VEM TOOLING Interview Questions and Answers

CPK is a statistical measure used to assess the capability of a process to produce output within specification limits.

• CPK is calculated using the formula: CPK = (USL - LSL) / (6 * standard deviation)

• A CPK value greater than 1 indicates that the process is capable of producing within specification limits

• A CPK value less than 1 indicates that the process may not be capable of consistently producing within specification l

Ra in roughness tester is the average roughness value of the surface profile within a specified sampling length.

• Ra is a parameter used to quantify the roughness of a surface.

• It is calculated as the arithmetic average of the absolute values of the profile heights over the evaluation length.

• Ra provides a measure of the deviation of the surface profile from the mean line.

• It is commonly used in industries such as manufactu...read more

7QC tools are a set of quality control tools used for process improvement and problem-solving in quality management.

• Check sheets: Used to collect and analyze data in a systematic way.

• Histograms: Used to show frequency distribution of a process.

• Pareto charts: Helps identify the most significant factors contributing to a problem.

• Cause-and-effect diagrams: Used to identify and analyze potential causes of a problem.

• Scatter...read more

The 8D methodology is a problem-solving approach used in quality management to identify, correct, and prevent recurring problems.

• The 8D methodology consists of 8 steps: D0 - Plan, D1 - Team Formation, D2 - Problem Description, D3 - Interim Containment Action, D4 - Root Cause Analysis, D5 - Permanent Corrective Action, D6 - Prevent Recurrence, D7 - Recognize Team Effort, D8 - Closure and Team Disbandment

• It is commonly u...read more

A CNC machine works by using computer programs to control the movement of the machine's tools and workpiece to create precision parts.

• CNC machines use computer programs to control the movement of the cutting tools and workpiece.

• The programs are created using CAD/CAM software and converted into G-code instructions.

• The machine reads the G-code instructions and moves the tools along the specified paths to cut and shape th...read more

Current is the flow of electric charge in a circuit.

• Current is measured in Amperes (A).

• It is the rate of flow of electric charge through a conductor.

• Current can be either direct current (DC) or alternating current (AC).

Voltage is the difference in electric potential between two points in a circuit, measured in volts.

• Voltage is the force that pushes electric current through a circuit

• It is measured in volts (V)

• Voltage is the potential difference between two points in a circuit

• Higher voltage means more potential energy available to move electrons

• Examples: 120V in household outlets, 12V in car batteries