St.Hildas School,Ooty Interview Questions and Answers

The layout of a machining part involves determining the optimal arrangement of features and dimensions for efficient and accurate production.

• Consider the size and shape of the part

• Determine the necessary features and dimensions

• Arrange features and dimensions in a logical and efficient manner

• Consider the capabilities of the machining equipment

• Ensure proper tolerances and clearances

• Test and refine the layout as needed

Tapping and drill depth can be checked using depth gauges or depth micrometers.

• Use a depth gauge to measure the depth of a hole or tap by placing the gauge on the surface and lowering the probe into the hole until it touches the bottom.

• For drill depth, use a depth micrometer to measure the distance from the tip of the drill bit to the end of the flutes.

• Ensure the gauge or micrometer is calibrated and zeroed before use.

• Check the specifications for the tapping or drilling opera...read more

Perpendicularity can be checked using various tools and methods.

• Use a square or a right angle to check if the surface is perpendicular to the reference plane.

• Use a dial gauge or a height gauge to measure the deviation from perpendicularity.

• Use a laser alignment tool to check the perpendicularity of a surface or a machine axis.

• Check the perpendicularity of a hole using a cylindrical square or a bore gauge.

• Ensure that the measuring instrument is calibrated and the reference pla...read more

Flatness can be checked using various methods depending on the surface and equipment available.

• Use a straight edge or surface plate to check for gaps between the surface and the straight edge

• Use a feeler gauge to measure the gap between the surface and the straight edge

• Use a laser or optical flat to measure the flatness of a surface

• Check for any visible warping or distortion in the surface

• Compare the surface to a known flat surface using a comparator

• Use a coordinate measuring...read more

Parallelism can be checked using various methods.

• Using a dial indicator to measure the distance between two points on the surface being checked

• Using a straight edge or surface plate to check for gaps between the surface being checked and the straight edge

• Using a laser alignment tool to check for parallelism between two surfaces

• Using a coordinate measuring machine (CMM) to measure the surface and compare it to the CAD model

• Using a profilometer to measure the surface roughness ...read more