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Why is it important to tie back long hair when operating a CNC machine?
To prevent long hair from becoming entangled in drive mechanisms.
What type of shoes should be worn when operating a CNC machine?
Safety shoes with steel toe caps and oil-resistant soles should be worn.
Why is it important to wear a protective mask when machining magnesium alloys?
To protect yourself from the hazards of machining magnesium alloys.
What should be done to ensure safe machine operation?
Always follow safety guidelines and precautions, such as using protective equipment, ensuring proper machine setup, and avoiding loose clothing or entanglement hazards.
What is the importance of checking electrical cables for damage?
To prevent accidents due to current leakage or electric shock.
Why should operators not handle coolant with bare hands?
Because coolant can cause irritation, and operators with allergies should take special precautions.
What should be done during violent thunderstorms?
Do not operate the machine.
How should safety covers be maintained?
Check the safety covers regularly to ensure they are properly fitted and not damaged, and repair or replace any damaged covers immediately.
What should be done when handling loads beyond one's capacity?
Always obtain assistance.
What should be done if the machine door, cover, or other glass sections are found to be damaged?
Immediately stop the machine and replace the damaged sections.
Why should fork lifts or cranes not be operated without officially approved training?
To prevent accidents and ensure safe operation.
What should be done when using fork lifts or cranes?
Make sure there are no obstructions in the vicinity of these machines.
What type of wire rope or slings should be used for lifting?
A standard suitable for the load to be supported.
When should the position of the coolant nozzle be adjusted?
After the machine has come to a complete stop.
Why should safety devices such as stop dogs, limit switches, or interlocks not be removed or interfered with?
To prevent accidents and ensure safe operation.
Why should safety covers not be removed during machine operation?
To prevent accidents and ensure safe operation.
How should chips be cleaned off the tool tip?
Using gloves and a brush, never with bare hands.
What should be done before mounting or removing a tool?
Stop all machine operations.
How should slings, chains, hoists, and other lifting gear be maintained?
Check for defects before use and repair or replace defective gear immediately.
What should be considered when operating medical electrical devices near the NC machine tool?
Electromagnetic waves are radiated from the NC machine tool, so consult the manufacturer and physician to determine if operations are safe.
Why is it important to write a program for the warming-up operation?
To execute the functions of the full range of machine components and to pay meticulous attention to the warming-up operation, especially at spindle speeds above 4000 min-1.
What should be done during heavy-duty cutting?
Do not allow chips to accumulate, as they can be hot and start a fire.
How should the spindle and axis motion mechanisms be warmed up?
Operate the machine in automatic mode for 10-20 minutes at maximum spindle speed or 1/3 to 1/2 maximum axis motion speed.
Why should operating panel switches not be operated while wearing gloves?
To prevent incorrect operation or mistakes.
What should be done after completing a series of operations?
Switch off the power supply to the NC unit, the main power disconnect switch of the machine, and the factory power supply.
What should be considered when handling workpieces and tooling?
Always use suitable tools and conform to machine specifications, observe restrictions on mass of tool insert and tool diameter.
How should the workpiece be mounted?
Securely, to prevent detachment during machining.
What should be done with badly worn tools?
Replace them promptly to prevent accidents and injuries.
How should tools be mounted in the machine?
Make sure the tool and its stud bolt are properly secured.
What should be considered when rotating cutting tools?
Do not rotate at speeds higher than the rated speed, and check maximum safe operating speeds with the manufacturer.
How should fingers be protected during workpiece holding?
Be careful not to catch fingers in workpiece holding devices.
What should be considered when lifting heavy fixtures and workpieces?
Always use the correct lifting gear.
How should cutting tools be arranged in the tool magazine?
Correctly, in accordance with the tool data set in the TOOL LAYOUT screen.
What should be checked during maintenance?
Make sure the machine is switched off, and check for residual voltage and discharge capacitors.
Who should perform maintenance of electrical equipment?
Qualified licensed electrical engineers only.
What should be done when carrying out maintenance in high places?
