Floor And Power Equipment ( 110101h ) Flashcards
What should you never do with an extension cord?
Never use it as a replacement for a rope
What size chucks are equipped on common drills?
1/4” and 3/8”
What are the two different type’s of chucks?
Keyless jacobs chuck and keyed jacobs chuck these have three points to tighten
What size chucks do heavy duty drills have ?
They have 1/2” ones
What is the difference between angle drill and standard power drill?
The chuck is 90 or 45 degrees to the body’s of the dills
What are standard drill bits called?
Twist drill bit
How can drill bits be categorized?
Number
Letter
Fraction
Metric size
What are common bits made from?
Tool steel
High speed steel
Cobalt
Titanium coated
What types of shanks do drill bits have?
Taper shanks
Straight shanks
What parts do drill bits have?
Tip
Cutting edge
Body (flutes cut into it )
Shank
What is a drill bit sharped to?
118 degrees
Sharper for soft materials
Duller for harden materials
What makes a masonry bit different?
They have carbide tips to take the stress of hammering and drilling.
What should you not do with an angle grinder?
Never use the disk for anything but what it is specifically met to do
What is a Unishears?
They are like powered snips
What are nibblers how do they cut?
They are a tool that can chew through metal with a punching motion that produces a clean fast cut
What are double cut shears?
They are a power too that cuts two sides and produces a waste strip of metal
What are hand brake capacity’s dependent on ?
The use of the insert bar and the angle bar
What does not having an insert bar do to a hand brake?
Reduces the capacity by 7 gauges
What hand brakes can have adjustable nose bars?
Box and pan
Electromagnetic brake
What should be watched for when using a box and pan?
Make sure that the fingers are seated properly all the way up
What are box and pan fingers size like?
They are commonly made in 2” to 6” sections but depending on manufacturer they can change
What should never be bent in a hand brake?
Angle iron
Rod
Wire
Two metal thickness
What is the main advantage of a magnabend?
They have to highly limit and they are portable
What is a squaring shear?
They are floor machines that cut metal square and clean
What gauges do squaring shears and power shears have ?
Back gauge
Side gauge
Front gauge
Bevel guage
What do the rolls for a notes grooved come in size?
3/16”
5/16”
7/16”
9/16”
What is the max capacity of a di acro hand manual bender?
Bending pipe and tubing and soils round bar up to 1”
what is a ballpark formula for cutting the speed of a drill bit?
speed= 400 / diameter of bit
how are bandsaw cutting speeds measured?
Surface feet per minute (SFPM) or Surface meters per minute (SMPM)
what are the main sections of a contour band saw?
The base
column or frame
the head
what speed do pedestal grinders run at?
1600 —> 1750 rpm
what is an acceptable tool rest placement?
no more that 3mm or 1/8” from the grinding stone
must be a 1/4” —-> 1/2” from the center of the wheel
what is the heavy piece of paper on a grinding stone called?
Blotters
they act like a bushing of sorts and have essential information on them
what must be done when dressing a grindstone?
were PPE and move the resurfacing tool carefully from side to side evenly
what are the operating precautions of a press brake?
Never leave the machine running when changing the dies
always do a dry run to ensure that you will not fracture the dies
keep the channels clean
when spot welding do settings mater from galvanized to mild steel?
yes galvanized requires more heat input and longer timing than mild steel
( test piece)
what should spot welder tips be tapered at?
1/8” plus two metal thicknesses
what can a plasma cutter cut?
anything that is electrically conductive
what product does a plasma edge leave?
when plasma cuts it heats up so much that it work hardens the metal and makes the material harder to cut through so much so that it can damage shears.
