To design and Construct a Straw Robotic Arm

Prepared by LEE HO SING(25)

CHAN HO KIU(04) LEUNG CHUN

CHEUNG(27) KWONG KAI FUNG(19)

(spring2004)

Team members and the Supervisor

Table of contents

1) Project objectives

2) Method of research

3) Prototype making

4) Analysis of the straw robotic arms

5) Literature and internet reviews

6) Self reflection

7) Knowledge and skill gained

Project objectives

1) Learn more about the straw structure and engineering knowledge

2) Learn skills to run technological based project for the further studies

Method of research

(i) By Brainstorming

(ii) By trial and error

　　　　　　　　　　　　　　 ~ 屢敗屢戰，成功在明天～

(iii) By subject expertise

(iv) By observation

　　　　　　　　　　　　　　　　　～三人行必有我師～

Prototype making

Analysis of the straw robot arms in the competition

There are some good models below

1)http://www.ied.edu.hk/has/phys/mathmech This website highlights the Mathematics for mechanics.

2) http://www.carlos.com.hk/cd_t.htmThis website shows some examples of straw robotic arms.All of the information are very helpful for us to design the robotic arm.

3) http://data-log.hkedcity.net/physicsc/mechanics/mechanics_main.shtmlThe website describes something about the mechanics.

Internet and Literature reviews

工場幾何三角學 (CHAPTER 1.4, 2.6,3.7)

理論力學與機械原理(CHAPTER 3.2~3.4,5.1~5.3)

Self ReflectionAdvantages of our prototype

1) good look

2) creative idea

3) proper size

Disadvantages of our prototype

1) weak bending strength

2) cannot hold the bottle firmly

3) poor craftsmanship at straw joints

Our new design

Knowledge and skill gained

1. Know how to share duties for the project

2. Learn more about the engineering material and mechanism

3. Synthesis skills to make a robotic arm

4. Know something about the City University of Hong Kong

5. Apply the PowerPoint techniques to do oral presentation

6. Apply the digital image processing skills for the written report

It should be a good opportunity to learn something about the material science and mechanism. The knowledge and skills gained are summarised below :