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