SeGuruCool
The Largest Independant Solid Edge Resource Outside UGS PLM
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SeGuruCool The Largest Independant Solid Edge Resource Outside UGS PLM |
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www.oocities.org/SeGuruCool  segurucool @ indiatimes.com |
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Cross Curve - Cross Breed CrossCurve : Creates a 3-D curve at the intersection of two curves. - Solid Edge Help. What does that mean ? Everyone knows, its always a point that is formed at the intersection of two curves. So how exactly does a curve forms at the interection of two other curves. Is it a cross-breed ? Well, CrossCurve is a powerful tool to draw a 3D curve. |  |
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What is a 3D Curve There are four other distinct ways Solid Edge allows you to draw curves : You need to key in x-, y- and z-coordinates of the points lying on the desired curve. In short, a 3D curve does not lie in a single plane, but it travels in 3D space. |
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How is a Cross Curve Different Cross curve formation is different from the aforesaid four methods, in that, it uses existing curves to form a new curve. The other four methods of curve formation do it from scratch, either by keying in point coordinates or picking points with mouse. |
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Significance of Cross Curve CrossCurve is actually bending of flat curves, wherein a flat (2D) curve bends another 2D curve to form a 3D curve. The two curves should necessarily lie in two different planes, preferably mutually perpendicular planes. In other words, if you project a CrossCurve onto the reference planes, it will create its component curves. |
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Applications of Cross Curve Take the case of a mountain bike handlebar. A severely indepth tutorial on creating this object using a CrossCurve is Here. |  |
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Mountain bike HandleBar Top view of the handlebar is as shown in figure. |  |
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HandleBar - Top View Drawing an appropriate curve in the x-y plane and sweeping a circle along it would result in a flat bar bent at various places. See figure. |  |
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HandleBar - Front View The front view shows that the handlebar is actually bent towards the ends. See figure |  |
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HandleBar - Flat Curves Begin with creating two flat curves in two mutually perpendicular planes. each flat curve represents a sort of standard view of the final handlebar. |  |
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HandleBar - Cross Curve A cross curve then easily be created using the two flat curves. In the adjacent figure, note how the crosscurve is not lying in any of the two planes of its component flat curves. The crosscurve travels in 3D space. |  |
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HandleBar - True Shape Creating a swept protrusion along this curve gives the true shape of the desired handle bar. | |
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Helmet WindShield It is not that only open curves be bent. It is possible to bend closed curves too. Take the case of the transperant windshield of a helmet shown in picture besides. |  |
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WindShield Surface This is a bent surface as shown. |  |
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The plane Surface The outline of the plane surface is a closed sketch. This sketch is drawn in a vertical plane ie. the curve is a 2D curve. |  |
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The Bending Curve The other curve that bends the closed curve is an arc. ie. the other (bender) curve is also a 2D curve. The second curve is drawn in a plane perpendicular to the plane of the earlier curve. |  |
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Bend the Curve Using crosscurve, the closed curve is effectively bent by the arc. Later a surface is fitted along the edges of the cross (bent) curve. The easiest way to do this is by using the Bounded Surface or the BlueSurf. So next time you want a curved surface from a flat one, bend it using a ..... CrossCurve. |  |
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Tushar Suradkar segurucool @ indiatimes.com |
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