2. build a rectangle on the plane, path, two limits of rectangle are parallel with Y-axis with X-axis respectively, and the directions X of rectangle and the length of side of Y-direction are respectively lu and lv, the position consistency that rectangle is spent with respect to mill with respect to position and the curved surface of panel path;
F3. planar rectangular zone and a two-dimensional parameter zone are mapped, the corresponding parameter (0 of the lower-left angle point of rectangle, 0) point, the corresponding parameter (1 of the upper right angle point of rectangle, 1) point, panel path in rectangle according to the two-dimensional coordinate of each path point can obtain one group of corresponding parameter value (u, v);
F4. (u v), can obtain the coordinate points of a correspondence on curved surface, be the path point coordinate on curved surface according to the two-dimensional parameter value of each path point of obtaining;
F5. the point of the path on curved surface place builds a local coordinate system, path point on curved surface is as the initial point of coordinate system, curved surface is in the normal direction of this some Z-direction as coordinate system, according to the product actual needs select curved surface the U of this point to wait parameter line tangentially as X-direction, then calculate the direction of Y-axis according to the telegoniometer of Z axis and X-axis; Perhaps select curved surface the V of this point to wait parameter line tangentially as Y direction, then calculate the direction of X-axis according to the telegoniometer of Z axis and Y-axis;
F6. with the cutter axis orientation of plane upper pathway point vector V(i, j, k) as the vector in respective path point place local coordinate system on curved surface, then this vector is converted to world coordinate system, be the cutter axis orientation at curved surface upper pathway point place.
Compared with prior art, the invention has the beneficial effects as follows: the generation method of glass polishing machining path of five-axis numerical control machine provided by the invention has realized carrying out with five-axle number control machine tool the processing of embossing glass articles, no longer rely on workman's manual skill and experience, the high conformity of product decorative pattern, and can realize the processing of intricate detail; Improve simultaneously production efficiency, reduced production cost, shortened the construction cycle of trendy fancy.
Description of drawings
Fig. 1 is the process flow diagram of the inventive method.
Fig. 2 is the curved surface schematic diagram of the expression shape of product that provides of the embodiment of the present invention.
Fig. 3 is the designed flat stone mill flower pattern curve schematic diagram of the embodiment of the present invention.
Fig. 4 is the mill flower emery wheel and cone knife-edge shape schematic diagram that the embodiment of the present invention sets.
Fig. 5 is the plane cone cutter five axle machining path schematic diagram that the embodiment of the present invention generates.
Effect schematic diagram when Fig. 6 is embodiment of the present invention processing simulation preview.
Fig. 7 is the curved surface cone cutter five axle machining path schematic diagram after embodiment of the present invention mapping is completed.
Fig. 8 is the final five axle mill flower machining path schematic diagram that generate of the embodiment of the present invention.
Fig. 9 is the process flow diagram of the five axle path generating methods that provide of the embodiment of the present invention.
Figure 10 be the specified curve critical control point of embodiment of the present invention prescription to the degree of depth overlook the effect schematic diagram.
Figure 11 be the specified curve critical control point of embodiment of the present invention prescription to the forward sight effect schematic diagram of the degree of depth.
Figure 12 is the schematic diagram of explaining all path point cutter axis orientations and the degree of depth on the curve that embodiment of the present invention interpolation calculation critical control point obtains.
Figure 13 is that the mapping method process flow diagram that the cutter machining path transfers curved surface processing path to is bored on the plane that the embodiment of the present invention provides.
Figure 14 explains that the cutter point of a knife machining path of boring that the embodiment of the present invention provides is converted to the schematic diagram that mill is spent emery wheel machining path method.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail: the process flow diagram of the generation method of a kind of glass polishing machining path of five-axis numerical control machine of the present invention illustrates the specific embodiment of the present invention according to the Programming Skills that grinds flower on vial as shown in Figure 1.
Step 102 is designed the pattern curve of mill flower in the plane, and goes out the cross sectional shape of mill flower emery wheel according to the mill flower shape definition of design.Fig. 3 shows is mill flower pattern curve in the present embodiment, and in Fig. 4,10 expressions is the mill flower emery wheel selected according to the mill flower shape of the present embodiment, and its grinding tapering is 110 °.
