CN104392062A - Method of determining size of block blank according to parts three-dimensional model - Google Patents
Method of determining size of block blank according to parts three-dimensional model Download PDFInfo
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Abstract
The invention belongs to machining techniques and relates to a modified method of determining the size of a block blank according to a parts three-dimensional model. The method is characterized in that a step of determining the size of a block blank includes importing the three-dimensional model, determining allowance of the block blank, extracting geometric spatial extreme values of the parts three-dimensional model and calculating the size of the block blank. The modified method has the advantages that data sources are unified, information loss is prevented, error chances are slimmed, a blank model and a design model are visualized, the process of extracting geometric information of the models is simplified, and efficiency of extracting the geometric information is improved.
Description
Technical field
The invention belongs to Machining Technology, relate to the improvement to determining block material blank dimension method according to three-dimensional part model.
Background technology
At present, China's machine industry generally based on two-dimensional engineering graphic, three-dimensional model is auxiliary manufacture and design pattern.The dimensioning of technique department when receiving design document all with engineering drawing is as the criterion, and by calculating the physical dimension of bar needed for part in drawing to the markup information of the contour dimension of different views, thus is supplied to supply department as the foundation of getting the raw materials ready.There is following shortcoming in the method:
1, data source is not unique.Existing technique woollen Design Mode is that the two-dimensional engineering drawing provided according to designer calculates, experienced by three-dimensional model therebetween and be designed into this process of two-dimensional engineering drawing (namely three-dimensional to two dimension), data mode there occurs transformation, cause the disappearance of information and the increase of working link, which increases the probability occurring mistake.
2, the form of expression is not directly perceived.Can not directly embody intuitively on three-dimensional model woollen model and former design a model between relation.
3, model geometric information extraction process is loaded down with trivial details.Cannot on three-dimensional model the geological information of extracting directly model, can only by converting the dimension information of two-dimensional engineering drawing transfer components to, the extraction efficiency of geological information is low.
Summary of the invention
The object of the invention is: a kind of method determining block material blank dimension according to three-dimensional part model proposing improvement, so that uniform data source, prevents loss of learning, reduce the probability occurring mistake; The intuitive realizing woollen model and design a model; Simplified model Picking up geometry information process, improves the extraction efficiency of geological information.
Technical scheme of the present invention is: the method determining block material blank dimension according to three-dimensional part model, is characterized in that: determine that the step of block material blank dimension is as follows:
1, three-dimensional model imports:
1.1, in UG software platform, blank three-dimensional system of coordinate is created;
1.2, the three-dimensional model of part is imported in the blank three-dimensional system of coordinate created, three-dimensional model coordinate system is overlapped with blank three-dimensional system of coordinate;
2, the surplus of block material blank is determined: block material blank allowance is: length surplus △ L=0.3 ~ 9.5mm, width surplus △ W=0.3 ~ 9.5mm, altitude margin △ H=0.3 ~ 9.5mm;
3, part model geometric space extreme value computing block material blank dimension is extracted:
3.1, the point on three-dimensional model is obtained at the minimum value Xmin of blank three-dimensional system of coordinate X-direction and maximal value Xmax;
3.2, the point on three-dimensional model is obtained at the minimum value Ymin of blank three-dimensional system of coordinate Y direction and maximal value Ymax;
3.3, the point on three-dimensional model is obtained at the minimum value Zmin of blank three-dimensional system of coordinate Z-direction and maximal value Zmax;
3.4, the block material blank dimension of computation model:
Length L=Xmax-Xmin+2 × △ the L of block material blank;
Width W=Ymax-Ymin+2 × △ W of block material blank;
Height H=Zmax-Zmin+2 × △ H of block material blank.
Advantage of the present invention is: a kind of method determining block material blank dimension according to three-dimensional part model proposing improvement, has unified data source, has prevented loss of learning, reduces the probability occurring mistake; The intuitive achieving woollen model and design a model; Simplify model geometric information extraction process, improve the extraction efficiency of geological information.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that designs a model of first embodiment of the invention.
Fig. 2 is the block material blank dimension schematic diagram designed a model shown in Fig. 1.
Fig. 3 is the schematic diagram that designs a model of second embodiment of the invention.
Fig. 4 is the block material blank dimension schematic diagram designed a model shown in Fig. 3.
Embodiment
Below the present invention is described in further details.Determine the method for block material blank dimension according to three-dimensional part model, it is characterized in that: determine that the step of block material blank dimension is as follows:
1, three-dimensional model imports:
1.1, in UG software platform, blank three-dimensional system of coordinate is created;
1.2, the three-dimensional model of part is imported in the blank three-dimensional system of coordinate created, three-dimensional model coordinate system is overlapped with blank three-dimensional system of coordinate;
2, the surplus of block material blank is determined: block material blank allowance is: length surplus △ L=0.3 ~ 9.5mm, width surplus △ W=0.3 ~ 9.5mm, altitude margin △ H=0.3 ~ 9.5mm;
3, part model geometric space extreme value computing block material blank dimension is extracted:
3.1, the point on three-dimensional model is obtained at the minimum value Xmin of blank three-dimensional system of coordinate X-direction and maximal value Xmax;
3.2, the point on three-dimensional model is obtained at the minimum value Ymin of blank three-dimensional system of coordinate Y direction and maximal value Ymax;
3.3, the point on three-dimensional model is obtained at the minimum value Zmin of blank three-dimensional system of coordinate Z-direction and maximal value Zmax;
3.4, the block material blank dimension of computation model:
Length L=Xmax-Xmin+2 × △ the L of block material blank;
Width W=Ymax-Ymin+2 × △ W of block material blank;
Height H=Zmax-Zmin+2 × △ H of block material blank.
