Máy cắt tuốt dây điện tự động (Automatic wire cutting and stripping machine)

Máy cắt tuốt dây điện tự động 2 đầu dây điện 1 lớp. Đồ án này đã được thông qua và đạt kết quả 910 cuối kì. Báo cáo thể hiện cách tính toán chọn động cơ, thiết kế cơ khí, thiết kế mạch điện và thuật toán sử dụng. Ngoài ra, còn mô phỏng, rồi cho ra kết quả cuối cùng.

PREFACE In this demonstration, we will present the design, operating principle, and special features of the wire stripper that we have developed We will also explain how this wire stripper can provide superior benefits over traditional methods and create advancements in wire stripping technology We would like to sincerely thank the teachers for supporting our group in the process of doing PBL4 We look forward to receiving comments from teachers after reading the explanations 1 ASSURE I hereby commit that the content of the project "Automatic wire stripping machine model" is the research work of our group References and statistical data used for research purposes of this product are completely honest and have clear origins If they are wrong, I will take full responsibility Students perform: 2 TABLE OF CONTENTS PREFACE 1 ASSURE 2 TABLE OF CONTENTS 3 INTRODUCTION 6 CHAPTER 1: OVERVIEW OF METHODS OF CUTTING AND STRIPPING ELECTRICAL WIRES 7 1.1 Popular methods of stripping and cutting electrical wires today: 7 1.1.1 Manual wire cutting and stripping method 7 1.1.2 Automatic wire cutting and stripping 7 1.2 Introducing several types of wire stripping machines on the market: 8 1.2.1 KS-09I automatic wire stripping machine [1] .8 1.2.2 Schleuniger EcoStrip 9380 automatic wire stripping machine [2] 9 1.3 Overview of wire stripping cutting machine: 11 1.3.1 Main structure of electric wire cutting machine: .11 1.3.1.1 Engine 11 1.3.1.2 Roller .11 1.3.1.3 Example of adjusting height and width 12 1.3.1.4 Machine frame 12 1.3.1.5 Shaft coupling .13 1.3.1.6 Wire stripping and cutting pliers 13 1.3.2 General operating principles of current wire stripping machines: 14 CHAPTER 2: CALCULATION AND DESIGN OF MECHANICAL PARTS 15 2.1 Design plan for rope pulling parts 15 2.1.1 Two-axis plan of co-rotation 15 2.1.1.1 Option 1: Use a pair of cylindrical gears 15 2.1.1.2 Option 2: Use two pairs of cylindrical gears 15 2.1.2 Single-axis plan 16 2.1.2.1 Option 1: Direct drive 16 2.1.2.2 Option 2: Use flat belts and ladder belts 16 2.2 Design of wire stripping cutting parts 17 2.2.1 Option 1: One fixed blade and one blade perform cutting movements 17 2.2.2 Option 2: Both blades perform the same cutting motion 17 3 2.3 Transmission plan for the machine: 17 2.3.1 DC Motor 17 2.3.2 AC Motor (AC Motor) 18 2.3.3 Stepping Motor 18 2.3.4 DC servo motor 18 2.4 Distance adjustment structure 18 2.4.1 Lead screw-nut transmission 18 2.4.2 Ball screw-ball nut transmission 18 2.4.3 Adjusting screw 19 2.5 Choose a machine design option with the following technical parameters: 19 CHAPTER 3: CALCULATION AND DESIGN OF CONTROL PARTS 20 3.1 Calculations for choosing an engine .20 3.1.1 Calculate the zipper and required clamping force: 20 3.1.2 Transmission design 21 3.1.2.1 Choose engine 21 3.1.2.2 Calculate active axis 21 3.1.2.3 Torque acting on the shaft 22 3.1.2.4 Calculate bending moments at dangerous points 23 3.1.2.5 Test shaft according to safety factor 24 3.1.2.6 Select active shaft bearings 25 3.1.2.7 Select cutting motor 26 3.1.3 Choose the controller and motor for the machine: 26 3.2 Components contained in the machine: 26 3.2.1 ARDUINO UNO R3 26 3.2.2 NEMA 17 STEPPER MOTOR 27 3.2.3 MG996R SERVO 28 3.2.4 LCD 16x2 AND I2C 29 3.2.5 TB6560 DRIVER CIRCUIT CONTROLS STEPPER MOTOR 30 3.3 Flowchart 31 3.4 AutoCad Design 32 3.5 Solidwords Design 33 3.5.1 Electronic drawing 33 3.5.2 Detailed drawing 34 3.5.3 AS - Build drawing .35 3.5.4 Exploded – view drawing 36 4 3.5.5 3D model design 36 CHAPTER 4: CONCLUSION 38 4.1 Results achieved 38 4.2 Restrictions 38 REFERENCES 39 5 INTRODUCTION Today, industry and life are almost inseparable from electrical wires In the process of using electricity, we cannot avoid having to connect wires And then you need to remove enough insulation Every day, at automobile factories and industries related to electronic equipment, hundreds of sets of electrical wires of many different types must be used Most electrical wires are manufactured and packaged in rolls of a certain size When necessary, we need to cut the two ends of the wire at the appropriate distance to serve the usage requirements of each different purpose If you cut and strip wire by hand, productivity is low, product quality is not guaranteed, causing a waste of labor and production time Therefore, the creation of automatic wire stripping machines is very necessary to improve the accuracy and efficiency of wire stripping, helping to ensure safety and reliability in the process of wire stripping, installation, and maintenance of the system system power system With the development of technology, wire-cutting and stripping machines are increasingly improved in terms of features and