CADDesign

Overview of Works

Simulation of Tangential Motion in Disc-type Cam Structures

Motion Effect

Component Engineering Drawing

Pendulum motion simulation

Motion Effect

Timeline Process

Motion Simulation of Four-bar Mechanism

Motion Simulation of Cam Mechanisms

Schmidt Coupling

Simulation Modeling Process of Tangential Motion of Disc Cam Structure

1.Draw a circle with a diameter of 30mm and its center at the origin.
2.Set a circle with a diameter of 3d1+0.1 and 3d1+12.1 above the y-axis origin.
3.Stretch the set circle to a distance of 1/6d1 from the ring.

4.Set a rectangle with a width of 1/6d1 and a height of 57mm on the plane, and symmetry the rectangle on the y-axis.
5.Arrange three of these rectangles in a circular distribution with the origin as the center point.
6.Stretch these three rectangles by a distance of 1/6d1 and merge them with the cylinder.

7.Return to the plane with the origin as the center and set up a circle with a diameter of 2/3d1.
8.Stretch the circle by a distance of 5/6d1.

9.Set a groove on the y-axis and stretch it on both sides.
10.Place a rectangle along the left edge of the groove and the center of the upper circle.
11.Set a circle with a diameter of 1/6d1 centered at the lower circle’s center and another circle with a diameter of 2/5d1.
12.Place circles with diameters of 2/5d1 and 1/6d1 above the center of the lower circle in the groove.
13.Stretch the set rectangle by 50mm.

14.Stretch the two set small circles to create holes and then create a new component.
15.Stretch the two new cylindrical components by -7/30d1.
16.Stretch the two large circles by 7/30d1.

17.Set a rectangle at the top of the groove, proportionate to the outer edge and centered, and then stretch it on both sides.

18.Stretch the ring of circles outside the original circle by 2/3d1.

19.Create a custom shape in the yz-plane and symmetrically stretch it by 1/6*d1 .
20.Merge the generated shape with the rectangular body and the annular body, then set it as a rigid group.

21.Set the “Mercedes logo-like” shape to rotate around the z-axis joint.

22.Set the two small cylinders to have a rotational joint.

23.Set the groove to have a sliding joint along the z-axis.

24.Establish a tangential relationship between the upper small cylinder and the ring.

25.Final GIF presentation.

Schmidt Coupling Modeling Process

The design for this project is a simplified structure of a Schmidt coupling. Below are the specific modeling steps:

1.First, create a sketch of three main axes, and select the top view as the sketch plane. Use a circular array to obtain all three sides as shown in the sketch below:

2.Extend the sketch of the main axes, and repeat the previous steps as shown in the following diagram. In the end, you will have three main axes as depicted in the image:

3.Draw a sketch for the connecting shaft as shown in the image.

4.After extending the connecting shaft, perform a move/copy operation to obtain the desired quantity of connecting shafts as shown in the image:

5.Select a palne on the main axis to create a sketch, then establish a secondary connecting shaft as shown in the image:

6.After repeating the above operations, you will obtain the required components as shown in the image:

7.Once you’ve converted the entities into components, assemble the various parts by selecting the center and the plane, then choose a rotational motion as shown in the image:

8.Repeat the above steps to connect all the shafts and secure the base. The assembly is now complete.

Introduction to other modeling software.

Blender

Blender is a free and open-source 3D computer graphics software used for creating, rendering, and animating 3D content. It offers a wide range of features, including 3D modeling, material and texture creation, rendering, animation, compositing, layout, and more, making it widely used in various fields such as film production, game development, architectural visualization, scientific visualization, virtual reality, and more.

Here are some key features and functions of Blender:
3D Modeling: Blender allows users to create various 3D models, including geometries, characters, buildings, landscapes, and more. It provides multiple modeling tools, such as polygon modeling, subsurface subdivision modeling, and sculpting tools, enabling users to precisely shape their models.

Materials and Textures: Users can create materials for their models and then add textures and maps to enhance the appearance and texture of the models.

Rendering: Blender includes a powerful rendering engine for generating realistic images and animations. It supports ray tracing, real-time rendering, and various rendering effects.

Animation: Blender allows users to create animations for objects, including keyframe animation, skeletal animation, and physics simulations, making it an ideal tool for producing animated films and games.

Compositing and Special Effects: Users can perform video compositing and add special effects within Blender, making it a top-notch tool for video post-processing.

Layout and Design: Blender also features a set of layout tools for creating graphic design, animated titles, interfaces, and interactive content.

Scripting and Plugin Support: Blender is extensible, and users can write custom tools and plugins using Python scripting to meet their specific needs.

Free and Open Source: Blender is free to download and use. It is also open-source software, allowing users to view and modify its source code.

Blender’s user interface may be a bit steep for beginners, but it has a strong community and numerous online tutorials and resources to help users get started. Whether you are an artist, designer, game developer, or animator, Blender is a powerful tool to help you realize various 3D creative projects.

ZBrush

ZBrush is a professional digital sculpting and 3D modeling software developed by Pixologic. It is widely used in the fields of digital art, 3D modeling, character design, and sculpting to create highly detailed 3D models. Here are some key features and functions of ZBrush:

Digital Sculpting: One of the primary functions of ZBrush is digital sculpting, allowing artists to paint and sculpt on 3D models using fine brushes and tools. This enables users to create highly complex and detailed models, including characters, creatures, environments, and more.

High-Resolution Models: ZBrush supports very high model resolutions, which means users can add minute details such as textures, wrinkles, skin textures, etc., without losing detail.

Polygon and Subdivision Modeling: Users can create basic polygon models and then refine them with subdivision surfaces to add more detail. This workflow allows artists to make fine modifications to the model.

ZBrush Brush System: ZBrush has an extensive brush library, including standard brushes, array brushes, deform brushes, and more, allowing artists to achieve various effects and textures.

Polygon Painting and Sculpting: ZBrush allows users to paint polygons directly on the model without the need for manual topology drawing, making model creation and modification more flexible.

Facial Modeling and Character Design: ZBrush is powerful for creating character models and facial expressions, suitable for digital character design and animation production.

Real-Time Preview and Rendering: Users can perform real-time rendering in ZBrush to see how the model looks under different lighting conditions, enhancing their understanding of the final appearance.

ZRemesher and Polygon Retopology: ZBrush provides automatic retopology tools to help users generate clean polygon topology for subsequent modeling and animation.

Plugin Support: ZBrush supports plugins to extend its functionality, adding extra tools and effects.

ZBrush is a preferred tool for digital artists, game developers, visual effects professionals, and modelers, as it offers excellent sculpting and modeling tools to create high-quality 3D models and characters. While ZBrush may have a learning curve for beginners, it excels in creating complex digital art and 3D models.