Embodiment 1, determines the block material blank dimension of part on certain gear-type pump.See Fig. 1,2,
1, three-dimensional model imports:
1.1, in UG software platform, blank three-dimensional system of coordinate is created;
1.2, the three-dimensional model of part is imported in the blank three-dimensional system of coordinate created, three-dimensional model coordinate system is overlapped with blank three-dimensional system of coordinate;
2, the surplus of block material blank is determined: block material blank allowance is: length surplus △ L=0.5mm, width surplus △ W=0.5mm, altitude margin △ H=0.5mm;
3, part model geometric space extreme value computing block material blank dimension is extracted:
3.1, the point on three-dimensional model is obtained in the minimum value-19.25 of blank three-dimensional system of coordinate X-direction and maximal value 19.25;
3.2, the point on three-dimensional model is obtained in the minimum value-15.75 of blank three-dimensional system of coordinate Y direction and maximal value 19.25;
3.3, the point on three-dimensional model is obtained in the minimum value 0 of blank three-dimensional system of coordinate Z-direction and maximal value 23;
3.4, the block material blank dimension of computation model:
Length L=Xmax-Xmin+2 × △ L=19.25-(-19.25)+2 × 0.5=39.5 of block material blank;
Width W=Ymax-Ymin+2 × △ W=19.25-(-15.75)+2 × 0.5=36 of block material blank;
Height H=Zmax-Zmin+2 × △ H=23-0+2 × 0.5=24 of block material blank.
Embodiment 2, determines the block material blank dimension of certain part housing.See Fig. 3,4,
1, three-dimensional model imports:
1.1, in UG software platform, blank three-dimensional system of coordinate is created;
1.2, the three-dimensional model of part is imported in the blank three-dimensional system of coordinate created, three-dimensional model coordinate system is overlapped with blank three-dimensional system of coordinate;
2, the surplus of block material blank is determined: block material blank allowance is: length surplus △ L=1.5mm, width surplus △ W=2mm, altitude margin △ H=1.75mm;
3, part model geometric space extreme value computing block material blank dimension is extracted:
3.1, the point on three-dimensional model is obtained in the minimum value-88 of blank three-dimensional system of coordinate X-direction and maximal value 65;
3.2, the point on three-dimensional model is obtained in the minimum value-65 of blank three-dimensional system of coordinate Y direction and maximal value 90;
3.3, the point on three-dimensional model is obtained in the minimum value-108 of blank three-dimensional system of coordinate Z-direction and maximal value 0;
3.4, the block material blank dimension of computation model:
Length L=Xmax-Xmin+2 × △ L=65-(-88)+2 × 1.5=156 of block material blank;
Width W=Ymax-Ymin+2 × △ W=90-(-65)+2 × 2=159 of block material blank;
Height H=Zmax-Zmin+2 × △ H=0-(-108)+2 × 1.75=111.5 of block material blank.
Claims (1)
1. determine the method for block material blank dimension according to three-dimensional part model, it is characterized in that: determine that the step of block material blank dimension is as follows:
1.1, three-dimensional model imports:
1.1.1, in UG software platform, blank three-dimensional system of coordinate is created;
1.1.2, by the three-dimensional model of part import in the blank three-dimensional system of coordinate created, three-dimensional model coordinate system is overlapped with blank three-dimensional system of coordinate;
1.2, the surplus of block material blank is determined: block material blank allowance is: length surplus △ L=0.3 ~ 9.5mm, width surplus △ W=0.3 ~ 9.5mm, altitude margin △ H=0.3 ~ 9.5mm;
1.3, part model geometric space extreme value computing block material blank dimension is extracted:
1.3.1 the point on three-dimensional model, is obtained at the minimum value Xmin of blank three-dimensional system of coordinate X-direction and maximal value Xmax;
1.3.2 the point on three-dimensional model, is obtained at the minimum value Ymin of blank three-dimensional system of coordinate Y direction and maximal value Ymax;
1.3.3 the point on three-dimensional model, is obtained at the minimum value Zmin of blank three-dimensional system of coordinate Z-direction and maximal value Zmax;
1.3.4, the block material blank dimension of computation model:
Length L=Xmax-Xmin+2 × △ the L of block material blank;
Width W=Ymax-Ymin+2 × △ W of block material blank;
Height H=Zmax-Zmin+2 × △ H of block material blank.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0879674A1 (en) * | 1996-11-07 | 1998-11-25 | Mitutoyo Corporation | Generation of measurement program in nc machining and machining management based on the measurement program |
| CN101561831A (en) * | 2008-04-16 | 2009-10-21 | 鸿富锦精密工业（深圳）有限公司 | Spare part outside measurement computing system and method |
| CN101673415A (en) * | 2008-09-08 | 2010-03-17 | 鸿富锦精密工业（深圳）有限公司 | System and method for generating three-dimensional part model |
| CN101877015A (en) * | 2009-04-28 | 2010-11-03 | 西安航空动力控制有限责任公司 | Three-dimensional labeling method for part processing |
-
2014
- 2014-12-05 CN CN201410739951.0A patent/CN104392062A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0879674A1 (en) * | 1996-11-07 | 1998-11-25 | Mitutoyo Corporation | Generation of measurement program in nc machining and machining management based on the measurement program |
| CN101561831A (en) * | 2008-04-16 | 2009-10-21 | 鸿富锦精密工业（深圳）有限公司 | Spare part outside measurement computing system and method |
| CN101673415A (en) * | 2008-09-08 | 2010-03-17 | 鸿富锦精密工业（深圳）有限公司 | System and method for generating three-dimensional part model |
| CN101877015A (en) * | 2009-04-28 | 2010-11-03 | 西安航空动力控制有限责任公司 | Three-dimensional labeling method for part processing |
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Application publication date: 20150304 |