How can one quickly get started with mold design?

There are many online learning videos and materials. However, very few people can truly learn mold design on their own; most are quite lost. On the one hand, they lack practical opportunities. After completing a design, they don't know if it's correct, and there's no one to review it. They spend a lot of time drawing without even knowing if it's acceptable. On the other hand, there's an overwhelming amount of material, making it difficult to know where to start. The more they look, the more confused and less confident they become! Actually, getting started is crucial when learning anything. First, you need to find the right approach; this is the most important thing. Once you find the right approach and are on the right track, the rest is just time and practice.

Let's start with the software: CAD Mold Design Process
I. Software
Modern mold design requires drawing software. There are many types of software, but mastering one is sufficient. For 2D software, use AutoCAD; for 3D software, use any one of NX, ProE, or SW. It's recommended to start with AutoCAD.

Taking AutoCAD as an example, each software is very powerful. You don't need to learn and master them all. You only need to learn the common commands required for mold design and practice them intensively until you have a thorough understanding.

Although there are many CAD keyboard shortcuts, only a few are commonly used, such as: Line Segment L, Circle C, Offset O, Trim TR, Delete E, Move M, and Dimensioning.

Mastering CAD means finding the most appropriate command to complete the drawing of the elements as quickly as possible. It's worth mentioning that modern design software often includes secondary development programs to improve efficiency.

External programs are a crucial aspect that designers must master; they are key to improving drawing efficiency. Initially, you can ignore external programs, but once you have a certain foundation, adding them will give you a significant advantage! Learning this requires first understanding mold structure; if you don't understand the structure, you'll find it very difficult to learn.

II. Mechanical Drawing Many self-taught designers are professionals in mold-related industries, such as fitters, wire EDM operators, machining personnel, and mold assembly and repair personnel. A common misconception is that "mechanical drawing doesn't need to be learned; I read drawings every day at work, so I must be fine."

This is not the case. Being able to understand drawings and being able to draw them are two completely different concepts. Checking your drawing skills is quite simple. Everyone can try answering the following questions:

1. What is mechanical drawing?

2. What are three-view drawings? What are the basic views? What are the different types of perspectives? Which perspective is currently used in China? How are perspectives expressed?

3. What is the correspondence between views in three-view drawings? What are the principles of projection?

4. What are the different types of line types in drawing elements? What are their respective functions?

5. What are the basic principles of annotation? What should be considered when annotating properly?

These are the most common questions. If you cannot answer even one of these questions completely, it means your mechanical drawing skills are insufficient, and you need to relearn mechanical drawing comprehensively.

III. Assembly and Clearance Selection
A complete mold consists of many standard parts, punches, inserts, and various other parts and templates. How to arrange the clearances between these parts is a skill, especially the blanking clearance between the punch and the cutting edge, which is the most technically demanding.

If you can understand the content in the table below, it means your foundation is good; if you can integrate and apply it, it means you have mastered the content.

Assembly Clearance

IV. Basic Knowledge
This section is somewhat disorganized but crucial. It requires mastering the properties of template materials, stamping materials, material preparation principles, press tonnage and force calculations, including basic mold structure types.

V. Process and Strip Fabrication
Most of this content cannot be learned independently and requires guidance from other designers. Self-taught individuals are rare. However, for self-study, prioritize learning and mastering fixed concepts like dimensional tolerance scaling and product unfolding.

The following image shows the formulas for unfolding coefficients. While not difficult, applying them flexibly is challenging. Calculations typically require consideration of actual bending processes and structural characteristics; direct calculations are insufficient. This is the main reason why many people experience significant discrepancies in unfolding results.

Unfolding Coefficient

VI. Standard Parts
Standard parts are those that can be purchased directly from hardware stores. Common examples include: fixing screws, locking screws, rectangular springs, mold closing pins, equal-height sleeves, guide pillars, etc. Understanding the function of each standard part and how to select the appropriate length and size is essential and requires experience.

 Summary: We need to study and summarize the various structures and drawing standards of molds in depth. Those with experience as fitters should have an advantage in this area, as they deal with molds daily and are already familiar with them. Finally, I've attached a mold design learning process tree diagram: