TPC 324 Flashcards
When checking the lathe bed it must be perfectly ______ at all times?
Level
When a project requires both a roughing cut and finishing cut select workpiece raw stock that has enough material to?
Perform both operations
You should mount pieces that are moderate to long in length between?
Centers
When installing a face plate?
Slowly thread the faceplate onto the spindle, never turn the power “on” to install a faceplate on the lathe spindle
Do not select a lathe dog that is?
Larger than necessary to accept the workpiece diameter
When you take a cut, either rough or finishing, you are reducing the diameter of the work by how much?
Twice the depth of the cut
Which way do you cut when using a right-hand turning setup?
You go from right to left when the cutter is setup this way
When installing a cutter and holder into a lathe you want the tip of the tool to be set at what degree?
4 or 5 degrees toward the tailstock when cutting right to left and 4 or 5 degrees toward the headstock when cutting left to right
To rough turn the workpiece, you will want the tool to cut at an angle of?
5 degrees above the workpiece centerline
With a constant depth of cut…
Any increase in cutting speed will decrease feed
When a shoulder must be turned close to one of the ends what should you use?
A hermaphrodite caliper and a scale to mark the shoulders location
Place the bent leg of the caliper against?
The faced end of the workpiece
If you’re required to make several duplicates of a shouldered part, you might use what kind of tool?
A parting tool to lay out the shoulders on the workpieces.
What tool is normally used for turning filleted shoulders?
The round nose cutting tool
Fillets of different sizes are made by changing?
The nose radius of the cutters
When is the split-nut assembly used?
Only when cutting threads
Never engage the split-nut when?
Any other automatic feed mechanism is in operation
The distance between the point of one thread to the same point on the next thread is called?
Pitch
The distance which a point on one thread travels during one revolution of the screw is called?
Lead
If the workpiece you were machining was long and slender, you would need to use a?
Steady rest or follower rest for support during the threading process
What taper is approximately 5/8 in./ft. And is used on the shanks of twist drills, reamers, end mills, large centers, and other machine tool parts and cutters?
Morse taper
What taper uses constant denominators of 2, 8, and 10
Jarno taper
What is the basic taper formula?
T= D-d
———
L
What method requires the work piece to be removed from the lathe for setup?
The tailstock set over method