The process flow diagram of the five axle path generating methods that provide in embodiment of the present invention step 104 has been provided Fig. 9, and specific implementation process is as follows:
Step 902 according to the cutter axis orientation of each critical control point, calculates the elevation angle and the position angle of each critical control point.Wherein, the elevation angle refers to the angle between cutter axis orientation and surface level, and angular range is-90 °～+ 90 °; The position angle refers to cutter axis orientation at the projecting direction on surface level and the angle between X-axis, and angular range is 0 °～360 °; Invalid for vertical cutter axis orientation position angle, only represented by the elevation angle;
Step 904 calculates respectively the cutter axis orientation of each path point according to the elevation angle that obtains in step 903 and position angle;
Step 905 goes out the degree of depth of each path point according to the degree of depth interpolation calculation of each critical control point, generate five axle paths.Cutter axis orientation and the degree of depth of Figure 12 represents all path points that to be above-mentioned curve obtain according to the critical control point interpolation calculation.
Figure 13 has shown that plane cone cutter machining path that the embodiment of the present invention provides transfers the mapping method of curved surface processing path to, and specific implementation process is as follows:
Figure 14 explains that the cutter point of a knife machining path of boring that the embodiment of the present invention provides is converted to the method that mill flower grinding-wheel grinder is spent machining path: as shown in Figure 14, the path point pnt2 that the path point pnt1 of cone cutter is transferred to mill flower emery wheel, and the cutter axis orientation axis1 that will bore the cutter track footpath transfers the cutter axis orientation axis2 in mill flower emery wheel path to, thereby changed into the machining path of mill flower emery wheel by the cone cutter machining path on curved surface.
In sum, the present invention has realized carrying out with five-axle number control machine tool the processing of embossing glass articles, no longer relies on workman's manual skill and experience; With respect to manual operations, improved production efficiency, reduced production cost, shortened the construction cycle of trendy fancy, and the high conformity of converted products decorative pattern, be suitable for batch production.
Although above the present invention is had been described in detail, the invention is not restricted to this, those skilled in the art can carry out various modifications according to principle of the present invention.Therefore, all modifications of doing according to the principle of the invention all should be understood to fall into protection scope of the present invention.
Claims (5)
1. the generation method of a glass polishing machining path of five-axis numerical control machine, is characterized in that, its key step comprises:
Step a constructs the geometric curved surfaces of expression shape of product according to the geometric data of glass product;
Step b designs the pattern curve of mill flower in the plane, and goes out the cross sectional shape of mill flower emery wheel according to the mill flower shape definition of design;
Step c, the cone cutter, the processing effect that guarantees to bore the processing effect of cutter point of a knife and wheel grinding is consistent according to the definition one of the cross sectional shape of emery wheel;
Steps d, five axle paths according to the mill flower pattern curve of design and the processing of cone knife-edge shape generating cone cutter point of a knife, its generation method is: cutter axis orientation and the degree of depth at some key points places on first assignment curve, and on curve, the cutter axis orientation at other somes places and the degree of depth are obtained by cutter axis orientation and the degree of depth interpolation at adjacent two key point places;
Step e by processing analog functuion preview processing effect, judges whether to meet design requirement; If there are differences with design shape, need to adjust five axle paths, until processing effect satisfies the product design requirement;
Step f is mapped to the cone cutter machining path on the plane on the curved surface that step a constructs, and generates the cone cutter five axle machining paths of curved surface, and concrete grammar is as follows:
F1. calculate curved surface U to V to the maximum length lu and the lv that wait parameter line;
F2. build a rectangle on the plane, path, two limits of rectangle are parallel with Y-axis with X-axis respectively, and the directions X of rectangle and the length of side of Y-direction are respectively lu and lv, the position consistency that rectangle is spent with respect to mill with respect to position and the curved surface of panel path;
F3. planar rectangular zone and a two-dimensional parameter zone are mapped, the corresponding parameter (0 of the lower-left angle point of rectangle, 0) point, the corresponding parameter (1 of the upper right angle point of rectangle, 1) point, panel path in rectangle according to the two-dimensional coordinate of each path point can obtain one group of corresponding parameter value (u, v);
F4. (u v), can obtain the coordinate points of a correspondence on curved surface, be the path point coordinate on curved surface according to the two-dimensional parameter value of each path point of obtaining;
F5. the point of the path on curved surface place builds a local coordinate system, path point on curved surface is as the initial point of coordinate system, curved surface is in the normal direction of this some Z-direction as coordinate system, according to the product actual needs select curved surface the U of this point to wait parameter line tangentially as X-direction, then calculate the direction of Y-axis according to the telegoniometer of Z axis and X-axis; Perhaps select curved surface the V of this point to wait parameter line tangentially as Y direction, then calculate the direction of X-axis according to the telegoniometer of Z axis and Y-axis;
F6. with the cutter axis orientation of plane upper pathway point vector V(i, j, k) as the vector in respective path point place local coordinate system on curved surface, then this vector is converted to world coordinate system, be the cutter axis orientation at curved surface upper pathway point place;
Step g, the machining path that will bore the cutter point of a knife by the corresponding relation of cone cutter and emery wheel is converted to the machining path of wheel grinding.
