What is Penetration 5 in SOLIDWORKS?

Note: 1) Penetration must touch (locked on the curve) and coincidence is not necessarily, i.e., penetration is a special case of coincident.

2) The coincidence does not necessarily penetrate, but the penetration must coincide.

3) Penetration can also be understood as a real spatial coincidence.

4) For example, if one of the endpoints in Sketch 2 coincides with the curve in Sketch 1, you can see in the viewport on the left as if the endpoint in Sketch 2 falls on the curve in Sketch 1, but in fact, when we turn the sketch at an angle, we can see that the point in Sketch 2 does not fall on the curve in Sketch 1 in space (see the viewport on the right). This shows that the coincident relationship is only a projection relation, that is, the endpoint in sketch 2 falls on the curve in sketch 1 in the direction of the normal direction of the plane drawn in sketch, of course, there is a special case, that is, the endpoint in sketch 2 does fall on the curve in sketch 1 in space, then at this time they are actually already a penetrating relation.

The penetration constraint command is also a recent look at the Internet** only to know that there is such an order.,Watch**Teacher operate that is called a simple.,But when you draw yourself, you can't point it out.,The result is a blind spot.,Occasionally you can point out the command of penetration.,Later, I repeated several ways to choose:

Hold down the Ctrl key, point the curve, and then click on an endpoint on the line (Ctrl key don't let go), then the coincidence and penetration commands will appear on the left, and then the point penetration will be fine.

It would be easier to understand this with the help of coincident constraints:

Coincidence is when a point is located on a line, arc, etc. Penetration is when the location of the sketch point coincident with the penetration of the datum axis, edge, or curve on the sketch datum.

Penetration must touch (locked on the curve) and coincidence is not necessarily, i.e., penetration is a special case of coincident. The coincidence does not have to penetrate, but the penetration absolutely coincides. Like the concept of "subset" in mathematics, penetration is a subset that coincides.

Two figures that cannot touch each other can coincide, but they cannot penetrate.

Overlap has the following two meanings.

1) The elements of the same screen coincide in the direction of the extension line, and the elements do not necessarily touch each other.

2) Between the elements of different planes, it refers to the coincidence of the projection in the direction of the vertical plane, and the points do not necessarily touch each other.

Regardless of whether it is the same plane or not, the condition for penetration is first of all whether it can be contacted, and if it can be contacted, it can be penetrated, and if it cannot be contacted, it cannot be penetrated.

1) Two sketches on parallel planes can coincide with each other, but the projection cannot penetrate it.

2) Sketches of the same plane can coincide with dimensional constraints, and extension lines cannot penetrate.

In most cases, SOLIDWORKS can use coincident relationships instead of penetrations to complete the modeling work. However, in some complex cases, it is necessary to use penetrating relations, which can be added by adding the geometric relations function.

Simply put, there is an intersection between two sketches!

Please refer to the SOLIDWORKS help content and do a few exercises to master it.

1. First open the spline + sketch outline, 2. Let the sketch outline and spline penetrate, 3. Add the geometric relationship of penetration, first select the penetration point 4, and then, press Ctrl+Left mouse button to select the spline, 5. Scan, press the penetration point to scan accurately to complete the rendering.

Penetration is the geometric relationship between points and lines, for example, if you want to scan and lof, take the cylinder as an example, draw a circle on the top datum, draw two cylindrical side edges on the right datum, connect with the circle of the top datum, add geometric relations, select the connection point between the side and the bottom circle, select the circle of the top datum, penetrate the geometric relationship, and loft into a cylinder.

You need two sketches, one in the state.

Select a sketch first, then hold down Ctrl and select another sketch, the left sidebar will automatically appear the geometric relations that can be added, if you can add penetration, you can't add it will not appear.