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US 2007/0182733 A1Published application
Three-dimensional cad system
AssigneeNsk Ltd.
InventorKenji Imanishi
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AssigneeNsk Ltd.
InventorKenji Imanishi
Estimating the term…
It is possible to match a parts model with a two-dimensional drawing. A parts model has shape changing elements whose shapes are changed before and after assembling and other common elements. Three-dimensional shape data on the shapes of the shape changing elements before assembling and their shapes after assembling and the shapes of the common elements are stored as three-dimensional shape data on the parts model in database 12. A calculation unit 14 sets a restriction condition to become a single part between the shapes of the shape changing elements before assembling and the shapes of the common elements for the three-dimensional shape data stored in the database 12 and sets a restriction condition to become a single part between the shapes of the shape changing elements after assembling and the shapes of the common elements, so that three-dimensional shape data is spread into the two-dimensional drawing according to the restriction condition and displayed on the screen of the display unit 16.
A two-dimensional drawings creation method of creating two-dimensional drawings based on a three-dimensional model by using a computer source including a processing device source, a memory source, an input device, and an interface, in which the processing device source executes a processing including a step of holding, as three-dimensional shape information of a parts model having a shape changing element whose shapes is changed before and after assembling and other common elements, three-dimensional information on the shape before assembling and the shape after assembling of the shape changing element and the shape of the common elements, a step of setting a restriction condition between the shape before assembling of the shape changing element and the shape of the common element to become a single part to each other, a step of setting a restriction condition between the shape after assembling of the shape changing element and the shape of the common elements to become a single part to each other, and a step of developing the held three-dimensional information into the two-dimensional drawing in accordance with each of the restriction conditions, based on the operation program of the memory source.
A three-dimensional CAD system including a data base that holds, as three-dimensional shape information of a parts model having a shape changing element whose shape is changed before and after assembling and other common elements, three-dimensional information on the shape before assembling and the shape after the assembling of the shape changing element and the shape of the common elements, and a calculation unit that sets a restriction condition between the shape changing element before assembling and the shape of the common elements to become a single part to each other, sets a restriction condition between the shape after assembling of the shape changing element and the shape of the common elements to become a single part to each other, and develops the three-dimensional shape information held in the data base into a two-dimensional drawing in accordance with each of the restriction conditions.
Dependencies are inferred from the claim text.