MINISTRY OF EDUCATION AND TRAINING HO CHI MINH CITY UNIVERSITY OF TECHNOLOGY AND EDUCATION FACULTY FOR HIGH QUALITY TRAINING GRADUATION THESIS ELECTRONICS AND TELECOMMUNICATION ENGINEERING TECHNOLOGY RESEARCH, DESIGN AND IMPLEMENTATION OF SANDPAPER CLEANING MACHINE IN WOODWORKING INDUSTRY ADVISOR : NGUYEN LE TUONG STUDENTS: NGUYEN TIEN PHUC HUYNH TRUNG BUU VO DINH NGHI SKL 0 1 0 8 5 3 Ho Chi Minh City, July 2023 HO CHI MINH CITY UNIVERSITY OF TECHNOLOGY AND EDUCATION FACULTY FOR HIGH QUALITY TRAINING GRADUATION PROJECT RESEARCH, DESIGN AND IMPLEMENTATION OF SANDPAPER CLEANING MACHINE IN WOODWORKING INDUSTRY Student name: Nguyen Tien Phuc 19146137 Huynh Trung Buu 19146109 Vo Dinh Nghi 19146097 Major: MECHATRONICS ENGINEERING Advisor: NGUYEN LE TUONG, M. Ho Chi Minh City, July 2023 THE SOCIALIST REPUBLIC OF VIETNAM Independence – Freedom– Happiness -------- Ho Chi Minh City, January 20, 2020 GRADUATION PROJECT ASSIGNMENT Student name: _________________________ Student ID: ___________________ Student name: __________________________ Student ID: ___________________ Student name: __________________________ Student ID: ___________________ Major: ________________________________ Class: ________________________ Advisor: ____________________________ Phone number: _________________ Date of assignment: _____________________ Date of submission: _____________ 1. Initial materials provided by the advisor: ___________________________________ 3. Content of the project: _________________________________________________ 4.
Final product: ________________________________________________________ CHAIR OF THE PROGRAM ADVISOR (Sign with full name) (Sign with full name) i THE SOCIALIST REPUBLIC OF VIETNAM Independence – Freedom– Happiness -------- Ho Chi Minh City, January 20, 2020 ADVISOR’S EVALUATION SHEET Student name:. Content of the project:. Approval for oral defense? (Approved or denied) .) Ho Chi Minh City, month day, year ADVISOR (Sign with full name) ii THE SOCIALIST REPUBLIC OF VIETNAM Independence – Freedom– Happiness -------- Ho Chi Minh City, January 20, 2020 PRE-DEFENSE EVALUATION SHEET Student name:. Name of Reviewer:.
Content and workload of the project. Approval for oral defense? (Approved or denied) .) Ho Chi Minh City, month day, year REVIEWER (Sign with full name) iii THE SOCIALIST REPUBLIC OF VIETNAM Independence – Freedom– Happiness -------- EVALUATION SHEET OF DEFENSE COMMITTEE MEMBER Student name:. Name of Defense Committee Member:. Content and workload of the project .) Ho Chi Minh City, month day, year COMMITTEE MEMBER (Sign with full name) iv ACKNOWLEDGEMENT Firstly, our group would like to express our deep gratitude to Ms.
Nguyen Le Tuong - the instructor of the Mechatronics Department at Ho Chi Minh City University of Technology and Education, and CODIA Industrial Solutions Company for their enthusiastic guidance and providing favorable conditions for us to complete this graduation project successfully. Throughout the implementation of the graduation project, despite being busy with work, Ms. Tuong has devoted a significant amount of time and effort to guiding us. She provided valuable knowledge, materials, and resources when we started the project.
During the project execution, she always provided guidance, suggestions, and corrections, helping us promptly rectify any mistakes. Our graduation project has been completed, thanks to the reminders, encouragement, guidance, and favorable support in terms of morale and research materials provided by CODIA Industrial Solutions Company. However, due to limitations in our abilities, time constraints, and other objective reasons, errors are inevitable. We sincerely hope to receive understanding and feedback from the department and fellow students.
We would like to thank our parents for their continuous financial support in implementing this project. Once again, we would like to express our deep respect and profound gratitude to our esteemed professors in the faculty, the instructors in the department, especially to Ms. Nguyen Le Tuong - our guiding teacher, CODIA Industrial Solutions Company, and our parents for their support in helping us successfully complete our graduation project. Ho Chi Minh City, July 2023 Students i ABSTRACT Research, design and implementation of cleaning machine in woodworking to clean sandpaper using ultrasonic waves Woodworking industry nowadays use a lot of sandpapers in the process, which can cost the factories billions of dollars.