performance, meeting the increasing needs of the electrical and electronics industry 6 CHAPTER 1: OVERVIEW OF METHODS OF CUTTING AND STRIPPING ELECTRICAL WIRES 1.1 Popular methods of stripping and cutting electrical wires today: 1.1.1 Manual wire cutting and stripping method The method of using specialized pliers to cut and strip electrical wires is a common method for professional electricians With this method, there are usually the following steps: Step 1: Place the wire you want to strip into the pliers If you want the strip to be longer, remove the red pin and push in more wire Step 2: Squeeze the pliers hard, the cutting blade will automatically separate the wire sheath for you with the smaller wires (the gut of the wire above, for example) Doing the same will not cause your wire to break In addition, pliers can also be used to cut electrical wires with very sharp and neat cuts Advantage: Cost-effective, flexible and convenient, especially in small and simple jobs Disadvantage: It is time-consuming, labor-intensive, error-prone, and ineffective on a large scale When working with complex wires or in large-scale applications, it is often recommended to use automatic wire cutters and strippers to ensure the best performance and safety Figure 1.1 Cutting and stripping electrical wires with pliers 1.1.2 Automatic wire cutting and stripping The method of cutting and stripping electrical wires using a specialized machine is known to be a commonly used method in industrial production Machines are used to remove the outer insulation layer of electrical wires With this type of machine, cutting both ends becomes faster, more accurate, and much easier This method can accommodate many different sizes, helping to save a lot of time and labor Advantages: ✓ Suitable for all sizes of electrical wires ✓ The working speed of the wire stripper is very fast and highly accurate ✓ The machine's wire stripping speed can be adjusted according to user requirements 7 ✓ The blade of the wire stripper works very effectively thanks to rotating at high speed ✓ The length of the wire stripper layer can also be adjusted depending on requirements ✓ The working principle of the wire stripper is easy, safe, accurate, and extremely durable ✓ To meet user needs, there are 2 types of manual machines on the market: handheld machines and fixed machines ✓ The finished product of the wire stripper is both aesthetically pleasing and clean without affecting the wire core Disadvantage: • During the working process, the machine still makes noise • The cost of an electric wire stripper is still higher than other types of strippers Figure 1.2 Kodera Casting C377A and KS-W612 automatic wire stripping machines 1.2 Introducing several types of wire stripping machines on the market: 1.2.1 KS-09I automatic wire stripping machine [1] Advantages: ✓ Performs half-threshing, full-threshing and middle-threshing functions ✓ Supports 3-layer stripping, stripping length of each layer can be set differently ✓ The machine is driven by 4 strong rollers, capable of increasing the maximum capacity of 10.0mm2 ✓ The sturdy steel blade cuts well and effectively ✓ The wire/cable conductor is designed to push up when stripping the wire end so that the wire end stripping length can reach 70mm ✓ The KS-09I electric wire stripper operates extremely easily, cutting to precise positions, achieving high productivity and operating for a long time 8 Figure 2: KS-09I automatic wire stripping machine Wire size 0.1 – 10.0 mm2 Maximum cable diameter Φ10 mm Cutting length 0-99999 mm Threshing length Wire end 0-50mm, wire end 0-70mm Accuracy ± (0.002mm × Stripping length) Cutting precision ± (0.002mm × Cutting length) Speed 3000-7000 pcs/hour Display English LCD touch screen Special functions Can strip 3 layers with different strip length for each layer How to move 4 moving rollers Blade material hard Vonfram steel Wattage 220W Electricity supply 220V/50Hz ; 110V/60Hz Weight machine 36 kg Size 390 x 350 x 255mm 1.2.2 Schleuniger EcoStrip 9380 automatic wire stripping machine [2] Advantages: ✓ Three-in-one device: Schleuniger EcoStrip 9380 wire stripper with unique 3- position design of the wire feeding system enhances customer customization and can be set for normal mode, mode rolling or short mode - depending on application ✓ Easy to use: The Schleuniger EcoStrip 9380 is easily operated via the 5.7" color touch screen and Schleuniger S.ON software 9 ✓ High precision ✓ Cut length ✓ Plucking Many layers Figure 1.3 Schleuniger EcoStrip 9380 automatic wire stripping machine Maximum outer shell diameter 8 mm Maximum wire cross-section 0.05 – 8 mm2 Cutter width 1 x 12 mm Multilayer cable Yes Maximum cutting length 1,000,000 mm Left threshing length 46 mm Right threshing length 152 mm Option to cut wire short 46 mm (18 mm from cable sheath after stripping) Connect Standard: Ethernet for PC, USB Optional: SMI Electricity supply (I/O‘s), Prefeeder, Wire marker (HS), Inkjet Dimensions (L × W × H) printing, Stacker / Coiler Weight 100 – 240VAC 435 x 397 x 360 mm 25 kg 10