CAD/CAM integrate technology has been drawn to much a ttention and becomes one of the focus of the international academic and commerci al research, Through efforts nearly 10 years, remarkable progress has been made in...CAD/CAM integrate technology has been drawn to much a ttention and becomes one of the focus of the international academic and commerci al research, Through efforts nearly 10 years, remarkable progress has been made in the 3-dimension feature parametric modeling. UG, SOLIDWORK and MDT apply the se technology with respective features. However, no distinct development has bee n made in the digital models from geometric feature to manufacture feature. Prod uct information expression and the basic model frame of data exchange have been proposed based on STEP standards, but it is quite difficult to some extent ensur e the operability, due to the complexity in application. The models addressed in this paper divide the shared digital models (not data models) for product desig n and manufacture into five parts: ①Digital product 3D molding design; ②Digit al product technology process design; ③Digital product assembly design; ④Digit al product manufacture process design; ⑤Digital product management design. The resource model should not be included. And It should be a peripheral model i n product design; which is the innovative viewpoint of this paper. The core of above-mentioned five models is to access the digital model from the solid unit feature. Product definition should be determined on the basis of solid unit, and solid unit should follow the rules of "generation of machining processing", Therefore, the author also proposed the Constructing Cutting Geomet ry Method (CCG) in IMCC’2000. In this way, the integration of "forming - processing - assembling - machining - management" can be obtained. This is th e core originality of the paper.展开更多
The unit modular technique is one in which unit modules are prefabricated in a factory and then constructed at a construction site. That is why an important process, transport of unit module, is added in this techniqu...The unit modular technique is one in which unit modules are prefabricated in a factory and then constructed at a construction site. That is why an important process, transport of unit module, is added in this technique. However, it is not easy to transport a unit module that is high prefabrication ratio （prefab. ratio） （70-90%）, since the walls and interior and exterior materials installed in it can become broken when the unit module is fixed using general fixation tools, including ropes and fixing belts. When the external wall, windows, etc. are damaged during the transportation, the efficiency of unit modular method is deteriorated. Taking this into account, the purpose of this study is to develop an improved fixation device that is convenient for fixing a unit module with a high prefab, ratio to a vehicle and securing the safety while running. The L-type adapter block proposed in this study was evaluated the structural safety through simulation method. The result of the simulation is that it seems desirable to set the working load of the L-type adapter block as 15 kN for Case 1 and 30 kN for Case 2. Therefore, when the L-type adapter block is utilized under the conditions in which the same load is applied as in Case 2, it is expected that safety will be improved.展开更多
文摘CAD/CAM integrate technology has been drawn to much a ttention and becomes one of the focus of the international academic and commerci al research, Through efforts nearly 10 years, remarkable progress has been made in the 3-dimension feature parametric modeling. UG, SOLIDWORK and MDT apply the se technology with respective features. However, no distinct development has bee n made in the digital models from geometric feature to manufacture feature. Prod uct information expression and the basic model frame of data exchange have been proposed based on STEP standards, but it is quite difficult to some extent ensur e the operability, due to the complexity in application. The models addressed in this paper divide the shared digital models (not data models) for product desig n and manufacture into five parts: ①Digital product 3D molding design; ②Digit al product technology process design; ③Digital product assembly design; ④Digit al product manufacture process design; ⑤Digital product management design. The resource model should not be included. And It should be a peripheral model i n product design; which is the innovative viewpoint of this paper. The core of above-mentioned five models is to access the digital model from the solid unit feature. Product definition should be determined on the basis of solid unit, and solid unit should follow the rules of "generation of machining processing", Therefore, the author also proposed the Constructing Cutting Geomet ry Method (CCG) in IMCC’2000. In this way, the integration of "forming - processing - assembling - machining - management" can be obtained. This is th e core originality of the paper.
文摘The unit modular technique is one in which unit modules are prefabricated in a factory and then constructed at a construction site. That is why an important process, transport of unit module, is added in this technique. However, it is not easy to transport a unit module that is high prefabrication ratio （prefab. ratio） （70-90%）, since the walls and interior and exterior materials installed in it can become broken when the unit module is fixed using general fixation tools, including ropes and fixing belts. When the external wall, windows, etc. are damaged during the transportation, the efficiency of unit modular method is deteriorated. Taking this into account, the purpose of this study is to develop an improved fixation device that is convenient for fixing a unit module with a high prefab, ratio to a vehicle and securing the safety while running. The L-type adapter block proposed in this study was evaluated the structural safety through simulation method. The result of the simulation is that it seems desirable to set the working load of the L-type adapter block as 15 kN for Case 1 and 30 kN for Case 2. Therefore, when the L-type adapter block is utilized under the conditions in which the same load is applied as in Case 2, it is expected that safety will be improved.
