Download Bending Machine for Orthodontic archwires

Capstone
Design
Team. CHI-A
정준영 20081838
전우준 20071223
김건식 20091798
김병찬 20091804
한일환 20111901
Bending Machine for
Orthodontic Archwires
1
Problem
Statement
2
Project
Objectives
Index
3
5
Design
Process
Final
Product
4
6
Test &
Evaluation
Question &
Answer
3
1
Why is it expensive to have
Orthodontic Instruments?
Problem
Statement
In this page, we are trying to find out the reasons.
Dental clinic
• Expert (Dentist)
• Apparatus
Components
• Bracket
• Orthodontic
Archwires
Technique
• Patents
• Monopoly on
technique
4
We need to change the
Current Status!!
No precede Korean technical development and patent, yet.
1
Problem
Statement
In USA, Europe
there exist Bending Machines
For Orthodontic Archwires.
In terms of Orthodontic Archwires,
 To Design a Bending Machine
 To Develop Local Techniques
5
Why have we chosen this
subject?
These followings are the reasons we have chosen the topic.
2
Project
Objectives
Designing a Bending Machine in our own way
Makes
Possibilities
I. To meet the Increasing
Demand for patient
II. To make Economical
Advantages in production
III. To offer Short Delivery Period
6
2
Project
Objectives
Project
Objectives
These are the objectives we will accomplish.
1
Hardware
(3 DOFs ; linear motion, Roll angle, bending)
2
Simple program to operation
3
High-quality product
(LabVIEW)
7
2
Project
Objectives
Project
Objectives
1. 3 degrees of freedom
Wire
Linear motion
Roll angle
Bending
3 DOFs are needed for wire bending
8
2
Project
Objectives
Project
Objectives
2. Simple program to operation (LabVIEW)
Computer
(LabVIEW)
Processor
(FPGA)
Motor
operation
9
2
Project
Objectives
Project
Objectives
3. High quality product
Competitors
Objectives
Minimum
bending length
2.2mm
(Orametrix, USA)
Less than 2mm
Bending angle
error
less than 0.8 degree
(Orametrix, USA)
(experiment need)
Bending time
40 seconds
(Orametrix, USA)
Less than 40 seconds
Available wire
shape
round and square
(Orametrix, USA),
square
(3M, Germany)
round and square
10
2
Economical
Profits
Project
Objectives
In this page, numbers will be shown to be compared.
Price[won]
Unitek
3million
Suresmile
2.5million
Our product
1milion
11
2
Time Profits
Project
Objectives
In this page, numbers will be shown to be compared.
Product[day]
Delivery[day]
Unitek
28~30
14~15
Suresmile
24~28
14~15
Our product
1~2
1~2
12
3. Design Process
1) Concept Development
2) Concept Selection
3) Manufacturing Hardware
4) Developing Software
3
Concept
Development
This page is about Our initial design concept and its development.
Wire
Design
Process
Roll angle
Linear motion
14
3
Concept
Selection
Design
Process
This page is about the bending part.
Pins
Wire
Installing the two Guides
in order to allow for
bi-directional bending
Guides
Motor
Engaging
part of the
Pin and the
Motor
15
3
Realistic Constraints
We are working on developing codes using Labview.
Design
Process
Economy, Environment, Society, Ethics, Aesthetics,
Health and Safety, Productivity, Durability, Industrial Standards.
16
Manufacturing
Stage
We are working on developing codes using Labview.
3
Design
Process
1. Initialization
2. Check 3d graph,
first slope
3. Tuning the
property of bending
wire (company, shape,
thickness)
17
Manufacturing
Stage
We are working on developing codes using Labview.
3
Design
Process
1. Using first slope
and data of bending
point make pulse
2. The pulse go next
step
*Can monitoring
18
Manufacturing
Stage
We are working on developing codes using Labview.
3
Design
Process
1. Linear motion, roll,
bending in FPGA
2. Control motors by
pulses
19
Manufacturing
Stage
We are working on developing codes using Labview.
3
Design
Process
In final presentation…
We won’t spend slide this much for Labview algorithm.
20
Manufacturing
Hardware Stage
This picture shows our design of bending machine.
3
Design
Process
21
Manufacturing
Hardware Stage
This picture shows our assembled bending machine.
3
Design
Process
22
Why is it required
to have tests?
Because of Spring-back effect, test is required.
4
Test &
Evaluation
We will find out spring back coefficient
by experiment
23
Why is it required
to have tests?
4
Test &
Evaluation
We have to find pulse function in terms of angle...
𝑝𝑢𝑙𝑠𝑒 = 𝑓 𝑐, 𝑠, 𝑤, 𝜑, 𝜃 𝑑
𝑐 ∶ 𝑐𝑜𝑚𝑝𝑎𝑛𝑦, 𝑠 ∶ 𝑠ℎ𝑎𝑝𝑒, 𝑤 ∶ 𝑤𝑖𝑑𝑡ℎ,
𝜑 ∶ 3𝐷 𝑏𝑒𝑛𝑑𝑖𝑛𝑔 𝑎𝑛𝑔𝑙𝑒, 𝜃 𝑑 ∶ 𝑑𝑒𝑠𝑖𝑟𝑒𝑑 𝑏𝑒𝑛𝑑𝑖𝑛𝑔 𝑎𝑛𝑔𝑙𝑒
by experiment, we need to figure out spring-back coefficient.
Measure the angle while pulse is increasing.
24
4
Why is it required
to have tests?
Test &
Evaluation
These are fake data…
Experiment
Fitted function
25
How do we
Evaluate Our Product?
…
4
Test &
Evaluation
Criteria
Accuracy
Minimum bending length
Bending angle error
Bended wire width
Bended wire shape
Time
Bending time
26
Bending Machine for
Orthodontic archwires
Maybe, Demonstration or Simulation Video will be shown here.
5
Final
Product
27
Any question and advice
are welcome :D
Do not hesitate. Just raise your hands.
6
Question
& Answer
28
Thank You