WorksheetsCIM Unit 2
Total questions: 30
Worksheet time: 15mins
System using computer technology to control production processes and equipment.
Computer-Aided Manufacturing (CAM)
Industry
Gadget
Cartesian coordinate system
Manufacturing program that combines automation with manual tasks.
Vector
MIG Welding
TIG Welding
Computer-Integrated Manufacturing (CIM)
The automation of machine tools by means of computers executing pre-programmed sequences of machine control commands among multi-axis coordinate planes.
Computer Numerical Control (CNC)
Computer Alphabetical Control (CAC)
Computer Cryptographic Control (CCC)
Machinery that has sensing and control devices that enable it to operate automatically.
Manual
Biotech
Nanotechnology
Automation
A CNC router bit that is flat and used to clear a flat area.
V-Bit
End Mill
Ball Nose
O Flute
G00 is used for _________
Linear
interpolation
Positioning
rapid traverse
Circular
interpolation
Zero
Return
In the
program letter “T” used for_____
Sequence
Number
Program
number
Tool
Number
speed function
In the
program letter “F” is used for_______
Sequence
Number
Program
number
speed
function
Feed
function
Which of the following code will give linear interpolation movement?
G00
G01
G21
G41
Which of the following code will give circular interpolation in a clockwise direction?
G56
G02
G71
G11
Which of the following code will give circular interpolation in Counterclockwise direction?
G00
G56
G69
G03
During the execution of a CNC part program block NO20 GO2 X45.0 Y25.0 R5.0 the type of tool motion will be
circular Interpolation – clockwise
circular Interpolation – counterclockwise
linear Interpolation
rapid feed
The reference will change continuously in ________ co-ordinate system
ABSOLUTE
POLAR
INCREMENTAL
NONE
System in which positions are given with respect to a fixed point, usually the origin.
Absolute
Relative
Incremental
Modal
The horizontal distance between each pass. (usually half of DIA.
Step over
Stock to leave
Lead in
Stock offset
The number of revolutions per minute (RPM) that is made by the cutting tool of the machine.
Spindle Speed
Feed
axis
tool path
The distance advanced by the cutting tool along the length of the work for every revolution of the spindle.
Spindle Speed
Feed
axis
tool path
What is cutting speed in CNC machining?
The speed at which the cutting tool moves across the workpiece.
The amount of lubrication used during the machining process.
The temperature at which the CNC machine operates.
The number of pieces produced in a specific time frame.
What factors affect cutting speed in CNC machining?
Color of the machine, size of the factory, and brand of the cutting tool
Number of operators, time of day, and music playing in the background
Temperature, humidity, and air pressure
Material type, cutting tool material, cutting tool geometry, cutting tool coating, and machine rigidity
Why is cutting speed important in CNC machining?
Cutting speed has no impact on CNC machining
Cutting speed only affects the color of the material
Cutting speed is important for the operator's comfort
Cutting speed affects tool life, surface finish, and material removal rate.
What is feed rate in CNC machining?
The speed at which the cutting tool moves through the material being machined per revolution
The amount of electricity used during the machining process
The number of tools used in the CNC machine
The temperature at which the material is being machined
How is feed rate calculated in CNC machining?
By dividing the RPM by the chip load
By adding the number of cutting edges (flutes) on the tool to the RPM
By multiplying the number of cutting edges (flutes) on the tool by the RPM and the chip load.
By subtracting the chip load from the RPM
4 flute bit characteristics are (select all that apply)
Longer tool life
Harder Materials
Clogs easily in deep cuts
short life
2 flute bit characteristics are (select all that apply)
More room for chip evacuation
Used for light metals
Weak, short tool life
Longer tool life
Which bit is a non center cut bit. (NO plunge cuts)
Calculate the feed rate when milling aluminum (CS of 250 fpm) with a ¼-inch end mill providing that the feed per tooth is 0.002 in. (4 flutes)
3822 in/min
30.6 in/min
3822 rpm
30.6 rpm
