in straight level flight, the angle of attack depends:
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test
a lathe has the following axes:
on a two axis turning center the diameter controlling axis is:
the letter addresses used to identify axes of rotation are:
in nc (tape) controlled machines, the m02 command rewinds the tape to its start. how is a cnc machine command to return the program to its start?
the default (at machine start-up) feed rate on lathes is typically measured in
what other program word is necessary when programming g01 linear interpolation?
programming is a method of defining tool movements through the application of numbers and corresponding coded letter symbols.
a program block is a single line of code followed by an end-of-block character.
each block contains one or more program words.
the letter address, o is used to identify the program number and has no other use in programming.
in programming,tool function is commanded by the four digits that follow the letter address t. (example t0404). what do these two sets of numbers refer to?
what two letters identify the incremental distance from the starting point to the center in g02/g03 programming?
which of the following are modal commands?
when programming an arc an additional method exists that does not use i j and k. which program word is used?
what character is used in the program at the end of a block?
when the machine is turned on for the first time,it must be sent to its home position.
the term"modal commands” means that once the command is initiated it stays in effect until cancelled or replaced by another command from the same group.
fixed cutting cycle g90 is limited to orthogonal tool movements(no contouring or chamfers are allowed)
when programming arcs with modern cnc controllers i, j and k can be omitted and replaced by r. if the arc is greater than 1800, what must be added to the r command?
which button is used to activate automatic operation of a cnc program?
which mode switch/button enables the operator to make changes to the program?
during setup, the mode switch used to allow for manual movement of the machine axes is:
the counterclockwise direction of rotation is always a negative axis movement referring to the handle (pulse generator)
which display includes the programmed distance-to-go readouts?
when the machine is on and the program check screen is displayed,there is a group of g-codes displayed. what does this indicate?
what does the acronym mdi stand for?
which display screen is used to enter tool information?
program coordinates that are based on a fixed origin are called:
which operation selection button allows for the execution of a single cnc command?
what m-code is listed in the last line of a subprogram?
if the reset button is pressed during automatic operation, spindle rotations, feed and coolant will stop.