L.G.Balakrishnan & Bros Machine Operator Interview Questions, Process, and Tips

Q1. What is g code
Ans. 
G code is a programming language used to control CNC machines.
• G code is a standardized language used to instruct CNC machines on how to perform specific tasks.

• It consists of letters and numbers that represent different commands and parameters.

• For example, G00 is a rapid move command that tells the machine to move quickly to a specified position.

• G01 is a linear interpolation command that tells the machine to move in a s...read more
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Q2. What is m code
Ans. 
M code is a standard set of machine codes used to control CNC machines.
• M codes are used to activate or deactivate certain functions on a CNC machine.

• They are typically used for tool changes, coolant control, spindle speed, and other machine functions.

• Examples of M codes include M06 for tool change and M08 for coolant on.
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Q1. Haw to give offset
Ans. 
To give offset in CNC machining, adjust the tool position relative to the workpiece.
• Access the offset settings on the CNC machine control panel.

• Enter the desired offset values for length, width, and height adjustments.

• Verify the offset adjustments by running a test program on scrap material.

• Make fine adjustments as needed to achieve the desired machining results.
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Q2. Haw to start cnc
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To start a CNC machine, power on the machine, load the program, set the workpiece, and press the start button.
• Power on the CNC machine by flipping the switch

• Load the program into the machine's control panel

• Set the workpiece securely in place on the machine bed

• Press the start button to begin the machining process
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Q1. Share details of your previous job.
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Q2. Why should we hire you?
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Q3. Why are you looking for a change?
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Q4. What are your strengths and weaknesses?
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Q5. Tell me about yourself.
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Details of instruments , introduction

Q1. Least count of micrometres,vernier caliper,what is gauge ,types of gauge, how to measure from micrometres , how to reading ,what is dial indicator ,what's work of dail indicator
Ans. 
The interview question covers topics related to measuring instruments such as micrometres, vernier calipers, gauges, and dial indicators.
• Least count of micrometres is the smallest measurement that can be read by the instrument.

• Vernier calipers are used to measure the internal and external dimensions of objects.

• Gauges are tools used to measure the thickness, diameter, or distance between two surfaces.

• Types of gauges inc...read more
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Q2. Find least count of micrometres , vernier caliper
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The least count of micrometres in a vernier caliper is typically 0.01 mm or 0.001 cm.
• The least count is the smallest measurement that can be read on the instrument.

• In a vernier caliper, the main scale typically has graduations of 1 mm or 0.1 cm.

• The vernier scale has 10 divisions that cover 9 main scale divisions, resulting in a least count of 0.01 mm or 0.001 cm.
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Q3. What is gauge , types of gauge
Ans. 
Gauge is a measuring tool used to determine the size or amount of something. Types include pressure, thickness, and radius gauges.
• Gauges are used in various industries such as automotive, aviation, and manufacturing.

• Pressure gauges measure the pressure of liquids or gases, while thickness gauges measure the thickness of materials.

• Radius gauges are used to measure the radius of curved surfaces.

• Other types of gauges incl...read more
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Q1. Cnc machining operation
Ans. 
CNC machining operation involves using computer-controlled machines to shape materials like metal or plastic.
• CNC machines use computer programs to control the cutting tools and produce precise shapes.

• Operators must have knowledge of programming, tooling, and materials to ensure accurate results.

• Examples of CNC machining operations include milling, turning, drilling, and grinding.
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Q2. Machining mantines
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Q1. How much experience do you have operating a forklift?
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Q2. Why did you leave your last job/why do you want to your current job?
Ans. The current job is very hard so I am going to quit that job
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Q3. What shifts have you worked?
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