Mechanical Division

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Mechanical Division
Gears, Springs, Screws, and other miscellaneous
whatnot
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Topics
Springs
Screws
MVRT115
Gears
Other
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Springs
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Basic Types
MACHINE SCREWS

• ALSO KNOWN AS MACHINE BOLTS
• YOUR TYPICAL BOLT/SCREW
• COMES IN ALMOST EVERY HEAD TYPE

MVRT115
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Basic Types
SELF DRILLING SCREWS

• DRILLS A HOLE, TAPS THREADS, AND FASTENS
  MATERIALS
• GENERALLY NOT VERY USEFUL FOR US

MVRT115
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Basic Types
SHOULDER SCREWS

• ALSO KNOWN AS SHOULDER BOLTS
• HAS AN UNTHREADED SECTION UNDER THE HEAD
• UNTHREADED SECTION SERVES AS A BUMPER/SPACER
• SOMETIMES USED AS PSEUDO-AXLES FOR DRIVETRAIN
  WHEELS

MVRT115
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Basic Types
THREADED ROD

• ESSENTIALLY JUST A LONG THREADED ROD. AMAZING.
• USEFUL FOR A VARIETY OF PURPOSES

MVRT115
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SPRINGS
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Basic Types
COMPRESSION SPRINGS

• GENERALLY ROUND AND CYLINDRICAL IN SHAPE
• RESISTS COMPRESSION
• CAN BE WOUND IN CLOCKWISE AND COUNTERCLOCKWISE
  DIRECTIONS

MVRT115
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Basic Types
EXTENSION SPRINGS

• GENERALLY ROUND AND CYLINDRICAL IN SHAPE WITH
  HOOKS OR LOOPS AT THE ENDS
• RESISTS STRETCHING
• CAN BE WOUND IN CLOCKWISE AND COUNTERCLOCKWISE
  DIRECTIONS

MVRT115
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Basic Types
DISC SPRINGS

• ALSO KNOWN AS WASHER SPRINGS
• GENERALLY ROUND AND FLAT IN SHAPE, RESEMBLING A
  DEMENTED THIN WASHER
• USEFUL FOR PREVENTING VIBRATION AND
  SELF-LOOSENING OF BOLTS
• CAN BE STACKED TO INCREASE LOAD OR RESISTANCE

MVRT115
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Basic Types
TORSION SPRINGS

• GENERALLY RESEMBLE AN l SHAPE WITH A LOOP IN
  THE MIDDLE
• RESISTS ROTATION OF THE TWO ENDS IN OPPOSITE
  DIRECTION
• CAN BE WOUND CLOCKWISE OR COUNTERCLOCKWISE TO
  RESIST COMPRESSION OR EXTENSION (ROTATIONAL)

MVRT115
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GEARS
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Basic Types
BEVEL GEARS

• GEAR WITH TEETH ON A 45 DEGREE SLANTED ANGLE
• ENABLES MESHING OF TEETH AT A 90 DEGREE
  INTERSECTION

MVRT115
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Basic Types
MITER GEARS

• GEAR WITH TEETH ON A 45 DEGREE SLANTED ANGLE
• ENABLES MESHING OF TEETH AT A 90 DEGREE
  INTERSECTION
• GEARS MUST BE EXACTLY THE SAME

MVRT115
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Basic Types
SPUR GEARS

• WORK WITH RACK TO PROVIDE HORIZONTAL MOTION

MVRT115
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Basic Types
WORM GEAR

• RESEMBLES A CYLINDER ITH THREADS RUNNING
  LENGTH-WISE VS. DIAMETER-WISE
• CANNOT BE TURNED BY OTHER NORMAL GEARS (PREVENTS
  BACKDRIVE)
• GENERALLY DOES NOT CHANGE GEAR RATIO VERY MUCH IF
  AT ALL

MVRT115