Dana Anand CNC Machine Operator Interview Questions and Answers for Experienced

Q1. What is difference between G code and M code
Ans. 
G code is used to control the movement of the machine, while M code is used to control machine functions.
• G code is used for specifying the movements of the machine, such as cutting speed and tool path.

• M code is used for controlling machine functions like turning on/off coolant or spindle.

• G codes are preparatory functions, while M codes are auxiliary functions.

• Example: G01 is a G code for linear interpolation, M06 is an
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Q2. What is m01 and how is it work
Ans. 
m01 is a program stop command used in CNC machining to pause the machine at a specific point in the program.
• m01 is a code used in G-code programming to temporarily stop the CNC machine

• It is often used for tool changes, inspection, or to manually adjust the workpiece

• The machine will remain paused until the operator manually resumes the program
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Q1. Tell me about yourself?
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Q2. Parameters of costing?
Ans. 
Parameters of costing refer to the factors that influence the cost of a product or service.
• Parameters can include materials, labor, overhead, and profit margin.

• Other factors like transportation costs, taxes, and market demand can also impact costing.

• Understanding and analyzing these parameters is crucial for accurate pricing and cost control.

• For example, in manufacturing, the cost of raw materials and labor are key par
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Problem and route cause

Q1. Process and risk assessment
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Q1. Quality tools and assurance activities
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Q1. How to handle customer complain used quality tool
Ans. 
Use quality tools like Pareto chart, fishbone diagram, and 5 Whys to analyze and address customer complaints.
• Identify the root cause of the complaint using tools like fishbone diagram.

• Prioritize the issues using a Pareto chart to focus on the most critical problems first.

• Use the 5 Whys technique to dig deeper into the root cause of the complaint.

• Implement corrective actions based on the analysis to prevent similar comp
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Q1. 7qc tools & describe it as per example
Ans. 
7QC tools are a set of quality control tools used for process improvement and problem-solving.
• Check sheet: Used to collect and analyze data, such as tallying defects in a manufacturing process.

• Pareto chart: Helps identify the most significant factors contributing to a problem, based on the 80/20 rule.

• Cause and effect diagram (Fishbone diagram): Used to identify and analyze potential causes of a problem.

• Histogram: Repre...read more
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Q2. Difference between QA & QC
Ans. 
QA focuses on preventing defects in the process, while QC focuses on identifying defects in the product.
• QA is process oriented, focusing on preventing defects by improving processes and procedures.

• QC is product oriented, focusing on identifying defects through testing and inspection.

• QA involves activities like reviews, audits, and process improvements.

• QC involves activities like testing, inspections, and quality contro...read more
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Q3. Define of FMEA TYPE
Ans. 
FMEA stands for Failure Modes and Effects Analysis, a systematic method for identifying and preventing potential failures in a system.
• FMEA is a structured approach to identifying and prioritizing potential failure modes in a system.

• It involves analyzing the potential effects of these failures and developing mitigation strategies.

• FMEA helps in improving the reliability, safety, and quality of a system or process.

• There a...read more
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Q4. Process & product audit type of poka yoke
Ans. 
Process & product audit type of poka yoke ensures errors are prevented during audits.
• Poka yoke in process audit involves using checklists to ensure all steps are followed correctly

• Poka yoke in product audit involves using sensors to detect defects before they occur

• Examples include using color-coded labels to prevent mix-ups in audits
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Q5. 8D Capa, 5S, pervios company job profile and DWM
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Q1. Write NC program PFMEA details and knowledge of depth to proportion GD&T Past company experience and technical knowledge, cast reduction, process knowledge
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Q1. Technical round 2. Interviewed by ME head. Capacity calculation,line balancing,PPAP,APQP,MSD,machine selaction, process selection.
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