Analysis of Cola Bottle Bottom Modeling Method

As shown in the figure, the surface of the bottom of the Coke bottle is mainly composed of a curved surface, and the shape is relatively complicated. Because it can't be done directly with solid modelling, the surface of the model is first made by the powerful surface modeling function of the CAXA manufacturing engineer, and then the concave model cavity is created by cutting off the material with the surface. The side surface of the bottom of the cola bottle can be generated with a grid surface. Since it consists of five identical parts, we only need to make a raised two section lines and a recessed section line, and then perform an annular array. You can get all the other protrusions and recesses of all section lines, and finally use the grid surface function to generate the surface. The bottom plane of the bottom of the Coke bottle is made using the "point + curve" method in the ruled surface. The advantage of this is that the two faces (the ruled surface and the mesh surface) can be used together with the parameter line when machining. Processing. Finally, using the upper mouth of the bottle as a standard, construct a cube entity, and then use the two faces of the bottom of the Coke bottle to cut out the unwanted parts, and we can get the concave cavity we require.