Lathe Components and Accessories, Lathe Operations, Milling and Drilling Flashcards
The four main parts of the carriage are?
- apron
- cross-slide
- saddle
- compound rest
The main parts on an engine lathe
- the bed
- headstock
- the quick change gearbox
- the carriage
- the tailstock
- the ways
- back gears
The weight of the machine refers to the rigidity of the bed it refers to?
the machine’s ability to resist a deflection on the heavy load, rather than the actual weight in pounds or kilograms
The quick change gearbox on the engine lathe is used to?
feed and speeds
What type of taper is used in the tail stock?
a morse taper (self holding)
The compound rest can swivel up to?
360°C
The tail stock has two piece adjustable casting to permit?
taper turning
How are metric taper design?
as a ratio
A centre installed in the headstock is a?
live centre
When grinding HSS, you must remember to?
Quench
The manual oil pump on the carriage pumps oil to?
the ways
What is the amount of taper on a taper pin?
1/4
What is affected when drill bit tapers get damage?
the alignment and locking capabilities
Cutting a taper with the compound rest has what major disadvantage?
there is no power feed
The headstock of a lathe is located on the?
left and contains spindle
The tailstock is locked in position on the ways of the lathe with the?
tailstock clamp
The chuck best suited for holding odd shape pieces is the?
four jaw chuck
Taper mandrels or arbors range from?
.006 to .008 taper per foot
The jacob taper per foot ranges from what sizes?
.591 to .979 inch taper per foot
What type of grinding wheel is best suited for grinding cemented carbide?
Silicon carbide
An O-ring grove would be cut with?
A form tool
A lathe dog is used to?
transmit drive power to a mandrel or work piece held between centres
A followers rest has how many jaws?
2 adjustable jaws
A revolving centre is installed in the?
tailstock
The thread chasing dial is used to?
time engagement of the split nut when cutting a thread
Before changing the back gear on a lathe you must?
lockout the power supply and disconnect the machine
When filing a work piece in a lathe
hold the file in your left hand
Most lapping is now done on?
flat surfaces
The apron hand wheel moves the carriage by means of?
rack and pinion
Lathe are considered to be more dangerous than other machine because?
they have not evolved with safety features like most machines
The size of the lathe is determine by the?
maximum distance between centres and the amount of swing
The thread-chasing dial?
tells you when to engage the split nut
Once you have set a taper attachment to the desired angle, what important step must you follow?
take a trial cut and measure the taper
When finishing a work piece using an emery cloth, how should you hold it in position?
the end held in your left hand passes under the work piece and the end coming over the top is held in your right hand
The finish on a thread can be enhanced by using?
cutting oil
The pitched of a thread cut on a lathe is controlled by the?
lead screw
How does the feed in speed of a reamer is compare to a drill?
RPM is lower and feed is faster
A reamer is used to?
Produce a smooth accurate hole
The boring operation on a lathe is?
increasing the diameter of a hole in a work piece
An infeed of .050 on a direct reading cross-slide results in a diameter reduction of?
.050 (same)
What are the main categories of cutting fluids?
- cutting oils
- emulsifiable oils
- chemical cutting fluids
To cut an angle of 60° on a work piece using a lathe you must set the tool post at what degree?
30° angles - because cuts are made at included angles
Turning is usually done with a
right hand tool
A centre installed in the tailstock is a?
dead centre
Cutting speed refers to?
how fast the work piece travels passed the tool
Cutting fluids on a lathe are used mainly for?
decreasing heat and friction
When grinding on a lathe you should?
cover the ways with ply-wood
The most common lathe operations is?
turning