AND SOLUTIONS GUARANTEE A+
✔✔If the flutes spiral around the tap, much like a twist drill, the chips cut by the tap will
come out the top of the hole. These taps are primarily designed for: - ✔✔Holes that do
not go all the way through the material
✔✔Taps with straight flutes push the cut material or chips down through the hole. These
straight fluted taps are best for: - ✔✔Holes that go through the material
✔✔Typically, thread mill cutters are designed to cut threads on the outside diameter of
your workpiece, or internal threads on large-diameter holes. True or False - ✔✔True
✔✔Specific endmills are designed to cut specific materials. Endmills with 2 or 3 flutes
are primarily designed to cut _____ - ✔✔Aluminum
✔✔Endmills with 4 or more flutes are excellent for cutting aluminum. True or False -
✔✔False
✔✔The most common materials you will encounter when first starting out in a job shop
are: mild steel, aluminum, stainless steel and alloy steel. True or False - ✔✔True
✔✔One of the most common material types in a machine shop is aluminum. Two
characteristics of aluminum are: - ✔✔Very light weight and not prone to rusting
✔✔When it comes to sheet and plate stock made from mild steels, you will hear the
terms hot-rolled and cold-rolled used often. You can tell hot-rolled steel sheet or plate
by its surface finish. The surface finish on hot-rolled steel is: - ✔✔Crusty and scaled
✔✔Cold-rolled steel is the same as hot-rolled steel, but put through additional
processing. True or False - ✔✔True
✔✔It is not important to match the raw material you choose to machine the part from
with the raw material call-out on the drawing. True or False - ✔✔False
✔✔Mild steel is the most common material that machine shops use in machining. Mild
steels are: - ✔✔Typically on the hard side of the hardness spectrum
✔✔Aluminum comes in a variety of alloys: 2000, 6000, and 7000 series.The most
common aluminum alloy you will see in machine shops is 6061. True or False - ✔✔True
, ✔✔When cutting aluminum, the Operator does not need to run the coolant system,
based on the soft and gummy nature of the aluminum alloy. True or False - ✔✔False
✔✔Alloy steels are stronger, tougher, and harder than mild steels. True or False -
✔✔True
✔✔Stainless steel is known for its toughness and non-rusting characteristics. True or
False - ✔✔True
✔✔Stainless steel is also known for its ease of machining. True or False - ✔✔False
✔✔It is recommended to run the Spindle Warm-Up Cycle. What is the correct interval to
run the Spindle Warm-Up Cycle: - ✔✔Daily
✔✔It is important to check the spindle taper to make sure it is free of: - ✔✔Chips, dings,
and fretting marks
✔✔It is recommended that the spindle taper, the toolholders, and the pull studs be
checked regularly. What is the correct interval to check these 3 items: - ✔✔Daily
✔✔If any chips are found in the spindle taper, you should: - ✔✔Wipe them out with a
clean rag
✔✔Only use clean, precision-ground toolholders in the spindle. True or False - ✔✔True
✔✔The pull studs that are on the end of the toolholder can show signs of wear. If the
pull studs are dinged or worn, it is probably time to replace them. If you find this
condition, you should: - ✔✔Tell your Supervisor
✔✔Chips will build up inside the machine enclosure throughout the day. Clearing chips
frequently will reduce the wear and tear on the waycovers and wipers. True or False -
✔✔True
✔✔Removing the chips from the machine enclosure allows the coolant to run freely
back to the coolant tank for use. This is very important. True or False - ✔✔True
✔✔Coolant level and coolant concentration ratio should be checked regularly. What is
the correct interval for checking the coolant? - ✔✔Daily
✔✔If the coolant concentration is not correct, you should: - ✔✔Contact your Supervisor