Use a suitable ladder or service platform, and always wear a helmet.
How should maintenance areas be kept?
Clean and tidy at all times, with water or oil spills wiped up immediately.
What should be used as replacement or consumable parts?
Specified and standardized parts to maintain the as-shipped machine specifications.
What is the importance of checking the rating of a new fuse when replacing it in a CNC machine?
Using a fuse with too high a rating could result in damage to the equipment.
Why is it necessary to follow the instructions on the instruction plate concerning lubrication and oil change intervals?
To ensure proper machine operation and prevent damage to the equipment.
What should you do before cleaning the machine or the surrounding area?
Stop all machine operation.
How should substances with adverse environmental effects from CNC machine tools be disposed of?
Dispose of them in accordance with the laws of the country concerned, entrusting the processing to a contractor who deals with industrial waste.
What should be done immediately in case of water or oil spills on the floor?
Remove the spills and dry the floor to prevent accidents.
Why is it important to provide sufficient lighting in the work area?
To ensure a safe working environment.
What should you never do on top of the headstock, turret, or covers?
Place tools or other potentially dangerous objects.
What is the importance of checking the normal cross-sectional area of the power supply cable?
To ensure a stable power supply for machine operation at maximum output.
How should cables on the floor be protected?
Protect them from being damaged by chips to prevent short-circuiting.
What precaution should be taken before working on the chip conveyor?
Make sure the chip conveyor is in a complete stop state with power supply shut off.
What should you never do while the chip conveyor is operating?
Touch or extend your hands into any part of the chip conveyor.
Why should you not put your hands or body under the chip discharge part?
To avoid injuries caused by chips from the chip conveyor.
What should never be canceled in a CNC machine?
Safety devices.
What could happen if you fail to observe the safety devices?
Serious harm to a human life or body.
What should you confirm before using cutting conditions recommended by the NC?
Every necessary precaution in regards to safe machine setup, especially for workpiece fixturing/clamping and tool setup.
Why is it important to confirm that the machine door is securely closed before starting machining?
To prevent serious injury or death.
What is the purpose of safety nameplates on a CNC machine?
To prevent accidents by warning operators of potential hazards.
What should operators and related personnel do with the safety nameplates?
Fully memorize and understand the precautions to strictly follow them without reading or referring to the nameplates each time an operation is performed.
What is the function of the operator's door interlock?
The operator's door interlock prevents the door from being opened during automatic operation, and allows it to be opened only when the machine is stopped.
What should be done to open the operator's door?
Press the door unlock button while the machine is stopped.
What is the maximum axis feed and spindle rotation speed when the operator's door is open?
Axis feed: 2 m/min (79 IPM), Spindle rotation: 50 min-1.
What happens when the emergency stop button is pressed?
The machine stops in the emergency stop state, independent of the selected operation mode (automatic, manual).
What is the purpose of the safety plates on the machine?
To provide important safety information to operators during operation.
What should be done if a safety plate is damaged or lost?
Order a replacement plate using the part number stamped on the plate, and replace the existing one with the new one.
What is the function of the spindle on the machine?
The spindle is driven by an AC inverter motor and is used to clamp a cutting tool, which is then used for machining.
How is the spindle cooled on the machine?
Cooling fluid is circulated around the spindle outer casing to minimize temperature rise due to heat generation from the bearings.
What is the function of the X-axis on the machine?
The X-axis is driven by an AC servomotor and a ball screw, and is used to move the column longitudinally.
What is the function of the Y-axis on the machine?
The Y-axis is driven by an AC servomotor and a ball screw, and is used to move the spindlehead vertically.
What is the function of the Z-axis on the machine?
The Z-axis is driven by an AC servomotor and a ball screw, and is used to move the table in the crosswise direction.
What is the function of the ATC (Automatic Tool Changer) on the machine?
The ATC mounts and removes tools from the spindle.
What is the function of the tool shifter on the machine?
The tool shifter carries a tool between the magazine and the ATC unit, and changes the phase of the key groove in a tool.
