BTEC First Engineering Learning aim A Know about engineering processes used to produce modern engineered products

Learning objectives: - Bigger picture: - Know about engineering processes used to produce modern engineered products Learning objectives: - Be able to explain what is meant by the term secondary machining Describe the machining process and correct health and safety procedures to be followed when turning, milling and drilling Success criteria: - Provide a definition for different machining operations Correctly identify the sequence of machining for turning, milling and drilling.

Machining processes: The manufacture of engineered products or parts often requires the removal of material and some form of shape change. This is known as secondary machining or ‘forming’. Traditional secondary machining techniques fall into 3 main groups.

Categories of metals . . . There are 3 main types of secondary machining techniques as an Engineer student you need to be aware of: Turning Milling Drilling

Turning . . . Turning involves the use of the lathe to produce a given shape, usually cylindrical. Lathes have one thing in common: the work piece is held in a chuck and rotated while being machined to shape and size using a cutting tool.

Lesson task: Look at the common machining operations for lathe work Match up the operation with the description: Operation: Facing off Drilling Parallel turning Taper turning Parting off Description: A process used to cut off the work piece to the required length Removing material from the outer diameter of the work piece while maintaining the same size along its length Removing material from the end of a work piece to leave flat or square surface Removing material from the inside of a work piece using a drill bit A process used to create a conical shape by feeding a tool at an angle to the length of the work piece

Non - Ferrous . . . There are many useful metals and alloys that do not contain iron. Most of the common non-ferrous metals have good corrosion resistance and do not require surface finishes. Common non-ferrous metals include: Aluminium Titanium Zinc Pure copper Bronze + brass

Lesson task: Look at the common non-ferrous metals Read each property carefully and decide on the type of metal and what they would be used for. METAL PROPERTIES EXAMPLES OF WHAT IT IS USED FOR?  

Metals used within the manufacture of a bicycle: Frame: Material – Reason – Wheel rim: Material – Reason – Chain: Material – Reason – Brake lever: Material – Reason – Pedals: Material – Reason – Spokes: Material – Reason –

Metals Revision questions . . .

1. What type of metal contains iron? Ferrous

2. What is a common use for stainless steel? Sinks, kettles, medical equipment, knives and forks.

3. A mixture of 2 or more metals is called a? Alloy

4. What type of metals do not contain iron? Non ferrous

5. Which metal is the most commonly occurring material in the earths crust? Aluminium

6. True or false – titanium is stronger than aluminium?

6. What metal is an alloy of copper and tin? Bronze

Learning objectives: - Be able to explain what is meant by the term ferrous and non-ferrous metals Describe the properties and typical uses of ferrous and non-ferrous metals How confident do you feel in relation to your learning within today’s lesson? Which Blob are you and why? Do you feel you have achieved the learning objectives?