Lathe Components & Accessories Flashcards
Name this part:
Bed of a lathe
Name this part:
Head Stock
Name this part:
Back Gears
Name this part:
Quick-Change Gearbox
Name this part:
Carriage
Name this part:
Compound Rest
Name this part:
Mandrel.
Name this part:
Thread Chasing Dial
The basic function of a lathe is to:
Machine round work.
The size of a lathe is determined by the:
Maximum distance between centres and the amount of swing.
The compound rest may be rotated:
360 degrees
The apron handwheel moves the carriage by means of:
Rack and pinion.
The feed reverse lever reverses the movement of the:
Carriage and cross-slide.
The carriage is moved under power for turning operations by the:
Feed rod.
The feed change lever:
Changes the direction of carriage feed from forward to reverse.
A revolving centre is installed in the:
Tailstock.
The thread chasing dial is used to:
Time when to engage the split nut when cutting a thread.
The tailstock is locked in position on the ways of the lathe with the:
Tailstock clamp.
The chuck best suited to holding odd-shaped pieces is the:
Four-jaw chuck.
A lathe dog is used to:
Transmit drive power to a mandrel or workpiece held between centres.
A follower rest has:
Two adjustable jaws.
The weight of the machine refers to the __________ of the bed.
Rigidity.
Name the 8 parts of a lathe:
- The bed
- The ways
- The headstock
- The back gears
- The Quick-change Gearbox
- The lead screw, feed rod, & rack
- The Carriage
- The Tailstock
The four common types of lathe centres are:
- Live Centres
- Solid Dead Centres
- Half Centres
- Revolving Dead Centres
Where is the “live” centre found and where is the “dead” centre found on a lathe?
- Live Centre is used in the Headstock
- Dead Centre is used in the Tailstock
Purpose of a steady rest:
Supports long or thin workpieces either at the end or in the middle.
Purpose of a Follower rest:
A follower rest keeps the workpiece from deflecting away from the cutting tool by supporting the immediate area of the cut.
Threads per Inch:
- Even number of threads per inch
- Odd number of threads per inch
- 1/2 threads (1 1/2 threads per inch)
- Fractional numbers of thread per inch, other than 1/2
- Threads that are a multiple of the number of threads per inch in the lead screw.
- Metric pitches
When to Engage the Spilt Nut.
- Any Graduation
- Any Main Graduation
- Graduations 1 & 3 or 2 & 4 (180 degrees)
- Same Graduation every time
- Engage whenever the split nut meshes. The dial is not necessary
- Do not disengage the split nut.
Forming tools are produced for special shapes such as:
- Threading
- Radii
- Chamfering
- Grooving
Taper pins are made of hardened steel and have a _____ taper per foot.
1/4
When changing the back-gears on a lathe, you must:
Lock out the power supply.
When filing a workpiece in a lathe, hold the file handle:
In your left hand
Lathes are condidered to be more dangerous than other machines becuase:
They have not evolved with safety features like most machines.
The headstock of a lathe is located:
On the left side and cotains the spindle
A follower rest has _____ adjustable jaws.
Two
What type of taper is used in the tailstock?
Morse
