1. Resource 2 Manufacturing Techniques Machining Operations & Techniques

2. Edexcel Principles of Learning in Engineering Resource 2 Set up a Centre Lathe for a manufacturing process Set up a Milling Machine for a manufacturing process Use conventional manufacturing techniques to produce components Aims

3. Edexcel Principles of Learning in Engineering Resource 2 Objectives Set cutting tool to perform manufacturing operations Perform basic machining techniques using a Centre Lathe Perform basic machining techniques using a Milling Machine Various work holding devices used to support components Drilling using a tailstock Produce internal & external threads using hand tools

4. Edexcel Principles of Learning in Engineering Resource 2 Turning Operations

5. Edexcel Principles of Learning in Engineering Resource 2 Types of machining process using Centre Lathe Facing Turning a diameter to length Knurling Centre drilling/drilling/reaming/internal & external threads Boring Chamfering

6. Edexcel Principles of Learning in Engineering Resource 2 Face plate Revolving centre 3 jaw chuck 4 jaw chuck The 3 jaw chuck is the most commonly used work holding device on a lathe. Holds round & hexagonal shaped work pieces. The 4 jaw chuck can be used to hold a variety of components. Each jaw must be individually tightened and centred using a DTI clock The revolving centre is used to machine components between centres using the tailstock. The face plate is attached to the lathe spindle. Work pieces are clamped to the face plate using t-nuts in the slots Work holding devices

7. Edexcel Principles of Learning in Engineering Resource 2 Fig 1 Fig 2 Setting tool to centre The tool is positioned in the tool post & adjusted to centre height using packing strips. The packing strips are placed underneath the tool as shown in fig. 1. The centre is obtained by positioning a dead centre in the tailstock.

8. Edexcel Principles of Learning in Engineering Resource 2 A knurling tool moves across the side of the component producing a hatch pattern with a required force applied onto the work piece. A single point knife tool moves across the face of the component removing a small amount of material to produce a smooth flat surface. A single point knife tool moves along the side of the material removing a depth of material & producing various features like tapers & steps. Types of machining process using Centre Lathe

9. Edexcel Principles of Learning in Engineering Resource 2 Types of machining process using Centre Lathe The face plate is attached to the lathe spindle. Work pieces are clamped to the face plate using t-nuts in the slots Drilling on a Lathe can be performed using the tailstock. The Jacob's chuck is locked in the tailstock with the drill pieces secured in the chuck using a chuck key. A chamfer tool moves into the work piece, to a required depth, producing a chamfered edge

10. Edexcel Principles of Learning in Engineering Resource 2 Milling Operations

11. Edexcel Principles of Learning in Engineering Resource 2 Work holding devices Machine Vice Swivel Base Vice Clamping directly to the table V block

12. Edexcel Principles of Learning in Engineering Resource 2 How to Set a cutting tool The cutting tool is positioned in the appropriate tool holding device and locked in the spindle using a draw bar.

13. Edexcel Principles of Learning in Engineering Resource 2 Types of machining process using a milling machine Blocking out Facing Slot cutting Drilling T-slot cutting

14. Edexcel Principles of Learning in Engineering Resource 2 Blocking out procedure This process involves machining all 6 faces on a block of material.

15. Edexcel Principles of Learning in Engineering Resource 2 Milling processes

16. Edexcel Principles of Learning in Engineering Resource 2 Taps & Dies

17. Edexcel Principles of Learning in Engineering Resource 2 Cutting internal threads Internal threads are produced using the correct size tapping drill and tapping sequence. The tap wrench is rotated clockwise to feed the tap into the hole & should be relieved by half a turn every full thread. Cutting external threads External threads are produced using a die & die stock. The external diameter of the material must equal the external thread required. The die stock is rotated clockwise & should be relieved by half a turn every full thread. Taps & Dies