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MECHANICAL ENGINEERING DEPARTMENT LAB SHEET Programme



Diploma Engineering in Mechatronic



Course code



DJM20022 : Mechatronic Workshop Practice 2



Title Name No Matric



CNC Turning / Milling Muhammad Akmal Hazim Bin Razali 14DEM19F1013



Specific Objective:



Upon completion of this laboratory, students should be able to:



Conduct Programming and operate CNC lathe Machining work in actual or by simulation



THEORY :



CNC Turning machines and convertional turning machines each have the same basic components, such as the main motor, the spindle, the bed, the tool turret, the headstock, the cross-slide, the carriage and the way systems. However, CNC Turning machines, in addition, are outfitted with a computerized control and servomotors to operate them.



Manual CNC Turning can be very versatile and productive machine tools, but when coupled with a CNC, they become the ‘high tech production turning machines’ of the machine shop. Additionally, repetitive operations such as turning, facing and boring are ideal machining applications for CNC Turning machines.



CNC Turning machines can also be designed to include a variety of optional components and features. These options are basically designed to reduce setup time, part handling and cycle time. For instance, one option for minimizing part handling time is to add a part loading magazine or a robot arm. The maximum spindle speed (RPM) of a CNC Turning machines can also very depending on the need or application.



The factors that determine the spindle speed range selected can include the type of part materials, the part sizes and the annual part production quantities to be machined. Another factor that influences the spindle speed range is the type of tool cutter material that will be used, such as HSS, coated carbide, diamond and ceramic.



High-production turning machines can be designed with dual chucks that enable a part to be machined on both ends. Also, live tooling can be incorporated that allows milling and drilling at various angles. Other options may include a second or third turret, a bar feeder, a parts catcher, a steady rest follower and a tool setter.



APPARATUS:



CNC Turning Machine Bridgeport, Aluminium rod diameter: 38mm



SAFETY PRECAUTION:



1. Always wear safety glasses and hearing protection when operating CNC machines. 2. Always wear safety glasses when closely observing cutting tools. 3. Always wear safety boots or other suitable footwear. 4. Always keep long hair covered when operating CNC machines. 5. Always keep hands clear of moving parts during machining operations. 6. Always stand clear of the machine while it is running and warn others of the dangers of being too close. 7. Always avoid contact with cutting edges when handling tools or changing tools by hand.



DESIGN OF PROJECT:



TASK: 1. Write the programming based on drawing information given or your own drawing 2. Key-in the programming to CNC Turning Machine 3. Run the simulation on graphic profile 4. Run the machine to get the product.



REFERENCES:



1. Bawa. (2004). Manufacturing Process 1. McGraw-Hill 2. Bawa. (2004). Manufacturing Process 2. McGraw-Hill 3. Che Abas Che Ismail (2000). Rekabentuk Pembuatan Terbantu Komputer. UTM 4. S.K. Krar,J.W.Oswald.(1976) Technology of Machine Tools. McGraw-Hill