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From: Dungkakthd4@gmail.com

To: Lewis@gmail.com

Subject: Ordering a machine tool

I am writing to purchase a machine tool. I was looking for some cnc machines and happened to see on your store's website so ordered two CNC milling machines 200 MC 6453 No 67398 $50,489. I want the machine to work well for the purpose of grinding flat metal surfaces and improving the speed of the working process faster. I need you to send it by November 8th.

To: HJB company, 56 River Street, London, UK. I will pay in cash on delivery.

Yours faithfully,

Nguyen Dung

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Subject: Progress Report on New Design

Dear Tim,

I am writing to provide you with a progress report on the new design project. We have finished creating preliminary designs and sketches, which we believe are promising. At this stage, we are working on the feasibility study for the rest of the week. However, we still need to develop detailed designs that will be done by the end of the month in preparation for the meeting with the client.

We understand the importance of meeting the deadline and ensuring that our designs meet the client's expectations. Our team is working diligently to ensure that every aspect of the design is carefully considered to create a unique and functional product. As of now, we are confident about our progress and believe that we are on track to deliver excellent results.

Thank you for your continuous support, and we will keep you updated on any further developments.

Best Regards,

Dung

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Now, I would like to report the problem of a robot arm . It suddenly stopped responding to commands. The problem happened yesterday, in the workshop No.8. Immediately, we has carried out some investigations. First, we examine the robot arm. Second, we tested the connections, power supply and software. Then, we found an error message on the control panel. Finally, we identified a problem with one of the servo motors. To deal with this problem, we have done some actions. First of all, we changed the faulty servo motor. Next, we replaced the old motor with a new one. After that, we ensured all connections securely. Finally, we changed the robot arm, adjust its movements and performance. The results were quite good. The robot arm functions properly again and responds to commands smoothly and accurately. To prevent similar problem, I recommend it need regular maintenance and troubleshooting. You should master the components and functions of a robot. It require skilled hands to diagnose, fix, and optimize the performance. I felt satisfied with these solutions. That's all about the problem. Thanks for reading!

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Hi Havery,

I am so excited to share with you about my education at university. I am majoring in mechanical engineering. In college, I learned skills like time management, teamwork, and problem solving skills that I know will be invaluable in my future career.

Studying at university has opened up countless opportunities, learning new things, studying specialties and internships. Of course, it is not without its challenges. Balancing academics and extracurricular activities can be difficult, but I've found that staying organized and reaching out for support when you need it is key to overcoming these challenges.

What I like most about studying at university is entering a new environment that is vibrant and full of challenges. It's truly enriching. I can't wait to catch up and hear about your own adventures!

Take care,

Dung

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I’m a people in quality assurance. Yesterday, I checked your product – the shaft and found some design mistakes. The design length of the shaft is 50 millimeters plus, minus 0.25 millimeters and the actual length of the shaft is 50.40 millimeters. Next, the diameter of the shaft in the drawing is 6.000 mm plus, minus 0.004 mm. The actual diameter is 6.015 mm. Finally, the hole depth of the shaft varies between 9.75 mm and 10.25 mm and the actual depth is 10.12 mm. Your product is rejected because the actual length of the shaft is outside the tolerant. The design diameter between 5.996 and 6.004 mm. While the real diameter is 10.12 mm. It is longer than the maximum size of the designed . I hope you can produce better products.

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The classification of material is classified by properties, electrical conductivity, thermal conductivity, hardness, ductility, softness, durability, heavy or light. The classification has four types, they are metals, polymer material, ceramic, and composite material. Metals have two main types. They are ferrous and non-ferrous. The characteristic of ferrous is iron. It has properties of strong and good electrical conductivity, heavy and prone to rust. Otherwise, the non-ferrous light does not rust but it also conducts electricity well. The characteristic of non-ferrous is copper. Still, the polymer material is divided tow main types, there are plastic and rubber. They can’t have electrical conductivity. Especially the plastic PVC is a good material. Composite materials are combinations of two or more materials, offering enhanced properties. Examples include fiberglass, carbon fiber reinforced polymers. Now, any materials are used for widling, they are steel, brass, bronze, and aluminum alloys.

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concrete is a tough and rigid material you can't cut or bend it easily

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today, I will talk about my group's robot. This is the ROBEAR S800 robot. It was manufactured and produced at Hanoi University of Industry. It weighs 70 kilograms and is 150 centimeters in height. Its maximum speed is 20 km/h. ROBEAR S800 robot has the shape of a human. It has multi-functions. It can help people clean the house, take care of the elderly and children, etc. Robots use sensors to interact with their environment. ROBEAR robot includes the following parts:

The first, the robot's head consists of two main parts: the screen and the chip. The chip's function is to process and evaluate information received from the antenna to give feedback according to the information received by the robot. Those responses will be transmitted in encrypted form to the screen. The robot will respond to humans through the screen with sound or image.

The second, on the robot's head there are 2 antennas that are control parts for positioning and orientation. The controller allows the remote operator to control the robot flexibly and accurately.

the third, the robot has 2 arms on its body. So they can lift and lower like humans. The arms connect with the hands and control them.

Next, the robot has 2 arms on its body. So they can lift and lower like humans. The arms connect with the hands and control them.

finally, our group's robot legs use wheels to help the robot move easily on any terrain. The wheel part is connected to the control system to move according to the control system's processing process.

All coordinate together, which helps the robot execute the jobs

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Hello, my name is Dung. I am a second-year student at Hanoi University of Industry, majoring in machine manufacturing at the Faculty of Mechanical Engineering. I will talk about the ideal job I will have after graduating from HaUI. I intend to work as a design engineer at TNT Company. My job involves machine design and manufacturing. My job requires a university degree or higher. Some necessary skills are teamwork, drawing,...I want to work 8 hours a day, 5 days a week because I want to spend weekends at home with my family. TNT Company offers employees many benefits such as high salaries, good working environment and modern facilities. I hope to receive a salary of $3000 to $4000 a month. I want to apply for this job because manufacturing is my dream.