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

2. 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.

3. 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.

4. 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

5. 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.

6. 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

7. 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

8. 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?

9. 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 –

11. Metals Revision questions . . .

12. 1. What type of metal contains iron?
Ferrous

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

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

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

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

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

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

19. 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?