How does the spindle cooling circuit work in a CNC machine?
The cooling fluid absorbs heat from the spindle and is cooled by the radiator and the fan, and then the cooled oil is circulated back to the tank.
What are the two functions of coolant in a CNC machine?
To cool cutting tools and to wash away chips.
What is the purpose of the covers in a CNC machine?
To prevent chips from scattering outside the machine or entering the slideway surfaces, and to protect operators from hazards.
What type of lamps are used as machine light in a CNC machine?
LED lamps.
What should you do before removing the maintenance cover in a CNC machine?
Set the main power disconnect switch to the 'OFF' position and lock it.
Why is regular inspection and maintenance essential for a CNC machine?
To maintain high accuracy for a long period.
What should you not use when cleaning inside the machine and peripheral equipment?
Compressed air, as it will cause chips, sand grit, dust, and other foreign matter to enter the bearings and slideways, causing machine failure.
How should you lock the main power disconnect switch before carrying out maintenance or repair work on a CNC machine?
In the 'OFF' position with a padlock, so that other workers cannot operate the machine.
What is important to note when supplying oil to a CNC machine?
Not to supply oil excessively.
What should you check if lubricating oil is consumed faster than usual or if the machine generates abnormal noise?
The machine, as it could be a sign of machine failure.
What is the purpose of the X-axis in a CNC machine?
Spindle head movements in the longitudinal (right/left) direction.
What is the positive direction of the Y-axis in a CNC machine?
Spindle head upward movement.
What is the purpose of the Z-axis in a CNC machine?
Table movement in the crosswise (forward/backward) direction.
What is the daily maintenance task for inside the machine?
Removing chips from on top of the spindlehead, removing chips from the area near the ATC door, removing chips from on top of the Z-axis way cover, removing chips on the pallet change arm, and cleaning the window in the operator's door.
How often should the air filter of the compound oil control unit be cleaned?
Every week, 60 hours of operation.
What is the monthly maintenance task for inside the machine?
None specified.
Why is it important to clean the plate filter and the bucket filter in the coolant tank?
To ensure the coolant system operates effectively and prevent contamination.
How often should the spindle cooling fluid level be checked?
Daily.
What is the purpose of cleaning the chip bucket outside the machine?
To prevent chip accumulation and maintain a clean working environment.
What should be done every 3 months, 750 hours of operation, for inside the machine?
Refer to the manual section 4-3-1.
Why is it important to check the hydraulic oil level daily?
To ensure the hydraulic system operates effectively and prevent damage due to low oil levels.
What is the recommended frequency for cleaning the strainer of the compound oil control unit?
Refer to the manual section 4-7-2.
What is the purpose of cleaning the electrical control cabinet cooling air filter?
To ensure proper cooling and prevent overheating of the electrical components.
What is the purpose of checking the coolant level in a CNC machine?
To ensure proper functioning of the machine and prevent overheating, dimensional errors, and tool breakage.
How often should you check the lubricating oil level in the table unit of a CNC machine?
The lubricating oil level in the table unit should be checked daily.
What is the recommended interval for replenishing slideway and ball screw lubricating grease?
The slideway and ball screw lubricating grease should be replenished every 10 hours of operation.
Why is it essential to check the air pressure in a CNC machine?
To ensure the proper functioning of pneumatic systems and prevent damage to the machine and its components.
What is the purpose of checking the hydraulic unit oil pressure in a CNC machine?
To ensure the proper functioning of hydraulic systems and prevent damage to the machine and its components.
When should you change the hydraulic oil of a table unit in a CNC machine?
The hydraulic oil of a table unit should be changed every 4-7-1 hours of operation.
What is the recommended interval for removing chips from on top of the spindlehead in a CNC machine?
Chips should be removed from on top of the spindlehead daily.
Why is it important to check the amount of grease used for slideway lubrication in a CNC machine?
To ensure proper lubrication of slideways and prevent wear and damage to the machine's components.