NBC Bearings CNC Machine Operator Interview Questions and Answers

The least count of a vernier calliper and micrometre refers to the smallest measurement that can be accurately read on the instrument.

• The least count of a vernier calliper is typically 0.02 mm or 0.001 inches.

• The least count of a micrometre is typically 0.01 mm or 0.001 inches.

• The least count is determined by the number of divisions on the main scale and the vernier scale.

• For example, if the main scale has divisions of...read more

There are several types of welding, including MIG, TIG, Stick, and Flux-Cored welding.

• MIG welding uses a wire electrode and a shielding gas to join two pieces of metal together.

• TIG welding uses a tungsten electrode and a filler metal to create a strong bond between two metals.

• Stick welding uses a consumable electrode coated in flux to create an arc and join two metals together.

• Flux-Cored welding uses a wire electrode w...read more

Arc welding uses an electric arc to melt and join metals, while spot welding uses pressure and heat to join two metal surfaces.

• Arc welding involves creating an electric arc between an electrode and the metal being welded, which melts the metal and fuses it together.

• Spot welding involves applying pressure and heat to two metal surfaces, which creates a small weld at the point of contact.

• Arc welding is typically used for...read more

TPM stands for Total Productive Maintenance. It is a systematic approach to equipment maintenance that aims to maximize productivity and minimize downtime.

• TPM focuses on proactive and preventive maintenance to keep equipment in optimal condition.

• It involves training employees to perform routine maintenance tasks and identify potential issues.

• TPM aims to eliminate equipment failures and breakdowns, leading to increased ...read more

Kanban is a lean manufacturing system that helps manage and improve workflow.

• Kanban originated in Japan and means 'visual signal' or 'card'.

• It uses visual cues, such as cards or boards, to signal when work should be started or completed.

• Kanban helps teams prioritize work, reduce waste, and improve efficiency.

• It is commonly used in software development, but can be applied to any industry.

• Kanban boards can be physical or...read more

Grinding is the process of removing material from a workpiece using an abrasive wheel or belt.

• Grinding is a common machining process used in manufacturing.

• It involves removing material from a workpiece using an abrasive wheel or belt.

• The goal of grinding is to achieve a smooth surface finish or to remove excess material.

• Grinding can be done manually or using a machine.

• Examples of grinding include surface grinding, cyli

Grinding defects refer to the problems that occur during the grinding process.

• Burns

• Cracks

• Chatter

• Glazing

• Loading

• Mismatch

• Tearing

Man power can be utilized by assigning tasks based on their skills and strengths.

• Identify the strengths and skills of each employee

• Assign tasks based on their strengths and skills

• Provide training and development opportunities to enhance their skills

• Encourage teamwork and collaboration

• Monitor progress and provide feedback

• Recognize and reward good performance

SMED stands for Single Minute Exchange of Die, a lean manufacturing technique to reduce setup time.

• SMED is a process to reduce the time it takes to changeover a production line from one product to another.

• It involves breaking down the setup process into smaller steps and finding ways to streamline them.

• The goal is to reduce setup time to less than 10 minutes, hence the name Single Minute Exchange of Die.

• Examples of SME...read more

Scrap reduction can be achieved by identifying the root cause of scrap, implementing process improvements, and training employees.

• Conduct a thorough analysis of the production process to identify the root cause of scrap

• Implement process improvements such as better quality control measures and equipment maintenance

• Train employees on proper handling and use of equipment to reduce errors and scrap

• Regularly monitor and tra...read more