CNC Router

CNC Machine

A. Safe Operational Procedures:

1. Most modern CNC machines are designed so that the cutting tool will not start unless the guard is in position. Also, the best CNC machines automatically lock the guard in position while the cutter is shaping material or have a kill switch to shut the machine down if the guard is opened.

2. It is essential that pupils / students / machine operators receive ‘quality’ instruction before attempting to use any CNC equipment.

3. CNC routers, used for shaping materials such as woods, plastics, and metals and have a built in dust extraction system. Dust can be very dangerous if inhaled and can also cause eye irritation. Most CNC machines have an outlet for an extraction unit. Most CNC routers have a fully enclosure to prevent dust from escaping.

4. The CNC router above has a single phase electrical supply. Most older machines such as manually operated milling machines and centre lathes have three phase supplies. Precautions must be followed due to high voltage.

5. Most CNC machines work behind a guard or even a closed, transparent safety door. This means that the operated cannot be hurt by 'flying' pieces of sharp/hot material.

6. Commonsense applies to the use of all machines including CNC machines. Basic safety training regarding working in a workshop and with other machines applies to CNC machines as well.

B. General Safety Practices

CNC machines start, stop and move automatically. It is important that you do not put any body parts near or over moving parts.

1. Always keep the area around the machine clear of obstacles.

2. Always stack material where you can reach it but where it is clear of the moving parts of the machine.

3. Always check that tools are sharp and set correctly.

4. Always check that the correct tool data is entered into the CNC program.

5. Always make sure that no-one is inside the CNC "cage" while the machine is in operation.

6. Always make sure that all work and fixtures are clamped securely before starting machine.

7. Always make sure spindle direction is correct for right-hand or left-hand operation.

8. Consider a dry run to ensure the program is correct.

9. Always follow board policy on correct procedures when handling or lifting parts or tooling.

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Bank of Questions: (CNC Machine)

Missing words

Short answer Questions

Please state why each of the following represent a safety hazard.