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Identify any three of the lathe parts shown: (i) (ii) (iii) (iv) Describe, using sketches, any one of the following lathe turning operations: Taper turning - Leaving Cert Engineering - Question 6 - 2008
Question 6
Identify any three of the lathe parts shown: (i) (ii) (iii) (iv) Describe, using sketches, any one of the following lathe turning operations: Taper turning. Knurl... show full transcript
Worked Solution & Example Answer:Identify any three of the lathe parts shown: (i) (ii) (iii) (iv) Describe, using sketches, any one of the following lathe turning operations: Taper turning - Leaving Cert Engineering - Question 6 - 2008
Step 1
Identify any three of the lathe parts shown: (i)
Answer
- Tailsock: A component used to support the non-driven end of the workpiece.
- 3 Jaw Self Centering Chuck: A clamping device that securely holds the workpiece in place.
- Centre Drill: A tool used to create a small, conical hole at the end of a workpiece to facilitate accurate centering.
Step 2
Describe, using sketches, any one of the following lathe turning operations: Taper turning.
Answer
In taper turning, the top slide of the lathe is set to an angle to produce a conical shape. The cutting tool must be positioned correctly to ensure the diameter of the workpiece changes as it is turned. Diagrams should illustrate the setup with the tool at an angle.
Step 3
State two safety precautions to be observed for the turning operation selected at 6(b)(i).
Answer
- Ensure Tool is Secure: Before starting, make sure that the cutting tool is firmly fixed in the tool holder to prevent accidents.
- Wear Safety Gear: Always wear protective goggles and a dust mask to protect against flying chips and debris.
Step 4
State two reasons why a lathe cutting tool must be set on centre before machining.
Answer
- To Establish Correct Tool Geometry for Cutting: Ensuring the cutting tool is at the correct height optimizes cutting efficiency and quality.
- To Ensure Proper Material Removal: Positioning the tool correctly allows for effective facing and surfacing, removing all material evenly.
Step 5
Explain any two of the following terms in relation to a CNC lathe: (i) Emergency stop.
Answer
The emergency stop is a crucial safety feature on a CNC lathe, allowing immediate cessation of all machine operations. It is activated to prevent accidents in case of an emergency, ensuring the safety of the operator.
Step 6
Explain any two of the following terms in relation to a CNC lathe: (ii) Simulation.
Answer
Simulation is a pre-manufacturing process where the machining of a component is visualized on the computer screen. It allows operators to identify potential errors and optimize operations before actual machining.