Varun Motors Interview Questions and Answers

Cutting tools are made of various materials depending on the application.

• High-speed steel (HSS) is commonly used for general-purpose cutting tools.

• Carbide is used for cutting hard materials like steel and titanium.

• Ceramics are used for high-speed cutting of cast iron and other hard materials.

• Diamond is used for cutting non-ferrous materials like glass and ceramics.

• Cobalt steel is used for cutting stainless steel and other high-temperature alloys.

G17, G18, and G19 are G-codes used in CNC machining to specify the plane of operation.

• G17 is used to set the XY plane as the plane of operation.

• G18 is used to set the XZ plane as the plane of operation.

• G19 is used to set the YZ plane as the plane of operation.

• These G-codes are essential for programming CNC machines to ensure correct tool movements and orientations.

• For example, G17 would be used when machining a flat surface on a workpiece.

• Understanding and correctly using the...read more

1mm is equal to 1000 microns.

• 1mm = 1000 microns

• Micron is a unit of measurement for length equal to one millionth of a meter

• Microns are commonly used in manufacturing and engineering applications

The least count of a vernier caliper is the smallest measurement that can be accurately read on the scale.

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

• It is calculated by dividing the smallest division on the main scale by the number of divisions on the vernier scale.

• For example, if the smallest division on the main scale is 0.1 mm and the vernier scale has 10 divisions, the least count would be 0.01 mm.

• The least count repre...read more

Turning in CNC machine refers to the process of rotating a workpiece on a lathe while a cutting tool removes material to create a cylindrical shape.

• Turning is a common operation in CNC machining, especially for creating cylindrical parts like shafts, rods, and tubes.

• During turning, the workpiece is clamped and rotated while a cutting tool moves parallel to the axis of rotation to remove material.

• The cutting tool can be stationary or moved along the workpiece to create differe...read more

Communicate openly, respectfully, and professionally with all associates to build positive relationships.

• Listen actively to understand others' perspectives

• Use clear and concise language

• Show empathy and respect towards others

• Be open to feedback and constructive criticism

• Maintain a positive attitude and approachable demeanor

• Avoid gossip or negative talk about colleagues

• Seek common ground and find ways to collaborate effectively

CNC stands for Computer Numerical Control.

• CNC is a manufacturing process that uses computerized systems to control machine tools.

• It involves the use of pre-programmed software to dictate the movement of machinery and tools.

• CNC machines are capable of producing highly precise and complex parts.

• Examples of CNC machines include milling machines, lathes, and routers.

M06 is a code used in CNC machining to perform a tool change.

• M06 is a standard code used in CNC programming.

• It is used to initiate a tool change during machining operations.

• The code is followed by the tool number or identifier.

• For example, M06 T02 would indicate a tool change to tool number 2.