Despite several efforts in recycling the sandpapers, in today's industrial production, there is a growing need for flawless cleaning methods Production lines require a cleaning process that is quick, effective, and doesn't harm human health. However, the current cleaning methods have drawbacks. Mechanical methods can't clean sandpaper efficiently and chemical methods can damage products and struggle with removing stubborn dirt. Therefore, there is a need for a suitable, fast, and hygienic cleaning method that also meets technical and cost requirements.
To address this, our team has studied ultrasonic wave theory and how to generate these waves. We have successfully combined ultrasonic technology with the concept of reusing sandpaper used in woodworking factories by introducing the idea of cleaning the sandpapers with ultrasonic to achieve superior cleaning results. Our basic model includes an STM32 microchip and a motor to control the machine, offering similar cleaning functions to existing products in the market while improving on some of their limitations. With this novel approach, we aim to revolutionize the woodworking industry with reusable sandpapers, providing a reliable solution for efficiently cleaning intricate pieces and ensuring pristine final result without compromising on safety or effectiveness ii TABLE OF CONTENTS GRADUATION PROJECT ASSIGNMENT .i PRE-DEFENSE EVALUATION SHEET.
iii EVALUATION SHEET OF .iv DEFENSE COMMITTEE MEMBER .iv TABLE OF CONTENTS. iii CHAPTER 1: OVERVIEW .2 Scientific purpose and practical significance of the topic: .3 Research objectives of the topic: .4 Subjects and scope of research:. Subjects of research:. Scope of research:.
Outline of the graduation thesis:. 5 CHAPTER 2: THEORETICAL BASICS. The overview of wave:. Nature of Ultrasonic Waves:.
Features of ultrasonic waves:. The units of wave:. Overview about sandpaper:. Grit of sandpaper:.
Classification of sandpaper. Note when using sandpaper:. Application of sandpaper in woodworking:. Choose sandpaper of thesis: .1 Traditional Cleaning Technology:.
Ultrasonic Cleaning Technology:. Principles of Cleaning using Ultrasonic Technology:. Cleaning Process using Ultrasonic Technology:. Advantages of Ultrasonic Cleaning Technology:.
Factors Influencing the Ultrasonic Cleaning Process:. Relationship between Frequency and Bubble Size:. The Effect of Temperature:. The Effect of Chemicals:.
Cleaning Time Required:. Ultrasonic Power and Tank Volume:. Applications of ultrasound waves:. Roles and Classification of Transducers:.
Similar products on the market:. CO-Z Ultrasonic Cleaner:. VEVOR Ultrasonic Cleaner:. 38 CHAPTER 3: DESIGN OPTIONS.
Choose machine structure:. Choose transmission mechanism:. Choose material of frame:. Choose material of tank:.
Sketch machine structure. 46 CHAPTER 4: DESIGN OF MECHANICAL SYSTEM. Machine structure requirements:. Calculation and selection of components:.
X axis guide mechanism:. Z axis guide mechanism:. 59 CHAPTER 5: DESIGN OF ELECTRICAL AND CONTROL SYSTEM. System block diagram:.
Calculation and Selection of Components:. Pump Motor and Water Level Sensor Selection:. Water Temperature Control System:. Designing an ultrasonic cleaning system:.
Simulation of ultrasonic cleaning:. Calculation and Choose component for dry tank:. Voltage and current of components:. Construction of electrical cabinets:.
Design printed circuit on Altium:. Manufacture of electrical cabinet:. Monitoring and Control Interface:. Parameter setup and basic control section:.
104 CHAPTER 6: EXPERIMENT RESULTS/ FINDINGS AND ANALYSIS. Establish Target Specifications:. List of metrics:. Sandpaper evaluation criteria:.
