2019 Collaborative Product Design Internship 40623206

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OnshapeWeek2

Week2 Lesson Plan

2-1-Lesson Plan.pdf

介紹3D模型

 無論手有多短,手始終都應該位於時鐘中心

 數字應該始終與鐘面的中心距離相等,如果我將其中一個數字移至靠近中心,所有數字應該更接近

 數字應該始終有一樣的高度,如果我使其中一個數字變大,剩下的的數字應該也要變大

 隨便畫一條直線,在將線的末端拖移到原點正上方,使得線以橙色的點顯現

 如果想要將側邊彼此相等,選擇四條線,在按上方的 " = "

 如果不想將方形拖移到任何尺寸,可用尺寸約束他

 畫一個原在方形旁邊並相切

 如果希望圓中心點與頂點邊緣對齊,可以用水平約束

 定義圓的大小

 如果想看自己增加的約束可以將Show constraints的選項打勾

 可以改長度、角度、質量的單位

 Let’s take a second to reflect(反映) what we learned in this lesson.
  1. We learned about how dimensions(尺寸) and constraints(約束) help                          define design intent(設計意圖).
  2. We learned how to make accurate(準確) parts using:
    a. different extruding options
    b. planes
    c. fillets and chamfers
    d. multiple sketch regions
  Next week we will learn about multi-body parts(多實體), where design intent will   become even more important! 

Week2 Homework

2-2-Homework.pdf

Week2 Assessment

2-3-Assessment.pdf

2-3-Assessment (Answers).pdf

Q : What is design intent(設計意圖)? Describe(描述) in your own words.

A : Design Intent is the practice of developing your project’s(項目) objectives(目標) and requirements(要求) even before working on your design.

Q : What is the difference between sketch entities(實體) that are colored blue, black, and red?

Blue means it is underconstrained(不受約束), black means it is fully constrained(完全約束), and red means it is overconstrained(過度約束).

Q : What is automatic inferencing(自動推理), and how is it utilized(利用)?

A : When Onshape automatically assigns(指定) constraints to sketch entities while sketching. It can be activated by(激活) hovering over an existing entity, or temporarily(暫時) turned off by selecting the [shift] key

Q : Which feature is this and what is it used for:plane ?

A : This is the plane tool, used to create new planes in addition to(除了) the default
Top/Right/Front planes.

Q : How are fillets and chamfers similar? How are they different?

A : They are the same in that both features are applied to edges only, they are different in that a fillet creates a round profile, and a chamfer creates a flat profile.

左邊為圓角,右邊為倒角


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