Topic 3.1 to 3.3: Perform CAM Programming

In the precision engineering industries, the abbreviation CAM is often refer to

• Computer And Machine.

• Computer Assist Machining.

• Computer Aided Machining.

• Computer Automation Manufacturing.

The simultaneous motion of all 3 axes of a CNC milling machine to produce an irregular surface or contour is known as

• 3D milling.

• z-level milling.

• trochoidial milling.

• high speed milling.

Calculate the spindle speed for a Ø63 mm face mill cutter with a cutting speed of 250 m/min. Given pi = 3.14

• 785 rpm

• 1026 rpm.

• 1264 rpm.

• 3968 rpm.

Which one of the following factors in relation to selection of cutting speed is false?

• Cutter material.

• Type of work material.

• Surface finish required.

• Cost of cutter to be used.

A four fluted Ø16 mm endmill is used to mill steel material at 2000 rpm. Find the table feed in mm/min if the feed/tooth is 0.08 mm.

• 160 mm/min.

• 320 mm/min.

• 480 mm/min.

• 640 mm/min.

Carbide insert is used in CNC milling because it

• can be re-sharpened easily.

• is capable of forming built-up edge.

• is capable of operating at high cutting speed.

• can be easily purchased from the open market.

The advantage of using CAM in NC programming is

• tool paths can be easily corrected.

• capable of machining material with high accuracy.

• cutting tools are selected by the system automatically.

• part program generated are used by all machines and control system.

In CAM application for CNC milling, one of the strategies used to remove unwanted material to form irregular profile is known as

• slot milling

• pocket milling.

• contour milling.

• conventional milling.

The purpose of coating a thin layer of aluminum oxide on a cemented carbide tool is to

• reduce tool life.

• reduce hardness.

• reduce wear resistance.

• increase wear resistance.

The cut pattern that machines in a series of parallel straight line passes is called

• zig.

• zig-zag.

• follow part.

• trochoidial.