Emmbros Autocomp VMC Machine Operator Interview Questions and Answers

2stroke engines have a power cycle in 2 strokes of the piston, while 4stroke engines have a power cycle in 4 strokes.

• 2stroke engines have a simpler design with fewer moving parts compared to 4stroke engines.

• 2stroke engines produce more power per cycle but are less fuel efficient than 4stroke engines.

• Examples: Motorcycles often use 2stroke engines, while cars typically use 4stroke engines.

Turning, threading, and knurling are common machining operations used in manufacturing processes.

• Turning is the process of removing material from a workpiece to create a cylindrical shape. It is typically done on a lathe machine.

• Threading is the process of creating helical grooves on the inside or outside of a cylindrical workpiece. It is commonly used for creating screws, bolts, and nuts.

• Knurling is a process of creat...read more

Types of welding include MIG, TIG, stick, and flux-cored welding.

• MIG welding uses a wire electrode and shielding gas to create a strong bond.

• TIG welding uses a tungsten electrode and inert gas for precise and clean welds.

• Stick welding uses a consumable electrode coated in flux to create a strong bond.

• Flux-cored welding uses a tubular wire filled with flux for outdoor and windy conditions.

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

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.

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.

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