Machine Guard Exam Solution Manual Already Passed
All machines consist of three fundamental areas which are? - Answers 1. The point of operation
2. The power transmission device
3. The operating controls.
Operating Controls - Answers The operating controls are the mechanical or electric power controls used
by the worker to operate the machine.
Power Transmission - Answers The power transmission apparatus is all components of the mechanical
system which transmit energy to the part of the machine performing the work. These components
include flywheels, pulleys, belts, connecting rods, couplings, cams, spindles, chains, cranks, and gears.
Point of Operation - Answers The point of operation is where work is performed on materials. Examples
include cutting, shaping. boring, and, forming of stock.
Motions - Answers Motions which are how the machine part moves. Examples include rotating, in-
running nip points, reciprocating, and transversing.
Actions - Answers Actions which are operations that the machine part performs.
Examples include cutting, punching, shearing, and bending.
Cutting action may involve what? - Answers Rotating, reciprocating, or transverse motion.
The danger of cutting action exists at the point of operation where finger, arm and body injuries can
occur. What things can be hazards? - Answers Flying chips or scrap material can strike the head,
particularly in the area of the eyes or face.
Such hazards are present at the point of operation in cutting wood, metal, and other materials.
Examples of mechanisms involving cutting hazards include what? - Answers Bandsaws, circular saws,
boring and drilling machines, turning machines (lathes), or milling machines.
Punching action results when what happens? - Answers Power is applied to a slide (ram) for the purpose
of blanking, drawing, or stamping metal or other materials.
Typical machines used for punching operations are what? - Answers Power presses and iron workers.
Shearing action involves applying power to what? - Answers Slide or knife in order to trim or shear metal
or other materials.
A hazard occurs at the point of operation where stock is what? - Answers Inserted, held, and withdrawn.
Examples of machines used for shearing operations are what? - Answers Mechanically, hydraulically, or
pneumatically powered shears.
, Bending action results when what happens? - Answers Power is applied to a slide in order to draw or
stamp metal or other materials.
Equipment that uses bending action includes what? - Answers Power presses, press brakes, and tubing
benders.
What are the most common ways workers get hurt around machines? - Answers 1. Reaching in to clean
equipment
2. Not using lockout tagout
3. Missing guards
4. Unqualified operators
____________ are how the machine part moves, for example rotating, in-running nip points,
reciprocating, and transversing. ________________ are operations the machine performs, such as
cutting, punching, shearing, and bending. - Answers Motions are how the machine moves and actions
are operations it performs.
The point of operation is the area on a machine where? - Answers Work is actually performed upon the
material being processed.
If you are working with any of these machines listed, the point of operation MUST be guarded. -
Answers 1. Guillotine cutters
2. Shears
3. Alligator shears
4. Power presses
5. Milling machines
6. Power saws
7. Jointers
8. Portable power tools
9. Forming rolls and calendars
Fan Blades - Answers When the periphery of the blades of a fan is less than seven (7) feet above the
floor or working level, the blades must be guarded. The guard must not have openings larger than one-
half (½) inch.