2. the generation method of a kind of glass polishing machining path of five-axis numerical control machine according to claim 1 is characterized in that: the generation method in described five axle paths comprises:
D1. specify some critical control point on geometric locus, and set cutter axis orientation and the degree of depth of critical control point according to product requirement;
D2. according to the cutter axis orientation of each critical control point, calculate the elevation angle and the position angle of each critical control point; Wherein, the elevation angle refers to the angle between cutter axis orientation and surface level, and angular range is-90 °～+ 90 °; The position angle refers to cutter axis orientation at the projecting direction on surface level and the angle between X-axis, and angular range is 0 °～360 °; Invalid for vertical cutter axis orientation position angle, only represented by the elevation angle;
D3. according to the elevation angle of each critical control point and position angle respectively interpolation calculation go out the elevation angle and the position angle of each path point;
D4. calculate respectively the cutter axis orientation of each path point according to the elevation angle that obtains in d3 and position angle;
D5. go out the degree of depth of each path point according to the degree of depth interpolation calculation of each critical control point, generate five axle paths.
3. the generation method of a kind of glass polishing machining path of five-axis numerical control machine according to claim 1 and 2 is characterized in that: the cutter axis orientation at described key point place and the setting of the degree of depth are to realize by the section line shape of cone cutter on design plane.
4. the generation method of a kind of glass polishing machining path of five-axis numerical control machine according to claim 1 and 2 is characterized in that: the adjustment five axle machining paths described in step e are to realize by position, cutter axis orientation and the degree of depth of adjusting key point.
5. the generation method of a kind of glass polishing machining path of five-axis numerical control machine according to claim 4 is characterized in that: the cutter axis orientation at described key point place and the adjustment of the degree of depth are to realize by the section line shape of cone cutter on design plane.
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| CN102765136A (en) * | 2012-07-12 | 2012-11-07 | 深圳市常兴金刚石磨具有限公司 | Grinding machining method for small-sized drill bit |
| CN103513606A (en) * | 2013-07-09 | 2014-01-15 | 西北工业大学 | Method for generating optimal straight-line enveloping surface of free-form surface blade |
| CN103488125A (en) * | 2013-10-10 | 2014-01-01 | 昆山纯柏精密五金有限公司 | Tool control data generation method |
| CN109299514B (en) * | 2018-08-28 | 2023-06-16 | 天津大学 | Grinding wheel path generation method for grinding free curved surface by inclined shaft |
| CN110103142B (en) * | 2019-05-05 | 2021-12-21 | 广东省汉兴科技有限公司 | Intelligent grinding wheel switching method and device |
| CN114137904B (en) * | 2021-12-08 | 2023-07-14 | 北京精雕科技集团有限公司 | Path generation method for curved surface turning |
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| US20110007453A1 (en) * | 2009-07-08 | 2011-01-13 | Chen-Feng Hsieh | Method for forming a concavo-convex textured structure on a housing of an electronic device and related structure |
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| CN101308379A (en) * | 2007-05-17 | 2008-11-19 | 发那科株式会社 | Numerical control method for five-axis processing machine |
| CN101488017A (en) * | 2009-02-24 | 2009-07-22 | 上海奈凯电子科技有限公司 | Real-time control method of process tool route of numerical control machine based on machine vision |
| CN101893873A (en) * | 2009-04-06 | 2010-11-24 | Dmg电子有限公司 | Generation is used to control the method and apparatus of the control data of the cutter on the lathe |
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Effective date of registration: 20190109 Address after: 102308 No. 10 Yongan Road, Shilong Industrial Zone, Mentougou District, Beijing Patentee after: Beijing finishing impression science and technology Group Co., Ltd Address before: Room 1507 and 1508, Tianhangjian Business Building, 47 Fuxing Road, Haidian District, Beijing, 100036 Patentee before: Beijing Enterprising Persons Software Technology Co.,Ltd. |