Surface of sandpaper test:. 113 CHAPTER 7: CONCLUSION AND FUTURE DEVELOPMENT. 116 v LIST OF FIGURES Figure 1.1 Types of equilibrium .2 Classify sound waves by frequency.4 Rarefaction and Compression in Longitudinal Wave.5 Types of Sandpaper .6 Sandpaper selection chart based on grit .7 Using Sandpaper in Woodworking.13 The relationship between frequency and bubble size .14 Doppler ultrasound machines .15 Product defect detection .16 Survey and map challenging terrains.18 Cleaning Surgical instrument .19 Direct piezoelectric effect (a) Tension Force (b) Compressive Force .20 Inverse piezoelectric effect .21 The structure of an ultrasonic transducer .22 Pin descriptions of STM32 .23 Pin function of STM32 .24 CO-Z Ultrasonic Cleaner .25 VEVOR Ultrasonic Cleaner .1 Ultrasonic cleaning tank with one basin .2 Ultrasonic cleaning tank with multiple basins .3 Ball Scew Drive.4 Lead Scew Drive .6 3 State Ultrasonic Cleaner .7 Design machine structure on solidworks .2 Roller Ball Screw .3 The relationship between friction and speed of two types of roller screws .4 Structure of LM Guide Actuator Model KR.6 Step Motor Size 57 .1 Block diagram of the entire system .2 The operation process .3 Picture of 5V mini pump .4 Picture of the water level sensor .5 Commercial temperature controller .6 Closed-loop PID control diagram .7 Response Graph when using the components of a PID controller .9 Configurations of MAX6675 .11 Connect between MAX6675 and Microcontroller .13 Configure Pin STM32 on MXCube.14 Simulation on Proteus.15 Read value from Oscilliscope .16 Result on Proteus .17 Zero Detection Circuit .19 Result on Proteus of Zero Detection Circuit.20 Water heater element .22 Typical Application Circuit .24 The TRIAC triggering circuit .25 The period of the alternating current (AC) voltage cycle .26 The relationship between the Triac firing angle and time .27 The graph of temperature over time for the object .28 Ziegler-Nichols method 1.29 The response of the system when only Kp is present .30 The response of the system when changing Ki.31 Response of the system when changing Kd.32 Ultrasonic wave generator circuit .34 Arrangement of transducers in the ultrasonic cleaning machine system .35 Wave interference in the tank.36 Description of the wave interference basis.37 The description of the relationship between L and y .38 CAD Model of tank .40 Preessure around the tank .41 Preessure around the tank .42 Comparison of simulation of acoustic pressure and experiment of aluminum foil corrosion in planes 1 and 2 .43 Acoustic pressure distribution for different power .44 Acoustic pressure distribution for different frequency .46 Solid State Relay. 114 viii LIST OF TABLES Table 2.1 Some common cleaning solutions for metal .2 STM32F103C8T6 Pinout Configuration [8] .1 Advantages and Disadvantages of one cleaning tank and multiple cleaning tanks .2 Advantages and disadvantages of transmission mechanism .3 Advantages and disadvantages of material for frame .4 Advantages and disadvantages of material for tank.1 Type of screws .2 Advantages and disadvantages of Motion .5 Axial force of X .8 Type of Servo Motor.9 Techincal specifications of stepper motor .10 List of manufacture Parts .1 Specifications of the 5V mini pump .2 Specifications of the water level sensor .3 Advantages and disadvantages of K Type Thermalcouple .4 Specifications of the temperature sensor .5 Specifications of the MAX6675 Converter .6 Specifications of PC817.7 The specifications of the heating element .8 The specifications of MOC3021 .9 The specifications of TRIAC BT134 .10 Specifications of the ultrasonic wave generator circuit .11 Specifications of relay 5v.12 The specifications of worm resistor .13 The specifications of SSR .14 Voltage and current of components .15 Technical Specifications of Power Supply 24V 5A.1 List of metrics .2 Metrics and needs correlation .3 Dimension and measured value .4 Result depend on Temperature .5 Result depend on Solvent .6 Result depend on Power.
112 ix x Đồ án tốt nghiệp CHAPTER 1: OVERVIEW 1.1 Topic necessity: Current situation: natural resources are increasingly depleted, environmental pollution is becoming more and more serious, strongly affecting the living environment, causing dangerous diseases. This is a great challenge, prompting countries to recognize and change their development strategies, determine that economic development must ensure that it does not harm the environment, towards a green - clean - circular economy for sustainabl development. Circular economy towards sustainable development. The concept of a circular economy was first used formally by Pearce and Turner (1990) [1].
It is used to refer to a new economic model based on the basic principle of "everything is an input to another", which is completely different from the view of the traditional linear economy. The Ellen MacArthur Foundation describes it as an industrial system that restores or regenerates by intent and design. Accordingly, not only reducing dependence on resources and limiting emissions, Circular Economy models still bring great benefits and promote.1 Circular economy Every year, companies in the wood industry spend billions of VND to buy sandpaper 1 Đồ án tốt nghiệp Figure 1.