Comparative Analysis of 3D CAD Stretching Function between Zhongwang 3D and Creo

I am engaged in the design of cooling equipment. I have been in contact with 3D CAD design software for several years. With the deepening of 3D CAD design concept, 3D CAD design has replaced traditional 2D CAD design and has been accepted by more and more enterprises. The 3D CAD design software market is rapidly expanding. At present, there are many kinds of 3D CAD design software. It is really a problem for beginners to choose which software. Today, China’s Zhongwang 3D 2012 (hereinafter referred to as “Zhongwang 3D”) and foreign Creo Parametric 2.0 (hereinafter referred to as “Creo” ") The solid modeling part does a functional comparison.

Zhongwang 3D is a CAD/CAM integrated solution with independent intellectual property rights of Guangzhou Zhongwang Longteng Software Co., Ltd., which is widely used in machinery manufacturing, mold design and processing, and consumer goods. The predecessor of Creo Parametric is the Pro/E software that everyone often talks about. It is the first software to propose and execute parametric drawing. So what kind of sparks will the two softwares meet? Let's compare them with the stretch command in the solid modeling tool.

Figure 1 is a screenshot of the two software entity commands, both of which provide common tools for sketching, stretching, rotation, sweeping, etc., all of which can be constructed by constructing a sketch and then using solid commands. .

figure 1

We can see in Figure 1 that there is a hexahedron tool behind the 3D insertion sketch. What function can this command achieve? Through the drop-down menu we see six options for a total of hexahedrons, cylinders, cones, spheres and ellipsoids. As the name suggests, we can create entities directly without the need to build a sketch. So what is the practicality of this function? Looking back at our design work, in fact, many times we use these basic objects to piece together complex entities, so the usage rate of this function is still very high. This is the first highlight of Zhongwang 3D that I mentioned: creating entity tools directly.

Below we create a cylinder in each of the two software, and then add a reinforcement ring to the cylinder, the effect shown in Figure 2, the following detailed comparison of this example.

figure 2

In Figure 2 we see that creating the same entity, the two software needs different steps, obviously 3D in less steps to achieve the design intent. Let's analyze where the gap is. In addition to using the Create Entity command to create a cylinder as mentioned above, we also use the drawing data in the previous step to create subsequent features. The features that support the graphics in 3D pass through. The expansion of the offset method expands the line into a face and then stretches it into a solid, which is not possible in Creo. To achieve the goal, Creo can only be realized by two sketches, which will inevitably increase the workload, so There are more drawing steps.

If we let go of the function of directly creating an entity, what will happen to the creation of the above entity in 3D? Let's take a look at Figure 3.

image 3

In Figure 3, you can see that the 3D can be implemented in a sketch by three steps. First, construct two concentric circles in one sketch, and then stretch the small circle inside (Creo does not support this operation). Then, stretch the outer reinforcement ring by the two-point stretch type to achieve the stretched object offset sketch (Creo does not support this operation).

There are some other options for the 3D stretching command. For example, adding the draft angle, selecting the offset method, etc. are all practical 3D CAD functions. I will not introduce them here. You can go to the Zhongwang software website. Download Zhongwang 3D2012 (http://) and experience the charm of domestic 3D CAD software.

The above is a little bit of three-dimensional CAD operation experience that I summarized when I used the 3D stretching command. Stretching is only the most basic command in solid modeling, and the basic command is precisely the most frequently used, and the operation speed is also able to Improve the efficiency of CAD design. Other commands on 3D CAD modeling will be improved in the subsequent CAD articles. Welcome to the 3D CAD communication platform of Zhongwang Technology Community to discuss with me further, and express your thoughts and help the domestic software!

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